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Retinoid
Group of tetraterpenes
1st, 2nd, 3rd-generation retinoid compounds.
The retinoids are a class of chemical compounds that are natural derivatives of vitamin A or are chemically related to it. Synthetic retinoids are utilized in cosmetic formulations, clinical dermatology, and the treatment of some forms of cancer.[1]
Retinoids have many important functions throughout the body, including in vision,[2] regulation of skin proliferation and differentiation, growth of bone tissue, immune function,[3] and male fertility.[4]
The biology of retinoids is complex, having well-documented effectiveness in the management of conditions ranging from acute promyelocytic leukemia to acne to photoaging.[5] On the other hand, retinoids may be involved in metabolic dysfunction and, at least in some forms, carcinogenesis.[6][7]
^Goodman GE, Thornquist MD, Balmes J, Cullen MR, Meyskens FL, Omenn GS, et al. (December 2004). "The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements". Journal of the National Cancer Institute. 96 (23): 1743–1750. doi:10.1093/jnci/djh320. PMID15572756.