[Comparative study of the character of cefazolin pharmacokinetics between Neijiang pig and human].
OBJECTIVE
To study the character of cefazolin (CEZ) pharmacokinetics on Neijiang pig and human.


METHODS
The serum concentration of CEZ in 8 normal Chinese adult men, 9 of 8-month male Neijiang pigs and 5 of 4-month male Neijiang pigs were detected by high-performance liquid chromatography (HPLC).


RESULTS
The pharmacokinetic parameters suggested that two-compartment model was found in all groups after intramuscular injection of CEZ. In normal men, 8-month pigs and 4-month pigs, the peak time (Tmax) was (58.8 +/- 13.0), (19.7 +/- 9.9) and (18.2 +/- 8.6) min respectively, T1/2 alpha was (42.3 +/- 19.7), (19.0 +/- 7.7) and (9.3 +/- 1.9) min, the peak concentration (Cmax) was (101.6 +/- 14.6), (28.7 +/- 9.0) and (23.5 +/- 4.6) mg/L; Vd was (0.096 +/- 0.016), (0.374 +/- 0.184) and (0.386 +/- 0.211) L/kg; T1/2ka was (22.5 +/- 6.8), (8.6 +/- 4.8) and (10.6 +/- 10.2) min; T1/2 beta was (117.3 +/- 8.6), (84.2 +/- 9.8) and (45.1 +/- 11.5) min; clean rate of plasma Cl was (0.8 +/- 0.1), (6.8 +/- 1.2) and (11.0 +/- 3.0) ml/kg.min; AUC was (21,803 +/- 4,145), (2,407 +/- 443) and (1,636 +/- 685) mg.min/L.


CONCLUSIONS
It could conclude that the Neijiang pigs could eliminate CEZ effectively, but the absorption, distribution and elimination of CEZ in pigs were quicker than that of in human while the absorption from muscle in both pig groups were lower than that in human.
Cai
S H
SH
Department of Pharmacology, West China University of Medical Sciences, Chengdu, Sichuan, P. R. China 610041.
Xiong
W B
WB
Li
Y P
YP
D000328:Adult; D000818:Animals; D002437:Cefazolin / Q000097:blood / Q000493:pharmacokinetics*; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D007273:Injections, Intramuscular; D008297:Male; D013552:Swine / Q000097:blood / Q000378:metabolism*
D002437:Cefazolin