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Reticuloendothelial cell dysfunction in diabetes and hyperlipidemia.

G Drivas, N Wardle

    Metabolism: Clinical and Experimental
    |October 1, 1978
    PubMed
    Summary
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    Diabetic patients with kidney disease and retinopathy show impaired Kupffer cell phagocytosis, increasing infection risk. This defect, linked to T3 deficiency or lipid issues, also affects hypothyroidism and hyperlipidemic alcoholics.

    Area of Science:

    • Immunology
    • Endocrinology
    • Nephrology

    Background:

    • Kupffer cells are crucial for immune surveillance in the liver.
    • Diabetic microangiopathy involves cellular dysfunction.
    • Phagocytic capacity can be affected by metabolic and endocrine factors.

    Purpose of the Study:

    • To investigate Kupffer cell phagocytic function in diabetic patients with specific complications.
    • To explore the underlying causes of defective phagocytosis in diabetes.
    • To assess the implications for infection risk in related conditions.

    Main Methods:

    • Utilized microaggregated iodinated human serum albumin clearance as a 'stress test'.
    • Assessed phagocytosis by Kupffer cells in diabetic patients with K.W. nephropathy and retinopathy.

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  • Compared findings with non-diabetic controls and considered factors like uremia, T3 levels, and lipids.

    • Main Results:

    • Demonstrated defective Kupffer cell phagocytosis in diabetic patients with K.W. nephropathy and proliferative retinopathy.
    • Ruled out uremia as the cause of impaired phagocytosis.
    • Identified potential contributing factors including T3 deficiency and lipid deposition.

    Conclusions:

    • Diabetic microangiopathy is associated with impaired Kupffer cell phagocytic function.
    • This defect may predispose patients to infections.
    • Hypothyroidism and hyperlipidemia in alcoholics also show impaired phagocytosis, highlighting shared risks.