• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2022 Fiscal Year Final Research Report

Development of innovative treatment for Alzheimer's disease using local interstitial drug administration in the brain.

Research Project

  • PDF
Project/Area Number 20K21641
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionNagoya University

Principal Investigator

Saito Ryuta  名古屋大学, 医学系研究科, 教授 (10400243)

Co-Investigator(Kenkyū-buntansha) 下田 由輝  東北大学, 大学病院, 助教 (30815444)
Project Period (FY) 2020-07-30 – 2023-03-31
Keywordsアルツハイマー病 / CED
Outline of Final Research Achievements

Aim of this study was to develop novel therapeutic strategy by drug administration using ultrasound facilitated local interstitial drug delivery method that we developed using Alzheimer's disease model mouse 5xFAD (B6.Cg-Tg (APP SwFlLon, PSEN1 *M146L*L286V) 6799Vas/ Mmjax). In the model mouse brain, we established a system for stably evaluating amyloid accumulation by staining paraffin sections with immunoantibody staining. In addition, it was confirmed that neprilysin and curcumin provided effective drug distribution with the above drug delivery method. Furthermore, an attempt was made to decrease amyloid accumulation using these agents. As a result, it was confirmed that neprilysin most stably reduced amyloid plaques. Then, using 5xFAD mice, hippocampal administration techniques were stabilized and hippocampal administration was carried out.

Free Research Field

神経外科学分野

Academic Significance and Societal Importance of the Research Achievements

アルツハイマー病は、認知症を起こす代表的な病気の一つであり、日本での認知症患者数は、2012年現在462万人といわれ、2025年には700万人にまで増加すると予測されている。本疾患は、脳の中に「アミロイドβ(ベータ)タンパク」が蓄積し、このタンパク質の毒性により神経細胞が破壊されて神経細胞数が減ることで発症する。通常本疾患では脳の萎縮は、海馬のあたりから始まって脳全体へと拡がる。つまり病初期には、アミロイド蛋白の局所的な集積がある。これはアミロイドPET検査などで同定されている。従って本研究で確認したように脳局所薬剤投与によるアミロイド蛋白の低減は、新規治療開発につながる可能性がある。

URL: 

Published: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi