Masayasu Ikutomi

ORCID: 0000-0002-6694-5950
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About
Contact & Profiles
Research Areas
  • Coronary Interventions and Diagnostics
  • Cardiac Imaging and Diagnostics
  • Cardiac Valve Diseases and Treatments
  • Angiogenesis and VEGF in Cancer
  • Cardiac electrophysiology and arrhythmias
  • Peripheral Artery Disease Management
  • Takotsubo Cardiomyopathy and Associated Phenomena
  • Cerebrovascular and Carotid Artery Diseases
  • Congenital heart defects research
  • Cardiac Arrhythmias and Treatments
  • Lymphatic System and Diseases
  • Pulmonary Hypertension Research and Treatments
  • Blood Coagulation and Thrombosis Mechanisms
  • Cardiac pacing and defibrillation studies
  • Diabetes Treatment and Management
  • Bone fractures and treatments
  • Orthopaedic implants and arthroplasty
  • Nuclear Receptors and Signaling
  • Genetic and Kidney Cyst Diseases
  • Orthopedic Surgery and Rehabilitation
  • Cardiac Structural Anomalies and Repair
  • Renal Diseases and Glomerulopathies
  • Aortic aneurysm repair treatments
  • Aortic Thrombus and Embolism
  • Photoacoustic and Ultrasonic Imaging

NTT Medical Center
2011-2024

Stanford University
2017-2022

Cardiovascular Institute of the South
2020-2021

Yokohama City University Medical Center
2018

Yokohama City University
2018

Teikyo University Chiba Medical Center
2013-2017

The University of Tokyo
2012-2015

Angiotensin-converting enzyme 2 (ACE2) is known as a negative regulator of the renin–angiotensin system. We aimed to determine roles ACE2 on development vascular diseases. Using two diversely different models diseases, hyperlipidaemia-induced atherosclerosis in apolipoprotein E knockout (KO) mice and mechanical injury-induced arterial neointimal hyperplasia C57Bl6 mice, we examined whether deficiency could affect formation lesions. resulted significantly larger lesions both aortic...

10.1093/cvr/cvt245 article EN Cardiovascular Research 2013-11-04

Immunoglobulin G4 (IgG4)-related systemic disease was first recognized as a clinicopathological entity about 10 years ago, and since then, it has attracted growing attention. It is an autoimmune which affects multiple organs including the pancreas, bile duct, salivary glands retroperitoneum. Further, recently reported that can be manifested periarteritis, often inflammatory abdominal aortic aneurysm. We describe case of 75-year-old man with pancreatitis parotitis who presented angina. The...

10.1159/000332996 article EN Cardiology 2011-01-01

Thrombotic microangiopathy (TMA) is a rare but lethal multisystem disease characterized by peripheral thrombocytopenia, microangiopathic hemolytic anemia, fever, and various stages of renal neurological dysfunctions.1,2) The causes TMA are mainly thrombotic thrombocytopenic purpura (TTP) or hemolytic-uremic syndrome (HUS), cases related to myelodysplastic (MDS) quite rare. Herein, we report case acute myocardial infarction (AMI) caused which strongly suspected have relationship MDS, discuss...

10.1536/ihj.16-100 article EN International Heart Journal 2016-01-01

Stent edge-related restenosis (SER) remains a potential limitation of drug-eluting stent (DES). Hinge motion at the edge could lead to mechanical stress and contribute incidents SER. We investigated effect hinge on SER after implantation current-generation DES in right coronary artery (RCA), where excessive vessel movement is commonly observed.

10.1253/circj.cj-21-0196 article EN Circulation Journal 2021-07-06

Despite previous reports indicating that in-stent tissue protrusion is not associated with worse clinical outcome, its natural history remains unclear. This the first to describe of thrombus post-stenting, using multimodal imaging.

10.1093/ehjcr/ytae252 article EN cc-by-nc European Heart Journal - Case Reports 2024-05-01

Device underexpansion is associated with late adverse outcomes after bioresorbable vascular scaffold (BVS) implantation. This study, representing official IVUS results of the ABSORB Japan trial, aimed to characterize findings, focusing specifically on acute device expansion, and investigate its impact lumen loss (LLL) Absorb-BVS compared cobalt-chromium everolimus-eluting stents (CoCr-EES).ABSORB enrolled 148 patients (2:1 randomization) in cohort. Serial was prescheduled at post-procedure 3...

10.1016/j.ijcha.2020.100623 article EN cc-by-nc-nd IJC Heart & Vasculature 2020-09-04

Most cases of cholesterol embolism are known to be triggered by cardiac catheterization, cardiovascular surgery, anticoagulation, or fibrinolytic therapy; however, spontaneous after aortic dissection rare. In this report, we describe a case type B dissection, which rapidly developed into multiple organ failure and death.A 65-year-old man with untreated hypertension was admitted our hospital sudden back pain diagnosed dissection. The patient experienced rapid progression inflammation...

10.1093/ehjcr/ytad482 article EN cc-by-nc European Heart Journal - Case Reports 2023-10-01

Mechanism of femoropopliteal in-stent restenosis has been underappreciated. The aim this animal study was to elucidate vascular response after bare nitinol self-expanding stents (SESs) implantation. Misago, Smart Flex, or Innova stent randomly implanted in 36 swine arteries. At week 4, quantitative vessel analysis (QVA) performed on legs, which 18 underwent histological evaluation angiography. remaining legs QVA and at 13. Fibrin deposition excessive 4. Internal elastic lamina (IEL)...

10.1007/s12928-022-00889-5 article EN cc-by Cardiovascular Intervention and Therapeutics 2022-10-18

We describe a patient with torsades de pointes (TdP) who was implanted cardiac resynchronization therapy defibrillator (CRT-D).At the time of CRT-D implantation, left ventricular (LV) epicardial pacing exacerbated TdPs and developed into electrical storm, which triggered even by biventricular pacing.We needed to inactivate LV lead for 2 weeks.At next device check testing still induced TdPs, whereas did not.After starting continuous no arrhythmias happened, furthermore QT intervals prolonged...

10.4020/jhrs.27.332 article EN cc-by-nc-nd Journal of Arrhythmia 2011-01-01

Background: Recent studies have suggested that late outgrowth endothelial progenitor cells (EPCs) emerging from cultured peripheral blood mononuclear (PBMNCs) might higher angiogenic potential than of classically defined early EPCs (EOCs). However, it still remains undetermined which EPC subpopulations rigorously by the time emergence has highest therapeutic potency. Methods and Results: Human PBMNCs freshly isolated were under cell conditions. EOCs as attached on culture plates at days 3 to...

10.1161/circ.126.suppl_21.a9617 article EN Circulation 2012-11-20
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