2021 Fiscal Year Final Research Report
Analysis of cleaving enzymes activities for bradykinin in hereditary angioedema
Project/Area Number |
19K17917
|
Research Category |
Grant-in-Aid for Early-Career Scientists
|
Allocation Type | Multi-year Fund |
Review Section |
Basic Section 54020:Connective tissue disease and allergy-related
|
Research Institution | Juntendo University |
Principal Investigator |
Honda Daisuke 順天堂大学, 医学部, 非常勤助教 (50790094)
|
Project Period (FY) |
2019-04-01 – 2022-03-31
|
Keywords | 遺伝性血管性浮腫 / ブラジキニン / ブラジキニン分解酵素 / C1インヒビター / 血管性浮腫 / 腸管浮腫 / 喉頭浮腫 |
Outline of Final Research Achievements |
In hereditary angioedema (type I/II) due to the deficiency or dysfunction of C1-inhibitor, we analyzed cleaving enzymes (NEP, ACE, DPP4, APP, CPN) activities for bradykinin which can potentially cause the occurrence and disappearance of acute attacks. As a result, the activities of CPN and DPP4 at acute attacks significantly elevated and decreased, respectively. In addition, there was a significant difference in the activity of ACE between abdominal attacks and non-abdominal attacks. These results can be leading to knowing new mechanisms in hereditary angioedema.
|
Free Research Field |
補体
|
Academic Significance and Societal Importance of the Research Achievements |
遺伝性血管性浮腫は、5万人に1人の有病率の希少疾患である。急性発作時には、四肢などの皮膚の浮腫のみならず、激しい腹痛(腸管浮腫)や窒息(喉頭浮腫)により致死的となることもあるが、病態の解明は進んでいない難病である。致死的な急性発作が起きる機序を解明することで難病患者の生活の質を維持することにつながるため、本研究結果のよって得られたブラジキニン分解酵素群活性のデータを蓄積することで、病態の解明や新薬の開発につながることが見出された。
|