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2022 Fiscal Year Final Research Report

New therapy with Low-energy shock wave for lower urinary tract symptom

Research Project

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Project/Area Number 19K18604
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56030:Urology-related
Research InstitutionTohoku University

Principal Investigator

Izumi Hideaki  東北大学, 医学系研究科, 非常勤講師 (80722545)

Project Period (FY) 2019-04-01 – 2023-03-31
KeywordsLow-energy shock wave / overactive bladder / underactive bladder
Outline of Final Research Achievements

This study was to evaluate whether Low-energy shock wave therapy (LESW) improves lower urinary tract symptoms. We used ischemic induced overactive bladder rat models, which underwent arterial injury (AI) and received a high cholesterol diet.
The voiding interval was significantly lengthened in AI with LESW groups than AI without LESW groups. Single voided volume was significantly increased in AI with LESW groups than AI without LESW groups. The bladder blood flow was significantly increased in AI with LESW groups than AI without LESW groups. This study indicates that LESW can be a novel therapeutic option for overactive bladder.

Free Research Field

泌尿器科

Academic Significance and Societal Importance of the Research Achievements

過活動膀胱の治療は、抗コリン薬・β3刺激薬などの内服薬による薬物療法が主流であるが、治療抵抗性を示すものもあり、重症例に対しては経尿道的に膀胱壁にボツリヌス毒素を注入する療法や体内に電気刺激装置を埋め込んで持続的に電気刺激を行う仙骨電気刺激療法が適応となっている。しかしこれらの治療は内服治療に比べ侵襲度の高い治療法である。
本研究により、低出力体外衝撃波が過活動膀胱の新たな侵襲性の低い治療方法となり得る可能性が示唆された。低出力体外衝撃波による膀胱壁の血流改善効果が確認されたが、その治療メカニズムはまだ十分には解明されておらず、今後のさらなる研究が望まれるところである。

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Published: 2024-01-30  

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