Protein synthesis inhibitors Flashcards
What is the Pharmacokinetics of aminoglycoside ?
1- Not absorbed orally
2- Neomycin is not given parenterally
3- or orally for bowel preparation prior to colorectal surgery
3- no CNS penetration
Why we are preferring the use of single large daily dose of aminoglycosides ?
1- Bacteria killing effect of aminoglycosides depends on peak plasma concentration
2- Post antibiotic effect
What is the uses of aminoglycosides ?
1- Serious gram negative bacillary infection such as Escherichia coli
2- Staph.aureus infection
3- Eradication of facultative gut flora
4- Cystic fibrosis
What is the adverse effects of aminoglycosides ? ( Non )
1- Nephrotoxicity
2- ototoxicity
3- Neuromuscular blockade
What is the drug that has a half-life of 36 hours ?
Tigecycline
Doxycycline and Minocyclinene is absorped -95-100% and it is ?
No food interaction
Avoid antacids or dairy products along with ?
tetracyclines or give 1-3 hours apart
What is the drug that attains high concentration in tears and saliva and suitable for the treatment of meningococcal carrier state ?
Minocycline
Minocycline is uses for ?
meningococcal carrier state
What is the contra indication of Tetracycline ?
during pregnancy and lactation
What is the drug that contraindicated during pregnancy and lactation ?
Tetracycline
What is the Adverse effects of Tetracycline ?
1- Effects on calcified tissues (Teeth and bones)
2- Fanconi Syndrome
3- Fatal hepatotoxicity
Whatvis the Contraindications of tetracyclines ?
1- pregnant
2- breast-feeding women
3- children less than 8 years
What is the drug that has a half-life of 36 hours ?
Tigecycline
In the Pharmacokinetics of Tetracyclines the Doxycycline and Minocycline -95-100% is ?
No food interaction
What is the products that must Avoid with tetracyclines ?
Avoid antacids or dairy products
Avoid antacids or dairy products along with tetracyclines or give ?
1-3 hours apart
What is the drug of meningococcal carrier state ?
Minocycline
Minocycline attains high concentration in tears and saliva and suitable for the treatment of ?
meningococcal carrier state
What is the drug that preferred in patients with renal
dysfunction, as it is primarily eliminated via the bile into the feces ?
Doxycycline
What is the Clinical uses of Tetracyclines ? ุญูุช ูุฑูู ุจุงุดุง
1- chlamydiae
2- rickettsiae
3- cholera
4- brucellosis
What is the adverse effects of tetracyclines ?
1- Fanconi Syndrome
2- Effects on calcified tissues (Teeth and bones)
3- Fatal hepatotoxicity
What is the Adverse effects of Tigecycline ?
1- Pancreatitis
2- Hepatotoxicity
Chloramphenicol ?
Binds reversibly to the 50S ribosomal subunit .
What is the Clinical uses of chloramphenicol ?
Fever,headache,Rash,Nauea.,vomiting,
What is the Adverse effects of chloramphenicol ? ุฌุจุณ
1- Grey baby syndrome
2- GIT disturbances
3- Bone marrow depression
4- Superinfection
In the Erythromycin Pharmacokinetics the drug is distributed widely except to the ?
brain and cerebrospinal fluid
It cross the placenta and reaches the fetus ?
Erythromycin
What is the Clinical uses of Erythromycin ?
1- Alternative to penicillin in hypersensitive patients
2- Acne (topical)
What is the drug is safest for the treatment of MRSA in a pregnant patient ?
Clindamycin
What is the Adverse effects of Clindamycin ?
Pseudo-membraneous colitis (Clostridium difficileโassociated diarrhea )
They inhibiting the formation of the 70S ?
Linezolid and tedizolid
What is the drug that does have coverage against resistant S. pneumoniae ?
Linezolid
We use aminoglycosides in Endocarditis with ?
ampicillin/ vancomycin
We use aminoglycosides in Meningitis in ?
1- combination with cell wall synthesis inhibitors
2- intrathecal/ intraventricular
aminoglycosides is Contraindicated in patients with ?
Myasthenia gravis, Hypocalcaemia
Bind 30 s ribosomal subunit ?
1- aminoglycosides
2- Tetracycline
What is the Mechanism of Action of Tetracyclines ?
1- Binds reversibly to 30S ribosomal subunit
2- Blocks binding of tRNA to the acceptor site and inhibits protein synthesis
What is the drug of tetracyclines ?
Tetracycline, Oxytetracycline, Doxycycline
What is the Short-acting of tetracycline ?
1- tetracycline
2- chlortetracycline
What is the Intermediate-acting of tetracycline ?
1- demeclocycline
2- methacycline
What is the Long-acting of tetracycline ?
1- doxycycline
2- minocycline
Uses of Tetracyclines ?
ูุฑูู ุจุงุดุง 1- chlamydiae 2- rickettsiae 3- cholera 4- brucellosis
Binds reversibly to the 50S ribosomal subunit ?
Chloramphenicol
Grey baby syndrome is the Adverse effects of ?
chloramphenicol
Binds with 50S ribosome ?
1- Macrolides
2- Clindamycin
inhibiting the formation of the 70S ?
Linezolid and tedizolid
What is the contraindication of erythromycin !
Hepatic dysfunction
Erythromycin is an inhibitor of ?
Hepatic microsomal CYP-450
What is the drug that combination with non absorbable erythromycin ?
Neomycin
What is the drug that reduces colonization of
Pseudomonas L
Daily inhalation of Tobramycin
What is the Adverse effects of aminoglycosides ?
1- Nephrotoxicity
2- ototoxicity
3- Neuromuscular blockade
4- Contraindicated in patients with : Myasthenia gravis, Hypocalcaemia
Erythromycin is an inhibitor of hepatic microsomal ?
CYP-450