Rajivgandhi Govindan Nadar, Alharbi Naiyf S, Kadaikunnan Shine, Khaled Jamal M, Kanisha Chelliah Chenthis, Ramachandran Govindan, Manoharan Natesan, Alanzi Khalid F
Department of Marine Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India.
Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Saudi J Biol Sci. 2021 Mar;28(3):1750-1756. doi: 10.1016/j.sjbs.2020.12.016. Epub 2020 Dec 29.
The multi-drug resistant effect of the Gram negative bacteria K. pneumoniae was identified by disc diffusion method using specific UTI panel discs of Kleb 1 HX077 and Kleb 2 HX090 HEXA. Among the multi-drug resistant bacteria, the carbapenem resistant (CR) effect of the K. pneumoniae was screened by specific carbapenem detection antibiotics of HEXA HX066 and HX0103 HEXA by disc diffusion method. In addition, the effective antibiotics were further performed against K. pneumoniae by minimum inhibition concentration method. Further, the carbapenemase genes of VIM 1 and IMP 1 were detected from the isolated strains by multiplex PCR method. Furthermore, the biofilm forming ability of selected carbapenem resistant K. pneumoniae was initially identified by tissue culture plate method and confirmed by exopolysaccharide arrest ability of congo red agar assay. Finally, our result was proved that the identified K. pneumoniae is carbapenemase producing strain, and its virulence was extended with strong biofilm formation.
采用含有Kleb 1 HX077和Kleb 2 HX090 HEXA的特定泌尿道感染检测平板,通过纸片扩散法鉴定革兰氏阴性菌肺炎克雷伯菌的多重耐药性。在多重耐药菌中,通过纸片扩散法,使用HEXA HX066和HEXA HX0103等特定碳青霉烯检测抗生素筛选肺炎克雷伯菌的耐碳青霉烯(CR)效应。此外,通过最低抑菌浓度法进一步检测有效抗生素对肺炎克雷伯菌的作用。进一步地,采用多重PCR法从分离菌株中检测VIM 1和IMP 1碳青霉烯酶基因。此外,首先通过组织培养板法初步鉴定所选耐碳青霉烯肺炎克雷伯菌的生物膜形成能力,并通过刚果红琼脂试验的胞外多糖抑制能力进行确认。最后,我们的结果证明所鉴定的肺炎克雷伯菌是产碳青霉烯酶菌株,并且其毒力随着强大的生物膜形成而增强。