Unravelling staphylococcal small-colony variants in cardiac implantable electronic device infections: clinical characteristics, management, and genomic insights.

Autor:	Liu S; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China., Chen H; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China., Xu F; Department of Clinical Laboratory, Urumqi Friendship Hospital, Urumqi, China., Chen F; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China., Yin Y; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China., Zhang X; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China., Tu S; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China., Wang H; Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.
Jazyk:	angličtina
Zdroj:	Frontiers in cellular and infection microbiology [Front Cell Infect Microbiol] 2024 Jan 08; Vol. 13, pp. 1321626. Date of Electronic Publication: 2024 Jan 08 (Print Publication: 2023).
DOI:	10.3389/fcimb.2023.1321626
Abstrakt:	Objectives: Staphylococcal small-colony variants (SCVs) are common in cardiac implantable electronic device (CIED) infections. This is the first retrospective and multi-case study on CIED infections due to staphylococcal SCVs, aiming to provide a theoretical basis for the clinical management of CIED and device-related infections caused by staphylococcal SCVs. Methods: Ninety patients with culture positive CIED infections were enrolled between 2021 and 2022. We compared the demographic and clinical characteristics of patients with and without SCVs and performed genomic studies on SCVs isolates. Results: Compared to patients without SCVs, those with SCVs had a longer primary pacemaker implantation time and were more likely to have a history of device replacement and infection. They showed upregulated inflammatory indicators, especially higher NEUT% (52.6 vs. 26.8%, P = 0.032) and they had longer hospital stays (median 13 vs. 12 days, P = 0.012). Comparative genomics analysis was performed on Staphylococcus epidermidis wild-type and SCVs. Some genes were identified, including aap , genes encoding adhesin, CHAP domain-containing protein, LPXTG cell wall anchor domain-containing protein, and YSIRK-type signal peptide-containing protein. Conclusion: Staphylococcal SCVs affect the clinical characteristics of CIED infections. The process of staphylococcal SCVs adherence, biofilm formation, and interaction with neutrophils play a vital role. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2024 Liu, Chen, Xu, Chen, Yin, Zhang, Tu and Wang.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu