Tiamulin

Tiamulin

Chemical structure of Tiamulin

Tiamulin is a pleuromutilin antibiotic used in veterinary medicine primarily for the treatment of bacterial infections in livestock. It is particularly effective against Gram-positive bacteria and certain mycoplasma species. Tiamulin is derived from the natural compound pleuromutilin, which is produced by the fungus Clitopilus passeckerianus.

Mechanism of Action

Tiamulin works by inhibiting bacterial protein synthesis. It binds to the 50S subunit of the bacterial ribosome, thereby preventing the translocation of peptidyl-tRNA from the A-site to the P-site. This action effectively halts the growth of the bacteria, leading to their eventual death. The specific binding site of tiamulin on the ribosome is distinct from that of other antibiotics, which contributes to its effectiveness against resistant strains.

Uses in Veterinary Medicine

Tiamulin is primarily used in the treatment of swine and poultry. In swine, it is effective against swine dysentery, caused by Brachyspira hyodysenteriae, and enzootic pneumonia, caused by Mycoplasma hyopneumoniae. In poultry, tiamulin is used to treat chronic respiratory disease caused by Mycoplasma gallisepticum and Mycoplasma synoviae.

Administration

Tiamulin can be administered orally, either in feed or drinking water, or by injection. The dosage and method of administration depend on the type of infection and the species being treated. It is important to follow veterinary guidance to ensure effective treatment and to minimize the risk of antibiotic resistance.

Safety and Side Effects

Tiamulin is generally well-tolerated in animals, but it can cause adverse reactions if used in conjunction with certain other drugs, such as ionophores. These interactions can lead to toxicity, particularly in swine. Common side effects include reduced feed intake and mild gastrointestinal disturbances.

Related Pages

• Antibiotic
• Pleuromutilin
• Veterinary medicine
• Bacterial infection