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[Effect of beta-adrenoreceptor blockade on the filtration-absorption function of the vascular bed of the skeletal musculature of the cat].

Perfusion of the cat hindlimb with alternating stabilization of pressure and blood flow in response to electrical stimulation of sympathetic fibers prior to and after blockade of beta-adrenoreceptors decreased considerably changes of the capillary filtration coefficient and the capillary hydrostatic pressure, improving changes of the filtration-absorption balance induced with the stimulation. beta-Adrenoreceptors of vascular bed are shown to take part in neurogenic regulation of both the exchange and the capacitance functions of the vascular bed, as well as its resistance function. Activation of sympathetic fibers seems to enhance permeability of the vascular wall.