Vitamin D and cholesterol metabolism overlap significantly in the pathways that contribute to
their biosynthesis. However, our understanding of their independent and co-regulation is …

The skin is regularly exposed to several environmental aggressions, including solar
radiation, whose biological effects can induce sunburn, dyschromia, skin aging and cancer …

Sunburn, immunodepression, photoaging, and photocarcinogenesis, are some of the most
significant adverse effects of solar radiation in humans. Children are a population group of …

Las quemaduras solares, la inmunodepresión, el fotoenvejecimiento y la fotocarcinogénesis
son algunos de los efectos adversos más importantes de la radiación solar en el ser …

A systematic review of publications addressing change in vitamin D status (25-
hydroxyvitamin D (25OHD)) after exposure to UV radiation identified 2001 independent peer …

The aim of this study was to characterize the prevalence and seasonal variation of vitamin D
(vit D) deficiency/insufficiency in healthy children and adolescents in Greece, and to explore …

Background: To prove that serum vitamin D (VD) levels are strongly associated with
ankylosing spondylitis (AS) disease activity, the association between serum VD levels and …

Public health campaigns advise minimising UV radiation (UVR) exposure to prevent skin
cancer and precancer, eg actinic keratosis (AK). A 3-day clinical field study, in Brazil, was …

Many different study designs involve the analysis of the same subject (or experimental unit)
in different situations or under repeated conditions (Figure 1). This occurs in longitudinal …

Diversos desenhos de pesquisa analisam o mesmo sujeito (ou unidade experimental) em
diferentes situações ou sob condições repetidas (Figura 1). Isso ocorre nas avaliações …