Influence of ultraviolet radiation on the production of 25 hydroxyvitamin d in the elderly population in the city of São Paulo (23 ° 34's), Brazil

The lack of vitamin D is a major changeable factor involved in the pathophysiology of osteoporosis. Since the major source for this hormone is its cutaneous synthesis via ultraviolet radiation (UVR), we studied the serum level of 25-hydroxyvitamin D (25OHD) in 250 free-living elderly people (79.1 ye...

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Bibliographic Details
Published in:Osteoporosis international 2005-12, Vol.16 (12), p.1649-1654
Main Authors: LUPORINI SARAIVA, Gabriela, SEABRA CENDOROGLO, Maysa, RAMOS, Luiz Roberto, QUIRINO, Lara Miguel, VIEIRA, Araujo José Gilberto H, KUNII, Ilda, HAYASHI, Lillian F, CORREA, Marcelode Paula, LAZARETTI-CASTRO, Marise
Format: Article
Language:English
Subjects:
Aged
Biological and medical sciences
Brazil - epidemiology
Calcium - blood
Climate
Cross-Sectional Studies
Diseases of the osteoarticular system
Exercise
Female
Fractures
Humans
Life Style
Male
Medical sciences
Older people
Osteoporosis
Osteoporosis. Osteomalacia. Paget disease
Parathyroid Hormone - blood
Pathophysiology
Patients
Prevalence
Seasons
Sex Distribution
Sunlight
Ultraviolet radiation
Ultraviolet Rays
Vitamin D
Vitamin D - analogs & derivatives
Vitamin D - biosynthesis
Vitamin D - blood
Vitamin D Deficiency - blood
Vitamin D Deficiency - epidemiology
Vitamin D Deficiency - ethnology
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Summary:The lack of vitamin D is a major changeable factor involved in the pathophysiology of osteoporosis. Since the major source for this hormone is its cutaneous synthesis via ultraviolet radiation (UVR), we studied the serum level of 25-hydroxyvitamin D (25OHD) in 250 free-living elderly people (79.1 years old) from a subtropical region according to the UVR incidence and its correlations with parathormone (PTH) and ionized calcium. UVR and 25OHD differed according to the season of the year (P
ISSN:0937-941X
1433-2965
DOI:10.1007/s00198-005-1895-3