@article{MAKHILLJAVA20098101814, title = {Pharmacokinetics and Penetration into the Aqueous Humor of Long Action Oxytetracycline after Single Dose Intravenous and Intramuscular Administrations in Rabbits}, journal = {Journal of Animal and Veterinary Advances}, volume = {8}, number = {10}, pages = {1900-1905}, year = {2009}, issn = {1680-5593}, doi = {javaa.2009.1900.1905}, url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2009.1900.1905}, author = {Feride,Ozgur,Zafer,Elif and}, keywords = {Oxytetracycline,rabbit,aqueous humor,pharmacokinetics,plasma,intravenous}, abstract = {The aim of this study was to investigate pharmacokinetics and penetration into the aqueous humor of Long Action Oxytetracycline (OTC-LA) after Intravenous (IV) and Intramuscular (IM) administrations, at a single dose of 20 mg kg-1 b.wt in rabbits. After administrations of the long action formulation, the plasma oxytetracycline concentrations were evaluated using a two-compartmental open model. The study was designed according to a two-period cross-over and the plasma OTC concentration was measured using the ELISA procedure. The elimination half-lives (t1/2β) of the OTC-LA after IV and IM administrations were 12.60±0.92 and 38.67±4.40 h, respectively. After IV administration, the volume of distribution (Vdss) and total body Clearance (Cltot) values of the drug were 3.42±0.21 L kg-1 and 0.19±0.01 L/h/kg, respectively. The maximum concentration of the drug (Cmax) in the plasma (4.23±0.43 μg mL-1) was achieved at 2.0 h (tmax) after IM administration. The Minimum therapeutic plasma Concentration (MIC) of the drug at the amount ≥0.5 μg mL-1 was maintained until 48 h after IV and IM administrations. The intramuscular bioavailability of the drug was 0.79±0.10%. After IV and IM administrations of OTC-LA formulation, the maximum concentrations of the drug in the aqueous humor were 0.1 and 0.068 μg mL-1, respectively. However, the concentrations of the drug in the aqueous humor were below the MIC value (0.5 μg mL-1) during 12-72 and 4-48 h for IM and IV administrations, respectively.} }