武汉地区门诊皮肤软组织感染患者中甲氧西林敏感金黄色葡萄球菌 PVL基因携带及耐药性检测  被引量:5

Prevalence of Panton-Valentine leukocidin genes and antimicrobic resistance in Staphylococcus aureus isolates from outpatients with skin and soft-tissue infections in Wuhan city

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作  者:刘小丽[1] 王斌[1] 江元山[2] 梁建生[1] 袁红[3] 张丽华[4] 周燕飞 许慧琼[1] 

机构地区:[1]武汉市疾病预防控制中心消毒与病媒生物防制所,430015 [2]武汉市疾病预防控制中心病原生物检测所,430015 [3]武汉市第一医院护理部 [4]黄陂区人民医院医院感染管理科 [5]武汉市第五医院医院感染管理科

出  处:《中华皮肤科杂志》2016年第3期172-175,共4页Chinese Journal of Dermatology

基  金:武汉市卫生局公共卫生科研项目(WG12D03) 志谢 感染项目组所有工作人员的辛勤付出,武汉市疾病预防控制中心熊燕主任、陈智副主任技师,江汉区万松街社区卫生服务中心杨志兵主任、江岸区西马街社区卫生服务中心夏志忠主任、江汉区疾病预防控制中心刘建龙科长、江岸区疾病预防控制中心丁晓红副主任、黄陂区疾病预防控制中心韩墨主任在项目实施过程中的支持与帮助

摘  要:目的:探讨从武汉地区门诊皮肤软组织感染(SSTI)患者中分离的甲氧西林敏感金黄色葡萄球菌(MSSA)携带杀白细胞毒素(PVL)基因及耐药特征。方法收集2011—2013年在武汉市5所医疗机构门诊就诊 SSTI 患者中分离的182株 MSSA,采用纸片扩散法进行药敏试验,多重 PCR 法检测 mecA 基因和 PVL 基因。结果182株 MSSA 中有65株 PVL 阳性,阳性率为35.71%。不同病种 PVL 阳性率差异有统计学意义(χ^2=49.76,P =0.00),其中疖/痈(7/7)、毛囊炎(3/3)、脓肿(55.53%,30/57)和脓疱疮(2/4)的检出率较高。PVL 阳性患者年龄[(35.40±19.31)岁]小于 PVL 阴性患者[(43.21±20.75)岁],差异有统计学意义(t =2.50,P =0.01)。在65株 PVL 阳性 MSSA 菌株中,耐药率居前3位的依次是氨苄西林(87.69%)、青霉素(53.85%)、红霉素(41.54%)。在117株 PVL 阴性 MSSA 菌株中,耐药率居前3位的依次是克林霉素(26.50%)、青霉素(20.51%)、氨苄西林(12.82%)。PVL 阳性 MSSA 菌株对青霉素(χ^2=21.19)、氨苄西林(χ^2=97.97)、多西环素(χ^2=11.61)、环丙沙星(χ^2=8.07)、红霉素(χ^2=25.04)、庆大霉素(χ^2=10.86)的耐药率高于 PVL 阴性 MSSA 菌株,差异均有统计学意义(P 〈0.05)。结论武汉地区门诊 MSSA SSTI 患者中,PVL 阳性率较高,对大多数β内酰胺类抗菌药物耐药,经验治疗可选择氟氯西林、复方磺胺甲唑片或多西环素。Objective ToestimatetheprevalenceofPanton-Valentineleukocidin (PVL)genes and antimicrobial resistance in methicillin-sensitive Staphylococcus aureus (MSSA)isolateds from outpatients with skin and soft-tissue infections (SSTIs)in Wuhan city. Methods A total of 182 MSSA isolates were collected from outpatients with SSTIs in 5 different hospitals in Wuhan city between 2011 and 2013. The Kirby-Bauer′s disk diffusion method was used to evaluate antimicrobial susceptibility of the MSSA isolates, and multiplex PCR was performed to detect mecA and PVL genes in these isolates. Results Of the 182 MSSA isolates, 65 (35.71%)carried PVL genes. The positive rate of PVL genes was significantly different among patients with different diseases (χ^2 = 49.76, P = 0.00), and relatively higher in patients with furuncles/carbuncles(7/7), folliculitis(3/3), abscesses(55.53%, 30/57)or impetigo(2/4). The age of patients with PVL-positive MSSA infection was significantly younger than that with PVL-negative MSSA infection (35.40 ± 19.31 years vs. 43.21 ± 20.75 years,t = 2.50, P = 0.01). Among 65 PVL-positive MSSA isolates, the rate of resistance to clindamycin was highest (87.69%), followed by that to penicillin(53.85%)and erythromycin(41.54%). The frequency of resistance to clindamycin was highest in 117 PVL-negative MSSA isolates, followed by that to penicillin (20.51%)and ampicillin (12.82%). Furthermore, there was a significant increase in the rate of resistance to penicillin(χ^2 = 21.19), ampicillin(χ^2 = 97.97), doxycycline(χ^2 =11.61), ciprofloxacin(χ 2 = 8.07), erythromycin(χ 2 = 25.04)and gentamicin(χ 2 = 10.86)in PVL-positive MSSA isolates compared with PVL-negative MSSA isolates (all P 〈 0.05). Conclusions MSSA isolates from outpatients with SSTIs in Wuhan city are resistant to most β-lactam antibiotics. Flucloxacillin, compound sulfamethoxazole tablets or doxycycline is recommended for empirical treatment of PVL-positive MSSA i

关 键 词:软组织感染 金黄色葡萄球菌 微生物敏感性试验 杀白细胞毒素 PVL 基因 

分 类 号:R751[医药卫生—皮肤病学与性病学]

 

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