... of voluntary muscle appears to be relatively resistant to acute sympathetic adrenoreceptor blockade in man. bethanidine clonidine isometric exercise oxprenolol phenoxybenzamine phentolamine pressor response sympatholytic drugs © 1981 The Biochemical Society and the Medical Research Society 1981...

...-hypertensive effects of drugs like clonidine, α-methyldopa and β-receptor-blocking agents may be related to their long-term effects on presynaptic adrenoceptors. © 1976 The Biochemical Society and the Medical Research Society 1976 clonidine α-methyldopa phenoxybenzamine presynaptic receptors...

... renin secretion only in the presence of the alpha-receptor blocking agent phenoxybenzamine. This stimulatory effect was largely prevented by the addition of the beta-blocking agent, propranolol. The vasoconstrictor action of noradrenaline, and thus the rise in mean renal perfusion pressure...

... in the contralateral denervated kidney. Renal blood flow markedly decreases in the innervated, and remains unchanged in the denervated, kidney during pontine stimulation. 2. Blockade of the vasomotor response to pontine stimulation in one kidney by close arterial infusion of phenoxybenzamine does not reduce the renin...