G. P. Levy
University of Hertfordshire
16 Papers
626 Citations
G. P. Levy is an academic researcher from University of Hertfordshire. The author has contributed to research in topics: Labetalol & Agonist. The author has an hindex of 11, co-authored 16 publications.
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Papers
Receptors for 5-hydroxytryptamine and noradrenaline in rabbit isolated ear artery and aorta.
TL;DR: It is concluded that 5‐HT and noradrenaline act directly at α‐receptorors to produce vasoconstriction in the ear artery and that this preparation does not contain specific 5‐ HT‐receptors.
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Evidence for two types of excitatory receptor for 5-hydroxytryptamine in dog isolated vasculature
TL;DR: The results are consistent with the hypothesis that there are two types of receptor mediating 5‐HT‐induced vasoconstriction in dog vasculature, and one of these is like the previously described ‘D‐receptor’.
142
A non‐adrenergic inhibitory nervous pathway in guinea‐pig trachea
R.A. Coleman,G. P. Levy +1 more
TL;DR: It is concluded that electrical stimulation of the guinea‐pig trachea, in addition to activating cholinergic and adrenergic nervous pathways, may activate a separate and distinct inhibitory nervous pathway.
THE α‐ AND β‐ADRENOCEPTOR BLOCKING POTENCIES OF LABETALOL AND ITS INDIVIDUAL STEREOISOMERS IN ANAESTHETIZED DOGS AND IN ISOLATED TISSUES
TL;DR: It is concluded that, although most of the α1‐adrenoceptor blocking activity of labetalol is attributable to the SR stereoisomer, each of the stereoisomers contributes to the overall pharmacological profile of labedalol.
107
SELECTIVITY OF β-ADRENOCEPTOR AGONISTS AND ANTAGONISTS ON BRONCHIAL, SKELETAL, VASCULAR AND CARDIAC MUSCLE IN THE ANAESTHETIZED CAT
TL;DR: It is suggested that it may not be possible to separate the bronchodilating and tremor‐enhancing properties of β‐adrenoceptor agonists and propranolol was 10–12 times more potent on the heart than on bronchial muscle, soleus muscle and blood pressure and very slightly lower on theheart.