Influence of oral supplementation with sesamin on longevity of Caenorhabditis elegans and the host defense.
Purpose: Nutritional control has been proposed as a potential therapy for slowing the senescence of immune function and decreasing mortality. This study investigated whether sesamin could modify host defense systems and extend the lifespan of the nematode Caenorhabditis elegans. Methods: Nematodes w...
| Publicado en: | European Journal of Nutrition Vol. 53; no. 8; pp. 1659 - 1669 |
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| Autores principales: | , , , , , , , |
| Formato: | equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Springer Nature
Dec2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103919943&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103919943 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14366207 CR0 jtl: European Journal of Nutrition issn: 14366207 maglogo: N pubinfo: dt: Dec2014 vid: 53 iid: 8 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 103919943 99620619 10.1007/s00394-014-0671-6 NLM24549958 103919943 ppf: 1659 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Influence of oral supplementation with sesamin on longevity of Caenorhabditis elegans and the host defense. aug: au: Yaguchi, Yukie Komura, Tomomi Kashima, Noriko Tamura, Miho Kage-Nakadai, Eriko Saeki, Shigeru Terao, Keiji Nishikawa, Yoshikazu affil: Department of Food and Human Health Sciences, Graduate School of Human Life Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan sug: subj: Dietary Supplementation Longevity Drug Effects Immune System Physiology Seeds Plant Extracts Pharmacodynamics Lignans Pharmacodynamics Japan Funding Source In Vivo Studies Nematodes Movement Evaluation Comparative Studies Growth Evaluation Infection Prevention and Control Oxidative Stress Models, Statistical Kaplan-Meier Estimator Log-Rank Test T-Tests Mann-Whitney U Test Kruskal-Wallis Test P-Value Descriptive Statistics Body Size ab: Purpose: Nutritional control has been proposed as a potential therapy for slowing the senescence of immune function and decreasing mortality. This study investigated whether sesamin could modify host defense systems and extend the lifespan of the nematode Caenorhabditis elegans. Methods: Nematodes were fed standard food (the bacterium Escherichia coli strain OP50) supplemented with various doses of sesamin/γ-cyclodextrin inclusion compounds starting from young adulthood. The mean lifespan, muscle function, lipofuscin accumulation, protein carbonyl content, and stress resistance of the worms were examined. Then, C. elegans mutants harboring loss-of-function lesions in longevity- and host defense-related signaling pathways were supplemented with sesamin to identify the genes involved in the longevity effects. Results: Worms supplemented with sesamin displayed higher locomotion and prolongevity and produced offspring at levels similar to unsupplemented control animals. The growth curves of nematodes were similar to those of controls, suggesting that sesamin did not induce prolongevity effects through dietary restriction. Notably, sesamin made the worms more resistant to infection by Legionella pneumophila and more resistant to oxidative stressors such as paraquat and hydrogen peroxide and prolonged the lifespan of a mev- 1 mutant that produces abundant superoxide anions. However, the accumulation of protein carbonyls and lipofuscin was similar in sesamin-exposed and control worms, suggesting that sesamin is unlikely to work simply as an antioxidant. Sesamin supplementation failed to extend the lifespan of loss-of-function mutants of daf-2, daf- 16, pmk- 1, and skn- 1. Conclusions: Sesamin enhances the host defense of C. elegans and increases the average lifespan via activation of both skn- 1 (encoding a component of the p38 MAPK pathway) and daf- 16 (encoding a component of the IGF-1 pathway). pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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