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Insulin tolerance in laminitic ponies.

J R Coffman, C M Colles

    Canadian Journal of Comparative Medicine : Revue Canadienne De Medecine Comparee
    |July 1, 1983
    PubMed
    Summary
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    Laminitic ponies show reduced insulin sensitivity, indicated by higher blood glucose levels. These ponies also exhibit a more pronounced drop in blood pressure after insulin administration compared to healthy controls.

    Area of Science:

    • Veterinary Science
    • Equine Endocrinology
    • Metabolic Disorders

    Background:

    • Chronic laminitis in ponies is often associated with underlying metabolic dysfunctions.
    • Insulin resistance is a suspected contributing factor in the pathogenesis of laminitis.

    Purpose of the Study:

    • To evaluate insulin sensitivity in ponies with chronic laminitis.
    • To investigate the relationship between insulin response and cardiovascular parameters in affected ponies.

    Main Methods:

    • Insulin tolerance tests were performed on ponies with episodic chronic laminitis and control ponies.
    • Blood glucose and arterial blood pressure (diastolic, systolic, mean) were measured.
    • Changes in glucose and blood pressure post-insulin administration were analyzed.

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    Main Results:

    • Laminitic ponies demonstrated significantly lower sensitivity to insulin, evidenced by blood glucose levels.
    • A significantly greater decrease in diastolic, systolic, and mean arterial blood pressure was observed in laminitic ponies post-insulin.

    Conclusions:

    • Ponies with chronic laminitis exhibit impaired insulin sensitivity.
    • Insulin administration affects blood pressure differently in laminitic ponies, suggesting a complex physiological response.