Mechanism for chronic pain generation |
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Authors: | Yikuan Xie |
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Institution: | (1) Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, 100005 Beijing, China |
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Abstract: | Neuropathic pain and the other abnormalities of sensation induced by axon injury or by peripheral nerve inflammation should
result from functional compensations of the injured neurons during their regeneration. Ectopic distribution of proteins related
to Na+, K+ and Ca2+ channels as well as of receptors on both membranes of injured axon and its cell body becomes a main pacemaker from which
spontaneous ectopic afferent of primary sensatory neurons and crosstalk between neurons occur. Abnormal ectopic afferent activities
lead to disorders of the sensation, such as hyperalgesia, allodynia, spontaneous pain and paraesthesia. Administration of
some ion channel agents and/or α2-adrenergic blockers has shown efficiency in preventing neuropathic pain development and
in relieving neuropathic pain. |
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Keywords: | chronic pain nerve injury ectopic firing ion channels sympathetic activity |
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