MS pathology Flashcards

1
Q

normal appearing white matter

A

alleen groene (myeline) en rode bolletjes (axonen)

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2
Q

roze op post mortem

A

scar tissue

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3
Q

active lesion

A

lot of active (blue) immune cells, loss of myelin.

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4
Q

chronic active lesion

A

immunocells have eaten away the myelin, in het midden geen immuno cellen meer maar een rand er om heen.

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5
Q

chronic inactive lesion

A

irreversible, alle immunocellen zijn weg, het myeline is veranderd in scar tissue.

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6
Q

pathology description

A
demyelination PLP
infiltration of leukocytes (MHCII) 
foamy macrophages 
perivascular infiltrate
axonal damage (APP)
axonal loss (silverstain)
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7
Q

volgorde active etc

A

preactive - active - chronic active - chronic inactive

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8
Q

grey matter lesions in

A

hippocampus, (hypo) thalamus, cerebral cortex, basal ganglia, neocortical, spinal cord grey matter

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9
Q

wat voor symptomen door grey matter damage

A

motor function, fatigue, epilepsy, cognitive decline

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10
Q

grey matter lesions

A

classified based on anatomical region
no leukocyte infiltration
no macrophage activation
no signs of BBB breakdown

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11
Q

dus vragen hierbij

A

waarom geen leukocyte infiltration?
hoe dan neuronal loss?
en hoe demyelination?

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12
Q

CNS extrinsic model: outside in

A

eerst immuunsysteem iets fout, daarna pas aanval in het brein.

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13
Q

inside out

A

eerst damage in het brein, daarna aangevallen door immuunsysteem

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14
Q

shadow plaques

A

may be leading to remyelination -> repopulated oligodendrocytes that lead to remyelination

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15
Q

possible triggers in ms

A

oligodendrocyte damage
neuronal/axonal injury
disrupted synapses

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16
Q

axo-myelinic synapse

A

chemical synapse between axon and myelin, one that supports activity-dependent communication between the two.

17
Q

ms is an autoimmune disease…

A

maar is het primary or secondary?

18
Q

what is plp

A

major myelin protein in the CNS