Table 1 Pharmacokinetic parameters in sheep given ceftizoxime alone (Group I) and meloxicam co-treatment (Group II). Parameter
* P<0.05; **P<0.01Group I, Only Ceftizoxime; Group II: Ceftizoxime + MeloxicamA, zero time drug concentration at distribution phase; B, zero time drug concentration at elimination phase; α, regression coefficient fordistribution phase; β, regression coefficient for elimination phase; Cp 0, theoretical zero time plasma drug concentration; t α, half life of
distribution phase; t β, half life of elimination phase; AUC, area under the plasma concentration curve; MRT, mean residual time ; Cl total
, volume of distribution in total area under curve; K rate of drug diffusion from peripheral to central compartment; K ,
rate of drug diffusion from the central to peripheral compartment; K / K , elimination rate constant from central compartment; P/C, drug
concentration ratio in peripheral/central compartment.
Distribution of drug begins, as soon as it enters
suggested that higher CZX concentration was present in
to blood circulation and it is completed when the drug has
peripheral compartment of animals given CZX alone. This
reached all possible sites. Obviously, volume of distribution
may be due to reduced tissue distribution of CZX in
meloxicam co-treated animals. However, the mean values
properties of the drug. In the present study, Vd
of P/C ratio of CZX observed in the present investigation
II was lower than group I. It may be possible that
were much lower than P/C ratio for ceftriaxone in buffalo
administration of meloxicam along with CZX affected the
distribution of drug and most of the drug (CZX) remained
From the present study, it can be concluded that
in systemic circulation and was not transferred in other
meloxicam co-treatment enhances the plasma
body fluids. Probencid co-treatment was reported to alter
concentration of CZX possibly by reducing its tissue
the pharmacokinetics of CZX (Le Bel et al., 1983). It
distribution. However, meloxicam administration has no
increased area under the serum concentration time curve
effect on half life of CZX. Further studies are required to
by 49%. In the present study also, AUC of CZX was about
elucidate the underlying mechanisms behind present
22% higher in animals co-treated with meloxicam in
comparison to animals given CZX alone.
In the present study Cl was lower in group II
REFERENCES
animals. Value of Cl depends on rate of blood flow and
Ahangar, A.H. and Srivastava, A.K. (2000).
concentration of drug. Therefore, it may be possible that
Pharmacokinetics of enrofloxacin in febrile
administration of meloxicam along with CZX might have
crossbred bovine calves. Indian J. Pharmacol.32:
decreased hepatic blood flow. However, in a study, Lode
et al. (1983) observed much higher value of Cl
Baggot, J.D. (1977). Principles of drug disposition in
(151.00±33.00 ml/kg/min) for CZX in man than that observed
domestic animals. In: The Basis of Veterinary
in the present study. This may be due to multiple doses of
Clinical Pharmacology, 1st Edn. W.B. Saunders
CZX given in that experiment as well as species variation
Dardi, M.S., Sharma, S.K. and Srivastava, A.K. (2005).
The P/C ratio observed in the study indicated that
the distribution of the drug to various tissues in both groups
ceftriaxone in E coliLipopolysaccharide induced
were sufficient to combat the infection (Ahangar et al.,
fever in buffalo calves. J. Vet. Sci. 6: 147-150.
2000). Comparatively higher value of P/C ratio in group I
Deleforge, J., Thomas, E., Davot, J.L. and Boisrame, B.
24 Journal of Veterinary Pharmacology and Toxicology/December 2009/Vol.8/Issue 1-2/22-25
(1994). A field evaluation of the efficacy of
Raoff-Jr, W.W. and Sams, R.A. (1985). Pharmacokinetics
tolfenamic acid and oxytetracycline in the
and bioavailability of cephalothin in horses and
treatment of bovine respiratory disease. J. Vet.
mares. Am. J. Vet. Res. 46: 2085-2090. Pharmacol. Ther. 17: 43-47.
Richards, D.M. and Heel, R.C. (1985). Ceftizoxime: A
Dumka V.K., Singh, H. and Srivastava, A.K. (2008).
review of its antibacterial activity pharmacokinetic
Disposition kinetics and urinary excretion of
properties and therapeutic use. Drugs.29: 281-
levofloxacin on concomitant administration with
meloxicam in crossbred calves. Environ. Toxicol.
Rule, R., Lacchini, R., Quiroga, G., Moreno, L-de and
Phar. 26: 56-60.
Buschiazzo, P. (2000). Pharmacokinetics and
Euller-Ziegler L. and Velicitat, P. (2001). Meloxicam : A
penetration into tissue fluid of ceftizoxime in
review of its pharmacokinetics, efficacy and
normal and hyperthermic sheep. Small Ruminant
tolerability following intramuscular administration.Res. 37: 43-49. Inflamm. Res. 50: S5 –S9.
Shakthidevan, R. K., Jha, K. C., Das, S. K., Chatterjee,
Facca, B., Frame, B. and Triesenberg, S. (1998).
U. S., Chakraborty, A. K. and Mandal, T. K. (2005).
Population pharmacokinetics of ceftizoxime
Effect of induced surgical stress and acute renal
administered by continuous infusion in clinically
failure on disposition kinetics of ceftizoxime in
ill adult patients. Antimicrob. Agents Chemoth.
goats. Indian J. Pharmacol., 37(3): 186-188. 42: 1783-1787.
Shukla, M., Singh, G., Sindhura, B.G., Telang, A.G., Rao,
LeBel, M., Paone, R. P. and Lewis, G. P. (1983). Effect of
G.S. and Malik, J.K. (2007). Comparative plasma
probencid on the pharmacokinetics of ceftizoxime.
pharmacokinetics of meloxicam in sheep and
Antimicrob. Chemoth. 12 : 147-156.
goats following intravenous administration. Comp.
Lode, H., Warns, H., Kemmerich, B., Knothe, H. and
Biochem. Phy. C. 145: 528-532.
Koeppe, P. (1983). Pharmacokinetics of multiple
Singh, R., Chaudhary, R.K. and Dumka V.K. (2008).
doses of ceftrizoxime and their influence on fecal
Influence of paracetamol on the pharmacokinetics
flora. Eur. J. Clin. Microbiol. 2: 116-121.
and dosage regimen of ceftizoxime in crossbred
Muller, F.O., Middle, M.V., Schall, R., Terblanche, J.,
calves. Israel J. Vet. Med.63: 72-76.
Hundt, H.K.L. and Groenewoud, G. (1997). An
Snedecor, G.W. and Cochran, W.G. (1994). Statistical
evaluation of the interaction of meloxicam with
Methods, 9th edn., Iowa State Univ. Press,
frusemide in patients with compensated chronic
cardiac failure. Brit. J. Clin. Pharmaco. 44: 393-
Ziv, G. (1992). Treatment of peracute and acute mastitis.
In: Hinchcliff, K.W., Jernigan, A.D. (Eds.), The
Notari, R.E. (1980). Biopharmaceutics and Clinical
Veterinary Clinics of North America- Applied
Pharmacokinetics, 3rd edn, Marcel Dekkar, I.N.C.,
Pharmacology and Therapeutics II. W.B. Saunders
Journal of Veterinary Pharmacology and Toxicology/December 2009/Vol.8/Issue 1-2/22-25
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COAMATIC® Protein C - 82 2098 63 ENGLISH - Insert revision 12/2002 Intended use Specimen collection Calculation This kit is for the quantitative determination of Protein C activity in human citrated plasma. Nine parts of freshly drawn venous blood are collected into one part trisodium citrate. Plot the absorbance (A) for the standard samples against their protein C activity on B