Yuta Yamazaki

ORCID: 0000-0003-3783-3973
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About
Contact & Profiles
Research Areas
  • Gastric Cancer Management and Outcomes
  • Surgical Simulation and Training
  • Colorectal Cancer Screening and Detection
  • Gamma-ray bursts and supernovae
  • Metastasis and carcinoma case studies
  • Hernia repair and management
  • Advanced Measurement and Detection Methods
  • Dental materials and restorations
  • Vascular Procedures and Complications
  • Temporomandibular Joint Disorders
  • Colorectal Cancer Surgical Treatments
  • Gastrointestinal Tumor Research and Treatment
  • Cardiac, Anesthesia and Surgical Outcomes
  • Appendicitis Diagnosis and Management
  • Disability Education and Employment
  • Infectious Aortic and Vascular Conditions
  • Abdominal Surgery and Complications
  • Genetic and Kidney Cyst Diseases
  • Chemotherapy-related skin toxicity
  • Parkinson's Disease and Spinal Disorders
  • Image and Object Detection Techniques
  • Ocular Disorders and Treatments
  • Infective Endocarditis Diagnosis and Management
  • Head and Neck Anomalies
  • Parkinson's Disease Mechanisms and Treatments

Showa University
2023-2025

Juntendo University
2024

Tottori University
2024

Canon Medical Systems Corporation (Japan)
2024

Canon (Japan)
2024

Showa University Hospital
2024

Niigata University Medical and Dental Hospital
2020-2024

Tohoku University
2023

National Astronomical Observatory of Japan
2023

The University of Tokyo
2023

Objectives To investigate the construct validity of Trunk Impairment Scale (TIS), which was developed to assess trunk impairment in patients with stroke, Parkinson’s disease (PD). Design This retrospective, cross-sectional study enrolled consecutive PD inpatients. Correlation analysis performed clarify whether TIS assessment related other balance functions, lower extremity muscle strength, or walking ability. Factor see how background factors differ from function, limb and Results Examining...

10.3389/fneur.2023.1303215 article EN cc-by Frontiers in Neurology 2024-01-03

Abstract Introduction Occlusal overload is considered to be one of the causes late implant failure. However, it unclear whether magnitude patient's occlusal force a risk factor for Purpose This case–control study aimed clarify association between cross‐sectional area (CSA) masseter muscle and Methods was limited implant‐supported fixed prostheses. We compared cases with at least failure ( n = 25 patients) controls 82 without Patients were matched by age, sex, year surgery, jaw tooth type,...

10.1111/cid.13189 article EN Clinical Implant Dentistry and Related Research 2023-02-01

Objective Laparoscopic endoscopic cooperative surgery for duodenal tumors (D‐LECS) has been developed to prevent leakage by reinforcing the submucosal dissection site. However, there no prospective trial showing feasibility of D‐LECS. Herein, we conducted a single‐arm confirmatory evaluate safety D‐LECS non‐ampullary superficial neoplasms. Methods This single‐center analyzed patients with neoplasms who underwent The primary endpoint was incidence any postoperative occurring on wall within 1...

10.1111/den.13705 article EN Digestive Endoscopy 2020-04-25

Abstract Introduction Recent advances in the treatment for esophageal cancer have improved prognosis after esophagectomy, but they led to an increased incidence of gastric tube cancer. In most patients who underwent retrosternal reconstruction, median sternotomy is performed; it associated with a risk postoperative bleeding and osteomyelitis, pain often negatively affects respiration. Here, we report first case thoracoscopic conduit resection supine position (TRGR‐S). Materials Surgical...

10.1111/ases.12757 article EN Asian Journal of Endoscopic Surgery 2019-10-03

Hepatic fibrosis, which is the excessive accumulation of extracellular matrices (ECMs) produced mainly from activated hepatic stellate cells (HSCs), develops to cirrhosis over several decades. There are no validated biomarkers that can non-invasively monitor production ECM (i.e., fibrogenesis). Transforming growth factor (TGF)-β, a key driver fibrogenesis, as an inactive latent complex, in active TGF-β enveloped by its pro-peptide, latency-associated protein (LAP). Thus, must be released...

10.1186/s13069-015-0034-9 article EN cc-by Fibrogenesis & Tissue Repair 2015-08-27

We studied the dynamics in chiral mesogenic phases observed binary mixtures of 5CB and bent-core molecules by using dynamic light scattering. In lower-temperature phase, a clear orientational fluctuation was observed, which not higher-temperature one. The wave number dependence relaxation frequency strongly indicates that nanoscale phase separation occurs fluctuations with nematic order are suppressed bent-core–rich domains. spatial heterogeneity motion yields exact information on...

10.1209/0295-5075/88/56004 article EN EPL (Europhysics Letters) 2009-12-01

A woman in her 80s had not defecated for several days and was rushed to our hospital. CT scan showed a fecal mass lodged the colon, diagnosis ileus. The images did indicate any strangulation or necrosis of so we attempted an urgent colonoscopy eliminate mass. completed because abdominal pain became more intense. patient defecate another 4 four days, again performed removed with endoscopic snare. There ulcer, partial obstruction blood flow from sigmoid region rectum. In cases obstructive...

10.11641/pde.104.1_106 article EN Progress of Digestive Endoscopy 2024-06-21

We report a case of male patient in his 70s with Borrmann type 4 gastric cancer, accompanied by obstructive jaundice and duodenal invasion. He was referred to our institution due unexplained liver dysfunction dilation the common bile duct. Upon undergoing upper gastrointestinal endoscopy, stenosis identified. A biopsy from lesion located greater curvature vestibule revealed poorly differentiated adenocarcinoma, specifically signet-ring cell carcinoma (Group 5). Due suspected peritoneal...

10.11641/pde.104.1_74 article EN Progress of Digestive Endoscopy 2024-06-21

Abstract Obturator hernia (OH) is a rare cause of bowel obstruction. Although several surgical approaches, including the laparoscopic approach, have been reported to date, standard approach for treating OH has not established. A 101‐year‐old woman who presented with constipation and vomiting was admitted our hospital. CT revealed an incarcerated small within left obturator foramen, diagnosis left‐sided ileus made. With patient under general anesthesia, exploratory laparoscopy performed; we...

10.1111/ases.12453 article EN Asian Journal of Endoscopic Surgery 2018-01-08

Hydrogels containing a large amount of water have biocompatibility and appropriate softness close to the living tissue. The purpose this research is 3D printing new type gel organ models in order overcome problems associated with general model . In work, we used RepRap SWIM-ER (3D printer) which developed our laboratory. Here, process using that can change transparency mechanical properties printed gels locally by changing parameters. process, multiple turbidity achieved single objects was...

10.1149/09813.0047ecst article EN ECS Transactions 2020-09-08

Abstract Introduction Three‐dimensional (3D) laparoscopic vision can improve depth perception. However, it is a question whether 3D motion in the direction. The aim of this study was to compare impact on forceps and horizontal directions. Methods All data were obtained from our previous two studies, where, total, 40 novices 20 moderately experienced surgeons participated. A simple phantom task performed training box. participants randomly assigned groups. Specifically, one group five times...

10.1111/ases.12745 article EN Asian Journal of Endoscopic Surgery 2019-08-08

Continuing antithrombic therapy (ATT) during surgery increases the risk of bleeding. However, it is difficult to discontinue ATT in emergency surgery. Therefore, safety laparoscopic cholecystectomy (LC) for acute cholecystitis (AC) still unclear. We aimed clarify affect LC AC.Patients with AC were classified into group (n = 30) and non-ATT 120). Postoperative outcomes compared after propensity score matching 22).Higher level c-reactive protein shorter activated partial thromboplastin time...

10.1186/s12893-022-01501-6 article EN cc-by BMC Surgery 2022-02-05

Enantioseparation of 3-hydroxycarboxylic acids via diastereomeric salt formation was demonstrated using 2-amino-1,2-diphenylethanol (ADPE) and cinchonidine as the resolving agents. Racemic 3-hydroxy-4-phenylbutanoic acid (rac-1), 3-hydroxy-4-(4-chlorophenyl)butanoic (rac-2), 3-hydroxy-5-phenylpentanoic (rac-3) were efficiently resolved these Moreover, successive crystallization less-soluble 1 EtOH yielded pure (R)-1 · in a high yield. The crystal structures salts elucidated it revealed that...

10.3390/molecules28010114 article EN cc-by Molecules 2022-12-23
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