Clinical characterization and detection of subclinical atherosclerosis in subjects with extreme hyperalphalipoproteinemia. / Caracterización clínica y detección de arteriosclerosis subclínica en sujetos con hiperalfalipoproteinemia extrema.

INTRODUCTION AND OBJECTIVES: The association between HDL cholesterol (HDL-C) levels and death from cardiovascular disease follows a U-shaped pattern, increasing at the extremes. The objective of the study was to characterize a sample of subjects with extreme hyperalphalipoproteinemia (HAE). MATERIAL AND METHODS: 53 cases with HAE were recruited, 24 women (HDL-C>135mg/ dL) and 29 men (HDL-C>116mg/ dL). A detailed medical history was taken and questionnaires on adherence to the Mediterranean diet and physical activity were collected. Carotid ultrasounds were performed to detect the presence of suclinical atherosclerosis. RESULTS: The most prevalent cardiovascular risk factor (CVRF) was dyslipidemia (64%) with no significant differences between men and women, unlike hypertension (21% in women, versus 55% in men, p=0.01) and others CVRF, for example, diabetes. 7% of the series had previous cardiovascular disease, women had higher LDL cholesterol (p=0.002) and HDL-C than men (without significant differences). Plaque was detected in 53% of cases, being more prevalent in men. Patients with plaque were older, drank more alcohol and smoked more (p<0.05). CONCLUSIONS: Men had a higher prevalence of CVRF than women, except for dyslipidemia. Subclinical atherosclerosis occurred in more than half of the series. Age, alcohol consumption and smoking were independently associated with the presence of plaque, however, our data do not show a significant influence of HDL-C levels.

Nuevo índice aterogénico para la predicción de aterosclerosis carotídea basado en la ratio proteína C reactiva no ultrasensible/HDL / New atherogenic index for the prediction of carotid atherosclerosis based on the non-ultrasensitive c-reactive protein/HDL ratio

Introducción La valoración del riesgo cardiovascular aparece en las guías clínicas como medida de prevención de enfermedades cardiovasculares, cuya etiología fundamental es la arteriosclerosis. Una de las herramientas que se utiliza para estimar el riesgo en práctica clínica son los índices aterogénicos (IA), cocientes entre fracciones lipídicas con rangos de referencia bien establecidos. A pesar de su uso extendido, existe todavía información limitada sobre su utilidad clínica. En los últimos años, algunas investigaciones han reforzado el papel de la inflamación en la etiología y cronicidad del proceso aterosclerótico. La inclusión de parámetros inflamatorios en el cálculo de IA podría mejorar su rendimiento diagnóstico en la detección de arteriosclerosis. Nos propusimos evaluar un nuevo IA en forma de ratio entre los valores de proteína C reactiva (PCR) no ultrasensible y las cifras de colesterol unido a lipoproteínas de alta densidad (HDL). Métodos Se incluyeron en el estudio 282 pacientes, asintomáticos, y sin historia de enfermedad cardiovascular. Se realizó en todos ellos analítica con perfil lipídico y PCR, y en el plazo inferior a un mes, ecografía carotídea para evaluar la presencia de ateromatosis. El nuevo IA se estableció como el cociente entre el valor de PCR no ultrasensible en mg/dL (multiplicado por 100) y el valor de HDL en mg/dL. Se comparó con los índices de Castelli I y II, y el índice aterogénico del plasma. La curva ROC determinó que el punto de corte óptimo del nuevo IA fue valor=1, con un área bajo la curva de 0,678 (IC 95% 0,60-0,75; p<0,001). ResultadosLa edad media de la muestra fue 60,4±14,5 años. Un total de 118 pacientes (41,8% del total) tenían arteriosclerosis carotídea. Al evaluar el rendimiento diagnóstico de los IA, encontramos que la ratio PCR·100/HDL mostró los valores más elevados de sensibilidad y valor predictivo positivo (0,73 y 0,68, respectivamente) ... Conclusiones... (AU)

Introduction Current guidelines recommend cardiovascular risk assessment as a preventive measure for cardiovascular diseases, whose fundamental etiology is arteriosclerosis. One of the tools used to estimate risk in clinical practice are atherogenic indices (AI), ratios between lipid fractions with well-established reference ranges. Despite its widespread use, there is still limited information on its clinical utility. In recent years, some research has reinforced the role of inflammation in the etiology and chronicity of the atherosclerotic process. The inclusion of inflammatory parameters in the AI calculation could improve its diagnostic performance in the detection of arteriosclerosis. We sought to evaluate a new AI as a ratio between C-reactive protein (CRP) values and high-density lipoprotein cholesterol (HDL) values. Methods A total of 282 asymptomatic patients with no history of cardiovascular disease were included in the study. Laboratory tests with lipid profile and CRP, and carotid ultrasound to assess the presence of atheromatosis were performed in all of them. The new AI is established as the ratio between non-ultrasensitive CRP value in mg/dL (multiplied by 100) and HDL value in mg/dL. It was compared with the Castelli I and II indices, and the plasma atherogenic index. The optimal cut-off point of the new AI was value=1 as determined by ROC curve, with an area under the curve of 0.678 (95% CI 0.60-0.75; p<0.001).Results Mean age of patients was 60.4±14.5 years. A total of 118 patients (41.8% of total) had carotid arteriosclerosis. When evaluating the diagnostic performance of different AIs, we found that CRP·100/HDL ratio showed the highest values of sensitivity and positive predictive value (0.73 and 0.68, respectively) compared to the Castelli I and II indices, and the plasma atherogenic index. ... Conclusions ... (AU)

New atherogenic index for the prediction of carotid atherosclerosis based on the non-ultrasensitive c-reactive protein/HDL ratio. / Nuevo índice aterogénico para la predicción de aterosclerosis carotídea basado en la ratio proteína C reactiva no ultrasensible/HDL.

INTRODUCTION: Current guidelines recommend cardiovascular risk assessment as a preventive measure for cardiovascular diseases, whose fundamental etiology is arteriosclerosis. One of the tools used to estimate risk in clinical practice are atherogenic indices (AI), ratios between lipid fractions with well-established reference ranges. Despite its widespread use, there is still limited information on its clinical utility. In recent years, some research has reinforced the role of inflammation in the etiology and chronicity of the atherosclerotic process. The inclusion of inflammatory parameters in the AI calculation could improve its diagnostic performance in the detection of arteriosclerosis. We sought to evaluate a new AI as a ratio between C-reactive protein (CRP) values and high-density lipoprotein cholesterol (HDL) values. METHODS: A total of 282 asymptomatic patients with no history of cardiovascular disease were included in the study. Laboratory tests with lipid profile and CRP, and carotid ultrasound to assess the presence of atheromatosis were performed in all of them. The new AI is established as the ratio between non-ultrasensitive CRP value in mg/dL (multiplied by 100) and HDL value in mg/dL. It was compared with the Castelli I and II indices, and the plasma atherogenic index. The optimal cut-off point of the new AI was value=1 as determined by ROC curve, with an area under the curve of 0.678 (95% CI 0.60-0.75; p<0.001). RESULTS: Mean age of patients was 60.4±14.5 years. A total of 118 patients (41.8% of total) had carotid arteriosclerosis. When evaluating the diagnostic performance of different AIs, we found that CRP·100/HDL ratio showed the highest values of sensitivity and positive predictive value (0.73 and 0.68, respectively) compared to the Castelli I and II indices, and the plasma atherogenic index. It was also the only predictor of carotid atheromatosis both when considering its values quantitatively (with OR 1.4 [95% CI 1.1-1.7]; p=0.005), and qualitatively (with OR 2.9 [95% CI 1.5-5.5]; p<0.001) in patients with a CRP·100/HDL ratio>1. CONCLUSIONS: The new PCR·100/HDL index showed the best diagnostic performance in the detection of carotid atheromatosis compared to other classic AIs in this Spanish population of asymptomatic patients.

The rs4783961 and rs708272 genetic variants of the CETP gene are associated with coronary artery disease, but not with restenosis after coronary stenting / Los polimorfismos rs4783961 y rs708272 del gen CETP son asociados con la enfermedad arterial coronaria y no con la restenosis tras el implante de un stent coronario

Abstract Objective: We evaluated whether cholesteryl ester transfer protein (CETP) gene polymorphisms are associated with the presence of coronary artery disease (CAD) and/or restenosis in patients with coronary stent. Methods: Two polymorphisms of the CETP gene [−971 A/G (rs4783961), and Taq1B A/G (rs708272)] were genotyped by 5'exonuclease TaqMan assays in 219 patients with CAD (66 patients with restenosis and 153 without restenosis) and 607 control individuals. Results: The distribution of polymorphisms was similar in patients with and without restenosis. However, when the whole group of patients (with and without restenosis) was compared to healthy controls, under dominant model, the G allele of the Taq1B A/G polymorphism was associated with increased risk of CAD (odds ratio [OR] = 1.48, pCDom = 0.032). In the same way, under codominant, dominant, and additive models, the A allele of the −971 A/G polymorphisms was associated with an increased risk of developing CAD (OR = 2.03, pCCo-dom = 0.022, OR = 1.83, pCDom = 0.008, and OR = 1.39, pCAdd = 0.011, respectively). In addition, the linkage disequilibrium showed that the "AG" haplotype was associated with increased risk of developing CAD (OR = 1.28, p = 0.03). Conclusion: This study demonstrates that CETP Taq1B A/G and CETP −971 A/G polymorphisms are associated with an increased risk of developing CAD, but no association with restenosis was observed.

Resumen Objetivo: Evaluamos si los polimorfismos del gen CETP están asociados con la presencia de enfermedad arterial coronaria (EAC) y/o restenosis en pacientes con stent coronario. Métodos: En este estudio se genotiparon dos polimorfismos del gen CETP [−971 A/G (rs4783961) y Taq1B A/G (rs708272)] mediante ensayos de 5'exonucleasa TaqMan en 219 pacientes con EAC (66 pacientes con restenosis y 153 sin restenosis), y 607 individuos de control. Resultados: La distribución de polimorfismos fue similar en pacientes con y sin restenosis. Sin embargo, cuando se comparó todo el grupo de pacientes (con y sin restenosis) con controles sanos, bajo el modelo dominante el alelo G del polimorfismo Taq1B A/G se asocia con un mayor riesgo de EAC (OR = 1.48, pCDom = 0.032). De la misma manera, bajo los modelos co-dominante, dominante y aditivo, el alelo A de los polimorfismos −971 A/G se asocia con un mayor riesgo de desarrollar EAC (OR = 2.03, pCCo-dom = 0.022, OR = 1.83, pCDom = 0,008 y OR = 1.39, pCAdd = 0.011, respectivamente). Adicionalmente, el desequilibrio de ligamiento mostró que el haplotipo "AG" se asocia con un mayor riesgo de desarrollar EAC (OR = 1.28, p = 0.03). Conclusión: En resumen, este estudio demuestra que los polimorfismos CETP Taq1B A/G y CETP −971 A/G están asociados con un mayor riesgo de desarrollar CAD, pero no se observó asociación con restenosis.

Medium/long term evaluation of lipid profile after bariatric surgery (gastric bypass versus sleeve gastrectomy).

INTRODUCTION: Bariatric surgery aims to reduce weight and resolve the comorbidities associated with obesity. Few studies have assessed mid/long-term changes in lipid profile with sleeve gastrectomy versus gastric bypass. This study was conducted to assess and compare changes in lipid profile with each procedure after 60 months. METHODS: This was an observational, retrospective study of analytical cohorts enrolling 100 patients distributed into two groups: 50 had undergone gastric bypass (GBP) surgery and 50 sleeve gastrectomy (SG) surgery. Total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and triglyceride (TG) levels were measured before surgery and at 1, 6, 12, 24, 36, 48, and 60 months. Weight loss and the resolution of dyslipidemia with each of the procedures were also assessed. RESULTS: Ninety-five of the 100 patients completed follow-up. At 60 months, TC and LDL levels had significantly decreased in the BPG group (167.42 ±â€¯31.22 mg/dl and 88.06 ±â€¯31.37 mg/dl, respectively), while there were no differences in the SG group. Increased HDL levels were seen with both procedures (BPG: 62.69 ±â€¯16.3 mg/dl vs. SG: 60.64 ±â€¯18.73 mg/dl), with no difference between the procedures. TG levels decreased in both groups (BPG: 86.06 ±â€¯56.57 mg/dl vs. SG: 111.09 ±â€¯53.08 mg/dl), but values were higher in the BPG group (P < .05). The percentage of overweight lost (PSP) was higher in the BPG group: 75.65 ±â€¯22.98 mg/dl vs. the GV group: 57.83 ±â€¯27.95 mg/dl. CONCLUSION: Gastric bypass achieved better mid/long-term results in terms of weight reduction and the resolution of hypercholesterolemia as compared to sleeve gastrectomy. While gastric bypass improved all lipid profile parameters, sleeve gastrectomy only improved HDL and triglyceride levels.

Prevalencia de dislipidemias en pacientes obesos / Dylispidemia prevalence in obese patients

Introducción: Las dislipidemias asociadas a la obesidad constituyen factores de riesgo de varias enfermedades especialmente del sistema cardiovascular. Objetivo: Determinar la prevalencia de dislipidemias en pacientes obesos. Métodos: Se realizó un estudio correlacional, retrospectivo y transversal de150 pacientes obesos, quienes acudieron a la consulta externa de la Clínica Medina del Hospital Básico de Guayaquil, desde el 2018 hasta el 2019. Las variables analizadas fueron edad, sexo, índice de masa corporal y resultados de laboratorio, tales como colesterol total, triglicéridos, colesterol LDL y dislipidemia mixta (colesterol HDL y VLDL). Resultados: En la serie predominaron el sexo masculino (62,6%), los pacientes con más de 65 años de edad (42,0 %), los niveles entre rango crítico y alto riesgo (66 pacientes); 16,0 % se clasificaron de alto riesgo con niveles de colesterol superior a 240 mg/dL. Mostraron resultados anormales en cuanto a los triglicéridos 62 afectados, en un rango mayor de 150 con niveles y limítrofe altos. Conclusiones: Se observó una correspondencia entre las dislipidemias y la obesidad, pues todos los pacientes presentaron algún tipo de alteración en los lípidos.

Introduction: Dyslipidemias associated to obesity constitute risk factors of several diseases specially from the cardiovascular system. Objective: To determine the prevalence of dyslipidemias in obese patients Methods: A correlational restrospective and cross-sectional study of 150 obese patients, who visited the outpatients department of Medina Clinic from Hospital Básico in Guayaquil, from 2018 to 2019. Variables used were age, sex, body mass index and laboratory results such as total cholesterol, triglycerids. LDL colesterol and mixed dyslipidemias (cholesterol HDL and VLDL). Results: In the serie, male sex (62.6 %), patients over 65 years (42.0 %), levels between critical and high risk (66 patients) prevailed, 16.0 % were classified as high risk patients with cholesterol level over 240 mg/dL. Sixty two patients showed subnormal results regarding triglycerids, in a rank higher than 150 with high limits and levels. Conclusions: A correspondance between dyslipidemias and obesity was observed, as all patients presented some type of change in lipids.

Triglycerides, HDL cholesterol and atherogenic dyslipidaemia in the 2019 European guidelines for the management of dyslipidaemias. / Triglicéridos, colesterol HDL y dislipidemia aterogénica en la guía europea para el control de las dislipidemias 2019.

In general, both European and American clinical guidelines have addressed the management of atherogenic dyslipidaemia in an unconvincing and even superficial way, largely because of the available therapeutic limitations. Consequently, this type of dyslipidaemia is underdiagnosed, under-treated, and under-controlled. Given the recent presentation of the 2019 guidelines of the European Atherosclerosis Society and the European Society of Cardiology on the management of dyslipidaemias, it seems appropriate to examine its position with respect to atherogenic dyslipidaemia and/or its main components, the increase in triglyceride-rich lipoproteins, and the decrease of high-density lipoprotein cholesterol.

Adherence to Southern European Atlantic Diet and physical fitness on the atherogenic index of plasma in adolescents / Adesão à Dieta Atlântica do Sul da Europa e aptidão física ao índice aterogênico do plasma em adolescentes / Adherencia a la Dieta Atlántica del Sur de Europa y condiciones físicas en el índice aterogénico de plasma en adolescentes

Abstract: We sought (i) to evaluate the associations of cardiorespiratory fitness (CRF), muscular fitness (MF) and Southern European Atlantic Diet (SEADiet) with atherogenic index of plasma (AIP) and (ii) to investigate de combined association of MF, CRF and SEADiet on AIP in adolescents. A cross-sectional school-based study was conducted on 493 adolescents (285 girls and 208 boys) aged 15-18 years, from the Portuguese Azorean Archipelago. CRF was measured by shuttle run test and MF by curl up and push up tests. Adherence to SEADiet was assessed with a semi-quantitative food frequency questionnaire (FFQ). The AIP was estimated as log (TG/HDL-C). Measures of pubertal stage and socioeconomic status were assessed. Linear regression showed a significant inverse association between MF (standardized β = -0.165; p < 0.001), CRF (standardized β = -0.081; p < 0.030) and SEADiet (standardized β = -0.081; p < 0.045) with AIP, after adjustments for age, sex, pubertal stage and parental education. Furthermore, participants classified with an optimal as well as those with low adherence to a SEADiet but with LowMF/LowCRF had on average the highest AIP (F(7.482) = 3.270; p = 0.002). Moreover, optimal SEADiet with HighMF/HighCRF group showed the lowest AIP when compared with those with low adherence to a SEADiet with HighMF/HighCRF group (p = 0.03). AIP is inversely associated with MF, CRF and SEADiet. The low MF combined with a low CRF levels seems to overcome the potential healthy effect of having an optimal adherence to the SEADiet on AIP. However, an optimal adherence to SEADiet seems to improve the AIP in those adolescents with high fitness levels.

Resumo: O estudo teve como objetivos: (i) avaliar as associações entre a aptidão cardiorrespiratória (ACR), aptidão muscular (AM) e Dieta Atlântica do Sul da Europa (SEADiet) e o índice aterogênico do plasma (IAP) e (ii) investigar a associação combinada entre AM, ACR e SEADiet e IAP em adolescentes. Foi realizado um estudo transversal de base escolar em uma amostra de 493 adolescentes (285 do sexo feminino), entre 15 e 18 anos de idade, nos Arquipélago dos Açores, Portugal. A ACR foi medida pelo teste aeróbico de corrida de vai-e-vem e a AM pelos testes de abdominal modificado e de flexão. A adesão ao SEADiet foi avaliada através de um questionário semi-quantitativo de frequência alimentar. O IAP foi calculado como log(TG/HDL-C). Foram avaliadas as medidas de estágio de puberdade e de nível socioeconômico. A regressão linear revelou uma associação inversa significativa entre AM (β padronizado = -0,165; p < 0,001), ACR (β padronizado = -0,081; p < 0,030) e SEADiet (β padronizado = -0,081; p < 0,045) e IAP, depois de ajustar para idade, sexo, estágio de puberdade e escolaridade dos pais. Além disso, os participantes classificados como adesão excelente ou baixa ao padrão alimentar SEADiet mas com BaixaAM/BaixaACR, tiveram, em média, os maiores níveis de IAP (F(7,482) = 3,270; p = 0,002). O grupo com adesão excelente ao SEADiet e AltaAM/AltaACR mostrou IAP mais baixo, comparado com o grupo com baixa adesão ao padrão alimentar SEADiet e AltaAM/AltaACR (p = 0,03). O IAP está associado inversamente com AM, ACR e SEADiet. Os níveis baixos de AM e ACR parecem contrabalançar o efeito saudável potencial da adesão excelente ao padrão alimentar SEADiet sobre o IAP. Entretanto, a adesão excelente ao SEADiet parece melhorar o IAP nos adolescentes com níveis altos de aptidão física.

Resumen: Nuestro objetivo (i) fue evaluar las asociaciones de las condiciones cardiorrespiratorias (CRF), musculares (MF) y de la Dieta Atlántica del Sur de Europa (SEADiet), con el índice aterogénico de plasma (AIP), así como (ii) investigar la asociación combinada de MF, CRF y SEADiet en el AIP en adolescentes. Se trata de un estudio transversal, basado escolares, que se dirigió a 493 adolescentes (285 niñas), con edades comprendidas entre los 15 a 18 años, procedentes del archipiélago portugués de las Azores. Las CRF se midieron mediante una prueba de sprint y las MF mediante pruebas con flexiones y abdominales. La adherencia a la SEADiet se evaluó con un cuestionario semicuantitativo sobre la frecuencia de las comidas. El AIP se calculó como log (TG/HDL-C). Se evaluaron las medidas de la fase puberal y el estatus socioeconómico. La regresión lineal mostró una asociación significativa inversa entre MF (β estandarizado = -0,165; p < 0,001), CRF (β estandarizado = -0,081; p < 0,030) y SEADiet (β estandarizado = -0,081; p < 0,045) con el AIP, tras los ajustes por edad, sexo, fase puberal y educación parental. Asimismo, los participantes clasificados con una adherencia muy buena, así como los que tuvieron una baja adherencia a la SEADiet, pero con BajasMF/BajasCRF contaron con el promedio más alto en el AIP (F(7.482) = 3.270; p = 0,002). Además, el grupo con una muy buena SEADiet con AltasMF/AltasCRF mostró el más bajo AIP, cuando se compara con el grupo que tenía una baja adherencia a la SEADiet con AltasMF/AltasCRF (p = 0.03). El AIP está inversamente asociado con MF, CRF y SEADiet. La baja MF, combinada con los niveles bajos de CRF, parece superar el efecto potencial saludable de contar con una muy buena adherencia a la SEADiet en el AIP. No obstante, una muy buena adherencia a la SEADiet parece mejorar el AIP en aquellos adolescentes con altos niveles de condición física.

Modulación de los niveles de lipoproteínas de alta densidad y las citoquinas IL-1β e IL-6 en pacientes con dengue / Modulation of high-density lipoprotein and cytokine IL-1β and IL-6 levels in patients with dengue

RESUMEN Objetivos. Evaluar los niveles de lipoproteínas de alta densidad (HDL) y citoquinas proinflamatorias en pacientes con dengue clasificados según la gravedad del cuadro clínico. Materiales y métodos. Se realizó un estudio descriptivo, incluyendo 70 individuos con dengue, clasificados como: sin signos de alarma (DSSA), con signos de alarma (DCSA) y dengue grave (DG); 15 donantes sanos fueron incluidos como controles (CS). Los niveles séricos de IL-1β e IL-6 fueron cuantificados por ELISA, y los de HDL en suero por ensayo colorimétrico; además se determinó el recuento de plaquetas y el porcentaje de hematocrito. Resultados. Los niveles de IL-1β e IL-6 se encontraron aumentados en los pacientes con DENV respecto a los controles sanos. Dicho aumento fue más evidente en los pacientes con dengue, de acuerdo con la gravedad del cuadro clínico. Los niveles de HDL se hallaron disminuidos en los pacientes con dengue comparados con los controles sanos. Los análisis de correlación mostraron asociaciones estadísticamente significativas entre HDL y el número de plaquetas; así como entre el porcentaje de hematocrito y los niveles de IL-1β. Conclusiones. El aumento de IL-1β e IL-6 y la disminución de HDL en los estadios clínicos más graves sugieren que ambos factores están implicados en el desarrollo de la patogénesis y severidad. Las correlaciones permiten observar una posible asociación entre HDL y el número de plaquetas que permite dar una aproximación al posible papel de las HDL en la patogénesis del dengue, pero aún es necesario realizar estudios adicionales que permitan elucidar su importancia en el curso de la infección por DENV.

ABSTRACT Objectives. To assess High-Density Lipoprotein (HDL) and pro-inflammatory cytokine levels in patients with dengue classified according to the severity of the clinical presentation. Materials and Methods. A descriptive study was carried out with 70 individuals with dengue, classified as no alarm signs (DSSA), with signs of alarm (DCSA), and severe dengue (DG); 15 healthy donors were included as controls (CS). The serum levels of IL-1β and IL-6 were quantified through ELISA, and the HDL levels through serum by a colorimetric test. In addition, the platelet count and the hematocrit percentage were determined. Results. Levels of IL-1β and IL-6 were found to be increased in patients with DENV vs. the healthy controls. Said increase was more evident in patients with dengue and in line with the severity of the clinical presentation. The HDL levels were found to be decreased in patients with dengue versus healthy controls. The correlation analysis showed statistically significant associations between HDL and the platelet number, as well as between the hematocrit percentage and the levels of IL-1β. Conclusions. The increased IL-1β and IL-6 and the decreased HDL levels in the most severe clinical stages suggest that both factors are involved in the development of the pathogenesis and severity. The correlations allow the observation of a potential association between HDL and platelet count, which allows us to provide an approach to the possible role of HDL in the pathogenesis of dengue, but it is still necessary to perform additional studies that will allow to state their importance in the course of the DENV infection.

Association between triglyceride/HDL cholesterol ratio and carotid atherosclerosis in postmenopausal middle-aged women. / Asociación entre la razón triglicéridos/colesterol HDL y ateromatosis carotídea en mujeres posmenopáusicas de mediana edad.

BACKGROUND AND OBJECTIVE: The triglyceride/HDL cholesterol ratio, as a surrogate marker of insulin resistance, may be associated to presence of subclinical carotid atherosclerosis in postmenopausal women. The aim of this study was to explore this association. PATIENTS AND METHODS: Women (last menstrual period≥2 years) in primary prevention up to 65 years of age were recruited. Association between the triglyceride/HDL cholesterol (HDL-C) ratio and presence of carotid plaque, assessed by ultrasonography, was analyzed. ROC analysis was performed, determining the precision of this ratio to detect carotid plaque. RESULTS: A total of 332 women (age 57±5 years) were recruited. Triglyceride/HDL-C ratio was 2.35±1.6. Prevalence of carotid plaque was 29%. Women with carotid plaque had higher triglyceride/HDL-C ratios (3.33±1.96 vs. 2.1±1.2, P<.001) than women with no carotid plaque. A positive relationship was seen between quintiles of this ratio and prevalence of carotid plaque (p<.001). Regardless of other risk factors, women with higher triglyceride/HDL-C ratios were more likely to have carotid plaque (odds ratio 1.47, 95% confidence interval 1.20-1.79, P<.001). The area under the curve of the triglyceride/HDL-C ratio to detect carotid plaque was .71 (95% confidence interval .65 to .76), and the optimal cut-off point was 2.04. CONCLUSIONS: In postmenopausal women in primary prevention, insulin resistance, estimated from the triglyceride/HDL-C ratio, was independently associated to a greater probability of carotid plaque. A value of such ratio greater than 2 may be used for assessing cardiovascular risk in this particular group of women.

Efecto del ejercicio sobre las subpoblaciones HDL, la enzima lecitina-colesterol acil-transferasa y la proteína transportadora de ésteres de colesterol en estudiantes de Medicina / Effect of exercise in HDL subpopulations, lecithin-cholesterol acyltransferase enzyme (LCAT) and ester transfer proteincholesterol (CETP) in medical students

Objetivo: Evaluar el efecto del ejercicio físico sobre los niveles de las subpoblaciones HDL, enzima lecitina-colesterol acil-transferasa y la proteína transportadora de ésteres de colesterol en estudiantes de Medicina. Método: La población se dividió de manera voluntaria en 2 grupos: ejercicio y no ejercicio. Se midieron perímetro abdominal e índice de masa corporal, subfracciones de HDL2 y HDL3 por precipitación iónica, y enzima lecitina-colesterol acil-transferasa y proteína transportadora de ésteres de colesterol mediante Enzyme-Linked Immuno Sorbent Assay (ELISA). Resultados: El perfil lipídico de riesgo aumentó en ambos grupos: las HDL, HDL3 y HDL2 disminuyeron en ambos grupos, pero solo las HDL2 lo hicieron de forma significativa en el grupo que realizó ejercicio. La lecitina-colesterol acil-transferasa y la proteína transportadora de ésteres de colesterol permanecieron sin cambios significativos. Sin embargo, en el grupo que hizo ejercicio hubo disminución estadísticamente significativa de HDL2 y lecitina-colesterol acil-transferasa, en las mujeres. Conclusiones: El ejercicio logra modificar algunas variables como el perímetro abdominal, el índice de masa corporal y las HDL3. Estas modificaciones son dependientes del género, pero, a pesar de la intervención de 3 meses con un programa de ejercicio, este no logra reducir los factores de riesgo lipídico en esta población de estudiantes de Medicina, debido a que su entorno hace muy compleja la respuesta metabólica al ejercicio.

Objective: To evaluate exercise effect on HDL subpopulations, lecithin-cholesterol acyltransferase enzyme and ester transfer protein cholesterol levels in medical students. Method: Population was divided voluntarily into 2 groups, exercise and no exercise. Waist circumference and body mass index were measured; subfractions HDL2 and HDL3 by ion precipitation and LCAT and CETP enzymes Enzyme-Linked Immuno-Sorbent Assay (ELISA). Results: Lipidrisk profile increased in both groups; HDL, HDL2 and HDL3 decreased in both groups, but only the HDL2 decreased significantly in students who exercised. LCAT and CETP remained without significant changes, however, in the exercise group, there was statistically significant decrease in HDL2 and LCAT in women. Conclusions: This study shows that exercise does alter some variables such as waist circumference, body mass index and HDL3. These changes are dependent on gender, but despite the intervention of 3 months with an exercise program, it fails reducing lipid risk factors in this medical student populations, given their environment, which complicates their metabolic response to exercise.

rs11613352 polymorphism (TT genotype) associates with a decrease of triglycerides and an increase of HDL in familial hypercholesterolemia patients.

INTRODUCTION AND OBJECTIVES: Recent genome-wide association studies have identified a locus on chromosome 12q13.3 associated with plasma levels of triglyceride and high-density lipoprotein cholesterol, with rs11613352 being the lead single nucleotide polymorphism in this genome-wide association study locus. The aim of the study is to investigate the involvement of rs11613352 in a population with high cardiovascular risk due to familial hypercholesterolemia. METHODS: The single nucleotide polymorphism was genotyped by Taqman(®) assay in a cohort of 601 unrelated familial hypercholesterolemia patients and its association with plasma triglyceride and high-density lipoprotein cholesterol levels was analyzed by multivariate methods based on linear regression. RESULTS: Minimal allele frequency was 0.17 and genotype frequencies were 0.69, 0.27, and 0.04 for CC, CT, and TT genotypes, respectively. The polymorphism is associated in a recessive manner (TT genotype) with a decrease in triglyceride levels (P=.002) and with an increase in high-density lipoprotein cholesterol levels (P=.021) after adjusting by age and sex. CONCLUSIONS: The polymorphism rs11613352 may contribute to modulate the cardiovascular risk by modifying plasma lipid levels in familial hypercholesterolemia patients.

Sobrepeso y dislipidemias en adolescentes / Overweight and dyslipidemias in teenagers

Introducción: actualmente hay consenso en que el proceso aterosclerótico se inicia en la infancia, y la dislipidemia es uno de los principales factores de riesgo aterogénicos que deben ser estudiados, así como la valoración nutricional para una adecuada prevención. Objetivo: identificar algunas señales de aterosclerosis tempranas como el sobrepeso y las dislipidemias en adolescentes. Métodos: se realizó un estudio descriptivo transversal de 372 adolescentes de la Secundaria Básica Protesta de Baraguá. Se hicieron mediciones de peso, talla, índice de masa corporal y circunferencia de la cintura. Se tomó muestra de sangre venosa con ayuno de 12 horas. Se midió el colesterol total, el colesterol unido a lipoproteína baja y alta densidad, y triglicéridos. En el análisis estadístico se realizaron prueba de comprobación de media entre variables de valoración nutricional y lipídicas entre sexos (prueba t), y se trabajó con una probabilidad de error menor de 0,05. Resultados: la media del peso, talla y circunferencia de la cintura fueron mayores en el sexo masculino (p< 0,05). El exceso de peso fue 23,7 por ciento, y a partir del percentil 90-97 hubo un 21,8 por ciento de exceso de grasa abdominal. La media del colesterol total, lipoproteínas de alta y baja densidad y triglicéridos, fue similar en los diferentes sexos, sin relación significativa (p> 0,05). El 18,5 por ciento presentó colesterol total limítrofe alto, el 26,6 por ciento tenía triglicéridos limítrofe alto y 7,5 Overweight and dyslipidemias in teenagers alto, con predominio del sexo femenino. Conclusiones: alrededor de la cuarta parte de los adolescentes tenían exceso de peso e incremento de la grasa abdominal, casi la cuarta parte tenía el colesterol total limítrofe y alto, y la alteración lipídica observada con mayor frecuencia fue la hipertrigliceridemia(AU)

Introduction: there is a current consensus that the atherosclerotic process begins at childhood and that dyslipidemia is one of the atherogenic risk factors to be studied together with the nutritional assessment for the adequate prevention of atherosclerosis. Objective: to identify some early signs of atherosclerosis such as overweight and dyslipidemias in teenagers. Methods: a cross-sectional descriptive study of 372 teenagers from Protesta de Baragua junior high school. Weight, height, body mass index and waist circumference were measured. Blood samples were taken after 12 hour fasting. Total cholesterol, low and high density lipoprotein cholesterol and triglyceride were all measured. The statistical analysis included the t test among nutritional assessment and lipid variables between sexes and the error probability was lower than 0.05. Results: weight, height and waist circumference means were higher in males (p< 0.05). Overweight was 23.7 percent and from the 90-97th percentile, the excessive abdominal fat was 21.8 percent. The mean of total cholesterol, high and low density lipoproteins and triglycerides was similar in both sexes, with no significant relation (p> 0.05). In this group, 18.5 of adolescents presented with borderline high total cholesterol, 26.6 showed borderline high triglyceride rate and 7.5 percent had high cholesterol, being females predominant. Conclusions: one fourth of adolescents approximately exhibited overweight and increased abdominal fat; almost 25 percent had reached borderline and high total cholesterol whereas the most observed lipid disorder was hypertrigliceridemia(AU)

Sobrepeso y dislipidemias en adolescentes / Overweight and dyslipidemias in teenagers

INTRODUCCIÓN: actualmente hay consenso en que el proceso aterosclerótico se inicia en la infancia, y la dislipidemia es uno de los principales factores de riesgo aterogénicos que deben ser estudiados, así como la valoración nutricional para una adecuada prevención. OBJETIVO: identificar algunas señales de aterosclerosis tempranas como el sobrepeso y las dislipidemias en adolescentes. MÉTODOS: se realizó un estudio descriptivo transversal de 372 adolescentes de la Secundaria Básica "Protesta de Baraguá". Se hicieron mediciones de peso, talla, índice de masa corporal y circunferencia de la cintura. Se tomó muestra de sangre venosa con ayuno de 12 horas. Se midió el colesterol total, el colesterol unido a lipoproteína baja y alta densidad, y triglicéridos. En el análisis estadístico se realizaron prueba de comprobación de media entre variables de valoración nutricional y lipídicas entre sexos (prueba t), y se trabajó con una probabilidad de error menor de 0,05. RESULTADOS: la media del peso, talla y circunferencia de la cintura fueron mayores en el sexo masculino (p< 0,05). El exceso de peso fue 23,7 %, y a partir del percentil 90-97 hubo un 21,8 % de exceso de grasa abdominal. La media del colesterol total, lipoproteínas de alta y baja densidad y triglicéridos, fue similar en los diferentes sexos, sin relación significativa (p> 0,05). El 18,5 % presentó colesterol total limítrofe alto, el 26,6 % tenía triglicéridos limítrofe alto y 7,5 % alto, con predominio del sexo femenino. CONCLUSIONES: alrededor de la cuarta parte de los adolescentes tenían exceso de peso e incremento de la grasa abdominal, casi la cuarta parte tenía el colesterol total limítrofe y alto, y la alteración lipídica observada con mayor frecuencia fue la hipertrigliceridemia.

INTRODUCTION: there is a current consensus that the atherosclerotic process begins at childhood and that dyslipidemia is one of the atherogenic risk factors to be studied together with the nutritional assessment for the adequate prevention of atherosclerosis. OBJECTIVE: to identify some early signs of atherosclerosis such as overweight and dyslipidemias in teenagers. METHODS: a cross-sectional descriptive study of 372 teenagers from "Protesta de Baragua" junior high school. Weight, height, body mass index and waist circumference were measured. Blood samples were taken after 12 hour fasting. Total cholesterol, low and high density lipoprotein cholesterol and triglyceride were all measured. The statistical analysis included the t test among nutritional assessment and lipid variables between sexes and the error probability was lower than 0.05. RESULTS: weight, height and waist circumference means were higher in males (p< 0.05). Overweight was 23.7 % and from the 90-97th percentile, the excessive abdominal fat was 21.8 %. The mean of total cholesterol, high and low density lipoproteins and triglycerides was similar in both sexes, with no significant relation (p> 0.05). In this group, 18.5 % of adolescents presented with borderline high total cholesterol, 26.6 % showed borderline high triglyceride rate and 7.5 % had high cholesterol, being females predominant. CONCLUSIONS: one fourth of adolescents approximately exhibited overweight and increased abdominal fat; almost 25 % had reached borderline and high total cholesterol whereas the most observed lipid disorder was hypertrigliceridemia.

Papel protector de las lipoproteínas de alta densidad en sepsis: aspectos básicos e implicancias clínicas / Protective role of high density lipoproteins in sepsis: basic issues and clinical implications

High density lipoproteins (HDL) are responsible of reverse cholesterol transport and play an important antiatherogenic role. In recent years, several studies suggest that HDL have additional functions, including a possible anti-inflammatory activity in infectious conditions. Furthermore, available evidence indicates that the presence of lipopolysaccharide (LPS) within the circulation during infectious states induced by gram-negative bacteria may be involved in the decrease in HDL cholesterol levels and changes in lipoprotein composition, which have been associated with a higher mortality due to sepsis in animal models and in humans. In this article, we review this subject and also discuss possible mechanisms that explain the positive impact achieved by native HDL, reconstituted HDL, or HDL apolipoprotein peptides on the inflammatory response and mortality in models of endotoxemia. In this regard, it has been proposed that one of the mechanisms by which HDL protect against sepsis may be mediated by its binding ability and/or neutralizing capacity on LPS, avoiding an excessive response of the immune system. Thus, increasing blood levels of HDL and/or parenteral HDL administration may represent a new anti-inflammatory tool for managing septic states in humans.

Las lipoproteínas de alta densidad (HDL) son responsables del transporte reverso de colesterol y ejercen un importante papel anti-aterogénico. En los últimos años, diversos estudios indican que las HDL también tendrían otras funciones críticas, incluyendo una posible actividad anti-inflamatoria durante estados infecciosos. Además, la evidencia disponible sugiere que la presencia de lipopolisacárido (LPS) en la circulación durante estados infecciosos inducidos por bacterias gramnegativas podría estar involucrado en la disminución del colesterol HDL y los cambios en composición de esta clase lipoproteínas, lo cual se asociaría con una mayor tasa de mortalidad por sepsis en modelos animales y en humanos. En este trabajo, se revisan los antecedentes mencionados y además se discuten posibles mecanismos que explican la disminución de la respuesta inflamatoria y de la mortalidad que se logran en modelos de endotoxemia tratados con HDL o preparaciones similares. En este sentido, se ha propuesto que uno de los mecanismos protectores de las HDL estaría mediado por su capacidad de unión y/o neutralización del LPS, evitando una respuesta exacerbada del sistema inmune. De esta manera, el aumento de los niveles sanguíneos de HDL y/o su administración parenteral podrían constituir nuevas herramientas anti-inflamatorias para el manejo de estados sépticos en humanos.

[Association between venous thrombosis and dyslipidemia]. / Asociación entre enfermedad tromboembólica venosa y dislipidemia.

BACKGROUND AND OBJECTIVE: Venous and arterial thrombosis, despite being historically considered as distinct conditions, share certain risk factors. Dyslipidemia is a clinical condition with a relatively high prevalence in the population and has been associated with an increased thrombotic risk. Lipids and lipoproteins modulate the expression and/or function of thrombotic, fibrinolytic and rheological factors. PATIENTS AND METHOD: We have developed a descriptive, retrospective, comparative, cross-sectional study including a group of 313 patients with venous thromboembolism (VTE). We collected basic demographic data, cardiovascular risk factors and thrombotic complications. All patients were subjected to a lipid profile study with determination of total cholesterol, high density lipoprotein cholesterol (cHDL), low density lipoprotein cholesterol (cLDL) and triglycerides. RESULTS: The multivariable analysis showed that dyslipidemia was a risk factor for VTE (odds ratio [OR] 3.87, 95% confidence interval [95% CI] 2.72-5.56; P<.0001). Of a total of 313 patients included in the study, 31% (n=97) had a recurrent thrombotic event and 23% (n=72) developed post-thrombotic syndrome. cHDL levels below 35 mg/dl and cLDL levels higher than 180 mg/dl represented risk factors for the development of recurrent thrombosis, OR 3.12 (95% CI 1.35-7.74; P=.008) and OR 2.35 (95% CI 1.24-4.45; P=.008), respectively, and post-thrombotic syndrome, OR 3.44 (95% CI 1.43-8.83; P=.005) and OR 2.35 (95% CI 1.24-4.45; P=.008). CONCLUSIONS: Our study confirmed the association between dyslipidemia and VTE and showed a risk of thrombosis nearly 4 times higher in individuals with this disease. In addition, alterations in the lipid profile were also related to a higher prevalence of thrombotic complications, recurrence and post-thrombotic syndrome.

[Alterations in the protein content and dysfunction of high-density lipoproteins from hyperhomocysteinemic mice]. / Alteraciones en el contenido proteico y disfunción de lipoproteínas de alta densidad en ratones hiperhomocisteinémicos.

AIM: The aim of this study was to evaluate the proteic changes in high-density lipoproteins (HDL) induced by methionine-induced hyperhomocysteinemia in mice and its relationship with two of their main antiatherogenic properties. METHODS AND RESULTS: The oral administration of methionine resulted in an elevation (~8 times) in the plasma concentration of homocysteine. Hyperhomocysteinemia was inversely correlated with the plasma concentration of HDL cholesterol and its main protein component of HDL, apolipoprotein (apo) A-I, respectively. The cholesterol efflux in vivo from macrophages to HDL was decreased in hyperhomocysteinemic mice compared with the control mice. However, the reverse cholesterol transport from macrophages to feces remained unchanged. On the other hand, the ability of HDL from hyperhomocysteinemic mice to prevent the oxidative modification of low-density lipoproteins (LDL) was found decreased and associated with a concomitant reduction in the plasma activity of paraoxonase-1 (PON1) and the plasma concentration of apoA-I, and with a relative reduction in the apoA-IV content (~1.5 times) in the hyperhomocysteinemic HDL, respectively. CONCLUSION: The decrease in the ability of HDL from hyperhomocysteinemic mice to prevent LDL from oxidation was associated with a decrease in the apoA-I, PON1 and apoA-IV.

Concentraciones bajas del colesterol asociado a las lipoproteínas de alta densidad, un factor de riesgo a considerar en mujeres con cardiopatía isquémica / Low concentrations of cholesterol associated with high density lipoproteins (HDL), a risk factor to consider in women with ischemic hearth disease

Introducción: La cardiopatía isquémica es una de las principales causas de muerte en la mujer, tanto en Cuba, como a nivel mundial. Objetivo: El objetivo del estudio fue determinar si las concentraciones bajas de colesterol asociado a las lipoproteínas de alta densidad, representan un factor de riesgo a considerar, en mujeres con cardiopatía isquémica. Métodos: Se realizó un estudio observacional, transversal en 727 mujeres, durante el período de enero 2010 a diciembre 2012. Se determinó el por ciento de mujeres sin o con cardiopatía isquémica (CI), con diferentes rangos de c-HDL (normal o patológico). Además se formaron un grupo control (A) y dos grupos con CI sin o con antecedentes de infarto agudo del miocardio (B y C), para comparar el perfil lipídico. Además, diferentes factores de riesgo para la CI se relacionaron con la variable c-HDL. Resultados: Las mujeres con CI presentaron un promedio de edad y un índice cintura-cadera, dentro del rango de riesgo cardiovascular. Los niveles de triglicéridos y VLDL-c fueron significativamente superiores (p< 0,05*), relacionados con una disminución significativa (p< 0,05*) del HDL-c, en las mujeres con CI (grupos B y C) al compararlos con el grupo control. Además, se encontró asociación significativa (p< 0,05*), entre las cifras bajas de HDL-c, con la presencia de cardiopatía isquémica, hipertrigliceridemia y el antecedente de cirugía de revascularización miocárdica. Conclusiones: Las concentraciones bajas de HDL-c están asociadas con la presencia de cardiopatía isquémica e hipertrigliceridemia. Por tanto, el control de los niveles de HDL-c representa un objetivo terapéutico que contribuye a reducir eventos cardiovasculares mayores. Además la presencia de otros factores de riesgo como la edad y el sobrepeso, pudiera influir en el desarrollo de estos eventos(AU)

Background: Ischemic heart disease is one of the main causes of death in women, both in Cuba and in the world. Objective: The objective of this study was to determine whether low cholesterol concentrations, associated with high density lipoproteins, represent a risk factor to consider in women with ischemic heart disease. Methods: An observational, transversal study was conducted in 727 women during the period from January 2010 to December 2012. The percent of women with or without ischemic heart disease (IHD) and different ranges of HDL - C levels (normal or pathological) was determined. Results: Women with IHD had a mean age and a waist-hip ratio within the range of cardiovascular risk. Triglycerides and VLDL-C levels were significantly higher (p <0.05 *), related to a significant decrease of HDL- C levels (p <0.05 *) in women with IHD (groups B and C) when compared with the control group. Also, a significant association (p<0, 05*) was found between the low levels of HDL- C levels, with presence of ischemic heart disease, hypertriglyceridemia and antecent of myocardial revascularization surgery. Conclusions: Low HDL-C levels are associated with the presence of ischemic heart disease and hypertriglyceridemia. Therefore, the control of HDL- C levels represents a therapeutic target which helps to reduce major cardiovascular events. Moreover, the presence of other risk factors such as age and overweight could influence the development of these events(AU)

Concentraciones bajas del colesterol asociado a las lipoproteínas de alta densidad, un factor de riesgo a considerar en mujeres con cardiopatía isquémica / Low concentrations of cholesterol associated with high density lipoproteins (HDL), a risk factor to consider in women with ischemic hearth disease

Introducción: La cardiopatía isquémica es una de las principales causas de muerte en la mujer, tanto en Cuba, como a nivel mundial. Objetivo: El objetivo del estudio fue determinar si las concentraciones bajas de colesterol asociado a las lipoproteínas de alta densidad, representan un factor de riesgo a considerar, en mujeres con cardiopatía isquémica. Métodos: Se realizó un estudio observacional, transversal en 727 mujeres, durante el período de enero 2010 a diciembre 2012. Se determinó el por ciento de mujeres sin o con cardiopatía isquémica (CI), con diferentes rangos de c-HDL (normal o patológico). Además se formaron un grupo control (A) y dos grupos con CI sin o con antecedentes de infarto agudo del miocardio (B y C), para comparar el perfil lipídico. Además, diferentes factores de riesgo para la CI se relacionaron con la variable c-HDL. Resultados: Las mujeres con CI presentaron un promedio de edad y un índice cintura-cadera, dentro del rango de riesgo cardiovascular. Los niveles de triglicéridos y VLDL-c fueron significativamente superiores (p< 0,05*), relacionados con una disminución significativa (p< 0,05*) del HDL-c, en las mujeres con CI (grupos B y C) al compararlos con el grupo control. Además, se encontró asociación significativa (p< 0,05*), entre las cifras bajas de HDL-c, con la presencia de cardiopatía isquémica, hipertrigliceridemia y el antecedente de cirugía de revascularización miocárdica. Conclusiones: Las concentraciones bajas de HDL-c están asociadas con la presencia de cardiopatía isquémica e hipertrigliceridemia. Por tanto, el control de los niveles de HDL-c representa un objetivo terapéutico que contribuye a reducir eventos cardiovasculares mayores. Además la presencia de otros factores de riesgo como la edad y el sobrepeso, pudiera influir en el desarrollo de estos eventos.

Background: Ischemic heart disease is one of the main causes of death in women, both in Cuba and in the world. Objective: The objective of this study was to determine whether low cholesterol concentrations, associated with high density lipoproteins, represent a risk factor to consider in women with ischemic heart disease. Methods: An observational, transversal study was conducted in 727 women during the period from January 2010 to December 2012. The percent of women with or without ischemic heart disease (IHD) and different ranges of HDL - C levels (normal or pathological) was determined. Results: Women with IHD had a mean age and a waist-hip ratio within the range of cardiovascular risk. Triglycerides and VLDL-C levels were significantly higher (p <0.05 *), related to a significant decrease of HDL- C levels (p <0.05 *) in women with IHD (groups B and C) when compared with the control group. Also, a significant association (p<0, 05*) was found between the low levels of HDL- C levels, with presence of ischemic heart disease, hypertriglyceridemia and antecent of myocardial revascularization surgery. Conclusions: Low HDL-C levels are associated with the presence of ischemic heart disease and hypertriglyceridemia. Therefore, the control of HDL- C levels represents a therapeutic target which helps to reduce major cardiovascular events. Moreover, the presence of other risk factors such as age and overweight could influence the development of these events.

Dislipidemias en comunidades pehuenches de Alto Biobio chileno / Dyslipidemias in Pehuenche communities from Chilean Alto Bio Bio

Se realizó un estudio descriptivo y transversal de 400 habitantes (mayores de 15 años de edad) de las comunidades pehuenches de Alto Biobio en Chile, de mayo a octubre del 2011, a fin de determinar la prevalencia de dislipidemias en esta población. La información necesaria se recolectó sobre la base de la normativa y los criterios del Ministerio de Salud y como resultados generales de las concentraciones plasmáticas promedio y la prevalencia de dislipidemias figuraron: colesterol total de 169,20 ±26,36 mg/dL y 8,2 %; lipoproteínas de baja densidad de 89,93 ±23,31 mg/dL y 4,5 %; triglicéridos de 145,89 ±48,96 mg/dL y 53,0 %; y lipoproteínas de alta densidad de 50 ±8,87 mg/dL y 28,3 %. Las cifras fueron inferiores en el grupo etario de 15-24 años y en personas de ascendencia pehuenche, con una pobre asociación a sobrepeso u obesidad abdominal; en general, resultaron menores a las de los citadinos.

A descriptive and cross-sectional study was carried out in 400 people (over 15 years) from Pehuenche communities of the Chilean Alto Biobio, from May to October 2011, in order to determine the prevalence of dyslipidemias in this population. Necessary information was collected on the basis of regulations and criteria of the Ministry of Health, and as general results of average plasma levels and prevalence of dyslipìdemia were: total cholesterol 169.20 ± 26.36 mg/dL and 8.2%; low-density lipoproteins 89.93 ± 23.31 mg/dL and 4.5%; triglycerides 145.89 ± 48.96 mg/dL and 53.0%; and high-density lipoproteins 50 ±8.87 mg/dL and 28.3%. The values were lower in the age group of 15-24 years and in Pehuenche people with poor association with abdominal obesity or overweight; in general, they were lower than those of the city people.