Effect of mupirocin in Helicobacter pylori in vitro
1 Department of Bacteriology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
2 Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
3 Department of Molecular Bacteriology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Research Article
GSC Advanced Research and Reviews, 2021, 08(01), 160–165.
Article DOI: 10.30574/gscarr.2021.8.1.0154
Publication history:
Received on 18 June 2021; revised on 22 July 2021; accepted on 24 July 2021
Abstract:
Mupirocin (MUP) is an effective antibiotic against MRSA. Its bactericidal effect is stable under acid condition. By validating its antibacterial effect of Helicobacter pylori, we try to clarify MUP effect on H. pylori. The present study was conducted to investigate the effect of MUP on clarithromycin (CLR) / metronidazole (MNZ) -resistant and -susceptible strains of H. pylori, the time-kill effect of MUP, and the post antibiotic effect (PAE). We investigated the minimal inhibitory concentration (MIC) and the minimal bactericidal effect (MBC) of MUP against 140 H. pylori, which include clinical strains, ATCC43504, 26695 and J99. Ten of them were CLR -resistant strains and 3 were MNZ-resistant strains. The MIC90 and MBC of MUP on all 140 strains is 0.064 μg / ml, and 0.1 μg / ml, respectively. There were no differences of MUP effect between susceptible and resistant strains either for CLR or MNZ. Time-kill curve test and PAE test of MUP on ATCC43504 were performed. By adding MUP, time-kill curve showed that bacterial quantities decreased in dose and time-dependent manner. No viable colony was found after 12-hour culture with 0.1 μg / ml MUP. The value of PAE is 12. MUP is a potential effective antibiotic for H. pylori even those for CLR / MNZ -resistant strains.
Keywords:
Helicobacter pylori; Mupirocin; Time-kill curve; Electron microscopy; Postantibiotic effect
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