Epidemiologic study of the C-3 epimer of 25-hydroxyvitamin D3 in a population-based sample
| Autor: | Ronghai Bo, Hilary Steltenpohl, Megan Zuelsdorff, Corinne D. Engelman, F. Javier Nieto, Taylor Kirby |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male medicine.medical_specialty Waist Epidemiologic study Population Critical Care and Intensive Care Medicine Article Young Adult chemistry.chemical_compound Wisconsin Surveys and Questionnaires Internal medicine medicine 25-Hydroxyvitamin D 2 Vitamin D and neurology Body Size Humans Vitamin D education Aged Calcifediol education.field_of_study Nutrition and Dietetics business.industry Food frequency questionnaire Middle Aged Diet Epidemiologic Studies Cross-Sectional Studies Endocrinology chemistry Dietary Supplements Sunlight Female Epimer Seasons Waist Circumference business |
| Zdroj: | Clinical Nutrition. 33:421-425 |
| ISSN: | 0261-5614 |
| DOI: | 10.1016/j.clnu.2013.06.005 |
| Popis: | Summary Background & aims Vitamin D is associated with many health outcomes and the blood concentration of 25-hydroxyvitamin D [25(OH)D] is commonly measured in clinical practice. A C-3 epimer of this compound, 3-epi-25(OH)D 3 , has recently been detected in blood samples. Few clinical assays currently detect this epimer and its physiological function is unknown, as are the demographic, behavioral, and physiologic factors that may be correlated with it. We sought to determine the correlation between these factors and 3-epi-25(OH)D 3 . Methods We conducted a cross-sectional population-based study of 303 non-Hispanic white participants in the Survey of the Health of Wisconsin. Serum 25(OH)D 2 , 25(OH)D 3 and 3-epi-25(OH)D 3 were measured by high-performance liquid chromatography tandem mass spectrometry. We measured vitamin D intake from foods and supplements via a food frequency questionnaire, sun exposure by spectrophotometry, waist circumference during a physical exam, and additional demographic and behavioral factors by questionnaire. We calculated the percent of 3-epi-25(OH)D 3 out of the total 25(OH)D 3 . Results Summer season ( P = 0.009), higher alcohol intake ( P = 0.007), and higher vitamin D intake from supplements ( P = 0.0004), but not food ( P = 0.20), were significantly associated with a higher percent of 3-epi-25(OH)D 3 relative to the total 25(OH)D 3 , although these associations appear to be partially driven by individuals with low 3-epi-25(OH)D 3 . Moreover, the percent of 3-epi-25(OH)D 3 was significantly correlated with the total 25(OH)D 3 ( r = 0.37, P Conclusions We report findings from an epidemiologic study of 3-epi-25(OH)D 3 and show that individuals with lower total 25(OH)D 3 tend to have a lower percent of 3-epi-25(OH)D 3 relative to the total. While this is the largest reported sample of adults with measured 3-epi-25(OH)D 3 , the sample size of 303 is relatively small and replication of our findings is necessary. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect