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Low levels of 25(OH)D and insulin-resistance: 2 unrelated features or a cause-effect in PCOS?
MedLine Citation:
PMID:  22260937     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND & AIMS: Recent investigations have identified low vitamin D status as a hypothetical mechanism of insulin-resistance in Polycystic Ovary Syndrome (PCOS). Instead, some authors supported the hypothesis that low vitamin D levels and insulin-resistance are 2 unrelated features of body size in PCOS. Hence, we aimed to explore the association of 25-hydroxyvitamin D (25(OH)D) with anthropometric, metabolic and hormonal features in PCOS. METHODS: We assessed the association of low 25(OH)D levels with endocrine parameters, insulin-sensitivity evaluated by hyperinsulinemic euglycemic clamp (HEC) and body composition measured by DEXA in 38 women affected by PCOS. RESULTS: Low 25(OH)D (25(OH)D < 50 nmo/L) was detected in 37% of the entire cohort of patients. Body Mass Index (BMI), in particular total fat mass (p < 0.001), resulted to be the most predictor factor of 25(OH)D levels whereas Sex Hormone Binding Globulin (SHBG), Free Androgen Index (FAI), glucose uptake and fat free mass were not. CONCLUSIONS: Our data demonstrated that in PCOS low 25(OH)D levels are significantly determined by the degree of adiposity.
Authors:
Giovanna Muscogiuri; Caterina Policola; Annamaria Prioletta; Gianpio Sorice; Teresa Mezza; Annapia Lassandro; Silvia Della Casa; Alfredo Pontecorvi; Andrea Giaccari
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-17
Journal Detail:
Title:  Clinical nutrition (Edinburgh, Scotland)     Volume:  -     ISSN:  1532-1983     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309603     Medline TA:  Clin Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.
Affiliation:
Endocrinologia e Malattie del Metabolismo, Università Cattolica del Sacro Cuore, Rome, Itlay.
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