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BMC Urology
Published in: BMC Urology 1/2015

Open Access 01-12-2015 | Research article

Enhanced expression of TWIK-related arachidonic acid-activated K+ channel in the spinal cord of detrusor overactivity rats after partial bladder outlet obstruction

Authors: Junlong Zhang, Mingxin Cao, Xilian Wu, Yu Chen, Weijie Liang, Yueyou Liang

Published in: BMC Urology | Issue 1/2015

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Abstract

Background

Detrusor overactivity (DO) secondary to partial bladder outlet obstruction (PBOO) is closely associated with alteration of ion channels. The objective of this study is to investigate the expression of the TWIK-related arachidonic acid-activated K+ channel (TRAAK) in the L6-S1 spinal cord of DO rats after PBOO.

Methods

Female Sprague–Dawley rats undergoing PBOO surgery were screened for DO by cystometry. Sham-operated rats served as controls. The expression of TRAAK in the L6-S1 spinal cord was detected by real-time polymerase chain reaction, western blotting and immunohistochemistry.

Results

DO was successfully induced after chronic PBOO in rats, with an incidence rate of 62.5 %. Compared with sham-operated rats, the expression of TRAAK in the L6-S1 spinal cord of DO rats was significantly increased at the mRNA (1.886 ± 0.710 versus 0.790 ± 0.679, P < 0.05) and protein level (0.510 ± 0.087 versus 0.255 ± 0.107, P < 0.05). Immunohistochemical staining showed increased expression of TRAAK in the dorsal horn and ventral horn of the spinal cord.

Conclusions

Upregulation of TRAAK was observed in the spinal cord of DO rats after chronic PBOO, which may exert a protective effect against DO by suppressing the excitability of neurons.
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Metadata
Title
Enhanced expression of TWIK-related arachidonic acid-activated K+ channel in the spinal cord of detrusor overactivity rats after partial bladder outlet obstruction
Authors
Junlong Zhang
Mingxin Cao
Xilian Wu
Yu Chen
Weijie Liang
Yueyou Liang
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Urology / Issue 1/2015
Electronic ISSN: 1471-2490
DOI
https://doi.org/10.1186/s12894-015-0092-8

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