{"title":"梗阻性肾盂肾炎致腐生葡萄球菌菌血症1例。","authors":"Kyoko Yoshida , Naoki Okawa , Tsuyama Nobuaki , Yoshihito Otsuka , Naoto Hosokawa","doi":"10.1016/j.jiac.2025.102629","DOIUrl":null,"url":null,"abstract":"<div><div>Herein, we present the case of a 64-year-old woman diagnosed with left calculous pyelonephritis. Gram-positive cocci in clusters were isolated from two sets of her blood culture. These cocci were later identified as <em>Staphylococcus saprophyticus.</em></div><div>Although <em>S. saprophyticus</em> is a common causative pathogen of urinary tract infection (UTI) among young women, coagulase-negative staphylococci including <em>S. saprophyticus</em> isolated from UTI patients’ blood samples were often considered a result of contamination because of their rareness. Considering the high percentage of methicillin-resistant strains of <em>S. saprophyticus</em>, accurate strain identification and antimicrobial susceptibility testing are necessary to detect true bacteremia and its appropriate treatment.</div></div>","PeriodicalId":16103,"journal":{"name":"Journal of Infection and Chemotherapy","volume":"31 4","pages":"Article 102629"},"PeriodicalIF":1.5000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A case of Staphylococcus saprophyticus bacteremia caused by obstructive pyelonephritis\",\"authors\":\"Kyoko Yoshida , Naoki Okawa , Tsuyama Nobuaki , Yoshihito Otsuka , Naoto Hosokawa\",\"doi\":\"10.1016/j.jiac.2025.102629\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Herein, we present the case of a 64-year-old woman diagnosed with left calculous pyelonephritis. Gram-positive cocci in clusters were isolated from two sets of her blood culture. These cocci were later identified as <em>Staphylococcus saprophyticus.</em></div><div>Although <em>S. saprophyticus</em> is a common causative pathogen of urinary tract infection (UTI) among young women, coagulase-negative staphylococci including <em>S. saprophyticus</em> isolated from UTI patients’ blood samples were often considered a result of contamination because of their rareness. Considering the high percentage of methicillin-resistant strains of <em>S. saprophyticus</em>, accurate strain identification and antimicrobial susceptibility testing are necessary to detect true bacteremia and its appropriate treatment.</div></div>\",\"PeriodicalId\":16103,\"journal\":{\"name\":\"Journal of Infection and Chemotherapy\",\"volume\":\"31 4\",\"pages\":\"Article 102629\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2025-04-01\",\"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/S1341321X2500025X\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/20 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"INFECTIOUS DISEASES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Infection and Chemotherapy","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1341321X2500025X","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/20 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
A case of Staphylococcus saprophyticus bacteremia caused by obstructive pyelonephritis
Herein, we present the case of a 64-year-old woman diagnosed with left calculous pyelonephritis. Gram-positive cocci in clusters were isolated from two sets of her blood culture. These cocci were later identified as Staphylococcus saprophyticus.
Although S. saprophyticus is a common causative pathogen of urinary tract infection (UTI) among young women, coagulase-negative staphylococci including S. saprophyticus isolated from UTI patients’ blood samples were often considered a result of contamination because of their rareness. Considering the high percentage of methicillin-resistant strains of S. saprophyticus, accurate strain identification and antimicrobial susceptibility testing are necessary to detect true bacteremia and its appropriate treatment.
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.