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Glutamate is a very major constituent of a wide variety of proteins; consequently it is one of the most abundant amino acids in the human body. [1] Glutamate is formally classified as a non-essential amino acid, because it can be synthesized (in sufficient quantities for health) from α-ketoglutaric acid, which is produced as part of the citric acid cycle by a series of reactions whose ...
Glutamatergic means "related to glutamate". A glutamatergic agent (or drug ) is a chemical that directly modulates the excitatory amino acid ( glutamate / aspartate ) system in the body or brain. Examples include excitatory amino acid receptor agonists , excitatory amino acid receptor antagonists , and excitatory amino acid reuptake inhibitors .
NMDA receptors are glutamate-gated cation channels that allow for an increase of calcium permeability. Channel activation of NMDA receptors is a result of the binding of two co agonists, glycine and glutamate. Overactivation of NMDA receptors, causing excessive influx of Ca 2+ can lead to excitotoxicity. Excitotoxicity is implied to be involved ...
GLP-1 drugs may protect the brain from inflammation, some studies say, but others warn they may increase depression risk. Image credit: James Manning – PA Images/Getty Images.
Glutamate (the conjugate base of glutamic acid) is abundant in the human body, but particularly in the nervous system and especially prominent in the human brain where it is the body's most prominent neurotransmitter, the brain's main excitatory neurotransmitter, and also the precursor for GABA, the brain's main inhibitory neurotransmitter. [2]
Failure to manage the alcohol withdrawal syndrome appropriately can lead to permanent brain damage or death. [11] Acamprosate, a drug used to promote abstinence from alcohol, an NMDA antagonist drug, reduces excessive glutamate activity in the central nervous system and thereby may reduce excitotoxicity and withdrawal related brain damage. [12 ...
Glutamate is a prime example of an excitotoxin in the brain, and it is also the major excitatory neurotransmitter in the central nervous system of mammals. [14] During normal conditions, glutamate concentration can be increased up to 1mM in the synaptic cleft, which is rapidly decreased in the lapse of milliseconds. [15]
Metabotropic glutamate receptors are known to act as modulators of (affect the activity of) other receptors. For example, group I mGluRs are known to increase the activity of N-methyl-D-aspartate receptors (NMDARs), [12] [13] a type of ion channel-linked receptor that is central in a neurotoxic process called excitotoxicity.