Efficacy of anthropometric measures for identifying cardiovascular disease risk in adolescents: review and meta-analysis.

INTRODUCTION: To compare the ability of Body Mass Index (BMI), waist circumference (WC) and waist to height ratio (WHtR) to estimate cardiovascular disease (CVD) risk levels in adolescents. EVIDENCE ACQUISITION: A systematic review and meta-analysis was performed after a database search for relevant literature (Cochrane, Centre for Review and Dissemination, PubMed, British Nursing Index, CINAHL, BIOSIS citation index, ChildData, metaRegister). EVIDENCE SYNTHESIS: The study included 117 records representing 96 studies with 994,595 participants were included in the systematic review, 14 of which (13 studies, N.=14,610) were eligible for the meta-analysis. The results of the meta-analysis showed that BMI was a strong indicator of systolic blood pressure, diastolic blood pressure, triglycerides, high-density lipoprotein cholesterol and insulin; but not total cholesterol, low-density lipoprotein or glucose. Few studies were eligible for inclusion in the meta-analysis considering WC or WHtR (N.≤2). The narrative synthesis found measures of central adiposity to be consistently valid indicators of the same risk factors as BMI. CONCLUSIONS: BMI was an indicator of CVD risk. WC and WHtR were efficacious for indicating the same risk factors BMI performed strongly for, though there was insufficient evidence to judge the relative strength of each measure possibly due to heterogeneity in the methods for measuring and classifying WC.

[Hypoglycemia induced by a solitary fibrous tumor of the lung or Doege-Potter syndrome: Report of one case]. / Hipoglicemia inducida por tumor fibroso solitario pulmonar: Síndrome de Doege-Potter.

We report the case of a 75-year-old man who was admitted to the hospital with symptoms of severe hypoglycemia. He had a history of solitary fibrous tumor diagnosed by Pathology after its complete surgical resection eight years before. The laboratory examination reported hypoglycemia with inhibited Insulin secretion. A computed tomography of the thorax revealed a large solid heterogeneous mass in the left hemithorax. Solitary fibrous tumor is a rare neoplasm. The association of solitary fibrous tumor and paraneoplastic hypoglycemia is known as Doege-Potter syndrome and occurs in less than 5% of all solitary fibrous tumors.

[Familial partial lipodystrophy type 1. A rare or underdiagnosed syndrome?]. / Lipodistrofia parcial familiar tipo 1. ¿Un síndrome subdiagnosticado o raro?

Familial partial lipodystrophy (FPL) type 1 is a syndrome characterized by loss of subcutaneous fat in arms and legs and an excess of body fat in face, neck, and torso. This rare syndrome is usually diagnosed when patients present cardiovascular complications or pancreatitis due to the severe metabolic abnormalities. Here we present the case of a 45 year old diabetic female without any pathological family history, a poor glycemic control (HbA1c 11.7%), hypertriglideridemia (3000 mg/dl), a body mass index (BMI) of 38, thin limbs, subcutaneous fat loss in gluteal area and ledge of fat above them, prominent veins in lower extremities, moon face, and acanthosis nigricans; as well as hypertension (150/100 mmHg) and subcutaneous folds measuring less than average were observed. Hypercortisolism was discarded and leptin levels were measured (16.8 mg/ml, VR: BMI > 30: 50 mg/ml). Due to these clinical and biochemical manifestations, and low leptin levels (16.8 mg/ml), Kobberling syndrome was suspected; however, LMNA mutation analysis was negative. Changes in lifestyle and treatment with fenofibrate, biphasic insulin 50/50, and enalapril were initiated showing a a significant metabolic improvement: HbA1c (7.8%) and TG (243 mg/dl). FPL type 1 is a familial disease, although there are spontaneous cases. No specific mutation is responsible for this syndrome. Due to its clinical manifestations, Cushing syndrome must be discarded.

[Adrenal carcinoma induced hypoglycemia]. / Hipoglucemia inducida por carcinoma adrenal.

Adrenal carcinoma is a rare malignancy of poor prognosis. The most common clinical presentation is secondary to hormone production, while the development of symptomatic hypoglycemia is exceptional. We report the case of a 37 year old-woman admitted to hospital with severe hypoglycemia, hypertension, hypokalemia and amenorrhea. In the laboratory we found hypoglycemia, with low insulin levels, and androgen levels in tumor range. CT of abdomen and pelvis showed a heterogeneous lesion of solid appearance without a cleavage plane relative to liver parenchyma, and intense contrast enhancement. Retroperitoneal mass was removed, and the patient evolved without complications, blood glucose and potassium were normalized, blood pressure stabilized and menstrual cycles recovered.

[Triglycerides/HDL-cholesterol ratio: in adolescents without cardiovascular risk factors]. / Indice triglicéridos/HDL-colesterol: en una población de adolescentes sin factores de riesgo cardiovascular.

Triglycerides/HDL-cholesterol ratio (TG/HDL) is an easy resource determination and it has good correlation with the HOMA index in adults. Due to physiological insulin resistance (IR) in adolescence it is necessary to find markers of IR independent of age, sex and pubertal stage. The objective was to identify reference values of TG/HDL ratio in a population of adolescents without cardiovascular risk factors. We evaluated 943 adolescents, 429 females and 514 males between 11 and 14. Anthropometric measures were determined and body mass index was calculated (BMI). Blood was extracted after 12 hours of fasting to determine glucose, triglycerides, HDL. The metabolic syndrome (MS) was diagnosed according to criteria of NCEP/ATP III modified by Cook. We excluded adolescents with MS or any component of it. We evaluated 562 adolescents (289 women and 273 men) with a weight of 48.91 +/- 6.51kg, BMI: 18.95 +/- 1.78, systolic blood pressure of 108.12 +/- 13.60 mmHg, diastolic blood pressure: 63.82 +/- 9.43 and waist circumference: 65.09 +/- 4.54 cm. TG/HDL ratio was 1.25 +/- 0.43, with a 95 percentile of 2.05. In adults, TG/HDL ratio greater than 3 is a marker of insulin resistance. We believe that a higher value to 2.05 might be a good index of insulin resistance in adolescence. TG/HDL ratio has the advantage of being methodologically simpler, more economical and independent of pubertal stage.

Cardiometabolic risk factors as apolipoprotein B, triglyceride/HDL-cholesterol ratio and C-reactive protein, in adolescents with and without obesity: cross-sectional study in middle class suburban children.

BACKGROUND: The prevalence of obesity (OB), overweight (OW), and metabolic syndrome (MS) has increased worldwide. That imposes a substantial risk for type 2 diabetes and premature cardiovascular disease. However, to date no unified criteria exist to asses risk or outcomes in children and adolescents. OBJECTIVES: To establish the presence of OB/OW and MS and risk factors for cardiovascular disease in adolescents. DESIGN AND SUBJECTS: Male (n = 514) and female (n = 429) adolescents from high school were studied (11-14 yr). Weight, height, body mass index (BMI), waist circumference (WC), and blood pressure were determined in all subjects. Glucose, lipoprotein profile, apolipoprotein B (apoB), and high-sensitivity C-reactive protein (hs-CRP) levels were measured. Triglyceride/high-density lipoprotein-cholesterol (TG/HDL-cholesterol) ratio was calculated. RESULTS: The frequency of OB/OW and MS were 22.2 and 3.7%, respectively. In comparison to healthy adolescents, TG/HDL-cholesterol ratio was increased in OB/OW (2.9 ± 2.5 vs. 1.6 ± 1.0) and MS groups (4.0 ± 2.5 vs. 1.6 ± 0.9), p < 0.001. OB/OW adolescents presented higher values of hs-CRP in comparison to non-obese, median (range): 1.9 (0.1-9.4) vs. 1.4 (0.1-9.9), mg/L, p < 0.001. ApoB (mean ± SD) was 71 ± 21 mg/dL in MS group and 59 ± 17 mg/dL in those without MS (p < 0.001). TG/HDL-cholesterol ratio positively correlated with BMI (r = 0.18, p < 0.001), WC (r = 0.24, p < 0.001), and apoB (r = 0.24, p < 0.001); hs-CRP correlated with WC (r = 0.14, p < 0.001) and BMI (r = 0.17, p < 0.001). CONCLUSIONS: Even when the frequency of OB, OW, and MS in adolescents was low, those subjects presented an atherogenic lipoprotein. These findings emphasize the importance to evaluate cardiovascular risk factors in adolescents to assess strategies to prevent future disease.

Metabolic syndrome in Argentine women: ATPIII, IDF, IDF/AHA/NHLBI; what criterion should be used?

INTRODUCTION: The menopause and the metabolic syndrome (MS) are related with the increase of the risk of cardiovascular diseases. OBJECTIVES: To evaluate the existence of metabolic risk factors and the prevalence of MS in pre- and post-menopausal women. SUBJECTS: 253 women: 120 pre-menopausal and 133 post-menopausal. Anthropometric, arterial pressure and waist circumference measurements were carried out. Glycaemia, lipids, creatinine, hepatogram, uric acid and thyroid-stimulating hormone were dosed. RESULTS: Statistical higher registries of arterial pressure, levels of glycaemia, total cholesterol, low-density lipoprotein, triglycerides and TG/high-density lipoprotein relation were observed among post-menopausal patients. As regards this group, the MS diagnosis was considerably higher, being the same by all the criteria. CONCLUSIONS: We found more prevalence of cardiometabolic and MS risk factors among the group of post-menopausal patients. The responsible mechanisms would respond to the secondary hypoestrogenaemia at the cease of the ovarian function. Because of this fact, menopausal women should be considered a risk group for the development of MS.

Honrar el juramento hipocrático / Honor the Hippocratic Oath

"No llevar otro propósito que el bien y la salud a los enfermos" fue la base del juramento que Hipócrates trasmitió a sus discípulos. Recordarlo nos hace necesariamente reflexionar sobre el rol de los médicos para mantener este principio ético que, a más de dos milenios de vigencia, continúa siendo el motor que impulsa nuestra práctica cotidiana. Asistimos a una era extraordinaria con el desarrollo exponencial de nuevos conocimientos. Se estima que la humanidad cada 2 años duplica la información y probablemente estos lapsos se reduzcan a solo 11 horas en las próximas décadas, de acuerdo a algunos pronósticos.

The coexistence of hypercalcemia and hypoglycemia in a patient with a renal tumor and B cell lymphoma.

Paraneoplastic syndromes are a heterogeneous group of malignant diseases caused by events which involve endocrine, immune and metabolic aspects and whose symptoms vary according to the substance produced and the primary tumor. Hypercalcemia is a frequent complication in cancer patients. Prognosis of cancer patients with hypercalcemia is usually poor. A factor called parathyroid hormone related peptide, whose actions are similar to those of the parathyroid hormone, is thought to be the most common cause of malignancy associated hypercalcemia. Non-islet hypoglycemic cell tumor consists of a rare syndrome characterized by the presence of a solid tumor and severe fasting hypoglycemia determined by an insulin-independent pathway. We report a case of a 59-year-old-man with a renal tumor and a T-cell rich large B cell lymphoma who was hospitalized due to severe hypercalcemia and hypoglycemia. The laboratory examination reported hypercalcemia with inhibited PTH and hypoglycemia with inhibited insulin secretion, arriving to the conclusion of tumoral peptide production. He received denosumab and corticoid therapy. The patient died one month later despite initial improvement after medical treatment. While a single paraneoplastic manifestation may be expected in most tumors, the coexistence of two or more of them is rare, except in hepatocellular carcinomas, and it has not yet been described in renal tumors.

Influence of Normo- and Hypogonadal Condition, Hyperuricemia, and High-Fructose Diet on Renal Changes in Male Rats.

Background. There is a gender disparity in the incidence, prevalence, and progression of renal disease. The object of this paper is to evaluate the presence and type of renal lesion in normogonadic and hypogonadic male rats in a mild hyperuricemia induced condition and exposed to a high-fructose diet. Methods. 56 adult male Wistar rats were used. Animals were divided into two groups, one normogonadic (NGN) and one hypogonadic (HGN), and each group was divided into four subgroups in accordance with the treatment: control with only water (C), fructose (F), oxonic acid (OA), and fructose + oxonic acid (FOA). Renal changes were evaluated by measuring glomerulosclerosis, fibrosis, and arteriolar media/lumen (M/L) ratio. Results. The OA and FOA groups presented significantly hypertension (p < 0.001). The OA group significantly increased (p < 0.05) the percentage of glomerulosclerosis as well as the FOA group (p < 0.001). When comparing NGN versus HGN, we observed a trend to a lower glomerulosclerosis in the latter. A higher arteriolar M/L ratio was observed in the OA (p < 0.05) and FOA (p < 0.001). Conclusion. Hyperuricemia conditions and a high-fructose diet favor blood pressure increase together with changes in the arteriolar media/lumen ratio and renal glomerular damage. These changes were more apparent in normogonadic animals.

Alteraciones electrolíticas y del metabolismo en pacientes con diabetes mellitus y enfermedad renal crónica. Parte 1 / Electrolyte and metabolism alterations in patients with diabetes mellitus and chronic kidney disease. Part 1

En el paciente con diabetes mellitus (DM) y enfermedad renal crónica (ERC), las alteraciones electrolíticas y metabólicas constituyen un verdadero desafío. En noviembre de 2021, el Comité de Nefropatía de la Sociedad Argentina de Diabetes realizó una jornada científica con el objetivo de actualizar las alteraciones hidroelectrolíticas y del metabolismo óseo mineral, y las consideraciones dietarias en ERC y DM.

In patients with diabetes mellitus (DM) and chronic kidney disease (CKD), electrolyte and metabolic alterations constitute a real challenge. In November 2021, the Nephropathy Committee of the Argentine Diabetes Society held a scientific conference with the aim of updating hydroelectrolytic and mineral bone metabolism disorders, and dietary considerations in CKD and DM.

Jornadas del Comité de Nefropatía de la Sociedad Argentina de Diabetes. Actualización de cirugía bariátrica en paciente con diabetes y enfermedad renal. Parte 2 / Conference of the Nephropathy Committee of the Argentine Diabetes Society. Bariatric surgery update in a patient with diabetes and kidney disease. Part 2

La prevalencia de obesidad y diabetes mellitus se asocia al desarrollo de enfermedad renal crónica y estadios terminales de la misma. En individuos con obesidad se produce un mecanismo de hiperfiltración, probablemente compensatorio para satisfacer la alta demanda metabólica asociada al aumento del peso corporal, con la presencia de proteinuria en individuos sin enfermedad renal. La histopatología muestra una glomeruloesclerosis focal y segmentaria relacionada con la obesidad en un marco de glomerulomegalia. La cirugía metabólica es el medio más efectivo para obtener una pérdida de peso sustancial y persistente. Se ha demostrado la superioridad de la cirugía sobre el tratamiento médico no solo para lograr un mejor control glucémico, sino también para la reducción de los factores de riesgo cardiovascular. Los mecanismos parecen extenderse más allá de la magnitud de la pérdida de peso e incluyen mejoras tanto en los perfiles de incretinas como en la secreción y la sensibilidad a la insulina. El Comité de Nefropatía de la Sociedad Argentina de Diabetes realizó esta revisión sobre los mecanismos involucrados en la obesidad como causa de enfermedad renal o empeoramiento de la misma por diabetes, y los mecanismos a través de los cuales la cirugía bariátrica beneficiaría a los pacientes con diabetes y enfermedad renal crónica en todos los estadios de la misma, así como los controles pre y posquirúrgicos en este tipo de cirugías.

The prevalence of obesity and diabetes mellitus are associated with the development of chronic kidney disease and its terminal stages. In individuals affected by obesity, a probably compensatory hyperfiltration mechanism occurs to satisfy the high metabolic demand associated with increased body weight; it is also associated with the presence and development of proteinuria in individuals without kidney disease. Histopathology shows obesity-related focal and segmental glomerulosclerosis in a setting of glomerulomegaly. Metabolic surgery is the most effective means of obtaining substantial and lasting weight loss. The superiority of surgery over medical treatment has been demonstrated only to achieve better glycemic control, as well as a reduction in cardiovascular risk factors. The mechanisms appear to extend beyond the magnitude of weight loss and include improvements in incretin profiles, insulin secretion, and insulin sensitivity. The Nephropathy Committee of the Argentine Diabetes Society carried out this review on mechanisms involved in obesity as a cause of kidney disease or worsening of kidney disease due to diabetes, the mechanisms by which bariatric surgery would benefit patients with diabetes and kidney disease chronic and its terminal stages, the pre and post-surgical controls that should be performed by patients undergoing this type of surgery

Jornadas del Comité de Nefropatía de la Sociedad Argentina de Diabetes. Actualización de cirugía bariátrica en paciente con diabetes y enfermedad renal. Parte 1 / Conference of the Nephropathy Committee of the Argentine Society of Diabetes. Bariatric surgery update in a patient with diabetes and kidney disease. Part 1

La prevalencia de obesidad y diabetes mellitus se asocia al desarrollo de enfermedad renal crónica y estadios terminales de la misma. En individuos con obesidad, se produce un mecanismo de hiperfiltración, probablemente compensatorio para satisfacer la alta demanda metabólica asociada al aumento del peso corporal, con la presencia de proteinuria, en individuos sin enfermedad renal. La histopatología muestra una glomeruloesclerosis focal y segmentaria relacionada con la obesidad en un marco de glomerulomegalia. La cirugía metabólica es el medio más efectivo para obtener una pérdida de peso sustancial y persistente. Se ha demostrado la superioridad de la cirugía sobre el tratamiento médico no solo para lograr un mejor control glucémico, sino también para la reducción de los factores de riesgo cardiovascular. Los mecanismos parecen extenderse más allá de la magnitud de la pérdida de peso e incluyen mejoras tanto en los perfiles de incretinas como en la secreción y la sensibilidad a la insulina. El Comité de Nefropatía de la Sociedad Argentina de Diabetes realizó esta revisión sobre los mecanismos involucrados en la obesidad como causa de enfermedad renal o empeoramiento de la misma por diabetes, y los mecanismos a través de los cuales la cirugía bariátrica beneficiaría a los pacientes con diabetes y enfermedad renal crónica en todos los estadios de la misma, así como los controles pre y posquirúrgicos en este tipo de cirugías.

The prevalence of obesity and diabetes mellitus are associated with the development of chronic kidney disease and its terminal stages. In individuals affected by obesity, a probably compensatory hyperfiltration mechanism occurs to satisfy the high metabolic demand associated with increased body weight; it is also associated with the presence and development of proteinuria in individuals without kidney disease. Histopathology shows obesity-related focal and segmental glomerulosclerosis in a setting of glomerulomegaly. Metabolic surgery is the most effective means of obtaining substantial and lasting weight loss. The superiority of surgery over medical treatment has been demonstrated only to achieve better glycemic control, as well as a reduction in cardiovascular risk factors. The mechanisms appear to extend beyond the magnitude of weight loss and include improvements in incretin profiles, insulin secretion, and insulin sensitivity. The Nephropathy Committee of the Argentine Diabetes Society carried out this review on mechanisms involved in obesity as a cause of kidney disease or worsening of kidney disease due to diabetes, the mechanisms by which bariatric surgery would benefit patients with diabetes and kidney disease chronic and its terminal stages, the pre and post-surgical controls that should be performed by patients undergoing this type of surgery.

Ten years cardiovascular risk estimation according to Framingham score and non HDL-cholesterol in blood donors.

UNLABELLED: Cardiovascular disease (CVD) is currently the primary cause of morbidity and mortality. AIMS: (1) Assess the 10 years risk for CVD in Argentinean blood donors, according to Framingham score (updated by ATP III), (2) evaluate the prevalence of the MS, (3) evaluate non HDL-cholesterol level in this population as other risk for CVD. MATERIALS AND METHODS: A prospective, epidemiological, transversal study was performed to evaluate 585 volunteer blood donors for two years. Non HDL-C was calculated as total cholesterol minus HDL-C and we evaluated the 10 years risk for CVD according to Framingham score (updated by ATP III). RESULTS: Metabolic syndrome prevalence was estimated according to ATP III and IDF criteria. Non HDL-C was (media±SD) 178.3±48.0 mg/dl in participants with MS and 143.7±39.3 mg/dl without MS (ATPIII) and 160.1±43.6 mg/dl in participants with MS and 139.8±43.1 mg/dl without MS (IDF). Participants with MS presented an OR of 3.1; IC 95% (2-5) of CVD according to de Framingham score. CONCLUSION: Individuals with MS and elevated non HDL-C are at a higher estimated risk for cardiovascular events in the next 10 years according to the Framingham risk score.

Resultados preliminares de un estudio de evaluación de factores de riesgo cardiovascular en estudiantes de la Universidad de Buenos Aires / Preliminary results of an evaluation study of cardiovascular risk factors in students of Buenos Aires Univesity

Introducción: el síndrome metabólico (SM) aumenta el riesgo de enfermedad cardiovascular. Esta asociación varía según la edad, factores étnicos, económicos y ambientales. El SM no se evaluó en jóvenes de la población argentina. Objetivos: evaluar los componentes del SM en estudiantes de la Universidad de Buenos Aires. Materiales y métodos: se evaluaron 1.550 estudiantes, de 18 a 40 años, en un estudio transversal epidemiológico durante un período de 12 meses. Criterios de exclusión: embarazo, consumo de alcohol o drogas. Se analizaron peso, talla, presión arterial y circunferencia de la cintura (CC). Se midieron los niveles en sangre de glucosa, LDL-C, triglicéridos (TG) y HDL-C. Se calcularon el índice de masa corporal y TG/HDL-C. El SM se definió según los criterios del ATP III. Consideramos alto LDL-C si era >130 mg/dL y TG elevados cuando eran >150 mg/dL. Resultados: la media de edad fue de 25±4,8 años, el 60,2% fue mujer. Prevalencia de factores de riesgo: obesidad 6,6%, sobrepeso 21,9%, glucemia anormal 0,4%, alto LDL-C 12,8%, alto TG 9,2%, bajo HDL-C 9,2%, hipertensión 3,6%, alto TG/HDL 5%, aumento de CC 6,6%, SM 2,5%. Conclusiones: encontramos baja prevalencia de SM en jóvenes estudiantes universitarios

Introduction: metabolic syndrome (MS) increased risk of cardiovascular disease. This association varies by age, race, ethnic, economic and environmental factors. MS in young people has not been evaluated on argentinian population. Objectives: to evaluate the components of the metabolic syndrome in students of the University of Buenos Aires. Materials and methods: a sample of 1.550 students from 18 to 40 years were evaluated on an epidemiological cross-sectional study in a 12 months period. Exclusion criteria: pregnancy, alcohol intake or drugs that affect hepatic parameters. Weight, height, blood pressure and waist circumference (WC) were evaluated. Blood levels of glucose, LDL-C, triglycerides (TG) and HDL-C were measured. Body mass index and TG/HDL-C were calculated. MS was defined according to ATP III criteria. We considered high LDL-C >130 mg/dL and high TG >150mg/dl. Results: mean age was 25±4.8 years, 60.2% were females. Prevalence of risk factors: obesity 6.6%, overweight 21.9%, abnormal glucose 0.4%, high LDL-C 12.8%, high TG 9.2%, low HDL-C 9.2%, hypertension 3.6%, high TG/HDL 5%, increased WC 6.6%, MS 2.5%, Conclusions: we found low prevalence off MS on this young student population

Infecciones del tracto urinario en pacientes con diabetes. Parte 1 / Urinary tract infections in patients with diabetes. Part 1

Las infecciones del tracto urinario (ITUs) son frecuentes en la práctica médica diaria. Existen factores patogénicos que modulan el riesgo de su aparición que dependen del germen responsable y el huésped. La diabetes mellitus es un factor predisponente para la aparición de infecciones urinarias. Como factores de riesgo para estas infecciones se mencionan la mayor duración de la diabetes, la albuminuria y neuropatía con menor vaciamiento vesical, siendo controversial la presencia de glucosuria. Según su ubicación en el árbol urinario pueden ser bajas y altas, y de acuerdo a la severidad, complicadas o no. La bacteriuria asintomática, detectada por análisis rutinario, es más frecuente en mujeres con diabetes. La elección del esquema antibiótico en las infecciones urinarias se basa en la severidad de la infección, el antecedente de microorganismos resistentes y la sensibilidad en el antibiograma, recordando ajustar la dosis de acuerdo al grado de insuficiencia renal. En este trabajo nuestro objetivo es describir las características clínicas y el diagnóstico para un adecuado tratamiento antibiótico

Urinary tract infections (UTIs) are frequent in daily medical practice. There are pathogenic factors that modulate the risk of their onset depending on the responsible germ and host. Diabetes mellitus is a predisposing factor for developing urinary infections. The longest duration of diabetes, albuminuria and neuropathy with less bladder emptying are mentioned as risk factors for these infections, being controversial the presence of glycosuria. Depending on their location in the urinary tract, infections can be lower and upper tract infections, and according to severity, complicated or not. Asymptomatic bacteriuria, detected by routine urinalysis, is more frequent in women with diabetes. The choice of the antibiotic scheme in urinary tract infections is based on the severity of the infection, history of resistant microorganisms and sensitivity in the antibiogram, adjusting the dose according to the degree of renal insufficiency. The aim of our work is to describe the clinical characteristics and diagnosis for an adequate antibiotic treatment

Manejo de la Hiperuricemia en Pacientes en Argentina. Una Encuesta Mediante Cuestionario / Hyperuricemia Management in Patients from Argentina. A Questionnaire Survey

Resumen Introducción: Durante muchos años el ácido úrico se ha considerado como un producto metabólico inerte del metabolismo de las purinas, sin embargo, ha sido recientemente asociado a una serie de estados de enfermedad crónica. No hay hallazgos concluyentes disponibles en la actualidad para tomar una conducta activa clara respecto al tratamiento de ácido úrico sérico, y cuál sería su objetivo terapéutico. Material y métodos: Debido a esta controversia, se decidió llevar a cabo una encuesta para evaluar cuáles son las decisiones que se toman en este contexto, en el ámbito médico de la Argentina. Se consultó en qué pacientes se evaluaba en forma rutinaria el ácido úrico sérico, resultando en un 53.2% de todos los pacientes, sin diferenciar patologías, y un 11.5% refirió que no lo realiza rutinariamente. Con respecto al tratamiento sólo refirieron tratarlo con enfermedad renal un 62.5%; con diabetes 61.7%; con síndrome metabólico 60.4%; con enfermedad cardiovascular un 50.3%; con gota, cálculos renales o dolor articular, un 91.3%, 74% y 36.1% respectivamente. Resultados: Los datos de la encuesta confirman la falta de evidencia en el criterio para la selección de pacientes, a los fines de evaluar los niveles de ácido úrico sérico y su tratamiento. Conclusiones: De esta forma, se concluye que prima la necesidad de realizar estudios prospectivos y randomizados de las patologías con alta incidencia de uricemia elevada, para poder determinar normativas que orienten una conducta a los especialistas según los resultados obtenidos, y que dicha decisión no esté basada solo en la opinión de los expertos.

Abstract Introduction: For many years, uric acid was considered to be an inert product of purine metabolism; however, it has recently been associated with a number of chronic diseases. Nowadays, there are no conclusive findings available regarding a clear action plan to treat serum uric acid or which specific therapeutic goals it would have. Methods: Given this controversy, a survey was conducted in order to evaluate which decisions are taken regarding this situation within the Argentinian medical community. The question was in which cases serum uric acid was routinely assessed and the result was 53.2% no matter the pathology; 11,5% of physicians did not assess it routinely. Regarding its treatment, 62.5% of them reported to have treated it as part of kidney disease; 61.7 % as part of diabetes; 60.4% as part of metabolic syndrome; 50.3% as part of cardiovascular disease; 91.3 % as part of gout; 74% as part of renal stones, and 36.1% as part of joint pain. Results: The data collected by means of the survey show a lack of evidence for establishing the patient selection criteria when evaluating levels of serum uric acid and its treatment. Conclusions: Therefore, it is concluded that it is necessary to conduct prospective and randomized studies of conditions with a high incidence of elevated uricemia in order to develop guidelines for specialists according to results; this decision should not be based on experts' opinion alone.

The coexistence of hypercalcemia and hypoglycemia in a patient with a renal tumor and B cell lymphoma

SUMMARY Paraneoplastic syndromes are a heterogeneous group of malignant diseases caused by events which involve endocrine, immune and metabolic aspects and whose symptoms vary according to the substance produced and the primary tumor. Hypercalcemia is a frequent complication in cancer patients. Prognosis of cancer patients with hypercalcemia is usually poor. A factor called parathyroid hormone related peptide, whose actions are similar to those of the parathyroid hormone, is thought to be the most common cause of malignancy associated hypercalcemia. Non-islet hypoglycemic cell tumor consists of a rare syndrome characterized by the presence of a solid tumor and severe fasting hypoglycemia determined by an insulin-independent pathway. We report a case of a 59-year-old-man with a renal tumor and a T-cell rich large B cell lymphoma who was hospitalized due to severe hypercalcemia and hypoglycemia. The laboratory examination reported hypercalcemia with inhibited PTH and hypoglycemia with inhibited insulin secretion, arriving to the conclusion of tumoral peptide production. He received denosumab and corticoid therapy. The patient died one month later despite initial improvement after medical treatment. While a single paraneoplastic manifestation may be expected in most tumors, the coexistence of two or more of them is rare, except in hepatocellular carcinomas, and it has not yet been described in renal tumors.

Alteraciones lipídicas en adolescentes de peso adecuado / Alterações lipídicas em adolescentes de peso adequado / Lipidic alterations in adolescents of adequate weight

Introducción. Las concentraciones de c-LDL (low-density lipoprotein cholesterol) y de c-HDL (high-density lipoprotein cholesterol) se utilizan generalmente para determinar el riesgo aterogénico. Los diferentes estudios, tanto en adultos como en niños, demuestran el valor pronóstico superior de la apolipoproteina B, colesterol no HDL e índices específicos de las lipoproteínas (triglicéridos/c-HDL, c-LDL/c-HDL, colesterol total/c-HDL). Objetivo. Determinar el perfil lipídico, las lipoproteínas y los perfiles de apolipoproteínas y su asociación con los indicadores antropométricos en la población joven. Materiales y métodos. Fueron evaluados 429 niñas y 514 varones, entre 11 y 14 años. Se determinaron las medidas antropométricas, la presión arterial, el índice de masa corporal (IMC) y la relación entre cintura y talla. Fueron analizados: glucemia, colesterol total, c-LDL, triglicéridos y apolipoproteína B. Se calcularon las relaciones entre triglicéridos y c-HDL y el colesterol no HDL. Resultados. Los varones tuvieron mayor peso, mayor IMC, mayor circunferencia de cintura, mayor presión arterial sistólica y diastólica, en comparación a las niñas. Observamos una correlación positiva entre la circunferencia de cintura y el IMC con el colesterol total y con distintos índices de lipoproteínas en varones; sin embargo, en las niñas únicamente la circunferencia de cintura se asoció con los índices de lipoproteínas. Solo el 70% de los adolescentes tuvieron un perfil lipídico dentro de los parámetros de normalidad, así como el c-LDL y los niveles de colesterol no HDL. El c-HDL se encontró disminuido en un 35% de los varones y en un 45% de las mujeres, anormalidad más frecuentemente hallada. Conclusiones. Demostramos que existe una alta prevalencia de niveles no deseables de lípidos y de lipoproteínas en adolescentes con peso adecuado. Este estudio enfatiza la necesidad de un reconocimiento y de una intervención precoz de la dislipemia en la población pediátrica para prevenir la enfermedad cardiovascular en la etapa adulta.

Lipidic alterations in adolescents of adequate weight Background. Serum concentration of low-density lipoprotein cholesterol (LDL-c) and high-density lipoprotein cholesterol (HDL-c) are usually used to determine atherogenic risk. Different studies in adults as well as in children have shown the superior prognostic value of apolipoprotein B, non HDL- cholesterol and specific ratios of lipoprotein variables, such as triglycerides/ HDL-c, LDL-c/ HDL-c and cholesterol/HDL-c. Aims. Determine lipid, lipoprotein and apolipoprotein profiles and its association with anthropometric indicators in a young population. Materials and methods. Four hundred twenty nine girls and 514 boys, between 11 and 14 years old were evaluated. Anthropometric measures, blood pressure, body mass index (BMI) and waist/height ratio were determined. Blood glucose, total cholesterol, LDL-c, triglycerides, apolipoprotein B were analyzed. Triglycerides/HDL-c ratio and non HDL-c were calculated. Results. Males had higher weight, BMI, waist circumference and blood pressure, both systolic and diastolic than girls. We observed positive correlations between waist circumference and BMI with total cholesterol and different lipoprotein ratios in males, however in female only waist circumference was associated with lipoprotein ratios. Only seventy percent of the adolescents presented normal lipid profile as well as LDL and non HDL-c levels. HDL-c was decreased in 35% of males and 45% of females, being the most frequent abnormality found. Conclusions. We showed a high prevalence of undesirable lipid and lipoprotein levels in normal weight adolescents. This study emphasizes the need for early recognition and intervention for hyperlipidemia in pediatric populations to prevent cardiovascular disease in adults.

Alterações lipídicas em adolescentes de peso adequado Introdução. As concentrações séricas de colesterol de lipoproteínas de baixa densidade (LDL-c) e colesterol de lipoproteínas de alta densidade (HDL-c) são geralmente utilizadas para determinar o risco aterogênico. Estudos diferentes tanto em adultos como em crianças mostraram o valor prognóstico superior da apolipoproteína B, colesterol não HDL e relações específicas de variáveis de lipoproteínas, tais como triglicerídeos/HDL-c, LDL-c/HDL-c e colesterol/HDL-c. Objetivos. Determine os perfis lipídicos, lipoproteicos e apolipoproteicos e sua associação com indicadores antropométricos em uma população jovem. Materiais e métodos. Foram avaliados 429 meninas e 514 meninos, entre 11 e 14 anos de idade. Foram determinadas medidas antropométricas, pressão sanguínea, índice de massa corporal (IMC) e relação cintura/altura. Foram analisados: glicemia, colesterol total, LDL-c, triglicerídeos, apolipoproteína B. Foram calculadas taxas de triglicerídeos/HDL-c e colesterol não HDL. Resultados. Os meninos tiveram maior peso, maior IMC, maior circunferência da cintura, maior pressão arterial sistólica e diastólica em comparação com as meninas. Observou-se uma correlação positiva entre a circunferência da cintura e o IMC com colesterol total e lipoproteínas com taxas diferentes em meninos; no entanto, só as meninas a circunferência da cintura foi associado com níveis de lipoproteínas. Apenas 70% dos adolescentes tiveram um perfil lipídico dentro dos parâmetros de normalidade e o LDL-c e os níveis de colesterol não HDL. O HDL-c diminuiu em 35% dos homens e 45% das mulheres, sendo a anormalidade mais freqüente encontrada. Conclusões. Mostramos uma alta prevalência de níveis indesejáveis de lipídios e lipoproteínas em adolescentes com peso normal. Este estudo enfatiza a necessidade de reconhecimento precoce e intervenção para hiperlipidemia em populações pediátricas para prevenir doenças cardiovasculares em adultos.

Diagnóstico de esteatosis hepática por métodos clínicos, bioquímicos y por imágenes / Diagnosis of hepatic steatosis using clinical, biochemical and imaging methods

La enfermedad hepática grasa no alcohólica comprende un espectro de afecciones hepáticas que va desde la simple esteatosis a la esteatohepatitis, fibrosis y hasta cirrosis. Su prevalencia aumenta con la edad, la obesidad y está fuertemente asociada con la presencia de síndrome metabólico y aumento de la mortalidad cardiovascular y por enfermedades malignas. Se produce por una acumulación de triglicéridos en los hepatocitos relacionada con insulinorresistencia hepática y muscular. Su presencia se asocia con aumento de transaminasa glutámico-oxaloacética o glutamico-pirúvica, aunque esta última puede no estar elevada en la enfermedad avanzada. Existen 5 índices utilizados para el diagnóstico de esteatosis hepática: SteatoTest, fatty liver index, NAFLD liver fat score, lipid acumulation product y hepatic steatosis index, mientras que para esteatohepatitis contamos con el NASH test, NASH diagnostics, NASH score y HAIR (Hypertention, increased ALT and IR o Insulin resistence). En estadios de fibrosis el índice transaminasa glutamicooxáloacetica-glutamicopiruvica aumenta, así como la ferritina en sangre y el valor del NAFLD fibrosis score, siendo de alta especificidad para el diagnóstico. La ecografía abdominal tiene una gran disponibilidad, pero su sensibilidad diagnóstica es menor cuando existen grados leves de infiltración grasa hepática. La tomografía computada tiene una especificidad del 100% cuando el contenido graso es mayor al 30% pero la radiación emitida no permite un uso frecuente. La resonancia magnética con espectroscopia constituye el método de elección para la detección y cuantificación de contenido de grasa hepática. La biopsia hepática es un método invasivo que permite una clasificación pronóstica adecuada de la enfermedad, pero por sus complicaciones solo debe realizarse en pacientes seleccionados: aquellos con riesgo elevado de esteatohepatitis o riesgo de fibrosis por laboratorio o clínica, o con otras enfermedades hepáticas coexistentes. La identificación temprana de enfermedad hepática grasa no alcohólica permite la implementación de medidas tempranas para disminuir la morbimortalidad asociada a esta condición.

Non-alcoholic fatty liver disease (NAFLD) includes a spectrum of liver diseases ranging from steatosis to steatohepatitis, fibrosis and cirrhosis. Its prevalence increases with age and with obesity, and is strongly associated with the presence of metabolic syndrome and increased cardiovascular and malignant diseases. It is caused by an accumulation of triglycerides in liver hepatocytes and muscles, and related to insulin resistance. Its presence is associated with the increase of alanine aminotransferase (alt), although it may not be elevated in advanced disease. There are 5 indexes used for the diagnosis of hepatic steatosis: SteatoTest, fatty liver index, NAFLD liver fat score, lipid accumulation product and hepatic steatosis index, whereas for esteatohepatitis the NASH test, NASH diagnostics, as well as the non-alcoholic steatohepatitis (NASH) score and HAIR (hypertension, ALT, and insulin resistance). In stages of fibrosis AST-ALT index increases as well as ferritin in blood and the NAFLD fibrosis score, which has a high specificity for diagnosis. Abdominal ultrasound is widely available, but its diagnostic sensitivity is lower when there are mild degrees of hepatic fatty infiltration. Computed tomography has a specificity of 100% when fat content is greater than 30%, but the radiation emitted prevents frequent use. Magnetic resonance spectroscopy is the method of choice for the detection and quantification of liver fat content. Liver biopsy is an invasive method that enables appropriate prognostic classification of the disease, but has some complications, and should only be performed in selected individuals: high risk of steatohepatitis or fibrosis risk of laboratory or clinical or other co-existing liver disease. Early identification of NAFLD allows early measures to be implemented in order to reduce morbidity and mortality associated with this condition.