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Circulating 25-hydroxyvitamin D concentrations are correlated with cardiometabolic risk among American black and white adolescents living in a year-round sunny climate.

Abstract：

OBJECTIVE:Low vitamin D status is common among healthy black and white adolescents residing at southern U.S. latitudes with a year-round sunny climate. Thus we aimed to study the relationships between circulating 25-hydroxyvitamin D [25(OH)D] and cardiometabolic risk factors in this population. RESEARCH DESIGN AND METHODS:25(OH)D concentrations were measured with liquid chromatography tandem mass spectroscopy in 701 girls and boys (14-18 years old, 54% blacks, 49% females). Cardiometabolic risk was indexed by adipokines, inflammatory markers, fasting glucose, homeostatic model assessment-insulin resistance (HOMA-IR), lipid profile, and blood pressure (BP). RESULTS:Controlling for age, sex, race, sexual maturation, season, physical activity, and percent body fat, 25(OH)D concentrations were significantly correlated with adiponectin (r = 0.06, P = 0.05), leptin (r = -0.32, P < 0.01), fibrinogen (r = -0.05, P = 0.03), glucose (r = -0.16, P = 0.02), HOMA-IR (r = -0.17, P < 0.01), HDL cholesterol (r = 0.14, P = 0.02), systolic BP (r = -0.10, P = 0.02), and diastolic BP (r = -0.21, P < 0.01). When 25(OH)D concentrations were stratified into increasing tertiles, there were significant linear upward trends for adiponectin (P = 0.01) and HDL cholesterol (P = 0.04), but significant linear down trends for glucose (P < 0.01), HOMA-IR (P < 0.01), and systolic BP (P < 0.01), after adjusting for the above covariates. CONCLUSIONS:Circulating 25(OH)D concentrations are associated with various adverse cardiometabolic risk factors, independent of adiposity. Clinical trials addressing the effects of vitamin D supplementation on cardiometabolic risk are warranted in adolescents irrespective of their geographical regions.

journal_name

Diabetes Care

journal_title

Diabetes care

authors

Parikh S,Guo DH,Pollock NK,Petty K,Bhagatwala J,Gutin B,Houk C,Zhu H,Dong Y

doi

10.2337/dc11-1944

subject

Has Abstract

pub_date

2012-05-01 00:00:00

pages

1133-8

issue

eissn

0149-5992

issn

1935-5548

pii

dc11-1944

journal_volume

pub_type

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Circulating 25-hydroxyvitamin D concentrations are correlated with cardiometabolic risk among American black and white adolescents living in a year-round sunny climate.