منابع مشابه
Vitamin D and COPD : seasonal variation is
Sequencing of all 27 CFTR exons, including flanking intronic regions, and a search for large rearrangements were undertaken in the remaining 18 DNA samples. Calling all the patients back for further familial genetic studies could not be considered and we assumed that two identified mutations are located in trans. ORs were calculated and proportions were compared with prior probability using the...
متن کاملSeasonal variation in Internet searches for vitamin D
Internet search rates for "vitamin D" were explored using Google Trends. Search rates increased from 2004 until 2010 and thereafter displayed a seasonal pattern peaking in late winter. This knowledge could help guide the timing of public health interventions aimed at managing vitamin D deficiency. PURPOSE The Internet is an important source of health information. Analysis of Internet search a...
متن کاملVitamin D and COPD: seasonal variation is important.
Janssens et al 1 have demonstrated the relationship between vitamin D status and lung function in patients with chronic obstructive pulmonary disease (COPD). However, in their study there was only one assessment of vitamin D status per patient. Given the minimal component of diet to vitamin D status (serum 25-hydroxyvitamin D (25(OH)D) concentration), 2 it is mostly determined by sunlight expos...
متن کاملInvestigating the patterns and determinants of seasonal variation in vitamin D status in Australian adults: the Seasonal D Cohort Study
BACKGROUND Vitamin D status generally varies seasonally with changing solar UVB radiation, time in the sun, amount of skin exposed, and, possibly, diet. The Seasonal D Study was designed to quantify the amplitude and phase of seasonal variation in the serum concentration of 25-hydroxyvitamin D, (25OH)D)) and identify the determinants of the amplitude and phase and those of inter-individual vari...
متن کاملSeasonal variation in vitamin D, vitamin D-binding protein, and dehydroepiandrosterone: risk of prostate cancer in black and white men.
Our previous study provided evidence that higher serum levels of the active form of vitamin D, 1,25-dihydroxyvitamin D (1, 25-D), might possibly slow the progression of subclinical to clinically significant prostate cancer in both black and white men, especially after age 57. This paper extends the prior study by contrasting seasonal variation in 1,25-D and its precursor, 25-hydroxyvitamin D (2...
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ژورنال
عنوان ژورنال: Proceedings of the Nutrition Society
سال: 1994
ISSN: 0029-6651,1475-2719
DOI: 10.1079/pns19940063