PMID- 37996500 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20231220 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 Nov 23 TI - Intracellular and in vivo activities of oxazolidinone drugs against Mycobacterium avium complex infection. PG - 20631 LID - 10.1038/s41598-023-48001-y [doi] LID - 20631 AB - The prevalence of Mycobacterium avium complex-pulmonary disease (MAC-PD) has become a growing concern worldwide, and current treatments involving macrolides (clarithromycin [CLR] or azithromycin), ethambutol, and rifampicin have limited success, highlighting the need for better therapeutic strategies. Recently, oxazolidinone drugs have been identified as novel anti-tuberculosis drugs effective against drug-resistant M. tuberculosis. However, the effects of these drugs against MAC are still controversial due to limited data. Here, we first evaluated the intracellular anti-MAC activities of two oxazolidinone drugs, linezolid (LZD) and delpazolid (DZD), against 10 macrolide-susceptible MAC strains and one macrolide-resistant M. avium strain in murine bone marrow-derived macrophages (BMDMs) and found that both drugs demonstrated similar potential. The synergistic efficacies with CLR were then determined in a chronic progressive MAC-PD murine model by initiating a 4-week treatment at 8 weeks post-infection. Upon assessment of bacterial burdens and inflamed lesions, oxazolidinone drugs exhibited no anti-MAC effect, and there was no significant difference in the synergistic effect of CLR between LZD and DZD. These findings suggest that oxazolidinone drugs inhibit intracellular bacterial growth, even against macrolide-resistant MAC, but their clinical application requires further consideration. CI - (c) 2023. The Author(s). FAU - Lee, Ju Mi AU - Lee JM AD - Department of Microbiology, Institute for Immunology and Immunological Disease, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea. FAU - Kim, Lee-Han AU - Kim LH AD - Department of Microbiology, Institute for Immunology and Immunological Disease, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea. FAU - Kim, Su-Young AU - Kim SY AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. FAU - Jhun, Byung Woo AU - Jhun BW AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. FAU - Lee, Wonsik AU - Lee W AD - School of Pharmacy, Sungkyunkwan University, Suwon, South Korea. FAU - Shin, Sung Jae AU - Shin SJ AD - Department of Microbiology, Institute for Immunology and Immunological Disease, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea. sjshin@yuhs.ac. LA - eng GR - NRF-2020M3A9H5104234/Bio & Medical Technology Development Program of National Research Foundation of Korea/ PT - Journal Article DEP - 20231123 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Oxazolidinones) RN - 0 (Anti-Bacterial Agents) RN - 0 (Antitubercular Agents) RN - H1250JIK0A (Clarithromycin) RN - 0 (Macrolides) SB - IM MH - Humans MH - Mice MH - Animals MH - Mycobacterium avium Complex MH - *Mycobacterium avium-intracellulare Infection/drug therapy/microbiology MH - *Oxazolidinones/pharmacology/therapeutic use MH - Anti-Bacterial Agents/pharmacology MH - Antitubercular Agents/pharmacology MH - Clarithromycin/therapeutic use MH - Macrolides/pharmacology MH - *Lung Diseases/drug therapy PMC - PMC10667338 COIS- The authors declare no competing interests. EDAT- 2023/11/24 00:42 MHDA- 2023/11/27 12:42 PMCR- 2023/11/23 CRDT- 2023/11/23 23:29 PHST- 2023/07/11 00:00 [received] PHST- 2023/11/21 00:00 [accepted] PHST- 2023/11/27 12:42 [medline] PHST- 2023/11/24 00:42 [pubmed] PHST- 2023/11/23 23:29 [entrez] PHST- 2023/11/23 00:00 [pmc-release] AID - 10.1038/s41598-023-48001-y [pii] AID - 48001 [pii] AID - 10.1038/s41598-023-48001-y [doi] PST - epublish SO - Sci Rep. 2023 Nov 23;13(1):20631. doi: 10.1038/s41598-023-48001-y.