Dorsal root ganglia control nociceptive input to the central nervous system.
Dorsal root ganglia control nociceptive input to the central nervous system.
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DOI:
10.1371/journal.pbio.3001958
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发表时间:
2023-01
期刊:
影响因子:
9.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Accumulating observations suggest that peripheral somatosensory ganglia may regulate nociceptive transmission, yet direct evidence is sparse. Here, in experiments on rats and mice, we show that the peripheral afferent nociceptive information undergoes dynamic filtering within the dorsal root ganglion (DRG) and suggest that this filtering occurs at the axonal bifurcations (t-junctions). Using synchronous in vivo electrophysiological recordings from the peripheral and central processes of sensory neurons (in the spinal nerve and dorsal root), ganglionic transplantation of GABAergic progenitor cells, and optogenetics, we demonstrate existence of tonic and dynamic filtering of action potentials traveling through the DRG. Filtering induced by focal application of GABA or optogenetic GABA release from the DRG-transplanted GABAergic progenitor cells was specific to nociceptive fibers. Light-sheet imaging and computer modeling demonstrated that, compared to other somatosensory fiber types, nociceptors have shorter stem axons, making somatic control over t-junctional filtering more efficient. Optogenetically induced GABA release within DRG from the transplanted GABAergic cells enhanced filtering and alleviated hypersensitivity to noxious stimulation produced by chronic inflammation and neuropathic injury in vivo. These findings support “gating” of pain information by DRGs and suggest new therapeutic approaches for pain relief. Information transmitted along the peripheral somatosensory nerves can be actively modified at the dorsal root ganglion (DRG). This study demonstrates the existence of tonic and dynamic GABAergic filtering of action potentials traveling through the DRG, with therapeutic implications for pain relief.
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影响因子:
64.5
作者:
Duan B;Cheng L;Bourane S;Britz O;Padilla C;Garcia-Campmany L;Krashes M;Knowlton W;Velasquez T;Ren X;Ross S;Lowell BB;Wang Y;Goulding M;Ma Q
通讯作者:
Ma Q
DOI:
10.1172/jci86812
发表时间:
2017-05-01
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
Du X;Hao H;Yang Y;Huang S;Wang C;Gigout S;Ramli R;Li X;Jaworska E;Edwards I;Deuchars J;Yanagawa Y;Qi J;Guan B;Jaffe DB;Zhang H;Gamper N
通讯作者:
Gamper N
DOI:
10.1002/cne.24346
发表时间:
2018-02-15
期刊:
The Journal of comparative neurology
影响因子:
--
作者:
Llewellyn-Smith IJ;Basbaum AI;Bráz JM
通讯作者:
Bráz JM
影响因子:
7.4
作者:
Du X;Hao H;Gigout S;Huang D;Yang Y;Li L;Wang C;Sundt D;Jaffe DB;Zhang H;Gamper N
通讯作者:
Gamper N
影响因子:
5.3
作者:
Al-Basha, Dhekra;Prescott, Steven A.
通讯作者:
Prescott, Steven A.