• Katsuhiro Ohyama and Munetoshi Sugiura.
• Center for Experiential Pharmacy Practice, School of Pharmacy, Tokyo University of Pharmacy and Life Science.
• Yakugaku Zasshi. 2018 Jan 1; 138 (4): 559-564.

Abstract　Prostaglandin F2α (PGF2α) analog formulations are the most commonly used drugs for glaucoma treatment. They are known to be superior to β-blockers for reducing intraocular pressure and can be effective all through the day. Because of the action, topical β-blockers are contraindicated for patients with bronchial asthma. PGF2α is also known to act as a constrictor of the respiratory tract. The present study aims to analyze the relationship between PGF2α analogs and asthma. In addition, we utilized β-blockers and combined formulations of both contents to evaluate for comparison with PGF2α analogs. Data from Japanese adverse drug event reports (JADERs) from April 2004 to January 2016 were used for analysis. The drugs of interest were 4 PGF2α analogs, 4 β-blockers, and 2 combined formulations of both. For quantitative signal detection, the reporting odds ratios (RORs) with Haldane-Anscombe 1/2 correction were calculated. The corrected RORs (95%CI) were detected to be 4.73 (2.30-9.75) for PGF2α analogs, 4.61 (1.82-11.7) for β-blockers, and 28.7 (12.1-68.1) for combined formulations. Our results suggest that not only topical β-blockers but also PGF2α analogs are associated with asthma, and the combined formulations have stronger associations with asthma than when administered alone. Therefore, further clinical research will be necessary, and careful attention should be paid to any glaucoma patient using PGF2α analogs for asthma symptoms.

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