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Y. Hirai · SciRah

Researcher profile · Semantic Scholar

Y. Hirai

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Y. Hirai — researcher profile on SciRah

h-index: 24
Works: 83
Citations: 2,099

Most-cited papers

Antibacterial Activity of Hydrolyzable Tannins Derived from Medicinal Plants against Helicobacter pylori
K. Funatogawa, S. Hayashi, H. Shimomura, T. Yoshida +3 more
2004Microbiology and immunology319 citations Open access
Semantic Scholar
Survival of bacteria under dry conditions; from a viewpoint of nosocomial infection.
Y. Hirai
1991Journal of Hospital Infection206 citations
Semantic Scholar
Unique cholesteryl glucosides in Helicobacter pylori: composition and structural analysis
Y. Hirai, M. Haque, Takashi Yoshida, K. Yokota +2 more
1995Journal of Bacteriology203 citations Open access
Semantic Scholar
Bacillus cereus bacteremia outbreak due to contaminated hospital linens
Teppei Sasahara, S. Hayashi, Y. Morisawa, T. Sakihama +2 more
2011European Journal of Clinical Microbiology and Infectious Diseases134 citations
Semantic Scholar
Antibacterial Properties of Antimicrobial‐Finished Textile Products
Ken-ichi Takai, Tokuko Ohtsuka, Y. Senda, Miyuki Nakao +3 more
2002Microbiology and immunology115 citations Open access
Semantic Scholar
Role of Sphingomyelinase in Infectious Diseases Caused by Bacillus cereus
M. Oda, Manabu Hashimoto, Masaya Takahashi, Y. Ohmae +10 more
2012PLoS ONE60 citations Open access
Semantic Scholar
Sensitive Detection of Bacillus anthracis Using a Binding Protein Originating from γ‐Phage
Y. Fujinami, Y. Hirai, I. Sakai, M. Yoshino +1 more
2007Microbiology and immunology52 citations
Semantic Scholar
Alteration in the composition of cholesteryl glucosides and other lipids in Helicobacter pylori undergoing morphological change from spiral to coccoid form.
H. Shimomura, S. Hayashi, K. Yokota, K. Oguma +1 more
2004FEMS Microbiology Letters52 citations
Semantic Scholar
Steroid hormones as bactericidal agents to Helicobacter pylori.
Kouichi Hosoda, H. Shimomura, S. Hayashi, K. Yokota +1 more
2011FEMS Microbiology Letters51 citations Open access
Semantic Scholar
Identification and characterization of a vitamin D3 decomposition product bactericidal against Helicobacter pylori
Kouichi Hosoda, H. Shimomura, Kiyofumi Wanibuchi, H. Masui +4 more
2015Scientific Reports46 citations Open access
Semantic Scholar
Characterization of Streptococcus sanguis Isolated from Patients with Behçet's Disease
K. Yokota, Syunji Hayashi, Y. Araki, E. Isogai +5 more
1995Microbiology and immunology43 citations
Semantic Scholar
A pathway through interferon-gamma is the main pathway for induction of nitric oxide upon stimulation with bacterial lipopolysaccharide in mouse peritoneal cells.
M. Matsuura, S. Saito, Y. Hirai, H. Okamura
2003European Journal of Biochemistry42 citations Open access
Semantic Scholar
Regulation of Lipopolysaccharide-Induced Interleukin-12 Production by Activation of Repressor Element GA-12 through Hyperactivation of the ERK Pathway
S. Saito, M. Matsuura, Y. Hirai
2006Clinical and Vaccine Immunology38 citations Open access
Semantic Scholar
Indene Compounds Synthetically Derived from Vitamin D Have Selective Antibacterial Action on Helicobacter pylori.
Kiyofumi Wanibuchi, Kouichi Hosoda, M. Ihara, K. Tajiri +5 more
2018Lipids37 citations
Semantic Scholar
Phosphatidylethanolamine of Helicobacter pylori Functions as a Steroid-Binding Lipid in the Assimilation of Free Cholesterol and 3β-Hydroxl Steroids into the Bacterial Cell Membrane
H. Shimomura, Kouichi Hosoda, S. Hayashi, K. Yokota +1 more
2012Journal of Bacteriology34 citations Open access
Semantic Scholar
Passive oral immunization by egg yolk immunoglobulin (IgY) to Vibrio cholerae effectively prevents cholera.
Kazuyuki Hirai, H. Arimitsu, Koji Umeda, K. Yokota +6 more
2010Acta Medica Okayama34 citations
Semantic Scholar
Immune response in Helicobacter pylori-induced low-grade gastric-mucosa-associated lymphoid tissue (MALT) lymphoma.
R. Yamasaki, K. Yokota, H. Okada, S. Hayashi +6 more
2004Journal of Medical Microbiology33 citations Open access
Semantic Scholar
Analysis of Immunoglobulin A Antibodies toHelicobacter pylori in Serum and Gastric Juice in Relation to Mucosal Inflammation
S. Hayashi, T. Sugiyama, K. Yokota, H. Isogai +5 more
1998Clinical Diagnostic Laboratory Immunology32 citations Open access
Semantic Scholar
NK1.1+ cells regulate neutrophil migration in mice with Acinetobacter baumannii pneumonia
Takahiro Tsuchiya, N. Nakao, Shigeo Yamamoto, Y. Hirai +2 more
2012Microbiology and immunology31 citations
Semantic Scholar
Steroids mediate resistance to the bactericidal effect of phosphatidylcholines against Helicobacter pylori.
H. Shimomura, Kouichi Hosoda, S. Hayashi, K. Yokota +2 more
2009FEMS Microbiology Letters31 citations
Semantic Scholar
Helicobacter pylori heat-shock protein 60 induces production of the pro-inflammatory cytokine IL8 in monocytic cells.
Song-Nan Lin, K. Ayada, Ying-Xin Zhao, K. Yokota +8 more
2005Journal of Medical Microbiology29 citations Open access
Semantic Scholar
Unusual Interaction of a Lipopolysaccharide Isolated from Burkholderia cepacia with Polymyxin B
H. Shimomura, M. Matsuura, S. Saito, Y. Hirai +2 more
2003Infection and Immunity29 citations Open access
Semantic Scholar
Organic Nutrient-dependent Degradation of Branched Nonylphenol by Sphingomonas sp. YT Isolated from a River Sediment Sample
Y. P. de Vries, Y. Takahara, Y. Ikunaga, Yuuji Ushiba +6 more
200125 citations Open access
Semantic Scholar
Adaptational Changes of Fatty Acid Composition and the Physical State of Membrane Lipids Following the Change of Growth Temperature in Yersinia enterocolitica
E. Nagamachi, Sei‐ichiro Shibuya, Y. Hirai, O. Matsushita +2 more
1991Microbiology and immunology25 citations Open access
Semantic Scholar
Heat Shock Protein Produced by Helicobacter pylori
K. Yokota, Y. Hirai, M. Haque, S. Hayashi +6 more
1994Microbiology and immunology23 citations
Semantic Scholar
Studies on Osmotic Stability of Liposomes Prepared with Bacterial Membrane Lipids by Carboxyfluorescein Release
E. Nagamachi, Y. Hirai, K. Tomochika, Y. Kanemasa
1992Microbiology and immunology21 citations Open access
Semantic Scholar
Anabolic utilization of steroid hormones in Helicobacter pylori.
Kouichi Hosoda, H. Shimomura, S. Hayashi, K. Yokota +2 more
2009FEMS Microbiology Letters20 citations Open access
Semantic Scholar
Non-standard biological activities of lipopolysaccharide from Helicobacter pylori.
N. Matsuyama, T. Kirikae, Fumiko Kirikae, M. Hashimoto +5 more
2001Journal of Medical Microbiology20 citations Open access
Semantic Scholar
Biological activities of lipopolysaccharides of Proteus spp. and their interactions with polymyxin B and an 18-kDa cationic antimicrobial protein (CAP18)-derived peptide.
A. St. Świerzko, T. Kirikae, F. Kirikae, M. Hirata +6 more
2000Journal of Medical Microbiology20 citations Open access
Semantic Scholar
Comparison of hand hygiene procedures for removing Bacillus cereus spores.
Teppei Sasahara, S. Hayashi, Kouichi Hosoda, Y. Morisawa +1 more
2014Biocontrol Science18 citations Open access
Semantic Scholar
Lipopolysaccharides From Non-Helicobacter pylori Gastric Bacteria Potently Stimulate Interleukin-8 Production in Gastric Epithelial Cells
Natsumi Miyata, Y. Hayashi, S. Hayashi, Kiichi Sato +3 more
2019Clinical and Translational Gastroenterology17 citations Open access
Semantic Scholar
Detoxification of 7-Dehydrocholesterol Fatal to Helicobacter pylori Is a Novel Role of Cholesterol Glucosylation
H. Shimomura, Kouichi Hosoda, D. McGee, S. Hayashi +2 more
2012Journal of Bacteriology17 citations Open access
Semantic Scholar
Antibacterial activity of a novel synthetic progesterone species carrying a linoleic acid molecule against Helicobacter pylori and the hormonal effect of its steroid on a murine macrophage-like cell line.
Avarzed Amgalanbaatar, H. Shimomura, Kouichi Hosoda, S. Hayashi +2 more
2014Journal of Steroid Biochemistry and Molecular Biology16 citations
Semantic Scholar
Evaluation of procedures for decontaminating ultrasound probes
S. Hayashi, H. Koibuchi, N. Taniguchi, Y. Hirai
2011Journal of medical ultrasonics16 citations
Semantic Scholar
Immunoglobulin G1 antibody response to Helicobacter pylori heat shock protein 60 is closely associated with low-grade gastric mucosa-associated lymphoid tissue lymphoma
E. Ishii, K. Yokota, T. Sugiyama, Y. Fujinaga +6 more
200215 citations
Semantic Scholar
Modification of Helicobacter pylori adhesion to human gastric epithelial cells by antiadhesion agents.
S. Hayashi, T. Sugiyama, M. Asaka, K. Yokota +2 more
1998Digestive Diseases and Sciences12 citations
Semantic Scholar
BRIEF COMMUNICATION: A rapid and simple method to quantify Helicobacter pylori adhesion to human gastric MKN‐28 cells
S. Hayashi, T. Sugiyama, A. Yachi, K. Yokota +3 more
1997Journal of Gastroenterology and Hepatology12 citations
Semantic Scholar
Unique responses of Helicobacter pylori to exogenous hydrophobic compounds.
H. Shimomura, Kiyofumi Wanibuchi, Kouichi Hosoda, Avarzed Amgalanbaatar +3 more
2020Chemistry and Physics of Lipids11 citations Open access
Semantic Scholar
Combined Effect of Rebamipide and Ecabet Sodium on Helicobacter pylori Adhesion to Gastric Epithelial Cells
S. Hayashi, T. Sugiyama, K. Yokota, H. Isogai +5 more
2000Microbiology and immunology11 citations Open access
Semantic Scholar
Quantitative detection of secretory immunoglobulin A to Helicobacter pylori in gastric juice: Antibody capture enzyme‐linked immunosorbent assay
S. Hayashi, T. Sugiyama, Kazunari Hisano, T. Awakawa +8 more
1996Journal of clinical laboratory analysis (Print)11 citations Open access
Semantic Scholar
Human intestinal spirochetosis in an immunocompromised host: evaluation of eradication therapy by endoscopy, histopathology and bacteriology
T. Takezawa, S. Hayashi, Y. Adachi, K. Sunada +7 more
2012Clinical Journal of Gastroenterology10 citations
Semantic Scholar
Antibacterial effect of indene on Helicobacter pylori correlates with specific interaction between its compound and dimyristoyl-phosphatidylethanolamine.
Kiyofumi Wanibuchi, M. Takezawa, Kouichi Hosoda, Avarzed Amgalanbaatar +9 more
2020Chemistry and Physics of Lipids9 citations
Semantic Scholar
Effect of ultrasonic irradiation on bacterial biofilms
H. Koibuchi, Yasutomo Fujii, Y. Hirai, T. Mochizuki +4 more
2017Journal of medical ultrasonics8 citations
Semantic Scholar
Induction of Mucosal Humoral Immunity by Subcutaneous Injection of an Oil-emulsion Vaccine against Salmonella enterica subsp. enterica serovar Enteritidis in Chickens
Yuu Ishida, Eishi Sakai, Katsuo Sato, Einori Sugiyama +5 more
2018Food Safety7 citations Open access
Semantic Scholar
Interaction of Helicobacter pylori Cell Membrane with Non-Esterified Cholesterol and Other Steroids
H. Shimomura, Kouichi Hosoda, Y. Hirai
20137 citations Open access
Semantic Scholar
Successful treatment of serial opportunistic infections including disseminated nocardiosis and cryptococcal meningitis in a patient with ANCA-associated vasculitis.
Kana Iwazu, Y. Iwazu, Shin-ichi Takeda, T. Akimoto +7 more
2012Internal medicine7 citations Open access
Semantic Scholar
Comparison of methods for evaluating bacterial contamination of ultrasound probes
H. Koibuchi, S. Hayashi, K. Kotani, Yasutomo Fujii +3 more
2009Journal of medical ultrasonics7 citations
Semantic Scholar
The interaction of bile acids and Helicobacter pylori
Y. Hirai
1999Journal of gastroenterology7 citations
Semantic Scholar
A short review, effect of dimethyl-β-cyclodextrin on the interaction between Helicobacter pylori and steroidal compounds
Kiyofumi Wanibuchi, Kouichi Hosoda, Avarzed Amgalanbaatar, Y. Hirai +2 more
2021Heliyon6 citations Open access
Semantic Scholar
Antibacterial effects of tannins in children and adults.
Shunji Hayashi, K. Funatogawa, Y. Hirai, R. Watson +1 more
20086 citations
Semantic Scholar

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S. Hayashi×23
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S. Hayashi — researcher profile on SciRah
H. Shimomura×18
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H. Shimomura — researcher profile on SciRah
K. Oguma×13
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K. Oguma — researcher profile on SciRah
K. Yokota×13
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Kouichi Hosoda — researcher profile on SciRah

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K. Yokota — researcher profile on SciRah

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T. Sugiyama — researcher profile on SciRah

Kiyofumi Wanibuchi×5

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Kiyofumi Wanibuchi — researcher profile on SciRah

Avarzed Amgalanbaatar×5

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Avarzed Amgalanbaatar — researcher profile on SciRah

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N. Fujii — researcher profile on SciRah

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H. Masui — researcher profile on SciRah

Takashi Takahashi×4

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Takashi Takahashi — researcher profile on SciRah