Effect of meloxicam co-treatment on pharmacokinetics of ceftriaxone in sheep
2012
Ranjan, Rajeev | Ranjan, Amita | Roy, Birender Kumar | Prasad, Raju
In the present study, effect of meloxicam co-treatment on pharmacokinetic parameters of ceftriaxone (CTRX) was investigated in sheep. Plasma CTRX concentration in meloxicam co-treated animals (G-II) remained higher than in animals given CTRX alone (G-I). Pharmacokinetic analysis revealed that regression coefficient for distribution phase (á), half-life of distribution phase (t1/2á), rate of drug diffusion from peripheral to central compartment (K12), elimination rate constant from central compartment (Kel) and periphera/central compartment drug concentration ratio (P/C) did not differ significantly between the two groups. In G-II, volume of distribution in area under curve (Vdarea)and total body clearance (ClB) were lower, while area under the plasma concentration (AUC) curve was higher than G-I. Comparatively higher value of P/C ratio suggested higher tissue CTRX concentration in G-II. It can be concluded that meloxicam co-treatment enhances the plasma concentration as well as tissue distribution of ceftriaxone.
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