Platelet and monoclonal antibody binding to fibrinogen adsorbed on glow-discharge-deposited polymers.
Platelet and monoclonal antibody binding to fibrinogen adsorbed on glow-discharge-deposited polymers.
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血小板和单克隆抗体与吸附在辉光放电沉积聚合物上的纤维蛋白原结合。
DOI:
10.1002/jbm.820290609
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
Lew,KR
中科院分区:
文献类型:
--
作者:
Kiaei,D;Hoffman,AS;Horbett,TA;Lew,KR
The state of fibrinogen adsorbed on untreated and glow‐discharge‐treated surfaces was examined by measuring platelet adhesion, monoclonal antibody (mAb) binding, the amount of fibrinogen adsorbed, and the amount of adsorbed fibrinogen which could be eluted with sodium dodecyl sulfate (SDS). Tetrafluoroethylene (TFE) glow‐discharge‐treated polymers have a lower surface free energy (in air) and retain a larger fraction of adsorbed fibrinogen than untreated surfaces after SDS elution. Platelet adhesion was lowest on the TFE‐treated surfaces which retain the highest amounts of fibrinogen after SDS elution. Fibrinogen may undergo unfolding or spreading on the TFE‐treated surfaces to minimize interfacial free energy (in water) and maximize protein–;surface interactions. When it is adsorbed on the TFE‐treated surfaces, fibrinogen evidently assumes a state which somehow prevents its recognition and binding by platelet receptors. Monoclonal antibodies that bind to the three regions in fibrinogen thought to be involved in platelet adhesion were therefore used to detect changes in adsorbed fibrinogen. These regions and the antibodies which bind to them are: the COOH‐terminal of the γ‐chain, mAb M1; the RGD peptide sequence at Aα 95–98, mAb R1; the RDG sequence at Aα 572–575, mAb R2. For fibrinogen adsorbed on the untreated or TFE‐treated surfaces, M1 and R2 binding was relatively high compared to background, while R1 binding was low. However, the amount of binding of each mAb to fibrinogen adsorbed on the TFE‐treated surfaces was equal to or greater than fibrinogen adsorbed to the untreated surfaces. Therefore, antibody‐detectable changes in the platelet binding regions of adsorbed fibrinogen that might have been caused by conformational or orientational rearrangements were not observed for the TFE‐treated surfaces. The data suggest that the tight binding of fibrinogen on a surface may directly affect the ability of the fibrinogen to interact with the platelet receptors—i.e., that fibrinogen must be loosely held to facilitate maximal interaction with platelet receptors. © 1995 John Wiley & Sons, Inc.
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DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
Young Br;Lambrecht Lk;S. Cooper;D. Mosher
通讯作者:
D. Mosher
DOI:
--
发表时间:
1992
期刊:
Journal of biomaterials science. Polymer edition
影响因子:
--
作者:
Kiaei,D;Hoffman,AS;Horbett,TA
通讯作者:
Horbett,TA
DOI:
10.1163/156856289x00154
发表时间:
1990
期刊:
Journal of biomaterials science. Polymer edition
影响因子:
--
作者:
Bohnert,JL;Fowler,BC;Horbett,TA;Hoffman,AS
通讯作者:
Hoffman,AS
DOI:
--
发表时间:
1994
期刊:
Journal of Biomedical Materials Research
影响因子:
--
作者:
J. Sheppard;W. G. McClung;I. Feuerstein
通讯作者:
I. Feuerstein
DOI:
--
发表时间:
1969
期刊:
Journal of Laboratory and Clinical Medicine
影响因子:
--
作者:
M. Packham;M. Packham;G. Evans;G. Evans;Glynn Mf;Glynn Mf;Mustard Jf;Mustard Jf
通讯作者:
Mustard Jf