Hiroyoshi Ota

Shinshu University — Japan

Medicine · Health Sciences

43h-index7.9kcitations360works2.12yr avg
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Research Topics

Helicobacter pylori-related gastroenterology studies(116), Gastric Cancer Management and Outcomes(57), Gastrointestinal disorders and treatments(43), Galectins and Cancer Biology(37), Glycosylation and Glycoproteins Research(35)

Publications360 total

<i>LGR5</i> Expression Is Associated With Prognosis in High-Grade Hepatocellular Carcinoma
International Journal of Surgical Pathology·2025
Underwater Endoscopic Mucosal Resection as a Salvage Strategy for a Non‐Lifting Early Sigmoid Colon Carcinoma After Failed Conventional Endoscopic Mucosal Resection: A Case Report
DEN Open·2025Open Access
Author response for "&lt;i&gt;LGR5&lt;/i&gt; expression is associated with prognosis in high-grade hepatocellular carcinoma"
2025
Prospective Multicenter Surveillance of Non–<i>H</i>. <i>pylori Helicobacter</i> Infections during Medical Checkups, Japan, 2022
Emerging infectious diseases·2025· 4 citedOpen Access
Long-term evaluation of Helicobacter pylori screening in school health checkups: an 11-year study in Japan
Journal of Gastroenterology·2025· 2 citedOpen Access
Cell lineage-specific immunohistochemical markers in biliary intraepithelial neoplasia: Implications for subclassification and grading
Pathology - Research and Practice·2025· 1 cited
Exploring LGR5 as a prognostic marker of extrahepatic cholangiocarcinoma: insights from expression analysis and clinical correlations
Diagnostic Pathology·2024· 1 citedOpen Access
Variability in morphology and immunohistochemistry of Crohn’s disease-associated small bowel neoplasms: implications of Claudin 18 and Cadherin 17 expression for tumor-targeted immunotherapies
Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin·2024· 2 citedOpen Access
Expression profiles of cadherin 17 and claudin 18.2 in comparison with peptide hormonal expression in pancreatic neuroendocrine tumours: Implications for targeted immunotherapy
Pathology - Research and Practice·2024· 2 cited
Leucine‐rich repeat‐containing G protein‐coupled receptor 5 expression in lymph node metastases of colorectal cancer: Clinicopathological insights and prognostic implications
Pathology International·2024· 4 citedOpen Access
Gastric carcinoma of the fundic gland type developed 32 years after Helicobacter pylori eradication for duodenal ulcer: a case report
Annals of Medicine and Surgery·2024· 1 citedOpen Access
Triple-drug combination therapy versus six-month proton pump inhibitor monotherapy in non-Helicobacter pylori Helicobacter eradication, and hyperacid environment preference of Helicobacter suis: a clinical study
BMC Gastroenterology·2024· 5 citedOpen Access
An Immunohistochemical Analysis of Osteopontin and S100 Calcium-binding Protein P is Useful for Subclassifying Large- and Small-duct Type Intrahepatic Cholangiocarcinomas
The American Journal of Surgical Pathology·2024· 6 cited
Diagnosis by combination of endoscopic findings helps differentiate non‐<i>Helicobacter pylori Helicobacter</i>‐infected gastritis from <i>Helicobacter pylori</i>‐infected gastritis
Helicobacter·2024· 5 cited
Four cases of <scp>non‐</scp><i>Helicobacter pylori Helicobacter</i>‐infected gastritis with duodenal spiral bacilli
Helicobacter·2024· 1 citedOpen Access
LGR5 Expression in Lymph Node Metastases of Colorectal Cancer: Clinicopathological Insights and Prognostic Implications
Research Square (Research Square)·2024Open Access
Mucosal damage in pancreaticobiliary maljunction is stronger in the gallbladder than in the bile duct
Pathology - Research and Practice·2023· 2 cited
Triple-drug combination therapy versus six-month proton pump inhibitor monotherapy in non-Helicobacter pylori Helicobacter eradication: a clinical study.
Research Square (Research Square)·2023Open Access
Rising Trends of Endoscopic Barrett’s Esophagus and Gastric Fundic Gland Polyps in Young Japanese Adults
The Turkish Journal of Gastroenterology·2023· 2 citedOpen Access
Artificial intelligence for evaluating the risk of gastric cancer: reliable detection and scoring of intestinal metaplasia with deep learning algorithms
Gastrointestinal Endoscopy·2023· 18 cited
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Frequent Co-authors

Tsutomu Katsuyama(20), Taiji Akamatsu(11), David Y. Graham(7), Shigeyuki Kawa(6), Hideaki Hamano(6), Kenji Sano(6), Kendo Kiyosawa(5), Jun Nakayama(5), Takeshi Uehara(5), Yoshio Yamaoka(5), Atsushi Sugiyama(4), Eiko Hidaka(4), Kazuhíko Ishihara(4), Makoto Kurihara(4), Kyoko Hotta(4), Takayuki Honda(4), Eiji Tanaka(4), Masahiro Asaka(3), Kiichi Satoh(3), Hala El‐Zimaity(3)