PMID- 29523370 OWN - NLM STAT- MEDLINE DCOM- 20200422 LR - 20240201 IS - 1879-1271 (Electronic) IS - 0268-0033 (Print) IS - 0268-0033 (Linking) VI - 64 DP - 2019 Apr TI - Physiologic facet capsule stretch can induce pain & upregulate matrix metalloproteinase-3 in the dorsal root ganglia when preceded by a physiological mechanical or nonpainful chemical exposure. PG - 122-130 LID - S0268-0033(18)30028-7 [pii] LID - 10.1016/j.clinbiomech.2018.01.009 [doi] AB - BACKGROUND: Neck pain from cervical facet loading is common and induces inflammation and upregulation of nerve growth factor (NGF) that can sensitize the joint afferents. Yet, the mechanisms by which these occur and whether afferents can be pre-conditioned by certain nonpainful stimuli are unknown. This study tested the hypothesis that a nonpainful mechanical or chemical insult predisposes a facet joint to generate pain after a later exposure to typically nonpainful distraction. METHODS: Rats were exposed to either a nonpainful distraction or an intra-articular subthreshold dose of NGF followed by a nonpainful distraction two days later. Mechanical hyperalgesia was measured daily and C6 dorsal root ganglia (DRG) tissue was assayed for NGF and matrix metalloproteinase-3 (MMP-3) expression on day 7. FINDINGS: The second distraction increased joint displacement and strains compared to its first application (p = 0.0011). None of the initial exposures altered behavioral sensitivity in either of the groups being pre-conditioned or in controls; but, sensitivity was established in both groups receiving a second distraction within one day that lasted until day 7 (p < 0.024). NGF expression in the DRG was increased in both groups undergoing a pre-conditioning exposure (p < 0.0232). Similar findings were observed for MMP-3 expression, with a pre-conditioning exposure increasing levels after an otherwise nonpainful facet distraction. INTERPRETATION: These findings suggest that nonpainful insults to the facet joint, when combined, can generate painful outcomes, possibly mediated by upregulation of MMP-3 and mature NGF. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Singh, Sagar AU - Singh S AD - Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA. FAU - Kartha, Sonia AU - Kartha S AD - Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA. FAU - Bulka, Ben A AU - Bulka BA AD - Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA. FAU - Stiansen, Nicholas S AU - Stiansen NS AD - Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA. FAU - Winkelstein, Beth A AU - Winkelstein BA AD - Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA; Department of Neurosurgery, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA. Electronic address: winkelst@seas.upenn.edu. LA - eng GR - R01 AR056288/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20180131 PL - England TA - Clin Biomech (Bristol, Avon) JT - Clinical biomechanics (Bristol, Avon) JID - 8611877 RN - 0 (Ngf protein, rat) RN - 9061-61-4 (Nerve Growth Factor) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Animals MH - Behavior, Animal MH - Ganglia, Spinal/*metabolism MH - Gene Expression Regulation, Enzymologic MH - Hyperalgesia/metabolism/*physiopathology MH - Male MH - Matrix Metalloproteinase 3/*metabolism MH - Nerve Growth Factor/*metabolism MH - Pain MH - Pain Measurement MH - Rats MH - Rats, Sprague-Dawley MH - Up-Regulation MH - Zygapophyseal Joint/physiopathology PMC - PMC6067996 MID - NIHMS948838 OTO - NOTNLM OT - Biomechanics OT - Facet joint OT - Injury OT - Matrix metalloproteinase OT - Neck pain OT - Nerve growth factor COIS- Conflicts of Interest: The authors have no financial relationships to disclose. EDAT- 2018/03/11 06:00 MHDA- 2020/04/23 06:00 PMCR- 2020/04/01 CRDT- 2018/03/11 06:00 PHST- 2017/09/12 00:00 [received] PHST- 2017/12/22 00:00 [revised] PHST- 2018/01/15 00:00 [accepted] PHST- 2018/03/11 06:00 [pubmed] PHST- 2020/04/23 06:00 [medline] PHST- 2018/03/11 06:00 [entrez] PHST- 2020/04/01 00:00 [pmc-release] AID - S0268-0033(18)30028-7 [pii] AID - 10.1016/j.clinbiomech.2018.01.009 [doi] PST - ppublish SO - Clin Biomech (Bristol, Avon). 2019 Apr;64:122-130. doi: 10.1016/j.clinbiomech.2018.01.009. Epub 2018 Jan 31.