Differential expression of cathepsins K, S and V between young and aged Caucasian women skin epidermis.

Cutaneous aging translates drastic structural and functional alterations in the extracellular matrix (ECM). Multiple mechanisms are involved, including changes in protease levels. We investigated the age-related protein expression and activity of cysteine cathepsins and the expression of two endogenous protein inhibitors in young and aged Caucasian women skin epidermis.

A photographic scale for the evaluation of facial skin aging in Indian women.

The process of facial skin aging differs between different ethnic populations. Standardized tools to objectively evaluate facial skin aging in clinical and epidemiological studies in different ethnic populations are needed. We designed and validated a photonumeric scale for assessment of facial aging in the Indian population.

In vivo skin antioxidant effect of a new combination based on a specific Vitis vinifera shoot extract and a biotechnological extract.

Background And Objectives: Ultraviolet (UV) light produces reactive oxygen species (ROS) in skin, which accelerate aging by damaging DNA, proteins, lipids, and other cellular constituents. The aims of this study were to 1) evaluate the antioxidant properties of a Vitis vinifera shoot extract on cultured normal human keratinocytes, 2) compare the in vivo antioxidant of this extract in combination with a biotechnological extract (Ronacare Hydroine), and 3) evaluate the efficacy on photoaging skin of a serum based on a combination (Vitis vinifera shoot extract in hydroglycolic solution, or Sarmentine, and Ronacare Hydroine) after a 4-week application, and to quantify the additional improvement given by applying a cream with the serum.

Methods/study Design: An in vitro study was conducted to evaluate the antioxidant properties of Vitis vinifera shoot extract added to cultured normal human keratinocytes.