Synergic effect of quinolone antibacterial agents and proton pump inhibitors on Helicobacter pylori.

1New Product Research Laboratories I, Daiichi Pharmaceutical Co. Ltd, 16-13 Kitakasai 1-Chome, Edogawa-ku, Tokyo 134-8630; 2Department of Preventive Dentistry, Health Sciences University of Hokkaido; 3Division of Animal Experimentation, Sapporo Medical University, Hokkaido; 4Department of Microbiology, Jichi Medical University, Tochigi; 5Hokkaido Institute of Technology and 6Third Department of Internal Medicine, Hokkaido University School of Medicine, Hokkaido, Japan