Determination of the anti-anginal drug 6-chloro-2-pyridylmethyl nitrate in plasma and urine by fused-silica open-tubular column gas chromatography with electron-capture detection

1. Plasma concentrations of 6-chloro-2-pyridylmethyl nitrate (CPMN) at different sampling sites in the circulation were determined during and after constant infusion in the rat. 2. An arterial-venous CPMN concentration gradient was found and characterized by the following trends. During CPMN infusion into the right atrium, plasma concentrations were higher in arterial (aortic arch) than venous (inferior vena cava) plasma. After cessation of infusion the venous plasma concentrations were significantly higher (P less than 0.05) than those in arterial samples. There was a low concentration gradient between the right atrium and the peripheral artery, but substantial difference between the peripheral artery and the vein. There was a 1.8-2.4 extraction ratio of CPMN across the arterial-venous bed.

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Arterial-Venous Concentration Gradient as a Potential Source of Error in Pharmacokinetic Studies. Plasma Concentration Differences of 6-Chloro-2-Pyridylmethyl Nitrate on Constant Infusion to Rats

Terada

Ishibashi

Tsuchiya

et al. 1989

Xenobiotica

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Determination of the anti-anginal drug 6-chloro-2-pyridylmethyl nitrate in plasma and urine by fused-silica open-tubular column gas chromatography with electron-capture detection

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Arterial-Venous Concentration Gradient as a Potential Source of Error in Pharmacokinetic Studies. Plasma Concentration Differences of 6-Chloro-2-Pyridylmethyl Nitrate on Constant Infusion to Rats

Arterial-Venous Concentration Gradient as a Potential Source of Error in Pharmacokinetic Studies. Plasma Concentration Differences of 6-Chloro-2-Pyridylmethyl Nitrate on Constant Infusion to Rats

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