Tarhan F, Çağlayan Duman N, Özkula S, Karaalp A, Cangüven Ö.
In vitro contractile responses of human detrusor smooth muscle to oxytocin: does it really have effect?
Aging Male 2020;
23:1141-1145. [PMID:
31910704 DOI:
10.1080/13685538.2020.1711722]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND AND OBJECTIVES
The aim of this study was to investigate the contractile effects of oxytocin (OT) in human detrusor muscle in in vitro conditions.
MATERIAL AND METHODS
Human detrusor muscle samples were obtained from seven patients that undergone radical cystectomy. Four female Wistar rats' uterine samples were used as control. Contractile responses were tested of carbachol in organ bath. Cumulative concentration response curves were constructed to OT and then the strips were incubated with atosiban (OT antagonist) and a second concentration response curve to OT were constructed.
RESULTS
Carbachol, contracted all human strips for the functionality test whereas OT in any concentrations did not produce significant contraction on all human strips. In only one bladder strip and in a very high concentration slight contraction was recorded. Moreover no contractile response was recorded in any OT concentrations in the presence of atosiban. The rat uterine strips responded to OT in a dose dependent manner. Atosiban, the OT receptor antagonist diminished totally those contractile responses.
CONCLUSION
It is been demonstrated here that there is no contractile response to OT in human detrusor muscle. These findings should be supported by further investigations determining the presence of the OT receptor in human detrusor.
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