title: Comparative efficacies of ciprofloxacin, ampicillin and chloramphenicol in treatment of experimental Haemophilus influenzae pneumonia.
abstract: An experimental murine model of bacteraemic Haemophilus influenzae pneumonia was used to evaluate the therapeutic efficacy of ciprofloxacin, as compared with ampicillin and chloramphenicol. An ampicillin-sensitive (AS) and an ampicillin-resistant (AR) challenge strain were employed. Ciprofloxacin treatment produced intrapulmonary killing of H. influenzae which was superior to that achieved with ampicillin (P less than 0.001, both strains) and chloramphenicol (P less than 0.001, strain AS; P less than 0.005, strain AR). Likewise, survival from strain AS pneumonia was 61% in the ciprofloxacin-treated animals, as compared with 43% for the chloramphenicol-treated, and 22% for the ampicillin-treated groups. We conclude that ciprofloxacin may be an effective agent in treating pneumonia caused by either ampicillin-sensitive or ampicillin-resistant strains of H. influenzae.
mesh_terms: D000667:Ampicillin / Q000627:therapeutic use; D000818:Animals; D002701:Chloramphenicol / Q000627:therapeutic use; D002939:Ciprofloxacin / Q000627:therapeutic use*; D005260:Female; D006192:Haemophilus Infections / Q000188:drug therapy* / Q000378:metabolism; D006193:Haemophilus influenzae / Q000187:drug effects; D008168:Lung / Q000378:metabolism; D008297:Male; D051379:Mice; D011014:Pneumonia / Q000188:drug therapy* / Q000209:etiology / Q000378:metabolism
chemical_list: D002939:Ciprofloxacin; D002701:Chloramphenicol; D000667:Ampicillin