Journal of Antimicrobial Chemotherapy (1996) 37, 987-991
© 1996 The British Society for Antimicrobial Chemotherapy
brief-report |
Interaction of macrolides with adornase during DNA hydrolysis
aLaboratoire de Microbiologie, Hôpital Saint-Louis I avenue Claude Vellefaux, 75010 Paris, France bService de Pediatrie, Centre Hospitalier Inter communal 40 avenue de Verdun, 94010 Creteil, France c Pfizer, 86 rue de Paris, 91407 Orsay, France
Received 3 July 1995; returned 30 October 1995; accepted 11 January 1996
Since patients with cystic fibrosis are often treated with adornase to reduce sputum viscosity, and because of preliminary reports of efficacy of long-term low-dose erythromycin therapy in chronic airway diseases, it is likely that adornase and macrolides might be given together in such patients. A possible interaction between these drugs was therefore investigated. Using hyperchromic effect to quantify adornase activity, a time- and dose-dependent inhibitory effect on human DNA hydrolysis has been observed for erythromycin, roxithromycin and azithromycin. Inhibitory doses 50% for adornase were graphically determined. Azithromycin exhibited the strongest inhibitory effect.
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