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Research Output 2002 2019

  • 1938 Citations
  • 25 h-Index
  • 104 Article
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2019

10-Year Trends in Helicobacter pylori Eradication Rates by Sitafloxacin-Based Third-Line Rescue Therapy

Mori, H., Suzuki, H., Matsuzaki, J., Masaoka, T. & Kanai, T., 2019 Jan 1, (Accepted/In press) In : Digestion.

Research output: Contribution to journalArticle

Amoxicillin
Helicobacter pylori
Mutation
Microbial Drug Resistance
Meta-Analysis

Current knowledge of irritable bowel syndrome-treatment

Masaoka, T. & Kanai, T., 2019 Jan 1, In : Journal of Japanese Society of Gastroenterology. 116, 7, p. 570-575 6 p.

Research output: Contribution to journalArticle

Irritable Bowel Syndrome

Current status of first- and second-line Helicobacter pylori eradication therapy in the metropolitan area: a multicenter study with a large number of patients

Mori, H., Suzuki, H., Omata, F., Masaoka, T., Asaoka, D., Kawakami, K., Mizuno, S., Kurihara, N., Nagahara, A., Sakaki, N., Ito, M., Kawamura, Y., Suzuki, M., Shimada, Y., Sasaki, H., Matsuhisa, T., Torii, A., Nishizawa, T., Mine, T., Ohkusa, T. & 3 others, Kawai, T., Tokunaga, K. & Takahashi, S., 2019 Jul 1, In : Therapeutic Advances in Gastroenterology. 12

Research output: Contribution to journalArticle

Open Access
Helicobacter pylori
Multicenter Studies
Potassium
Proton Pump Inhibitors
Amoxicillin

Neutrophil-activating Protein Polymorphism of Helicobacter pylori Determines the Host Risk of Dyspepsia

Matsuzaki, J., Tsugawa, H., Kashiwazaki, Y., Mori, H., Yamamoto, Y., Kameyama, H., Masaoka, T., Kanai, T. & Suzuki, H., 2019 Jan 1, In : CMGH. 8, 2, p. 295-297.e6

Research output: Contribution to journalArticle

Open Access
Dyspepsia
Helicobacter pylori neutrophil-activating protein A

Novel mainstream capnometer system is safe and feasible even under CO 2 insufflation during ERCP-related procedure: A pilot study

Takimoto, Y., Iwasaki, E., Masaoka, T., Fukuhara, S., Kawasaki, S., Seino, T., Katayama, T., Minami, K., Tamagawa, H., Machida, Y., Ogata, H. & Kanai, T., 2019 Feb 1, In : BMJ Open Gastroenterology. 6, 1, e000266.

Research output: Contribution to journalArticle

Open Access
Insufflation
Endoscopic Retrograde Cholangiopancreatography
Carbon Monoxide
Apnea
Bites and Stings
2018
1 Citation (Scopus)

Absence of high-risk stigmata predicts good prognosis even in severely anemic patients with suspected acute upper gastrointestinal bleeding

Horibe, M., Ogura, Y., Matsuzaki, J., Kaneko, T., Yokota, T., Okawa, O., Nakatani, Y., Iwasaki, E., Nishizawa, T., Hosoe, N., Masaoka, T., Yahagi, N., Namiki, S. & Kanai, T., 2018 Jan 1, (Accepted/In press) In : United European Gastroenterology Journal.

Research output: Contribution to journalArticle

Christianity
Hemorrhage
Blood Transfusion
Hemoglobins
Mortality
9 Citations (Scopus)
Helicobacter pylori
Mutation
Microbial Sensitivity Tests
Fluoroquinolones
sitafloxacin
4 Citations (Scopus)

Burden of impaired sleep quality on work productivity in functional dyspepsia

Matsuzaki, J., Suzuki, H., Togawa, K., Yamane, T., Mori, H., Komori, T., Masaoka, T. & Kanai, T., 2018 Apr 1, In : United European Gastroenterology Journal. 6, 3, p. 398-406 9 p.

Research output: Contribution to journalArticle

Dyspepsia
Sleep
Economics
Adenoma
Adenocarcinoma
Neoplasms
Barrett Esophagus
Delayed Diagnosis
Marginal Zone B-Cell Lymphoma
Lymphoproliferative Disorders
Methotrexate
Stomach
In Situ Hybridization
14 Citations (Scopus)

The effect of fecal microbiota transplantation on psychiatric symptoms among patients with irritable bowel syndrome, functional diarrhea and functional constipation: An open-label observational study

Kurokawa, S., Kishimoto, T., Mizuno, S., Masaoka, T., Naganuma, M., Liang, K. C., Kitazawa, M., Nakashima, M., Shindo, C., Suda, W., Hattori, M., Kanai, T. & Mimura, M., 2018 Aug 1, In : Journal of Affective Disorders. 235, p. 506-512 7 p.

Research output: Contribution to journalArticle

Irritable Bowel Syndrome
Constipation
Observational Studies
Psychiatry
Diarrhea
2017
4 Citations (Scopus)
Esomeprazole
Metronidazole
Microbial Drug Resistance
Helicobacter pylori
Penicillins
25 Citations (Scopus)

Bifidobacterium-Rich Fecal Donor May Be a Positive Predictor for Successful Fecal Microbiota Transplantation in Patients with Irritable Bowel Syndrome

Mizuno, S., Masaoka, T., Naganuma, M., Kishimoto, T., Kitazawa, M., Kurokawa, S., Nakashima, M., Takeshita, K., Suda, W., Mimura, M., Hattori, M. & Kanai, T., 2017 Jun 21, (Accepted/In press) In : Digestion. p. 29-38 10 p.

Research output: Contribution to journalArticle

Bifidobacterium
Irritable Bowel Syndrome
Tissue Donors
Dysbiosis
Psychology
1 Citation (Scopus)

Colonic dysmotility and morphological abnormality frequently detected in Japanese patients with irritable bowel syndrome

Mizukami, T., Sugimoto, S., Masaoka, T., Suzuki, H. & Kanai, T., 2017, In : Intestinal Research. 15, 2, p. 236-243 8 p.

Research output: Contribution to journalArticle

Irritable Bowel Syndrome
Colonoscopy
Intubation
Tomography
Control Groups
4 Citations (Scopus)

Enteric Glial Dysfunction Evoked by Apolipoprotein E Deficiency Contributes to Delayed Gastric Emptying

Fukuhara, S., Masaoka, T., Nishimura, S., Nakamura, M., Matsuzaki, J., Tsugawa, H., Miyoshi, S., Mori, H., Kawase, S., Shibata, S., Okano, H., Kanai, T. & Suzuki, H., 2017 Nov 2, (Accepted/In press) In : Digestive Diseases and Sciences. p. 1-11 11 p.

Research output: Contribution to journalArticle

Gastric Emptying
Apolipoproteins E
Neuroglia
Knockout Mice
Glial Fibrillary Acidic Protein
14 Citations (Scopus)

Gender Difference of Gastric Emptying in Healthy Volunteers and Patients with Functional Dyspepsia

Mori, H., Suzuki, H., Matsuzaki, J., Taniguchi, K., Shimizu, T., Yamane, T., Masaoka, T. & Kanai, T., 2017 Jan 1, In : Digestion. 95, 1, p. 72-78 7 p.

Research output: Contribution to journalArticle

Dyspepsia
Gastric Emptying
Healthy Volunteers
Breath Tests
Acetates
2016
6 Citations (Scopus)

A prospective study on symptom generation according to spicy food intake and TRPV1 genotypes in functional dyspepsia patients

Lee, S. Y., Masaoka, T., Han, H. S., Matsuzaki, J., Hong, M. J., Fukuhara, S., Choi, H. S. & Suzuki, H., 2016, (Accepted/In press) In : Neurogastroenterology and Motility.

Research output: Contribution to journalArticle

Dyspepsia
Eating
Genotype
Prospective Studies
Capsaicin
4 Citations (Scopus)

A simple scoring system to assess the need for an endoscopic intervention in suspected upper gastrointestinal bleeding: A prospective cohort study

Horibe, M., Kaneko, T., Yokogawa, N., Yokota, T., Okawa, O., Nakatani, Y., Ogura, Y., Matsuzaki, J., Iwasaki, E., Hosoe, N., Masaoka, T., Inadomi, J. M., Suzuki, H., Kanai, T. & Namiki, S., 2016 Oct 1, In : Digestive and Liver Disease. 48, 10, p. 1180-1186 7 p.

Research output: Contribution to journalArticle

Area Under Curve
Christianity
Cohort Studies
Prospective Studies
Hemorrhage
20 Citations (Scopus)

Efficacy of 10-day Sitafloxacin-Containing Third-Line Rescue Therapies for Helicobacter pylori Strains Containing the gyrA Mutation

Mori, H., Suzuki, H., Matsuzaki, J., Tsugawa, H., Fukuhara, S., Miyoshi, S., Hirata, K., Seino, T., Matsushita, M., Masaoka, T. & Kanai, T., 2016 Aug 1, In : Helicobacter. 21, 4, p. 286-294 9 p.

Research output: Contribution to journalArticle

Helicobacter pylori
Mutation
Esomeprazole
Amoxicillin
Metronidazole
8 Citations (Scopus)

Emerging treatments in neurogastroenterology: Acotiamade, a novel treatment option for functional dyspepsia

Matsushita, M., Masaoka, T. & Suzuki, H., 2016, (Accepted/In press) In : Neurogastroenterology and Motility.

Research output: Contribution to journalArticle

Dyspepsia
Therapeutics
Health Insurance
Acetylcholinesterase
Z 338
7 Citations (Scopus)

Influence of regular exercise on gastric emptying in healthy men: A pilot study

Matsuzaki, J., Suzuki, H., Masaoka, T., Tanaka, K., Mori, H. & Kanai, T., 2016 Sep 1, In : Journal of Clinical Biochemistry and Nutrition. 59, 2, p. 130-133 4 p.

Research output: Contribution to journalArticle

Gastric Emptying
Exercise
Acetates
Alcohols
Gastrointestinal Diseases
18 Citations (Scopus)

Rifabutin-based 10-day and 14-day triple therapy as a third-line and fourth-line regimen for Helicobacter pylori eradication: A pilot study

Mori, H., Suzuki, H., Matsuzaki, J., Tsugawa, H., Fukuhara, S., Miyoshi, S., Hirata, K., Seino, T., Matsushita, M., Nishizawa, T., Masaoka, T. & Kanai, T., 2016 Jun 1, In : United European Gastroenterology Journal. 4, 3, p. 380-387 8 p.

Research output: Contribution to journalArticle

Rifabutin
Helicobacter pylori
Therapeutics
Amoxicillin
Rifamycins
2 Citations (Scopus)

The normoglycaemic biobreeding rat: A spontaneous model for impaired gastric accommodation

Vanormelingen, C., Vanuytsel, T., Masaoka, T., De Hertogh, G., Vanheel, H., Vanden Berghe, P., Farré, R. & Tack, J., 2016 Jan 1, In : Gut. 65, 1, p. 73-81 9 p.

Research output: Contribution to journalArticle

Stomach
Inflammation
Protein Isoforms
Nitric Oxide Synthase Type I
Dyspepsia
2015
4 Citations (Scopus)

Nordihydroguaiaretic acid disrupts the antioxidant ability of Helicobacter pylori through the repression of SodB activity in vitro

Tsugawa, H., Mori, H., Matsuzaki, J., Masaoka, T., Hirayama, T., Nagasawa, H., Sakakibara, Y., Suematsu, M. & Suzuki, H., 2015, In : BioMed Research International. 2015, 734548.

Research output: Contribution to journalArticle

Masoprocol
Helicobacter pylori
Antioxidants
Stomach
Gerbillinae
2014
6 Citations (Scopus)

A spontaneous animal model of intestinal dysmotility evoked by inflammatory nitrergic dysfunction

Masaoka, T., Vanuytsel, T., Vanormelingen, C., Kindt, S., Salim Rasoel, S., Boesmans, W., De Hertogh, G., Farré, R., Vanden Berghe, P. & Tack, J., 2014 May 12, In : PLoS One. 9, 5, e95879.

Research output: Contribution to journalArticle

Medical problems
diabetes
Animals
Animal Models
animal models
1 Citation (Scopus)

Does bile reflux influence the progression of barrett's esophagus to adenocarcinoma?

Masaoka, T. & Suzuki, H., 2014 Jan, In : Journal of Neurogastroenterology and Motility. 20, 1, p. 124-126 3 p.

Research output: Contribution to journalArticle

Bile Reflux
Barrett Esophagus
Adenocarcinoma
6 Citations (Scopus)

Does the AIMS65, a new risk score for upper gastrointestinal bleeding, work in Japan?

Masaoka, T. & Suzuki, H., 2014, In : Digestive Endoscopy. 26, 3, p. 331-332 2 p.

Research output: Contribution to journalArticle

Endoscopic Hemostasis
Gastrointestinal Endoscopy
Gastrointestinal Hemorrhage
Hospital Mortality
Japan
10 Citations (Scopus)

From intestinal permeability to dysmotility: The biobreeding rat as a model for functional gastrointestinal disorders

Vanuytsel, T., Vanormelingen, C., Vanheel, H., Masaoka, T., Rasoel, S. S., Tóth, J., Houben, E., Verbeke, K., De Hertogh, G., Berghe, P. V., Tack, J. & Farré, R., 2014 Oct 29, In : PLoS One. 9, 10, e111132.

Research output: Contribution to journalArticle

Gastrointestinal Diseases
digestive system diseases
Rats
Permeability
permeability
7 Citations (Scopus)
Esophageal Diseases
Gastroesophageal Reflux
Efficiency
Therapeutics
Absenteeism
6 Citations (Scopus)
Aquaporin 4
Histamine Receptors
Knockout Mice
Helicobacter pylori
Stomach

Response to Sanger

Tack, J., Janssen, P., Harris, M. S., Jones, M., Masaoka, T., Farré, R., Törnblom, H., Van Oudenhove, L. & Simrén, M., 2014, In : American Journal of Gastroenterology. 109, 3, p. 445-446 2 p.

Research output: Contribution to journalArticle

Gastroparesis
Gastrointestinal Agents
Gastric Emptying
Type 2 Diabetes Mellitus
2013
4 Citations (Scopus)

Biliary Findings Assist in Predicting Enlargement of Intraductal Papillary Mucinous Neoplasms of the Pancreas

Matsuzaki, J., Suzuki, H., Okuda, S., Tanimoto, A., Asakura, K., Fukuhara, S., Okada, S., Hirata, K., Mori, H., Masaoka, T., Higuchi, H., Hozawa, S., Kuribayashi, S., Takebayashi, T. & Hibi, T., 2013 May, In : Clinical Gastroenterology and Hepatology. 11, 5, p. 548-554 7 p.

Research output: Contribution to journalArticle

Pancreatic Neoplasms
Magnetic Resonance Cholangiopancreatography
Gallbladder
Common Bile Duct
Confidence Intervals

Do we need to eradicate Helicobacter pylori in patients with GORD?

Masaoka, T. & Suzuki, H., 2013, In : United European Gastroenterology Journal. 1, 4, p. 223-225 3 p.

Research output: Contribution to journalArticle

Helicobacter pylori
Atrophy
Quality of Life
24 Citations (Scopus)

Gastrointestinal motility changes and myenteric plexus alterations in spontaneously diabetic biobreeding rats

Demedts, I., Masaoka, T., Kindt, S., Hertogh, G. D., Geboes, K., Farré, R., Berghe, P. V. & Tack, J., 2013 Apr, In : Journal of Neurogastroenterology and Motility. 19, 2, p. 161-170 10 p.

Research output: Contribution to journalArticle

Myenteric Plexus
Gastrointestinal Motility
Gastric Emptying
Electromyography
Type 1 Diabetes Mellitus
14 Citations (Scopus)

Improvement of reflux symptom related quality of life after Helicobacter pylori eradication therapy

Hirata, K., Suzuki, H., Matsuzaki, J., Masaoka, T., Saito, Y., Nishizawa, T., Iwasaki, E., Fukuhara, S., Okada, S. & Hibi, T., 2013 Mar 1, In : Journal of Clinical Biochemistry and Nutrition. 52, 2, p. 172-178 7 p.

Research output: Contribution to journalArticle

Helicobacter pylori
Quality of Life
Gastroesophageal Reflux
Dyspepsia
Therapeutics
45 Citations (Scopus)

In functional dyspepsia, hypersensitivity to postprandial distention correlates with meal-related symptom severity

Farré, R., Vanheel, H., Vanuytsel, T., Masaoka, T., Törnblom, H., Simrén, M., Van Oudenhove, L. & Tack, J. F., 2013 Sep, In : Gastroenterology. 145, 3, p. 566-573 8 p.

Research output: Contribution to journalArticle

Dyspepsia
Meals
Hypersensitivity
Fasting
Stomach
92 Citations (Scopus)

The relation between symptom improvement and gastric emptying in the treatment of diabetic and idiopathic gastroparesis

Janssen, P., Scott Harris, M., Jones, M., Masaoka, T., Farré, R., Törnblom, H., Van Oudenhove, L., Simrén, M. & Tack, J., 2013 Sep, In : American Journal of Gastroenterology. 108, 9, p. 1382-1391 10 p.

Research output: Contribution to journalArticle

Gastroparesis
Gastric Emptying
Pharmaceutical Preparations
Cisapride
Domperidone
1 Citation (Scopus)

Validation of octanoate breath test for measuring gastric emptying in rats

Demedts, I., Vanormelingen, C., Van Billoen, H., Vanuytsel, T., Farré, R., Masaoka, T., Verbruggen, A., Verbeke, K., Berghe, P. V. & Tack, J., 2013 Apr, In : Journal of Neurogastroenterology and Motility. 19, 2, p. 171-178 8 p.

Research output: Contribution to journalArticle

Breath Tests
Gastric Emptying
Atropine
Stomach
Meals
2012
22 Citations (Scopus)

Acotiamide, a novel gastroprokinetic for the treatment of patients with functional dyspepsia: Postprandial distress syndrome

Altan, E., Masaoka, T., Farré, R. & Tack, J., 2012 Sep, In : Expert Review of Gastroenterology and Hepatology. 6, 5, p. 533-544 12 p.

Research output: Contribution to journalArticle

Dyspepsia
Satiation
Japan
Therapeutics
Pain
110 Citations (Scopus)

Efficacy of Buspirone, a Fundus-Relaxing Drug, in Patients With Functional Dyspepsia

Tack, J., Janssen, P., Masaoka, T., Farré, R. & Van Oudenhove, L., 2012 Nov, In : Clinical Gastroenterology and Hepatology. 10, 11, p. 1239-1245 7 p.

Research output: Contribution to journalArticle

Buspirone
Gastrointestinal Agents
Mechanoreceptors
Dyspepsia
Gastric Emptying
11 Citations (Scopus)

Enhanced gastric ghrelin production and secretion in rats with gastric outlet obstruction

Iwasaki, E., Suzuki, H., Masaoka, T., Nishizawa, T., Hosoda, H., Kangawa, K. & Hibi, T., 2012 Apr, In : Digestive Diseases and Sciences. 57, 4, p. 858-864 7 p.

Research output: Contribution to journalArticle

Gastric Outlet Obstruction
Ghrelin
Stomach
Stem Cell Factor
Pathologic Constriction
2011
43 Citations (Scopus)

Functional dyspepsia

Tack, J., Masaoka, T. & Janssen, P., 2011 Oct, In : Current Opinion in Gastroenterology. 27, 6, p. 549-557 9 p.

Research output: Contribution to journalArticle

Dyspepsia
Inflammation
Duodenum
Pharmaceutical Preparations
Comorbidity
2009
27 Citations (Scopus)

Early Helicobacter pylori eradication restores sonic hedgehog expression in the gastric mucosa of mongolian gerbils

Nishizawa, T., Suzuki, H., Nakagawa, I., Minegishi, Y., Masaoka, T., Iwasaki, E. & Hibi, T., 2009 Apr, In : Digestion. 79, 2, p. 99-108 10 p.

Research output: Contribution to journalArticle

Hedgehogs
Gerbillinae
Gastric Mucosa
Helicobacter pylori
Stomach
27 Citations (Scopus)

Gastroparesis: Current concepts and management

Masaoka, T. & Tack, J., 2009 Sep, In : Gut and Liver. 3, 3, p. 166-173 8 p.

Research output: Contribution to journalArticle

Gastroparesis
Stomach
Domperidone
Jejunostomy
Metoclopramide
27 Citations (Scopus)

Rebamipide-promoted restoration of gastric mucosal sonic hedgehog expression after early helicobacter pylori eradication

Nishizawa, T., Suzuki, H., Nakagawa, I., Minegishi, Y., Masaoka, T., Iwasaki, E. & Hibi, T., 2009 Jun, In : Digestion. 79, 4, p. 259-262 4 p.

Research output: Contribution to journalArticle

Anti-Ulcer Agents
Hedgehog Proteins
Gerbillinae
Quinolones
Helicobacter Infections
2008
12 Citations (Scopus)
Adiponectin
Gastroesophageal Reflux
X-Rays
Body Mass Index
Obesity
13 Citations (Scopus)

Gastric epithelial cell modality and proton pump inhibitor

Masaoka, T., Suzuki, H. & Hibi, T., 2008 May, In : Journal of Clinical Biochemistry and Nutrition. 42, 3, p. 191-196 6 p.

Research output: Contribution to journalArticle

Proton Pump Inhibitors
Tumors
Stomach
Animals
stomach
26 Citations (Scopus)

Gatifloxacin-based triple therapy as a third-line regimen for Helicobacter pylori eradication

Nishizawa, T., Suzuki, H., Nakagawa, I., Iwasaki, E., Masaoka, T. & Hibi, T., 2008, In : Journal of Gastroenterology and Hepatology (Australia). 23, SUPPL. 2

Research output: Contribution to journalArticle

Helicobacter pylori
Rabeprazole
Clarithromycin
Amoxicillin
Bacteria
86 Citations (Scopus)

Helicobacter pylori eradication shifts monocyte Fcγ receptor balance toward inhibitory FcγRIIB in immune thrombocytopenic purpura patients

Asahi, A., Nishimoto, T., Okazaki, Y., Suzuki, H., Masaoka, T., Kawakami, Y., Ikeda, Y. & Kuwana, M., 2008 Aug 1, In : Journal of Clinical Investigation. 118, 8, p. 2939-2949 11 p.

Research output: Contribution to journalArticle

Idiopathic Thrombocytopenic Purpura
Fc Receptors
Helicobacter pylori
Monocytes
Purpura
3 Citations (Scopus)

Persistent oxidative stress in the corpus mucosa is evoked by long-term treatment of H. pylori-infected patients with proton pump inhibitors

Suzuki, M., Tanaka, S., Suzuki, K., Kitahora, T., Masaoka, T., Suzuki, H. & Hibi, T., 2008 Jan, In : Hepato-Gastroenterology. 55, 81, p. 138-141 4 p.

Research output: Contribution to journalArticle

Lansoprazole
Proton Pump Inhibitors
Pylorus
Mucous Membrane
Oxidative Stress