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Related Experiment Videos

Peripheral nerve function during hyperglycemic clamping in healthy subjects.

S H Sindrup1, B Ejlertsen, H Gjessing

  • 1Department of Internal Medicine, Fredericia Hospital, Denmark.

Acta Neurologica Scandinavica
|August 1, 1988
PubMed
Summary
This summary is machine-generated.

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Short-term hyperglycemia with physiological hyperinsulinemia improved peripheral nerve function in non-diabetic subjects. Specifically, it increased sensory nerve conduction velocity and decreased motor latency.

Area of Science:

  • Neuroscience
  • Endocrinology
  • Metabolic Research

Background:

  • Hyperglycemia is a hallmark of diabetes, often associated with peripheral neuropathy.
  • The effects of transient hyperglycemia on nerve function in non-diabetic individuals are not fully understood.

Purpose of the Study:

  • To investigate the acute effects of controlled hyperglycemia and hyperinsulinemia on peripheral nerve function.
  • To determine changes in nerve conduction velocity and latency under induced hyperglycemic conditions.

Main Methods:

  • 10 non-diabetic subjects underwent intravenous glucose infusion to induce hyperglycemia (17.1 +/- 1.4 mmol/l) for 120 minutes.
  • Sensory and motor nerve conduction velocities and distal motor latency of the ulnar nerve were measured before, during, and after hyperglycemia.

Related Experiment Videos

  • Physiological hyperinsulinemia was maintained throughout the glucose infusion.

    • Main Results:

    • Mean sensory nerve conduction velocity significantly increased from 57.7 m/s to 59.6 m/s (P < 0.05) during hyperglycemia.
    • Mean distal motor latency significantly decreased from 3.1 ms to 2.9 ms (P < 0.05) after 120 minutes of hyperglycemia.
    • Motor nerve conduction velocity showed an insignificant increase.

    Conclusions:

    • Short-term hyperglycemia combined with physiological hyperinsulinemia appears to enhance peripheral sensory nerve function.
    • These findings suggest a potential acute, reversible effect of elevated glucose on nerve electrophysiology.