Related Experiment Videos
Insulin sensitivity and sensory nerve function in non-diabetic human subjects
C A Delaney1, J V Mouser, R A Westerman
1Department of Physiology, Monash University, Clayton, Vic., Australia.
Neuroscience Letters
|October 24, 1994
Summary
Reduced insulin sensitivity negatively impacts sensory nerve function, even without high blood sugar. This suggests insulin
Area of Science:
- Neuroscience
- Endocrinology
- Metabolic Research
Background:
- Insulin resistance is a hallmark of metabolic dysfunction.
- Diabetic neuropathy is a common complication of diabetes.
- The direct impact of insulin sensitivity on nerve function is not fully understood.
Purpose of the Study:
- To investigate the direct effect of reduced insulin sensitivity on sensory nerve function.
- To determine if insulin deficits impact nerve function independently of blood glucose levels.
Main Methods:
- Utilized the insulin tolerance test (ITT) to measure insulin sensitivity.
- Assessed fasting plasma insulin levels.
- Measured thermal sensation using warm and cold perception thresholds.
Main Results:
- Reduced insulin sensitivity was associated with impaired thermal sensation.
- Sensory nerve function deteriorated with fasting hyperinsulinaemia despite normoglycaemia.
- Findings indicate a link between insulin action and small sensory nerve function.
Conclusions:
- Insulin plays a role in maintaining sensory nerve function.
- Impaired insulin action, independent of glycaemic control, may contribute to small fiber neuropathy.
- These findings suggest a potential mechanism in the etiology of diabetic neuropathy.