title: A comparative study of the respiratory responses to bronchoactive agents in rhesus and cynomolgus monkeys.
abstract: Respiratory responses to a variety of known bronchoactive agents were compared in anesthetized rhesus (Macaca mulatta) and cynomolgus (Macaca fascicularis) monkeys. Administration of 0.1 to 1.0% histamine aerosols resulted in an increase in airway resistance of 50 to 200% and a decrease in lung compliance of 30 to 80%. Aerosols of prostaglandin E2 (1 mg/ml), terbutaline (10 mg/ml), and isoproterenol (10 mg/ml) or iv aminophylline (up to 7.0 mg/kg) administered concomitantly with histamine produced a transient reversal of the histamine-induced changes in both species. Since the rhesus and cynomolgus monkeys responded in a comparable manner to these bronchodilator agents, the cynomolgus monkey appears to be an additional valuable model for the evaluation of potential bronchoactive compounds.
mesh_terms: D000403:Airway Resistance / Q000187:drug effects; D000818:Animals; D001993:Bronchodilator Agents / Q000494:pharmacology*; D005260:Female; D006632:Histamine / Q000494:pharmacology; D008251:Macaca / Q000502:physiology*; D008252:Macaca fascicularis / Q000502:physiology*; D008253:Macaca mulatta / Q000502:physiology*; D008297:Male; D011458:Prostaglandins E / Q000494:pharmacology; D012119:Respiration / Q000187:drug effects*
chemical_list: D001993:Bronchodilator Agents; D011458:Prostaglandins E; D006632:Histamine