Results 211 to 220 of about 154,788 (267)
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Trends in Neurosciences, 1993
Acetylcholine may set the dynamics of cortical networks to those appropriate for learning of new information, while decreased cholinergic modulation may set the appropriate dynamics for recall. In slice preparations of the olfactory cortex, acetylcholine selectively suppresses intrinsic but not afferent fiber synaptic transmission, while decreasing the
M E, Hasselmo, J M, Bower
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Acetylcholine may set the dynamics of cortical networks to those appropriate for learning of new information, while decreased cholinergic modulation may set the appropriate dynamics for recall. In slice preparations of the olfactory cortex, acetylcholine selectively suppresses intrinsic but not afferent fiber synaptic transmission, while decreasing the
M E, Hasselmo, J M, Bower
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Nature, 1971
IN a recent letter, Chothia and Pauling1 comment on our paper dealing with the determinants of specificity at cholinergic synapses2. They correctly point out that we do not define the conformation of acetylcholine which is responsible for its action at nicotinic sites.
W H, Beers, E, Reich
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IN a recent letter, Chothia and Pauling1 comment on our paper dealing with the determinants of specificity at cholinergic synapses2. They correctly point out that we do not define the conformation of acetylcholine which is responsible for its action at nicotinic sites.
W H, Beers, E, Reich
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Neurochemistry International, 1980
Acetylcholine in the retina is synthesized and released by a sparse group of amacrine cells that symmetrically line both margins of the inner plexiform layer. The action of these neurons is at once very selective (they affect ganglion cells of some functional classes, but not others) and rather diffuse (the dependence of the acetylcholine-sensitive ...
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Acetylcholine in the retina is synthesized and released by a sparse group of amacrine cells that symmetrically line both margins of the inner plexiform layer. The action of these neurons is at once very selective (they affect ganglion cells of some functional classes, but not others) and rather diffuse (the dependence of the acetylcholine-sensitive ...
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Nature, 1965
THE development of the attenuated total reflexion (ATR) method1,2 for the examination of aqueous solutions in the infra-red region has made it possible to re-examine the problem of the conformation of acetylcholine (Ach) in aqueous and mammalian Ringer solution.
F G, Canepa, E F, Mooney
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THE development of the attenuated total reflexion (ATR) method1,2 for the examination of aqueous solutions in the infra-red region has made it possible to re-examine the problem of the conformation of acetylcholine (Ach) in aqueous and mammalian Ringer solution.
F G, Canepa, E F, Mooney
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Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1975
Abstract a-Bungarotoxin is one of a class of proteins, isolated from snake venoms, which antagonize the action of acetylcholine at vertebrate neuromuscular junctions and ‘electroplaques' of electric fish. a-Bungarotoxin blocks acetylcholine action irreversibly and may be labelled with either 125I or 3H.
D P, Green +3 more
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Abstract a-Bungarotoxin is one of a class of proteins, isolated from snake venoms, which antagonize the action of acetylcholine at vertebrate neuromuscular junctions and ‘electroplaques' of electric fish. a-Bungarotoxin blocks acetylcholine action irreversibly and may be labelled with either 125I or 3H.
D P, Green +3 more
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The conformation of acetylcholine
Biochimica et Biophysica Acta, 1962Abstract The infrared absorption of the carbonyl peak of acetylcholine exhibits a shift toward the higher energy. 2-Dimethylamino ethyl acetate, 3-dimethylaminopropyl acetate, 4-dimethylaminobutyl acetate show the expected absorption spectra for the carbonyl peak in that they are precisely like ethyl acetate.
J H, FELLMAN, T S, FUJITA
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Scientific American, 1977
When a nerve makes a muscle cell contract, it gives the cell a tiny squirt of acetylcholine. Receptors on the cell respond by opening so that ions can travel through the cell membrane.
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When a nerve makes a muscle cell contract, it gives the cell a tiny squirt of acetylcholine. Receptors on the cell respond by opening so that ions can travel through the cell membrane.
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Dementia and Geriatric Cognitive Disorders, 1999
The neurotransmitter acetylcholine has been implicated in animal and human studies of delirium. This chapter will briefly review the clinical studies focussing on measurement of serum levels of anticholinergic activity in delirious states. Three approaches have been taken.
L E, Tune, S, Egeli
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The neurotransmitter acetylcholine has been implicated in animal and human studies of delirium. This chapter will briefly review the clinical studies focussing on measurement of serum levels of anticholinergic activity in delirious states. Three approaches have been taken.
L E, Tune, S, Egeli
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Nature, 1958
ACETYLCHOLINE has recently been reported to be present in low concentrations (0.1–1 µgm./ml.) in the milk of various species1–4. On the other hand, the mammary gland does not appear to possess a cholinergic innervation5,6. Accordingly, the question of the presence of acetylcholine in milk has been re-examined.
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ACETYLCHOLINE has recently been reported to be present in low concentrations (0.1–1 µgm./ml.) in the milk of various species1–4. On the other hand, the mammary gland does not appear to possess a cholinergic innervation5,6. Accordingly, the question of the presence of acetylcholine in milk has been re-examined.
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Conformations of Acetylcholine
Nature, 1968Canepa, Pauling and Sorum1 have reported the single crystal structure analysis of acetylcholine bromide and pointed out a correlation between that structure and those of choline chloride and muscarine iodide. In particular the (CH3)3N+–C–C–O– groups of all three are very similar in conformation with the ether oxygen atom gauche to the nitrogen atom ...
C, Chothia, P, Pauling
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