| Effect of tamsulosin on bladder microcirculation in a rat ischemia-reperfusion model, evaluated by pencil lens charge-coupled device microscopy system. | |
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MedLine Citation:
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PMID: 21056274 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: To investigate the effect of tamsulosin hydrochloride on bladder microcirculation in a rat ischemia-reperfusion model using a pencil lens charge-coupled device microscopy system (PLCMS). METHODS: Changes in blood flow through a submucosal capillary of the rat bladder were measured during bladder filling using the PLCMS. One week after starting infusion of either physiological saline or tamsulosin, blood flow in the bladder was halted by bladder overdistention via an infusion of physiological saline. The bladder was then emptied to be reperfused with blood. Changes in blood flow through a submucosal capillary of the bladder during ischemia and reperfusion were measured using a PLCMS, and the data obtained for the control group and tamsulosin group were compared. RESULTS: As the bladder was distended, the velocity of red blood cell flow in a submucosal capillary of the bladder slowed and stopped altogether when the bladder became overdistended. In the control group, capillary blood flow improved over time after release from overdistention but failed to return to the baseline level, demonstrating that reperfusion injury to bladder microcirculation was caused by bladder overdistention and emptying. In the tamsulosin group, capillary blood flow rapidly returned to baseline after release from overdistention. CONCLUSIONS: Using a PLCMS, bladder microcirculation was able to be visualized and quantitatively assessed by measuring the velocity of blood flow in a submucosal capillary of the bladder. Findings from the present study suggest that tamsulosin hydrochloride exerts a protective effect on blood flow in ischemia-reperfusion injury of the bladder. |
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Authors:
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Hideki Mizuno; Tokunori Yamamoto; Hiroko Okutsu; Akiyoshi Ohtake; Masao Sasamata; Yoshihisa Matsukawa; Yasuhito Funahashi; Masashi Kato; Ryohei Hattori; Momokazu Gotoh |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Urology Volume: 76 ISSN: 1527-9995 ISO Abbreviation: Urology Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-08 Completed Date: 2010-12-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0366151 Medline TA: Urology Country: United States |
Other Details:
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Languages: eng Pagination: 1266.e1-5 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Urology, Nagoya University, Graduate School of Medicine, Nagoya, Japan. hmizuno@med.nagoya-u.ac.jp |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adrenergic alpha-1 Receptor Antagonists
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pharmacology* Animals Blood Flow Velocity / drug effects Capillaries Female Image Processing, Computer-Assisted Laser-Doppler Flowmetry Microcirculation / drug effects* Microscopy, Video Rats Rats, Sprague-Dawley Reperfusion Injury / physiopathology* Sulfonamides / pharmacology* Urinary Bladder / blood supply* |
| Chemical | |
Reg. No./Substance:
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0/Adrenergic alpha-1 Receptor Antagonists; 0/Sulfonamides; 106133-20-4/tamsulosin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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