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Title of Journal: Microchim Acta

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Abbravation: Microchimica Acta

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Springer Vienna

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DOI

10.1007/s10959-006-0049-7

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1436-5073

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Transmembrane electron transfer in red blood cell

Authors: Chunmei Yu Li Wang Zhenkun Zhu Ning Bao Haiying Gu
Publish Date: 2013/09/17
Volume: 181, Issue: 1-2, Pages: 55-61
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Abstract

We have studied the transmembrane electron transfer in human red blood cells RBCs immobilized in a chitosan film on a glassy carbon electrode GCE Electron transfer results from the presence of hemoglobin Hb in the RBCs The electron transfer rate k s of Hb in RBCs is 042 s−1 and 113 s−1 for Hb directly immobilized in the chitosan film Only Hb molecules in RBCs that are closest to the plasma membrane and the surface of the electrode can undergo electron transfer to the electrode The immobilized RBCs displayed sensitive electrocatalytic response to oxygen and hydrogen peroxide It is believed that this cellular biosensor is of potential significance in studies on the physiological status of RBCs based on observing their electron transfer on the modified electrodeThe transmembrane electron transfer rate of Hb in RBCs is slower than hemoglobin molecules directly immobilized on the chitosan film Only those hemoglobin in RBCs closest to the plasma membrane and electrode could exchange electrons with the electrode The immobilized RBCs showed sensitive electrocatalytic response to O2 and H2O2This work was financially supported by the National Natural Science Foundation of China 81001263 21175075 20875051 and 21075070 the Natural Science Foundation of Jiangsu Province BK2009152 BK2011047 the Universities Natural Science Foundation of Jiangsu Province 10KJB150015 the Application Research Item of Nantong City BK2011020 and A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions PAPD

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