Abstract:
:The medial prefrontal cortex (mPFC) is critical for selecting and shaping complex behavioral responses. In rodent models of neuropathic pain there is evidence for both structural and functional changes in the mPFC. Brain derived neurotrophic factor (BDNF) plays a critical role in the normal functioning of the mPFC. It has been suggested that the disruption of complex behaviors and mood seen in some neuropathic pain patients is mediated in part by alterations of BDNF in this cortical region. In Sprague-Dawley rats, mPFC levels of BDNF and TrkB mRNA and protein, were quantified and compared to controls (n = 24) 6 days after either: (a) halothane (1.5%) anaesthesia (n = 12), (b) sham surgery under halothane (n = 12), (c) sciatic nerve chronic constriction injury under halothane (n = 48). The social behaviors of the rats were quantified daily during the experimental period. Halothane anaesthesia increased BDNF and TrkB mRNA bilaterally. These increases were reversed in rats that underwent sham surgical and nerve injury procedures. Further, halothane anaesthesia, surgical procedures, and nerve injury each decreased BDNF protein levels. These results reveal a marked and distinct BDNF expression profile in the mPFC of rats that have undergone each stage of the procedure to produce neuropathic pain by chronic constriction injury of the sciatic nerve. The highly sensitive nature of neurotrophic signalling to general anaesthesia in the mature neuronal circuit of the adult rat brain highlights the importance of careful evaluation and interpretation of data evaluating the effects of experimental procedures on neural substrates.
journal_name
J Neurosci Resjournal_title
Journal of neuroscience researchauthors
Kang JWM,Keay KA,Mor Ddoi
10.1002/jnr.24095subject
Has Abstractpub_date
2017-12-01 00:00:00pages
2376-2390issue
12eissn
0360-4012issn
1097-4547journal_volume
95pub_type
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