(2) HC.3 Het epileptische netwerk Flashcards

1
Q

Elektrische synapsen
- kenmerken

A
  • verbonden dmv gap-juctions
  • weinig selectief
  • bi-directioneel
  • korte delay
  • geen drempel
  • geen blokker (behalve halothaan)
  • niet uitputbaar
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2
Q

Chemische synapsen
- kenmerken

A
  • Ca2+ kanaal open -> Ca influx -> neurotransmitter afgifte -> exocytose
  • SNARE eiwitten zorgen voor goede fusie vesicle-membraan
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3
Q

Kleine neurotransmitters (clear vesicle) (5)

A
  • Ach
  • Aminozuren
  • Biogene aminen
  • Purine
  • Gassen
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4
Q

Neurotransmitters Aminozuren

A
  • Glutamaat
  • Aspertaat
  • GABA
  • Glycine
  • D-serine
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5
Q

Neurotransmitters Biogene aminen

A
  • (Nor)Adrenaline
  • Dopamine
  • Serotonine
  • Histamine
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6
Q

Neurotransmitters Purine

A
  • ATP
  • Adenosine
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7
Q

Neurotransmitters Gassen

A
  • NO
  • CO2
  • H2S
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8
Q

Grote neurotransmitters (dense core vesicles)

A

Neuropeptiden:
- Endorfine
- Substance P
- +>100

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9
Q

Glutamaat
- excitatoir of remmend
- kenmerken

A
  • Excitatoir
  • Toxisch dus gliacellen zetten het om in glutamine
  • Ligand en G-eiwit gekoppelde kanalen
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10
Q

GABA
- excitatoir of remmend
- kenmerken

A
  • Remmende neurotransmitter
  • Interneuronen zijn GABA-erg
  • Inhibitie GABA -> epilepsie
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11
Q

Glycine
- excitatoir of inhiberend
- kenmerken

A
  • Remmende neurotransmitter
  • Vooral in ruggenmerg
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12
Q

Werking excitatoire neurotransmitter

A

als drempelwaarde wordt bereikt -> cel depolariseert

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13
Q

Werking inhiberende neurotransmitter

A

(veelal Cl)
als de kanalen open staan zal er Cl heen en weer kunnen, maar cel ligt al rond dat evenwicht -> cel veranderd niet en en dus moeilijker te veranderen

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14
Q

Ion-kanalen bij epilepsie

A

veel excitatie, inhibitie kanalen remmen -> raken verzadigd -> exciterende kanalen hebben vrij spel

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