Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study

Abstract Background Increasing macrolide resistance makes treatment of Mycoplasma genitalium infections challenging. The second-line treatment is moxifloxacin, an antibiotic drug best avoided due to the potential of severe side effects and interactions. This study evaluates the effects of treatment...

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Main Authors: M. Gossé, S. A. Nordbø, B. Pukstad
Format: Article
Language:English
Published: BMC 2021-12-01
Series:BMC Infectious Diseases
Subjects:
Online Access:https://doi.org/10.1186/s12879-021-06910-1
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author M. Gossé
S. A. Nordbø
B. Pukstad
author_facet M. Gossé
S. A. Nordbø
B. Pukstad
author_sort M. Gossé
collection DOAJ
description Abstract Background Increasing macrolide resistance makes treatment of Mycoplasma genitalium infections challenging. The second-line treatment is moxifloxacin, an antibiotic drug best avoided due to the potential of severe side effects and interactions. This study evaluates the effects of treatment with doxycycline 100 mg twice daily for 2 weeks as an alternative to moxifloxacin. Methods This retrospective observational study examined the medical records of patients testing positive for macrolide resistant Mycoplasma genitalium from January 1st, 2016 to September 1st, 2019 in Trondheim, Norway. Information regarding symptoms as well as clinical and microbiological cure was collected. Results 263 infections from 259 patients (161 females/98 males) were examined. 155 (58.9%) had a negative test of cure following treatment. 34.7% of symptomatic patients not achieving microbiological cure experienced symptom relief or clearance. There was no statistical difference between bacterial loads in symptomatic versus asymptomatic patients. The mean difference was 1.6 × 105 copies/ml (95% CI − 1.4 × 105–4.8 × 105, p = 0.30) for women and 1.4 × 106 copies/ml (95% CI -4.0 × 105–3.2 × 106, p = 0.12) for men. Conclusions The cure rate of doxycycline in this study is higher than previously reported. This adds support to doxycycline’s role in treatment before initiating treatment with less favorable drugs such as moxifloxacin.
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spelling doaj.art-efd5fd6c6d664f49be3165fb5a03ba1b2022-12-21T23:41:04ZengBMCBMC Infectious Diseases1471-23342021-12-012111710.1186/s12879-021-06910-1Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational studyM. Gossé0S. A. Nordbø1B. Pukstad2Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyDepartment of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyDepartment of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyAbstract Background Increasing macrolide resistance makes treatment of Mycoplasma genitalium infections challenging. The second-line treatment is moxifloxacin, an antibiotic drug best avoided due to the potential of severe side effects and interactions. This study evaluates the effects of treatment with doxycycline 100 mg twice daily for 2 weeks as an alternative to moxifloxacin. Methods This retrospective observational study examined the medical records of patients testing positive for macrolide resistant Mycoplasma genitalium from January 1st, 2016 to September 1st, 2019 in Trondheim, Norway. Information regarding symptoms as well as clinical and microbiological cure was collected. Results 263 infections from 259 patients (161 females/98 males) were examined. 155 (58.9%) had a negative test of cure following treatment. 34.7% of symptomatic patients not achieving microbiological cure experienced symptom relief or clearance. There was no statistical difference between bacterial loads in symptomatic versus asymptomatic patients. The mean difference was 1.6 × 105 copies/ml (95% CI − 1.4 × 105–4.8 × 105, p = 0.30) for women and 1.4 × 106 copies/ml (95% CI -4.0 × 105–3.2 × 106, p = 0.12) for men. Conclusions The cure rate of doxycycline in this study is higher than previously reported. This adds support to doxycycline’s role in treatment before initiating treatment with less favorable drugs such as moxifloxacin.https://doi.org/10.1186/s12879-021-06910-1Mycoplasma genitaliumDoxycyclineDrug resistanceMacrolide resistance
spellingShingle M. Gossé
S. A. Nordbø
B. Pukstad
Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study
BMC Infectious Diseases
Mycoplasma genitalium
Doxycycline
Drug resistance
Macrolide resistance
title Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study
title_full Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study
title_fullStr Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study
title_full_unstemmed Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study
title_short Evaluation of treatment with two weeks of doxycycline on macrolide-resistant strains of Mycoplasma genitalium: a retrospective observational study
title_sort evaluation of treatment with two weeks of doxycycline on macrolide resistant strains of mycoplasma genitalium a retrospective observational study
topic Mycoplasma genitalium
Doxycycline
Drug resistance
Macrolide resistance
url https://doi.org/10.1186/s12879-021-06910-1
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