Neural mobilization promotes nerve regeneration by nerve growth factor and myelin protein zero increased after sciatic nerve injury

Joyce Teixeira da SilvaDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,

Fabio Martinez dos SantosDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil, ;Department of Health Sciences, University Nove de Julho, São Paulo, Brazil,

Aline Caroline GiardiniDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,

Daniel de Oliveira MartinsDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,

Mara Evany de OliveiraDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,

Adriano Polican CienaDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,

Vanessa Pacciari GutierrezSpecial Laboratory of Pain and Signaling, Butantan Institute, University of São Paulo, São Paulo, Brazil, and

Ii-sei WatanabeDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,

Luiz Roberto G. de BrittoDepartment of Physiology and Biophysics, Laboratory of Cellular Neurobiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil

Marucia ChacurDepartment of Anatomy, Laboratory of Functional Neuroanatomy of Pain, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil, Correspondence[email protected]

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Abstract

Neurotrophins are crucial in relation to axonal regrowth and remyelination following injury; and neural mobilization (NM) is a noninvasive therapy that clinically is effective in neuropathic pain treatment, but its mechanisms remains unclear. We examined the effects of NM on the regeneration of sciatic nerve after chronic constriction injury (CCI) in rats. The CCI was performed on adult male rats, submitted to 10 sessions of NM, starting 14 days after CCI. Then, the nerves were analyzed using transmission electron microscopy and western blot for neural growth factor (NGF) and myelin protein zero (MPZ). We observed an increase of NGF and MPZ after CCI and NM. Electron microscopy revealed that CCI-NM samples had high numbers of axons possessing myelin sheaths of normal thickness and less inter-axonal fibrosis than the CCI. These data suggest that NM is effective in facilitating nerve regeneration and NGF and MPZ are involved in this effect.

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Declaration of interest

No competing financial interests exist.

This study was supported by FAPESP (2011/22268-0), CNPq, CAPES (Brazil).

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Neural mobilization promotes nerve regeneration by nerve growth factor and myelin protein zero increased after sciatic nerve injury

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Neural mobilization promotes nerve regeneration by nerve growth factor and myelin protein zero increased after sciatic nerve injury

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