Anti-Parkinson drugs

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Questions and Answers

Which of the following is a genetic cause of Parkinsonism?

  • Sporadic or Idiopathic
  • Manganese Poisoning
  • Iatrogenic physician induced
  • Genetic mutation of a-synuclein and parkin genes (correct)

What is the mechanism by which Manganese Poisoning leads to Parkinsonism?

  • Blocks DA receptors
  • Reduces dopamine activity
  • Interferes with enzyme systems, oxidizes DA (correct)
  • Depletes brain monoamines from storage sites

Which form of Parkinsonism is caused by infarcts in the region of the putamen?

  • Arteriosclerotic (correct)
  • Von Economo's
  • Post encephalitic
  • MPTP

Which form of Parkinsonism is associated with slow progressive deterioration and development of Parkinson symptoms?

<p>Post encephalitic (D)</p> Signup and view all the answers

Which compound, when enzymatically reacted with MAOb, forms superoxides breaking down to MPP+ and causes Parkinsonism?

<p>MPTP (D)</p> Signup and view all the answers

Which drug is a precursor of dopamine and can alleviate Parkinsonism?

<p>L-DOPA (A)</p> Signup and view all the answers

What is the role of carbidopa in the treatment of Parkinsonism?

<p>Inhibits decarboxylase activity in the periphery (C)</p> Signup and view all the answers

Which drug combination, using generic drug names is commonly used to treat Parkinsonism?

<p>L-DOPA and carbidopa (A)</p> Signup and view all the answers

Which enzyme does ENTACAPONE inhibit?

<p>COMT (A)</p> Signup and view all the answers

What is the main action of ENTACAPONE?

<p>Prolongs l-dopa action (D)</p> Signup and view all the answers

Which drug can be hepatotoxic?

<p>TOLCAPONE (C)</p> Signup and view all the answers

Which enzyme does TOLCAPONE inhibit?

<p>Catechol-O-methyltransferase (C)</p> Signup and view all the answers

What is the main action of AMANTADINE in the treatment of Parkinsonism?

<p>Enhancement of dopamine release (D)</p> Signup and view all the answers

Which drug is a D2 agonist and has a longer duration of action than l-dopa?

<p>Bromocriptine (B)</p> Signup and view all the answers

Which drug has affinity for D3 receptors and can be used as monotherapy for mild Parkinsonism cases?

<p>Pramipexole (C)</p> Signup and view all the answers

Which drug is a D1 and D2 agonist, more potent than bromocriptine, and has a longer duration of action than l-dopa?

<p>Pergolide (D)</p> Signup and view all the answers

Which drug is a D2 agonist and is used for patients with mild symptoms to reduce fluctuations in response to l-dopa treatment?

<p>Ropinirole (D)</p> Signup and view all the answers

Which of the following is a toxic side effect of l-dopa?

<p>Nausea and vomiting (B)</p> Signup and view all the answers

What is the main cause of orthostatic hypotension in l-dopa treatment?

<p>Reduced blood pressure when standing up (B)</p> Signup and view all the answers

What is the treatment for dyskinesia (chorea) caused by l-dopa overdose?

<p>Reduce the amount of l-dopa (D)</p> Signup and view all the answers

What is the cause of mental effects such as agitation and insomnia in l-dopa treatment?

<p>Excess levels of dopamine in the CNS (D)</p> Signup and view all the answers

Which of the following is a long-term complication of Levodopa treatment?

<p>Dyskinesias (B)</p> Signup and view all the answers

Which phenomenon refers to the end-of-dose deterioration in motor performance?

<p>Wearing off (D)</p> Signup and view all the answers

What is the cause of the 'on-off' phenomenon in Levodopa treatment?

<p>Change to phasic dopaminergic transmission (B)</p> Signup and view all the answers

Which enzyme breaks down NE and 5-HT in the CNS in the central nervous system?

<p>MAOa (A)</p> Signup and view all the answers

Which drug blocks dopamine receptors and can decrease dopamine activity by depleting stores of central dopamine?

<p>Reserpine (B)</p> Signup and view all the answers

Which vitamin can reduce the effectiveness of l-dopa?

<p>Vitamin B6 (C)</p> Signup and view all the answers

Which drug interferes with the absorption of l-dopa from the gut?

<p>High Protein Meal (C)</p> Signup and view all the answers

Which drug inhibits decarboxylase activity primarily in the periphery, leading to a longer duration of action than carbidopa?

<p>Benserazide (C)</p> Signup and view all the answers

Which drug is used as a supplement prior to L-DOPA treatment to increase DA activity by inhibiting MAO-B activity? Generic names only!!

<p>Selegiline (B)</p> Signup and view all the answers

Which drug is a precursor of dopamine and crosses the Blood Brain Barrier?

<p>L-DOPA (C)</p> Signup and view all the answers

Which drug is an anti-cholinergic drug used to alleviate Parkinsonism symptoms?

<p>Benzatropine (C)</p> Signup and view all the answers

Which drug is a histamine (H1) blocker and is used to alleviate Parkinsonism symptoms?

<p>Benztropine (B)</p> Signup and view all the answers

Which drug is a synthetic drug and is used to alleviate Parkinsonism symptoms?

<p>Trihexyphenidyl (A)</p> Signup and view all the answers

Which class of drugs blocks dopamine receptors?

<p>Haloperidol and phenothiazines (D)</p> Signup and view all the answers

Which drugs deplete brain monoamines from storage sites?

<p>Reserpine and tetrabenazine (C)</p> Signup and view all the answers

Which enzyme breaks down dopamine in the brain?

<p>MAOb (C)</p> Signup and view all the answers

Which class of drugs blocks dopamine receptors?

<p>Antipsychotics (C)</p> Signup and view all the answers

Which enzyme breaks down dopamine in the brain?

<p>Catechol-O-methyltransferase (COMT) (B)</p> Signup and view all the answers

Which of the following is an adverse effect of anticholinergic drugs?

<p>Increased intraocular pressure (A)</p> Signup and view all the answers

Which of the following is NOT an adverse effect of anticholinergic drugs?

<p>Increased heart rate (D)</p> Signup and view all the answers

Which drug is a neurotoxin selectively toxic to the substantia nigra cells, causing almost all symptoms of Parkinson's disease?

<p>MPTP (D)</p> Signup and view all the answers

Which nutrient has been shown to relieve an average of 70% of Parkinson's disease symptoms?

<p>L-tyrosine (B)</p> Signup and view all the answers

Which therapeutic approach for Parkinson's disease involves the implantation of stem cells genetically engineered to produce dopamine?

<p>Gene therapy (B)</p> Signup and view all the answers

Which surgical therapy for Parkinson's disease is permanent? It lessens motor functions

<p>Pallidotomy (C)</p> Signup and view all the answers

Which surgical therapy for Parkinson's disease has a higher technical difficulty?

<p>Pallidal stimulator (C)</p> Signup and view all the answers

Which therapeutic approach for Parkinson's disease has shown unsatisfactory initial results?

<p>Gene therapy (B)</p> Signup and view all the answers

Which type of agents could protect neurons from cell death and result in a slower progression of Parkinson's disease?

<p>All of the above (D)</p> Signup and view all the answers

Which surgical therapy for Parkinson's disease has a greater effect on reducing tremor but less effect on motor fluctuations?

<p>Thalamotomy (C)</p> Signup and view all the answers

Which nutrient has been shown to relieve between 10-60% of Parkinson's disease symptoms?

<p>Ferrous iron (B)</p> Signup and view all the answers

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