| Item type: | Article | ||||
|---|---|---|---|---|---|
| Journal or Publication Title: | World Journal of Urology | ||||
| Publisher: | SPRINGER | ||||
| Place of Publication: | NEW YORK | ||||
| Volume: | 30 | ||||
| Number of Issue or Book Chapter: | 5 | ||||
| Page Range: | pp. 693-700 | ||||
| Date: | 2012 | ||||
| Institutions: | Medicine > Lehrstuhl für Urologie | ||||
| Identification Number: |
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| Keywords: | INTERSTITIAL CYSTITIS; MUSCARINIC RECEPTORS; SIGNAL-TRANSDUCTION; M-2; DYSFUNCTION; EXPRESSION; PATHOGENESIS; HISTAMINE; CELLS; Interstitial cystitis; Muscarinic receptors; Purinergic receptors; Histamine receptors; Detrusor smooth muscle cells; Confocal immunofluorescence; Real-time PCR | ||||
| Dewey Decimal Classification: | 600 Technology > 610 Medical sciences Medicine | ||||
| Status: | Published | ||||
| Refereed: | Yes, this version has been refereed | ||||
| Created at the University of Regensburg: | Yes | ||||
| Item ID: | 63295 |
Web of ScienceAbstract
Purpose Dysregulation of neurotransmitter receptors may contribute to bladder overactivity (OAB) symptoms. To address the question whether specific receptor expression patterns are associated with bladder pain syndrome/interstitial cystitis (BPS/IC), we examined the expression of muscarinic, purinergic and histamine receptors in the detrusor. Methods Detrusor receptor expression was investigated ...
Abstract
Purpose Dysregulation of neurotransmitter receptors may contribute to bladder overactivity (OAB) symptoms. To address the question whether specific receptor expression patterns are associated with bladder pain syndrome/interstitial cystitis (BPS/IC), we examined the expression of muscarinic, purinergic and histamine receptors in the detrusor. Methods Detrusor receptor expression was investigated in bladder biopsies of female BPS/IC patients (n = 44; age 60.64 +/- 13.78, mean +/- SD) and carcinoma patients (n = 11; age 58.91 +/- 12.72) undergoing cystectomy. Protein expression of muscarinic (M2, M3), purinergic (P2X1-3) and histamine receptors (H1, H2) was analysed by confocal immunofluorescence, and gene expression was quantified by real-time polymerase chain reaction (qPCR). Results M2, P2X1, P2X2 and H1 receptor immunoreactivity (-IR) was significantly enhanced in BPS/IC compared to the control group, while there was no difference for M3-, P2X3- and H2-IR. We calculated a score, which separated BPS/IC from control patients with an AUC of 89.46%, showing 84.09% sensitivity and 90.91% specificity. Patients had a 9.25 times enhanced calculated risk for BPS/IC. In addition, two patient subgroups (M2 > M3 and M3 > M2) were observed, which differed in associated purinergic and histamine receptor expression. Conclusions M2, P2X1, P2X2 and H1 were significantly upregulated in BPS/IC patients, and H2 was occasionally highly overexpressed. There was no significant correlation between receptor protein and gene expression, implying posttranslational mechanisms being responsible for the altered receptor expressions. On the basis of individual receptor profiles, upregulated receptors could be targeted by monotherapy or combination therapy with already approved receptor inhibitors, thereby promoting tailored therapy for patients suffering from BPS/IC-like symptoms.
Metadata last modified: 19 Dec 2024 09:35
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