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Concomitant Peripheral Neuropathy and Type 2 Diabetes Impairs Postexercise Cutaneous Perfusion and Flowmotion
Cécile Reynès1, Jean-Baptiste Beaume1, Françoise Latil-Plat2
1Avignon Université, LAPEC EA4278, F-84000, Avignon, France.
Peripheral neuropathy impairs exercise-induced microvascular responses, affecting endothelial and neurogenic mechanisms. This study highlights altered blood perfusion recovery in type 2 diabetes patients with neuropathy.
Area of Science:
- Physiology
- Cardiovascular Science
- Neurology
Background:
- Type 2 diabetes and peripheral neuropathy are linked to microvascular dysfunction at rest.
- Limited data exists on microvascular perfusion during exercise in these populations.
Purpose of the Study:
- To investigate microvascular perfusion changes during postexercise recovery.
- To compare individuals with type 2 diabetes (with/without peripheral neuropathy), obesity, and healthy controls.
Main Methods:
- Assessed skin blood perfusion using laser Doppler flowmetry (LDF) and laser speckle contrast imaging.
- Applied wavelet transformation to LDF for analyzing specific blood perfusion control mechanisms.
- Measured changes before and after a 6-minute walking test.
Main Results:
- Skin blood perfusion increased post-exercise in all groups.
- Postexercise recovery of blood perfusion was blunted in individuals with peripheral neuropathy.
- Endothelial (nitric oxide-dependent/independent) and neurogenic contributions to blood flow regulation were altered in neuropathy.
Conclusions:
- Peripheral neuropathy, at any stage, disrupts the microvascular response to exercise.
- Impaired endothelial and neurogenic mechanisms underlie these altered responses.
- Findings emphasize the impact of neuropathy on exercise-induced vascular adjustments.
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