1School of Life Science and Technology, Tongji University, Shanghai 200092, China 2Shenqi Institute for Ethnomedicine, Tongji University, Shanghai 200092, China 3School of Medicine, Tongji University, Shanghai 200092, China 4Shanghai Engineering Research Center for Model Organisms, SRMOC/SMOC, Shanghai 201203, China 5Standard Testing Lab (Shanghai) Co., Ltd., Pudong, Shanghai 201203, China
Liuwei Dihuang (LWDH), a famous traditional Chinese medicine, is widely used in the clinical treatment of aging-related diseases in China. However, its pharmacological mechanisms are not clear. In the present study, we evaluated the lifespan extension effect of LWDH in C. elegans and mice and revealed its underlying mechanisms. The results showed that LWDH significantly extended the lifespan of C. elegans in a dose-dependent manner. LWDH also conferred protection to nematodes against oxidative stress and reduced their fat storage. Genetics analysis and microarray data showed that the longevity effect of LWDH was attributed to the regulation of the innate immune response, proteolysis, lipid metabolism, and the oxidation-reduction process and was dependent on daf-16. Among the six herbs in the formula, Radix Rehmanniae Preparata and Fructus Macrocarpii contributed most to the longevity effect of this medicine, while the other four components had a synergistic effect on the longevity effect of the prescription. The lack of any single herb reduced the efficacy of the complete formula. LWDH also extended the lifespan and reduced both the weight and oxidant stress status in aged mice. Taken together, these results suggested that LWDH might function in a multi-target manner to extend the lifespan in both C. elegans and aged mice, and the best effect was achieved with the complete formula.
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