Grapes protects radiation ultraviolet.
-some compounds in the grape helps skin cells to protect against ultraviolet radiation from the Sun, according to a study by researchers at the University of Barcelona and CSIC. The work supports the use of grapes or its derivatives in the protective solar
Spain, August of 2011- the primary environmental cause of skin diseases are the solar ultraviolet (UV) rays, which cause cancer of the skin, burns and solar erythema and premature aging of the dermis and epidermis. Now, a Spanish study has proven that some substances in grapes can reduce cell damage in the skin exposed to the radiation.
UV radiation acting on the skin activating ‘ reactive oxygen species ’ (ERO). These compounds in turn oxidized macromolecules such as DNA and lipids, and shoot certain reactions and enzymes (JNK and p38MAPK) to induce cell death.
substances from grapes can reduce cell damage in the skin exposed to the radiation solar.
A group of scientists from the University of Barcelona and CSIC have shown that some substances Polyphenolic extracted from the grape (flavanoles) can reduce the formation of the ERO in human epidermal cells that has been exposed to ultraviolet radiation (UVA) long-wave and a half (UVB). The study, conducted in vitro in the laboratory, is published in the Journal of Agricultural and Food Chemistry.
Uva sunscreen
These Polyphenolic fractions inhibit the generation of the ERO, and therefore also the consequent activation of enzymes JNK and p38, so exert a protective effect against ultraviolet radiation from the Sun ”, stresses to SINC Marta Cascante, biochemistry of the University of Barcelona and Director of the work.
Researchers have detected the ability the flavanoles sunblock is greater when they present a greater degree of polymerization and galoización (training of Gallic acid compounds).
The study points out that these results encouraging ” should take them into account the clinical pharmacology who works with extracts Polyphenolic of vegetable origin for the development of new agents of cutaneous photoprotection.
Currently already sold cosmetics and medications with compounds of grape, but so far it is not well known how acting on cells. This work supports the use of these products to protect the skin from damage and cell death caused by solar radiation, in addition to contribute knowledge about its mechanism of action ”, concludes Cascante.
Bibliographic references:
Cecilia Matito, Neus Agell, Susana Sanchez-Tena, Josep l. Torres, Marta Cascante. Protective Effect of Structurally Diverse Grape Procyanidin Fractions against UV-Induced Cell Damage and Death ”. Journal of Agricultural and Food Chemistry 59 (9): 4489 – 4495, may 2011. DOI: 10.1021/jf103692a.
