title: Caloric restriction, resveratrol and melatonin: Role of SIRT1 and implications for aging and related-diseases.
abstract: Aging is an inevitable and multifactorial biological process. Free radicals have been implicated in aging processes; it is hypothesized that they cause cumulative oxidative damage to crucial macromolecules and are responsible for failure of multiple physiological mechanisms. However, recent investigations have also suggested that free radicals can act as modulators of several signaling pathways such as those related to sirtuins. Caloric restriction is a non-genetic manipulation that extends lifespan of several species and improves healthspan; the belief that many of these benefits are due to the induction of sirtuins has led to the search for sirtuin activators, especially sirtuin 1, the most studied. Resveratrol, a polyphenol found in red grapes, was first known for its antioxidant and antifungal properties, and subsequently has been reported several biological effects, including the activation of sirtuins. Endogenously-produced melatonin, a powerful free radical scavenger, declines with age and its loss contributes to degenerative conditions of aging. Recently, it was reported that melatonin also activates sirtuins, in addition to other functions, such as regulator of circadian rhythms or anti-inflammatory properties. The fact that melatonin and resveratrol are present in various foods, exhibiting possible synergistic effects, suggests the use of dietary ingredients to promote health and longevity.
authors.affiliation: Laboratory of Neurophysiology, Department of Biology, University of the Balearic Islands, Palma, Spain. Electronic address: margarita.ramis@uib.es.
authors.forename: Margarita R
authors.initials: MR
authors.lastname: Ramis
authors.affiliation: Laboratory of Neurophysiology, Department of Biology, University of the Balearic Islands, Palma, Spain. Electronic address: susana.esteban@uib.es.
authors.forename: Susana
authors.initials: S
authors.lastname: Esteban
authors.affiliation: Laboratory of Neurophysiology, Department of Biology, University of the Balearic Islands, Palma, Spain. Electronic address: amiralles@uib.es.
authors.forename: Antonio
authors.initials: A
authors.lastname: Miralles
authors.affiliation: Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA. Electronic address: tan@uthscsa.edu.
authors.forename: Dun-Xian
authors.initials: DX
authors.lastname: Tan
authors.affiliation: Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA. Electronic address: REITER@uthscsa.edu.
authors.forename: Russel J
authors.initials: RJ
authors.lastname: Reiter
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000627:therapeutic use*; D031204:Caloric Restriction; D006801:Humans; D007249:Inflammation / Q000188:drug therapy / Q000378:metabolism; D008136:Longevity / Q000187:drug effects*; D008550:Melatonin / Q000378:metabolism*; D000077185:Resveratrol; D056564:Sirtuin 1 / Q000378:metabolism*; D013267:Stilbenes / Q000627:therapeutic use*
chemical_list: D000975:Antioxidants; D013267:Stilbenes; C447939:SIRT1 protein, human; D056564:Sirtuin 1; D008550:Melatonin; D000077185:Resveratrol
keywords: Aging; Caloric restriction; Melatonin; Resveratrol; Sirtuins