[Ramatroban (Baynas): a review of its pharmacological and clinical profile].
Bayer has been interested in the observations that metabolites of arachidonic acid are involved in allergy and inflammation. Ramatroban was thus developed as a therapeutic agent for allergic and inflammatory diseases. Ramatroban showed an antagonistic action on the thromboxane A2 (TXA2) receptor in in vitro experiments using platelets or arteries. It inhibited the permeability of capillary and also the infiltration of eosinophils in nasal mucosa. Ramatroban had an inhibitory effect on the nasal resistance stimulated by either U-46619 or antigen challenge in in vivo experiments. The concentration of nasal TXA2 was increased when the antigen was challenged to allergic patients. Clinical trials demonstrated that ramatroban decreased sneezing, rhinorrhea, and rhinostenosis in patients enrolled in the study. No serious adverse reaction of ramatroban was observed in patients throughout the trials. The treatment with ramatroban is safe and improves nasal symptoms.
Motobayashi
Y
Y
Marketing and Product Development, Bayer Yakuhin, Ltd., Miyahara, Yodogawa-ku, Osaka 532-8577, Japan.
Imagawa
W
W
Saida
K
K
D019796:15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid / Q000037:antagonists & inhibitors; D000403:Airway Resistance / Q000187:drug effects; D000818:Animals; D002199:Capillary Permeability / Q000187:drug effects; D002227:Carbazoles / Q000494:pharmacology / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D006801:Humans; D009296:Nasal Cavity / Q000503:physiopathology; D009297:Nasal Mucosa / Q000503:physiopathology; D015508:Nasal Obstruction / Q000188:drug therapy; D017482:Receptors, Thromboxane / Q000037:antagonists & inhibitors* / Q000378:metabolism; D012221:Rhinitis, Allergic, Perennial / Q000188:drug therapy; D013449:Sulfonamides / Q000494:pharmacology / Q000627:therapeutic use
D002227:Carbazoles; D017482:Receptors, Thromboxane; D013449:Sulfonamides; D019796:15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid; C063119:ramatroban