Platelet receptor redox regulation
Several recent findings point to an important role for redox regulation of platelet responses to collagen involving the receptor, glycoprotein (GP)VI. First, the antioxidant dietary compound, quercetin, was shown to inhibit GPVI-dependent platelet activation and signaling responses to collagen. Seco...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Informa Healthcare
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/44454 |
| _version_ | 1848757005453361152 |
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| author | Arthur, J. Gardiner, E. Kenny, D. Andrews, R. Berndt, Michael |
| author_facet | Arthur, J. Gardiner, E. Kenny, D. Andrews, R. Berndt, Michael |
| author_sort | Arthur, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Several recent findings point to an important role for redox regulation of platelet responses to collagen involving the receptor, glycoprotein (GP)VI. First, the antioxidant dietary compound, quercetin, was shown to inhibit GPVI-dependent platelet activation and signaling responses to collagen. Second, collagen increased platelet production of the oxygen radical, superoxide anion (O2.-), mediated by the multi-subunit enzyme nicotinamide adenine dinucleotide (phosphate) (NAD(P)H) oxidase. In that case, O 2.- was implicated in regulating not initial aggregation, but collagen-induced thrombus stabilization involving release of ADP. Third, our laboratory showed that an unpaired thiol in the GPVI cytoplasmic tail undergoes rapid oxidation to form GPVI homodimers following ligand binding, preceding GPVI signaling and ectodomain metalloproteolysis, and indicating formation of an oxidative submembranous environment in activated platelets. This review examines receptor/redox regulation in other cells, and relevance to the pathophysiological function of GPVI and other platelet receptors initiating thrombus formation in haemostasis or thrombotic diseases such as heart attack and stroke. © 2008 Informa UK Ltd. |
| first_indexed | 2025-11-14T09:21:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-44454 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:21:13Z |
| publishDate | 2008 |
| publisher | Informa Healthcare |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-444542017-09-13T14:14:26Z Platelet receptor redox regulation Arthur, J. Gardiner, E. Kenny, D. Andrews, R. Berndt, Michael Several recent findings point to an important role for redox regulation of platelet responses to collagen involving the receptor, glycoprotein (GP)VI. First, the antioxidant dietary compound, quercetin, was shown to inhibit GPVI-dependent platelet activation and signaling responses to collagen. Second, collagen increased platelet production of the oxygen radical, superoxide anion (O2.-), mediated by the multi-subunit enzyme nicotinamide adenine dinucleotide (phosphate) (NAD(P)H) oxidase. In that case, O 2.- was implicated in regulating not initial aggregation, but collagen-induced thrombus stabilization involving release of ADP. Third, our laboratory showed that an unpaired thiol in the GPVI cytoplasmic tail undergoes rapid oxidation to form GPVI homodimers following ligand binding, preceding GPVI signaling and ectodomain metalloproteolysis, and indicating formation of an oxidative submembranous environment in activated platelets. This review examines receptor/redox regulation in other cells, and relevance to the pathophysiological function of GPVI and other platelet receptors initiating thrombus formation in haemostasis or thrombotic diseases such as heart attack and stroke. © 2008 Informa UK Ltd. 2008 Journal Article http://hdl.handle.net/20.500.11937/44454 10.1080/09537100701817224 Informa Healthcare restricted |
| spellingShingle | Arthur, J. Gardiner, E. Kenny, D. Andrews, R. Berndt, Michael Platelet receptor redox regulation |
| title | Platelet receptor redox regulation |
| title_full | Platelet receptor redox regulation |
| title_fullStr | Platelet receptor redox regulation |
| title_full_unstemmed | Platelet receptor redox regulation |
| title_short | Platelet receptor redox regulation |
| title_sort | platelet receptor redox regulation |
| url | http://hdl.handle.net/20.500.11937/44454 |