ArticleSpine2013
An anatomical and immunohistochemical characterization of afferents innervating the C6-C7 facet joint after painful joint loading in the rat.
Article in Spine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04542798 (Central Sensitization and Aberrant Nerve Sprouting Possible Explanations for RFA Failure of MBDR in CLBP of FJ Origin), which is not on this map. Cited by 15 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Central Sensitization and Aberrant Nerve Sprouting Possible Explanations for RFA Failure of MBDR in CLBP of FJ Origin: CRF Versus WCRF or PRF-DRG Randomized Clinical Trial
Who cites it
15 citing papers in PubMed, 25 citations in OpenAlex.
- Subfailure capsule strain as the cause of cervical zygapophysial joint pain after whiplash: a scoping review.Pain medicine (Malden, Mass.) · 2026Article
- Changes of Trigeminal Ganglion Neurons Innervating the Temporomandibular Joint in Chronic Pain Rat Model.International journal of dentistry · 2024Article
- Analysis of Correlation Between Age and Cervical Facet Joint Degeneration and Modic Changes in Patients with Cervical Spondylotic Myelopathy.Medical science monitor : international medical journal of experimental and clinical research · 2019Article
- 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.Clinical biomechanics (Bristol, Avon) · 2019Article
- Comparative Analysis of Bone Structural Parameters Reveals Subchondral Cortical Plate Resorption and Increased Trabecular Bone Remodeling in Human Facet Joint Osteoarthritis.International journal of molecular sciences · 2018Article
- Collagen organization regulates stretch-initiated pain-related neuronal signals in vitro: Implications for structure-function relationships in innervated ligaments.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2018Article
- A Nociceptive Role for Integrin Signaling in Pain After Mechanical Injury to the Spinal Facet Capsular Ligament.Annals of biomedical engineering · 2017Article
- Ablation of IB4 non-peptidergic afferents in the rat facet joint prevents injury-induced pain and thalamic hyperexcitability via supraspinal glutamate transporters.Neuroscience letters · 2017Article
- Effect of electroacupuncture on thermal pain threshold and expression of calcitonin-gene related peptide, substance P and γ-aminobutyric acid in the cervical dorsal root ganglion of rats with incisional neck pain.Acupuncture in medicine : journal of the British Medical Acupuncture Society · 2017Article
- The Interface of Mechanics and Nociception in Joint Pathophysiology: Insights From the Facet and Temporomandibular Joints.Journal of biomechanical engineering · 2017Review
- Tissue Strain Reorganizes Collagen With a Switchlike Response That Regulates Neuronal Extracellular Signal-Regulated Kinase Phosphorylation In Vitro: Implications for Ligamentous Injury and Mechanotransduction.Journal of biomechanical engineering · 2016Article
- Intra-articular nerve growth factor regulates development, but not maintenance, of injury-induced facet joint pain & spinal neuronal hypersensitivity.Osteoarthritis and cartilage · 2015Article
- Pain from intra-articular NGF or joint injury in the rat requires contributions from peptidergic joint afferents.Neuroscience letters · 2015Article
- Article
- Ablating spinal NK1-bearing neurons eliminates the development of pain and reduces spinal neuronal hyperexcitability and inflammation from mechanical joint injury in the rat.The journal of pain · 2014Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
STUDY
designThis study used retrograde neuronal tracing and immunohistochemistry to identify neurons innervating the C6-C7 facet joint and those expressing calcitonin gene-related peptide (CGRP) in the dorsal root ganglion (DRG) of rats after painful cervical facet joint injury.
objectiveThe objective of this study was to characterize the innervation of the C6-C7 facet joint after painful joint injury in the rat. SUMMARY OF BACKGROUND DATA: The cervical facet joint is a source of neck pain, and its loading can initiate persistent pain. CGRP is a nociceptive neurotransmitter; peptidergic afferents have been identified in the facet joint's capsule. Although studies suggest that facet joint injury alters CGRP expression in joint afferents, the distribution of neurons innervating the C6-C7 facet joint and their expression of CGRP after a painful joint injury have not been investigated.
methodsHoltzman rats (Harlan Sprague-Dawley, Indianapolis, IN) received an intra-articular injection of cholera toxin subunit B in the C6-C7 facet joints. After injection, subgroups underwent either a painful joint distraction or sham procedure. Mechanical sensitivity was assessed, and immunohistochemical techniques were used to quantify CGRP expression and cholera toxin subunit B labeling in the C5-C8 DRGs.
resultsFacet joint distraction-induced (P ≤ 0.0002) hypersensitivity. Neurons labeled by the joint injection were identified in the C5-C8 DRGs. Significantly, more (P ≤ 0.0001) cholera toxin subunit B-positive neurons were identified in the C7 DRG than any other level. At C7, 54.4% ± 15.3% of those neurons were also CGRP-positive, whereas only 41.5% ± 5.4% of all neurons were CGRP-positive; this difference was significant (P = 0.0084).
conclusionThe greatest number of afferents from the C6-C7 facet joint has cell bodies in the C7 DRG, implicating this level as the most relevant for pain from this joint. In addition, peptidergic afferents seem to have an important role in facet joint-mediated pain.
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Registered trials
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