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Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States
Published on: April 1, 2015
[Platelet abnormalities in type 2 diabetes mellitus]
Cuauhtémoc Matadamas-Zárate1, Julia Hernández-Jerónimo, Eduardo Pérez-Campos
1HGZ No. 1, IMSS, Facultad de Medicina, UABJO, Oaxaca, Oax.
Insights
Platelets are crucial in diabetic vascular complications, exhibiting abnormalities like hypersensitivity and resistance to therapies. Understanding these platelet dysfunctions is key to managing diabetes-related cardiovascular risks.
Area of Science:
- Cardiovascular Medicine
- Endocrinology
- Hematology
Context:
- Diabetes mellitus is a global health concern, with vascular complications driving significant morbidity and mortality.
- Diabetic patients experience accelerated atherothrombosis, exceeding that seen in other conditions.
Purpose:
- To review platelet abnormalities associated with diabetes mellitus.
- To explore the role of platelets in diabetic atherothrombosis and vascular complications.
Summary:
- Diabetes mellitus is linked to numerous pro-thrombotic coagulation system abnormalities, including endothelial dysfunction, platelet hyperreactivity, and impaired fibrinolysis.
- Platelets in diabetics show hypersensitivity to agonists, reduced response to antiplatelet drugs, and resistance to insulin, contributing to atherothrombosis.
- These platelet dysfunctions may stem from hyperglycemia-induced toxic microenvironments or intrinsic platelet defects, suggesting platelets as a target for insulin resistance effects.
Impact:
- Highlights platelets as a critical factor in the pathogenesis of diabetic vascular complications.
- Suggests that targeting platelet abnormalities could offer novel therapeutic strategies for managing diabetes-related cardiovascular disease.
Abstract:
Diabetes mellitus is a problem of health worldwide being vascular complications the main causes of morbidity and mortality in this population. Diabetics have a fast atherothrombotic evolution which is worse than that observed for other clinical entities; however, hyperglycemia itself may not totally explain the ischemic complications observed in these patients. Most ischemic arterial events are precipitated by plaque rupture, platelet activation, and thrombosis. Several abnormalities in the blood coagulation system have been described associated to diabetes mellitus, all of them predisposing to thrombosis: endothelial cell dysfunction, platelet hyperreactivity, thrombin generation and hypofibrinolysis. Platelets play a key role in diabetic atherothrombosis due to platelet hypersensitivity to physiological agonists, low response to therapeutical antiplatelet agents, platelet hyperreactivity in sites of endothelial cell damage, hyperaggregability, resistance to the inhibitory effects of the insulin, and low endothelial production of prostacyclin and nitric oxide. All these phenomena have been associated to either a toxic microenvironment due to hyperglycemia or to intrinsic platelet abnormalities. Based on all these facts, it is proposed that platelets may be another target for the negative effects of insulin-resistance state. Because platelets are crucial in the atherosclerotic process and in the genesis of the vascular complications of diabetes mellitus, this review analyses the platelet abnormalities observed in this metabolic disease.
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