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    Concentrations of sulfadoxine and trimethoprim in plasma, lymph fluids and some tissues 24 H after intramuscular administration to angora goats
    (TAYLOR & FRANCIS LTD, 1998) Tras, B; Elmas, M; Yazar, E; Bas, AL; Keskin, E; Dasci, Z
    This study was carried out to determine the concentrations of sulfadoxine and trimethoprim in plasma, lymph, and some tissues in goats after administration of a single recommended therapeutic dose. Five healthy, adult Angora goats were used. The drug combination, containing 200 mg sulfadoxine and 40 mg trimethoprim per millilitre, was given as a single IM injection at the recommended dose level, 15 mg/kg body weight for sulfadoxine and 3 mg/kg body weight for trimethoprim. The goats were slaughtered 24 hours after drug administration and samples were taken from liver, bone marrow, pelvic limb muscles, hepatic, thoracic duct, and the pelvic limb lymph fluids for analysis of drug concentrations by HPLC. The concentrations of trimethoprim in bone marrow, liver, pelvic limb muscles, hepatic lymph, the pelvic limb lymph, and thoracic duct lymph were found to be 6, 5, 4, 2, 5 and 15 times higher than those of plasma, respectively. Although the sulfadoxine concentrations in bone marrow, pelvic limb muscles, and liver were 2, 3 and 2 times higher than the plasm concentrations, respectively, the sulfadoxine concentrations in hepatic lymph, the pelvic limb lymph, and thoracic duct lymph were lower than those of plasma. The results show that the trimethoprim concentrations in lymph fluids were quite similar to those in tissues. However, the sulfadoxine concentrations in lymph fluids were different in each tissue.