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Diabetic lipohypertrophy delays insulin absorption.

R J Young, W J Hannan, B M Frier

    Diabetes Care
    |September 1, 1984
    PubMed
    Summary

    Lipohypertrophy at insulin injection sites significantly slows insulin absorption in diabetic patients. This finding highlights a crucial factor affecting insulin delivery and glycemic control.

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    Area of Science:

    • Endocrinology
    • Metabolic Disorders
    • Pharmacokinetics

    Background:

    • Lipohypertrophy, a common complication of insulin therapy, involves abnormal fat tissue growth at injection sites.
    • Altered subcutaneous tissue can impact the pharmacokinetics of injected medications, particularly insulin.

    Purpose of the Study:

    • To investigate the effect of lipohypertrophy on the absorption rate of subcutaneously injected insulin.
    • To quantify the difference in insulin clearance between lipohypertrophic and normal subcutaneous tissue.

    Main Methods:

    • A study involving 12 insulin-dependent diabetic patients.
    • Comparison of 125I-insulin clearance from lipohypertrophic versus non-hypertrophied injection sites within the same patients.

    Main Results:

    • Insulin clearance was significantly slower from lipohypertrophic sites compared to normal sites (35.3% vs 43.8% in 3 hours, P < 0.05).
    • The impact of lipohypertrophy on insulin absorption varied among patients but was clinically significant for some.

    Conclusions:

    • Injection site lipohypertrophy is a significant factor that impairs subcutaneous insulin absorption.
    • Understanding and managing lipohypertrophy is essential for optimizing insulin therapy and glycemic control in diabetic patients.

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