Quantitative sensory testing-based sensory phenotypes align with measures of peripheral nerve damage in patients with painful polyneuropathies - PubMed
2 days ago
- #Quantitative Sensory Testing
- #Peripheral Neuropathy
- #Neuropathic Pain
- Quantitative sensory testing (QST) stratifies neuropathic pain patients into sensory phenotypes.
- Study links QST-based phenotypes with peripheral nerve damage measures in painful polyneuropathy.
- 130 patients analyzed for nerve conduction, skin biopsy, and QST at foot dorsum.
- Four QST phenotypes identified: Sensory Loss, Mechanical Hyperalgesia, Thermal Hyperalgesia, Healthy.
- Sensory Loss phenotype shows lower sural SNAP amplitudes and nerve fiber densities.
- Mechanical Hyperalgesia associated with higher sural SNAP amplitudes and TRPV1/GAP43 ratios.
- Thermal Hyperalgesia linked to higher sural SNAP amplitudes and PGP9.5 nerve fiber density.
- Findings support QST's role in mechanism-based patient stratification for neuropathic pain.