PMID- 24650225 OWN - NLM STAT- MEDLINE DCOM- 20150413 LR - 20211021 IS - 1582-4934 (Electronic) IS - 1582-1838 (Print) IS - 1582-1838 (Linking) VI - 18 IP - 6 DP - 2014 Jun TI - Painful, degenerating intervertebral discs up-regulate neurite sprouting and CGRP through nociceptive factors. PG - 1213-25 LID - 10.1111/jcmm.12268 [doi] AB - Intervertebral disc degeneration (IVD) can result in chronic low back pain, a common cause of morbidity and disability. Inflammation has been associated with IVD degeneration, however the relationship between inflammatory factors and chronic low back pain remains unclear. Furthermore, increased levels of nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF) are both associated with inflammation and chronic low back pain, but whether degenerating discs release sufficient concentrations of factors that induce nociceptor plasticity remains unclear. Degenerating IVDs from low back pain patients and healthy, painless IVDs from human organ donors were cultured ex vivo. Inflammatory and nociceptive factors released by IVDs into culture media were quantified by enzyme-linked immunosorbent assays and protein arrays. The ability of factors released to induce neurite growth and nociceptive neuropeptide production was investigated. Degenerating discs release increased levels of tumour necrosis factor-alpha, interleukin-1beta, NGF and BDNF. Factors released by degenerating IVDs increased neurite growth and calcitonin gene-related peptide expression, both of which were blocked by anti-NGF treatment. Furthermore, protein arrays found increased levels of 20 inflammatory factors, many of which have nociceptive effects. Our results demonstrate that degenerating and painful human IVDs release increased levels of NGF, inflammatory and nociceptive factors ex vivo that induce neuronal plasticity and may actively diffuse to induce neo-innervation and pain in vivo. CI - (c) 2014 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine. FAU - Krock, Emerson AU - Krock E AD - Orthopeadic Research Laboratory, Division of Orthopedic Surgery, McGill University, Montreal, QC, Canada; McGill Scoliosis and Spine Research Group, Montreal, QC, Canada. FAU - Rosenzweig, Derek H AU - Rosenzweig DH FAU - Chabot-Dore, Anne-Julie AU - Chabot-Dore AJ FAU - Jarzem, Peter AU - Jarzem P FAU - Weber, Michael H AU - Weber MH FAU - Ouellet, Jean A AU - Ouellet JA FAU - Stone, Laura S AU - Stone LS FAU - Haglund, Lisbet AU - Haglund L LA - eng GR - MOP-119564/Canadian Institutes of Health Research/Canada GR - MOP-86691/Canadian Institutes of Health Research/Canada PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140320 PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Culture Media, Conditioned) RN - 0 (Interleukin-1beta) RN - 0 (Nerve Growth Factors) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - JHB2QIZ69Z (Calcitonin Gene-Related Peptide) SB - IM MH - Adult MH - Animals MH - Apoptosis MH - Blotting, Western MH - Brain-Derived Neurotrophic Factor/genetics/metabolism MH - Calcitonin Gene-Related Peptide/genetics/*metabolism MH - Case-Control Studies MH - Cell Proliferation MH - Cells, Cultured MH - Culture Media, Conditioned/pharmacology MH - Female MH - Humans MH - Interleukin-1beta/genetics/metabolism MH - Intervertebral Disc Degeneration/complications/*physiopathology MH - Low Back Pain/*etiology/metabolism/*pathology MH - Male MH - Mice MH - Middle Aged MH - Nerve Growth Factors/genetics/metabolism MH - Neurites/metabolism/*pathology MH - Neurons/metabolism/*pathology MH - Nociception/*physiology MH - PC12 Cells MH - RNA, Messenger/genetics MH - Rats MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tumor Necrosis Factor-alpha/genetics/metabolism MH - Young Adult PMC - PMC4508160 OTO - NOTNLM OT - CGRP OT - discogenic pain OT - human OT - inflammatory cytokines OT - intervertebral disc degeneration OT - nerve growth factor EDAT- 2014/03/22 06:00 MHDA- 2015/04/14 06:00 PMCR- 2014/06/01 CRDT- 2014/03/22 06:00 PHST- 2013/12/18 00:00 [received] PHST- 2014/01/29 00:00 [accepted] PHST- 2014/03/22 06:00 [entrez] PHST- 2014/03/22 06:00 [pubmed] PHST- 2015/04/14 06:00 [medline] PHST- 2014/06/01 00:00 [pmc-release] AID - 10.1111/jcmm.12268 [doi] PST - ppublish SO - J Cell Mol Med. 2014 Jun;18(6):1213-25. doi: 10.1111/jcmm.12268. Epub 2014 Mar 20.