A search for activation of C nociceptors by sympathetic fibers in complex regional pain syndrome.
A search for activation of C nociceptors by sympathetic fibers in complex regional pain syndrome.
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DOI:
10.1016/j.clinph.2009.12.038
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发表时间:
2010-07
期刊:
影响因子:
--
通讯作者:
Ochoa JL
中科院分区:
文献类型:
--
作者:
Campero M;Bostock H;Baumann TK;Ochoa JL
Although the term ‘reflex sympathetic dystrophy’ has been replaced by ‘complex regional pain syndrome’ (CRPS) type I, there remains a widespread presumption that the sympathetic nervous system is actively involved in mediating chronic neuropathic pain [“sympathetically maintained pain” (SMP)], even in the absence of detectable neuropathophysiology. We have used microneurography to evaluate possible electrophysiological interactions in 24 patients diagnosed with CRPS I (n=13), or CRPS II (n=11) by simultaneously recording from single identified sympathetic efferent fibers and C nociceptors, while provoking sympathetic neural discharges in cutaneous nerves. We assessed potential effects of sympathetic activity upon 35 polymodal nociceptors and 19 mechano-insensitive nociceptors, recorded in CRPS I (26 nociceptors) and CRPS II patients (28 nociceptors). No evidence of activation of nociceptors related to sympathetic discharge was found, although nociceptors in 6 CRPS II patients exhibited unrelated spontaneous pathological nerve impulse activity. We conclude that activation of nociceptors by sympathetic efferent discharges is not a cardinal pathogenic event in either CRPS I or CRPS II patients. This study shows that sympathetic-nociceptor interactions, if they exist in patients communicating chronic neuropathic pain, must be the exception.
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影响因子:
2.5
作者:
HABLER, HJ;JANIG, W;KOLTZENBURG, M
通讯作者:
KOLTZENBURG, M
影响因子:
7.4
作者:
Mailis-Gagnon, A;Bennett, GJ
通讯作者:
Bennett, GJ
影响因子:
7.4
作者:
Ali, Z;Raja, SN;Campbell, JN
通讯作者:
Campbell, JN
DOI:
10.1111/j.1365-201x.2004.01357.x
发表时间:
2004-11-01
期刊:
ACTA PHYSIOLOGICA SCANDINAVICA
影响因子:
--
作者:
Campero, M;Serra, J;Ochoa, JL
通讯作者:
Ochoa, JL
影响因子:
1
作者:
Elam, M
通讯作者:
Elam, M