[Kinetic aspects of the glipizide-induced hypoglycemia in the dog (author's transl)].

The study of the kinetics of hypoglycemia induced by glipizide (second generation hypoglycemic sulfonamide) was carried out on the normal conscious dog. 1. In a first series of experiments glipizide was given intravenously at the dose of 0.1 mg .kg-1. The hypoglycemic effect of the drug occurred rapidly and reached a maximum at the 30th minute. This maximum effect did not much vary from one animal to another. The hypoglycemic action persisted at least 7 hours after the injection, and at the 24th hour blood glucose level returned practically to the initial values. 2. The kinetics of hypoglycemia after per os administration were studied when glipizide was given either in solid form preparation or in solution form. Glipizide given per os in powder form at the dose of 0.1 mg . kg-1 induced a kinetics of hypoglycemia which varied from one animal to another. The hypoglycemic effect which appeared within 1 to 4 hours after administration, reached its maximum within 2 to 6 hours; it ranged from -6 p. 100 to -52 p. 100. A tenfold higher dose (1 mg . kg-1) produced a hypoglycemia which occurred more rapidly, with less dispersion in the intensity of the response. When glipizide was given at the dose of 0.1 mg . kg-1 in solution form, it can be noted that in all cases hypoglycemia occurred earlier than after administration in powder form at the same dose, while the dispersion in the maximum effect is still considerable. These results lay stress once again on the importance of the form of administration on the kinetics of hypoglycemia and on its intensity.