Neuropharmacology Flashcards
Ionotropic is also a what?
Ligand gated ion channel
What are the two receptor types
Iontropic and metatropic
Metabotropic activates what proteins?
G proteins
When do iontropic receptors open?
When bound by a transmitter
Are ionotropic receptors direct or indirect?
Direct
Metabotropic receptors recognize the transmitter but instead activate what?
G proteins
Are metabotropic receptors direct or indirect?
Indirect
What do agonists do?
Initiates normal effects of the receptor
Agonists also mean what?
Mimic
What do antagonists do?
Prevents a receptor from being activated by other ligands
Name the 4 amino acids
Glycine
GABA
Aspartate
Glutamate
Glutamate is what?
The most common excitatory neurotransmitter in brain and spinal cord
What are glutamate’s 3 receptors?
AMPA, NMDA, kainate
Glutamate also acts on what?
mGluRs - slower metabotropic receptors
What is excitotoxicity?
Neural injury such as stroke or head trauma causes excess release of glutamate, which kills neurons
gaba is the most common ________ neurotransmitter in the brain
Inhibitory
GABA produces what kind of effects
Fast inhibitory effects. It is ionotropic
Glycine is?
The major inhibitory neurotransmitter in the spinal cord
What can block glycine?
Strychnine
Monoamines break down to what two categories?
Catecholamines & indolamines
Catecholamines consist of what?
Dopamine, norepinephrine, dopamine, and epinephrine.
Indolamines consist of what
Serotonin
Dopamine is responsible for what
Reward, reinforcement and learning; schizophrenia
What’s the Mesolimbocortical pathway
Ventral tegmental area to nucleus accumbens, cortex, and hippocampus