Aging is a progressive process associated with the decline of both cell structure and function, involving oxidative stress as well as mitochondrial dysfunction. However, strategies to delay the aging process have become a research hotspot that an increasing number of researchers are focusing on. This study aimed to explore the protective effect of pretreatment of Astragalus membranaceus (AM) injection at five Zang-organ Shu acupoints in D-galactose (D-gal)–induced aging rats.
Methods
The rats received acupoint injections of the five Zang-organ Shu acupoints [Feishu (BL 13), Xinshu (BL 15), Ganshu (BL 18), Pishu (BL 20), and Shenshu (BL 23)] with AM injection prior to intraperitoneal injection of D-gal. Organ indexes, biochemical serum parameters, histopathological morphology, and aging-related protein levels of the brain and kidney tissues were used to evaluate the oxidative alterations induced by D-gal and the protective role of AM injection.
Results
AM injection improved organ indexes, biochemical serum parameters, and the pathological damage of the brain and kidney tissues. Primary mechanism analysis showed that AM injection decreased the expression of aging markers (p53 and p16) in the hippocampus of aging rats. Furthermore, AM injection significantly decreased malondialdehyde (MDA) levels and increased superoxide dismutase (SOD) activity, enhancing the antioxidant status.
Conclusion
Pretreatment of AM injection at five Zang-organ Shu acupoints ameliorates oxidative stress induced by D-gal in the rats through downregulation of aging markers (p53 and p16), a decrease in SOD activity, and an increase in MDA content.
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