首页|某院精神科住院患者艰难梭菌定植的分子流行病学特征

某院精神科住院患者艰难梭菌定植的分子流行病学特征

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目的 研究精神科住院患者艰难梭菌定植的分子流行病学特征,并探讨定植的相关因素.方法 于2020年6月1日至9月30日期间,收集丽水市第二人民医院精神科住院患者的粪便样本.分离培养艰难梭菌,并进行毒素基因鉴定、多位点序列分型和抗生素敏感性试验.结合患者的临床资料,分析艰难梭菌定植的相关因素.结果 共收集粪便样本442份,分离到24株(5.4％)艰难梭菌.其中,20株为TcdA和TcdB毒素基因阳性、二元毒素基因阴性(A+B+CDT-),3株为A-B+CDT-,1株为A+B+CDT+.共鉴定出14种序列分型(ST),包括1株高毒力ST11型.所有菌株对甲硝唑、万古霉素、利福平和哌拉西林敏感,但对环丙沙星(95.8％)、克林霉素(87.5％)和红霉素(62.5％)的耐药率较高.二元Logistic回归分析结果显示,在不同科室中,年龄(≥60岁)、住院天数(＞200 d)和服用劳拉西泮片与老年精神科患者艰难梭菌定植具有显著相关性(OR=3.762～15.556,P＜0.05),而住院天数(＞20 d)与早期干预科患者艰难梭菌定植具有显著相关性(OR=0.004,P＜0.001).结论 研究发现精神科住院患者存在5.4％的艰难梭菌定植率,年龄较大、住院天数较长且长期服用精神治疗性药物的患者与艰难梭菌定植间存在相关性,需加强院内感染防控监测进而遏制艰难梭菌在精神科的暴发和传播.
Molecular epidemiological characteristics of Clostridioides difficile colonization in psychiatric inpatients in a hospital
Objective To investigate the molecular epidemiology of Clostridioides difficile colonization(CDC)in psychiatric inpatients and explore the associated factors.Methods Stool samples were collected from psychiatric inpatients in Lishui Second People's Hospital between June 1 and September 30,2020.C.difficile was cultured and analyzed for toxin gene identification,multilocus sequence typing,and antimicrobial resistance.Associated factors for CDC were analyzed according to patients'clinical data.Results Out of 442 stool samples,24(5.4％)C.difficile isolates were obtained.Among them,20 isolates were identified as TcdA and TcdB positive and binary toxin genes negative(A+B+CDT-),three as A-B+CDT-,and one as A+B+CDT+.Fourteen sequence types(ST)were identified,including one hypervirulent ST11.All isolates were susceptible to metronidazole,vancomycin,rifampin,and piperacillin,but exhibited high resistance rates to ciprofloxacin(95.8％),clindamycin(87.5％),and erythromycin(62.5％).Binary logistic regression results showed that in different departments,age(≥60 years),length of hospital stays(＞200 days),and lorazepam usage were significantly associated with CDC(OR=3.762～15.556,P＜0.05).In contrast,there was a significant association between length of hospital stays(＞20 days)and CDC(OR=0.004,P＜0.001).Conclusion The study revealed a 5.4％colonization rate among psychiatric inpatients.There is a correlation between older age,prolonged hospitalization,and long-term usage of psychotropic medications with CDC.Monitoring and controlling nosocomial infection should be enforced to prevent the outbreak and transmission of C.difficile in this hospital.

Clostridioides difficile colonizationPsychiatry departmentMolecular characteristicsAssociated factors

王玲、林珊、黄益花、段慈东、田梦伦、沈宇航、宋小军、陈毓、赵龙友、金大智

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丽水市第二人民医院,丽水 323020

南开大学泰达生物技术研究院,天津 300457

杭州医学院检验医学院,生物工程学院,杭州 310053

杭州师范大学基础医学院,杭州 311121

浙江省生物标志物与体外诊断转化重点实验室,杭州 310063

浙江省人民医院杭州医学院附属人民医院检验中心,杭州 310014

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艰难梭菌定植 精神科 分子特征 相关因素

国家自然科学基金浙江省自然科学基金重点项目杭州医学院基础科研项目杭州医学院基础科研项目浙江省医药卫生科技计划丽水市重点研发计划

82372299LXZ22H300001KYZD202004KYYB20230032019KY2522017ZDYF15

2024

中国抗生素杂志
中国医药集团总公司四川抗菌素工业研究所,中国医学科学院医药生物技术研究所

中国抗生素杂志

CSTPCD北大核心
影响因子：1.08
ISSN：1001-8689
年,卷(期)：2024.49(5)
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