Circulating leptin levels in the assessment of Crohn’s disease activity and its relation to nutritional status / Los niveles circulantes de leptina en la evaluación de la actividad de la enfermedad de Crohn y su relación con el estado nutricional

Objective: to evaluate leptin levels and its relation to nutritional status in Crohn’s disease (CD).Methods: the study included 154 CD patients and healthy controls. Leptin level was determined before treatment. Nutrition levels were assessedusing the Nutrition Risk Screening 2002 (NRS-2002) and Patient-Generated Subjective Global Assessment (PG-SGA). Indicators included bodymass index (BMI), mid-arm circumference, the circumference of the upper-arm muscle, triceps skinfold thickness, and circumference of legs.Results: leptin levels differed between CD patients (1,025 ± 874 ng/ml) and controls (18,48 ± 1,222 ng/ml). Significant differences were seenin NRS-2002, PG-SGA scores, BMI and other nutritional indicators. Negative correlations were observed between leptin and NRS-2002, PG-SGAscores, while positive correlations were observed with other nutritional indicators. The receiver operating characteristic (ROC) curve showedassociation between leptin and the diagnosis of CD, suggesting leptin concentration below 803.02 ng/ml as a threshold for CD.Conclusion: dysfunctional leptin regulation may relate to poor nutritional status associated with CD. The leptin level is thus an additional toolfor evaluating CD patients, predicting disease activity and clinical response. Leptin may be a potential target for intervention in CD to improvenutritional status.(AU)

Objetivo: evaluar los niveles de leptina y su relación con el estado nutricional en la enfermedad de Crohn (EC).Métodos: se incluyeron 154 pacientes con EC y controles sanos. El nivel de leptina se determinó antes del tratamiento. La situación nutricionalse evaluó mediante el examen de riesgo nutricional 2002 (NRS-2002) y la Valoración Global Subjetiva Generada por el Paciente (VGS-GP). Losindicadores incluyen el índice de masa corporal (IMC), la circunferencia media del brazo, la circunferencia del músculo superior del brazo, elgrosor del pliegue cutáneo del tríceps y la circunferencia de las piernas.Resultados: los niveles de leptina difirieron entre los pacientes con EC (1.025 ± 874 ng/ml) y los controles (18.48 ± 1.222 ng/ml). Se obser-varon diferencias significativas en NRS-2002, puntajes de VGS-GP, IMC y otros indicadores nutricionales. Se observaron correlaciones negativasentre leptina y NRS-2002, puntuaciones de VGS-GP, mientras que se observaron correlaciones positivas con otros indicadores nutricionales.La curva ROC mostró asociación entre leptina y el diagnóstico de EC, sugiriendo concentraciones de leptina por debajo de 803,02 ng/ml comoumbral para EC.Conclusión: puede relacionarse la alteración en la regulación de la leptina con la peor situación nutricional en enfermos con EC. La leptinapuede ser un objetivo potencial para la intervención en EC a fin de mejorar el estado nutricional.(AU)

Circulating leptin levels in the assessment of Crohn's disease activity and its relation to nutritional status.

Introduction: Objective: to evaluate leptin levels and its relation to nutritional status in Crohn's disease (CD). Methods: the study included 154 CD patients and healthy controls. Leptin level was determined before treatment. Nutrition levels were assessed using the Nutrition Risk Screening 2002 (NRS-2002) and Patient-Generated Subjective Global Assessment (PG-SGA). Indicators included body mass index (BMI), mid-arm circumference, the circumference of the upper-arm muscle, triceps skinfold thickness, and circumference of legs. Results: leptin levels differed between CD patients (1,025 ± 874 ng/ml) and controls (18,481,222 ng/ml). Significant differences were seen in NRS-2002, PG-SGA scores, BMI and other nutritional indicators. Negative correlations were observed between leptin and NRS-2002, PG-SGA scores, while positive correlations were observed with other nutritional indicators. The receiver operating characteristic (ROC) curve showed association between leptin and the diagnosis of CD, suggesting leptin concentration below 803.02 ng/ml as a threshold for CD. Conclusion: dysfunctional leptin regulation may relate to poor nutritional status associated with CD. The leptin level is thus an additional tool for evaluating CD patients, predicting disease activity and clinical response. Leptin may be a potential target for intervention in CD to improve nutritional status.

Introducción: Objetivo: evaluar los niveles de leptina y su relación con el estado nutricional en la enfermedad de Crohn (EC). Métodos: se incluyeron 154 pacientes con EC y controles sanos. El nivel de leptina se determinó antes del tratamiento. La situación nutricional se evaluó mediante el examen de riesgo nutricional 2002 (NRS-2002) y la Valoración Global Subjetiva Generada por el Paciente (VGS-GP). Los indicadores incluyen el índice de masa corporal (IMC), la circunferencia media del brazo, la circunferencia del músculo superior del brazo, el grosor del pliegue cutáneo del tríceps y la circunferencia de las piernas. Resultados: los niveles de leptina difirieron entre los pacientes con EC (1.025 ± 874 ng/ml) y los controles (18.481.222 ng/ml). Se observaron diferencias significativas en NRS-2002, puntajes de VGS-GP, IMC y otros indicadores nutricionales. Se observaron correlaciones negativas entre leptina y NRS-2002, puntuaciones de VGS-GP, mientras que se observaron correlaciones positivas con otros indicadores nutricionales. La curva ROC mostró asociación entre leptina y el diagnóstico de EC, sugiriendo concentraciones de leptina por debajo de 803,02 ng/ml como umbral para EC. Conclusión: puede relacionarse la alteración en la regulación de la leptina con la peor situación nutricional en enfermos con EC.La leptina puede ser un objetivo potencial para la intervención en EC a fin de mejorar el estado nutricional.

Composición corporal y evolución nutricional en adolescentes con anorexia nerviosa / Body composition and nutritional status changes in adolescents with anorexia nervosa

Introducción: La valoración nutricional en anorexia nerviosa (AN) incluye determinar la composición corporal y monitorizar su evolución a lo largo del periodo de tratamiento. La prueba gold standard para el estudio de la composición corporal es la absorciometría de rayos X de energía dual (DEXA), si bien la bioimpedancia eléctrica (BIA) se postula como una alternativa más accesible, barata, rápida y que no irradia. Material y métodos: Se reclutaron secuencialmente a 33 mujeres adolescentes (11,7-16,3 años) diagnosticadas de AN. Se recogieron parámetros clínicos, antropométricos y analíticos, y se realizó BIA y DEXA a la inclusión en el estudio y a la finalización del mismo con separación media de un año, durante la fase de rehabilitación nutricional. Resultados: Se objetivó mejoría significativa a nivel nutricional, reflejada en la composición corporal obtenida mediante antropometría y BIA. El ángulo de fase aumentó significativamente durante el periodo de seguimiento. Una mayor pérdida ponderal se correlacionó con la presencia de amenorrea secundaria y con una menor densidad mineral ósea en columna. Conclusiones: La BIA es una herramienta útil para la valoración y el seguimiento del estado nutricional en pacientes con AN en edad pediátrica. La DEXA sigue siendo imprescindible para conocer la afectación de la densidad mineral ósea. El papel de hormonas como la leptina está aún por determinar. (AU)

Introduction: Nutritional status assessment in anorexia nervosa (AN) includes the evaluation and monitoring of body composition throughout the treatment period. The gold standard for the study of body composition is dual-energy X-ray absorptiometry (DEXA), although electrical bioimpedance (BIA) is a more accessible, cheaper and faster method that does not involve exposure to radiation. Material and methods: We recruited 33 female adolescents with AN (age, 11.7-16.3 years) by consecutive sampling. We collected data on clinical, anthropometric and laboratory variables. Patients were assessed with BIA and DEXA at inclusion in the study and at the end of the study, with a mean duration of followup of 1 year, during the nutritional rehabilitation phase. Results: There was significant improvement in nutritional status, reflected by the body composition obtained by anthropometric measurements and BIA. The phase angle increased significantly during the followup. Greater weight loss was associated with the presence of secondary amenorrhoea and decreased bone mineral density in the spine. Conclusions: Electrical BIA is a useful tool for assessment and monitoring of nutritional status in paediatric patients with AN. Dual-energy X-ray absorptiometry continues to be essential to assess bone mineral density. The role of hormones such as leptin remains to be elucidated. (AU)

Body composition and nutritional status changes in adolescents with anorexia nervosa.

INTRODUCTION: Nutritional status assessment in anorexia nervosa (AN) includes the evaluation and monitoring of body composition throughout the treatment period. The gold standard for the study of body composition is dual-energy X-ray absorptiometry (DEXA), although electrical bioimpedance (BIA) is a more accessible, cheaper and faster method that does not involve exposure to radiation. MATERIAL AND METHODS: We recruited 33 female adolescents with AN (age, 11.7-16.3 years) by consecutive sampling. We collected data on clinical, anthropometric and laboratory variables. Patients were assessed with BIA and DEXA at inclusion in the study and at the end of the study, with a mean duration of follow-up of 1 year, during the nutritional rehabilitation phase. RESULTS: There was significant improvement in nutritional status, reflected by the body composition obtained by anthropometric measurements and BIA. The phase angle increased significantly during the follow-up. Greater weight loss was associated with the presence of secondary amenorrhoea and decreased bone mineral density in the spine. CONCLUSIONS: Electrical BIA is a useful tool for assessment and monitoring of nutritional status in paediatric patients with AN. Dual-energy X-ray absorptiometry continues to be essential to assess bone mineral density. The role of hormones such as leptin remains to be elucidated.

Dietary inflammatory index and its association with leptin and adiponectin in uygur overweight/obese adults / Índice de inflamación de la dieta y su relación con la leptina y la adiponectina en adultos de Uygur con sobrepeso/obesidad

Introduction: chronic inflammation contributes to a wide range of metabolic disorders through the influence of diet. The dietary inflammatory index (DII) was developed to measure the inflammation potential of diet. Objectives: Uygur adults have a high prevalence of obesity, but the causes of this condition remain unclear. In this study we investigated the association between DII and adipocytokines among overweight and obese Uygur adults. Methods: a total of 283 obese and overweight Uygur adults were included. Sociodemographic characteristics, anthropometric measurements, dietary surveys and biochemical indicators were collected by standardized protocols. The DII score was calculated using a valid and reliable 93-item food frequency questionnaire (FFQ). Linear regression was used to estimate the relationship between DII and adipocytokines. Results: the DII score was 1.35 ± 1.08, ranging from -2.14 to +3.11. There was a significant inverse correlation between DII and high-density lipoprotein cholesterol (HDL-C) in the unadjusted model (β = -0.12, SE = 0.05, p = 0.02), and this remained after adjustment for age, gender, body mass index (BMI). DII was negatively associated with adiponectin (ADPN) ( = -203.15, p = 0.04) and positively associated with leptin (LEP) concentration ( = 1.64, p = 0.002) after adjustment for age, gender and BMI. Conclusion: a pro-inflammatory diet, as indicated by a higher DII score, is associated with adipose tissue inflammation in Uygur adults and supports the hypothesis that diet may play a role in the development of obesity through inflammatory modulation mechanisms. A healthy anti-inflammatory diet is feasible for obesity intervention in the future.(AU)

Introducción: la inflamación crónica causa múltiples trastornos metabólicos a través de la influencia de la dieta. El índice de inflamación dietética(DII) se estableció para medir el potencial inflamatorio de la dieta.Objetivo: los adultos de Uygur presentan una alta prevalencia de obesidad, pero las causas de esta condición aún no están claras. En el presenteestudio se investigó la relación entre DII y adipocitocinas en adultos uigur con sobrepeso y obesidad.Métodos: se incluyeron 283 adultos de Uygur obesos y con sobrepeso. Las características sociodemográficas, antropométricas, dietéticas ybioquímicas se recogieron mediante un protocolo estandarizado. El índice DII se calculó utilizando un cuestionario de frecuencia alimentaria (FFQ)válido y fiable de 93 elementos. Se realizó una regresión lineal para estimar la relación entre DII y adipocitocinas.Resultados: la puntuación DII fue de 1,35 ± 1,08 y osciló entre -2,14 y +3,11. En el modelo no ajustado hubo una correlación negativa signi-ficativa entre DII y colesterol lipoproteínico de alta densidad (HDL-C) (β = -0,12, p = 0,02) que permaneció después de ajustar la edad, el sexoy el índice de masa corporal (IMC). Después de ajustar la edad, el sexo y el IMC, el DII se correlacionó negativamente con la concentración deadiponectina (β = - 203,15, p = 0,04) y positivamente con la concentración de leptina (β = 1,64, p = 0002).Conclusión: las puntuaciones más altas de DII sugieren que la dieta proinflamatoria está relacionada con la inflamación del tejido adiposo enlos adultos de Uygur, y apoyan la hipótesis de que la dieta puede desempeñar un papel en el desarrollo de la obesidad a través del mecanismode regulación de la inflamación. La dieta antiinflamatoria saludable es factible para futuras intervenciones de obesidad.(AU)

Leptin and prolactin reduce cryodamage in normozoospermic human semen samples during cryopreservation / La leptina y la prolactina reducen el criodaño en muestras de semen humano normozoospérmico durante la criopreservación

Objectives: Cryopreservation has destructive effects on the function and structure of spermatozoa. It is known that leptin and prolactin play an active role in decreasing the rates of reactive oxygen species and DNA fragmentation, as well as enhancing sperm motility. Hence, this experiment aimed to investigate the effects of leptin and prolactin as pro-survival factors on the normozoospermic human semen samples during cryopreservation. Material and methods: Semen samples were collected from 15 healthy, fertile men ranging from 25 to 40 years. Cryopreservation of the samples was performed in liquid nitrogen over a period of two weeks, using five varying concentrations of leptin/prolactin, 0, 10, 100, 500, and 1000ng/ml respectively. Sperm motility, total caspase activity, and mitochondrial and cytosolic ROS were measured by flowcytometry, TUNEL, and other appropriate tests after thawing of the samples. Results: Both hormones were observed to have positive effects on the motility of the samples post-cryopreservation, the highest improvement being in the 100ng/ml concentration leptin and prolactin in comparison to the control group (P=0.01 and P=0.041, respectively). A significant reduction of mitochondrial ROS was also observed in 100 and 1000ng/ml of leptin (P=0.042), and there was a considerable decrease in the cytosolic ROS in the 100ng/ml of prolactin in comparison to the control group (P=0.048). Total caspase activity was also highly reduced in the 100, 500, and 1000ng/ml of leptin compared to the control group (P=0.039). Interestingly, both hormones also significantly decreased DNA fragmentation in 1000ng/ml compared to the control group (P=0.042). (AU)

Objetivos: La criopreservación tiene efectos destructivos sobre la función y estructura de los espermatozoides. Se sabe que la leptina y la prolactina desempeñan un papel activo en la disminución de las tasas de especies reactivas de oxígeno (ROS) y la fragmentación del ADN, así como en la mejora de la motilidad de los espermatozoides. Por lo tanto, este experimento tuvo como objetivo investigar los efectos de la leptina y la prolactina como factores de supervivencia en las muestras de semen humano normozoospérmico durante la criopreservación. Material y métodos: Se recolectaron muestras de semen de 15 hombres sanos y fértiles de entre 25 y 40 años. La crioconservación de las muestras se realizó en nitrógeno líquido durante un período de 2 semanas, utilizando 5 concentraciones variables de leptina/prolactina: 0, 10, 100, 500 y 1000ng/ml respectivamente. La motilidad de los espermatozoides, la actividad de caspasa total y las ROS mitocondriales y citosólicas se midieron mediante citometría de flujo, TUNEL y otras pruebas apropiadas después de descongelar las muestras. Resultados: Se observó que ambas hormonas tienen efectos positivos sobre la motilidad de las muestras después de la crioconservación, la mayor mejora se encuentra en la concentración de leptina y prolactina de 100ng/ml en comparación con el grupo de control (p=0,01 y p=0,041, respectivamente). También se observó una reducción significativa de las ROS mitocondriales en 100 y 1000ng/ml de leptina (p=0,042), y hubo una disminución considerable en las ROS citosólicas en los 100ng/ml de prolactina en comparación con el grupo de control (p=0,048). La actividad de la caspasa total también se redujo considerablemente en los 100, 500 y 1000ng/ml de leptina en comparación con el grupo de control (p=0,039). Curiosamente, ambas hormonas también redujeron significativamente la fragmentación del ADN en 1000ng/ml en comparación con el grupo de control (p=0,042). (AU)

Dietary inflammatory index and its association with leptin and adiponectin in Uygur overweight/obese adults.

Introduction: Introduction: chronic inflammation contributes to a wide range of metabolic disorders through the influence of diet. The dietary inflammatory index (DII) was developed to measure the inflammation potential of diet. Objectives: Uygur adults have a high prevalence of obesity, but the causes of this condition remain unclear. In this study we investigated the association between DII and adipocytokines among overweight and obese Uygur adults. Methods: a total of 283 obese and overweight Uygur adults were included. Sociodemographic characteristics, anthropometric measurements, dietary surveys and biochemical indicators were collected by standardized protocols. The DII score was calculated using a valid and reliable 93-item food frequency questionnaire (FFQ). Linear regression was used to estimate the relationship between DII and adipocytokines. Results: the DII score was 1.35 ± 1.08, ranging from -2.14 to +3.11. There was a significant inverse correlation between DII and high-density lipoprotein cholesterol (HDL-C) in the unadjusted model (ß = -0.12, SE = 0.05, p = 0.02), and this remained after adjustment for age, gender, body mass index (BMI). DII was negatively associated with adiponectin (ADPN) ( = -203.15, p = 0.04) and positively associated with leptin (LEP) concentration ( = 1.64, p = 0.002) after adjustment for age, gender and BMI. Conclusion: a pro-inflammatory diet, as indicated by a higher DII score, is associated with adipose tissue inflammation in Uygur adults and supports the hypothesis that diet may play a role in the development of obesity through inflammatory modulation mechanisms. A healthy anti-inflammatory diet is feasible for obesity intervention in the future.

Introducción: Introducción: la inflamación crónica causa múltiples trastornos metabólicos a través de la influencia de la dieta. El índice de inflamación dietética (DII) se estableció para medir el potencial inflamatorio de la dieta. Objetivo: los adultos uigur presentan una alta prevalencia de obesidad, pero las causas de esta condición aún no están claras. En el presente estudio se investigó la relación entre DII y adipocitocinas en adultos uigur con sobrepeso y obesidad. Métodos: se incluyeron 283 adultos uigur obesos y con sobrepeso. Las características sociodemográficas, antropométricas, dietéticas y bioquímicas se recogieron mediante un protocolo estandarizado. El índice DII se calculó utilizando un cuestionario de frecuencia alimentaria (FFQ) válido y fiable de 93 elementos. Se realizó una regresión lineal para estimar la relación entre DII y adipocitocinas. Resultados: la puntuación DII fue de 1,35 ± 1,08 y osciló entre -2,14 y +3,11. En el modelo no ajustado hubo una correlación negativa significativa entre DII y colesterol lipoproteínico de alta densidad (HDL-C) (ß = -0,12, p = 0,02) que permaneció después de ajustar la edad, el sexo y el índice de masa corporal (IMC). Después de ajustar la edad, el sexo y el IMC, el DII se correlacionó negativamente con la concentración de adiponectina (ß = - 203,15, p = 0,04) y positivamente con la concentración de leptina (ß = 1,64, p = 0002). Conclusión: las puntuaciones más altas de DII sugieren que la dieta proinflamatoria está relacionada con la inflamación del tejido adiposo en los adultos uigur, y apoyan la hipótesis de que la dieta puede desempeñar un papel en el desarrollo de la obesidad a través del mecanismo de regulación de la inflamación. La dieta antiinflamatoria saludable es factible para futuras intervenciones de obesidad.

Leptin and prolactin reduce cryodamage in normozoospermic human semen samples during cryopreservation.

OBJECTIVES: Cryopreservation has destructive effects on the function and structure of spermatozoa. It is known that leptin and prolactin play an active role in decreasing the rates of reactive oxygen species and DNA fragmentation, as well as enhancing sperm motility. Hence, this experiment aimed to investigate the effects of leptin and prolactin as pro-survival factors on the normozoospermic human semen samples during cryopreservation. MATERIAL AND METHODS: Semen samples were collected from 15 healthy, fertile men ranging from 25 to 40 years. Cryopreservation of the samples was performed in liquid nitrogen over a period of two weeks, using five varying concentrations of leptin/prolactin, 0, 10, 100, 500, and 1000ng/ml respectively. Sperm motility, total caspase activity, and mitochondrial and cytosolic ROS were measured by flowcytometry, TUNEL, and other appropriate tests after thawing of the samples. RESULTS: Both hormones were observed to have positive effects on the motility of the samples post-cryopreservation, the highest improvement being in the 100ng/ml concentration leptin and prolactin in comparison to the control group (P=0.01 and P=0.041, respectively). A significant reduction of mitochondrial ROS was also observed in 100 and 1000ng/ml of leptin (P=0.042), and there was a considerable decrease in the cytosolic ROS in the 100ng/ml of prolactin in comparison to the control group (P=0.048). Total caspase activity was also highly reduced in the 100, 500, and 1000ng/ml of leptin compared to the control group (P=0.039). Interestingly, both hormones also significantly decreased DNA fragmentation in 1000ng/ml compared to the control group (P=0.042). CONCLUSION: It can be concluded that leptin and prolactin act as protective agents against cryodamage to spermatozoa during cryopreservation.

Leptina, obesidad y enfermedades cardiovasculares / Leptin, obesity and cardiovascular diseases

Introducción: la obesidad está asociada con el síndrome metabólico, la hipertensión, la aterosclerosis y las enfermedades del corazón. El tejido adiposo funciona como un órgano endocrino al secretar múltiples proteínas inmunomoduladoras conocidas como adipocinas, que pueden actuar en forma directa sobre órganos cercanos o remotos. Objetivos: la búsqueda de las funciones de las diferentes adipocinas ha permitido establecer la relación entre obesidad y enfermedades cardiovasculares. La primera conduce a mayor expresión de algunas adipocinas proinamatorias y disminución de otras antiinamatorias, dando como resultado el desarrollo de un estado inamatorio crónico de bajo grado. Discusión: algunas adipocinas disminuyen su expresión en sujetos obesos. Sin embargo, la leptina la aumenta en obesidad y promueve complicaciones relacionadas con esta. Conclusiones: estudios clínicos y experimentales indican que la leptina contribuye al desarrollo de cardiopatía isquémica y ejerce acciones perniciosas en las enfermedades cardiovasculares relacionadas con la obesidad.

Introduction: obesity is associated with metabolic syndrome, hypertension, atherosclerosis and heart disease. Adipose tissue functions as an endocrine organ by secreting multiple immune-modulatory proteins known as adipokines, that can directly act on nearby or remote organs. Objetive: research on the various functions of adipokines has shed light on the relationship between obesity and cardiovascular diseases. Obesity leads to increased expression of some pro-inammatory adipokines and diminished expression of other anti-inammatory adipokines, resulting in the development of a chronic low-grade inammatory state. Some adipokines decrease their expression in obese individuals. However, obese subjects have elevated leptin levels which promote obesity-related complications. Conclusions: clinical and experimental studies indicate that leptin contributes to the development of ischemic heart disease and exerts pernicious actions on obesity-linked cardiovascular diseases.

Correlación entre Leptina, indicadores antropométricos y parámetros metabólicos en paciente de 5-15 años con sobrepeso-obesidad

Introducción: la obesidad es un estado patológico caracterizado por una acumulación excesiva de tejido adiposo, la misma secreta adipocinas entre las cuales se encuentra la Leptina que está implicada en importantes funciones metabólicas como el control de apetito y peso corporal. Objetivos: se realizo este estudio de la correlación entre la concentración de Leptina sérica con indicadores antropométricos y parámetros bioquímicos en pacientes entre 5 a 15 años de edad, con sobrepeso u obesidad. Métodos: se efectuó e estudio observacional descriptivo de corte transversal, con 148 pacientes entre 5 y 15 años de edad, se realizaron exámenes bioquímicos para evaluar la concentración de Leptina, Glucosa, Insulina, perfil lipídico e indicadores antropométricos. IMC, %GC y RCE. Resultados Se determinó correlaciones positivas entre las concentraciones de Leptina sérica con el IMC (75,4; p< 0,000), el (% GC) Porcentaje de grasa corporal (70,7: p< 0,000) y el (RCE) Razón Cintura estatura (75,4; p< 0,000), encontramos que no existe correlación entre la concentración de Leptina y Colesterol Total, por otra parte encontramos correlación negativa inversa con la concentración de Colesterol HDL en el sexo masculino, mientras que los Triglicéridos presentaron una correlación estadísticamente significativa. Por otra parte, no encontramos correlación significativa entre la determinación de la Leptina y la glicemia, por el contrario, la insulina presento una correlación alta estadísticamente significativa (p<0,000). Conclusiones: este estudio muestra la existencia de correlación estadísticamente significativa entre la Leptina sérica con indicadores antropométricos y parámetros bioquímicos en pacientes entre 5 a 15 años de edad, que tienen sobrepeso u obesidad.

Introduction: Obesity is a pathological state characterized by an excessive accumulation of adipose tissue, which secretes adipokines where there is Leptin, that is involved in important metabolic functions such as appetite control and body weight. Objectives: a study was carried out on the correlation between the serum Leptin concentration with anthropometric indicators and biochemical parameters in patients between 5 and 15 years old, overweight and obesity. Methods: the cross-sectional descriptive observational study was carried out, with 148 patients between 5 and 15 years of age, biochemical tests were performed to evaluate the concentration of Leptin Glucose, insulin, lipid profile and anthropometric indicators BMI, % BF y WHR. Results: positive correlations were found between serum Leptin concentrations with BMI (75.4; p <0.000), the (% BF) Body fat percentage (70.7: p <0.000) and the (WHR) Waist Ratio height (75,4 p <0.000). A low correlation was observed between the Leptin concentration and Total Cholesterol, with the concentration of HDL Cholesterol an inverse correlation was found in male sex, while Triglycerides presented higher levels in the adolescent group, there was no statistically significant. Also, we did not find a significant between the determination of Leptin and glycemia, on the contrary, insulin presented a statistically significant higher correlation (p <0.000). Conclusion: this study shows the existence of a statistically significant correlation between serum Leptin with anthropometric indicators and biochemical parameters in patients between 5 and 15 years of age, who are overweight or obese.

Ácido valproico y ganancia de peso en pacientes con tratamiento antiepiléptico: una revisión sistemática

Introducción: El ácido valproico es un fármaco que se utiliza en el tratamiento de varias enfermedades, entre ellas la epilepsia. Aunque se lo considera un fármaco seguro presenta distintos efectos adversos entre ellos el más común es el aumento considerable de peso corporal. Objetivo: Identificar la relación entre el uso de ácido valproico en pacientes con tratamiento antiepiléptico y la ganancia de peso. Método: Revisión sistemática realizada en la Universidad Abierta Interamericana, en la que se realizó una búsqueda exhaustiva de estudios en la base de datos PubMed con términos MesH sobre Valproic acid AND weight gain. Una vez seleccionados los artículos tras la aplicación de criterios de inclusión y exclusión quedaron 17, los que fueron útiles para llevar a cabo esta investigación. Resultados: La información de los artículos hallados revela que los mecanismos a través del cual el ácido valproico puede generar este incremento de peso corporal aún no están del todo esclarecidos. Se han propuesto varias hipótesis; las más frecuentes en la literatura son: la hiperinsulinemia y resistencia a la insulina, así como también la hiperleptinemia y la resistencia a la leptina, entre otros. Los pacientes que presentan ganancia de peso tienen importantes consecuencias para la salud, en particular, el desarrollo de obesidad y la asociación con dislipidemia, hipertensión arterial, diabetes mellitus tipo 2 y aterosclerosis. Además, al generar cambios en la imagen corporal puede traer aparejada depresión, disminución de la autoestima y confianza en sí mismo, lo que provoca el incumplimiento y abandono del tratamiento. Conclusiones: Se observa la relación de causalidad del ácido valproico sobre la ganancia de peso en pacientes que padecen epilepsia.

Introduction: Valproic acid is a drug used in the treatment of various diseases, including epilepsy. Although it is considered a safe drug, it presents different adverse effects, among them the most common is the considerable increase in body weight. Objective: To identify the relationship between the use of valproic acid in patients with antiepileptic treatment and weight gain. Method: Systematic review carried out at the Universidad Abierta Interamericana, Argentina, in which an exhaustive search of studies was carried out in the PubMed database with MeSH terms on Valproic acid AND weight gain. Once the articles were selected after applying the inclusion and exclusion criteria, 17 remained, which were useful to carry out this research. Results: The information from the articles found reveals that the mechanisms through which valproic acid can generate this increase in body weight are still not fully clarified. Several hypotheses have been proposed; the most frequent in the literature are: hyperinsulinemia and insulin resistance, as well as hyperleptinemia and leptin resistance, among others. Patients who present weight gain have important health consequences, particularly the development of obesity and the association with dyslipidemia, arterial hypertension, type 2 diabetes mellitus, and atherosclerosis. In addition, by generating changes in body image, it can bring depression, decreased self-esteem and self-confidence, which causes non-compliance and abandonment of treatment. Conclusions: The causal relationship of valproic acid on weight gain in patients with epilepsy is observed.

Introdução: O ácido valpróico é um fármaco utilizado no tratamento de diversas doenças, entre elas a epilepsia. Apesar de ser considerado um medicamento seguro, apresenta diversos efeitos adversos, dentre eles o mais comum é o aumento considerável do peso corporal. Objetivo: Identificar a relação entre o uso de ácido valpróico em pacientes em tratamento antiepiléptico e o ganho de peso. Método: Revisão sistemática realizada na Universidad Abierta Interamericana, na qual foi realizada uma busca exaustiva de estudos na base de dados PubMed com termos MeSH sobre ácido valpróico AND ganho de peso. Uma vez selecionados os artigos após a aplicação dos critérios de inclusão e exclusão, restaram 17, que foram úteis para a realização desta pesquisa. Resultados: As informações dos artigos encontrados revelam que os mecanismos pelos quais o ácido valpróico pode gerar esse aumento de peso corporal ainda não estão totalmente esclarecidos. Várias hipóteses foram propostas; os mais frequentes na literatura são: hiperinsulinemia e resistência à insulina, assim como hiperleptinemia e resistência à leptina, entre outros. Pacientes que apresentam ganho de peso trazem importantes consequências para a saúde, principalmente o desenvolvimento de obesidade e associação com dislipidemia, hipertensão arterial, diabetes mellitus tipo 2 e aterosclerose. Além disso, por gerar alterações na imagem corporal, pode trazer depressão, diminuição da autoestima e da autoconfiança, o que ocasiona a não adesão e abandono do tratamento. Conclusões: Observa-se a relação causal do ácido valpróico com o ganho de peso em pacientes com epilepsia.

[Cardiovascular risk and insulin resistance in childhood leukemia survivors]. / Riesgo cardiovascular y resistencia insulínica en supervivientes de leucemia infantil.

Introduction: Material and methods: a retrospective study of childhood acute leukemia survivors. Survivors with a diagnosis of leukemia before 16 years of age in a tertiary hospital, during the period of 1998-2018, were selected, who had completed their treatment at least two years earlier. We examined: blood adipokine levels and carbohydrate metabolism, body composition by bioimpedance, and carotid status by ultrasound. Somatometric measures were also taken. Results: the registry showed 82 children diagnosed with acute leukemia, aged between 6 and 16 years. Only 22 met the criteria to be included in the study. Results reveled that 32 % of the sample met the criteria for overweight-obesity, and 36 % had high insulin resistance indexes (IR). Leptin levels were higher in women (15.45 vs. 3.25; p = 0.044) and in obese and overweight subjects, as was the leptin/adiponectin ratio, which rises in the presence of IR (2.52 vs. 0.45; p = 0.037). We observed an increase in carotid intima-media thickness in relation to BMI (0.008; CI, -0.002 to 0.013; p = 0.007) without any association with an increase in fat mass in these patients (0.204; CI, -0.043 to 0.451; p = 0.101). Conclusions: childhood leukemia survivors have a high cardiovascular risk, characterized by an increase in IR, not associated with an increase in fat mass. This risk could justify the implementation of preventive actions in these long-lived patients.

Introducción: Material y métodos: estudio retrospectivo de supervivientes de leucemia aguda en edad infantil. Se seleccionaron aquellos supervivientes con diagnóstico de leucemia antes de los 16 años de edad, en un hospital de tercer nivel y durante el período 1998-2018, que hubieran finalizado su tratamiento como mínimo dos años antes. Se analizaron: niveles de adipokinas y metabolismo hidrocarbonado en sangre, composición corporal mediante bioimpedancia y evaluación ecográfica carotídea. Se tomaron además datos somatométricos. Resultados: de 82 niños con diagnóstico de leucemia aguda, con edades comprendidas entre 6 y 16 años, incluidos en el registro, solamente 22 cumplieron los criterios para ser incluídos en el estudio. Entre los resultados destaca que el 32 % de la muestra cumplían los criterios de sobrepeso-obesidad y el 36 % presentaban índices de resistencia insulínica (RI) elevados. Los niveles de leptina fueron más elevados en las mujeres (15,45 vs. 3,25; p = 0,044) y en los individuos con obesidad o sobrepeso, así como la ratio leptina/adiponectina, que se eleva en presencia de RI (2,52 vs. 0,45; p = 0,037). Se observó un incremento del grosor mediointimal carotídeo en relación con el IMC (0,008; IC: -0,002 a 0,013; p = 0,007) sin asociarse a un aumento de masa grasa en estos pacientes (0,204; IC: -0,043 a 0,451; p = 0,101). Conclusiones: los pacientes supervivientes de leucemia en la edad infantil tienen un riesgo cardiovascular elevado, caracterizado por un aumento de la RI no asociado a aumento de la masa grasa. Este riesgo podría justificar la implementación de medidas preventivas en estos pacientes, cada vez más longevos.

The leptin/adiponectin ratio as prognostic marker for dyslipidemia during 1 year of follow-up in pediatric patients receiving kidney replacement therapy.

Introduction: Background: leptin and adiponectin are associated with cardiovascular disease in chronic kidney disease (CKD) patients and could be useful prognostic factors. Objectives. to explore the usefulness of the leptin/adiponectin ratio (LAR) to predict the presence or worsening of dyslipidemia during 1 year of follow-up in children receiving kidney replacement therapy (KRT). Material and methods: a prospective cohort study was performed. Pediatric KRT patients aged between 8 and 17 years who were undergoing hemodialysis or peritoneal dialysis were included. At enrollment, the lipid profile, adiponectin and leptin levels, and somatometric measurements, including body fat percentage, were determined. At the one-year follow-up, the lipid profile was reassessed. Results: of the 70 patients included, the median age was 13 years, and there was no sex predominance (52.8 % males). At the end of follow-up, the patients were divided into three groups: those without dyslipidemia (WOD), those who developed or experienced worsening of their dyslipidemia (DWD) and those with persistent dyslipidemia (PD). A LAR > 0.85 (OR, 16.7) and body fat percentage (OR, 1.46) were associated with an increased risk of PD and DWD at 12 months, independently of urea level, BMI Z-score, benzafibrate treatment, CKD progression time, and replacement treatment. Conclusions: a LAR > 0.85 and fat body percentage at the beginning of follow-up were strongly associated with the presence, persistence or worsening of dyslipidemia at the 12-month follow-up in children with KRT.

Introducción: Antecedentes: la leptina y la adiponectina se asocian con enfermedad cardiovascular en los pacientes con enfermedad renal crónica (ERC) y podrían ser factores pronósticos útiles. Objetivos: explorar la utilidad del cociente leptina/adiponectina (LAR) para predecir la presencia o empeoramiento de la dislipidemia durante 1 año de seguimiento en niños que reciben terapia de reemplazo renal (TRR). Material y métodos: se realizó un estudio de cohortes prospectivo. Se incluyeron pacientes pediátricos con TRR de entre 8 y 17 años que estaban en hemodiálisis o diálisis peritoneal. Al inicio del estudio se determinaron el perfil lipídico, los niveles de adiponectina y leptina, y las mediciones somatométricas, incluido el porcentaje de grasa corporal. En el seguimiento de un año, se reevaluó el perfil de lípidos. Resultados: de los 70 pacientes incluidos, la mediana de edad fue de 13 años y no hubo predominio de sexo (52,8 % de varones). Al final del seguimiento, los pacientes se dividieron en tres grupos: aquellos sin dislipidemia (SD), aquellos que desarrollaron o experimentaron un empeoramiento de su dislipidemia (ED) y aquellos con dislipidemia persistente (PD). Un LAR > 0,85 (OR: 16,7) y el porcentaje de grasa corporal (OR: 1,46) se asociaron con un mayor riesgo de ED y PD a los 12 meses, independientemente del nivel de urea, la puntuación Z del IMC, el tratamiento con benzafibrato, el tiempo de progresión de la ERC y el tratamiento de reemplazo. Conclusiones: un LAR > 0,85 y el porcentaje de grasa corporal al inicio del seguimiento se asociaron fuertemente con la presencia, persistencia o empeoramiento de la dislipidemia a los 12 meses de seguimiento en niños con TRR.

The leptin/adiponectin ratio as prognostic marker for dyslipidemia during 1 year of follow-up in pediatric patients receiving kidney replacement therapy / Índice leptina/adiponectina como indicador pronóstico de dislipidemia durante 1 año de seguimiento en pacientes pediátricos que reciben terapia de reemplazo renal

Background: leptin and adiponectin are associated with cardiovascular disease in chronic kidney disease (CKD) patients and could be useful prognostic factors. Objectives: to explore the usefulness of the leptin/adiponectin ratio (LAR) to predict the presence or worsening of dyslipidemia during 1 year of follow-up in children receiving kidney replacement therapy (KRT). Material and methods: a prospective cohort study was performed. Pediatric KRT patients aged between 8 and 17 years who were undergoing hemodialysis or peritoneal dialysis were included. At enrollment, the lipid profile, adiponectin and leptin levels, and somatometric measurements, including body fat percentage, were determined. At the one-year follow-up, the lipid profile was reassessed. Results: of the 70 patients included, the median age was 13 years, and there was no sex predominance (52.8 % males). At the end of follow-up, the patients were divided into three groups: those without dyslipidemia (WOD), those who developed or experienced worsening of their dyslipidemia (DWD) and those with persistent dyslipidemia (PD). A LAR > 0.85 (OR, 16.7) and body fat percentage (OR, 1.46) were associated with an increased risk of PD and DWD at 12 months, independently of urea level, BMI Z-score, benzafibrate treatment, CKD progression time, and replacement treatment. Conclusions: a LAR > 0.85 and fat body percentage at the beginning of follow-up were strongly associated with the presence, persistence or worsening of dyslipidemia at the 12-month follow-up in children with KRT. (AU)

Antecedentes: la leptina y la adiponectina se asocian con enfermedad cardiovascular en los pacientes con enfermedad renal crónica (ERC) y podrían ser factores pronósticos útiles. Objetivos: explorar la utilidad del cociente leptina/adiponectina (LAR) para predecir la presencia o empeoramiento de la dislipidemia durante 1 año de seguimiento en niños que reciben terapia de reemplazo renal (TRR). Material y métodos: se realizó un estudio de cohortes prospectivo. Se incluyeron pacientes pediátricos con TRR de entre 8 y 17 años que estaban en hemodiálisis o diálisis peritoneal. Al inicio del estudio se determinaron el perfil lipídico, los niveles de adiponectina y leptina, y las mediciones somatométricas, incluido el porcentaje de grasa corporal. En el seguimiento de un año, se reevaluó el perfil de lípidos. Resultados: de los 70 pacientes incluidos, la mediana de edad fue de 13 años y no hubo predominio de sexo (52,8 % de varones). Al final del seguimiento, los pacientes se dividieron en tres grupos: aquellos sin dislipidemia (SD), aquellos que desarrollaron o experimentaron un empeoramiento de su dislipidemia (ED) y aquellos con dislipidemia persistente (PD). Un LAR > 0,85 (OR: 16,7) y el porcentaje de grasa corporal (OR: 1,46) se asociaron con un mayor riesgo de ED y PD a los 12 meses, independientemente del nivel de urea, la puntuación Z del IMC, el tratamiento con benzafibrato, el tiempo de progresión de la ERC y el tratamiento de reemplazo. Conclusiones: un LAR > 0,85 y el porcentaje de grasa corporal al inicio del seguimiento se asociaron fuertemente con la presencia, persistencia o empeoramiento de la dislipidemia a los 12 meses de seguimiento en niños con TRR. (AU)

Riesgo cardiovascular y resistencia insulínica en supervivientes de leucemia infantil / Cardiovascular risk and insulin resistance in childhood leukemia survivors

Material y métodos: estudio retrospectivo de supervivientes de leucemia aguda en edad infantil. Se seleccionaron aquellos supervivientes con diagnóstico de leucemia antes de los 16 años de edad, en un hospital de tercer nivel y durante el período 1998-2018, que hubieran finalizado su tratamiento como mínimo dos años antes. Se analizaron: niveles de adipokinas y metabolismo hidrocarbonado en sangre, composición corporal mediante bioimpedancia y evaluación ecográfica carotídea. Se tomaron además datos somatométricos. Resultados: de 82 niños con diagnóstico de leucemia aguda, con edades comprendidas entre 6 y 16 años, incluidos en el registro, solamente 22 cumplieron los criterios para ser incluídos en el estudio. Entre los resultados destaca que el 32 % de la muestra cumplían los criterios de sobrepeso-obesidad y el 36 % presentaban índices de resistencia insulínica (RI) elevados. Los niveles de leptina fueron más elevados en las mujeres (15,45 vs. 3,25; p = 0,044) y en los individuos con obesidad o sobrepeso, así como la ratio leptina/adiponectina, que se eleva en presencia de RI (2,52 vs. 0,45; p = 0,037). Se observó un incremento del grosor mediointimal carotídeo en relación con el IMC (0,008; IC: -0,002 a 0,013; p = 0,007) sin asociarse a un aumento de masa grasa en estos pacientes (0,204; IC: -0,043 a 0,451; p = 0,101). Conclusiones: los pacientes supervivientes de leucemia en la edad infantil tienen un riesgo cardiovascular elevado, caracterizado por un aumento de la RI no asociado a aumento de la masa grasa. Este riesgo podría justificar la implementación de medidas preventivas en estos pacientes, cada vez más longevos. (AU)

Material and methods: a retrospective study of childhood acute leukemia survivors. Survivors with a diagnosis of leukemia before 16 years of age in a tertiary hospital, during the period of 1998-2018, were selected, who had completed their treatment at least two years earlier. We examined: blood adipokine levels and carbohydrate metabolism, body composition by bioimpedance, and carotid status by ultrasound. Somatometric measures were also taken. Results: the registry showed 82 children diagnosed with acute leukemia, aged between 6 and 16 years. Only 22 met the criteria to be included in the study. Results reveled that 32 % of the sample met the criteria for overweight-obesity, and 36 % had high insulin resistance indexes (IR). Leptin levels were higher in women (15.45 vs. 3.25; p = 0.044) and in obese and overweight subjects, as was the leptin/adiponectin ratio, which rises in the presence of IR (2.52 vs. 0.45; p = 0.037). We observed an increase in carotid intima-media thickness in relation to BMI (0.008; CI, -0.002 to 0.013; p = 0.007) without any association with an increase in fat mass in these patients (0.204; CI, -0.043 to 0.451; p = 0.101). Conclusions: childhood leukemia survivors have a high cardiovascular risk, characterized by an increase in IR, not associated with an increase in fat mass. This risk could justify the implementation of preventive actions in these long-lived patients. (AU)

IS THERE A CORRELATION BETWEEN PLACENTAL LEPTIN AND MATERNAL GESTATIONAL FACTORS WITH ANTHROPOMETRIC DATA OF THE NEWBORN? / HÁ CORRELAÇÃO ENTRE LEPTINA PLACENTÁRIA E FATORES MATERNOS GESTACIONAIS COM DADOS ANTROPOMÉTRICOS DO RECÉM-NASCIDO?

Introduction: Leptin in maternal/fetal compartments, and its mechanisms, are being elucidated. Hormonal factors, genetic predisposition, chromosomal formation, environmental conditions, infections and the use of toxic substances may be related to negative outcomes in pregnancy, the fetus and the neonate. Objective: To analyze the correlation of placental leptin with maternal gestational factors and anthropometric data on the newborn. Method: Cross-sectional, descriptive, uncontrolled study. The sample consisted of 103 parturients and their respective newborns (NB). They were arranged according to the presented gestational risk factors and usual risk factors, and later, blood was collected from the placental fragments, for the serum leptin dosage. Gestational age, weight, height, BMI and head circumference were evaluated. Results: There was no statistically significant difference in leptin distribution below or above 0.1 in mothers with and without gestational risk factors. However, there was a trend in those with diabetes and obesity. Regarding the assessment of the presence and absence of maternal gestational factors between them and the level of placental leptin, only the obesity factor was significant. When the association between NB characteristics and leptin values was evaluated, no significant difference was observed; however, when related to gender, there was twice as much in females. In the assessment between weight/GA with placental leptin, there was no difference, but it was superior in big for gestational age NBs. Conclusion: Placental leptin was correlated with maternal gestational obesity risk, but without correlation with NB anthropometric data.

Introdução: lLeptina nos compartimentos materno/fetais, e seus mecanismos, estão sendo elucidados. Fatores hormonais, predisposição genética, formação cromossômica, condições ambientais, infecções e a utilização de substâncias tóxicas podem estar relacionadas a desfechos negativos na gestação, no feto e no neonato. Objetivo: Analisar a correlação da leptina placentária com fatores maternos gestacionais e dados antropométricos do recém-nascido. Método: Estudo transversal, descritivo, não controlado. A amostra constou de 103 parturientes e seus respectivos recém-nascidos (RN). As parturientes foram dispostas conforme os fatores de risco gestacionais apresentados e fatores de risco habituais, e posteriormente coletado sangue dos fragmentos placentários, para a dosagem sérica da leptina. Foram avaliados a idade gestacional, peso, estatura, IMC e perímetro cefálico. Resultados: Não houve diferença estatisticamente significativa na distribuição da leptina inferior ou superior a 0,1 em mães com e sem os fatores de risco gestacionais. No entanto verificou-se tendência naquelas com diabete e obesidade. Quanto à avaliação da presença e ausência de fatores maternos gestacionais entre si e o nível de leptina placentária, apenas o fator obesidade foi significante. Quando avaliada a associação entre as características do RN e os valores de leptina não foi observada diferença significativa; no entanto, houve quando relacionada ao gênero, o dobro no sexo feminino. Na avaliação entre peso/IG com leptina placentária não houve diferença, porém foi superior em RN's grande para a idade gestacional. Conclusão: A leptina placentária apresentou correlação com o risco materno gestacional de obesidade, mas sem correlação com a antropometria do RN.

INDICATION OF THE JOINT MOBILIZATION TECHNIQUE AFTER BILIRUBIN VERSUS LEPTIN ANALYSIS IN PTNB SUBMITTED TO PHOTOTHERAPY / INDICAÇÃO DA TÉCNICA DE MOBILIZAÇÃO ARTICULAR APÓS ANÁLISE DA BILIRRUBINA VS. LEPTINA EM RECÉM NATOS PRÉ-TERMO SUBMETIDOS À FOTOTERAPIA

Introduction: The limits for the viability of survival in preterm births have increased. Complications inherent to the immaturity of the systems lead to metabolic alterations. Physical activity programs have been applied in neonatal ICUs, seeking improvement in bone mineralization, weight gain and increase in leptin levels. Objectives: To analyze the serum levels of leptin and bilirubin in premature infants exposed to phototherapy, in order to establish a safe practice of joint mobilization. Method: Analytical, longitudinal, prospective cohort study with a sample composed of 108 parturients and their respective PTNBs arranged in 2 groups: control group 28 NBs and study group 23 NBs. The variables studied were: weight, gestational age, BMI, sex, serum levels of leptin in the placenta, serum levels of bilirubin, reticulocytes, 12 h, 24 h and rebound leptin, nutrition, body mass index. Results: Regarding weight, gestational age, BMI and sex, the sample was homogeneous. Regarding the concentration of leptin in the placenta and in the 12 h NB, there were no statistically significant differences. When the leptin concentrations were analyzed at the different evaluation moments of the study group, a statistically 3 significant difference (p<0.001) was found between all moments. Comparing assessment 2 to 2 of the study group, a statistically significant difference was found between placentas at all times. There was a trend of difference between 24 h with phototherapy and rebound, the same observed in the control group. There was no difference in leptin distributions in relation to placental time and 12 h between groups. Comparing each group with a leptin value lower than 0.1 the placental time and 12 h showed difference. There was a difference between 24 h with phototherapy and rebound. As for reticulocytes, there was a tendency to decrease in relation to the beginning/rebound (p<0.004). There was no correlation between leptin/bilirubin, leptin/reticulocytes, onset of nutrition and BMI/leptin. Conclusion: Phototherapy does not increase serum leptin levels in PTNBs, making joint mobilization a safe practice in this group.

Introdução: Os limites para a viabilidade de sobrevida em nascimentos prematuros têm aumentado. As complicações inerentes à imaturidade dos sistemas acarreta alterações metabólicas. Programas de atividade física têm sido aplicados em UTIs neonatais, buscando melhora na mineralização óssea, ganho de peso e aumento dos níveis de leptina. Objetivos: Analisar os níveis séricos de leptina e bilirrubina em prematuros expostos à fototerapia, a fim de estabelecer prática segura de mobilização articular. Método: Estudo analítico, longitudinal, prospectivo do tipo coorte com amostra composta por 108 parturientes e seus respectivos RNPT dispostos em 2 grupos: grupo controle 28RNs e grupo estudo 23RNs. As variáveis estudadas foram: peso, idade gestacional, IMC, sexo, dosagem sérica de leptina na placenta, dosagem sérica de bilirrubina, reticulócitos, leptina de 12 h, 24 h e rebote,nutrição, índice de massa corporal. Resultados: Quanto ao peso, idade gestacional, IMC e sexo, houve homogeneidade da amostra. Quanto à concentração de leptina na placenta e no RN 12 h não houve diferenças estatisticamente significativas. Quando analisadas as concentrações de leptina nos diferentes momentos de avaliação do grupo estudo, encontrou-se diferença estatisticamente significativa (p<0,001) entre todos os momentos. Comparando avaliação 2 a 2 do grupo estudo, encontrou-se diferença estatisticamente significativa entre placenta em todos os momentos. Verificou-se tendência de diferença entre 24 h com fototerapia e rebote, o mesmo observado no grupo controle. Não houve diferença nas distribuições da leptina em relação ao momento placenta e 12 h entre os grupos. Comparando cada grupo com o valor de leptina inferior a 0,1 o momento placenta e 12 h apresentaram diferença. Houve diferença entre 24 h com fototerapia e rebote. Quanto aos reticulócitos ocorreu tendência à diminuição em relação ao início/rebote (p<0,004). Não houve correlação entre leptina/bilirrubina, leptina/reticulócitos, início da nutrição e IMC/leptina. Conclusão: A fototerapia não aumenta níveis séricos de leptina em RNPT, tornando a mobilização articular prática segura neste grupo.

Obesidade genética não sindrômica: histórico, fisiopatologia e principais genes / Non-syndromic genetic obesity: history, pathophysiology and key genes

A obesidade é definida pelo excesso de gordura corporal acumulada no tecido adiposo quando o indivíduo atinge valores de IMC igual ou superior a 30 Kg/m2. Constitui um dos principais fatores de risco para várias doenças não transmissíveis (DNTs) como por exemplo, diabetes mellitus tipo 2 (DM2), doenças cardiovasculares, hipertensão arterial, acidente vascular cerebral e até mesmo o câncer. Embora a obesidade esteja diretamente relacionada com o consumo calórico excessivo em relação ao gasto energético diário, sua etiologia pode estar associada aos baixos níveis de atividade física, às alterações neuroendócrinas e aos fatores genéticos. Considerando o componente genético, esta pode ser classificada como sindrômicas e estar associada às alterações cromossômicas estruturais ou numéricas, ou como não sindrômica, quando relacionada, principalmente, com os polimorfismos de nucleotídeos simples (SNPs) em alelos que atuam como herança monogênica, ou ainda com a interação vários genes (poligênica multifatorial). Apesar de existirem muitas etiologias diferentes, normalmente a obesidade é tratada a partir da mesma abordagem, desconsiderando a fisiologia que a desencadeou. Dessa forma, o objetivo do presente trabalho foi abordar a obesidade genética não sindrômica por meio a) da descrição breve de perspectiva histórica sobre seu entendimento; b) da exposição dos principais mecanismos moleculares envolvidos com o controle de peso; c) da compilação dos principais genes e SNPs relacionados; d) da definição dos principais genes; e e) da abordagem das principais perspectivas de intervenção.

Obesity is defined as excess body fat accumulated in the adipose tissue when the individual reaches BMI values equal to or greater than 30 kg/m2. It is one of the main risk factors for several non-communicable diseases (NCDs), such as Type 2 Diabetes mellitus (T2D), cardiovascular diseases, high blood pressure, stroke and even cancer. Although obesity is directly related to excessive calorie intake in relation to daily energy expenditure, its etiology may be associated with low levels of physical activity, neuroendocrine changes, and genetic factors. Considering the genetic component, it can be classified as syndromic and be associated with chromosomal or numerical changes, or as non-syndromic and being related mainly to single nucleotide polymorphisms (SNPs) in alleles that act as monogenic inheritance, or with an interaction of several genes (multifactorial polygenic). Although there are many different etiologies, obesity is usually treated using the same approach, disregarding the physiology that triggered it. Thus, the aim of this study was to address non-syndromic genetic obesity through a) a brief description of a historical perspective on its understanding; b) the exposure of the main molecular mechanisms involved in weight control, c) the compilation of the key genes and related SNPs, d) the definition of the key genes and e) the approach of the main intervention representations.

Distribution of leptin receptors in the brain stem: possible route in the pathophysiology of neuromuscular control of airway resistance during sleep.

INTRODUCTION: Leptin, a hormone related to satiety, has been studied because of its association with obesity and sleep apnea. The distribution of leptin receptors in the brain stem, and in the hypoglossal nucleus, has not yet been described. The stimulation of these muscles has been studied in the treatment of sleep apnea. OBJECTIVE: to detail the presence of leptin receptors in the nuclei of these nerves to enable studies of stimulation of this region through leptin. METHODS: the brains of five cadavers, removed during necropsy, collected at the Death Verification Service were included. An informed consent was signed by a family member (wife, mother or son/daughter) who answered specific questionnaire concerning comorbities. Anthropometric measurements were recorded. The medulla oblongata and pons fragments were identified. Immunohistochemical staining analysis was performed to identify the location of the leptin receptors. RESULTS: In the immunohistochemical analysis an intense staining signal of the brownish coloration of neurons was evidenced in the hypoglossal nerve nucleus, moderate in the olivary nucleus and mild in the dorsal nucleus of the vagus and trigeminal nucleus. In motor neurons, more intense brown pigmentation can be observed in the nucleus and cytoplasm when compared to sensory neurons. CONCLUSION: The immunoexpression of leptin receptor was demonstrated in the motor neurons of the human hypoglossal nucleus. These results may contribute to unravel details of the pathophysiology of neuromuscular control of airway collapse during sleep and to the development of new drugs capable of improving the neuromuscular tone of upper airway in apneic individuals.

Espectros clínicos y fisiopatológicos del síndrome de Bernardinelli Seip / Clinical and pathophysiological spectra of Bernardinelli Seip syndrome

Introducción: La lipodistrofia congénita de Berardinelli-Seip es un síndrome genético autosómico recesivo, caracterizado por la ausencia generalizada del tejido adiposo, el déficit de leptina y las alteraciones metabólicas incluidas la resistencia a la insulina, la esteatohepatitis y la hipertrigliceridemia. Objetivo: Definir los diferentes espectros clínicos y fisiopatológicos del síndrome y su relación con el fenotipo definiendo las estrategias terapéuticas actuales. Métodos: Se realizó una búsqueda bibliográfica no sistemática en las bases de datos Science Direct, EMBASE, LILACS, Redalyc, SciELO y PubMed. Los criterios de inclusión fueron publicaciones en inglés, portugués o español, en las que el título y las palabras clave, abordaban el tema planteado con una vigencia de 10 años. Se obtuvieron 50 artículos relacionados con el síndrome, de los cuales 30 fueron seleccionados para su revisión. Conclusiones: El diagnóstico de la enfermedad es principalmente clínico. Se establece en presencia de tres criterios mayores o la combinación de dos mayores con dos menores y/o por la identificación de variantes patogénicas por medio del estudio genético y molecular. La dieta y el ejercicio conjuntamente con la administración de la metreleptina son pilares fundamentales en el manejo de estos pacientes. El reconocimiento temprano del síndrome es esencial para prevenir las complicaciones, y brindar asesoría genética y reproductiva a los pacientes y familiares(AU)

Introduction: Berardinelli-Seip congenital lipodystrophy is an autosomal recessive genetic syndrome, characterized by the general absence of adipose tissue, leptin deficiency and metabolic alterations including insulin resistance, steatohepatitis and hypertriglyceridemia. Objective: To present the different clinical and pathophysiological spectra of the syndrome, its relationship with the phenotype, defining the current therapeutic strategies. Methods: A non-systematic bibliographic search was carried out in Science Direct, EMBASE, LILACS, Redalyc, SciELO and PubMed databases. The inclusion criteria were publications in English, Portuguese and Spanish, in which the title and keywords included information pertinent to the stated objective with a periodicity of 10 years, 50 articles were retrieved, and 30 of them were selected. Conclusions: The diagnosis of the disease is mainly clinical. It is established in the presence of three major criteria or the combination of two major and two minor criteria and/or by the identification of pathogenic variants through genetic and molecular studies. Diet and exercise together with the administration of metreleptin are fundamental pillars in the management of these patients. Early recognition of the syndrome is essential to prevent complications, allowing genetic and reproductive counseling to be provided to patients and their families(AU)