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PCOL Finals
Parkinsonsim,
| Question | Answer |
|---|---|
| Primary tx, Drug of choice for Parkinsonism | Levodopa |
| Reduced peripheral metabolism of levodopa when combined with? | Carbidopa |
| Part of the brain where dopaminergic neurons are destroyed | Substantia nigra (basal ganglia) |
| Drugs that increase dopamine levels in the brain. | Dopamimetics |
| If drugs aren't curative, what are they used for? | Treat symptoms |
| Why are dopamimetics lipophilic? | To cross the BBB |
| Incidence of parkinsonism increase risk when which vitamin is lacking? | Vitamin D |
| What neurotransmitter increases levels when dopamine decreases? | Acetylcholine |
| Symptom which writings become smaller | Micrografia |
| Symptom which muscles jerks involuntarily, unpredictably, and irregular | Chorea |
| Sudden coordinative abnormal/repetitive movements | Tics |
| Type of Parkinson disease where there is only minimal to no dopamine deficiency at all but has additional symptoms and is difficult to treat | Atypical |
| The primary pathology is dopamine deficiency but has good response to drugs. Can later on have falling and dementia | Idiopathic |
| Type of parkinsonism wherein the disease is caused by disease or medication | Secondary |
| Peripheral metabolism of levodopa decreases, Plasma levels of of levodopa increase, protects levodopa. | Carbidopa |
| 3-(3, 4-dihydroxyphenyl)L-alanine: drug of choice for parkinsonism | Levodopa |
| TRUE or FALSE: Levodopa, when used for a long period of time, increases efficacy and tolerance develops. | FALSE. (Decreases efficacy) |
| Adverse effects of L-Dopa | Anorexia, Nausea/vomiting, Behavioral effects, Choreoathetosis |
| You do this to reverse the tolerance and increase the effect again., and alleviate A/E. Usually for 3-21 days. | Drug Holiday |
| This increases the breakdown of L-Dopa (ex. when you take Vit B6) | Drug interaction |
| Selective Catechol-o-methyltransferase inhibitors | Tolcapone and Entacapone |
| Which of the selective COMT Inhibitors have longer duration of action and is less hepatotoxic? A. Tolcapone B. Entolcapone C. Entacapone D. Alcapone | C. Entacapone |
| BRAND name of the generic name: Levodopa+Carbidopa+Entacapone | Stalevo |
| The benefits of L-Dopa begins to diminish at what year/s? | 3-4 years |
| Prolongs the action of L-Dopa by diminishing its peripheral metabolism | COMT inhibitors |
| Give the two (2) Dopamine Agonists Derivatives | Ergot derivative and Non-ergot derivative |
| What fungi infects plants like grains and rye? | Ergot/Claviceps purpurea |
| This ergot derivative is not commonly used because it can increase pulmonary fibrosis, but is useful for management of hyperprolactinemia | Bromocriptine |
| This ergot derivative is not used because it is associated w/ Valvular Heart Disease. | Pergolide |
| Inflamed and stiff heart valves | VHD (Valvular Heart disease) |
| This non ergot derivative is a potent dopamine agonist, by using subcutaneous injection of HCl salt to relief akinesia temporarily | Apomorphine |
| HCl salt SC Inj. brand name that causes significant nausea | Apokyn |
| Adverse effects associated with ergot derivatives | Painless digital vasospasm |
| which MAO inhibitor metabolizes NE, 5HT, DA neurotransmitters | MAO-A |
| MAO inhibitor that metabolized dopamine SELECTIVELY | MAO-B |
| Selective MAO-B Irreversible inhibitor at normal doses that retards breakdown of dopamine, enhancing the antiparkinsonism of L-Dopa, but may also cause insomnia | Selegiline |
| More potent than selegiline in preventing MPTP-induced parkinsonism | Rasagiline |
| A protoxin compound where parkinsonism symptoms can occur when digested. Clue: (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) | MPTP |
| TRUE or FALSE: Phenylephrine can be given when the px. taking MAO inhibitors gets fever and colds | FALSE. (any OTC drug preparations have drug interactions with MAO inhibitors may they be selective of not) |
| TRUE or FALSE: Tricyclic antidepressants or TCA and SSRI can reuptake serotonin inhibitors. | TRUE. |
| TRUE or FALSE: Tyramine rich foods like kimchi, wine, or any fermented foods are contraindications of Dopamine agonists | FALSE. (CI of MAO inhibitors) |
| An antiviral agent that can be used as dopamine agonist itself but is less efficacious than L-Dopa. It can also induce CNS effects, Tolerance develops more readily and is also used for tx. of Influenza. | Amantadine |
| Skin adverse effect (fishnet like appearance) when taking Amantadine | Livedo Reticularis |
| Centrally acting antimuscarinics, improving tremors, rigidity, and has little effect on bradykinesia | Anticholinergics |
| Anticholinergics include? Clue: Mercedes benz beeping on the tricycle inside the Parking | BENZtropine mesylate BIPeridine TRIhexyphenidyl |
| Enzyme that is crucial for producing Dopamine (from L-Dopa) | Aromatic L-amino acid decarboxylase (AADC) |
| MAO-B is primarily found on what cell? | Glial cells |
| What is the mechanism of action of Amantadine in Parkinsonism? | Increases dopamine synthesis and release |
| Which dopamine agonist is delivered via transdermal patch? | Rotigotine |
| Pergolide can induce a problem with the? | Heart |
| Bromodiptine can induce a problem with the? | Lungs |