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2023 Fiscal Year Final Research Report

Mechanisms of fluid and electrolyte abnormalities in hepatocellular carcinoma

Research Project

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Project/Area Number 21K15671
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionJikei University School of Medicine (2022-2023)
Kagawa University (2021)

Principal Investigator

Kidoguchi Satoshi  東京慈恵会医科大学, 医学部, 助教 (90896094)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsがん / 体液・電解質異常
Outline of Final Research Achievements

We generated a rat model of hepatocellular carcinoma with diethylnitrosamine administration in order to identify the mechanism of fluid and electrolyte abnormalities in liver cancer, a typical cancer that shows fluid and electrolyte abnormalities such as edema and ascites.
We have found that water and sodium content were comparatively increased in skin and muscle independent of plasma and urine in the rats with hepatocellular carcinoma. Water and sodium accumulation in these tissues were at least partially achieved with increased aldosterone secretion from adrenal glands, activation of glucocorticoid receptors in muscle, and accumulation of urea in the renal medulla, as parts of the activation of water conservation system.

Free Research Field

腎臓内科

Academic Significance and Societal Importance of the Research Achievements

今回の検討により、がんにおいては浮腫や腹水といった所見が出現する前の早期段階から組織における体液・電解質異常が起こっていることが明らかとなった。また、この組織局所における体液・電解質異常は多臓器における体液保持機構が関与していることも併せて明らかとなった。近年、組織における体液・電解質異常と高血圧を含めた心血管疾患との関連を示唆する報告もみられており、がん患者における心血管疾患発症はこの組織における体液・電解質異常を介して起こっている可能性が示唆され、「組織における体液・電解質異常」に対する治療介入ががん患者の心血管疾患を抑制しうるという可能性を示した意味で社会的意義が大きいと考えている。

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Published: 2025-01-30  

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