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2023 Fiscal Year Final Research Report

MMP inhibition of statins proves renal protection via neutrophil infiltration

Research Project

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Project/Area Number 21K09346
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56030:Urology-related
Research InstitutionOkayama University

Principal Investigator

Yoshinaga Kasumi  岡山大学, 大学病院, 助教 (70833276)

Co-Investigator(Kenkyū-buntansha) 荒木 元朗  岡山大学, 医歯薬学域, 教授 (90467746)
城所 研吾  川崎医科大学, 医学部, 講師 (50435020)
Project Period (FY) 2021-04-01 – 2024-03-31
Keywords腎移植 / 虚血再灌流障害 / 好中球 / MMP / スタチン
Outline of Final Research Achievements

In vitro imaging showed that statin treatment reduced neutrophil accumulation in the glomerulus after ischemia-reperfusion. In addition, Cr levels on the day after ischemia-reperfusion tended to be lower in the statin group than in the non-treated group. On the other hand, the active and total MMP-9 levels were higher in the statin group than in the control group, contrary to our expectation. t=6 had a lower active/total ratio than t=1, suggesting a decrease in activity over time.
The pleiotropic effects of statins may have complicated the results of this study. Based on this, we are working on similar studies using other drugs.

Free Research Field

腎移植

Academic Significance and Societal Importance of the Research Achievements

虚血再還流障害が移植腎の生着にもたらす影響は大きく、それには好中球浸潤が主要な役割を担っている。白血球が組織に浸潤するためにはmatrix metalloproteinases(MMP)の存在が必要不可欠である。高脂血症治療薬のスタチンにはMMP阻害作用があり、好中球浸潤の抑制を介して組織障害を軽減する作用を持つと考えた。
今回、イメージングや血清Cr値は上記仮説を後押しする可能性を示したが、MMP定量に関しては相反する結果を認めた。活性の抑制以外に発現や放出の抑制があるのか検討したり、他剤変更でより望ましい結果を得られるものがあるのか等、今後の研究が望まれる。

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Published: 2025-01-30  

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