Metabolic profiling of urine in young obese men using ultra performance liquid chromatography and Q-TOF mass spectrometry (UPLC/Q-TOF MS)

Obesity is currently epidemic in many countries worldwide. In the young adult, obesity often accompanies hyperlipemia, which is strongly related to the occurrence and development of obesity-related chronic diseases such as diabetes mellitus, hypertension and cardiovascular disease. This study invest...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of chromatography. B, Analytical technologies in the biomedical and life sciences Analytical technologies in the biomedical and life sciences, 2011-10, Vol.879 (27), p.2871-2876
Hauptverfasser: Wang, Cheng, Feng, Rennan, Sun, Dianjun, Li, Ying, Bi, Xinxin, Sun, Changhao
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 2876
container_issue 27
container_start_page 2871
container_title Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
container_volume 879
creator Wang, Cheng
Feng, Rennan
Sun, Dianjun
Li, Ying
Bi, Xinxin
Sun, Changhao
description Obesity is currently epidemic in many countries worldwide. In the young adult, obesity often accompanies hyperlipemia, which is strongly related to the occurrence and development of obesity-related chronic diseases such as diabetes mellitus, hypertension and cardiovascular disease. This study investigated the differences in metabolomic profiling between obese (with hyperlipemia, n = 30) and normal-weight ( n = 30) young men. Anthropometric parameters and conventional metabolites were measured. There were no significant differences between obese and normal-weight young men in age, height and fasting plasma glucose level. Obese young men showed increased weight, body mass index, fat mass, systolic blood pressure, and triglyeride, total cholesterol and insulin levels, and lower levels of testosterone. The endogenous metabolite profile of urine was investigated by UPLC/Q-TOF MS (ultra performance liquid chromatography and Q-TOF mass spectrometry) with electrospray ionization (ESI). Partial least squares (PLS) enabled clusters to be visualized. Eight urine principal metabolites contributing to the clusters were identified; these included increased l-prolyl- l-proline, leucyl-phenylalanine, and decanoylcarnitine in positive ESI mode ( m/ z 213.1267, 279.1715 and 316.2459, respectively) and N-acetylornithine, 17-hydroxypregnenolone sulfate, 11β-hydroxyprogesterone, 5a-dihydrotestosterone sulfate and glucosylgalactosyl hydroxylysine in negative ESI mode ( m/ z 173.0931, 411.1883, 331.185, 369.1751 and 485.1875, respectively). These metabolite changes in obese men suggested early changes of metabolism in young-male obesity with hyperlipemia. The study may further aid the clinical prevention and treatment of obesity and related chronic disease.
doi_str_mv 10.1016/j.jchromb.2011.08.014
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_926303737</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S157002321100540X</els_id><sourcerecordid>926303737</sourcerecordid><originalsourceid>FETCH-LOGICAL-c450t-8f096497058a584fba0b948ce527b2ddebe16c0fa58eb515fb0acfc990c79b933</originalsourceid><addsrcrecordid>eNqFkc9u1DAQxiMEon_gEQBfUOGQ7TiOk_iE0IoC0lYFtStxs2xnvPUqibd2grSPwFvjsAscKx9seX4z8818WfaKwoICrS63i625D77XiwIoXUCzAFo-yU5pU7Oc1dWPp-nNa8ihYMVJdhbjFoDWULPn2UlBGwElK0-zX9c4Ku07Z8gueOs6N2yIt2QKbkDiBrL30_yjMSLpcSBTnImpG4MiOwzWh14NBknnHibXkj-a1Og3Qe3u90QNLfme391ckV7FSOIOzZgAHMOevFt_Wy0vD9Hr2_cvsmdWdRFfHu_zbH316W75JV_dfP66_LjKTclhzBsLoipFDbxRvCmtVqBF2RjkRa2LtkWNtDJgUxA1p9xqUMYaIcDUQgvGzrOLQ90078OEcZS9iwa7Tg3opyhFUTFgdTqPkY1gdQGczTX5gTTBxxjQyl1wvQp7SUHOdsmtPNolZ7skNDLZlfJeHztMusf2X9ZffxLw9gioaFRnQ9q1i_-5knMB1SzgzYGzyku1CYlZ36ZOFQBUnJfzMB8OBKbd_nQYZDQOk3OtC8kU2Xr3iNjfA2K_4Q</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>893720533</pqid></control><display><type>article</type><title>Metabolic profiling of urine in young obese men using ultra performance liquid chromatography and Q-TOF mass spectrometry (UPLC/Q-TOF MS)</title><source>MEDLINE</source><source>Elsevier ScienceDirect Journals</source><creator>Wang, Cheng ; Feng, Rennan ; Sun, Dianjun ; Li, Ying ; Bi, Xinxin ; Sun, Changhao</creator><creatorcontrib>Wang, Cheng ; Feng, Rennan ; Sun, Dianjun ; Li, Ying ; Bi, Xinxin ; Sun, Changhao</creatorcontrib><description>Obesity is currently epidemic in many countries worldwide. In the young adult, obesity often accompanies hyperlipemia, which is strongly related to the occurrence and development of obesity-related chronic diseases such as diabetes mellitus, hypertension and cardiovascular disease. This study investigated the differences in metabolomic profiling between obese (with hyperlipemia, n = 30) and normal-weight ( n = 30) young men. Anthropometric parameters and conventional metabolites were measured. There were no significant differences between obese and normal-weight young men in age, height and fasting plasma glucose level. Obese young men showed increased weight, body mass index, fat mass, systolic blood pressure, and triglyeride, total cholesterol and insulin levels, and lower levels of testosterone. The endogenous metabolite profile of urine was investigated by UPLC/Q-TOF MS (ultra performance liquid chromatography and Q-TOF mass spectrometry) with electrospray ionization (ESI). Partial least squares (PLS) enabled clusters to be visualized. Eight urine principal metabolites contributing to the clusters were identified; these included increased l-prolyl- l-proline, leucyl-phenylalanine, and decanoylcarnitine in positive ESI mode ( m/ z 213.1267, 279.1715 and 316.2459, respectively) and N-acetylornithine, 17-hydroxypregnenolone sulfate, 11β-hydroxyprogesterone, 5a-dihydrotestosterone sulfate and glucosylgalactosyl hydroxylysine in negative ESI mode ( m/ z 173.0931, 411.1883, 331.185, 369.1751 and 485.1875, respectively). These metabolite changes in obese men suggested early changes of metabolism in young-male obesity with hyperlipemia. The study may further aid the clinical prevention and treatment of obesity and related chronic disease.</description><identifier>ISSN: 1570-0232</identifier><identifier>EISSN: 1873-376X</identifier><identifier>DOI: 10.1016/j.jchromb.2011.08.014</identifier><identifier>PMID: 21890434</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Adolescent ; Adult ; Analysis ; Analytical, structural and metabolic biochemistry ; Biological and medical sciences ; blood glucose ; body mass index ; Case-Control Studies ; cholesterol ; Chromatography, High Pressure Liquid - methods ; chronic diseases ; Cluster Analysis ; diabetes mellitus ; fasting ; Fundamental and applied biological sciences. Psychology ; General pharmacology ; Humans ; hydroxylysine ; Hyperlipemia ; hyperlipidemia ; Hyperlipidemias - metabolism ; Hyperlipidemias - urine ; hypertension ; insulin ; ionization ; least squares ; Least-Squares Analysis ; Male ; mass spectrometry ; Medical sciences ; men ; Metabolic profiles ; metabolism ; metabolites ; Metabolome ; metabolomics ; Multivariate Analysis ; obesity ; Obesity - metabolism ; Obesity - urine ; Pharmacology. Drug treatments ; Spectrometry, Mass, Electrospray Ionization - methods ; sulfates ; systolic blood pressure ; testosterone ; ultra-performance liquid chromatography ; UPLC/Q-TOF MS ; urine ; young adults ; Young obese men</subject><ispartof>Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2011-10, Vol.879 (27), p.2871-2876</ispartof><rights>2011</rights><rights>2015 INIST-CNRS</rights><rights>Crown Copyright © 2011. Published by Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c450t-8f096497058a584fba0b948ce527b2ddebe16c0fa58eb515fb0acfc990c79b933</citedby><cites>FETCH-LOGICAL-c450t-8f096497058a584fba0b948ce527b2ddebe16c0fa58eb515fb0acfc990c79b933</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S157002321100540X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=24559063$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21890434$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Cheng</creatorcontrib><creatorcontrib>Feng, Rennan</creatorcontrib><creatorcontrib>Sun, Dianjun</creatorcontrib><creatorcontrib>Li, Ying</creatorcontrib><creatorcontrib>Bi, Xinxin</creatorcontrib><creatorcontrib>Sun, Changhao</creatorcontrib><title>Metabolic profiling of urine in young obese men using ultra performance liquid chromatography and Q-TOF mass spectrometry (UPLC/Q-TOF MS)</title><title>Journal of chromatography. B, Analytical technologies in the biomedical and life sciences</title><addtitle>J Chromatogr B Analyt Technol Biomed Life Sci</addtitle><description>Obesity is currently epidemic in many countries worldwide. In the young adult, obesity often accompanies hyperlipemia, which is strongly related to the occurrence and development of obesity-related chronic diseases such as diabetes mellitus, hypertension and cardiovascular disease. This study investigated the differences in metabolomic profiling between obese (with hyperlipemia, n = 30) and normal-weight ( n = 30) young men. Anthropometric parameters and conventional metabolites were measured. There were no significant differences between obese and normal-weight young men in age, height and fasting plasma glucose level. Obese young men showed increased weight, body mass index, fat mass, systolic blood pressure, and triglyeride, total cholesterol and insulin levels, and lower levels of testosterone. The endogenous metabolite profile of urine was investigated by UPLC/Q-TOF MS (ultra performance liquid chromatography and Q-TOF mass spectrometry) with electrospray ionization (ESI). Partial least squares (PLS) enabled clusters to be visualized. Eight urine principal metabolites contributing to the clusters were identified; these included increased l-prolyl- l-proline, leucyl-phenylalanine, and decanoylcarnitine in positive ESI mode ( m/ z 213.1267, 279.1715 and 316.2459, respectively) and N-acetylornithine, 17-hydroxypregnenolone sulfate, 11β-hydroxyprogesterone, 5a-dihydrotestosterone sulfate and glucosylgalactosyl hydroxylysine in negative ESI mode ( m/ z 173.0931, 411.1883, 331.185, 369.1751 and 485.1875, respectively). These metabolite changes in obese men suggested early changes of metabolism in young-male obesity with hyperlipemia. The study may further aid the clinical prevention and treatment of obesity and related chronic disease.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Analysis</subject><subject>Analytical, structural and metabolic biochemistry</subject><subject>Biological and medical sciences</subject><subject>blood glucose</subject><subject>body mass index</subject><subject>Case-Control Studies</subject><subject>cholesterol</subject><subject>Chromatography, High Pressure Liquid - methods</subject><subject>chronic diseases</subject><subject>Cluster Analysis</subject><subject>diabetes mellitus</subject><subject>fasting</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General pharmacology</subject><subject>Humans</subject><subject>hydroxylysine</subject><subject>Hyperlipemia</subject><subject>hyperlipidemia</subject><subject>Hyperlipidemias - metabolism</subject><subject>Hyperlipidemias - urine</subject><subject>hypertension</subject><subject>insulin</subject><subject>ionization</subject><subject>least squares</subject><subject>Least-Squares Analysis</subject><subject>Male</subject><subject>mass spectrometry</subject><subject>Medical sciences</subject><subject>men</subject><subject>Metabolic profiles</subject><subject>metabolism</subject><subject>metabolites</subject><subject>Metabolome</subject><subject>metabolomics</subject><subject>Multivariate Analysis</subject><subject>obesity</subject><subject>Obesity - metabolism</subject><subject>Obesity - urine</subject><subject>Pharmacology. Drug treatments</subject><subject>Spectrometry, Mass, Electrospray Ionization - methods</subject><subject>sulfates</subject><subject>systolic blood pressure</subject><subject>testosterone</subject><subject>ultra-performance liquid chromatography</subject><subject>UPLC/Q-TOF MS</subject><subject>urine</subject><subject>young adults</subject><subject>Young obese men</subject><issn>1570-0232</issn><issn>1873-376X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc9u1DAQxiMEon_gEQBfUOGQ7TiOk_iE0IoC0lYFtStxs2xnvPUqibd2grSPwFvjsAscKx9seX4z8818WfaKwoICrS63i625D77XiwIoXUCzAFo-yU5pU7Oc1dWPp-nNa8ihYMVJdhbjFoDWULPn2UlBGwElK0-zX9c4Ku07Z8gueOs6N2yIt2QKbkDiBrL30_yjMSLpcSBTnImpG4MiOwzWh14NBknnHibXkj-a1Og3Qe3u90QNLfme391ckV7FSOIOzZgAHMOevFt_Wy0vD9Hr2_cvsmdWdRFfHu_zbH316W75JV_dfP66_LjKTclhzBsLoipFDbxRvCmtVqBF2RjkRa2LtkWNtDJgUxA1p9xqUMYaIcDUQgvGzrOLQ90078OEcZS9iwa7Tg3opyhFUTFgdTqPkY1gdQGczTX5gTTBxxjQyl1wvQp7SUHOdsmtPNolZ7skNDLZlfJeHztMusf2X9ZffxLw9gioaFRnQ9q1i_-5knMB1SzgzYGzyku1CYlZ36ZOFQBUnJfzMB8OBKbd_nQYZDQOk3OtC8kU2Xr3iNjfA2K_4Q</recordid><startdate>20111001</startdate><enddate>20111001</enddate><creator>Wang, Cheng</creator><creator>Feng, Rennan</creator><creator>Sun, Dianjun</creator><creator>Li, Ying</creator><creator>Bi, Xinxin</creator><creator>Sun, Changhao</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7TS</scope></search><sort><creationdate>20111001</creationdate><title>Metabolic profiling of urine in young obese men using ultra performance liquid chromatography and Q-TOF mass spectrometry (UPLC/Q-TOF MS)</title><author>Wang, Cheng ; Feng, Rennan ; Sun, Dianjun ; Li, Ying ; Bi, Xinxin ; Sun, Changhao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c450t-8f096497058a584fba0b948ce527b2ddebe16c0fa58eb515fb0acfc990c79b933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Analysis</topic><topic>Analytical, structural and metabolic biochemistry</topic><topic>Biological and medical sciences</topic><topic>blood glucose</topic><topic>body mass index</topic><topic>Case-Control Studies</topic><topic>cholesterol</topic><topic>Chromatography, High Pressure Liquid - methods</topic><topic>chronic diseases</topic><topic>Cluster Analysis</topic><topic>diabetes mellitus</topic><topic>fasting</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General pharmacology</topic><topic>Humans</topic><topic>hydroxylysine</topic><topic>Hyperlipemia</topic><topic>hyperlipidemia</topic><topic>Hyperlipidemias - metabolism</topic><topic>Hyperlipidemias - urine</topic><topic>hypertension</topic><topic>insulin</topic><topic>ionization</topic><topic>least squares</topic><topic>Least-Squares Analysis</topic><topic>Male</topic><topic>mass spectrometry</topic><topic>Medical sciences</topic><topic>men</topic><topic>Metabolic profiles</topic><topic>metabolism</topic><topic>metabolites</topic><topic>Metabolome</topic><topic>metabolomics</topic><topic>Multivariate Analysis</topic><topic>obesity</topic><topic>Obesity - metabolism</topic><topic>Obesity - urine</topic><topic>Pharmacology. Drug treatments</topic><topic>Spectrometry, Mass, Electrospray Ionization - methods</topic><topic>sulfates</topic><topic>systolic blood pressure</topic><topic>testosterone</topic><topic>ultra-performance liquid chromatography</topic><topic>UPLC/Q-TOF MS</topic><topic>urine</topic><topic>young adults</topic><topic>Young obese men</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Cheng</creatorcontrib><creatorcontrib>Feng, Rennan</creatorcontrib><creatorcontrib>Sun, Dianjun</creatorcontrib><creatorcontrib>Li, Ying</creatorcontrib><creatorcontrib>Bi, Xinxin</creatorcontrib><creatorcontrib>Sun, Changhao</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Physical Education Index</collection><jtitle>Journal of chromatography. B, Analytical technologies in the biomedical and life sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Cheng</au><au>Feng, Rennan</au><au>Sun, Dianjun</au><au>Li, Ying</au><au>Bi, Xinxin</au><au>Sun, Changhao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Metabolic profiling of urine in young obese men using ultra performance liquid chromatography and Q-TOF mass spectrometry (UPLC/Q-TOF MS)</atitle><jtitle>Journal of chromatography. B, Analytical technologies in the biomedical and life sciences</jtitle><addtitle>J Chromatogr B Analyt Technol Biomed Life Sci</addtitle><date>2011-10-01</date><risdate>2011</risdate><volume>879</volume><issue>27</issue><spage>2871</spage><epage>2876</epage><pages>2871-2876</pages><issn>1570-0232</issn><eissn>1873-376X</eissn><abstract>Obesity is currently epidemic in many countries worldwide. In the young adult, obesity often accompanies hyperlipemia, which is strongly related to the occurrence and development of obesity-related chronic diseases such as diabetes mellitus, hypertension and cardiovascular disease. This study investigated the differences in metabolomic profiling between obese (with hyperlipemia, n = 30) and normal-weight ( n = 30) young men. Anthropometric parameters and conventional metabolites were measured. There were no significant differences between obese and normal-weight young men in age, height and fasting plasma glucose level. Obese young men showed increased weight, body mass index, fat mass, systolic blood pressure, and triglyeride, total cholesterol and insulin levels, and lower levels of testosterone. The endogenous metabolite profile of urine was investigated by UPLC/Q-TOF MS (ultra performance liquid chromatography and Q-TOF mass spectrometry) with electrospray ionization (ESI). Partial least squares (PLS) enabled clusters to be visualized. Eight urine principal metabolites contributing to the clusters were identified; these included increased l-prolyl- l-proline, leucyl-phenylalanine, and decanoylcarnitine in positive ESI mode ( m/ z 213.1267, 279.1715 and 316.2459, respectively) and N-acetylornithine, 17-hydroxypregnenolone sulfate, 11β-hydroxyprogesterone, 5a-dihydrotestosterone sulfate and glucosylgalactosyl hydroxylysine in negative ESI mode ( m/ z 173.0931, 411.1883, 331.185, 369.1751 and 485.1875, respectively). These metabolite changes in obese men suggested early changes of metabolism in young-male obesity with hyperlipemia. The study may further aid the clinical prevention and treatment of obesity and related chronic disease.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>21890434</pmid><doi>10.1016/j.jchromb.2011.08.014</doi><tpages>6</tpages></addata></record>
fulltext fulltext
identifier ISSN: 1570-0232
ispartof Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2011-10, Vol.879 (27), p.2871-2876
issn 1570-0232
1873-376X
language eng
recordid cdi_proquest_miscellaneous_926303737
source MEDLINE; Elsevier ScienceDirect Journals
subjects Adolescent
Adult
Analysis
Analytical, structural and metabolic biochemistry
Biological and medical sciences
blood glucose
body mass index
Case-Control Studies
cholesterol
Chromatography, High Pressure Liquid - methods
chronic diseases
Cluster Analysis
diabetes mellitus
fasting
Fundamental and applied biological sciences. Psychology
General pharmacology
Humans
hydroxylysine
Hyperlipemia
hyperlipidemia
Hyperlipidemias - metabolism
Hyperlipidemias - urine
hypertension
insulin
ionization
least squares
Least-Squares Analysis
Male
mass spectrometry
Medical sciences
men
Metabolic profiles
metabolism
metabolites
Metabolome
metabolomics
Multivariate Analysis
obesity
Obesity - metabolism
Obesity - urine
Pharmacology. Drug treatments
Spectrometry, Mass, Electrospray Ionization - methods
sulfates
systolic blood pressure
testosterone
ultra-performance liquid chromatography
UPLC/Q-TOF MS
urine
young adults
Young obese men
title Metabolic profiling of urine in young obese men using ultra performance liquid chromatography and Q-TOF mass spectrometry (UPLC/Q-TOF MS)
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-28T18%3A32%3A21IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Metabolic%20profiling%20of%20urine%20in%20young%20obese%20men%20using%20ultra%20performance%20liquid%20chromatography%20and%20Q-TOF%20mass%20spectrometry%20(UPLC/Q-TOF%20MS)&rft.jtitle=Journal%20of%20chromatography.%20B,%20Analytical%20technologies%20in%20the%20biomedical%20and%20life%20sciences&rft.au=Wang,%20Cheng&rft.date=2011-10-01&rft.volume=879&rft.issue=27&rft.spage=2871&rft.epage=2876&rft.pages=2871-2876&rft.issn=1570-0232&rft.eissn=1873-376X&rft_id=info:doi/10.1016/j.jchromb.2011.08.014&rft_dat=%3Cproquest_cross%3E926303737%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=893720533&rft_id=info:pmid/21890434&rft_els_id=S157002321100540X&rfr_iscdi=true