Related Experiment Video
Updated: Aug 9, 2026
10:10
Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells
Published on: October 27, 2009
Glucose increases spontaneous platelet aggregation in whole blood
J May1, W Loesche, S Heptinstall
1Department of Medicine, University Hospital, Queen's Medical Centre, Nottingham, U.K.
Thrombosis Research
|August 1, 1990
Summary
Adding glucose to whole blood samples significantly increases spontaneous platelet aggregation (SPA), a process linked to red blood cell fragility. This effect is mediated by reducing sugars, highlighting a potential mechanism in blood clotting.
Area of Science:
- Hematology
- Biochemistry
- Physiology
Background:
- Spontaneous platelet aggregation (SPA) is a critical factor in hemostasis and thrombosis.
- The influence of simple sugars on blood components, particularly red blood cells and platelets, requires further elucidation.
Purpose of the Study:
- To investigate the effect of glucose and other sugars on spontaneous platelet aggregation in whole blood.
- To explore the underlying mechanisms by which sugars influence platelet aggregation and red blood cell properties.
Main Methods:
- Addition of varying concentrations of glucose (10-50 mM) to citrated whole blood samples.
- Assessment of spontaneous platelet aggregation (SPA) upon stirring.
- Evaluation of the effects of EDTA, galactose, fructose, 2-deoxyglucose, sorbitol, and sucrose on SPA.
- Testing the inhibitory effects of tetramethylene glutaric acid and chlorpromazine on glucose-induced SPA.
Main Results:
- Glucose (10-50 mM) dose-dependently increased SPA in a time-independent manner.
- EDTA both prevented and reversed glucose-induced SPA.
- Galactose, fructose, and 2-deoxyglucose mimicked glucose's effect, while sorbitol and sucrose did not.
- The effect was not inhibited by an aldose reductase inhibitor but was reduced by chlorpromazine.
- Results support the hypothesis that reducing sugars potentiate SPA by releasing ADP from red blood cells.
Conclusions:
- Reducing sugars, including glucose, galactose, and fructose, potentiate spontaneous platelet aggregation in whole blood.
- This potentiation is likely mediated by the release of aggregating substances like ADP from red blood cells, which become more fragile in the presence of these sugars.
- The findings suggest a novel mechanism linking sugar metabolism and platelet activation, relevant to understanding blood disorders.
Related Concept Videos
01:18Structure and Function of Platelets
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
01:22Formation of the Platelet Plug
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...