耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

耐甲氧西林金黄色葡萄球菌SCCmec基因分型及药敏分析

Objective To investigate the SCCmec genotyping, subtype and antimicrobial susceptibility tests in methicillin resistant staphylococcus aureus to guide the clinical treatment and provide the proof for molecular epidemiology. Methods To detect mecA gene and SCCmec genetyping and subtype in 50 MRSA by PCR. According to CLSI's guideline, antimicrobial susceptibility tests were performed with disk diffusion. Results All 50 MRSA had meeA genes. 45 strains were SCCmecⅢ types; 3 strains were SCCmecⅢA types;2 straius were SCCmec Ⅱ types. There were no SCCmec Ⅰ and SCCmecⅣ types. SCCmec Ⅱ ,SCCmecⅢ and SCCmecⅢ A type strains were all multiresistant. Conclusion 50 MRSA are all multiresistant. SCCmec Ⅲ are the main types.     

体内诱导耐碳青霉烯类鲍曼不动杆菌膜蛋白质组学研究

Objective To investigate the role of outer membrane protein in clinical isolated car-bapenem resistance Acinetobacter baumannii. Methods Carbapenem resistance and sensitive strains were collected from the same patient. After MIST and REP-PCR analysis, carbapenemases were detected by isoe-lectric focusing. Different expressed membrane proteins were identified by two-dimension electrophoresis and mass spectrometry analysis. We also used efflux pump inhibitor PAβN(Phe-Arg-β-naphthylamide) to con-firm the phenotype. Results Carbapenem resistance and sensitive strains were attributed to the same pat-tern. At positions of P17.6 and P19.0, two β-lactamases were expressed in two investigated strains, no cabapenemases were detected. Six differential expressed membrane proteins were identified, a 34 × 103 membrane protein that was confirmed by efflux pump inhibitor PAβN experiment (imiponem MIC decreased from far above 32 μg/ml to 8μ/ml) and OprD and CarO. Conclusion Up-regulation of exported protein accompanied with down-regulation of OprD and CarO other than carbaponemases are responsible for carbap-enem resistance in A. baumannii.