A systematic review and meta-analysis on the efficacy of carbapenems versus metronidazole combination therapy in patients infected with Bacteroides spp.
{"title":"A systematic review and meta-analysis on the efficacy of carbapenems versus metronidazole combination therapy in patients infected with Bacteroides spp.","authors":"Hideo Kato , Jun Hirai , Tomonori Takano , Yu Arakawa , Yuka Yamagishi , Hiroyuki Kunishima , Hiroshige Mikamo","doi":"10.1016/j.jiac.2025.102687","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div><em>Bacteroides</em> spp. are frequently detected in anaerobic infections, with a mortality rate of 50 % attributed to inadequate antimicrobial therapy. Recently, <em>Bacteroides</em> spp. have shown increased resistance to metronidazole (MNZ) and carbapenems. Therefore, identifying appropriate drugs for treating infections caused by <em>Bacteroides</em> spp. is necessary. Hence, this meta-analysis aimed to compare the clinical efficacy of combination therapy with MNZ versus carbapenems for the treatment of infections due to <em>Bacteroides</em> spp.</div></div><div><h3>Methods</h3><div>Scopus, EMBASE, PubMed, CINAHL, and Ichushi databases were searched for relevant articles that met the inclusion criteria through October 2024. Clinical efficacy was defined as the percentage of patients who achieved complete resolution or remarkable improvement in all signs and symptoms of the infection; therefore, no additional antibiotics or procedures were necessary, and the percentage of eradication of <em>Bacteroides</em> spp.</div></div><div><h3>Results</h3><div>Of the 482 citations identified for screening, five studies with a total of 306 patients were enrolled. All included studies were randomized clinical trials, two were open-label studies, and three were double-blind studies. All the included patients had intra-abdominal infections (IAIs). The combined therapy with MNZ was comparable with the carbapenem group in clinical efficacy in the treatment of infections due to <em>Bacteroides</em> spp. (risk rate 1.03, 95 % confidence interval 0.93–1.14).</div></div><div><h3>Conclusions</h3><div>Combined therapy with MNZ could be an effective treatment option for infections caused by <em>Bacteroides</em> spp., similar to carbapenems.</div></div>","PeriodicalId":16103,"journal":{"name":"Journal of Infection and Chemotherapy","volume":"31 5","pages":"Article 102687"},"PeriodicalIF":1.9000,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Infection and Chemotherapy","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1341321X25000844","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
引用次数: 0
Abstract
Background
Bacteroides spp. are frequently detected in anaerobic infections, with a mortality rate of 50 % attributed to inadequate antimicrobial therapy. Recently, Bacteroides spp. have shown increased resistance to metronidazole (MNZ) and carbapenems. Therefore, identifying appropriate drugs for treating infections caused by Bacteroides spp. is necessary. Hence, this meta-analysis aimed to compare the clinical efficacy of combination therapy with MNZ versus carbapenems for the treatment of infections due to Bacteroides spp.
Methods
Scopus, EMBASE, PubMed, CINAHL, and Ichushi databases were searched for relevant articles that met the inclusion criteria through October 2024. Clinical efficacy was defined as the percentage of patients who achieved complete resolution or remarkable improvement in all signs and symptoms of the infection; therefore, no additional antibiotics or procedures were necessary, and the percentage of eradication of Bacteroides spp.
Results
Of the 482 citations identified for screening, five studies with a total of 306 patients were enrolled. All included studies were randomized clinical trials, two were open-label studies, and three were double-blind studies. All the included patients had intra-abdominal infections (IAIs). The combined therapy with MNZ was comparable with the carbapenem group in clinical efficacy in the treatment of infections due to Bacteroides spp. (risk rate 1.03, 95 % confidence interval 0.93–1.14).
Conclusions
Combined therapy with MNZ could be an effective treatment option for infections caused by Bacteroides spp., similar to carbapenems.
期刊介绍:
The Journal of Infection and Chemotherapy (JIC) — official journal of the Japanese Society of Chemotherapy and The Japanese Association for Infectious Diseases — welcomes original papers, laboratory or clinical, as well as case reports, notes, committee reports, surveillance and guidelines from all parts of the world on all aspects of chemotherapy, covering the pathogenesis, diagnosis, treatment, and control of infection, including treatment with anticancer drugs. Experimental studies on animal models and pharmacokinetics, and reports on epidemiology and clinical trials are particularly welcome.