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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Veröffentlicht in:	Osteoporosis international 2005-12, Vol.16 (12), p.1649-1654
Hauptverfasser:	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:	Artikel
Sprache:	eng
Schlagworte:	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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Zusammenfassung:	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