In vivo fluid accumulation-inhibitory, anticolonization and anti-inflammatory and in vitro biofilm-inhibitory activities of methyl gallate isolated from Terminalia chebula against fluoroquinolones resistant Vibrio cholerae. (March 2019)

• Record Type: Journal Article
• Authors: Bag, Prasanta K.; Roy, Nivedita; Acharyya, Saurabh; Saha, Dhira R.; Koley, Hemanta; Sarkar, Prodipta; Bhowmik, Poulami
• Is Part Of: Microbial pathogenesis. Volume 128(2019)
• Page Start: 41
• Page End: 46
• Publication Date: 2019-03
• Subjects: Fluid accumulation-inhibitory activity -- Antiinflammatory activity -- Anti-Colonization activity -- Vibrio cholerae -- Multi-drug resistant -- Methyl gallate; Pathogenic microorganisms -- Periodicals; Pathology, Molecular -- Periodicals; Communicable Diseases -- microbiology -- Periodicals; Communicable Diseases -- parasitology -- Periodicals; Micro-organismes pathogènes -- Périodiques; Pathologie moléculaire -- Périodiques; Electronic journals; 616.9041
• DOI: 10.1016/j.micpath.2018.12.037
• Languages: English
• ISSNs: 0882-4010

Abstract

Abstract: Acute Vibrio cholerae infection triggers significant inflammatory response and immense fluid secretion in the intestine. In the present study, methyl gallate (MG) isolated from Terminalia chebula was evaluated to determine the in vivo fluid accumulation-inhibitory, anticolonization and anti-inflammatory and in vitro biofilm-inhibitory activities against multi-drug resistant (MDR) V. cholerae . Bacterial membrane-damaging and biofilm-inhibitory activities were determined by membrane perturbation and transmission electron microscopy (TEM); and microdilution assays, respectively. Fluid accumulation-inhibitory and anticolonization activities of MG (23.80–95.23 mg/kg body weight) were determined in 4–5 days old BALB/c mice with an incubation time of 18 h. The effect of MG (1, 50 and 500 mg/kg body weight) on intestinal inflammatory reaction induced by V. cholerae was studied by performing histology in Swiss albino mice. MIC and MBC of MG against the test strains were 32–64 and 64–256 μg/ml, respectively. MG showed the fluid accumulation-inhibitory activity with inhibition values of 42.86–89.08% at doses between 23.80 and 95.23 mg/kg body weight and significant anticolonization activity ( p < 0.0001) against V. choleare in the suckling mouse intestine. MG (500 mg/kg body weight) significantly inhibited the inflammatory reactions induced by V. cholerae compared to the vehicle control. MG exhibited 70% minimum biofilm inhibition concentration of 64 μg/ml and bacterial membrane damaging activity at 1 × MBC. The results obtained in the present study suggest that MG has potential as an effective agent for the treatment of severe secretory and inflammatory diarrheal disease caused by MDR V. cholerae. Graphical abstract: Image 1 Highlights: V. cholerae triggers significant inflammatory response and immense fluid secretion. Methyl gallate (MG) exhibited 70% minimum biofilm inhibition at MIC against V. cholerae. MG showed significant in vivo fluid accumulation-inhibitory and anticolonization activities against V. choleare. MG significantly inhibited the inflammatory reactions induced by V. cholerae.