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Development of a rapid HPLC method for the determination of penciclovir in human plasma using a monolithic column and its application to a bioequivalence study

모노리틱 칼럼을 이용한 혈장 중 펜시를로버의 HPLC 신속분석법 개발 및 이를 이용한 생물학적동등성시험

  • Received : 2007.07.18
  • Accepted : 2007.07.26
  • Published : 2007.08.25

Abstract

A simple and rapid HPLC method with fluorescence detection(FLD) for quantitation of penciclovir in human plasma using a monolithic column was developed and validated. Penciclovir and ganciclovir(internal standard, I.S.) were separated on a Chromolith column RP-18e ($4.6{\times}100mm$) with a mobile phase consisting of a mixture of (A) methanol/50 mM sodium phosphate buffer containing 200 mg/L sodium dodecyl sulfate (3/97, pH 2.5) and (B) methanol/50 mM sodium phosphate buffer containing 200 mg/L sodium dodecyl sulfate (50/50, pH 2.5) at a flow gradient of $1.6{\sim}4.0mL/min$. The retention times of penciclovir and internal standard were less than 4.0 min. Calibration curve was linear ($R^2=0.9994$) over a concentration range of $0.1{\sim}5{\mu}g/mL$. Intra-day precision, accuracy and inter-day precision were 1.36~8.55 %, 92.8~100.0 % and 0.93~5.62 %, respectively with a limit of quantitation at $0.1{\mu}g/mL$. The present HPLC-FLD method is sensitive, precise and accurate. The method described herein has been successfully used for the bioequivalence study of a famciclovir formulation product after oral administration to healthy Korean volunteers.

본 연구에서는 건강한 성인 혈장 중의 펜시클로버를 모노리틱(monolithic) 칼럼을 이용한 고성능 액체크로마토그래피(HPLC)-형광검출법으로 신속하게 분석하는 방법을 개발하였다. 충전형 ODS 칼럼보다 빠른 유속에서 고분리능을 구현할 수 있는 모노리틱 칼럼을 사용하였고, 이동상에 이온쌍 시약(ionpairing reagent)인 sodium dodecyl sulfate와 잔존 실라놀기(residual silanol group)를 차폐하는 triethylamine을 첨가하여, 용매 조성과 유량에 대한 기울기 용리(gradient elution)를 실시하였다. 그 결과, 펜시클로버와 내부표준물질로 사용한 간시클로버의 머무름시간을 4분 이내로 단축시킬 수 있었다. 확립된 방법으로 분석법 검증을 실시한 결과, $0.1{\sim}5{\mu}g/mL$의 농도 범위 내에서 검량선의 상관계수가 0.9994로 양호한 직선성을 나타내었다. 또한 하루에 5번 반복 실험하여 구한 일내 정밀성과 정확성은 1.36~8.55%, 92.8~100.0%이었고, 5일간 반복 실험하여 구한 일간 정밀성은 0.93~5.62%이었으며, 정량한계는 $0.1{\mu}g/mL$이었다. 건강한 성인 24명을 대상으로한 팜시클로버 제제의 생물학적동등성시험에 본 분석법을 적용하였으며, 생물학적동등성시험 판단기준에 따라 시험약이 대조약에 대하여 동등한 것으로 판명되었다.

Keywords

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