In this paper, a kind of thermally linear polymer, poly N isopropylacrylamide(PNIPA) was packed into capillary electrophoresis, which can be used to separate bound and free estradiol antigen. A useful method for deter...In this paper, a kind of thermally linear polymer, poly N isopropylacrylamide(PNIPA) was packed into capillary electrophoresis, which can be used to separate bound and free estradiol antigen. A useful method for determination of estradiol in serum by hydrogel capillary electrophoretic immunoassay(CEIA) was developed. The influence of concentration and pH of buffer, concentration of hydrogel, applied voltage, temperature etc has been studied. The limit of detection and the linear range of estrodiol were 30 pg/mL and 0 1—10 ng/mL. [WT5HZ]展开更多
A novel detection method of a tumor marker alpha-fetoprotein（AFP） in human sera via capillary（electrophoresis） immunoassay coupled with chemiluminescence detection（CEIACL） was established.After a simple non-comp...A novel detection method of a tumor marker alpha-fetoprotein（AFP） in human sera via capillary（electrophoresis） immunoassay coupled with chemiluminescence detection（CEIACL） was established.After a simple non-competitive immunoassay procedure,seras were directly injected into capillary for electrophoresis with chemiluminescence reaction of luminol and H2O2 catalyzed by horseradish peroxidase and enhanced by（p-iodophenol）.The detection limit（S/N=3） of AFP is 0.85 μg/L.The CEIACL method proposed was successfully applied to the sensitive detection of AFP in human sera,which coincides with the results detected by Beckman automatic CL analyzer-access IA system.展开更多
In this study, a capillary electrophoresis immunoassay(CEIA) method based on the enhanced chemiluminescence(CL) detection was developed. A horseradish peroxidase(HRP) label catalyzing the luminol/H 2O 2/p-iodophenol(P...In this study, a capillary electrophoresis immunoassay(CEIA) method based on the enhanced chemiluminescence(CL) detection was developed. A horseradish peroxidase(HRP) label catalyzing the luminol/H 2O 2/p-iodophenol(PIP) reaction was performed, and the HRP was detected with detection limit(S/N=3) of 4.4 pmol/L(53 zmol), which is one of the highest sensitivity of HRP reported yet. The HRP was linked to bone morphogenic protein-2(BMP-2) in rat vascular smooth muscle(VSM) cells in noncompetitive format and first detected by CL. HRP-Ab 2-mAb-BMP-2 complexes were baseline separated from free HRP label in 3 min. The detection limit(S/N=3) of BMP-2 is 6.2 pmol/L(75 zmol). This technique has been applied to arteriosclerosis pathology research. The change of BMP-2 contentin VSM cells which were stimulated by angiotensin Ⅱ(AgⅡ) for different hours was investigated in the concentration range of 1.0-10.0 pmol/L. The results are in accord with that obtained by common used Pathology image analysis system.展开更多
文摘In this paper, a kind of thermally linear polymer, poly N isopropylacrylamide(PNIPA) was packed into capillary electrophoresis, which can be used to separate bound and free estradiol antigen. A useful method for determination of estradiol in serum by hydrogel capillary electrophoretic immunoassay(CEIA) was developed. The influence of concentration and pH of buffer, concentration of hydrogel, applied voltage, temperature etc has been studied. The limit of detection and the linear range of estrodiol were 30 pg/mL and 0 1—10 ng/mL. [WT5HZ]
文摘A novel detection method of a tumor marker alpha-fetoprotein（AFP） in human sera via capillary（electrophoresis） immunoassay coupled with chemiluminescence detection（CEIACL） was established.After a simple non-competitive immunoassay procedure,seras were directly injected into capillary for electrophoresis with chemiluminescence reaction of luminol and H2O2 catalyzed by horseradish peroxidase and enhanced by（p-iodophenol）.The detection limit（S/N=3） of AFP is 0.85 μg/L.The CEIACL method proposed was successfully applied to the sensitive detection of AFP in human sera,which coincides with the results detected by Beckman automatic CL analyzer-access IA system.
文摘In this study, a capillary electrophoresis immunoassay(CEIA) method based on the enhanced chemiluminescence(CL) detection was developed. A horseradish peroxidase(HRP) label catalyzing the luminol/H 2O 2/p-iodophenol(PIP) reaction was performed, and the HRP was detected with detection limit(S/N=3) of 4.4 pmol/L(53 zmol), which is one of the highest sensitivity of HRP reported yet. The HRP was linked to bone morphogenic protein-2(BMP-2) in rat vascular smooth muscle(VSM) cells in noncompetitive format and first detected by CL. HRP-Ab 2-mAb-BMP-2 complexes were baseline separated from free HRP label in 3 min. The detection limit(S/N=3) of BMP-2 is 6.2 pmol/L(75 zmol). This technique has been applied to arteriosclerosis pathology research. The change of BMP-2 contentin VSM cells which were stimulated by angiotensin Ⅱ(AgⅡ) for different hours was investigated in the concentration range of 1.0-10.0 pmol/L. The results are in accord with that obtained by common used Pathology image analysis system.
