[Hypertension by nerve section in adrenalectomized, hypophysectomized, thyroidectomized and splanchnectomized dogs or in dogs with diabetes insipidus].

In the dog under anesthesia by pentobarbital, the acute hypertension by depressor buffer nerves section does not develop after adrenalectomy, hypophysectomy or thyroïdectomy. But this type of acute pressor response does appear normal in the dog parathyroïdectomized, splanchnicectomized or with hypothalamic diabetes insipidus.

[Effect of practolol on experimental hypertension in dogs].

In the dog, the intra-venous injection of practolol (1 to 3 mg/kg) reduces the hypertension provoked by vagotomy and sino-aortic nerves section, or by intra-venous administration of potassium cyanide. But practolol differs from propranolol ; he does not modify hypertension observed after electrical stimulation of central end of saphene, laryngeal superior, or vagus nerf.

[Effect of some antidiuretic agents on the polyuria-polydipsia provoked by alcohol].

The authors have studied in the dog--normal or diabetic insipidus after hypothalamic lesion--submitted to oral ingestion of ethanol the effects of a few antidiuretic drug: chlorpropamid, atromid-S, carbamazepin and carisoprodol. The carisoprodol only can reduce the diuresis and the drinking provoked by ethanol.