Establishment of new diagnostic methods for PICS.

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K11425
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Emergency medicine
• Research Institution: Nippon Medical School
• Principal Investigator: YAMADA Marina 日本医科大学, 医学部, 講師 (70508621)
• Co-Investigator(Kenkyū-buntansha): 横堀 将司 日本医科大学, 医学部, 准教授 (70449271) ; 近田 祐介 日本医科大学, 医学部, 助教 (80637827) ; 太田黒 崇伸 日本医科大学, 医学部, 助教 (60786812)
• Research Collaborator: CHIBA Tomohiro ; MIYASHITA Masao ; YOKOTA Hiroyuki
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 敗血症 / PICS / Humanin

Outline of Final Research Achievements

Marked increase in survival after critical conditions such as septic shock have led us to further improve long-term illness described as post-intensive care syndrome (PICS), which covers both physical and psychiatric dysfunction among patients recovered from intensive care. The aim of the study was to establish new diagnostic methods for PICS. We developed murine PICS model by cecal ligation and puncture (CLP). CLP-induced sepsis caused acute increase in serum inflammatory cytokines and induced gliosis in the central nervous system, leading to working memory impairment. Using the model, we measured the HN levels in blood and tissue. As a result, HN levels in blood was decreased after CLP, which was negatively correlated with working memory impairment. Using blood samples of patients recovered from intensive care, we measured HN levels. We, however, could not get same result.

Free Research Field

脳機能障害、炎症

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、将来的に重症疾患患者が慢性期に発症する中枢神経系機能障害の予後予測法および治療薬を開発することにつながる。期間内に予後予測法および治療薬を確立することはできなかったが、その候補因子としてHumaninの有用性は明らかにできた。本研究期間で得られた結果は、最終的には患者 QOLの保持、患者関係者の負担軽減、医療費削減に直結しうるものであり、とても重要な一歩だと考えている。