Journal
AUTONOMIC NEUROSCIENCE-BASIC & CLINICAL
Volume 186, Issue -, Pages 91-94Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.autneu.2014.08.004
Keywords
Acupuncture analgesia; Nucleus tractus solitarius (NTS); Colorectal distension (CRD)
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Funding
- National Natural Science Foundation of China [81130063, 81173345]
- National Basic Research Program [2011CB505201]
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The study investigated the role of nucleus tractus solitarius (NTS) neurons in electroacupuncture (EA) analgesia in colorectal distension (CRD) rats. NTS neurons responding to both CRD test and EA conditioning stimulations were considered somato-visceral convergent neurons. The neuronal activities evoked by graded CRD showed multiple firing patterns indicating multisynaptic connections. Some of the CRD excitatory neurons were inhibited by EA and vice versa. There was no discrepancy among different acupoints in inducing the changes of unit discharges. Conclusively, EA could regulate CRD related neurons in the NTS through polysynaptic cross-talk mechnism, which mediates EA analgesia on visceral pain in anesthetized rats. (C) 2014 Elsevier B.V. All rights reserved.
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