Alzheimer - Calon Flashcards

1
Q

enzyme qui transforme l’acétylcholine en acétate + choline

A

acétylcholinestérase

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2
Q

Nommez 2 inhibiteurs pseudo-irréversible

A

néostigmine (prostigmin)

pyridostigmine (mestinon)

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3
Q

nommez 1 inhibiteur réversible

A

Edrophonium (enlon)

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4
Q

2 types de neuropathologie en alzheimer

A

pathologie amyloide
(peptide AB, plaques amyloïdes)

pathologie tau
(prot tau hyperphosphorylées, enchevetrement neurofibrillaire)

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5
Q

décrivez les changements majeurs dans le cerveau en alzheimer (4)

A

diminution d’ACh (stade modéré-sévère)
diminution activité cholinetransférase
perte de neurone cholinergique
diminution AChE

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6
Q

Nommez 3 inhibiteurs de l’acétylcholinestérase

A

Donépézil
Galantamine
Rivastigmine

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7
Q

iAChE le moins bien toléré

A

rivastigmine

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8
Q

iAChE le mieux toléré

A

galantamine

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9
Q

T1/2 et durée d’action de la rivastigmine

A

t1/2 = 1 à 2h

agit pendant environ 10h (demeure longtemps au site d’action)

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10
Q

inhibiteurs réversibles et compétitifs de l’AChE (2)

A

donépézil et galantamine

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11
Q

iAChE qui joue sur les récepteurs nicotiniques centraux

A

galantamine

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12
Q

antagoniste glutamatergique

A

mémantine

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13
Q

MA mémantine

A

bloque les récepteurs NMDA

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14
Q

quand donner la mémantine?

A

réservé aux stades plus avancés de la MA

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