... or chronological ageing. As a consequence, any treatment aiming at increasing epidermal vitamin A would exert a protective effect against these deleterious conditions. Retinoids may counteract some deleterious actions of UV radiation by physical and biological mechanisms. Topical natural retinoic acid precursors...

... was to determine the effects of 2 different doses of dietary β-carotene on wrinkles and elasticity, procollagen gene expression and ultraviolet (UV)-induced DNA damage in human skin. Methods: Thirty healthy female subjects over the age of 50 years were randomized and received 2 different doses (30 and 90 mg/day...

...I. Uhoda; L. Petit; J.M. Krzesinski; C. Piérard-Franchimont; G.E. Piérard Background: Diverse skin alterations may develop in patients under chronic haemodialysis. Among them, signs of premature photo-ageing have been described. Aim: To assess alterations in the physical properties of skin...

...J.-L. Lévêque; E. Goubanova Background: There are few objective descriptions of the age-related changes taking place on the lips and perioral skin. This zone, however, has great importance in relational functions. Objectives: To describe quantitatively the age-related changes in dimension...

...Kazue Tsukahara; Yoshinori Takema; Shigeru Moriwaki; Tsutomu Fujimura; Takashi Kitahara; Genji Imokawa Background: Ultrasonic methods are commonly used for the noninvasive measurement of skin thickness. The effects of ageing on the skin have been reported to differ between Asians and Caucasians...