ArticleInvestigative ophthalmology & visual science2023
Effects of Mirogabalin on Hyperalgesia and Chronic Ocular Pain in Tear-Deficient Dry-Eye Rats.
Article in Investigative ophthalmology & visual science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 7 citations in OpenAlex.
- Targeting α7 Nicotinic Acetylcholine Receptor for Modulating the Neuroinflammation of Dry Eye Disease Via Macrophages.Investigative ophthalmology & visual science · 2025Article
- Clinical Effectiveness of Mirogabalin Besylate for Trigeminal Neuropathy after Skull Base Surgery: Illustrative Cases.Medicines (Basel, Switzerland) · 2023Article
- Seasonality of Tear Meniscus Volume and Dry Eye-Related Symptoms - A Cross-Sectional Retrospective Cohort Study.Clinical ophthalmology (Auckland, N.Z.) · 2023Article
- Electroacupuncture Alleviates Dry Eye Ocular Pain Through TNF-ɑ Mediated ERK1/2/P2XJournal of pain research · 2023Article
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Authors and funding
4 authors at 1 institution in 1 country.
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Abstract
Purpose: Patients with dry eye disease (DED) sometimes complain of ocular pain. DED-related ocular pain has many similarities with neuropathic pain. Mirogabalin, a novel ligand for the α2δ subunit of voltage-gated calcium channels, is approved for treating neuropathic pain in Japan. This study aimed to investigate the effect of mirogabalin on hyperalgesia and chronic ocular pain in a rat DED model. Methods: DED was induced in female Sprague Dawley rats by unilaterally excising the external lacrimal gland (ELG) and Harderian gland (HG). After 4 weeks of ELG and HG removal, tear production (pH threads) and corneal epithelial damage (fluorescein staining) were evaluated. Corneal hyperalgesia and chronic pain were analyzed, respectively, by measuring capsaicin-induced eye-wiping behavior and c-Fos expression in the trigeminal nucleus. Mirogabalin (10 or 3 mg/kg) was evaluated for effects on DED-induced hyperalgesia and chronic ocular pain. Results: Tear production was significantly lower in DED-induced eyes than in control eyes. Corneal damage was significantly higher in DED eyes than in control eyes. Hyperalgesia and chronic ocular pain were detected 4 weeks after ELG and HG removal. Five days of mirogabalin administration significantly suppressed capsaicin-induced eye-wiping behavior, which indicated the suppression of ocular hyperalgesia. Administration of 10 mg/kg mirogabalin significantly reduced c-Fos expression in the trigeminal nucleus, which indicated the amelioration of chronic ocular pain. Conclusions: Mirogabalin suppressed DED-induced hyperalgesia and chronic ocular pain in a rat DED model. Our findings suggested that mirogabalin might effectively alleviate chronic ocular pain in patients with DED.
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