Ginsenoside Rg3 induces apoptosis and inhibits proliferation by down-regulating TIGAR in rats with gastric precancerous lesions

作者：Shangbin Lv, Xiaodong Chen, Yu Chen, Daoyin Gong, Gang Mao, Caifei Shen, Ting Xia, Jing Cheng, Zhaoliang Luo, Yu Cheng, Weihong Li, Jinhao Zeng · 发表于：BMC Complementary Medicine and Therapies · 年份：2022 · DOI：10.1186/s12906-022-03669-z · 被引用次数：29 · 研究领域：Ginseng Biological Effects and Applications、Traditional Chinese Medicine Analysis、Phytochemistry and biological activity of medicinal plants

BACKGROUND: Ginsenoside Rg3 (GRg3) is one of the main active ingredients in Chinese ginseng extract and has various biological effects, such as immune-enhancing, antitumour, antiangiogenic, immunomodulatory and anti-inflammatory effects. This study aimed to investigate the therapeutic effect of GRg3 on gastric precancerous lesion (GPL) induced by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and the potential mechanism of action. METHODS: The MNNG-ammonia composite modelling method was used to establish a rat model of GPL. Histopathological changes in the rat gastric mucosa were observed by pathological analysis using haematoxylin-eosin staining to assess the success rate of the composite modelling method. Alcian blue-periodic acid Schiff staining was used to observe intestinal metaplasia in the rat gastric mucosa. Apoptosis was detected in rat gastric mucosal cells by terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling staining. The production level of reactive oxygen species (ROS) was determined by the dihydroethidium fluorescent probe method, and that of TP53-induced glycolysis and apoptosis regulator (TIGAR) protein was determined by immunohistochemical staining and western blotting. The production levels of nicotinamide adenine dinucleotide phosphate (NADP) and glucose-6-phosphate dehydrogenase (G6PDH) were determined by an enzyme-linked immunosorbent assay, and that of glutathione (GSH) was determined by microanalysis. RESULTS: GRg3 significantly allevi...