Antibiotics & Aminoglycosides U-1 | Free Notes

Antibiotic & Aminoglycosides Notes [U-1]

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Antibiotics Notes

• Antibiotics
• Classification of Antibiotics
• β-Lactam Antibiotics

Various β-Lactam Antibiotics Drugs

• Penicillin
• Cephalosporins
• β-Lactamase Inhibitors
• Monobactams (Aztreonam)

• Aminoglycosides

Various Aminoglycosides Drugs

• Streptomycin
• Neomycin
• Kanamycin

• Tetracyclines

Various Tetracyclines Drugs

• Tetracycline
• Oxytetracycline
• Chlortetracycline
• Minocycline
• Doxycycline

UNIT– I: Antibiotics Notes – Summary

1. Historical Background Antibiotics are substances that inhibit or kill microorganisms. Penicillin, discovered by Alexander Fleming in 1928, was the first widely used antibiotic.
2. Nomenclature Based on chemical structure, source (natural/semi-synthetic), and microbial target. Includes suffixes like -cillin, -mycin, -cycline.
3. Stereochemistry Stereochemistry influences binding affinity and biological activity. Specific 3D arrangements are crucial for efficacy and resistance avoidance.
4. Structure-Activity Relationship (SAR) Modifications in structure can alter potency, spectrum, and resistance profile. SAR guides drug design and improvement.
5. Chemical Degradation Classification Antibiotics can degrade via hydrolysis, oxidation, or isomerization. Stability depends on storage and chemical structure.
6. Important Classes and Products β-Lactam Antibiotics: Penicillin, Cephalosporins, Monobactams, β-Lactamase Inhibitors Aminoglycosides: Streptomycin, Neomycin, Kanamycin Tetracyclines: Tetracycline, Oxytetracycline, Minocycline, Doxycycline