Abstract Title:

Momordica charantia polysaccharides ameliorate oxidative stress, inflammation, and apoptosis in ethanol-induced gastritis in mucosa through NF-kB signaling pathway inhibition.

Abstract Source:

Int J Biol Macromol. 2018 May ;111:193-199. Epub 2018 Jan 4. PMID: 29307809

Abstract Author(s):

Mohammad Raish, Ajaz Ahmad, Mushtaq Ahmad Ansari, Khalid M Alkharfy, Fahad I Aljenoobi, Basit L Jan, Abdullah M Al-Mohizea, Altaf Khan, Naushad Ali

Article Affiliation:

Mohammad Raish


This study investigated the therapeutic role of polysaccharides from M. charantia and their mechanism of action against ethanol-induced gastric ulcers in rats. Their effects were determined through macroscopic evaluation of the gastric cavity (gastric ulcer index [GUI]), changes in PGE, lipid peroxidation (malondialdehyde), antioxidant systems (catalase and reduced glutathione), inflammatory markers (tumor necrosis factor-α [TNF-α], interleukin-6 [IL-6], and myeloperoxidase [MPO]), apoptotic markers (caspase 3, Bax, and Bcl-2), nuclear factor-κB (NF-κB [p65]), and histopathological staining (H&E and PAS). Pretreatment with MCP (300mg/kg p.o.) attenuated the severity of ethanol-induced gastric mucosal damage, reductions in GUI, histopathologic aberrations, and neutrophil invasion, and PGEupregulation. These actions were similar to those of omeprazole, a reference anti-ulcer drug. MCP repressed gastric inflammation through the reduction of MPO, TNF-α, and IL-6, and prevented gastric oxidative stress through the inhibition of lipid peroxides with the concomitant enhancement of glutathione and catalase activity. Apoptotic markers indicated that MCP suppressed Bax and caspase-3 activity and enhanced the anti-apoptotic protein Bcl-2, which favored cell survival. MCP downregulated NF-κB and upregulated IκBα. Our study results suggested that the prophylactic administration of MCP reduced ethanol-induced gastric injury in rats through the suppression of gastric inflammation and oxidative stress, predominantly via NF-κB inhibition.

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