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2021 Fiscal Year Final Research Report

High-fat diet increases postoperative pain in rats

Research Project

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Project/Area Number 19K10370
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionKanagawa Dental College

Principal Investigator

Kido Kanta  神奈川歯科大学, 歯学部, 准教授 (40343032)

Co-Investigator(Kenkyū-buntansha) 杉野 繁一  東北大学, 大学病院, 講師 (00423765)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords術後痛 / 肥満 / トランスクリプトーム解析
Outline of Final Research Achievements

In the present study, obese rats induced by high-fat diet intake had enhanced and prolonged postoperative pain including elevated spontaneous pain score and lower mechanical threshold. Transcriptome analysis of peripheral and central nervous tissue revealed no major gene expression changes in the spinal cord and 19 gene expression changes in the dorsal root ganglia. Increased peripheral sensitization by genes related to lipid metabolism was suggested as one of the mechanisms by which obesity enhances postoperative pain.

Free Research Field

歯科麻酔学

Academic Significance and Societal Importance of the Research Achievements

世界的な肥満人口増加により、肥満患者の診療機会が増え、様々な周術期管理上の問題が顕在化している。近年、多くの肥満患者の術後痛が悪化・遷延し、生活の質が著しく損なわれていることが明らかとなった。 しかし、なぜ肥満者は術後の痛みが増強・遷延するのか、その詳細なメカニズムは分かっていない。本研究から、脂質代謝に関わる遺伝子が神経の末梢性感作を増強して術後の痛みを増強遷延していることが示唆された。

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Published: 2023-01-30  

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