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Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing

BACKGROUND: 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 t...

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Autores principales: Guo, Ning, Gu, Xiyao, Zhao, Jun, Zhao, Guoping, Jin, Meilei, Zou, Hong, Zhang, Yuqiu, Zhao, Zhiqi, Jin, Gang Jason, Yu, Lei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3554490/
https://www.ncbi.nlm.nih.gov/pubmed/23234480
http://dx.doi.org/10.1186/1471-2202-13-150
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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 PubMed
description BACKGROUND: 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. RESULTS: We describe here a nerve injury model of maxillary nerve compression (MNC) in the cynomolgus macaque monkey, Macaca fascicularis, 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. CONCLUSIONS: 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.
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spelling pubmed-35544902013-01-29 Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing Guo, Ning Gu, Xiyao Zhao, Jun Zhao, Guoping Jin, Meilei Zou, Hong Zhang, Yuqiu Zhao, Zhiqi Jin, Gang Jason Yu, Lei BMC Neurosci Research Article BACKGROUND: 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. RESULTS: We describe here a nerve injury model of maxillary nerve compression (MNC) in the cynomolgus macaque monkey, Macaca fascicularis, 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. CONCLUSIONS: 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. BioMed Central 2012-12-13 /pmc/articles/PMC3554490/ /pubmed/23234480 http://dx.doi.org/10.1186/1471-2202-13-150 Text en Copyright ©2012 Guo et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
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 Macaca fascicularis: altered somatic sensation and peripheral nerve firing
title Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing
title_full Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing
title_fullStr Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing
title_full_unstemmed Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing
title_short Maxillary nerve compression in cynomolgus monkey Macaca fascicularis: altered somatic sensation and peripheral nerve firing
title_sort maxillary nerve compression in cynomolgus monkey macaca fascicularis: altered somatic sensation and peripheral nerve firing
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3554490/
https://www.ncbi.nlm.nih.gov/pubmed/23234480
http://dx.doi.org/10.1186/1471-2202-13-150
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