PMID- 24612023 OWN - NLM STAT- MEDLINE DCOM- 20150106 LR - 20140519 IS - 1460-9568 (Electronic) IS - 0953-816X (Linking) VI - 39 IP - 10 DP - 2014 May TI - Intrathecal miR-183 delivery suppresses mechanical allodynia in mononeuropathic rats. PG - 1682-9 LID - 10.1111/ejn.12522 [doi] AB - Members of the miR-183 family are unique in that they are highly abundant in sensory organs. In a recent study, significant downregulation was observed for miR-96 and miR-183 in the L5 dorsal root ganglion (DRG) 2 weeks after spinal nerve ligation (SNL). In this study, we focused on miR-183, which is the most regulated member of the miR-183 family, to look at the specific role on neuropathic pain. Persistent mechanical allodynia was induced with the L5 SNL model in 8-week-old male Sprague-Dawley rats. Paw withdrawal thresholds in response to mechanical stimuli were assessed with Von Frey filaments. Expression of miR-183 in the L5 DRG was assessed with quantitative real-time polymerase chain reaction (qPCR) analysis. Lentivirions expressing miR-183 were injected intrathecally into SNL rats. Changes in mechanical allodynia were assessed with Von Frey filaments. In addition, changes in the predicted target genes of miR-183 were assessed with qPCR. L5 SNL produced marked mechanical allodynia in the ipsilateral hindpaws of adult rats, beginning at postoperative day 1 and continuing to day 14. L5 SNL caused significant downregulation of miR-183 in adult DRG cells. Intrathecal administration of lentivirions expressing miR-183 downregulated SNL-induced increases in the expression of Nav1.3 and brain-derived neurotrophic factor (BDNF), which correlated with the significant attenuation of SNL-induced mechanical allodynia. Our results show that SNL-induced mechanical allodynia is significantly correlated with the decreased expression of miR-183 in DRG cells. Replacement of miR-183 downregulates SNL-induced increases in Nav1.3 and BDNF expression, and attenuates SNL-induced mechanical allodynia. CI - (c) 2014 Federation of European Neuroscience Societies and John Wiley & Sons Ltd. FAU - Lin, Chung-Ren AU - Lin CR AD - Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, No. 123 Dapi Rd, Kaohsiung, 833, Taiwan; Department of Anesthesiology, National Taiwan University College of Medicine, Taipei, Taiwan. FAU - Chen, Kuan-Hung AU - Chen KH FAU - Yang, Chien-Hui AU - Yang CH FAU - Huang, Hui-Wen AU - Huang HW FAU - Sheen-Chen, Shyr-Ming AU - Sheen-Chen SM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140311 PL - France TA - Eur J Neurosci JT - The European journal of neuroscience JID - 8918110 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (MIRN183 microRNA, rat) RN - 0 (MicroRNAs) RN - 0 (NAV1.3 Voltage-Gated Sodium Channel) RN - 0 (Scn3a protein, rat) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/metabolism MH - Disease Models, Animal MH - Down-Regulation MH - Ganglia, Spinal/*physiopathology MH - Gene Transfer Techniques MH - Genetic Vectors MH - Hyperalgesia/*physiopathology MH - Lentivirus/genetics MH - Male MH - MicroRNAs/genetics/*metabolism MH - NAV1.3 Voltage-Gated Sodium Channel/metabolism MH - Neuralgia/physiopathology MH - Pain Threshold/physiology MH - Physical Stimulation MH - Rats, Sprague-Dawley MH - Real-Time Polymerase Chain Reaction MH - Spinal Nerves/injuries MH - Touch OTO - NOTNLM OT - intrathecal delivery OT - lentivirions OT - neuropathic pain OT - spinal nerve ligation EDAT- 2014/03/13 06:00 MHDA- 2015/01/07 06:00 CRDT- 2014/03/12 06:00 PHST- 2013/09/26 00:00 [received] PHST- 2014/01/08 00:00 [revised] PHST- 2014/01/27 00:00 [accepted] PHST- 2014/03/12 06:00 [entrez] PHST- 2014/03/13 06:00 [pubmed] PHST- 2015/01/07 06:00 [medline] AID - 10.1111/ejn.12522 [doi] PST - ppublish SO - Eur J Neurosci. 2014 May;39(10):1682-9. doi: 10.1111/ejn.12522. Epub 2014 Mar 11.