GLUTAMATE Flashcards

1
Q

glutamate is excitatory or inhibitory

A

excitatory

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2
Q

glutamate is ionized form of

A

glutamic acid

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3
Q

glutamate is formed by

A

glutamine by glutaminase

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4
Q

VGLUT

A

vesicular glutamate transporters

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5
Q

glutamate uptake

A

astrocytes with excitatory amino acid transporters

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6
Q

glutamine synthetase

A

converts glutamate to glutamine

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7
Q

glutaminase

A

converts glutamine to glutamate

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8
Q

glutamate functions

A

synaptic plasticity, learning and memory, psychopathologic disorders

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9
Q

glutamate ionotropic receptors

A

AMPA, kainate, NMDA

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10
Q

NMDA

A

allows Ca and Na to pass through, activates second messenger, binding site for Mg

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11
Q

NBQX

A

antagonist of AMPA and kainate, causes sedation and ataxia

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12
Q

NMDA activated

A

glutamate and co agonist (glycine or D-serine)

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13
Q

glutamate metabotropic receptors

A

mGluR1-mGluR8

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14
Q

I-AP4

A

selective agonist of mGluR4,6-8 auto receptors, suppress transmission

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15
Q

AMPA positive allosteric modulators are

A

cognitive enhancers

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16
Q

long term potentiation (LTP)

A

NMDA, persistent increase in synaptic strength because of burst of energy in pre synaptic neuron

17
Q

excitotoxicity hypothesis

A

excessive exposure to glutamate causes prolonged depolarization of neurons leading to damage or death