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Pharm 12 GABA/Gluta
Pharm
Question | Answer |
---|---|
Inhibits GABA transporters in neurons and glia to increase extra/synaptic GABA for epilepsy. metab by CYP3A4. SE: confuse, sedate, amnesia, ataxia | Tiagabine |
blocks GABA->succinic semialdehyde, leads to high intracell GABA and increased synaptic GABA release for epilepsy. SE: drowsy, confuse, headache, bilateral visual defects | Vigabatrin |
Bind at single site of GABAa R to increase channel opening and slow receptor deactivation->increased Cl influx. for anxiety (from depression/schizo) and muscle spasms (from MS). use intermittently. metab by CYP3A4 | Diazepam (long) also for focal/tonic-clonic seizures, Alprazolam (intermediate) |
Bind at single site of GABAa R to increase channel opening and slow receptor deactivation->increased Cl influx. rapid onset/short acting anxiolytic/sedative/amnestic/and for focal/tonic-clonic seizures. metab by CYP3A4 | Midazolam (short) |
Bind at single site of GABAa R to increase channel opening and slow receptor deactivation->increased Cl influx. for insomnia. Contra: pulm/cardio disease, brain damage/stroke. metab by CYP3A4 | Triazolam (short), Estazolam and Temazepam (intermediate), Flurazepam and Quazepam (long) |
Bind at single site of GABAa R to increase channel opening and slow receptor deactivation->increased Cl influx. for absence seizures. metab by CYP3A4 | Clonazepam |
Reduce neuronal excitability by increasing GABA-mediated inhibition by increasing time Cl channel is open. lipid soluble for anesthesia. metab by CYP450s. SE: overdose->hypnosis, coma, resp depress, death. | Thiopental and Methohexital (ultrashort mins), Pentobarbital (short, also for insomnia) |
Reduce neuronal excitability by increasing GABA-mediated inhibition by increasing time Cl channel is open. for focal and tonic clonic seizures and status epilepticus. metab CYP450s. barbiturate coma, may exacerbate absence seizures. | Phenobarbital (long) |
Enhance activation of GABAa Rs and are agonists at high conc. For general anesthesia | Etomidate (w hemodynamically unstable pts, also inhibits cortisol/aldosterone synth), Propofol (depresses cardiac output and vasc tone) |
Selective GABAb R agonist for spasticity (from MS or spinal cord injury). Oral (no tolerance) or intrathecal. SE: sedation, somnolence, ataxia, overdose->blurry vision, hypotense, cardiac/pulm depress, coma, w/drawl->rhabdomyolysis, pruritus, shock | Baclofen |
Date rape drugs | Chloral Hydrate, Gamma-Hydroxybutyric Acid (GHB), Flunitrazepam (Rohypnol) |
volt-gated Na channel blocker that prolongs survival and decreases disease progress in ALS. | Riluzole |
Noncompetitive NMDA receptor antag for Alzheimers dementia | Memantine |
Noncompetitive NMDA receptor antag for reducing the severity of dyskinesia in Parkinsons in combo w Levodopa | Amantadine |