Abstract:
PURPOSE:This study examined whether the laser-capture microdissection (LCM) method can achieve separation of urothelial cells from detrusor cells or superficial urothelial cells from intermediate/basal urothelial cells, using α-smooth muscle actin (SMA) and cytokeratin 20 (CK20). In addition, we investigated the changes in expression of muscarinic receptors in laser-captured urothelial and detrusor cells in rats with chronic cystitis. METHODS:Female SD rats were injected with cyclophosphamide (75 mg/kg) intraperitoneally at day 1, 4, 7 and 10 to induce chronic cystitis. Saline was injected in the same protocol for controls. Bladder specimens were cut at 8 μm thickness, fixed in 70% ethanol and lightly stained by hematoxylin and eosin, and then superficial urothelium, intermediate/basal urothelium and detrusor muscles were laser-captured separately. Real-time PCR was performed to examine expressions of α-SMA, CK20, muscarinic 2 receptors (M2R) and muscarinic 3 receptors (M3R). RESULTS:The expression of α-SMA mRNA in detrusor muscle cells was 200 times higher than that in urothelial cells in controls. CK20 mRNA expression in apical urothelial cells was 55 times more than that in detrusor muscle and four times more than that in intermediate/basal urothelial cells. Expressions of M2R and M3R mRNA were increased in urothelial cells and decreased in detrusor muscles following chronic cystitis. CONCLUSIONS:The LCM could be useful for tissue collection of detrusor muscle and different layers of urothelial cells with minimal contamination of other cell types, and cell type-specific changes in molecular expression could accurately be analyzed. Increased expression of urothelial MR might enhance urothelial-afferent interactions to induce bladder overactivity/pain conditions associated with bladder inflammation.
journal_name
Int Urol Nephroljournal_title
International urology and nephrologyauthors
Sugino Y,O'Malley KJ,Wang Z,Tyagi P,Birder LA,Ogawa O,Yoshimura Ndoi
10.1007/s11255-015-0926-zsubject
Has Abstractpub_date
2015-04-01 00:00:00pages
637-42issue
4eissn
0301-1623issn
1573-2584journal_volume
47pub_type
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journal_title:International urology and nephrology
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journal_title:International urology and nephrology
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journal_title:International urology and nephrology
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journal_title:International urology and nephrology
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journal_title:International urology and nephrology
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doi:10.1007/s11255-014-0904-x
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pub_type: 杂志文章,meta分析,评审
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journal_title:International urology and nephrology
pub_type: 杂志文章
doi:10.1007/s11255-006-9091-8
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journal_title:International urology and nephrology
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