ArticleDrug design, development and therapy2021
Activation of GPR18 by Resolvin D2 Relieves Pain and Improves Bladder Function in Cyclophosphamide-Induced Cystitis Through Inhibiting TRPV1.
Article in Drug design, development and therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 14 citations in OpenAlex.
- Resolvin D2 and Its Effects on the Intestinal Mucosa of Crohn's Disease Patients: A Promising Immune Modulation Therapeutic Target.International journal of molecular sciences · 2025Article
- The mechanisms of specialized pro-resolving mediators in pain relief: neuro-immune and neuroglial regulations.Frontiers in immunology · 2025Review
- Review
- Peripheral Cannabinoid-1 Receptor Blockade Ameliorates Cystitis Severity.Cannabis and cannabinoid research · 2023Article
- Resolvins and cysteinyl-containing pro-resolving mediators activate resolution of infectious inflammation and tissue regeneration.Prostaglandins & other lipid mediators · 2023Review
- Possibility of averting cytokine storm in SARS-COV 2 patients using specialized pro-resolving lipid mediators.Biochemical pharmacology · 2023Review
- Specialized Pro-Resolving Mediators as Resolution Pharmacology for the Control of Pain and Itch.Annual review of pharmacology and toxicology · 2023Review
- Gpr18 agonist dampens inflammation, enhances myogenesis, and restores muscle function in models of Duchenne muscular dystrophy.Frontiers in cell and developmental biology · 2023Article
- Roles of Resolvins in Chronic Inflammatory Response.International journal of molecular sciences · 2022Review
- Broaden Horizons: The Advancement of Interstitial Cystitis/Bladder Pain Syndrome.International journal of molecular sciences · 2022Review
- Acute Intravesical Capsaicin for the Study of TRPV1 in the Lower Urinary Tract: Clinical Relevance and Potential for Innovation.Medical sciences (Basel, Switzerland) · 2022Review
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Authors and funding
11 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeHyperalgesia and bladder overactivity are two main symptoms of interstitial cystitis/bladder pain syndrome (IC/BPS). Cannabinoid receptors participate in the modulation of pain and bladder function. GPR18, a member of the cannabinoid receptor family, also participates in the regulation of pain and bladder function, but its underlying mechanisms are unknown. In this work, we sought to study the role of GPR18 in IC/BPS.
methodsA rat model of IC/BPS was established with cyclophosphamide (CYP). Paw withdrawal threshold (PWT) measurement and cystometry were used to evaluate pain and bladder function, respectively. RT-PCR, Western blotting and immunofluorescence were used to assess the expression and distribution of GPR18. The role of GPR18 in pain and bladder function was studied by intrathecal injection of resolvin D2 (RvD2, a GPR18 agonist) and O-1918 (a GPR18 antagonist). Calcium imaging was used to study the relationship between GPR18 and TRPV1.
resultsA rat model of IC/BPS, which exhibited a decreased PWT and micturition interval, was successfully established with CYP. The mRNA and protein expression of GPR18 was reduced in the bladder and dorsal root ganglia (DRG) in rats with CYP-induced cystitis. Intrathecal injection of RvD2 increased the PWT and micturition interval. However, O-1918 blocked the therapeutic effect of RvD2. GPR18 was present in bladder afferent nerves and colocalized with TRPV1 in DRG, and RvD2 decreased capsaicin-induced calcium influx in DRG.
conclusionActivation of GPR18 by RvD2 alleviated hyperalgesia and improved bladder function, possibly by inhibiting TRPV1 in rats with CYP-induced cystitis.
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