Abstract:
:Serotonin (5-hydroxytryptamine; 5-HT), a vasoactive bioamine with potent contractile activity, is thought to act indirectly in the urinary bladder by the stimulation of its presynaptic receptors. This results in the release of acetylcholine (ACh), which then acts on muscarinic receptors to produce bladder contractility. Bladder outlet obstruction (BOO) can lead to detrusor instability associated with denervation supersensitivity to ACh. Using a rabbit model of partial BOO, we investigated whether there were any associated changes in the neuronal 5-HT binding sites. Partial BOO was induced in adult male New Zealand White rabbits. Sham-operated age-matched rabbits acted as controls. After 1, 3 and 6 weeks the urinary bladders were excised. Detrusor sections were incubated with [(3)H]-5-HT. Autoradiographs were generated and analysed densitometrically. The presence of nerves was detected using immunohistochemistry with NF200. Autoradiography demonstrated a time-dependent, significant (P < 0.0001) up-regulation of [(3)H]-5-HT binding sites in the detrusor smooth muscle after the induction of BOO. Immunohistochemistry confirmed that the [(3)H]-5-HT binding sites were neuronal. In the rabbit model of partial BOO there was a significant time-dependent up-regulation of neuronal [(3)H]-5-HT binding sites in the detrusor. This change may influence 5-HT-mediated ACh release, resulting in increased bladder contractility. This, in turn, may play a role in detrusor instability associated with denervation post-junctional supersensitivity. These results provide a possible rationale for further investigation into the use of 5-HT antagonists in the treatment of detrusor instability associated with BOO.
journal_name
World J Uroljournal_title
World journal of urologyauthors
Khan MA,Dashwood MR,Thompson CS,Mumtaz FH,Morgan RJ,Mikhailidis DPdoi
10.1007/s003450050142keywords:
subject
Has Abstractpub_date
1999-10-01 00:00:00pages
255-60issue
5eissn
0724-4983issn
1433-8726pii
90170255.345journal_volume
17pub_type
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journal_title:World journal of urology
pub_type: 杂志文章
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journal_title:World journal of urology
pub_type: 杂志文章,评审
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journal_title:World journal of urology
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journal_title:World journal of urology
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journal_title:World journal of urology
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journal_title:World journal of urology
pub_type: 杂志文章
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journal_title:World journal of urology
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章,多中心研究
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更新日期:2016-05-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:1994-01-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章
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更新日期:2021-01-29 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-002-0300-5
更新日期:2003-05-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-007-0208-1
更新日期:2007-12-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-017-2082-9
更新日期:2017-12-01 00:00:00
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journal_title:World journal of urology
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pub_type: 杂志文章
doi:10.1007/s00345-019-02753-3
更新日期:2020-08-01 00:00:00
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pub_type: 杂志文章
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journal_title:World journal of urology
pub_type: 杂志文章,meta分析
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pub_type: 杂志文章,评审
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pub_type: 传,历史文章,杂志文章
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更新日期:1999-06-01 00:00:00
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pub_type: 杂志文章,评审
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journal_title:World journal of urology
pub_type: 杂志文章,meta分析
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更新日期:2019-09-01 00:00:00
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pub_type: 杂志文章
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journal_title:World journal of urology
pub_type: 杂志文章,随机对照试验
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更新日期:2014-10-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章,评审
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更新日期:2000-10-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章
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更新日期:2006-06-01 00:00:00
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journal_title:World journal of urology
pub_type: 已发布勘误
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更新日期:2020-09-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章,多中心研究
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更新日期:2015-11-01 00:00:00
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journal_title:World journal of urology
pub_type: 杂志文章,评审
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