ABSTRACT
BACKGROUND: Like that of other Asian countries gastric cancer (GC) is also a leading cancer in Bangladesh and also a cause for cancer-related mortality. Infection with Helicobacter pylori (H. pylori) is the strongest recognized risk factor for gastric adenocarcinoma. The infection is also prevalent in common people. This case-control study was carried out to find an association between GC and H. pylori infection in the community. MATERIALS AND METHODS: To evaluate association of H. pylori and carcinoma of stomach this study was conducted at National Institute of Cancer Research & Hospital, Dhaka from January 2013 to December 2014. H. pylori status was determined serologically by using H. pylori kit in the department of Biochemistry laboratory of Bangabandhu Sheikh Mujib Medical University. In total, 114 patients with GC and 520 patients not having GC were studied as controls. Logistic regression method was used to calculate the odds ratio. RESULTS: Significantly more patients in the case group (86.8%) were found to be seropositive for H. pylori antigen in contrast to the control group (67.5%). All of the cases in the present study were in advanced stage. No significant association between H. pylori seropositivity and tumor location was found. It was noted that undifferentiated gastric carcinoma had slightly more association with H. pylori infection. Younger H. pylori-infected patients had been found to be at higher relative risk for GC than older patients. CONCLUSION: As there is a strong association found between GC and H. pylori infection special emphasis to eradicate H. pylori infection might reduce the incidence of this dreadly disease.
ABSTRACT
An integrate of pUB110 carrying aadD and blmS genes conferring resistance to 4'-OH containing aminoglycosides and bleomycin, respectively, is found in the Staphylococcal conjugative plasmid pSK41 and in the mec chromosomal region. In this study, we found an integrated copy of pSK41 in the chromosome of an arbekacin-resistant MRSA strain, K-1, clinically isolated in Japan. This is the first report of the chromosomal integration of this large plasmid in MRSA. Analysis of the nucleotide sequence and restriction map revealed a complete homology of the blmS-containing region of the integrate to wild type pSK41, except for the deletion of aadD and a part of the repU gene. In addition, we have discovered an insertion of IS1182 within the pSK41 integrate. Pulse-field gel electrophoresis-Southern analysis showed that the integration occurred outside the mec region. We also found that deletion of aadD resulted in an aberration of blmS transcription.
