Takahiro Gonai

ORCID: 0000-0001-6759-2459
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About
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Research Areas
  • Gastric Cancer Management and Outcomes
  • Gastrointestinal disorders and treatments
  • Diverticular Disease and Complications
  • Metastasis and carcinoma case studies
  • Gastrointestinal Bleeding Diagnosis and Treatment
  • Inflammatory Bowel Disease
  • Gastrointestinal Tumor Research and Treatment
  • Helicobacter pylori-related gastroenterology studies
  • Renal Diseases and Glomerulopathies
  • Esophageal and GI Pathology
  • Marine and Offshore Engineering Studies
  • Vasculitis and related conditions
  • IgG4-Related and Inflammatory Diseases
  • Gut microbiota and health
  • Esophageal Cancer Research and Treatment
  • Colorectal Cancer Surgical Treatments
  • Colorectal Cancer Screening and Detection
  • Biliary and Gastrointestinal Fistulas
  • Pharmacological Effects of Natural Compounds
  • Microscopic Colitis
  • Foreign Body Medical Cases
  • Marine Bivalve and Aquaculture Studies

Iwate Medical University
2018-2024

Uji Hospital
2022-2023

Iwate Prefectural Central Hospital
2023

To determine appropriate fecal calprotectin cut-off values for the prediction of endoscopic and histologic remission in Japanese patients with ulcerative colitis (UC).We performed a cross-sectional observational study 131 UC measured levels by fluorescence enzyme immunoassay. The clinical activity was assessed partial Mayo score (PMS). Relapse defined as increase PMS 2 points or more stool frequency rectal bleeding subscore. activities were evaluated 50 within 2-mo period from sampling....

10.3748/wjg.v24.i38.4384 article EN cc-by-nc World Journal of Gastroenterology 2018-10-11

We aimed to investigate an association between clinicopathological features, including immunohistochemical mucin phenotypes, and magnifying chromoendoscopic findings with crystal violet staining (ME-CV) in non-ampullary duodenal epithelial tumors (NADETs).A total of 55 patients NADET were divided into 3 groups by phenotype: intestinal, gastrointestinal, or gastric. ME-CV classified 4 patterns: convoluted, leaf-like, reticular/sulciolar, pinecone. The features compared among the...

10.1159/000485505 article EN Digestion 2018-01-01

Objective Indigo naturalis (IN) is a traditional Chinese medicine that has recently been reported to be effective for ulcerative colitis (UC). The aim of this study was evaluate the efficacy and safety IN.

10.2169/internalmedicine.2446-18 article EN Internal Medicine 2019-05-21

Background/Aims Magnifying endoscopic classification systems, such as the Japan narrow-band imaging (NBI) Expert Team (JNET) classification, have been widely used for predicting histologic diagnosis and invasion depth of colorectal epithelial tumors. However, disagreement exists among observers regarding magnifying diagnosis, because these systems are subjective. We herein investigated utility microvascular density (eMVD) calculated from NBI images in Methods reviewed 169 tumors (97...

10.5217/ir.2019.00061 article EN cc-by-nc Intestinal Research 2019-11-01

Background and Aim Few studies have evaluated risk factors for short-term re-bleeding in patients with colonic diverticular bleeding (CDB). We aimed to reveal within a month CDB.Methods retrospectively analyzed clinical course of CDB diagnosed at 10 institutions between 2015 2019. Risk were assessed by Cox proportional hazards models.Results Among 370 patients, 173 (47%) had been under the use antithrombotic agents (ATs) 34 (9%) experienced month. Multivariate analysis revealed that ATs was...

10.1080/00365521.2022.2035812 article EN cc-by-nc-nd Scandinavian Journal of Gastroenterology 2022-02-09

Although colonic diverticular bleeding (CDB) is common, few reports have described the effects of antithrombotic agents (ATs) on CDB. This study aimed to clarify risk factors re-bleeding within a year in CDB patients.We retrospectively analyzed patients. Among 324 patients who were hospitalized for acute lower gastrointestinal at our institution during period from 2015 2019, we used 76 diagnosed as Risk determined by Cox proportional hazard models.Of analyzed, 32 taking ATs, nine whom...

10.1002/deo2.22 article EN cc-by DEN Open 2021-08-25

There are few reports on bowel preparation for early colonoscopy in patients with suspected colonic diverticular bleeding (CDB). We aim to clarify a retrospective, multicenter study.In retrospective cohort study at 10 institutions, we analyzed clinical features of diagnosed CDB, who underwent within 24 h. compared were prepared polyethylene glycol lavage (PEL) and those without PEL. evaluated the effects PEL CDB.A total 129 (53%) under 113 The group was younger, had fewer comorbidities,...

10.1002/deo2.311 article EN cc-by DEN Open 2023-11-02
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