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Innocuous pressure sensation requires A-type afferents but not functional ΡΙΕΖΟ2 channels in humans.

Case, L.K., Liljencrantz, J., Madian, N., Necaise, A., Tubbs, J., McCall, M., Bradson, M.L., Szczot, M., Pitcher, M.H., Ghitani, N., Frangos, E., Cole, J., Bharucha-Goebel, D., Saade, D., Ogata, T., Donkervoort, S., Foley, A.R., Bönnemann, C.G., Olausson, H., Bushnell, M.C. and Chesler, A.T., 2021. Innocuous pressure sensation requires A-type afferents but not functional ΡΙΕΖΟ2 channels in humans. Nature Communications, 12 (1), 657.

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DOI: 10.1038/s41467-021-20939-5

Abstract

The sensation of pressure allows us to feel sustained compression and body strain. While our understanding of cutaneous touch has grown significantly in recent years, how deep tissue sensations are detected remains less clear. Here, we use quantitative sensory evaluations of patients with rare sensory disorders, as well as nerve blocks in typical individuals, to probe the neural and genetic mechanisms for detecting non-painful pressure. We show that the ability to perceive innocuous pressures is lost when myelinated fiber function is experimentally blocked in healthy volunteers and that two patients lacking Aβ fibers are strikingly unable to feel innocuous pressures at all. We find that seven individuals with inherited mutations in the mechanoreceptor PIEZO2 gene, who have major deficits in touch and proprioception, are nearly as good at sensing pressure as healthy control subjects. Together, these data support a role for Aβ afferents in pressure sensation and suggest the existence of an unknown molecular pathway for its detection.

Item Type:Article
ISSN:2041-1723
Additional Information:Funding Open Access funding provided by the National Institutes of Health (NIH).
Group:Faculty of Health & Social Sciences
ID Code:35162
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:08 Feb 2021 11:19
Last Modified:27 May 2021 07:56

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