نتایج جستجو برای: prejunctional
تعداد نتایج: 297 فیلتر نتایج به سال:
Prejunctional angiotensin II receptors. Facilitation of norepinephrine release in the human forearm.
Prejunctional M1 facilitory and M2 inhibitory muscarinic receptors mediate rat bladder contractility
The effects of endogenous and of exogenous norepinephrine were studied in isolated rings of canine left circumflex coronary artery and its first ventricular branch. Norepinephrine was released from adrenergic nerve endings by transmural electrical stimulation and by tyramine. In rings contracted with prostaglandin F2 alpha, transmural electrical stimulation resulted in frequency-dependent relax...
Bishai, John M., Luit Penninga, Roel Nijland, Rogier Meulenaar, Ciprian P. Gheorghe, Yu Zhao, John N. Buchholz, Lubo Zhang, and Lawrence D. Longo. Preand postjunctional 2-adrenergic receptors in fetal and adult ovine cerebral arteries. Am J Physiol Regulatory Integrative Comp Physiol 282: R1654–R1662, 2002; 10.1152/ajpregu. 00475.2001.—In ovine cerebral arteries, adrenergic-mediated vasoconstri...
Chronic (3-day) treatment with prazosin causes an increase in renal alpha 2-adrenergic receptor density and the relocation of renal tubular alpha 2-adrenergic receptors from extrajunctional to postjunctional sites. We investigated whether chronic prazosin treatment (2 mg/kg, i.p.) caused a functional alteration of other renal alpha 2-adrenergic receptors, using the isolated perfused rat kidney....
BACKGROUND Activation of the sympathetic nervous system has important prognostic implications in chronic heart failure. Nonselective versus selective beta-adrenergic receptor antagonists may have differential effects on norepinephrine release from nerve terminals mediated by prejunctional beta(2)-adrenergic receptors. METHODS AND RESULTS Thirty-six patients with chronic heart failure were ran...
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