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Study of the pathogenesis of inflammation in benign prostatic hyperplasia focusing on the anatomical location

Research Project

Project/Area Number 19K18606
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56030:Urology-related
Research InstitutionUniversity of Fukui

Principal Investigator

Inamura So  福井大学, 学術研究院医学系部門(附属病院部), 助教 (50572434)

Project Period (FY) 2020-03-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords前立腺肥大症 / 慢性炎症 / 下部尿路症状 / 排尿障害 / 炎症細胞の分布 / 免疫染色 / 組織切片定量解析イメージングシステム
Outline of Research at the Start

前立腺肥大症は中高年男性に非常に多くみられる疾患の一つである。炎症は前立腺肥大症の病態形成、臨床症状に密接に関連していることが解明されているが、その詳細なしくみについてはわかっていない部分が多い。当研究では、ヒトの前立腺組織を使用し、炎症が前立腺肥大症に及ぼす影響を最先端の機器を使用して詳細に解析・検討し、病態の解明、治療法、予防法の確立を目指す。

Outline of Final Research Achievements

The location of inflammatory cells was evaluated objectively and quantitatively in a specimen of benign prostatic hyperplasia. In prostate tissue, lymphocytes were found to be significantly more T-cells than B-cells, and analysis of subtypes showed that helper T-cells were significant. Patients with a stronger degree of lymphocytic infiltration of the interstitium had a stronger lower urinary tract obstruction. The correlation of inflammatory cells and high endothelial microvessels with patients' smoking history, duration of smoking, and duration of smoking cessation was also examined, and it was found that in patients with a smoking history, the longer they had been smoke-free, the lower the percentage of high endothelial microvessels. In addition, an examination of the relationship between medications for benign prostatic hyperplasia and inflammation suggested that the administration of 5-alpha reductase inhibitors may exacerbate inflammation in the prostate gland.

Academic Significance and Societal Importance of the Research Achievements

前立腺肥大症は中高年男性に非常に多くみられる疾患である。薬物治療、手術療法など様々な治療方法が存在するが、治療抵抗性の症例も見受けられる。前立腺肥大症の病態として、慢性炎症が重要であることは認識されてきたものの、詳細な病態は不明な点が多い。今回の研究で、前立腺の炎症の分布、比率が症状に及ぼす影響、生活習慣と薬物治療が炎症に及ぼす影響を示すことができた。当研究の成果は、前立腺肥大症に対する、より有効な治療方法、予防方法の開発に寄与するものと考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (2 results)

All 2023 2022

All Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] The extent of chronic prostatic inflammation was negatively and positively correlated with the duration of alpha-1 blockers and 5 alpha reductase inhibitors before surgical treatment2023

    • Author(s)
      So Inamura, Tomochika Shinagawa, Hisato Kobayashi, Manami Tsutsumiuchi, Masaya Seki, Minekatsu Taga, Masato Fukushima, Hideaki Ito, Motohiro Kobayashi, Osamu Yokoyama, Naoki Terada
    • Organizer
      AUA 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 加齢と下部尿路の炎症2022

    • Author(s)
      稲村 聡、横山 修、寺田 直樹
    • Organizer
      第72回日本泌尿器科学会中部総会
    • Related Report
      2022 Annual Research Report
    • Invited

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Published: 2019-04-18   Modified: 2024-12-25  

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