Abstract | OBJECTIVES: METHODS: Female C57BL/6 mice received intravesical instillations of protease activated receptor 4 (100 μmol/L, for 1 h) three times every other day and abdominal mechanical hypersensitivity (50% mechanical threshold) was tested on day 0 (baseline), and at days 1, 2, 3, 4, 7 and 9 after the first protease-activated receptor 4 injection. At the end of the experiment, micturition changes were measured and bladders were examined for histological changes. Macrophage migration inhibitory factor antagonist ( MIF098; 40 mg/kg i.p. b.i.d.) or high mobility group box 1 inhibitor ( glycyrrhizin; 50 mg/kg i.p. daily) was administered from day 2 until day 8. RESULTS: There was a significant and persistent decrease in abdominal mechanical threshold starting from day 3 in the protease-activated receptor 4-treated group that persisted until day 9 (5 days post-last instillation), but not in the control group. Glycyrrhizin fully reversed while MIF098 partially reversed abdominal mechanical hypersensitivity in protease-activated receptor 4-treated mice. The changes started on day 3 after the first protease-activated receptor 4 instillation, and analgesic effects lasted throughout the rest of the testing period. None of the groups had significant micturition changes or overt bladder histological changes. CONCLUSIONS:
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Authors | Fei Ma, David E Hunt, Lin Leng, Richard Bucala, Katherine L Meyer-Siegler, Pedro L Vera |
Journal | International journal of urology : official journal of the Japanese Urological Association
(Int J Urol)
Vol. 25
Issue 10
Pg. 887-893
(10 2018)
ISSN: 1442-2042 [Electronic] Australia |
PMID | 30112848
(Publication Type: Journal Article)
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Copyright | © 2018 The Japanese Urological Association. |
Chemical References |
- HMGB1 Protein
- HMGB1 protein, mouse
- Macrophage Migration-Inhibitory Factors
- Receptors, Thrombin
- Glycyrrhizic Acid
- Intramolecular Oxidoreductases
- Mif protein, mouse
- protease-activated receptor 4
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Topics |
- Administration, Intravesical
- Animals
- Disease Models, Animal
- Female
- Glycyrrhizic Acid
(pharmacology, therapeutic use)
- HMGB1 Protein
(antagonists & inhibitors, metabolism)
- Humans
- Intramolecular Oxidoreductases
(antagonists & inhibitors, metabolism)
- Macrophage Migration-Inhibitory Factors
(antagonists & inhibitors, metabolism)
- Mice
- Mice, Inbred C57BL
- Pelvic Pain
(chemically induced, drug therapy, pathology)
- Receptors, Thrombin
(administration & dosage)
- Urinary Bladder
(drug effects, pathology)
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