Tetracyclines Flashcards

1
Q

MOA of tetracyclines

A

Connect to 30s, effect 50s, tRNA won’t connect to A site

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2
Q

Resistance to tetras

A
  • خروج دارو efflux
  • آنزيم های تخریبی
  • تغییر جایگاه ریبوزومی
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3
Q

Spectrum of tetras

A
  • Static
  • +, -, Anaerobics
  • Rickettsia, Chlamydia, Mycoplasma, Malaria, Entamoeba
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4
Q

Interaction of tetras

A
  • یون های فلزی دو یا چند ظرفیتی
  • با غذا (به جز داکسی و مینو)
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5
Q

Clearance of tetras

A
  • Renal and Biliary
  • Doxy & Mino Biliary then Fecal
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6
Q

Half life of tetras

A
  • Short: Tetra
  • Long: Doxy & Mino
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7
Q

Minocycline

A
  • نفوذ خوب
  • تغلیظ در مايعات بدن
  • ناقلین مننگوکوک
  • ریفامپین داروی اصلی ناقلین مننگوکوک
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8
Q

Demeclocycline

A

NOT used as Ab now
Has Anti ADH effect

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9
Q

Tetras clinical use

A
  • Cholera
  • Rickettsia & Chlamydia
  • First steps of Lyme (Borrelia)
  • Mostly 2nd line of Ab
  • Severe & Prolonged acne
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10
Q

Tetra Side effects

A

1- Renal & Hepatic
2- GI when eaten
3- Phlebitis in inj
4- Teratogenic
5- Sedimentation with Ca (Teeth, Bones) in Children
Contraindicated under 8yrs
6- Photosensitivity
7- Esophagitis

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11
Q

Tigecycline

A
  • نفوذ خوب به همه جا
  • فقط تزریقی
  • عارضه کلیوی
  • روی MRSA, VRSA, استرپ مقاوم به pen، انتروکوک مقاوم به ونکو
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