Abstract
Objeetive To explore change of platelet glycoproteins Ⅵ(GPⅥ)in patients with type 2 diabetes mellitus and its clinical significance.Methods The surface expression of platelet glycoprotein Ⅵ was determined by flow cytometry in 56 patients with type 2 diabetes mellitus and 61 normal individuals.Plasma GP Ⅵ concentration was measured by ELISA in 30 patients with type 2 diabetes mellitus.Platelet surface CD62P was analyzed by flow cytometry and HbA1c was determined in Datients with type 2 diabetes mellitus.Results The geometric mean fluorescence of platelet surface GPⅥ in Datients with type 2 diabetes mellitus was 93.66±35.24,which was significantly enhanced compared with normal subjects (62.83±24.2)(t=-4.927,P＜0.05).Nine patients were positive in plasma GPⅥ among 30 Datients with type 2 diabetes mellitus.Plasma GP Ⅵ concentrations in 9 positive patients were conversely correlated with platelet surface GPⅥ expression(r=-0.633,P＜0.05).However,there was no correlation between platelet Surface CD62P and plasma HbA1c concentrations, and the correlation coemcient is -0.333 and -0.417,respectively(P＞0.05).There was no correlation between platelet surface GP Ⅵ expression with C062P and HbA1c in patients with type 2 diabetes mellitus and the conrrelation coefficient is -0.009 and -0.217,respectively(P＞0.05).Conclusions GPⅥ expression on platelet surface is elevated in Datients with type 2 diabetes mellitus and the determination of platelet surface GPⅥ and plasma GPⅥ concennlation may helP to prognosticate the risk of thrombotic events and may play an important role in evaluating platelet activation in patients with type 2 diabetes mellitus. Key words: Diabetes mellitus,type 2; Platelet membrane glycoproteins; Platelet activation; Flow cytometry
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