Abstract：
:The transcription factor cAMP responsive element binding protein (CREB) is important in regulating immediate-early genes and some late-effector genes involved in neuroplasticity in response to peripheral injury and stressful insults. Partial nerve injury elicited neuropathic pain is accompanied by increased phosphorylation of CREB in the ipsilateral spinal cord dorsal horn (Ma and Quirion, Pain 93 (2001) 295; Miletic et al., Pain 99 (2002) 493). The aim of this study is to determine whether increased phosphorylation of CREB in the dorsal horn contributes to the pathogenesis of neuropathic pain. Three weeks following partial sciatic nerve ligation (PSNL), daily intrathecal injection of antisense CREB oligodeoxynucleotide (ODN, 20 microg/day) for 5 days significantly attenuated tactile allodynia. The attenuation lasted for more than 4 days. Total CREB and phosphorylated CREB in both ipsilateral and contralateral dorsal horn neurons were dramatically reduced in antisense ODN injected PSNL rats 1 week after injection. The extent of reduction of total CREB and phosphorylated CREB containing cells in the dorsal horn ipsilateral to injury was greater than in the contralateral dorsal horn. These data suggest that phosphorylation of CREB is an important contributing event in the central plasticity of nerve injury and in the pathogenesis of neuropathic pain.
journal_name
Brain Resjournal_title
Brain researchauthors
Ma W,Hatzis C,Eisenach JCdoi
10.1016/s0006-8993(03)03348-1subject
Has Abstractpub_date
2003-10-24 00:00:00pages
97-104issue
1-2eissn
0006-8993issn
1872-6240pii
S0006899303033481journal_volume
988pub_type
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