Antiaging agents: safe interventions to slow aging and healthy life span extension

Human longevity has increased dramatically during the past century.More than 20%of the 9 billion population of the world will exceed the age of 60 in 2050.Since the last three decades,some interventions and many preclinical studies have been found to show slowing aging and increasing the healthy lifespan of organisms from yeast,flies,rodents to nonhuman primates.The interventions are classified into two groups:lifestyle modifications and pharmacological/genetic manipulations.Some genetic pathways have been characterized to have a specific role in controlling aging and lifespan.Thus,all genes in the pathways are potential antiaging targets.Currently,many antiaging compounds target the calorie-restriction mimetic,autophagy induction,and putative enhancement of cell regeneration,epige-netic modulation of gene activity such as inhibition of histone deacetylases and DNA methyltransferases,are under development.It appears evident that the exploration of new targets for these antiaging agents based on biogeron-tological research provides an incredible opportunity for the healthcare and pharmaceutical industries.The present review focus on the properties of slow aging and healthy life span extension of natural products from various biologi-cal resources,endogenous substances,drugs,and synthetic compounds,as well as the mechanisms of targets for antiaging evaluation.These bioactive compounds that could benefit healthy aging and the potential role of life span extension are discussed.

Antioxidant and antiaging effect of traditional Thai rejuvenation medicines in Caenorhabditis elegans

Objective: This study explored the rejuvenation mechanisms of Thai polyherbal medicines using different approaches, including in vitro methods, as well as a well-defined nematode model, Caenorhabditis elegans.Methods: THP-R-SR012 decoction was selected from 23 polyherbal medicines, based on metal-chelating and chain-breaking antioxidant capacities. The influences of this extract on the survival and some stress biomarkers of C. elegans under paraquat-induced oxidative stress were evaluated. Furthermore, lifespan analysis and levels of lipofuscin accumulation were examined in senescent nematodes. The phytochemical profile of THP-R-SR012 was analyzed.Results: Supplementation with THP-R-SR012 decoction significantly increased the mean lifespan and reduced the oxidative damage to C. elegans under oxidative stress conditions. Further, THP-R-SR012 supplementation slightly influenced the lifespan and the level of lipofuscin accumulation during adulthood.Antioxidant-related phytochemical constituents of THP-R-SR012 decoction were rutin, naringenin, 3,4-dihydroxybenzoic acid, gallic acid, glycyrrhizic acid, demethoxycurcumin and 18 a-glycyrrhetinic acid.Conclusion: The antioxidant potential of THP-R-SR012 was due to its scavenging properties, its enhancement of antioxidant-related enzyme activities, and the presence of the antioxidant-related compound.These results support the traditional use of THP-R-SR012 decoction as a tonic for nourishing and strengthening the whole body.