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Samenvatting Farmacologie Deel 3 - 2025

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Deze samenvatting behandelt Farmacologie Deel 3 uit de Bachelor Geneeskunde aan KU Leuven, specifiek gericht op geneesmiddelen die inwerken op het centraal zenuwstelsel. Het document behandelt gedetailleerd de farmacotherapie van depressie, inclusief antidepressiva, werkingsmechanismen (SSRI's, noradrenerge en serotonerge remming), en relevante bijwerkingen en indicaties.

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FARMACOLOGIE DEEL 3
GENEESMIDDELEN DIE INWERKEN OP HET CZS




MINNE CASTEELS EN JAN DE HOON




Inhoudsopgave
H1: FARMACOTHERAPIE VAN DEPRESSIE.........................................................4
NEUROBIOLOGISCHE OORZAAK................................................................................................5
WERKINGSMECHANISME ANTIDEPRESSIVA..................................................................................5
ANTIDEPRESSIVA................................................................................................................... 6
INDICATIES........................................................................................................................ 10
H2: FARMACOTHERAPIE VAN PSYCHOSE EN MANIE.........................................11
INLEIDING......................................................................................................................... 11
PSYCHOSE: ANTIPSYCHOTICA................................................................................................. 12
werkingsmechanisme.................................................................................................13
nevenwerkingen......................................................................................................... 13
farmacokinetiek......................................................................................................... 15
farmacodynamiek...................................................................................................... 15
Indicaties.................................................................................................................... 15
Contra-indicaties........................................................................................................ 16
interacties.................................................................................................................. 16
de praktijk van het opstarten van antipsychoticum....................................................16
MANIE: LITHIUM................................................................................................................. 17
Werkingsmechanisme................................................................................................17
Farmacokinetiek......................................................................................................... 17
Bijwerkingen............................................................................................................... 18
Indicatie..................................................................................................................... 18
Contra-indicaties........................................................................................................ 18
Interacties.................................................................................................................. 19
Intoxicatie.................................................................................................................. 19
Alternatieven.............................................................................................................. 19
H3: FARMACOTHERAPIE VAN EPILEPSIE.........................................................21
INLEIDING......................................................................................................................... 21
ANTI-EPILEPTICA DIE WERKEN VIA BLOKKERING VAN NA+ KANALEN..............................................22
ANTI-EPILEPTICA DIE WERKEN VIA GABA.................................................................................26
Fenobarbital en primidon...........................................................................................26
Benzodiazepines........................................................................................................ 27
Tiagabine, vigabatrine, gabapentine, pregabaline.....................................................27

, ANTI-EPILEPTICA DIE WERKEN VIA T-TYPE CA2+ KANALEN..........................................................28
ANDERE ANTI-EPILEPTICA..................................................................................................... 28
GEBRUIK VAN ANTI-EPILEPTICA: BEMERKINGEN..........................................................................29
H4: FARMACOTHERAPIE VAN ZIEKTE VAN PARKINSON EN PARKINSONISME.....30
INLEIDING......................................................................................................................... 30
FARMACOKINETIEK L-DOPA.................................................................................................. 32
Plasma T1/2................................................................................................................ 32
Resorptie.................................................................................................................... 32
Interacties.................................................................................................................. 32
BIJWERKINGEN.................................................................................................................... 32
L-DOPA....................................................................................................................... 32
D2-agonisten.............................................................................................................. 33
COMT-inhibitoren....................................................................................................... 33
MAO-B inhibitoren...................................................................................................... 33
Antimuscarinica.......................................................................................................... 34
Apomorfine................................................................................................................. 34
Andere behandelingen............................................................................................... 34
H5: FARMACOTHERAPIE VAN ANDERE BEWEGINGSSTOORNISSEN....................34
TREMOR........................................................................................................................... 34
MEDICATIE-GEÏNDUCEERDE DYSKINESIE/DYSTONIE.....................................................................34
RESTLESS LEGS SYNDROOM.................................................................................................. 35
H6: SKELETSPIERRELAXANTIA.......................................................................35
INWERKING OP CZS............................................................................................................ 36
Diazepam................................................................................................................... 36
Baclofen..................................................................................................................... 36
Tizanidine................................................................................................................... 36
Riluzol........................................................................................................................ 36
INWERKING OP SPIERWEEFSEL............................................................................................... 36
Dantroleen................................................................................................................. 36
INWERKING OP SYNAPS........................................................................................................ 37
Botulinetoxine............................................................................................................ 37
Curares....................................................................................................................... 37
H7: FARMACOTHERAPIE VAN DE ZIEKTE VAN ALZHEIMER...............................37
INLEIDING......................................................................................................................... 37
NEUROBIOLOGISCH MECHANISME VAN AD...............................................................................38
ACHE-INHIBITOREN............................................................................................................ 39
NMDA-ANTAGONIST........................................................................................................... 40
H8: FARMACOTHERAPIE VAN PIJN..................................................................40
OPIOÏDE ANALGETICA.......................................................................................................... 41
Structuur.................................................................................................................... 42
werkingsmechanisme.................................................................................................42
farmacokinetiek......................................................................................................... 44
zuivere opioïd-agonisten............................................................................................45
partiële opioïd agonisten en gemengde agonist-antagonisten...................................50
opioïd-antagonisten.................................................................................................... 50
LOKALE ANESTHETICA.......................................................................................................... 51
opbouw...................................................................................................................... 51
werkingsmechanisme.................................................................................................51

, Farmacokinetiek......................................................................................................... 52
Farmacodynamiek...................................................................................................... 53
FARMACOTHERAPIE VAN KANKERPIJN: WGO RICHTLIJNEN............................................................54
FARMACOTHERAPIE VAN NEUROPATHISCHE PIJN.........................................................................55
H9: HYPNOTICA – ANXIOLYTICA.....................................................................56
INLEIDING......................................................................................................................... 56
BENZODIAZEPINES.............................................................................................................. 56
Structuur.................................................................................................................... 57
Werkingsmechanisme................................................................................................57
Farmacologische effecten benzo’s.............................................................................58
Ongewenste effecten benzo’s....................................................................................59
Farmacokinetiek benzo’s............................................................................................ 61
Indicaties benzo’s....................................................................................................... 62
Contra-indicaties benzo’s...........................................................................................63
Bijzonderheden ivm benzodiazepine-therapie............................................................63
Z-DRUGS: ANALOOG AAN BENZODIAZEPINES............................................................................63
FLUMAZENIL: BENZODIAZEPINE-ANTAGONIST............................................................................64
SS-BLOKKERS..................................................................................................................... 64
HISTAMINE H1-RECEPTORBLOKKERS.......................................................................................64
ANTIDEPRESSIVA................................................................................................................. 65
FYTOTHERAPEUTICA............................................................................................................ 65
MELATONINE..................................................................................................................... 65
BARBITURATEN................................................................................................................... 66

, H1: FARMACOTHERAPIE VAN DEPRESSIE

De Hoon!

 Depressie = chronische, terugkerende en potentieel levensbedreigende
aandoening
o Incidentie 20% wereldwijd
o Top 10 oorzaken van morbiditeit en mortaliteit door suïcide
 Diagnose
o Tenminste één van deze symptomen
 Gedeprimeerd gevoel
 Verlies aan interesse of plezier
o Bijkomend minstens 4 van de onderstaande symptomen gedurende meer
dan 2 weken
 Gewichtsverandering
 Slaapstoornissen
 Psychomotorische agitatie of retardatie
 Vermoeidheid of futloosheid
 Waardeloosheidsgevoel, schuldgevoel
 ‘Executive dysfunction’
 Suïcidale gedachten
 Antidepressiva
o Orthosympathicus
 Remmen van NET waardoor minder opname en hogere tonus NA in
synaptische spleet
o Serotonerge synaps
 Remmen van SERT waardoor minder opname en hogere tonus
serotonine in synaptische spleet

SSRI TCA SNRI MAO-I
-enkel SERT -Zowel SERT als -Zowel SERT als -Remmen van MAO-
blokkeren NET blokkeren NET blokkeren enzyme (rol in
afbraak van NA en
-SELECTIEF -NIET SELECTIEF -NIET SELECTIEF, serotonine)
-invloed op andere maar geen invloed
systemen op andere
(muscarine-R, alfa- systemen
R, histamine-R) 
bijwerkingen

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