Induction of connexin 37 expression in a rat model of neuropathic pain

S. H. Lin, C. Y. Lu, R. Muhammad, Wen-Ying Chou, F. C. Lin, Ping-Ching Wu, C. R. Lin, L. C. Yang

研究成果: Article

15 引文 (Scopus)

摘要

Activation of cutaneous C-fibers by capsaicin or sciatic nerve transection increases the number of astrocytic gap junctions as well as the levels of connexin 43 in the dorsal horn on the stimulated side. Changes in connexin 37 mRNA expression following nerve injury have not been previously documented. We examined the role of gap junction protein connexin 37 in neuropathic hypersensitivity following peripheral nerve injury. Study results showed ipsilaterally increased connexin 37 mRNA levels proximally and distally in rat sciatic nerves after injury and behavioral thermal hyperalgesia at 7 and 14 days. Proximal and distal connexin 37 mRNA levels returned to baseline by 21 days. Sciatic nerve connexin 37 mRNA increases were proportional to the extent of thermal hyperalgesia, but skin, muscle, and lumbar spinal cord connexin 37 mRNA showed no significant changes. Neuropathic pain relief correlated with downregulation of connexin 37 mRNA. Results indicate that upregulation of connexin 37 mRNA following sciatic nerve injury correlates with subsequent thermal hyperalgesia, which suggests that gap junctions (connexin 37) are responsible for the hyperexcitability following peripheral nerve injury.

原文English
頁(從 - 到)134-140
頁數7
期刊Molecular Brain Research
99
發行號2
DOIs
出版狀態Published - 2002 三月 28

指紋

Neuralgia
Messenger RNA
Sciatic Nerve
Hyperalgesia
Peripheral Nerve Injuries
Gap Junctions
Spinal Cord
Wounds and Injuries
connexin 37
Unmyelinated Nerve Fibers
Skin
Connexin 43
Connexins
Capsaicin
Hypersensitivity
Up-Regulation
Down-Regulation
Muscles

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Cellular and Molecular Neuroscience

引用此文

Lin, S. H. ; Lu, C. Y. ; Muhammad, R. ; Chou, Wen-Ying ; Lin, F. C. ; Wu, Ping-Ching ; Lin, C. R. ; Yang, L. C. / Induction of connexin 37 expression in a rat model of neuropathic pain. 於: Molecular Brain Research. 2002 ; 卷 99, 編號 2. 頁 134-140.
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Induction of connexin 37 expression in a rat model of neuropathic pain. / Lin, S. H.; Lu, C. Y.; Muhammad, R.; Chou, Wen-Ying; Lin, F. C.; Wu, Ping-Ching; Lin, C. R.; Yang, L. C.

於: Molecular Brain Research, 卷 99, 編號 2, 28.03.2002, p. 134-140.

研究成果: Article

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N2 - Activation of cutaneous C-fibers by capsaicin or sciatic nerve transection increases the number of astrocytic gap junctions as well as the levels of connexin 43 in the dorsal horn on the stimulated side. Changes in connexin 37 mRNA expression following nerve injury have not been previously documented. We examined the role of gap junction protein connexin 37 in neuropathic hypersensitivity following peripheral nerve injury. Study results showed ipsilaterally increased connexin 37 mRNA levels proximally and distally in rat sciatic nerves after injury and behavioral thermal hyperalgesia at 7 and 14 days. Proximal and distal connexin 37 mRNA levels returned to baseline by 21 days. Sciatic nerve connexin 37 mRNA increases were proportional to the extent of thermal hyperalgesia, but skin, muscle, and lumbar spinal cord connexin 37 mRNA showed no significant changes. Neuropathic pain relief correlated with downregulation of connexin 37 mRNA. Results indicate that upregulation of connexin 37 mRNA following sciatic nerve injury correlates with subsequent thermal hyperalgesia, which suggests that gap junctions (connexin 37) are responsible for the hyperexcitability following peripheral nerve injury.

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