Brain Material Basis and Relevant Mechanism of Acute Stroke Treated with Rhei Radix et Rhizoma Based on Homotherapy for Heteropathy Using Proteomics / 中国实验方剂学杂志

ABSTRACT

Objective:To explore the material basis and mechanism of acute stroke treated with Rhei Radix et Rhizoma based on Homotherapy for Heteropathy using the analysis of proteomics and bioinformatics. Method:A total of 60 male Sprague-Dawley（SD）rats were randomly divided into ischemic stroke（IS） sham-operation group (Sham1), IS model group (IS), IS+ Rhei Radix et Rhizoma treatment group (DH1)，ICH sham-operation group (Sham2), intracerebral hemorrhage（ICH） model group (ICH), and ICH + Rhei Radix et Rhizoma treatment group (DH2), with 10 rats in each group. After cerebral perfusion, the brain tissues were quantified by proteomic analysis, and differentially expressed proteins (DEPs) were identified. Specimens of IS, Sham1, and DH1 groups were collected at 24 hours, while those of ICH, Sham2, and DH2 groups were collected at 48 hours. The common DEPs were analyzed by bioinformatics, and the relevant DEPs were verified by Western blot. Result:Rhei Radix et Rhizoma regulated 21 common DEPs associated with acute stroke (including 12 up-regulated and 9 down-regulated). According to Kyoto Encyclopedia of Genes and Genomes（KEGG） analysis, amyotrophic lateral sclerosis (ALS) pathway was enriched, and three proteins [Neurofilament light polypeptide (Nefl), Neurofilament medium polypeptide (Nefm), Neurofilament heavy polypeptide (Nefh)] involved in this pathway. Energy metabolism, ion homeostasis, regulation of synaptophysin, cell cycle and neurogenesis were the common mechanisms of "Homotherapy for Heteropathy". After treatment with Rhei Radix et Rhizoma, the expression levels of GTP binding protein REM2 (Rem2), tyrosine 3-monooxygena (Th), Nefl and neuromodulin (Gap43) were significantly higher than those of the corresponding model group (P<0.05). The expression of Nefl was down-regulated, while the expressions of Rem2，Th and Gap43 were up-regulated, which was consistent with the results of proteomics. Conclusion:Rhei Radix et Rhizoma-homotherapy-differential protein expression profile is established is study. Energy metabolism, ion homeostasis, regulation of synaptophysin, cell cycle and neurogenesis are the common mechanisms.