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The influence of platelet glycoprotein polymorphisms on receptor function and risk for thrombosis.

Abstract：

:With regard to hemostasis and thrombosis, collagens are among the most important physiologic components of the extracellular matrix in their role as platelet activators. Differences in the rate of platelet activation markedly influence normal hemostasis and the pathological outcome of thrombosis. Thus, collagen receptors, such as the integrin alpha2beta1 and indirectly, GPIb alpha, represent a relatively unexploited target of pharmacological control and are only recently becoming appreciated as potential factors in the generic risk for thrombosis. In general, the importance platelet glycoprotein polymorphisms as genetic risk factors for arterial thrombosis is a new area of human genomics that needs to be carefully addressed. Discrepancies in the degree to which they are reported to contribute to risk for clinical thrombosis will only be resolved once there is a universal standard for clinical study design. Most of the clinical studies differ by patient population size, ethnicity, bias in the selection of patients and controls, plurality in clinical endpoints and variation of environmental factors. Despite these differences, there is substantial evidence that the integrin beta3 PlA2 haplotype, the GPIb alpha Met145 haplotype, the GPIb alpha -5C haplotype and the integrin alpha2 haplotype 1 (807T) each contribute to the risk for and morbidity of thrombotic disease. There may remain dispute as to the extent of their contribution. However, well-designed, large, prospective, genetic and epidemiologic studies are needed to clarify the role of these and other platelet receptor polymorphisms. Most importantly, the cumulative effects of multiple platelet and plasma glycoproteins SNPs to thrombotic risk must be evaluated concurrently. Additional in vitro studies of the functional relevance underlying these polymorphisms are needed to provide a sound biological explanation for the results of clinical correlations. The opportunity now exists to make significant inroads into the development of strategies for the prevention of thrombotic disease.

journal_name

Vox Sang

journal_title

Vox sanguinis

authors

Kunicki TJ,Nugent DJ

doi

10.1111/j.1423-0410.2002.tb05274.x

subject

Has Abstract

pub_date

2002-08-01 00:00:00

pages

85-90

eissn

0042-9007

issn

1423-0410

journal_volume

83 Suppl 1

pub_type

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The influence of platelet glycoprotein polymorphisms on receptor function and risk for thrombosis.