Article(id=1218555558966251554, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551191416525698, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2017-0841, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1505404800000, receivedDateStr=2017-09-15, revisedDate=null, revisedDateStr=null, acceptedDate=1509984000000, acceptedDateStr=2017-11-07, onlineDate=1768455884925, onlineDateStr=2026-01-15, pubDate=1518364800000, pubDateStr=2018-02-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768455884925, onlineIssueDateStr=2026-01-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768455884925, creator=13701087609, updateTime=1768455884925, updator=13701087609, issue=Issue{id=1218551191416525698, tenantId=1146029695717560320, journalId=1189982191388893191, year='2018', volume='53', issue='2', pageStart='163', pageEnd='320', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768454843620, creator=13701087609, updateTime=1768456934494, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218559961223843991, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551191416525698, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218559961223843992, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551191416525698, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=271, endPage=277, ext={EN=ArticleExt(id=1218555559406653491, articleId=1218555558966251554, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Determination of obeticholic acid in rat plasma by liquid chromatography-tandem mass spectrometry (LC-MS/MS), columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=ORIGINAL ARTICLES, runingTitle=null, highlight=null, articleAbstract=
A simple and sensitive method was developed for quantitation of obeticholic acid in rat plasma with liquid chromatography-tandem mass spectrometry (LC-MS/MS). After liquid-liquid extraction by methyl tert-butyl ether, the chromatographic separation was carried out on an ACE Excel 2 Super C18 column (50 mm×2.1 mm ID, 1.7 μm) with a gradient mobile phase consisting of acetonitrile and 2 mmol·L-1 ammonium formate at a flow rate of 0.2 mL·min-1. The quantitation analysis was performed using multiple reaction monitoring (MRM) at the specific ion transitions of m/z418.9[M-H]-→401.2 for obeticholic acid and m/z469.0[M-H]-→ 425.2 for glycyrrhetinic acid (internal standard) in the negative ion mode with electrospray ionization (ESI) source. This validated LC-MS/MS method yielded a good linearity over the range of 5 -5 000 ng·mL-1 with the lower limit of quantitation (LLOQ) of 5 ng·mL-1. The intra and inter-assay precisions (RSD) were all less than 9.82% and the accuracy (RE) was within ±6.90%. The extraction recovery of obeticholic acid was from 85.4% to 88.5%, and the matrix effect of obeticholic acid ranged from 78.9% to 82.5%. Stability test suggest that obeticholic acid in rat plasma was stable for 24 h on workbench, up to 1 month at -70℃, and after three cycles of freeze-thaw. Extracted samples were stable for more than 24 h in an auto-sampler at 6℃. The precision was less than 7.25%, and the accuracy was within ±11.2%, after being diluted 10 times by blank rat plasma. The method has been successfully applied to a pharmacokinetic study of obeticholic acid in rats following oral administration at the dose of 2.5 mg·kg-1.
, correspAuthors=Duan-yun SI, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2018 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Ru-yue ZHANG, Yuan GU, Ai-jie ZHANG, Shi-qi DONG, Quan-sheng LI, Guang-li WEI, Duan-yun SI), CN=ArticleExt(id=1218555560513949828, articleId=1218555558966251554, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=LC-MS/MS法测定大鼠血浆中奥贝胆酸的浓度, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
本文建立了一种快速、灵敏、准确、可靠的LC-MS/MS分析方法测定大鼠血浆中奥贝胆酸浓度,并应用于奥贝胆酸大鼠灌胃给药后的药动学研究。血浆样品以甲基叔丁基醚提取后,经ACE Excel 2 Super C18色谱柱(50 mm×2.1 mm ID,1.7 μm)分离,以乙腈-2 mmol·L-1甲酸铵水溶液(含10%乙腈)作为流动相,梯度洗脱,流速0.2 mL·min-1。电喷雾离子化源(ESI)负离子条件下,采用多反应监测模式(MRM)进行定量分析,监测离子对分别为奥贝胆酸m/z418.9[M-H]-→401.2,内标甘草次酸m/z 469.0[M-H]-→ 425.2。大鼠血浆中奥贝胆酸在5~5 000 ng·mL-1浓度内线性关系良好(r2 > 0.99),定量下限为5 ng·mL-1;日内、日间精密度(RSD)小于9.82%,准确度(RE)在±6.90%以内;血浆中无内源性物质干扰,内标归一化后的基质效应为78.9%~82.5%,提取回收率为85.4%~88.5%;奥贝胆酸的血浆样品经室温放置24 h、-70℃ 3次冻融循环、-70℃冻存1个月,处理后的样品在进样器内放置24 h均稳定;药物浓度超出曲线范围的样品经空白血浆稀释10倍后,其准确度在±11.2%以内,精密度为7.25%。本方法经验证后,成功应用于大鼠灌胃给予奥贝胆酸后的药动学研究。
, correspAuthors=司端运, authorNote=null, correspAuthorsNote=
, copyrightStatement=版权所有©《药学学报》编辑部2018, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=pRcGvwvpLw1R9BRb9OnVVA==, magXml=TeGUBtmhKiydC3jDkRhEuw==, pdfUrl=null, pdf=F/4J/u1trIl8Ewr/VvUiWA==, pdfFileSize=333186, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=zL208vHbXfj0wv/KtfzP8A==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=DLXA4BavkJl8jZgEDDOVrg==, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=张如月, 谷元, 张爱杰, 董世奇, 李全胜, 魏广力, 司端运)}, authors=[Author(id=1218970733879939961, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1218970733988991873, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, authorId=1218970733879939961, language=EN, stringName=Ru-yue ZHANG, firstName=Ru-yue, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=1. Tianjin Medical University Graduate School, Tianjin 300070, China
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1, 2, address=1.天津医科大学研究生院, 天津 300070
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Clin Pharmacokinet, 1996, 30:333-358., articleTitle=null, refAbstract=null), Reference(id=1218970747335267203, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[29], rfOrder=28, authorNames=null, journalName=null, refType=null, unstructuredReference=Xiang X, Vakkilainen J, Backman JT, et al. No significant effect of the SLCO1B1, polymorphism on the pharmacokinetics of ursodeoxycholic acid[J]. Eur J Clin Pharmacol, 2011, 67:1159-1167., articleTitle=null, refAbstract=null), Reference(id=1218970747469484942, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[30], rfOrder=29, authorNames=null, journalName=null, refType=null, unstructuredReference=Hou XQ. Studies on Pharmacokinetics of Taurocholic Acids in Rats (牛磺胆酸在大鼠体内的药代动力学研究)[D]. Hohhot: Inner Mongolia Agricultural University, 2007., articleTitle=null, refAbstract=null)], funds=[Fund(id=1218970742385988081, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, awardId=81503154, language=CN, fundingSource=国家自然科学基金青年科学基金资助项目(81503154), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1218970733552784211, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, xref=null, ext=[AuthorCompanyExt(id=1218970733556978516, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, companyId=1218970733552784211, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. 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Tianjin University, Tianjin 300191, China), AuthorCompanyExt(id=1218970733804442479, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, companyId=1218970733791859565, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3.天津大学, 天津 300191)])], figs=[ArticleFig(id=1218970739353506077, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, language=EN, label=null, caption=null, figureFileSmall=5+BtXKWsxf/hCqVHIhf3PA==, figureFileBig=SM32/YGObo836WrzzPtpyw==, tableContent=null), ArticleFig(id=1218970739584192824, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, language=CN, label=Figure 1, caption=
The chemical structures and product ion mass spectrum of the [M-H]- ions of obeticholic acid (A), glycyrrhetinic acid(B, internal standard)
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Representative MRM chromatograms of obeticholic acid (m/z 418.9→401.2) and glycyrrhetinic acid (m/z 469.0→ 425.2) in rat plasma. A: Blank rat plasma sample; B: Blank rat plasma spiked with obeticholic acid (LLOQ, 5 ng·mL-1) and IS (50 ng·mL-1); C: A rat plasma sample collected at 0.5 h after the oral administration of obeticholic acid (2.5 mg·kg-1)
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Mean plasma concentration-time profile of obeticholic acid after oral administration of obeticholic acid (2.5 mg·kg-1) in rats. n = 6, $\overline{x}±s$
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| Concentration/ng·mL-1 | | Precision (RSD, %) | Accuracy (RE, %) |
| Spiked | Measured | Inter-day | Intra-day |
| 5 | 5.04 ± 0.444 | | 18.1 | 6.63 | 0.896 |
| 12.5 | 11.6 ± 0.765 | 6.54 | 6.58 | -6.90 |
| 250 | 260 ± 10.7 | 7.75 | 3.32 | 4.04 |
| 3 750 | 3 958 ± 185 | 9.82 | 3.45 | 5.54 |
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Precision and accuracy for the analysis of obeticholic acid in rat plasma. n = 18, $\overline{x}±s$
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| Concentration/ng·mL-1 | | Precision (RSD, %) | Accuracy (RE, %) |
| Spiked | Measured | Inter-day | Intra-day |
| 5 | 5.04 ± 0.444 | | 18.1 | 6.63 | 0.896 |
| 12.5 | 11.6 ± 0.765 | 6.54 | 6.58 | -6.90 |
| 250 | 260 ± 10.7 | 7.75 | 3.32 | 4.04 |
| 3 750 | 3 958 ± 185 | 9.82 | 3.45 | 5.54 |
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| Storage condition | Concentration/ng·mL-1 | Precision (RSD, %) | Accuracy (RE, %) |
| Spiked | Measured |
| At ambient temperature | 12.5 | 11.1 ± 0.713 | 6.44 | -11.5 |
| for 24 h | 3 750 | 3 904 ± 100 | 2.57 | 4.12 |
| Three freeze-thaw | 12.5 | 12.2 ± 0.944 | 7.75 | -2.56 |
| cycles | 3 750 | 3 868 ± 91.5 | 2.37 | 3.15 |
| At -70 ℃ for a month | 12.5 | 12.7 ± 0.301 | 2.37 | 1.45 |
| 3 750 | 3 748 ± 115 | 3.06 | -0.053 0 |
| At 6 ℃ in the | 12.5 | 11.3 ± 0.306 | 2.70 | -9.32 |
| autosampler for 24 h | 3 750 | 3 832 ± 155 | 4.03 | 2.19 |
), ArticleFig(id=1218970741891060146, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218555558966251554, language=CN, label=Table 2, caption=
Stability of obeticholic acid in rat plasma. n = 3, x± s
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| Storage condition | Concentration/ng·mL-1 | Precision (RSD, %) | Accuracy (RE, %) |
| Spiked | Measured |
| At ambient temperature | 12.5 | 11.1 ± 0.713 | 6.44 | -11.5 |
| for 24 h | 3 750 | 3 904 ± 100 | 2.57 | 4.12 |
| Three freeze-thaw | 12.5 | 12.2 ± 0.944 | 7.75 | -2.56 |
| cycles | 3 750 | 3 868 ± 91.5 | 2.37 | 3.15 |
| At -70 ℃ for a month | 12.5 | 12.7 ± 0.301 | 2.37 | 1.45 |
| 3 750 | 3 748 ± 115 | 3.06 | -0.053 0 |
| At 6 ℃ in the | 12.5 | 11.3 ± 0.306 | 2.70 | -9.32 |
| autosampler for 24 h | 3 750 | 3 832 ± 155 | 4.03 | 2.19 |
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| Parameter | Plasma obeticholic acid |
| Cmax/ng·mL-1 | 2 180±904 |
| tmax /h | 0.167±0 |
| AUC0-72 h /h·ng·mL-1 | 1 960±645 |
| AUC0-∞ /h·ng·mL-1 | 2 160±721 |
| MRT0-72 h /h | 11.3±7.09 |
| MRT0-∞ /h | 17.7±10.4 |
| Vd /L·kg-1 | 30.3±13.1 |
| CL /ng·mL-1 | 1.27±0.435 |
| t1/2 /h | 17.2±7.03 |
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The pharmacokinetic parameters of obeticholic acid after oral administration of obeticholic acid (2.5 mg·kg-1) in rats. n = 6, x± s
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| Parameter | Plasma obeticholic acid |
| Cmax/ng·mL-1 | 2 180±904 |
| tmax /h | 0.167±0 |
| AUC0-72 h /h·ng·mL-1 | 1 960±645 |
| AUC0-∞ /h·ng·mL-1 | 2 160±721 |
| MRT0-72 h /h | 11.3±7.09 |
| MRT0-∞ /h | 17.7±10.4 |
| Vd /L·kg-1 | 30.3±13.1 |
| CL /ng·mL-1 | 1.27±0.435 |
| t1/2 /h | 17.2±7.03 |
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