Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing
<p>Abstract</p> <p>Background</p> <p>Trigeminal nerve is a major source of the sensory input of the face, and trigeminal neuropathology models have been reported in rodents with injury to branches of the maxillary or mandibular division of the trigeminal nerve. Non-huma...
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| Format: | Article |
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BMC
2012-12-01
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| Series: | BMC Neuroscience |
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| Online Access: | http://www.biomedcentral.com/1471-2202/13/150 |
| _version_ | 1819053464153489408 |
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| author | Guo Ning Gu Xiyao Zhao Jun Zhao Guoping Jin Meilei Zou Hong Zhang Yuqiu Zhao Zhiqi Jin Gang Jason Yu Lei |
| author_facet | Guo Ning Gu Xiyao Zhao Jun Zhao Guoping Jin Meilei Zou Hong Zhang Yuqiu Zhao Zhiqi Jin Gang Jason Yu Lei |
| author_sort | Guo Ning |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Trigeminal nerve is a major source of the sensory input of the face, and trigeminal neuropathology models have been reported in rodents with injury to branches of the maxillary or mandibular division of the trigeminal nerve. Non-human primates are neuroanatomically more closely related to human than rodents; however, nerve injury studies in non-human primates are limited.</p> <p>Results</p> <p>We describe here a nerve injury model of maxillary nerve compression (MNC) in the cynomolgus macaque monkey, <it>Macaca fascicularis</it>, and the initial characterization of the consequences of damage to this trigeminal nerve branch. The nerve injury from the compression appeared to be mild, as we did not observe overt changes in home-cage behavior in the monkeys. When mechanical stimulation was applied to the facial area, monkeys with MNC displayed increased mechanical sensitivity, as the avoidance response scores were lower than those from the control animals. Such a change in mechanical sensitivity appeared to be somewhat bilateral, as the contralateral side also showed increased mechanical sensitivity, although the change on the ipsilateral side was more robust. Multiple-unit recording of the maxillary nerve showed a general pattern of increasing responsiveness to escalating force in mechanical stimulation on the contralateral side. Ipsilateral side of the maxillary nerve showed a lack of responsiveness to escalating force in mechanical stimulation, possibly reflecting a maximum stimulation threshold effect from sensitized nerve due to MNC injury.</p> <p>Conclusions</p> <p>These results suggest that MNC may produce increased sensitivity of the ipsilateral maxillary nerve, and that this model may serve as a non-human primate model to evaluate the effect of injury to trigeminal nerve branches.</p> |
| first_indexed | 2024-12-21T12:36:08Z |
| format | Article |
| id | doaj.art-2780f464cf4048c4ab0b2a7d7cb9a86d |
| institution | Directory Open Access Journal |
| issn | 1471-2202 |
| language | English |
| last_indexed | 2024-12-21T12:36:08Z |
| publishDate | 2012-12-01 |
| publisher | BMC |
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| series | BMC Neuroscience |
| spelling | doaj.art-2780f464cf4048c4ab0b2a7d7cb9a86d2022-12-21T19:03:54ZengBMCBMC Neuroscience1471-22022012-12-0113115010.1186/1471-2202-13-150Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firingGuo NingGu XiyaoZhao JunZhao GuopingJin MeileiZou HongZhang YuqiuZhao ZhiqiJin Gang JasonYu Lei<p>Abstract</p> <p>Background</p> <p>Trigeminal nerve is a major source of the sensory input of the face, and trigeminal neuropathology models have been reported in rodents with injury to branches of the maxillary or mandibular division of the trigeminal nerve. Non-human primates are neuroanatomically more closely related to human than rodents; however, nerve injury studies in non-human primates are limited.</p> <p>Results</p> <p>We describe here a nerve injury model of maxillary nerve compression (MNC) in the cynomolgus macaque monkey, <it>Macaca fascicularis</it>, and the initial characterization of the consequences of damage to this trigeminal nerve branch. The nerve injury from the compression appeared to be mild, as we did not observe overt changes in home-cage behavior in the monkeys. When mechanical stimulation was applied to the facial area, monkeys with MNC displayed increased mechanical sensitivity, as the avoidance response scores were lower than those from the control animals. Such a change in mechanical sensitivity appeared to be somewhat bilateral, as the contralateral side also showed increased mechanical sensitivity, although the change on the ipsilateral side was more robust. Multiple-unit recording of the maxillary nerve showed a general pattern of increasing responsiveness to escalating force in mechanical stimulation on the contralateral side. Ipsilateral side of the maxillary nerve showed a lack of responsiveness to escalating force in mechanical stimulation, possibly reflecting a maximum stimulation threshold effect from sensitized nerve due to MNC injury.</p> <p>Conclusions</p> <p>These results suggest that MNC may produce increased sensitivity of the ipsilateral maxillary nerve, and that this model may serve as a non-human primate model to evaluate the effect of injury to trigeminal nerve branches.</p>http://www.biomedcentral.com/1471-2202/13/150Maxillary nerveTrigeminal nerveCompressionMultiple-unit recordingNon-human primates |
| spellingShingle | Guo Ning Gu Xiyao Zhao Jun Zhao Guoping Jin Meilei Zou Hong Zhang Yuqiu Zhao Zhiqi Jin Gang Jason Yu Lei Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing BMC Neuroscience Maxillary nerve Trigeminal nerve Compression Multiple-unit recording Non-human primates |
| title | Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing |
| title_full | Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing |
| title_fullStr | Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing |
| title_full_unstemmed | Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing |
| title_short | Maxillary nerve compression in cynomolgus monkey <it>Macaca fascicularis</it>: altered somatic sensation and peripheral nerve firing |
| title_sort | maxillary nerve compression in cynomolgus monkey it macaca fascicularis it altered somatic sensation and peripheral nerve firing |
| topic | Maxillary nerve Trigeminal nerve Compression Multiple-unit recording Non-human primates |
| url | http://www.biomedcentral.com/1471-2202/13/150 |
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