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Drugs acting on ion channel
Descrição
pharmacology Mapa Mental sobre Drugs acting on ion channel, criado por Ha Mi Vu em 05-12-2016.
Sem etiquetas
drugs
na channel
local anesthetics
pharmacology
Mapa Mental por
Ha Mi Vu
, atualizado more than 1 year ago
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Criado por
Ha Mi Vu
mais de 7 anos atrás
64
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Resumo de Recurso
Drugs acting on ion channel
Importance of ion channels
Neuronal excitability - action potential neurotransmitters
coupling contraction- muscle (NMJ)
control the volume - prevent from swelling
Mutation in channels can lead to channelopathies - LQ syndrome
animal venom - blocking neurotoxin
dendrotoxin
W-agatoxin IV and W-agatoxin IIIA
apamin
Puffer fish has TTX in the intestines
Mechanisms of ion channel modulation - TTX
sy,mbiotic organism
Block Na Channel
Na channel mechanism
Guanidium moiety
Puffer fish has Glutamate on 387 - does not get affected
cardiac Na channel
385, (cys) 387(glutamine), 388 (Arg)
Local Anesthetics
Two groups - aromatic ring + ester(procaine)/amide (lidocaine)
Hydrophilic pathway
LA block when Na channel is open
Hydrophobic pathway
LA enters when channel inactivated
pore portals
Unwanted effects
CNS
cardiovascular
Binds to F1759 ub Nav1.5
physical block
electrostatic repulsion
Other drugs acting on channel
Anticonvulsants - carbazepine
Class I antidyshythmic drugs
Dihydropyrifine - Ca antagonist
Tolbutamine - BK channel
isoflurane - two K pore domain
Anexos de mídia
b75c257f-594a-425f-8a8c-fe32eda625d3 (image/png)
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