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Wróbel A, Nowakowski Ł, Doboszewska U, Rechberger E, Bańczerowska-Górska M, Wlaźlak E, Zakrocka I, Wlaź P, Semczuk A, Dudka J, Poleszak E. Blebbistatin reveals beneficial effects on the cystometric parameters in an animal model of detrusor overactivity. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:843-850. [PMID: 30852655 PMCID: PMC7260150 DOI: 10.1007/s00210-019-01640-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 02/25/2019] [Indexed: 11/29/2022]
Abstract
The aims of the study were to determine the effectiveness of blebbistatin (BLEB) on detrusor overactivity (DO) in an animal model induced by retinyl acetate (RA) and, because of potential urothelial permeability, to evaluate the degenerative impact of BLEB on the urothelium. Three days after RA instillation into the urinary bladder, BLEB was administered into the bladder and immediately after cystometric assessment was performed. Furthermore, Evans Blue extravasation into bladder tissue and urothelium thickness were measured. Sixty female Wistar rats were used and randomly assigned to one of four groups (n = 15 in each group): (1) control, (2) RA, (3) BLEB, and (4) RA + BLEB. RA administration induced changes in cystometric parameters reflecting DO, as previously reported. Treatment with BLEB did not significantly alter cystometric parameters in rats which did not receive RA. Administration of BLEB to rats pretreated with RA reversed changes in cystometric parameters induced by RA in basal pressure, threshold pressure, detrusor overactivity index, amplitude of nonvoiding contractions, frequency of nonvoiding contractions, voided volume, volume threshold, intercontraction interval, bladder compliance, and volume threshold to elicit nonvoiding contractions. There were no significant differences in Evans Blue extravasation into bladder tissue or urothelium thickness between the groups. The current research provides new data on the possible utility of blebbistatin in the pharmacotherapy of DO, which is an important feature of overactive bladder (OAB). Further studies in human patients with DO/OAB are warranted to confirm these preclinical results.
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Affiliation(s)
- Andrzej Wróbel
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-954, Lublin, Poland.
| | - Łukasz Nowakowski
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-954, Lublin, Poland
| | - Urszula Doboszewska
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, 20-033, Lublin, Poland.
| | - Ewa Rechberger
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-954, Lublin, Poland
| | | | - Edyta Wlaźlak
- Clinic of Operative Gynecology and Gynecologic Oncology, 1st Department of Gynecology and Obstetrics, Medical University of Lodz, Wileńska 37, Łódź, 94-029, Poland
| | - Izabela Zakrocka
- Chair and Department of Nephrology, Medical University of Lublin, Jaczewskiego 8, 20-954, Lublin, Poland
| | - Piotr Wlaź
- Department of Animal Physiology, Institute of Biology and Biochemistry, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, 20-033, Lublin, Poland
| | - Andrzej Semczuk
- Second Department of Gynecology, Medical University of Lublin, Jaczewskiego 8, 20-954, Lublin, Poland
| | - Jarosław Dudka
- Chair and Department of Toxicology, Medical University of Lublin, Chodźki 8, 20-093, Lublin, Poland
| | - Ewa Poleszak
- Chair and Department of Applied Pharmacy, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
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