Cade Shared "Lecture 103: Nucleic Acid and Protein Synthesis Inhibitors" - 15 Picmonics
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Lecture 103: Nucleic Acid and Protein Synthesis Inhibitors
Polymyxins
- Mechanism of Action
- Cationic
- Act Like Detergents
- Bind to Cell Membranes of Bacteria
- Disrupt Their Osmotic Properties
- Indications
- Resistant Gram-Negative Infections
- Side Effects
- Neurotoxicity
- Renal tubular necrosis
3 mins
Sulfonamides Mechanisms
- Bacteriostatic
- Gram-Positive
- Gram-Negative
- Nocardia
- Chlamydia
- PABA antimetabolites
- Inhibit dihydropteroate synthase
- Sulfamethoxazole
- Sulfisoxazole
- Sulfadiazine
1 min
Sulfonamides Side Effects
- Side Effects
- Hypersensitivity
- Nephrotoxicity
- Photosensitivity
- Kernicterus in Infants
- Displaces Warfarin from Albumin
- Considerations
- Hemolysis with G6PD Deficiency
3 mins
Protein Synthesis Inhibitors
- Drug Names
- 30S inhibitors
- Aminoglycosides
- Tetracyclines
- 50S inhibitors
- Chloramphenicol
- Clindamycin
- Erythromycin
- Lincomycin
- Linezolid
3 mins
Aminoglycosides
- Drug Names
- Gentamicin
- Neomycin for Bowel Surgery Prep
- Amikacin
- Tobramycin
- Streptomycin
- Mechanism of Action
- Bactericidal
- Inhibit Formation of Initiation Complex
- Cause Misreading of mRNA
- Require O2 for Uptake
- Resistance
- Resistance by Transferase Enzymes
- Acetylation
- Phosphorylation
- Adenylation
- Indications
- Gram-Negative Rod Infections
- Synergistic with B-Lactam Antibiotics
- Side Effects
- Nephrotoxicity Especially When Used with Cephalosporins
- Ototoxicity Especially When Used with Loop Diuretics
- Teratogen
5 mins
Chloramphenicol
- Mechanism
- Bacteriostatic
- Inhibits 50S Peptidyltransferase Activity
- Indications
- Meningitis
- Rocky Mountain Spotted Fever in Pregnant Women
- Side Effects
- Anemia
- Aplastic Anemia
- Gray Baby Syndrome due to Decreased UDP-Glucuronyl Transferase
- Resistance Caused by Plasmid Encoded Acetyltransferase
2 mins
Tetracycline Drug Names and Indications
- Drug Names
- Demeclocycline
- Minocycline
- Doxycycline
- Fecally Eliminated
- Can be Used in Renal Failure
- Indications
- Antidiuretic Hormone Antagonist
- Chlamydia
- Rickettsia
- Borrelia burgdorferi
- Helicobacter Pylori
- Mycoplasma Pneumonia
3 mins
Tetracycline Toxicities
- Inhibition of Bone Growth in Children
- Teratogen
- Discoloration of Teeth
- Photosensitivity
- GI Distress
2 mins
Tigecycline (Tygacil)
- Mechanism Of Action
- Glycylcycline Antibiotic
- Binds 30S Subunit
- Inhibits Protein Synthesis
- Indications
- Severe Infections
- Broad Spectrum Coverage
- Anaerobic & Multidrug-Resistant Organisms
- Deep Tissue Penetration
- Side Effects
- GI Distress
- Severe Nausea and Vomiting
- Considerations
- 2nd Line Agent
3 mins
Macrolides
- Mechanism of Action
- Bacteriostatic
- Bind to 23S rRNA of 50S Subunit
- Inhibit Protein Synthesis by Blocking Translocation
- Macrolides
- Erythromycin
- Azithromycin
- Clarithromycin
- Indications
- Gram-Positive Cocci
- Atypical Pneumonia
- Chlamydia
- Considerations
- Resistance by Methylation of 23S rRNA Binding
2 mins
Macrolides Side Effects
- Side Effects
- Diarrhea
- Prolonged QT Interval
- P450 Inhibitor
- Cholestatic Hepatitis
- Skin Rash
- Eosinophilia
3 mins
Linezolid (Zyvox)
- Mechanism Of Action
- Oxazolidinone Antibiotic
- Binds 23S rRNA of 50S Subunit
- Inhibits Protein Synthesis
- Indication
- Gram-Positive Organisms
- MRSA
- VRE (Vancomycin Resistant Enterococci)
- Side Effects
- Bone Marrow Suppression
- Decreased Platelet Count
- Peripheral Neuropathy
- Lactic Acidosis
- Serotonin Syndrome
- Considerations & Patient Education
- Avoid Tyramine Containing Foods
4 mins
Clindamycin
- Mechanism of Action
- Bacteriostatic
- Binds 50S Ribosomal Subunit
- Blocks Translocation
- Indications
- Anaerobic Infections above the Diaphragm
- Aspiration Pneumonia
- Lung Abscess
- Side Effects
- Can Cause Pseudomembranous Colitis
1 min
Fluoroquinolones Antibiotics
- -floxacin
- Mechanism of Action
- Inhibits Topoisomerase II & IV
- Bactericidal
- Indications
- Gram-negative Rods
- Pneumonia
- Gastrointestinal Infections
- Urinary Tract Infection
- Genital Infections
- Drugs
- Levofloxacin
- Ciprofloxacin
- Has Pseudomonas Coverage
- Considerations
- Avoid Polyvalent Cations
3 mins
Fluoroquinolones Toxicities
- Diarrhea
- Skin Rash
- Headache
- Tendon Rupture in Adults
- Myalgias in Kids
- Damage to Cartilage
- Teratogen
- QT Prolongation
1 min
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