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Antimicrobial Agents and Chemotherapy, June 2000, p. 1761-1764, Vol. 44, No. 6
0066-4804/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Effect of Azithromycin plus Rifampin versus Amoxicillin Alone on Eradication and Inflammation in the Chronic Course of Chlamydia pneumoniae Pneumonitis in Mice

Xie Xiao Bin,1,dagger Katerina Wolf,1,Dagger Thomas Schaffner,2 and Raffaele Malinverni1,3,*

Department of Clinical Research,1 Institute for Pathology,2 and Medical Policlinic,3 Inselspital, University of Bern, Bern, Switzerland

Received 2 July 1999/Returned for modification 22 December 1999/Accepted 21 March 2000

The effects of treatment with azithromycin plus rifampin (A+R), amoxicillin (A), or placebo (P) on the chronic course of experimental Chlamydia pneumoniae pneumonitis in mice were assessed by culture, PCR, and immunocytochemistry as well as by degree of inflammation in lung tissue. Eradication of the pathogen was significantly more frequent and inflammation in tissue was significantly reduced after treatment with A+R compared to after treatment with A or P. Combination therapy with azithromycin plus rifampin showed favorable effects in the chronic course of C. pneumoniae pneumonitis.


* Corresponding author. Mailing address: Department of Medicine, Hôpital des Cadolles, 2000 Neuchâtel, Switzerland. Phone: 032 722 91 27. Fax: 032 722 96 58. E-mail: Raffaele.Malinverni{at}ne.ch.

dagger Present address: Abteilung für Pneumologie, Departement Innere Medizin, Universitätsspital, CH-8091 Zürich, Switzerland.

Dagger Present address: NIH/NIAID Rocky Mountain Labs, Hamilton, MT 59840.


Antimicrobial Agents and Chemotherapy, June 2000, p. 1761-1764, Vol. 44, No. 6
0066-4804/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.



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