Univerzitetna knjižnica Maribor (UKM)
Knjižnica je med tednom odprta od 8. do 19. ure, ob sobotah od 9. do 13. ure. Čitalnica ČUK je odprta od ponedeljka do sobote od 12. do 24. ure, ob nedeljah od 18. do 24. ure. Informacije: 02 25 07 431, ukm@um.si
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Effect of surface wettability and charge on protein adsorption onto implantable alginate-chitosan-alginate microcapsule surfacesXie, Hong-Guo ...Alginate-chitosan-alginate (ACA) microcapsules have been developed as a device for the transplantation of living cells. However, protein adsorption onto the surface of microcapsules immediately upon ... their implantation decides their ultimate biocompatibility. In this work, the chemical composition of the ACA membranes was determined using X-ray photoelectron spectroscopy (XPS). The surface wettability and charge were determined by contact angle and zeta potential measurements, respectively. Then, the effects of surface wettability and charge on bovine fibrinogen (Fgn) and gamma globulin (IgG) adsorption onto ACA microcapsules were evaluated. The results showed that ACA microcapsules had a hydrophilic membrane. So, the surface wettability of ACA microcapsules had little effect on protein adsorption. There was a negative zeta potential of ACA microcapsules which varies with the viscosity or G content of alginate used, indicating a varying degree of net negatively charged groups on the surface of ACA microcapsules. The amount of adsorbed protein increased with increasing of positive charge. Furthermore, the interaction between proteins and ACA microcapsules is dominated by electrostatic repulsion at pH 7.4 and that is of electrostatic attraction at pH 6.0. This work could help to explain the bioincompatibility of ACA microcapsules and will play an important role in the optimization of the microcapsule designVir: Journal of biomedical materials research. Part A. - ISSN 1549-3296 (Vol. 92, no. 4, apr. 2009, str. 1357-1365)Vrsta gradiva - članek, sestavni delLeto - 2009Jezik - angleškiCOBISS.SI-ID - 96755713
Avtor
Xie, Hong-Guo |
LI, Xiaoxia |
Lv, Guo-Jun |
Xie, Wei-Yang |
Zhu, Jing |
Luxbacher, Thomas |
Ma, Ron |
Ma, Xiao-Jun
Teme
microcapsule |
protein adsorption |
surface charge |
fibrinogen |
gamma globulin
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vir: Journal of biomedical materials research. Part A. - ISSN 1549-3296 (Vol. 92, no. 4, apr. 2009, str. 1357-1365)
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Xie, Hong-Guo | ![]() |
LI, Xiaoxia | ![]() |
Lv, Guo-Jun | ![]() |
Xie, Wei-Yang | ![]() |
Zhu, Jing | ![]() |
Luxbacher, Thomas | 51230 |
Ma, Ron | ![]() |
Ma, Xiao-Jun | ![]() |
Vir: Osebne bibliografije
in: SICRIS
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