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Microcirculation and hemorheology of children with type I diabetes
Insights
Diabetic children show increased capillary tortuosity and decreased erythrocyte velocity. Good glycemic control in type 1 diabetes improves blood flow and cell flexibility, suggesting better long-term outcomes.
Area of Science:
- Pediatrics
- Ophthalmology
- Hematology
Background:
- Type 1 diabetes mellitus (T1DM) is a chronic condition affecting children, with microvascular complications being a significant concern.
- Understanding the impact of T1DM on blood rheology and retinal microcirculation is crucial for predicting disease progression.
Purpose of the Study:
- To compare microcirculatory and hemorheological parameters between children with T1DM and healthy controls.
- To investigate the influence of glycemic control on these parameters in pediatric T1DM.
Main Methods:
- Video fluorescence angiography for retinal blood flow.
- Video capillaroscopy for erythrocyte velocity and capillary tortuosity in nailfold capillaries.
- Measurement of plasma viscosity, erythrocyte rigidity, and hematocrit.
Main Results:
- Diabetic children exhibited significantly higher capillary tortuosity and lower erythrocyte velocity compared to healthy children.
- Erythrocyte deformability was significantly reduced in diabetic children.
- Better glycemic control (stabilization) correlated with improved rheological parameters.
Conclusions:
- Children with T1DM have impaired microcirculation and altered blood rheology.
- Good glycemic control is associated with more favorable rheological parameters in pediatric T1DM.
- Long-term follow-up is needed to determine the prognostic value of these findings.
Abstract:
A group of 53 children, suffering from diabetes mellitus type I and a group of 12 healthy children were compared. In both groups the following data were determined: Haemoglobin A1C, retinal blood flow (video fluorescence angiography), erythrocyte velocity in finger nailfold capillaries (video capillaroscopy), capillary tortuosity, plasma viscosity, erythrocyte rigidity, and haematocrit. The degree of capillary tortuosity was significantly elevated and erythrocyte velocity was significantly diminished in the group of diabetic children in comparison to the healthy children. Regarding rheological data there was a significant decrease in erythrocyte deformability for the diabetic children. Diabetic children with good stabilization presented better rheological parameters than the poorly stabilized ones. Although these findings provided sufficient information, it will be necessary to cover a long follow up period to judge the prognosis of good and poorly stabilized diabetic children.