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[Status of cellular immunity in diabetic microangiopathy detected by skin biopsy]
Abstract:
As compared with normal persons, in 46 patients with diabetes mellitus there was a significant decrease in spontaneous leukocyte migration, a reduction in the absolute count of T-, B- and O-lymphocytes, and a rise in the relative count of D-lymphocytes. The disorders of cell-mediated immunity are formed during the first five years of illness. They do not depend on the diabetes severity, distinctly growing on with the appearance and increase of the degree of diabetic microangiopathy diagnosed on morphological analysis of skin biopsy specimens.
Insights
Diabetes mellitus significantly impairs cell-mediated immunity, decreasing key lymphocyte counts and altering migration patterns. These immune changes develop early and worsen with microangiopathy, regardless of diabetes severity.
Area of Science:
- Immunology
- Endocrinology
- Pathology
Context:
- Diabetes mellitus is a chronic metabolic disorder associated with immune dysregulation.
- Cell-mediated immunity plays a crucial role in host defense and is potentially affected by diabetes.
- Diabetic microangiopathy is a common complication affecting small blood vessels.
Purpose:
- To investigate the impact of diabetes mellitus on cell-mediated immunity.
- To determine the relationship between the duration of diabetes, its severity, and immune system alterations.
- To assess the correlation between diabetic microangiopathy and changes in immune cell profiles.
Summary:
- Patients with diabetes mellitus exhibited significantly reduced spontaneous leukocyte migration and lower absolute counts of T-, B-, and O-lymphocytes compared to healthy individuals.
- A relative increase in D-lymphocytes was observed in diabetic patients.
- These immune system disorders manifest within the first five years of diabetes and are independent of overall disease severity.
- Immune dysregulation progresses with the development and severity of diabetic microangiopathy, as confirmed by skin biopsy analysis.
Impact:
- Highlights early immune system dysfunction in diabetes mellitus.
- Suggests immune changes are linked to microvascular complications rather than glycemic control alone.
- Provides insights into the pathogenesis of diabetes-related immune alterations and complications.