Results 261 to 270 of about 154,177 (308)
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STUDIES OF NMDA- AND NON-NMDA-MEDIATED NEUROTOXICITY IN CULTURED NEURONS
Neurochemistry International, 1996The neurotoxic effects of various glutamate agonists were studied using whole fetal rat brain cultures. The results showed that L-glutamate (L-glu) and N-methyl-D-aspartate (NMDA) were the most potent agonists for inducing neurotoxicity, producing significant toxicity at 0.10 and 0.01 mM concentrations, respectively.
D L, Deupree +6 more
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Biochemistry (Moscow)
Astrocytic NMDA receptors (NMDARs) are heterotetramers, whose expression and properties are largely determined by their subunit composition. Astrocytic NMDARs are characterized by a low sensitivity to magnesium ions and low calcium conductivity. Their activation plays an important role in the regulation of various intracellular processes, such as gene ...
Artem M, Kosenkov +2 more
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Astrocytic NMDA receptors (NMDARs) are heterotetramers, whose expression and properties are largely determined by their subunit composition. Astrocytic NMDARs are characterized by a low sensitivity to magnesium ions and low calcium conductivity. Their activation plays an important role in the regulation of various intracellular processes, such as gene ...
Artem M, Kosenkov +2 more
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Increased NMDA affinity of the H780Q mutant of the NMDA receptor
Inorganica Chimica Acta, 1996A point mutation within the coding sequence of the primary subunit of the N-methyl-d-aspartatge (NMDA) subtypr of glutamate receptor (glutamine substitution for histidine at position 780) exhibits a higher affinity for NMDA than the wild type receptor (EC50 5 versus 27 μM).
Andrew T. Gray +3 more
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General Pharmacology: The Vascular System, 1993
1. Beginning with electrophysiological evidence for two populations of receptors for N-methyl-D-aspartate (NMDA) which did or did not respond to the agonist quinolinic acid, evidence has grown for such subdivision. 2. Data from binding studies is consistent with differences between three NMDA receptors in the striatum, thalamus and cerebellum with ...
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1. Beginning with electrophysiological evidence for two populations of receptors for N-methyl-D-aspartate (NMDA) which did or did not respond to the agonist quinolinic acid, evidence has grown for such subdivision. 2. Data from binding studies is consistent with differences between three NMDA receptors in the striatum, thalamus and cerebellum with ...
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Fundamental & Clinical Pharmacology, 1993
Summary— The synaptic responses elicited by glutamate and aspartate in the CNS are mediated by distinct groups of receptors which include the ionotropic NMDA receptor. The NMDA receptor is activated by high‐strength synaptic input and produces relatively sustained depolarization which can lead to repetitive burst firing.
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Summary— The synaptic responses elicited by glutamate and aspartate in the CNS are mediated by distinct groups of receptors which include the ionotropic NMDA receptor. The NMDA receptor is activated by high‐strength synaptic input and produces relatively sustained depolarization which can lead to repetitive burst firing.
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NeuroRehabilitation, 1991
Traumatic brain injury can produce neurochemical alterations in the brain that are of sufficient magnitude to cause neurological and cognitive deficits. These alterations are associated with a period of excessive neurotransmitter-receptor stimulation involving the N-Methyl-D-aspartate (NMDA) glutamate receptor, as well as other receptors. This abnormal
Lyeth, Bruce G. +2 more
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Traumatic brain injury can produce neurochemical alterations in the brain that are of sufficient magnitude to cause neurological and cognitive deficits. These alterations are associated with a period of excessive neurotransmitter-receptor stimulation involving the N-Methyl-D-aspartate (NMDA) glutamate receptor, as well as other receptors. This abnormal
Lyeth, Bruce G. +2 more
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2003
Abstract Alcohol dependence (“alcoholism”) is diagnosed based in part on the development of physiological adaptations to alcohol (ethanol) including tolerance and dependence, and loss of control over alcohol intake. It is believed that alcohol is initially ingested for its reinforcing effects (positive or negative), and that adaptive changes in the ...
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Abstract Alcohol dependence (“alcoholism”) is diagnosed based in part on the development of physiological adaptations to alcohol (ethanol) including tolerance and dependence, and loss of control over alcohol intake. It is believed that alcohol is initially ingested for its reinforcing effects (positive or negative), and that adaptive changes in the ...
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1990
Brief periods of anoxia cause a marked, but apparently fully reversible interruption of integrated brain function, whose cellular mechanism is not yet fully understood. For some 50 years it has been known that the hippocampus is one of the first brain regions to be affected by anoxia (Sugar and Gerard 1937).
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Brief periods of anoxia cause a marked, but apparently fully reversible interruption of integrated brain function, whose cellular mechanism is not yet fully understood. For some 50 years it has been known that the hippocampus is one of the first brain regions to be affected by anoxia (Sugar and Gerard 1937).
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NMDA Receptors as Voltage Sensors
2017The membrane potential is an essential parameter of a living cell. However, measurements of the membrane potential using conventional techniques are associated with a number of artifacts. Cell-attached recordings of the currents through NMDA receptor channels enable noninvasive measurements of the neuronal membrane potential.
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Heterocyclic modulators of the NMDA receptor.
Farmaco (Societa chimica italiana : 1989), 1993The design of new heterocyclic derivatives as modulatory agents at EAA receptors is described. In particular, the potent and selective activity at the NMDA receptor of trans-4-hydroxypipecolic acid-4-sulfate, as well as the neuroprotective properties of substituted thiokynurenates, a new class of competitive antagonists at the glycine site of the NMDA ...
PELLICCIARI, Roberto +9 more
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