E1- Parkinson and Alzheimer's Flashcards
What drugs are used to increase DA levels/replacement therapy in the treatment of Parkinsons?
L-Dopa
What is the MOA of L-Dopa?
L-DOPA readily crosses BBB and is converted into DA in the neuron
What are the uses of L-Dopa?
1st line for PD
Improves PD sx for 3-4yrs Bradykinesia
What is L-Dopa not effective against?
Disease progression
Drug-induced Parkinsonism
What can be added to L-Dopa to decrease the dose needed and the peripheral effects?
Carbidopa
What is the MOA of Carbidopa?
Carbidopa inhibits dopa-decarboxylate, but doesn’t cross the BBB
What are SE of L-Dopa?
Nausea/emesis
Dyskinesias
Depression, anxiety, agitation, sleep problems
Psychosis
What should you give to psychosis associated with Parkinson’s?
Atypical antipsychotic
Pimavanserin (inverse agonist/5-HT receptor antagonist)
What can be used as an on-off phenomenon rescue?
Apomorphine
What are possible drug interactions with L-Dopa?
MAO-AIs (HTN crisis)
Pyridoxine (vit B6)
What is the MOA of Selegiline, Rasagiline, and Safinaminde?
Inhibit MAO-B in CNS and reduces striatal metabolism of DA
What are SE of Selegiline, Rasagiline, and Safinaminde?
Insomnia (take in morning)
Increase SE of L-Dopa in late stages of disease
What are possible drug interactions of Selegiline, Rasagiline, and Safinaminde?
MAOI (HTN crisis)
Meperidine
TCAs/SSRIs (serotonin syndrome)
What is the MOA of Tolcapone?
Inhibits COMT in CNS and periphery
What is a SE of Tolcapone and Entacapone?
Orange color urine
What is the MOA of Entacapone?
Inhibits COMT in periphery only
What drugs are DA receptor agonist used in the tx of Parkinson’s? (4)
Ropinirole, Pramipexole
Bromocriptine
Apomorphine
What type of drugs continue to be effective in the tx of Parkinsons as the disease progresses?
DA receptor agonist
Which drug can cause erythromelalgia (painful, itchy, swollen, red hands/feet)?
Bromocriptine
What is a SE of Apomorphine? How do you treat it?
Nausea
Take antiemetic prior (Trimethobenzamide)
What is DOC for restless leg syndrome?
Ropinirole
Which drug can cause Livedo reticularis (reddish/blue spotting of skin)?
Amantadine
Which anticholinergics are used in the tx of Parkinson’s?
Benztropine
Trihexyphenidyl
What cholinesterase inhibitors are used in the tx of Alzheimer’s?
Donepezil, Rivastigmine, Galantamine
What NMDA receptor antagonist is used in the tx of Alzheimer’s?
Memantine
What should you NOT combine Memantine with?
Meperidine