Results 251 to 260 of about 653,806 (301)

Presynaptic muscarinic cholinergic receptors

Nature, 1978
IN the isolated rabbit heart, acetylcholine inhibits the release of noradrenaline evoked by nicotinic drugs1, by KCl (ref. 2) and by sympathetic nerve stimulation3. The release of noradrenaline in response to sympathetic nerve stimulation in the rabbit heart was found to be reduced by para-sympathomimetic agonists, and atropine antagonised this effect ...
V K, Sharma, S P, Banerjee
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Cholinergic receptors and neurodegenerative diseases

Pharmaceutica Acta Helvetiae, 2000
Publisher Summary This chapter focuses on cholinergic receptors and neurodegenerative diseases. Known as the “cholinergic hypothesis of Alzheimer's disease (AD),” this hypothesis has served as the main rationale for the development of anti-AD drugs, even if alternative approaches, such as the use of neurotrophic agents, nootropics, glutamate ...
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Isopilocarpine Binding to Muscarinic Cholinergic Receptors

Journal of Pharmaceutical Sciences, 1986
Isopilocarpine coexists with pilocarpine in nature, and it is present in varying degrees in commercial pilocarpine preparations. Using muscarinic cholinergic receptors from bovine ciliary muscle tissue, we measured the relative binding affinity of isopilocarpine and pilocarpine. The binding affinity of isopilocarpine was approximately one-tenth that of
M V, Drake, J J, O'Donnell, J R, Polansky   +2 more
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The nicotinic cholinergic receptor: A theoretical model

Journal of Neuroscience Research, 1996
Based on published affinity-labeling and mutagenesis experiments describing the effect of changes in specific amino acids in molecular biological studies on the nicotinic acetylcholinergic receptor (nAChR), we have identified 12 amino acids which are important in functioning at the nicotinic cholinergic receptor.
M H, Aprison, E, Galvez-Ruano, K B, Lipkowitz   +2 more
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Cholinergic Systems and Multiple Cholinergic Receptors in Ocular Tissues

Journal of Ocular Pharmacology and Therapeutics, 1985
Acetylcholine (ACh), choline acetyltransferases and cholinesterases occur in cornea, iris-ciliary body complex and retina of several vertebrates. In cornea, ACh may serve as a sensory transmitter as well as a local hormone, the function of which is not delineated.
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Receptors in neurodegenerative diseases, muscarinic cholinergic receptors

Pharmaceutica Acta Helvetiae, 2000
Publisher Summary Muscarinic acetylcholine receptors are present in the mammalian central nervous system (CNS) and in the periphery. Their stimulation produces inhibitory responses, such as bradycardia and vascular smooth muscle dilatation, and excitatory responses, such as ganglionic depolarization and smooth muscle contraction. Muscarinic receptors
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Cholinergic Receptor Isolation

1981
The isolation of specific cholinergic bindin protein (acetylcholine receptor = AChR) has been achieved successfully by numerous research groups (1-4, 7-9, 11, 12). The ideal source for such preparations was the electric organ of several species of Torpedo.
W. H. Hopff, A. A. Hofmann, G. Riggio, P. G. Waser   +3 more
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Cholinergic receptors in insects

Trends in Biochemical Sciences, 1979
Abstract It has been suggested that cholinergic receptors in insects are neither nicotinic nor muscarinic but of a mixed nature, and hence differ from ‘classic' vertebrate receptors. However, recent evidence indicates that insects also contain distinct nicotinic and muscarinic binding-sites with properties resembling those of vertebrate receptors. The
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Cholinergic Receptors in the Human vas Deferens

Journal of Receptor Research, 1992
This study represents the first investigation demonstrating the contractile response to exogenous acetylcholine (ACh) in the isolated human vas deferens. Pharmacological characterization of cholinergic receptors was achieved using selective antagonists to define receptor subtypes.
H F, Miranda, D, Bustamante, O, Castillo, P, Salvatierra, H, Saavedra, E, Fernandez, C, Paeile, T, Pelissier, G, Pinardi   +8 more
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Cholinergic receptors in the Aplysia gill

Journal of Neurobiology, 1984
AbstractAcetylcholine has been suggested as a neurotransmitter released in the Aplysia gill by peripheral afferents of central neurons and by peripheral neurons within the gill. The perfused gill, isolated from the abdominal ganglion, was examined. At concentrations greater than 1 μM, acetylcholine elicited a slowly developing tonic contraction of the ...
S, Weiss, J I, Goldberg, J P, Edstrom, K, Lukowiak   +3 more
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