Pteridinic derivativesareimportantbiomoleculesconsideredasbiomarkersforseveraldiseases,
especially incancerandinfectiouspathologies.Anew fluorimetric-HPLC methodfortheanalysisof
nine pteridinesinhumanserumhasbeenreported.TwoanalyticalcolumnscomposedbyC18porous
and fusedcoreparticleswereassayedandtheresultscompared.Fusedcoreparticlecolumnallowsus
adequateseparation,inonlyonerunandin15min.Acidprecipitationstepoftheproteinsandclean-up
process withanIsoluteENVþ (hydroxylatedpolystyrene-divinylbenzenecopolymer)cartridgeofthe
serum sampleshavebeenoptimized.Analytesweredeterminedby fluorimetric detection,excitingat
272nmandmeasuringthe fluorescence emissionat410nmforisoxanthopterin,at465nmfor
xanthopterin,andat445nmfortheanalysisoftheotherpteridines.Detectionlimitsbetween0.07
and 0.61ngmL1 werecalculatedaccordingtoClaytoncriterium.Intradayprecisionvariedfrom1.2to
5.3 andinterdayprecisionbetween1.2and7.4,bothexpressedasRSD(%).Externalstandardand
standard additioncalibrationswerecomparedintheanalysisofserumsamples.Thepteridineamounts
in serum(expressedasngmL17confidence interval)were3.6971.78;1.3570.24; 0.4670.14;
0.5470.24; 0.8470.55; 2.1070.51and0.2370.11forXAN,NEO,MON,ISO,BIOand6HMPT,
respectively,usingtheexternalstandardmethod.Comparableresultswereobtainedbythestandard
addition method.Itisnoticeablethat7BIOwasnotdetectedinthehealthyserumsamplesanalyzed
Pteridinic derivativesareimportantbiomoleculesconsideredasbiomarkersforseveraldiseasesโดยเฉพาะอย่างยิ่ง incancerandinfectiouspathologies นั้นใหม่ methodfortheanalysisof fluorimetric HPLCpteridinesinhumanserumhasbeenreported เก้า TwoanalyticalcolumnscomposedbyC18porousและ fusedcoreparticleswereassayedandtheresultscompared Fusedcoreparticlecolumnallowsusadequateseparation, inonlyonerunandin15min Acidprecipitationstepoftheproteinsandclean สายกระบวนการ withanIsoluteENVþ (hydroxylatedpolystyrene-divinylbenzenecopolymer) cartridgeoftheเซรั่ม sampleshavebeenoptimized ตรวจ Analytesweredeterminedby fluorimetric, excitingat272nmandmeasuringthe fluorescence emissionat410nmforisoxanthopterin, at465nmforxanthopterin, andat445nmfortheanalysisoftheotherpteridines Detectionlimitsbetween0.070.61ngmL และ werecalculatedaccordingtoClaytoncriterium.Intradayprecisionvariedfrom1.2to ที่ 15.3 andinterdayprecisionbetween1.2and7.4,bothexpressedasRSD(%) Externalstandardandadditioncalibrationswerecomparedintheanalysisofserumsamples มาตรฐาน Thepteridineamountsในซีรั่ม (ช่วง 17confidence expressedasngmL) were3.6971.78; 1.3570.24 0.4670.140.5470.24 0.8470.55 2.1070.51and0.2370.11forXAN,NEO,MON,ISO,BIOand6HMPTrespectively,usingtheexternalstandardmethod.Comparableresultswereobtainedbythestandardนอกจากนี้วิธีการ Itisnoticeablethat7BIOwasnotdetectedinthehealthyserumsamplesanalyzed
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pteridinic derivativesareimportantbiomoleculesconsideredasbiomarkersforseveraldiseases
, โดยเฉพาะอย่างยิ่ง incancerandinfectiouspathologies . ใหม่ fluorimetric HPLC methodfortheanalysisof
9 pteridinesinhumanserumhasbeenreported . twoanalyticalcolumnscomposedbyc18porous และ fusedcoreparticlecolumnallowsus
fusedcoreparticleswereassayedandtheresultscompared . adequateseparation inonlyonerunandin15min , .acidprecipitationstepoftheproteinsandclean ขึ้น
กระบวนการ withanisoluteenv þ ( hydroxylatedpolystyrene divinylbenzenecopolymer ) cartridgeofthe
เซรั่ม sampleshavebeenoptimized . analytesweredeterminedby fluorimetric ตรวจหา excitingat
272nmandmeasuringthe emissionat410nmforisoxanthopterin เรืองแสง , xanthopterin andat445nmfortheanalysisoftheotherpteridines detectionlimitsbetween0.07 at465nmfor
, .
0 .61ngml 1 werecalculatedaccordingtoclaytoncriterium . intradayprecisionvariedfrom1.2to
5.3 andinterdayprecisionbetween1.2and7.4 bothexpressedasrsd , ( % ) externalstandardand
มาตรฐาน additioncalibrationswerecomparedintheanalysisofserumsamples . thepteridineamounts
ในซีรั่ม ( expressedasngml 17confidence ครั้ง ) were3.6971.78 ; 1.3570.24 ; 0.4670.14 ;
0.5470.24 ; 0.8470.55 ; 2.1070.51and0.2370.11forxan นีโอ มอญbioand6hmpt , ISO , usingtheexternalstandardmethod comparableresultswereobtainedbythestandard
ตามลำดับ นอกจากนี้ method.itisnoticeablethat7biowasnotdetectedinthehealthyserumsamplesanalyzed .
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