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2020 Fiscal Year Final Research Report

Gut microbiota involvement in surgeries for end-stage heart failure

Research Project

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Project/Area Number 19K18178
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionOsaka University

Principal Investigator

Nakae Masaro  大阪大学, 医学部附属病院, 医員 (00838584)

Project Period (FY) 2019-04-01 – 2021-03-31
Keywords腸内細菌叢 / 重症心不全外科 / 補助人工心臓
Outline of Final Research Achievements

Fresh fecal samples were collected by patients undergoing left ventricular assist device implantation and a DNA sequencing library was constructed. Although we found out the differences in gut microbiota between before surgeries and after surgeries, there was no tendency how gut microbiota changed. The patients with end-stage heart failure had various complications and other organ failure(i.e. diabetes, renal failure, etc.) which might affect the gut microbiota as previous study reported. In addition, other confounding factors (i.e. the use of antibiotics, postoperative fasting period might be involved. Further study is warranted to clarify the tendency of gut microbiota in surgeries for end-stage heart failure.

Free Research Field

心臓血管外科学

Academic Significance and Societal Importance of the Research Achievements

これまでに重症心不全外科治療前後における腸内フローラの分布に着目した研究はない。重症心不全外科手術は、手術術式・デバイスの進歩にも関わらずいまだ死亡率・合併症発症率が高く、その中でも腸管合併症は致命的となりうる疾患である。術前と術後安定期で腸内フローラ分布が変わっている事から、心拍出量の変化が腸内フローラに何かしらの影響があることが示唆された。現時点では、腸内フローラ変化と術後アウトカムとの相関を見いだすに至らなかったが、今後さらなる検討と症例数の積み重ねにより、bacterial translocationなどの腸管合併症の早期発見につなげる為の礎となる研究になると考えている。

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Published: 2022-01-27  

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