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BMed3.3 - Pharmaco
> 2. Antituberculeux > Flashcards
2. Antituberculeux Flashcards
(4 cards)
Study These Flashcards
1
Q
Rifampicine
A
antibio macrocyclique
liaison à ARN polym. bact., bloc transcription
efficacité : m. tuberculosis, gram+ (s. aureus), gram-(pseudomonas)
résistances : mutations, délétion gène cible (rpoB)
cinétique : p.o., substrat CYP3A4
effets indésirables : hypersensi, toxique hép., dyscolor. orange urines, inter. médic.
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2
Q
Isioniazide
A
activation par KatG (catalase peroxydase), inhibe synth. acides mycoliques, altération de la membrane, inhibe DHFR
efficacité : m. tuberculosis contre forme active
résistances : pas de résist. croisées ac autres anti-tbc
cinétique : absorption rapide, biodisp 100%, diff dans tous les compartiments liq et cell, élimination rénale de métabolites
effets indésirables : hypersensi, polynévrites, troubles neuro, hépatotoxique, surdosage fatal
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3
Q
Pyrazinamide
A
promédic nécéssite déamination
bactériostatique (sur bact à forte croissance)
résistance : perte d’activité des pyrazinamidases (plus de déamination)
cinétique : métanolisme en PZA et élim rénale de PZA
effets indésirables : hépatotoxicité, hyperuricémie
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4
Q
Ethambutol
A
bactériostatique (inhibe la croissance mais ne tue pas)
inhibe synth. de paroi cell
résistance : ++ si utilisé seul
cinétique : excrétion rénale
effets indésirables : névrite optique, hyperuricémie, hypersensi (rare)
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BMed3.3 - Pharmaco
flashcards
Decks in class (5)
# Cards
1. Antibiotiques
15
2. Antituberculeux
4
3. Antifongiques
4
4. Antiviraux
6
5. Immunosuppresseurs
9