Chloramphenicol, polymyxin Flashcards Preview

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Flashcards in Chloramphenicol, polymyxin Deck (7)
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1
Q

Chloramphenicol MoA

A

binds 50S subunit inhibits protein synth

2
Q

Chloramphenicol spectrum and indications

A

The first really broad spectrum

Severe SEs limits its use currently to:
Brain abscesses
Mixed resistant infections
Meningitis
Ricketsioisis in children
3
Q

Chloramphinicol SEs

A

Gray baby syndrome
inadequate glucuronidation/elimination of the drug causes accumulation, interferes with mitochondrial human ribosomes.
Respiratory depression, hypoxia death

Dose dependent aplastic anemia
Hemolytic anemia in G6PDH def.

Interactions: Inhibits CYP. Increasing Warfarin and phenytoin concentrations.

4
Q

Polymyxin - what are the drugs

A

A MIX of POLYpeptides

Polymyxin B -
Polymyxin E - colistin

5
Q

Polymyxin MoA

A

binds membrane polypeptides creating pores

6
Q

Polymyxin spectrum and indications

A

Against most G-neg bact.

Uses: Against P. aeruginosa or other significant pulmonary infections. Esp in Cystic fibrosis.

7
Q

Polymyxin SEs

A

Nephrotoxicity

Neurotoxicity