Relevance of non-criteria antiphospholipid antibodies titers among patients with antiphospholipid syndrome and patients with systemic lupus erythematosus.

BACKGROUND: There is an increasing interest in the study of non-criteria antiphospholipid antibodies (aPL) including antibodies targeting domain 1 of the B2 glycoprotein 1 (anti-D1 B2GP1) and antibodies anti phosphatidylserine/ prothrombin (PS/PT). OBJECTIVES: Our aim was to analyze a panel of conventional and non-criteria aPL in a cohort of patients with systemic lupus erythematosus (SLE) and primary antiphospholipid syndrome (APS), to describe if there are differences in aPL titers among groups, to evaluate clinical associations including risk of recurrent events of novel aPL. METHODS: Observational study that evaluated at baseline antibodies against anti-D1 B2GP1 and anti PS/PT. Anti-D1 B2GP1 antibodies were tested using a chemiluminescent immunoassay. IgG and IgM anti PS/PT, aCL and anti B2GP1 by ELISA techniques. Therefore, patients were followed in order to identify new thrombotic events. RESULTS: 133 patients with SLE and 23 with primary APS patients were included. Main APS manifestations were DVT (27%), obstetric morbidity (22%) and arterial thrombosis (10.1%). IgM anti PS/PT antibodies levels were (20.6 - 127) vs 21.9 (11.2 - 39.2) U/ml, p<0.001 in primary APS vs SLE with APS, respectively. Anti-D1 B2GP1, IgG and IgM anti PS/PT were associated with thrombotic and non-thrombotic manifestations. During follow-up, IgG B2GP1 were related with a significant cumulative risk of thrombosis. CONCLUSIONS: We found significant differences in serum titers of non-criteria aPL among patients with primary APS vs SLE with APS. Whether non-criteria aPL antibodies titers are useful to differentiate patients with primary and secondary APS requires further analysis in other populations.

Importancia de los títulos de anticuerpos antifosfolípidos no criterio entre pacientes con síndrome antifosfolípido primario y pacientes con lupus eritematoso sistémico / Relevance of non-criteria antiphospholipid antibodies titers among patients with antiphospholipid syndrome and patients with systemic lupus erythematosus

Antecedentes: Hay un interés creciente en el estudio de los anticuerpos antifosfolípidos (aPL) no criterio, incluyendo anticuerpos contra el dominio 1 de la B2 glicoproteína 1 (anti-D1 B2GP1) y anticuerpos antifosfatidilserina/protrombina (PS/PT). Objetivos: Nuestro objetivo fue analizar un panel de aPL convencionales y no criterio en una cohorte de pacientes con lupus eritematoso sistémico (LES) y síndrome antifosfolípido primario (SAF), para describir si hay diferencias en los títulos de aPL entre los grupos, y evaluar asociaciones clínicas incluyendo el riesgo de eventos recurrentes con aPL novedosos. Metodología: Estudio observacional que evaluó los anticuerpos anti-D1 B2GP1 y anti-PS/PT de manera basal. Los anticuerpos anti-D1 B2GP1 se evaluaron a través de inmunoanálisis por quimioluminiscencia. Los anticuerpos anti-PS/PT, anticardiolipinas (aCL) y anti-B2GP1 fueron evaluados por técnicas de ELISA. Finalmente, los pacientes fueron seguidos en el tiempo para identificar nuevos eventos trombóticos. Resultados: Se incluyeron 133 pacientes con LES y 23 pacientes con SAF primario. Las principales manifestaciones de SAF fueron TVP (27%), morbilidad obstétrica (22%) y trombosis arterial (10,1%). Los títulos de anticuerpos anti-PS/PT IgM fueron 46,5 (20,6-127) vs. 21,9 (11,2-39,2) U/ml, p<0,001, en pacientes con SAF primario vs. LES con SAF secundario, respectivamente. Los anti-D1 B2GP1, anti-PS/PT IgG e IgM se asociaron con manifestaciones trombóticas y no trombóticas. Durante el seguimiento, los anticuerpos IgG B2GP1 se relacionaron con un riesgo acumulativo significativo de trombosis. Conclusiones: Se encontraron diferencias estadísticamente significativas en títulos séricos de aPL no criterio en pacientes con SAF primario vs. pacientes con LES y SAF secundario. Si los títulos de aPL no criterio son útiles para diferenciar entre SAF primario y SAF secundario, se requieren más análisis en otras poblaciones para poder confirmar si los títulos de aPL no criterio.

Background: There is an increasing interest in the study of non-criteria antiphospholipid antibodies (aPL) including antibodies targeting domain 1 of the B2 glycoprotein 1 (anti-D1 B2GP1) and antibodies anti phosphatidylserine/ prothrombin (PS/PT). Objectives: Our aim was to analyze a panel of conventional and non-criteria aPL in a cohort of patients with systemic lupus erythematosus (SLE) and primary antiphospholipid syndrome (APS), to describe if there are differences in aPL titers among groups, to evaluate clinical associations including risk of recurrent events of novel aPL. Methods: Observational study that evaluated at baseline antibodies against anti-D1 B2GP1 and anti PS/PT. Anti-D1 B2GP1 antibodies were tested using a chemiluminescent immunoassay. IgG and IgM anti PS/PT, aCL and anti B2GP1 by ELISA techniques. Therefore, patients were followed in order to identify new thrombotic events. Results: 133 patients with SLE and 23 with primary APS patients were included. Main APS manifestations were DVT (27%), obstetric morbidity (22%) and arterial thrombosis (10.1%). IgM anti PS/PT antibodies levels were (20.6 - 127) vs 21.9 (11.2 - 39.2) U/ml, p<0.001 in primary APS vs SLE with APS, respectively. Anti-D1 B2GP1, IgG and IgM anti PS/PT were associated with thrombotic and non-thrombotic manifestations. During follow-up, IgG B2GP1 were related with a significant cumulative risk of thrombosis. Conclusions: We found significant differences in serum titers of non-criteria aPL among patients with primary APS vs SLE with APS. Whether non-criteria aPL antibodies titers are useful to differentiate patients with primary and secondary APS requires further analysis in other populations.(AU)

Evaluation of Differences in Metabolic and Immunologic Markers and Cardiovascular Risk in HIV-1 Patients / Evaluación de la relación entre marcadores metabólicos, inmunológicos y de riesgo cardiovascular en pacientes con VIH-1 / Avaliação da relação entre marcadores metabólicos, imunológicos e de risco cardiovascular em pacientes com HIV-1

Introduction:hiv infection induces an exacerbated chronic inflammatory response, which triggers met-abolic disorders and cardiovascular diseases; however, there are individuals, known as hiv controllers, who do not have typical progression markers. As cardiovascular risk tests are not accurate on hiv-1 infected patients, the study of metabolic and inflammatory parameters in individuals with different patterns of progression could contribute to the definition of predictors of cardiovascular disease in this population. The aim of this study was to compare hiv controllers and hiv progressors (with and without antiretroviral therapy) as well as with healthy controls in order to explore differences and correlations in metabolic and inflammatory biomarkers associated with cardiovascular risk. Materials and methods:This was a cross-sectional analytical study which included 63 individuals infected with hiv-1 classified as hiv controllers or progressors (with or without antiretroviral therapy), and a healthy control group. The following parameters were determined: carotid intima-media thickness (cimt); cardiovascular risk scores; lipid profile, fasting glucose, high-sensitivity crp, D-dimer, sCD14, sCD163, il-6, and il-18. Data were compared with Anova or Kruskal­Wallis, and correlations were evaluated by the Spearman coef-ficient. Results: While there were no significant differences in Framingham, dad or cimt values, hiv con-trollers exhibited lower triglycerides levels when compared with hiv progressors. No differences were observed in markers, such as high-sensitivity crp, il-6, il-18, and sCD163, among the groups. The median hdl value was higher in hiv progressors on antiretroviral therapy, and cimt in hiv controllers was nega-tively correlated with sCD14. Conclusion:hiv controllers have a different cardiovascular profile than hivprogressors according to their values in metabolic and immunological biomarkers

Introducción: la infección por vih-1 induce una respuesta inflamatoria crónica exacerbada que desencadena alteraciones metabólicas y cardiovasculares; sin embargo, algunos individuos "controladores" no presentan los marcadores de progresión típicos. Dado que las pruebas que evaluan el riesgo cardiovascular carecen de precisión en pacientes con vih-1, el estudio de parámetros inflamatorios en individuos con diferente progresión podría aportar a la definición de predictores de enfermedad cardiovascular en esta población. El objetivo es explorar diferencias y correlaciones en biomarcadores metabólicos e inflamatorios asociados con riesgo cardiovascular, comparando individuos controladores y progresores con y sin terapia antiviral. Materiales y métodos: estudio analítico transversal con 63 individuos infectados por vih-1, clasificados en controladores y progresores (con terapia antiviral y sin esta), y controles sanos. Se midió el grosor de la íntima media carotidea (cimt), puntajes de riesgo cardiovascular y cuantificación de perfil lipídico, glucemia en ayunas, pcr ultrasensible, dímero D, sCD14, sCD163, il-6 e il-18. Se realizó comparación por Anova o Kruskal-Wallis y correlación por coeficiente de Spearman. Resultados: no hubo diferencias significativas en índices de Framingham, dad o cimt, pero los individuos controladores presen-taron menores valores de triglicéridos, comparados con los progresores. No se observaron diferencias en pcr ultrasensible, il-6, il-18, y sCD163, entre los grupos estudiados. La mediana del hdl fue mayor en los progresores con terapia antiviral y el cimt en los controladores se correlacionó negativamente con sCD14. Conclusión: los individuos controladores presentan un perfil cardiovascular diferente a los individuos progresores, de acuerdo con los biomarcadores metabólicos e inmunológicos evaluados

Introdução: a infecção pelo hiv-1 induz resposta inflamatória crônica exacerbada, que desencadeia alte-rações metabólicas e doenças cardiovasculares; no entanto, existem indivíduos, chamados controlado-res, que não possuem os marcadores de progressão típicos. Tendo em vista que os testes que avaliam o risco cardiovascular carecem de precisão em pacientes com hiv-1, o estudo de parâmetros metabólicos e inflamatórios em indivíduos com diferentes padrões de progressão pode contribuir para a definição de preditores de doença cardiovascular nessa população. O objetivo é explorar diferenças e correlações em biomarcadores metabólicos e inflamatórios associados ao risco cardiovascular, comparando indiví-duos controladores e progressores submetidos ou não à terapia antiviral. Materiais e métodos: Estudo analítico transversal que incluiu 63 indivíduos infectados pelo hiv-1, classificados como controladores e progressores (com e sem terapia antiviral), além de grupos controle saudáveis. Realizou-se a medição da espessura da íntima média da carótida (cimt), pontuações de risco cardiovascular; e quantificação do perfil lipídico, glicemia em jejum, pcr ultrassensível, dímero d, sCD14, sCD163, il-6 e il-18. A comparação foi feita por Anova ou teste de Kruskal-Wallis e a correlação pelo coeficiente de Spearman. Resultados.Embora não tenha havido diferenças significativas nos índices de Framingham, dad ou cimt, os indivíduos controladores apresentaram valores de triglicerídeos mais baixos, em comparação com os progressores. Não foram observadas diferenças em marcadores como pcr ultrassensível, il-6, il-18 e sCD163, entre os grupos estudados. O hdl médio foi maior em indivíduos progressores em terapia antiviral, e o cimtem indivíduos controladores foi negativamente correlacionado com o sCD14. Conclusão: os indivíduos controladores apresentam um perfil cardiovascular diferente dos indivíduos progressores, de acordo com os biomarcadores metabólicos e imunológicos avaliados

Epidemiología de los desórdenes venosos crónicos y factores asociados en amerindios nativos embera-chamí, Antioquia / Epidemiology of chronic venous disorders and associated factors in embera-chami native amerindians, Antioquia / Epidemiologia das doenças venosas crônicas e fatores associados em ameríndios nativos embera-chamí, Antioquia

Resumen Objetivo: Analizar la prevalencia de los desórdenes venosos crónicos (dvc) en los embera-chamí de Cristianía (Karmata Rua), en el suroeste de Antioquia, y conocer sus posibles factores asociados (fa). Metodología: Estudio de corte de una muestra aleatoria de 488 sujetos. El diagnóstico se realizó mediante ecoduplex venoso. Se recolectó información sobre fa sociodemográficos, comportamentales y antropométricos. Los fa más relevantes se seleccionaron por regresión logística binaria múltiple. Resultados: La prevalencia de várices fue del 27,5 % y la de insuficiencia venosa crónica (ivc) del 0,8 %. Hubo compromiso de segmentos anatómicos superficiales en el 34,8 % de los individuos. La edad fue el fa más importante, con Odds Ratio (or) entre 3,33 y 6,30 según el tipo de dvc (excepto C1). El sexo femenino, la paridad, la grasa en el muslo y pierna y la talla alta se asociaron a telangiectasias. La edad, la grasa abdominal y la forma de la pierna fueron fa de várices. A las venas superficiales, en ambos sexos, se asociaron la edad y la grasa abdominal y, en mujeres, también los antecedentes familiares de várices. A las profundas y perforantes se asociaron la edad y la depleción de grasa periférica. Conclusiones: El patrón de baja prevalencia de los dvc en embera-chamí puede ser consecuencia de los estilos de vida relacionados con la actividad física diaria y las diferencias genéticas compartidas con amerindios. En los programas de atención en salud diferencial deberían considerarse los desórdenes profundos y perforantes respecto a mestizos.

Abstract Objective: To analyze the prevalence of chronic venous disorders (CVD) in the embera-chamí from Cristianía (Karmata Rua), in the southwest of Antioquia, and to study possible associated factors (AF). Methodology: A cross sectional study of a random sample of 488 subjects. The diagnosis was performed through Doppler ultrasonography. Information about sociodemographic, behavioral and anthropometric AFs was collected. The most relevant AFs were selected through multiple binary logistic regression. Results: The prevalence of varicose veins was 27.5% and that of chronic venous insufficiency (cvi) was 0.8%. Superficial anatomical segments were compromised in 34.8% of individuals. Age was the most important AF, with an Odds Ratio (OR) between 3.33 and 6.30 according to the type of cvd. Being a female, parity, fat in the thigh/leg and large size were associated with telangiectasias. Age, abdominal fat and leg shape were AF of varicose veins. Superficial veins in both sexes were associated with age and abdominal fat and in women, also with a family background of varicose veins. Deep and perforator veins were associated with age and peripheral fat depletion. Conclusions: The low prevalence pattern of CVDs in embera-chamí may be a consequence of lifestyles involving daily physical activity and genetic differences shared with Amerindians. Deep and perforating disorders should be considered in differential health care programs in relation to mestizos.

Resumo Objetivo: Analisar a prevalência de doenças venosas crônicas (dvc) na Embera-Chami Christiania (KarmataRua), no sudoeste do estado de Antioquia, e conhecer seus fatores associados (AF). Metodologia: Um estudo de coorte de uma amostra aleatória de 488 indivíduos. O diagnóstico foi feito por ecoduplex venoso. Informações sobre FA sócio demográficas, comportamentais e antropométricas foram coletadas. Os FAs mais relevantes foram selecionados para múltipla regressão logística binária. Resultados: A prevalência de varizes foi de 27,5% e a de insuficiência venosa crônica (ivc) foi de 0,8%. Houve comprometimento dos segmentos anatômicos superficiais em 34,8% dos indivíduos. A idade foi a FA mais importante, com Odds Ratio (OR) entre 3,33 e 6,30 de acordo com o tipo de dvc. Sexo feminino, paridade, gordura na coxa e perna e altura foram associados a telangiectasias. Idade, gordura abdominal e formato de perna foram FA de varizes. Nas veias superficiais, em ambos os sexos, idade e gordura abdominal estavam associadas e, nas mulheres, também a história familiar de varizes. Às profundas e perfurantes foram associadas a idade e depleção de gordura periférica. Conclusões: O padrão de baixa prevalência de DVC em embera-chamí pode ser uma consequência de estilos de vida relacionados à atividade física diária e diferenças genéticas compartilhadas com ameríndios. Em programas diferenciais de atenção à saúde, distúrbios profundos e perfurantes devem ser considerados em relação aos mestiços.

Insulin resistance and ß-cell function in Colombian mestizo and Embera-Chamí populations and their relation with adiposity degree.

BACKGROUND AND OBJECTIVE: Insulin resistance (IR) is a condition favored by metabolic and endocrine changes experienced by adipose tissue in the context of obesity. The prevalence and the presentation of both IR and obesity vary among the populations, and may be affected by ancestral genetic composition among other factors. The aim of this study was to compare the presence of IR and obesity in Amerindians of the Embera-Chamí ethnicity and Colombian mestizo population. PATIENTS AND METHODS: A sample of 630 individuals, 471 mestizos and 159 Amerindians of the Embera-Chamí ethnicity, from the general population of Colombia were studied. For each participant, anthropometric and biochemical measurements, as well as blood pressure and the Homeostatic Model Assessment (HOMA) of IR and ß-cell function (%B) were recorded. These values were compared between the two populations. RESULTS: While prevalence of central obesity was similar in both populations (48.7% and 42.6% in the mestizo and Embera groups respectively; p=0.148), body mass index (BMI) values suggested a higher prevalence of overweight in the Embera than in mestizo population (43.4% Embera, 31.8% mestizo; p=0.027). Despite the similarities in the prevalence of HOMA-IR and HOMA-%B status between both populations, the Embera population had a significantly greater pancreatic ß-cell function, higher insulin levels, and better glucose control, across BMI and central obesity categories, than the mestizo population. CONCLUSION: There are differences in aspects related to energy metabolism between the samples of the mestizo and Amerindian populations analyzed.

Insulin resistance and Beta-cell function in Colombian mestizo and Embera-Chamí populations and their relation with adiposity degree

Background and objective: Insulin resistance (IR) is a condition favored by metabolic and endocrine changes experienced by adipose tissue in the context of obesity. The prevalence and the presentation of both IR and obesity vary among the populations, and may be affected by ancestral genetic composition among other factors. The aim of this study was to compare the presence of IR and obesity in Amerindians of the Embera-Chamí ethnicity and Colombian mestizo population. Patients and methods: A sample of 630 individuals, 471 mestizos and 159 Amerindians of the Embera-Chamí ethnicity, from the general population of Colombia were studied. For each participant, anthropometric and biochemical measurements, as well as blood pressure and the Homeostatic Model Assessment (HOMA) of IR and β-cell function (%B) were recorded. These values were compared between the two populations. Results: While prevalence of central obesity was similar in both populations (48.7% and 42.6% in the mestizo and Embera groups respectively; p=0.148), body mass index (BMI) values suggested a higher prevalence of overweight in the Embera than in mestizo population (43.4% Embera, 31.8% mestizo; p=0.027). Despite the similarities in the prevalence of HOMA-IR and HOMA-%B status between both populations, the Embera population had a significantly greater pancreatic β-cell function, higher insulin levels, and better glucose control, across BMI and central obesity categories, than the mestizo population. Conclusion: There are differences in aspects related to energy metabolism between the samples of the mestizo and Amerindian populations analyzed (AU)

Antecedentes y objetivo: La resistencia a la insulina (RI) es una condición favorecida por las alteraciones metabólicas y endocrinológicas experimentadas por el tejido adiposo en el contexto de obesidad. Tanto la prevalencia como la presentación de RI y obesidad varían entre las poblaciones y puede ser afectada, entre otros factores, por la composición genética ancestral. El objetivo de este estudio fue comparar la presentación tanto de RI como de obesidad entre amerindios de la etnia embera-chamí y población mestiza colombiana. Pacientes y métodos: Se estudió una muestra de 630 individuos de la población general mestiza colombiana (471 individuos) y de amerindios de la etnia embera-chamí (159 individuos). Para todos los participantes se registraron tanto medidas antropométricas, bioquímicas así como de presión arterial y el índice homeostatic model assessment (HOMA) para la RI y función de la célula β, valores que fueron comparados entre las poblaciones. Resultados: Mientras que ambas poblaciones mostraron una prevalencia de obesidad central similar (48,7% en mestizos, 42,6% en embera; p=0,148), los embera presentaron mayor exceso de peso de acuerdo al índice de masa corporal que los mestizos (43,4% en embera, 31,8% en mestizos; p=0,027). A pesar de las similitudes en la prevalencia de HOMA2-RI y HOMA2- %B entre ambas poblaciones, los embera presentan una función significativamente mayor de las células β del páncreas, niveles de insulina comparativamente mayores y un mejor control glucémico que los mestizos. Conclusión: Existen diferencias en aspectos del metabolismo energético entre las muestras de población mestiza y amerindia analizadas (AU)

Prevalencia de factores de riesgo cardiovascular en indígenas embera-chamí de Cristianía (Jardín), Antioquia / Prevalence of cardiovascular risk factors in the embera-chami indigenous population of Cristianía (Jardín) Antioquia, Colombia / Prevalência de fatores de risco cardiovascular em indígenas embera-chamí de Cristianía (Jardim), Antioquia

Estudiamos la prevalencia de los factores de riesgo cardiovascular en 488 individuos mayores de 14 años, en el resguardo indígena Karmata Rúa de Cristianía. Se encontraron las siguientes frecuencias: hipertensión arterial (HTA) 18,1%; antecedente personal de diabetes mellitus 3,3%; glucemia mayor de 126 mg/dL 0,7%; hábito de fumar 15%; sobrepeso 40,2%; obesidad 8,0%; hipercolesterolemia 21,4%; hipertrigliceridemia 33,3% y dislipidemia 56,2%. El índice de masa corporal y los valores de colesterol total, glucemia, perímetro de la cintura, índice cintura/ cadera y presión arterial sistólica y diastólica presentaron correlación positiva y significativa con la edad. El grado de escolaridad mostró correlación negativa con el perímetro de la cintura, el índice cintura/cadera, la glucemia y la presión arterial. Al comparar con poblaciones indígenas y no indígenas de Colombia y de otros países, se encontró una prevalencia entre tres y cuatro veces menor de diabetes mellitus; en la población estudiada hay menos HTA aunque existe tendencia al sobrepeso. No se encontraron diferencias significativas en otros factores de riesgo; todos ellos fueron más frecuentes en mujeres, en personas de escolaridad baja y en individuos mayores. Los factores que contribuyen a estas diferencias son genéticos (homogeneidad étnica) y ambientales, como la mayor actividad física de los hombres, la dieta y la estructura demográfica.

Prevalence of cardiovascular risk factors was studied in 488 individuals over the age of 14 years in the Karmata Rua indigenous population of Cristianía, Colombia. The following rates were found: arterial hypertension 18.1%, family history of diabetes mellitus 3.3%, serum glucose over 126 mg/dL 0.7%, smoking habit 15%, overweight 40.2%, obesity 8.0%, hypercholesterolemia 21.4%, hypertriglyceridemia 33.3% and dyslipidemia 56.2%. Values of body mass index, total cholesterol, glucose, waist circumference, waist/hip index, systolic and diastolic blood pressure showed a positive and significant correlation with age. Higher level of education showed negative correlation with waist circumference, the waist/hip index, blood sugar and blood pressure. In comparison with other indigenous and non-indigenous communities of Colombia and other countries, prevalence of diabetes mellitus was between three and four times lower in the studied population; prevalence or high blood pressure was also lower despite a tendency to overweight. For other risk factors no significant differences were found, but they were more common in women, in people with low level of schooling and in elder individuals. Probably this difference is caused by genetic and environmental factors, such as increased physical activity in men, diet, and population structure.

Estudamos a prevalência dos fatores de risco cardiovascular em 488 indivíduos maiores de 14 anos, no resguardo indígena Karmata Rúa de Cristianía. Encontraram- se as seguintes frequências: hipertensão arterial (HTA) 18,1%; antecedente pessoal de diabete mellitus 3,3%; glicemia maior de 126 mg/DL 0,7%; hábito de fumar 15%; sobrepeso 40,2%; obesidade 8,0%; hipercolesterolemia 21,4%; hipertrigliceridemia 33,3% e dislipidemia 56,2%. O índice de massa corporal e os valores de colesterol total, glicemia, perímetro da cintura, índice cintura/quadril e pressão arterial sistólica e diastólica apresentaram correlação positiva e significativa com a idade. O grau de escolaridade mostrou correlação negativa com o perímetro da cintura, o índice cintura/quadril, a glicemia e a pressão arterial. Ao comparar com populações indígenas e não indígenas da Colômbia e de outros países, encontrou-se uma prevalência entre três e quatro vezes menor de diabetes mellitus; na população estudada há menos HTA ainda que existe tendência ao sobrepeso. Não se encontraram diferenças significativas em outros FR; todos eles foram mais frequentes em mulheres, em pessoas de escolaridade baixa e em indivíduos maiores. Os fatores que contribuem a estas diferenças são genéticos (homogeneidade étnica) e ambientais, como a maior atividade física dos homens, a dieta e a estrutura demográfica.