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1、MicrochimActaDOI10.1007/s00604-014-1362-yORIGINALPAPERMicrochipbasedandimmunochromatographicstripassaysforthevisualdetectionofinterleukin-6andoftumornecrosisfactorαusinggoldnanoparticlesaslabelsYanMan&XuefeiLv&JavedIqbal&GuangPeng&DaSong&CongxiaoZhang&YulinDengR
2、eceived:8June2014/Accepted:8September2014#Springer-VerlagWien2014AbstractTheenzyme-linkedimmunesorbentassay(ELISA)(TNF-α)isanotherimportantinflammatorycytokinepro-ismostfrequentlyusedforthedeterminationofinterleukin-6ducedbymacrophages,lymphoidcells,neuronaltiss
3、ueand(IL-6)andtumornecrosisfactor-α(TNF-α).However,thismanyothertissues.Numerousstudieshaveshownthatthetechniqueistime-consumingandrequiresasubstantialsampleexpressionofIL-6andTNF-αwasassociatedwithanumbervolume.Wehavedeveloped(a)anewkindofcolloidalgold-ofage-re
4、latedchronicdiseases,i.e.,cardiovasculardisease,basedimmunochromatographicstrip,and(b)acolloidalgold-diabetes,cancer,physicaldisabilities,andcognitivedeclinebasedimmunochromatographicmicrochipforsimultaneous,[8].So,itisnecessarytoestablisharapid,simple,sensitive
5、,rapid,andvisualdetectionofIL-6andTNF-α.ThelowestandspecificdetectionmethodbothforIL-6andTNF-α.The−1−1limitofdetectionis62.5ngmLforIL-6,and30ngmLforsensitivityisdefinedasthepercentageofpositivetestre-TNF-α.Boththestripmethodandthemicrochipmethodaresponsesandspec
6、ificityaspercentageofnegativetests.highlyspecific,user-friendly,andcanbereadoutwithoutthePresently,enzyme-linkedimmunosorbentassay(ELISA)isneedforinstrumentation.theconventionalmethodusedforthedetectionIL-6andTNF-α[9–13].However,thismethodislaborious,time-Keywor
7、dsImmunochromatographicstrip.IL-6.TNF-α.consumingandrequirescomplicatedcleanupsteps,costlyImmunochromatographicmicrochip.Simultaneousdetectionequipmentandmoresamplequantity.AlltheselimitationsmakeELISAunsuitablefortherapiddiagnosisofplasmacytokines.IntroductionT
8、heimmunochromatographicstriptechniquehasbeende-velopedasapopularplatformforrapiddiagnosissinceitwasInterleukin-6(IL-6)isawellknowpleiotropiccytokinemain-firstintroduc