Pharmacokinetics of m-nifedipine in Beagle dogs / 药学学报
Acta Pharmaceutica Sinica
;
(12): 609-612, 2004.
Article
in Chinese
| WPRIM
| ID: wpr-302752
ABSTRACT
<p><b>AIM</b>To study the pharmacokinetics of m-nifedipine (m-Nif) in Beagle dogs.</p><p><b>METHODS</b>The Beagle dogs were divided into two groups. m-Nif was intravenously administered to the Beagle dogs in group 1 at the dose of 0. 288 mg x kg(-1), and it was orally administered to the Beagle dogs in group 2, 3 and 4 at the dose of 1.152, 3.456 and 10.370 mg x kg(-1), respectively. m-Nif in plasma was detected by reversed phase high performance liquid chromatography. The pharmacokinetic parameters were calculated by 3P97 software.</p><p><b>RESULTS</b>When m-Nif was intravenously administered, the plasma concentration-time curve was fit to a two-compartment model and T1/2beta was 117 min. When m-Nif was orally administered, the plasma concentration-time curve was fit to a one-compartment model. T1/2 (Ke) and Cmax were 147 min and 20 microg x L(-1); at the low dose of 1.152 mg x kg(-1). T1/2 (Ke) was 122 min and Cmax was 36 microg x L(-1) at the middle dose of 3.456 mg x kg(-1). T1/2 (Ke) was 144 min and Cmax was 69 microg x L(-1) at the high dose of 10.37 mg x kg(-1), respectively.</p><p><b>CONCLUSION</b>It was showed that the speed of elimination of m-Nif was high in Beagle dogs. The absolute bioavailability of m-Nif given orally was very low.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacokinetics
/
Calcium Channel Blockers
/
Biological Availability
/
Nifedipine
/
Administration, Oral
/
Area Under Curve
/
Injections, Intravenous
/
Isomerism
Type of study:
Prognostic study
Limits:
Animals
Language:
Chinese
Journal:
Acta Pharmaceutica Sinica
Year:
2004
Type:
Article
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