Experimental Studies on the Sugar Puncture. : Part 2. On the Origin of the Hyperglycaemia occuring after the Sugar Puncture

1. In the normal rabbits the intravenous application of adrenaline cause hyperglycaemie, but in rabbits which have been previously splanchniectomized on both sides, the adrenaline application always betrayed hyperglycaemia. 2. In the normal rabbits ergotoxine had no influence on the blood sugar content. Contrary to the normal animals, a rabbit which received previously an intravenous injection of ergotoxine by which the vasoconstriction of the blood vessels was made impossible, sugar puncture was not effected in the blood sugar content. 3. Contrary to the normal animals, in the rabbits which were treated previously with intravenous application of ergotoxine, the electrical stimulation of the basis of the brain did not cause hyperglycaemia. 4. By the perfusion of the liver of toad with Ringer solution, on adding of adrenaline in the perfusing liquid, discharge of the sugar in the perfusate was increased in percentage, but the absolute quantity was reduced on account of the reduction of the amount of perfusate. 5. The discharge of sugar from the perfusing liver of the toad, which was previously perfused sufficiently with ergotoxine-Ringer solution, on adding of adrenaline in the perfusing liquid showed no change compared with these without ergotoxine and adrenaline application. 6. The piqure-hyperglycaemia may be assumed as adrenaline-hyperglycaemia. The origin of adrenaline-hyperglycaemia is rather mechanical, since the torrent of blood stream is increased by the strong contraction of blood vessels of skin and muscles than those of liver, washing out the reserved sugar in liver.