Efficacy of increasing dosages of clarithromycin for treatment of experimental Mycoplasma pneumoniae pneumonia
Articolo
Data di Pubblicazione:
2011
Citazione:
Efficacy of increasing dosages of clarithromycin for treatment of experimental Mycoplasma pneumoniae pneumonia / C. Tagliabue, C. Techasaensiri , J.P. Torres, K. Katz, C. Meek, T.R. Kannan, J.J. Coalson, S. Esposito, N. Principi, R. Leff, J.B. Baseman , R.D. Hardy. - In: JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY. - ISSN 0305-7453. - 66:10(2011), pp. dkr306.2323-dkr306.2329.
Abstract:
Objectives: Mycoplasma pneumoniae respiratory infection is a common cause of acute respiratory infection in children and adults. We evaluated the efficacy of increasing dosages of clarithromycin for the optimized therapy of M. pneumoniae respiratory infection in a mouse model. Methods: BALB/c mice were intranasally inoculated once with M. pneumoniae or SP4 broth (control). Groups of mice were treated with increasing dosages of clarithromycin (10, 25 or 75 mg/kg/day) or placebo subcutaneously daily. Groups of mice were evaluated after 1, 2, 3, 6 and 12 days of therapy. Outcome variables included quantitative M. pneumoniae culture, histopathological score of the lungs, bronchoalveolar lavage (BAL) cytokine/chemokine/growth factor concentrations and plethysmography after aerosolized methacholine to assess airway hyperresponsiveness. Results: Elevated dosages of clarithromycin resulted in greater antimicrobial efficacy with significantly reduced M. pneumoniae quantitative cultures (P < 0.05), as well as greater improvement in markers of disease severity with significantly reduced lung histopathology scores, BAL cytokine concentrations and airway hyperresponsiveness (P < 0.05). Conclusions: Escalated dosing of clarithromycin resulted in significantly greater therapeutic efficacy in the treatment of experimental M. pneumoniae respiratory infection.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
C. Tagliabue, C. Techasaensiri , J.P. Torres, K. Katz, C. Meek, T.R. Kannan, J.J. Coalson, S. Esposito, N. Principi, R. Leff, J.B. Baseman , R.D. Hardy
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