Abstract
Objectives
Mastitis is mainly caused by Gram-positive bacteria and usually involves treatment with beta-lactam antibiotics and clindamycin. Oxazolidinones show good results in the treatment of skin and soft tissue infections (SSTIs) due to its pharmacokinetic characteristics. We aimed to describe clinical characteristics and outcomes of patients who received oxazolidinones for the treatment of SSTIs of the mammary tissue.
Methods
Retrospective single-centre study of patients with a diagnosis of breast infection who received treatment with oxazolidinones as initial or salvage therapy between September 2016 and November 2022. Patients were identified through the pharmacy database. The primary outcome was clinical cure.
Results
Twenty-nine patients received oxazolidinones: 27 received linezolid and 2 tedizolid. Median age was 41 years (IQR 31.0–56.5) and 28 patients were female. Ten patients (35%) had a history of breast cancer, while three (10%) had an immunosuppressive condition. Microbiological isolation was obtained in 24 individuals (83%). Predominant isolations were methicillin-resistant Staphylococcus aureus (8, 28%) and methicillin-susceptible S. aureus (7, 24%). Twenty-four patients (83%) received oxazolidinones as a salvage therapy, with a median duration of 14 days (IQR 10–17). Clinical cure was achieved in 24 patients (83%), while 4 relapsed after a median of 15 days (IQR 4–34). One was lost to follow-up. Three patients (10%) were taking selective serotonin reuptake inhibitors, and one of them concurrently received linezolid for 4 days with no adverse events recorded. Cytopenia during treatment was observed in 2/12 individuals. Oxazolidinones allowed hospital discharge in 11/13 hospitalized patients.
Conclusions
Oxazolidinones could be considered as an alternative for treating breast infections.
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Data availability
Anonymized data supporting the current study’s findings are available for any qualified investigator upon reasonable request to the corresponding author.
References
Contreras GA, Rodriguez JM. Mastitis: comparative etiology and epidemiology. J Mammary Gland Biol Neoplasia. 2011;16:339–56. https://doi.org/10.1007/s10911-011-9234-0.
Kvist LJ, Larsson BW, Hall-Lord ML, Steen A, Schalen C. The role of bacteria in lactational mastitis and some considerations of the use of antibiotic treatment. Int Breastfeed J. 2008;3:6. https://doi.org/10.1186/1746-4358-3-6.
Louis-Jacques AF, Berwick M, Mitchell KB. Risk factors, symptoms, and treatment of lactational mastitis. JAMA. 2023;329:588–9. https://doi.org/10.1001/jama.2023.0004.
Righi E, Carnelutti A, Bassetti M. Current role of oxazolidinones and lipoglycopeptides in skin and soft tissue infections. Curr Opin Infect Dis. 2019;32:123–9. https://doi.org/10.1097/QCO.0000000000000529.
Crotty MP, Krekel T, Burnham CA, Ritchie DJ. New gram-positive agents: the next generation of oxazolidinones and lipoglycopeptides. J Clin Microbiol. 2016;54:2225–32. https://doi.org/10.1128/JCM.03395-15.
Rowe HE, Felkins K, Cooper SD, Hale TW. Transfer of linezolid into breast milk. J Hum Lact. 2014;30:410–2. https://doi.org/10.1177/0890334414546045.
Linezolid. BMNIoCHaHD-. Drugs and Lactation Database (LactMed®) [Internet]. 2020 [Available from: https://www.ncbi.nlm.nih.gov/books/NBK501700/. Accessed 12 Dec 2023.
(FDA) UFaDA. SIVEXTRO 2019 [Available from: https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/205436s005lbl.pdf. Accessed 12 Dec 2023.
(FDA) UFaDA. ZYVOX 2013 [Available from: https://www.accessdata.fda.gov/drugsatfda_docs/label/2014/021130s032,021131s026,021132s031lbl.pdf. Accessed 12 Dec 2023.
Stevens DL, Smith LG, Bruss JB, McConnell-Martin MA, Duvall SE, Todd WM, et al. Randomized comparison of linezolid (PNU-100766) versus oxacillin-dicloxacillin for treatment of complicated skin and soft tissue infections. Antimicrob Agents Chemother. 2000;44:3408–13. https://doi.org/10.1128/AAC.44.12.3408-3413.2000.
Yue J, Dong BR, Yang M, Chen X, Wu T, Liu GJ. Linezolid versus vancomycin for skin and soft tissue infections. Cochrane Database Syst Rev. 2016;2016:CD008056. https://doi.org/10.1002/14651858.CD008056.pub3.
McKinnon PS, Sorensen SV, Liu LZ, Itani KM. Impact of linezolid on economic outcomes and determinants of cost in a clinical trial evaluating patients with MRSA complicated skin and soft-tissue infections. Ann Pharmacother. 2006;40:1017–23. https://doi.org/10.1345/aph.1G728.
Vazquez JA, Arnold AC, Swanson RN, Biswas P, Bassetti M. Safety of long-term use of linezolid: results of an open-label study. Ther Clin Risk Manag. 2016;12:1347–54. https://doi.org/10.2147/TCRM.S109444.
Lv X, Alder J, Li L, O’Riordan W, Rybak MJ, Ye H, et al. Efficacy and safety of tedizolid phosphate versus linezolid in a randomized phase 3 trial in patients with acute bacterial skin and skin structure infection. Antimicrob Agents Chemother. 2019. https://doi.org/10.1128/AAC.02252-18.
Elbarbry F, Moshirian N. Linezolid-associated serotonin toxicity: a systematic review. Eur J Clin Pharmacol. 2023;79:875–83. https://doi.org/10.1007/s00228-023-03500-9.
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CK and NFH: contributed to the conception and design of the study. CJPT, CMC, SCB and JRD: contributed to the acquisition and analysis of data and provided statistical advice on the study. CK: drafted the manuscript and prepared the figures and tables with significant contributions from CJPT, CMC, SCB, JRD and NFH. All authors reviewed and edited the earlier draft of this article and approved the final version of the same.
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This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Vall d’Hebron Research Institute Ethics Committee [registration code EOM(AG)030/2023(6143)].
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Kirkegaard, C., Parramón-Teixidó, C.J., Morales-Comas, C. et al. Use of oxazolidinones (linezolid or tedizolid) for the treatment of breast infections. A case series from a tertiary referral hospital. Infection (2024). https://doi.org/10.1007/s15010-024-02269-y
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DOI: https://doi.org/10.1007/s15010-024-02269-y