Dopamine Flashcards

1
Q

Localisation dopamine

A

Voie Nigro striée
Voie Méso cortico Limbique
Voie tubero infundibulaire

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2
Q

Biosynthèse de la dopamine

A

Tyrosine ( avec tyr hydroxylase ) => DOPA

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3
Q

Stockage

A

VMAT 1 / 2 (ATP)

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4
Q

D1 like

A

D1 et D5
Gs ; PKA ; dim conductance potassique ; dépol Mb ( + excitable )

Loc striatum , noyau accumbens , pars réticula
+ périphérie pour augm de la filtr glomerulaire
Hippocampe hypothalamus

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5
Q

D2 like

A

D2 3 4 ; Gi
Mb - excitable
Striatum; noyau accumbens ; pars compacta ; tubercule olfactif

(-) prod de prolactine
D2 => vomiss

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6
Q

Effet dopa

A

FbL dose D1 vasc = vasodilatateur
Moyen = B1 card
Fort = Alpha 2 vasoconstriction

Utilité en rea etat de choc
Passe pas BHE
Dim de la prolactine

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7
Q

Médicament dopa

agoniste direct

A

D1 like =labo

D2 like = bromocriptine (parlodel) trt Parkinson

Non sélectif = Apomorphine (apokinon) trt Parkinson.

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8
Q

Inhib du catabolisme de la dopa

A

Inhib de MAO B = selegiline trt Parkinson

Inhib COMT = entacapone
Trt Parkinson

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9
Q

Inversion du transport de la récapture

A

Amphétamines

Methylphenidate = narcolepsie et TDAH

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10
Q

Inhib du transport de récapture

A

Anti Dep imipraminique non sélectif

Cocaïne

Mazindol, bupropion ( retire du commerce )

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11
Q

Antagoniste dopaminergique

A

Antag D1 ( labo )

Antag D2 like = neuroleptiques ou antipsychotique 
1er gen 
Phenotiazine = chlorpromazine 
Thioxanthenes = flupentixol
Butyrophénone = haldoperidole

2em Gen

Clozapine = leponex
Olanzapine = zyprexa
Risperidone = risperdal
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12
Q

Inhib de synthèse dopa

A

Inhib de tyrosine hydroxylase = Alpha méthyl para tyrosine

Inhib dopa decarbox = carbidopa, benserazide

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