Case 5 - Stroke recovery and rehabilitation Flashcards

1
Q

stroke pathophysiology diagram

A
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2
Q

what are present on acute injury

A

NMDA receptors and free radicals

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3
Q

what produce inflammatory factors in the CNS

A
  • astrocytes
  • microglia
  • neurones
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4
Q

what does blood brain barrier damage lead to

A

infiltration of neutrophils

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5
Q

what is responsible for the acute phase

A

the liver

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6
Q

what is angiogenesis

A

restoration of the blood supply

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7
Q

where does neurogenesis take place in the adult brain

A

subgranular zone of dentate gyrus of the hippocampus
sub ventricular zone in the lateral ventricle

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8
Q

what do you tag cells with to look at neurogenesis

A

3H thymidine incorporated

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9
Q

what happens In neurogenesis in the sub granular zone

A
  • newly formed cells migrate from the outer sub granular zone to inner granule cell layer I the hippocampal dentate gyrus
  • hippocampus is part of the memory making side of the brain
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10
Q

what happens in neurogenesis in the sub ventricular zone

A

in normal brain, neural progenitors migrate from SVZ to olfactory bulb via rostral migratory stream

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11
Q

what happens in neurogenesis in the sub ventricular zone in injured tissue

A
  • neural progenitors from the SVZ leave the RMS and migrate laterally towards the damaged ares
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12
Q

what are the astroglia progenitors

A

GFAP

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13
Q

what are the immature proliferating cells

A

dcx

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14
Q

what are the mature neurones

A

NeuN

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15
Q

what are the factors involved in angiogenesis

A

cytokines
chemokine
integrins - ECM
growth factors

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16
Q

what is the main mediator of angiogenesis

A

vascular endothelial growth factor

17
Q

when the blood brain barrier is damaged:

A

VEGF, Ang-1, endothelial activation and proliferation all occur
Then, ECM deposition, EC proliferation to new vessels and there Is an involvement of integrins

18
Q

mediators of angiogenesis diagram

A
19
Q

what is the glial scar mostly formed by

A

astrocytes

20
Q

what are M1 microglia

A
  • primary activation of the resting microglia
  • involved in the acute phase
  • neurotoxic microglia
  • neurotoxicity and tissue injury
21
Q

what are M2 microglia

A
  • delayed activation of the resting microglia
  • involved in the recovery phase
  • phagocytic microglia
  • immune suppression and tissue repair