Resumen de Salvianolic Acid B Inhibits High‐Fat Diet‐Induced Inflammation by Activating the Nrf2 Pathway
Bin Wang, Jin Sun, Yonghui Shi, Guowei Le
Salvianolic acid B (Sal B) is a major water‐soluble bioactive component of Salvia miltiorrhiza, which is a traditional Chinese medicine. We investigated the ways in which Sal B affects high‐fat diet (HFD)‐induced immunological function disorder remission using a C57BL/6 mouse model. We gave groups of C57BL/6 mice a normal diet (Control), a normal diet supplemented with Sal B (Control + Sal B), a high‐fat diet (HF), and a high‐fat diet supplemented with Sal B (HF + Sal B) for 10 wk. Sal B supplementation decreased the body weight and plasma lipids, increased the fecal excretion of lipids, prevented the accumulation of chronic oxidative stress, and reversed the disproportionality of CD3+CD4+and CD3+CD8+T lymphocytes compared to HFD. We found an increase in IL‐6 and TNF‐α, while IL‐10 decreased in plasma after the HFD and Sal B reversed the deregulation of the Thl/Th2 ratio. In addition, HFD‐induced inflammation was stopped by Sal B through the downregulation of nuclear factor‐κB (NF‐κB), cyclooxygenase‐2 (COX‐2), and inducible NO synthesis (iNOS), and the upregulation of nuclear factor‐erythroid 2‐related factor 2 (Nrf2)‐regulated genes. These findings demonstrated that Sal B could effectively attenuate inflammation by activating the Nrf2‐mediated antioxidant defense system. Salvia miltiorrhiza, known as “danshen” in Chinese, is a healthy food additive. Salvianolic acid B, an active pharmaceutical compound present in Salvia miltiorrhiza, has been used to cure ischemic heart disease and cerebrovascular disease. In our study, salvianolic acid B could effectively attenuate high‐fat diet‐induced chronic inflammation by activating the Nrf2‐mediated antioxidant defense system. Consequently, the results provide an underlying therapeutic strategy for attenuating the inflammatory response with the supplementation of salvianolic acid B.
