Effects of sunlight and diet on vitamin D status of pulmonary tuberculosis patients in Tbilisi, Georgia.
Nutrition
; 28(4): 362-6, 2012 Apr.
Article
em En
| MEDLINE
| ID: mdl-22304856
ABSTRACT
OBJECTIVE:
Vitamin D deficiency is common in tuberculosis (TB) and this may modulate immune responses. This study investigated vitamin D status in patients with TB and examined the sources of vitamin D in Tbilisi, Georgia.METHODS:
We measured plasma 25-hydroxyvitamin D (25[OH]D) and dietary vitamin D intake in patients with pulmonary TB (n = 85) in Tbilisi, Georgia. To determine the impact of season on vitamin D status, we tested the in vitro conversion of 7-dehydrocholesterol (7-DHC) to previtamin D(3) after sunlight exposure.RESULTS:
In subjects with TB, mean plasma 25(OH)D concentrations were 14.4 ± 7.0 ng/mL, and vitamin D insufficiency (25[OH]D <30 ng/mL) occurred in 97% of subjects. The dietary sources of vitamin D were mainly fish, eggs, and butter. The daily intake was well below recommended daily intakes in subjects with TB (172 ± 196 IU). The conversion of 7-DHC to previtamin D(3) was undetectable from October to March and highest in June and July from 1100 to 1400 h.CONCLUSION:
An insufficient vitamin D dietary intake and a limited production of vitamin D from sunlight for most of the year may explain the high prevalence of vitamin D insufficiency in patients with TB in Tbilisi.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Luz Solar
/
Tuberculose Pulmonar
/
Vitamina D
/
Deficiência de Vitamina D
/
Vitaminas
/
Estado Nutricional
/
Dieta
Tipo de estudo:
Prevalence_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Nutrition
Assunto da revista:
CIENCIAS DA NUTRICAO
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos