GABA Flashcards
1
Q
Source
A
Glutamic acid (glutamate)
2
Q
Rate limiting step
A
Glutamic acid decarboxylase (GAD) catalysis
3
Q
Synthetic enzymes
A
Glutamic acid decarboxylase (GAD)
4
Q
Breakdown product
A
Glutamate - succinic acid
5
Q
Reuptake
A
Into presynaptic nerve terminals and surrounding glial cells
6
Q
Function
A
Mediates anxiety
Seizure cessation
Actions of benzos, barbiturates, alcohol
7
Q
Receptors
A
GABA-A - opens chloride channels, inhibitory (leads to hyperpolarisation)
GABA-B - G protein coupled, baclofen is selective agonist
8
Q
Disorders
A
Role in anxiety disorders and alcoholism
May have a role in epilepsy and Huntington’s