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Drug Res (Stuttg) 2014; 64(02): 73-78
DOI: 10.1055/s-0033-1351286
Original Article
© Georg Thieme Verlag KG Stuttgart · New York

A Simple and Sensitive Gas Chromatography Method for Determination of Isosorbide Dinitrate and its Metabolites in Human Plasma: Application to Pharmacokinetics Study on Oral Spray

Z. Jiang
1   School of Pharmaceutical Sciences of Shandong University, Shandong, China
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
C. Wei
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
Z. Sun
1   School of Pharmaceutical Sciences of Shandong University, Shandong, China
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
J. Guo
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
R. Li
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
R. Zhang
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
G. Yuan
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
,
R. Guo
2   Institute of Clinical Pharmacology, Qilu Hospital of Shandong University, Shandong, China
› Author Affiliations
Further Information

Publication History

received 29 March 2013

accepted 07 July 2013

Publication Date:
31 July 2013 (online)

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Abstract

A sensitive method for the simultaneous determination of isosorbide dinitrate (ISDN) and its mononitrate metabolites, isosorbide 2-mononitrate and isosorbide 5-mononitrate (IS-2-MN and IS-5-MN), in human plasma was developed using capillary gas chromatography with electron-capture detection, whereas 1,2,4-butanetriol trinitrate was used as internal standard. The analytes were extracted with a simple liquid-liquid extraction from plasma and separated on a DB-1 column. The results of method validation demonstrated that the calibration curves were linear in range of 2–60 ng/mL for ISDN and IS-5-MN, 1–20 ng/mL for IS-2-MN, respectively. The precision (RSD%) was less than 15%, and the lower limit of quantitation was identifiable and reproducible at 2 ng/mL for ISDN and IS-5-MN, 1 ng/mL for IS-2-MN. The analytes in plasma were stable after being stored for more than 30 days and after 2 freeze–thaw cycles (−20 to 25°C). And then this method was successfully applied to a pharmacokinetic investigation on isosorbide dinitrate oral spray in healthy volunteers.

Key words

GC-ECD - isosorbide dinitrate - pharmacokinetics
 

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