• 2073 Citations
  • 26 h-Index
20022020

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Article
2020

5-Aminosalicylic acid intolerance is associated with a risk of adverse clinical outcomes and dysbiosis in patients with ulcerative colitis

Mizuno, S., Ono, K., Mikami, Y., Naganuma, M., Fukuda, T., Minami, K., Masaoka, T., Terada, S., Yoshida, T., Saigusa, K., Hirahara, N., Miyata, H., Suda, W., Hattori, M. & Kanai, T., 2020 Jan 1, In : Intestinal Research. 18, 1, p. 69-78 10 p.

Research output: Contribution to journalArticle

Open Access

Efficacy and safety of once-weekly exenatide after switching from twice-daily exenatide in patients with type 2 diabetes

for the Twin-exenatide Study Group, 2020 Mar 1, In : Journal of Diabetes Investigation. 11, 2, p. 382-388 7 p.

Research output: Contribution to journalArticle

Open Access
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

Clinical and endoscopic findings to assist the early detection of duodenal adenoma and adenocarcinoma

Matsuzaki, J., Suzuki, H., Shimoda, M., Mori, H., Fukuhara, S., Miyoshi, S., Masaoka, T., Iwao, Y., Kanai, Y. & Kanai, T., 2019 Mar 1, In : United European Gastroenterology Journal. 7, 2, p. 250-260 11 p.

Research output: Contribution to journalArticle

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

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
2 Citations (Scopus)

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

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
2018

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

1 Citation (Scopus)
10 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

5 Citations (Scopus)
1 Citation (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

32 Citations (Scopus)
2017
6 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

38 Citations (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

1 Citation (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

4 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

15 Citations (Scopus)
2016

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

8 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

4 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

21 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

9 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

9 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

18 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

3 Citations (Scopus)
2015

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 Jan 1, In : BioMed Research International. 2015, 734548.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2014

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

6 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

11 Citations (Scopus)

Greater loss of productivity among Japanese workers with gastro-esophageal reflux disease (GERD) symptoms that persist vs resolve on medical therapy

Suzuki, H., Matsuzaki, J., Masaoka, T. & Inadomi, J. M., 2014 Jun, In : Neurogastroenterology and Motility. 26, 6, p. 764-771 8 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Mucosal expression of aquaporin-4 in the stomach of histamine type 2 receptor knockout mice and Helicobacter pylori-infected mice

Fukuhara, S., Matsuzaki, J., Tsugawa, H., Masaoka, T., Miyoshi, S., Mori, H., Fukushima, Y., Yasui, M., Kanai, T. & Suzuki, H., 2014 Dec 1, In : Journal of Gastroenterology and Hepatology (Australia). 29, S4, p. 53-59 7 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2013

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 1, In : Clinical Gastroenterology and Hepatology. 11, 5, p. 548-554 7 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

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

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 1, In : Journal of Neurogastroenterology and Motility. 19, 2, p. 161-170 10 p.

Research output: Contribution to journalArticle

24 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

14 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

52 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 1, In : American Journal of Gastroenterology. 108, 9, p. 1382-1391 10 p.

Research output: Contribution to journalArticle

113 Citations (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 1, In : Journal of Neurogastroenterology and Motility. 19, 2, p. 171-178 8 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2012

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 1, In : Clinical Gastroenterology and Hepatology. 10, 11, p. 1239-1245 7 p.

Research output: Contribution to journalArticle

126 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 1, In : Digestive Diseases and Sciences. 57, 4, p. 858-864 7 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2009

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 1, In : Digestion. 79, 2, p. 99-108 10 p.

Research output: Contribution to journalArticle

27 Citations (Scopus)
2008

Decreased levels of adiponectin in obese patients with gastroesophageal reflux evaluated by videoesophagography: Possible relationship between gastroesophageal reflux and metabolic syndrome

Iwasaki, E., Suzuki, H., Sugino, Y., Iida, T., Nishizawa, T., Masaoka, T., Hosoda, H., Kangawa, K. & Hibi, T., 2008 Dec, In : Journal of Gastroenterology and Hepatology (Australia). 23, SUPPL. 2, p. S216-S221

Research output: Contribution to journalArticle

13 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 Dec, In : Journal of Gastroenterology and Hepatology (Australia). 23, SUPPL. 2, p. S167-S170

Research output: Contribution to journalArticle

26 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

90 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 1, In : Hepato-gastroenterology. 55, 81, p. 138-141 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2007

A new eradication resistance index as a predictor of metronidazole- containing second-line treatment of Helicobacter pylori

Nishizawa, T., Suzuki, H., Masaoka, T., Iwasaki, E. & Hibi, T., 2007 Dec 1, In : Digestion. 76, 3-4, p. 215-220 6 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)
81 Citations (Scopus)

Enhanced ghrelin expression and subsequent acid secretion in mice with genetic H2-receptor knockout

Arakawa, M., Suzuki, H., Minegishi, Y., Fukushima, Y., Masaoka, T., Ishikawa, T., Hosoda, H., Kangawa, K. & Hibi, T., 2007 Sep 1, In : Journal of gastroenterology. 42, 9, p. 711-718 8 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Gastrointestinal: Enhanced gastric mucosal blood flow in aspirin intoxication

Nishizawa, T., Suzuki, H., Masaoka, T. & Hibi, T., 2007 Nov, In : Journal of Gastroenterology and Hepatology (Australia). 22, 11, 1 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Helicobacter pylori eradication restored sonic hedgehog expression in the stomach

Nishizawa, T., Suzuki, H., Masaoka, T., Minegishi, Y., Iwasaki, E. & Hibi, T., 2007 Apr 1, In : Hepato-gastroenterology. 54, 75, p. 697-700 4 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Rapid detection of point mutations conferring resistance to fluoroquinolone in gyrA of Helicobacter pylori by allele-specific PCR

Nishizawa, T., Suzuki, H., Umezawa, A., Muraoka, H., Iwasaki, E., Masaoka, T., Kobayashi, I. & Hibi, T., 2007 Feb 1, In : Journal of Clinical Microbiology. 45, 2, p. 303-305 3 p.

Research output: Contribution to journalArticle

37 Citations (Scopus)