ArticleScientific reports2015
Toll-like receptor 4 signaling in neurons of trigeminal ganglion contributes to nociception induced by acute pulpitis in rats.
Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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Who cites it
47 citing papers in PubMed, 80 citations in OpenAlex.
- Precuneus hyperexcitability mediates inflammatory-driven pain hypersensitivity following sleep disruption: a multimodal neuroimaging study.Frontiers in immunology · 2026Article
- Molecular and neurovascular mechanisms of thermal sensitivity in teeth.Temperature (Austin, Tex.) · 2026Review
- Tooth Pulp Afferents and Transient Receptor Potential (TRP) Ion Channels as Key Regulators of Pulp Homeostasis, Inflammation, and Pain.International journal of molecular sciences · 2025Review
- Mechanically Induced Pulpitis: A Rat Model That Preserves Animal Well-Being.Biomedicines · 2025Article
- A novel NUTM2A-AS1/miR-769-5p axis regulates LPS-evoked damage in human dental pulp cells via the TLR4/MYD88/NF-κB signaling.Journal of dental sciences · 2025Article
- Symptomatic irreversible pulpitis and other orofacial pain: overcoming challenges in diagnosis and management.British dental journal · 2025Review
- Transcriptome Analysis of Trigeminal Ganglion and Medullary Dorsal Horn in Mice to Identify Potential Targets for Pulpitis-Induced Pain.ACS omega · 2025Article
- Article
- Transient receptor potential channels in dental inflammation and pain perception: A comprehensive review.Heliyon · 2025Article
- Effect of Oral Pathogens Associated With Pulpitis and Apical Periodontitis on Odontogenic Mesenchymal Stem Cells.Stem cells international · 2025Review
- Role of necroptosis in pulpitis: integration of bacterial infection, immune imbalance, and oxidative stress.PeerJ · 2025Review
- Elevated plasma levels of calcitonin gene-related peptide in individuals with rosacea: A cross-sectional case-control study.Journal of the European Academy of Dermatology and Venereology : JEADV · 2025Observational
- Article
- The MRGPR family of receptors in immunity.Immunity · 2024Review
- Review
- Periodontitis promotes bacterial extracellular vesicle-induced neuroinflammation in the brain and trigeminal ganglion.PLoS pathogens · 2023Article
- Electroacupuncture at Fengchi(GB20) and Yanglingquan(GB34) Ameliorates Paralgesia through Microglia-Mediated Neuroinflammation in a Rat Model of Migraine.Brain sciences · 2023Article
- Expression of Toll-like receptor 2, Dectin-1, and Osteopontin in murine model of pulpitis.Clinical oral investigations · 2023Article
- Electroacupuncture exerts prolonged analgesic and neuroprotective effects in a persistent dental pain model induced by multiple dental pulp injuries: GABAergic interneurons-astrocytes interaction.Frontiers in immunology · 2023Article
- Tuina for peripherally-induced neuropathic pain: A review of analgesic mechanism.Frontiers in neuroscience · 2022Review
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Pain caused by acute pulpitis (AP) is a common symptom in clinical settings. However, its underlying mechanisms have largely remained unknown. Using AP model, we demonstrated that dental injury caused severe pulp inflammation with up-regulated serum IL-1β. Assessment from head-withdrawal reflex thresholds (HWTs) and open-field test demonstrated nociceptive response at 1 day post injury. A consistent up-regulation of Toll-like receptor 4 (TLR4) in the trigeminal ganglion (TG) ipsilateral to the injured pulp was found; and downstream signaling components of TLR4, including MyD88, TRIF and NF-κB, and cytokines such as TNF-α and IL-1β, were also increased. Retrograde labeling indicated that most TLR4 positve neuron in the TG innnervated the pulp and TLR4 immunoreactivity was mainly in the medium and small neurons. Double labeling showed that the TLR4 expressing neurons in the ipsilateral TG were TRPV1 and CGRP positive, but IB4 negative. Furthermore, blocking TLR4 by eritoran (TLR4 antagonist) in TGs of the AP model significantly down-regulated MyD88, TRIF, NF-κB, TNF-α and IL-1β production and behavior of nociceptive response. Our findings suggest that TLR4 signaling in TG cells, particularly the peptidergic TRPV1 neurons, plays a key role in AP-induced nociception, and indicate that TLR4 signaling could be a potential therapeutic target for orofacial pain.
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