title: Sesamin extends the mean lifespan of fruit flies.
abstract: The present study investigated the anti-ageing activity of sesamin and its effect on gene expression of superoxide dismutase (SOD), catalase (CAT), methuselah (Mth) and Rpn11 in Drosophila melanogaster. Results demonstrated that 0.2 % sesamin in diet prolonged the mean lifespan of OR wild fruit flies by 12 %, accompanied by up-regulation of SOD1, SOD2, CAT and Rpn11. Sesamin at 0.2 % in diet also attenuated paraquat-induced neurodegeneration with up-regulation of SOD1, SOD2 and Rpn11 in OR wild fruit flies. Supplementation of 0.2 % sesamin in diet increased the survival time of OR wild type flies and Alzheimer flies Aβ42 33769 when they were challenged with paraquat. Furthermore, sesamin-induced increase in the activity and expression of antioxidant enzymes also suggests that the longevity promoting activity of sesamin are possibly due to its action as a hormetin by inducing oxidative stress response-mediated hormesis. It was concluded that sesamin extended the mean lifespan and alleviated the neurodegeneration in Drosophila melanogaster at least mediated by its interaction with genes SOD1, SOD2, CAT, and Rpn11, but not with gene Mth.
authors.affiliation: Food and Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zuo
authors.forename: Cheng
authors.initials: C
authors.lastname: Peng
authors.forename: Yintong
authors.initials: Y
authors.lastname: Liang
authors.forename: Ka Ying
authors.initials: KY
authors.lastname: Ma
authors.forename: Ho Yin Edwin
authors.initials: HY
authors.lastname: Chan
authors.forename: Yu
authors.initials: Y
authors.lastname: Huang
authors.forename: Zhen-Yu
authors.initials: ZY
authors.lastname: Chen
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000008:administration & dosage / Q000494:pharmacology*; D002374:Catalase / Q000235:genetics / Q000378:metabolism; D019587:Dietary Supplements; D004149:Dioxoles / Q000008:administration & dosage / Q000494:pharmacology*; D004330:Drosophila / Q000145:classification / Q000187:drug effects* / Q000502:physiology*; D029721:Drosophila Proteins / Q000235:genetics / Q000378:metabolism; D010450:Endopeptidases / Q000235:genetics / Q000378:metabolism; D005786:Gene Expression Regulation / Q000187:drug effects; D006540:Herbicides / Q000494:pharmacology; D017705:Lignans / Q000008:administration & dosage / Q000494:pharmacology*; D008136:Longevity / Q000187:drug effects / Q000502:physiology; D008297:Male; D023421:Models, Animal; D010269:Paraquat / Q000494:pharmacology; D013482:Superoxide Dismutase / Q000235:genetics / Q000378:metabolism
chemical_list: D000975:Antioxidants; D004149:Dioxoles; D029721:Drosophila Proteins; D006540:Herbicides; D017705:Lignans; D002374:Catalase; D013482:Superoxide Dismutase; D010450:Endopeptidases; C570797:Rpn11 protein, Drosophila; D010269:Paraquat; C054125:sesamin