INGEBI   02650
INSTITUTO DE INVESTIGACIONES EN INGENIERIA GENETICA Y BIOLOGIA MOLECULAR "DR. HECTOR N TORRES"
Unidad Ejecutora - UE
artículos
Título:
Availability of Vitamin D Photoconversion Weighted UV Radiation in Southern South America
Autor/es:
DÍAZ, SUSANA, ; M. VERNET, ; A. PALADINI, ; C. CAMILIÓN, ; H. FUENZALIDA, ; G. DEFERRARI, .; CH. BOOTH, ; S. CABRERA, ; C. CASICCIA, ; M. DIEGUEZ, ; CH. LOVENGREEN, ; J. PEDRONI, ; A. ROSALES, ; J. VRSALOVIC
Revista:
Photochemical and Photobiological Sciences
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2011 vol. 10 p. 1854 - 1867
ISSN:
1474-905X
Resumen:
ABSTRACT   Ultraviolet Radiation (UVR) plays a key role in human health. The relationship between vitamin D photoconversion and UVR is well known. There is evidence relating low levels of vitamin D with certain internal cancers. Several epidemiological studies have shown an inverse relationship between these types of cancer and latitude, in accordance with UVR gradient. Given the latitudinal extension of Chile and Argentina (approximately from 24oS to 55 oS), the habitants of the southern regions would be exposed to low UVR. In this study, vitamin D photoconversion weighted irradiance in eight stations distributed between Jujuy (24.17°S, 65.02°W) and  Ushuaia (54° 50´S, 68° 18´W) were analyzed for maximum daily values, daily and annually integrated values. Results of UVR exposure, combined with skin type and body exposure were used to evaluate the latitudes at which population is at risk of low Vitamin D levels. It was observed that irradiances in southern regions are bellow the minimum required for vitamin D photoconversion during part of the year. Annual integrated irradiance in Ushuaia and Punta Arenas (53o and 55oS) are about half the values at stations further north, near 30oS, and even lower, if compared with Jujuy (24oS).