[Interaction of dl-mandelamidine (Olimidine) with some antihypertensive drugs expressed in the blood pressure of conscious rats].
Hypotensive effect of dl-Mandelamidine (Olmidine, MA) in combination with some established antihypertensive drugs was studied in conscious normotensive rats. The mean blood pressure and heart rate were measured by means of a pressure transducer via a polyethylene tube inserted into the abdominal aorta of rat according to the method described by Weeks. The results obtained were as follows; 1) The hypotensive effects of guanethidine and hydrochlorothiazide were enhanced in combination with MA. 2) The hypotensive effect of reserpine was reduced by MA. 3) The hypotensive effects of clonidine, C6, propranolol and hydralazine were uneffected by MA. On the other hand, changes in heart rate induced by reserpine and C6 were increased by MA, however, those induced by guanethidine, clonidine propranolol and hydralazine were decreased by MA. The slight decrease in heart rate induced by hydrochlorothiazide was uneffected by MA. In view of our data, it is considered important that investigation of the interaction of antihypertensive drugs be done using conscious animals, as these drugs will be clinically prescribed.
D000319:Adrenergic beta-Antagonists / Q000494:pharmacology; D000578:Amidines / Q000494:pharmacology*; D000818:Animals; D000959:Antihypertensive Agents / Q000494:pharmacology*; D001337:Autonomic Agents / Q000494:pharmacology; D001794:Blood Pressure / Q000187:drug effects*; D003000:Clonidine / Q000494:pharmacology; D004148:Dioxolanes / Q000494:pharmacology*; D004149:Dioxoles / Q000494:pharmacology*; D004232:Diuretics / Q000494:pharmacology; D004338:Drug Combinations; D004347:Drug Interactions; D006145:Guanethidine / Q000494:pharmacology; D006339:Heart Rate / Q000187:drug effects; D051381:Rats; D012110:Reserpine / Q000494:pharmacology; D013565:Sympatholytics / Q000494:pharmacology; D014665:Vasodilator Agents / Q000494:pharmacology
D000319:Adrenergic beta-Antagonists; D000578:Amidines; D000959:Antihypertensive Agents; D001337:Autonomic Agents; D004148:Dioxolanes; D004149:Dioxoles; D004232:Diuretics; D004338:Drug Combinations; D013565:Sympatholytics; D014665:Vasodilator Agents; C011495:olmidine; D012110:Reserpine; D003000:Clonidine; D006145:Guanethidine