[Role of alpha- and beta-adrenoreceptors in the formation of shifts in the vascular function of the intestine during acute cooling of the body].
The 1st phase of acute cooling of cats from 37 degrees C to 25 degrees C characterized by an increase of the integral, pre- and postcapillary resistance of the small intestine vascular bed as well as the capillary pressure, revealed a greater role of the alpha-adrenoreceptors in the resistance, capacitance and exchange functions of the vascular bed, whereas the 2nd phase with its diminishing of the above parameters involved rather the beta-adrenoreceptors of the vessels. Blockade of the beta-adrenoreceptors led to a greater reduction of capillary filtration coefficient. Adrenergic mechanisms of the vascular functions control in hypothermia, are discussed.
D000818:Animals; D001794:Blood Pressure; D001808:Blood Vessels / Q000294:innervation*; D002199:Capillary Permeability; D002415:Cats; D004548:Elasticity; D005260:Female; D007036:Hypothermia, Induced; D007421:Intestine, Small / Q000098:blood supply*; D008297:Male; D011941:Receptors, Adrenergic / Q000502:physiology*; D014655:Vascular Resistance; D014680:Veins / Q000502:physiology
D011941:Receptors, Adrenergic
Rol' al'fa- i beta-adrenoretseptorov v formirovanii sdvigov sosudistykh funktsiĭ kishechnika pri ostrom okhlazhdenii organizma.