Abstract | BACKGROUND: AIMS AND OBJECTIVES: METHODS: Two groups of patients were recruited for this study. One group consisted of patients with dental pulpitis pain (n = 5) and controls (n = 12), and the other patients with BMS (n = 7) and controls (n = 10). BMS patients were diagnosed according to the International Association for the Study of Pain criteria; a pain history was collected, including the visual analogue scale (VAS). Immunohistochemistry with visual intensity and computer image analysis were used to evaluate levels of Na v 1.7 in dental pulp tissue samples from the dental pulpitis group, and tongue biopsies from the BMS group. RESULTS: There was a significantly increased visual intensity score for Na v 1.7 in nerve fibres in the painful dental pulp specimens, compared to controls. Image analysis showed a trend for an increase of the Na v 1.7 immunoreactive % area in the painful pulp group, but this was not statistically significant. When expressed as a ratio of the neurofilament % area, there was a strong trend for an increase of Na v 1.7 in the painful pulp group. Na v 1.7 immunoreactive fibres were seen in abundance in the sub-mucosal layer of tongue biopsies, with no significant difference between BMS and controls. CONCLUSION: Na v 1.7 sodium channel may play a significant role in inflammatory dental pain. Clinical trials with selective Na v 1.7 channel blockers should prioritize dental pulp pain rather than BMS.
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Authors | Kiran Beneng, Tara Renton, Zehra Yilmaz, Yiangos Yiangou, Praveen Anand |
Journal | BMC neuroscience
(BMC Neurosci)
Vol. 11
Pg. 71
(Jun 08 2010)
ISSN: 1471-2202 [Electronic] England |
PMID | 20529324
(Publication Type: Journal Article)
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Chemical References |
- NAV1.7 Voltage-Gated Sodium Channel
- SCN9A protein, human
- Sodium Channels
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Topics |
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Burning Mouth Syndrome
(metabolism)
- Dental Pulp
(metabolism)
- Dental Pulp Diseases
(metabolism)
- Female
- Humans
- Immunohistochemistry
- Male
- Middle Aged
- NAV1.7 Voltage-Gated Sodium Channel
- Nerve Fibers
(metabolism)
- Nociceptors
(metabolism)
- Pain Measurement
- Sodium Channels
(metabolism)
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