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Int J Endocrinol ; 2017: 6372964, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28250769


The aims of this study are to establish reference values for TSH in Lebanese schoolchildren; to look at the relationship between TSH and age, gender, BMI, socioeconomic status (SES), and thyroid antibodies (TAb); and to investigate the prevalence of abnormal TAb in this population. 974 Lebanese schoolchildren aged 8-18 years were recruited from 10 schools of different SES. Third-generation TSH, TPO-Ab, and Tg-Ab measurements were performed using the IMMULITE chemiluminescent immunoassay. The mean TSH is 2.06 ± 1.05 µUI/ml. TSH values are inversely correlated with age (p < 0.0001), are higher in boys than in girls (resp., 2.14 ± 1.10 and 1.98 ± 0.99 µUI/ml, p = 0.017), and are positively correlated with BMI (p < 0.0001). They are also significantly higher in subjects from low-SES schools (p = 0.03) and in girls with positive TAb (p = 0.026). In boys, TSH is independently associated with age, BMI, and schools' SES (p = 0.01, p = 0.03, and p = 0.026, resp.) while in girls, the association is only significant for age and TAb (p = 0.0001 and p = 0.015, resp.). The prevalence of TAb is 4.3% (3% for TPO-Ab and 2.1% for Tg-Ab). Our results showed higher TSH values in the pediatric Lebanese population compared to western populations. TSH varies according to age, gender, BMI, and SES and is associated in girls with TAb.

J Clin Lipidol ; 10(2): 378-85, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27055969


BACKGROUND: The prevalence of dyslipidelmia in pediatric Middle-Eastern populations is unknown. Our study aims to investigate the distribution and correlates of non-high-density lipoprotein cholesterol (non-HDL-C) and triglycerides among Lebanese school children. METHODS: A total of 969 subjects aged 8-18 years were included in the study (505 boys and 464 girls). Recruitment was done from 10 schools located in the Great Beirut and Mount-Lebanon areas. Non-fasting total cholesterol, triglycerides, and HDL-cholesterol (HDL-C) were measured. Non-HDL-C was calculated. Schools were categorized into 3 socioeconomic statuses (SESs; low, middle, and high). RESULTS: In the overall population, the prevalence of high non-HDL-C (>3.8 mmol/L), very high non-HDL-C (>4.9 mmol/L), and high triglycerides (>1.5 mmol/l) are respectively 9.2%, 1.24%, and 26.6%. There is no significant gender difference for non-HDL-C or triglycerides. Non-HDL-C and triglycerides are inversely correlated with age in girls (P < .0001 for both variables) but not in boys. They are also positively correlated with body mass index (BMI) in boys and girls (P < .0001 for all variables). There is no relationship between schools' socioeconomic process (SES) and non-HDL-C. However, triglycerides are higher in children from lower SES schools. After adjustment for age and body mass index (BMI), testosterone is inversely associated with triglycerides in boys (P < .0001). In a multivariate regression analysis, non-HDL-C is independently associated with age and BMI in girls (P < .0001 for both variables) but only with BMI in boys (P < .0001), whereas triglycerides are independently associated with BMI and schools' SES in both girls and boys. CONCLUSIONS: This study confirms, in our population, the association between obesity and both high non-HDL-C and triglycerides, and between high triglycerides and low SES.

Colesterol/sangre , Instituciones Académicas/estadística & datos numéricos , Triglicéridos/sangre , Adolescente , Distribución por Edad , Índice de Masa Corporal , Niño , Dislipidemias/sangre , Dislipidemias/epidemiología , Femenino , Humanos , Líbano/epidemiología , Masculino , Distribución por Sexo , Clase Social , Testosterona/sangre