Macrolide

Macrolide is a class of antibiotics that are used in the treatment of various bacterial infections. They are derived from Streptomyces bacteria. Macrolides work by inhibiting protein synthesis in bacteria, preventing them from growing and reproducing.

History

The first macrolide, Erythromycin, was discovered in the 1950s. Since then, several other macrolides have been developed, including Clarithromycin and Azithromycin.

Mechanism of action

Macrolides bind to the 50S subunit of the bacterial ribosome, inhibiting the translocation of peptidyl-tRNA. This prevents the addition of new amino acids to the growing peptide chain, effectively stopping protein synthesis.

Uses

Macrolides are used to treat a variety of bacterial infections, including respiratory tract infections, skin infections, and sexually transmitted infections. They are also used in patients who are allergic to penicillin.

Side effects

Common side effects of macrolides include nausea, vomiting, diarrhea, and abdominal pain. In rare cases, they can cause serious side effects like hepatotoxicity and cardiac arrhythmias.

Resistance

Bacterial resistance to macrolides is a growing concern. Resistance can occur through several mechanisms, including mutation of the 50S ribosomal subunit and efflux of the antibiotic out of the bacterial cell.

See also

• Antibiotic resistance
• Pharmacology
• Medicinal chemistry

Macrolide Resources
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