title: Dietary antiaging phytochemicals and mechanisms associated with prolonged survival.
abstract: Aging is well-known an inevitable process that is influenced by genetic, lifestyle and environmental factors. However, the exact mechanisms underlying the aging process are not well understood. Increasing evidence shows that aging is highly associated with chronic increase in reactive oxygen species (ROS), accumulation of a low-grade proinflammatory phenotype and reduction in age-related autophagy, suggesting that these factors may play important roles in promoting aging. Indeed, reduction of ROS and low-grade inflammation and promotion of autophagy by calorie restriction or other dietary manipulation can extend lifespan in a wide spectrum of model organisms. Interestingly, recent studies show that some food-derived small molecules, also called phytochemicals, can extend lifespan in various animal species. In this paper, we review several recently identified potential antiaging phytochemicals that have been studied in cells, animals and humans and further highlight the cellular and molecular mechanisms underlying the antiaging actions by these molecules.
authors.affiliation: Department of Family and Consumer Sciences, Tennessee State University, Nashville, TN 37209, USA. Electronic address: hsi@tnstate.edu.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Si
authors.affiliation: Department of Human Nutrition, Foods and Exercise, College of Agriculture and Life Sciences, Virginia Tech, Blacksburg, VA 24061, USA. Electronic address: doliu@vt.edu.
authors.forename: Dongmin
authors.initials: D
authors.lastname: Liu
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage; D000975:Antioxidants / Q000008:administration & dosage; D001343:Autophagy; D031204:Caloric Restriction; D004032:Diet; D019587:Dietary Supplements; D019317:Evidence-Based Medicine; D006293:Health Promotion; D006801:Humans; D008136:Longevity; D018673:Nutrition Policy; D064209:Phytochemicals / Q000008:administration & dosage*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000975:Antioxidants; D064209:Phytochemicals
keywords: Aging; Autophagy; Calorie restriction; Inflammation; Phytochemicals; Reactive oxygen species
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