Microencapsulated olfactory ensheathing cell transplantation reduces P2X4 receptor overexpression and inhibits neuropathic pain in rats
| Autor: | Wen-jun Zhang, Yi Sun, Zeng-xu Liu, Yuguo Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Male medicine.medical_specialty Cell Transplantation Receptor expression Cell Culture Techniques Rats Sprague-Dawley 03 medical and health sciences 0302 clinical medicine Internal medicine Medicine Animals Receptor Molecular Biology Spinal Cord Injuries business.industry General Neuroscience Sciatic nerve injury medicine.disease Olfactory Bulb Olfactory bulb Nerve Regeneration Rats Transplantation 030104 developmental biology Endocrinology Gene Expression Regulation Spinal Cord Neuropathic pain Neuralgia Female Neurology (clinical) Sciatic nerve Olfactory ensheathing glia business Receptors Purinergic P2X4 030217 neurology & neurosurgery Developmental Biology |
| Zdroj: | Brain research. 1724 |
| ISSN: | 1872-6240 |
| Popis: | Objectives The aim of this study was to determine the role of microencapsulated olfactory ensheathing cells (MC-OECs) transplantation in rats with sciatic nerve injury-induced neuropathic pain, and its relationship with P2X4 receptor expression in the L4-5 spinal cord segment. Methods Olfactory bulb tissues of healthy Sprague Dawley (SD) rats were collected to culture olfactory ensheathing cells (OECs) using differential attachment methods. Seventy-two healthy SD rats were randomly assigned to four groups: the sham, chronic constriction injury (CCI), OECs, and MC-OECs groups. Mechanical paw withdrawal thresholds were measured on days 7, 14 and 21 after surgery. The expression of P2X4 receptor genes in the L4-5 spinal cord segment was detected by in situ hybridization, western blotting and RT-PCR. Results On post-surgical days 7, 14 and 21. The mechanical paw withdrawal thresholds of rats from low to high were the CCI, OECs, MC-OECs and sham groups. The expression level of P2X4 receptor mRNA and protein from low to high were the sham, MC-OECs, OECs and CCI groups. Compared with the OECs group, the mechanical paw withdrawal thresholds of rats were increased, and the expression level of P2X4 receptor mRNA and protein were decreased in the MC-OECs group. In addition, the mechanical paw withdrawal thresholds of rats were higher and the expression level of P2X4 receptor were lower in the MC-OECs group on post-surgical days 21 than that on days 7 and 14. All differences between groups were statistically significant (P value Conclusions OECs and MC-OECs transplantation can reduce the expression level of P2X4 receptor and relieve pain. The therapeutic efficacy was better in the MC-OECs group than in the OECs group. MC-OECs transplantation have the better effects of treatment with the increase of MC-OECs transplantation time. |
| Databáze: | OpenAIRE |
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