The acute reactions of human skin to solar ultraviolet radiation (290-400 nm) are recognized as a form of inflammation reactions that are mediated by several possible mechanisms including (a) direct action of photons on DNA, (b) generation of reactive free radicals and reactive oxygen species
Analgesic and antiinflammatory activity of proanthocyanidin isolated from Polypodium feei roots has been tested using acetic acid-induced writhing and carrageenan-induced paw edema methods, respectively. The compound at doses of 50 and 100 mg/kg significantly decreased writhing responses of mice
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