neurodegenerative diseases Flashcards
parkinsons
muscle rigidity,bradykinesia,tremors
imbalanced ach/dopa
mutual inhibitory pathway disabled due to deletion of dopaminergic neurons in substantial migration
pseudoparkinsonism
PHENOTHIAZINE
HALOPERIDOL by blocking dopaminergic neurons
drugs in Parkinson treatment
LEVODOPA AND CARBIDOPA
SELEGINLINE AND RASAGILINE
ENTACAPONE AND TOLCAPONE
BROMOMCRIPTINE
APOMORPHINE PRAMIPEXOLE ROPINEROLE ROTIGOTINE
AMANTIDINE
ANTIMUSCARINIC(TRIHEXYLPHENIDYL,BENZOTRIPINE,PROCYCLIDINE)
LEVODOPA AND CARBIDOPA
enhance synthesis of dopamine and dopamine decarboxylase inhibitor respectively(inc COMT)
cardiac arrhythmia common(TACHY AND VENTRICULAR EXTRASYSTOLES WITH HYPOTENSION)
levo short half life ON OFF PHENOMENA(MOTOR FLUCTUATIONS)
MOOD CHANGES DEPRESSION (ACUTE PSYCHOSIS)
B6 increases levodopa breakdown
phenelzine and levodopa
HYPERTENSIVE CRISIS
s a severe increase in blood pressure that can lead to a stroke. Extremely high blood pressure 180 or higher (diastolic pressure) can damage blood vessels.
SELEGILINE AND RASAGILINE(DEPRENYL/irreversible)
INHIBIT MAO TYPE B(only dopa)
metabolized to mephetamine and amphetamine producing insomnia
entacapone
inhibit COMT inc by levodopa
no toxicity
tolacapone
inhibit COMT
hepatic necrosis, dyskinesia,sleep disorders
bromocriptine
ergot derivative
dopamine agonist
could cause pulmonary and retroperitoneal fibrosis
mental condition gets worse
apomorphine
dopa agonist
acute management of hypomobility off in extreme parkinsons
ROTIGOTINE
TRANSDERMAL PATCH DOPA AGONIST
alleviate motor deficits in advance Parkinsonism
cimetidine
DOPA AGONIST
inhibit renal tubular secretion of organic bases inc half life of pramipexole
AMANTIDINE
antiviral drug
inhibit NMDA,inc DOPA,ANTICHOLINERGIC
INDUCE ACTUTE TOXIC PSYCHOSIS
antiparkinsonian
benztropine
trihexylphenidyl
biperiden
procyclidine
anticholinergics and antiparkinsonian correcting imbalance
alzeihmers
beta amyloid accumulations
loss of cholinergic neurons
numerous neurofibilary tangles