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Plasma Concentration of Phencynonate Hydrochloride in Dogs by HPLC-MS/MS and Its Pharmacokinetic Study / 中国药房
China Pharmacy ; (12): 3912-3914,3915, 2015.
Article in Chinese | WPRIM | ID: wpr-605391
ABSTRACT

OBJECTIVE:

To determine the plasma concentration of Phencynonate hydrochloride(PCH)in dogs,and to calcu-late pharmacokinetic parameters.

METHODS:

6 Beagle dogs were given PCH tablets(2 mg and 4 mg)intragastrically. The blood samples were collected 5 min before medication and 0.17,0.25,0.5,0.75,1.0,1.25,1.5,2,3,4,6,8,10,12,14,16,18, 24 and 36 h after medication,2 ml each time. Using penehyclidine hydrochloride as internal standard,HPLC-MS/MS method was adopted to determine the plasma concentration of PCH. The medication plans were interchanged 2 weeks later. The pharmacokinetic parameters were calculated using DAS 2.0 software.

RESULTS:

The linear range of PCH was 0.1-15 ng/ml(r=0.999 6);the low-est limit of quantification was 0.1 ng/ml;the methodology recovery were 97.30%-103.20%;the extraction recovery were 52.30%-60.11%(RSD<11%,n=5). The main pharmacokinetic parameters of low and high doses were as follows as t1/2α of (0.678±0.525)and(0.405±0.465)h,tmax of(1.042±0.401)and(0.900±0.418)h,cmax of(14.063±6.29)and(31.580±9.673) mg/L,AUC0-36 h of(48.186±14.776)and(79.269±34.649)mg·h/L.

CONCLUSIONS:

The method is simple,sensitive and speci-fic,and can be used for pharmacokinetic study of PCH in dogs.

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: China Pharmacy Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: China Pharmacy Year: 2015 Type: Article