Tylosin (phosphate)

Tylosin phosphate is a macrolide antibiotic found naturally as a fermentation product of Streptomyces fradiae. Tylosin tartrate exerts potent antimicrobial activity against Gram-positive bacteria. Tylosin phosphate is widely used as a feed additive for promoting animal growth. Tylosin phosphate is used for veterinary purposes against bacterial dysentery and respiratory diseases in poultry, pigs and cattle^[1][2][3]. IC50 & Target: Antibiotic^[1] In Vitro: Tylosin phosphate exerts antibacterial effects by binding to 23S rRNA of the bacterial ribosomal 50S subunit ^[1].
Tylosin phosphate also prevents growth of Gram-negative strains, with MICs of 64 μg/mL, 32 μg/mL, 512 μg/mL and 1 μg/mL for M. haemolytica 11935, P. multocida 4407, E. coli ATCC 25922 and E. coli AS19rlmA^I, respectively^[3].
In Vivo: Tylosin phosphate (10-500 mg/kg; s.c.) generally suppresses the elevated TNF-α and IL-1β levels and increases the IL-10 levels in the Lipopolysaccharide (LPS) -treated animals^[4].