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Ken Okai · SciRah

Researcher profile · Semantic Scholar

Ken Okai

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Ken Okai — researcher profile on SciRah

h-index: 13
Works: 42
Citations: 729

Most-cited papers

Dysbiosis of oral microbiota and its association with salivary immunological biomarkers in autoimmune liver disease
K. Abe, A. Takahashi, M. Fujita, Hiromichi Imaizumi +3 more
2018PLoS ONE100 citations Open access
Semantic Scholar
Liver dysfunction in patients with systemic lupus erythematosus.
A. Takahashi, K. Abe, R. Saito, H. Iwadate +8 more
2013Internal medicine95 citations
Semantic Scholar
Skeletal muscle volume loss during transarterial chemoembolization predicts poor prognosis in patients with hepatocellular carcinoma
M. Fujita, A. Takahashi, M. Hayashi, Ken Okai +2 more
2019Hepatology Research55 citations
Semantic Scholar
Simple Resistance Exercise helps Patients with Non-alcoholic Fatty Liver Disease
A. Takahashi, K. Abe, K. Usami, Hiromichi Imaizumi +6 more
2015International Journal of Sports Medicine50 citations
Semantic Scholar
Association between sarcopenia and osteoporosis in chronic liver disease
M. Hayashi, K. Abe, M. Fujita, Ken Okai +2 more
2018Hepatology Research45 citations
Semantic Scholar
Reduced brain activity in female patients with non-alcoholic fatty liver disease as measured by near-infrared spectroscopy
A. Takahashi, Soichi Kono, Akira Wada, Sachie Oshima +8 more
2017PLoS ONE38 citations Open access
Semantic Scholar
Interleukin-21 plays a critical role in the pathogenesis and severity of type I autoimmune hepatitis
K. Abe, A. Takahashi, Hiromichi Imaizumi, M. Hayashi +4 more
2016SpringerPlus33 citations Open access
Semantic Scholar
Autoantibodies by line immunoassay in patients with primary biliary cirrhosis.
Hironobu Saito, A. Takahashi, K. Abe, Ken Okai +4 more
2012Fukushima Journal of Medical Science33 citations Open access
Semantic Scholar
Centrilobular necrosis in acute presentation of Japanese patients with type 1 autoimmune hepatitis.
K. Abe, Y. Kanno, Ken Okai, F. Katsushima +5 more
2012World Journal of Hepatology31 citations Open access
Semantic Scholar
Simple resistance exercise decreases cytokeratin 18 and fibroblast growth factor 21 levels in patients with nonalcoholic fatty liver disease
A. Takahashi, K. Abe, M. Fujita, M. Hayashi +2 more
2020Medicine27 citations Open access
Semantic Scholar
Gut and oral microbiota in autoimmune liver disease.
K. Abe, M. Fujita, M. Hayashi, Ken Okai +2 more
2019Fukushima Journal of Medical Science22 citations Open access
Semantic Scholar
Association between the Serum Sodium Levels and the Response to Tolvaptan in Liver Cirrhosis Patients with Ascites and Hyponatremia
M. Hayashi, K. Abe, M. Fujita, Ken Okai +2 more
2018Internal medicine22 citations Open access
Semantic Scholar
Simple Resistance Exercise for 24 Weeks Decreases Alanine Aminotransferase Levels in Patients with Non-Alcoholic Fatty Liver Disease
A. Takahashi, Hiromichi Imaizumi, M. Hayashi, Ken Okai +4 more
2017Sports Medicine International Open19 citations Open access
Semantic Scholar
Interleukin‐33/ST2‐Mediated Inflammation Plays a Critical Role in the Pathogenesis and Severity of Type I Autoimmune Hepatitis
K. Abe, A. Takahashi, M. Fujita, M. Hayashi +3 more
2019Hepatology Communications13 citations Open access
Semantic Scholar
Endogenous Endophthalmitis Associated with Pyogenic Liver Abscess Caused by Klebsiella pneumoniae
M. Fujita, A. Takahashi, Hiromichi Imaizumi, M. Hayashi +3 more
2019Internal medicine12 citations Open access
Semantic Scholar
The utility of IgG, IgM, and CD138 immunohistochemistry in the evaluation of autoimmune liver diseases
K. Abe, A. Takahashi, Y. Nozawa, Hiromichi Imaizumi +5 more
2014Medical Molecular Morphology11 citations
Semantic Scholar
Acute kidney injury after platinum-based transcatheter arterial chemoembolization and transarterial infusion chemotherapy in patients with hepatocellular carcinoma.
M. Hayashi, K. Abe, M. Fujita, Ken Okai +2 more
2020Japanese Journal of Clinical Oncology10 citations
Semantic Scholar
A novel occludin-targeting monoclonal antibody prevents hepatitis C virus infection in vitro
Ken Okai, Naoki Ichikawa-Tomikawa, Akira C Saito, Tetsuya Watabe +7 more
2018OncoTarget10 citations Open access
Semantic Scholar
Hepatitis B Virus Reactivation in a Patient with Nonalcoholic Steatohepatitis 41 Months after Rituximab-containing Chemotherapy
M. Hayashi, K. Abe, M. Fujita, Ken Okai +2 more
2018Internal medicine10 citations Open access
Semantic Scholar
Utility of magnetic resonance elastography for predicting ascites in patients with chronic liver disease
K. Abe, A. Takahashi, Hiromichi Imaizumi, M. Hayashi +6 more
2018Journal of Gastroenterology and Hepatology10 citations
Semantic Scholar
Reduced frontal activation during verbal fluency task in chronic hepatitis C patients with interferon‐based therapy as measured by near‐infrared spectroscopy
K. Abe, Akira Wada, Sachie Oshima, Soichi Kono +8 more
2017Hepatology Research10 citations
Semantic Scholar
Firing properties of neurones in the laterodorsal hypothalamic area during sleep and wakefulness
Y. Koyama, T. Kodama, Kazumi Takahashi, Ken Okai +1 more
2002Psychiatry and Clinical Neurosciences10 citations Open access
Semantic Scholar
Changes in serum levels of leucine‐rich α2‐glycoprotein predict prognosis in primary biliary cholangitis
M. Hayashi, K. Abe, M. Fujita, Ken Okai +2 more
2019Hepatology Research9 citations
Semantic Scholar
Two cases of liver cirrhosis treated with lusutrombopag before partial splenic embolization.
M. Fujita, K. Abe, M. Hayashi, Ken Okai +2 more
2017Fukushima Journal of Medical Science9 citations Open access
Semantic Scholar
Drug-induced liver injury with autoimmune features complicated with hemophagocytic syndrome
M. Hayashi, K. Abe, Hiromichi Imaizumi, Ken Okai +3 more
2016Clinical Journal of Gastroenterology8 citations
Semantic Scholar
Serum levels of a cell death biomarker predict the development of cirrhosis-related conditions in primary biliary cholangitis
M. Hayashi, K. Abe, M. Fujita, Ken Okai +3 more
2018Medical Molecular Morphology7 citations
Semantic Scholar
Drug-induced Liver Injury with HHV-6 Reactivation.
M. Fujita, A. Takahashi, Hiromichi Imaizumi, M. Hayashi +5 more
2015Internal medicine7 citations Open access
Semantic Scholar
Case of idiopathic portal hypertension complicated with autoimmune hepatitis
K. Abe, A. Takahashi, Yukio Sato, Ken Okai +5 more
2013Hepatology Research7 citations
Semantic Scholar
[A case of methotrexate-associated lymphoproliferative disorder diagnosed by liver biopsy].
Mika Takasumi, Ken Okai, T. Asano, Y. Kanno +6 more
2015Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology6 citations
Semantic Scholar
Huge Hepatocellular Carcinoma Treated with Radical Hepatectomy after Drug-eluting Bead Transarterial Chemoembolization
M. Fujita, Ken Okai, M. Hayashi, K. Abe +6 more
2019Internal medicine4 citations Open access
Semantic Scholar
Paralytic Ileus due to Superior Mesenteric Venous Thrombosis after Transarterial Injection for Hepatocellular Carcinoma.
Y. Nakajima, A. Takahashi, Y. Kanno, N. Gunji +6 more
2016Internal medicine3 citations Open access
Semantic Scholar
Autologous blood transfusion for hemodialysis patients: A case report and review of clinical reports and therapeutic features.
Yuhko Suzuki, Ken Okai, Hironori Ohashi, S. Aota +6 more
2015Transfusion and Apheresis Science2 citations
Semantic Scholar
A case of hepatic epithelioid hemangioendothelioma showing rapid growth in a short term
Ken Okai, A. Takahashi, K. Abe, Y. Kanno +3 more
20142 citations Open access
Semantic Scholar
De Novo Hepatitis B Virus Infection
Ken Okai, K. Abe, A. Takahashi, H. Ohira
2019Gastrointestinal and Hepatic Manifestations of Rheumatic Diseases1 citations
Semantic Scholar
Contrast uptake in primary hepatic angiosarcoma on gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging in the hepatobiliary phase
M. Hayashi, Satoshi Kawana, Hirofumi Sekino, K. Abe +8 more
2018World Journal of Hepatology1 citations Open access
Semantic Scholar
Hepatocellular carcinoma that relapsed 54 months after living donor liver transplantation.
Y. Kanno, A. Takahashi, K. Abe, T. Takagi +10 more
2012Internal medicine1 citations Open access
Semantic Scholar
1264 ESTROGEN DEFICIENCY AND LIPOPOLYSACCHARIDE PLAY ROLES IN THE PATHOGENESIS OF NON-ALCOHOLIC STEATOHEPATITIS (NASH)
A. Takahashi, Ken Okai, F. Katsushima, K. Monoe +4 more
20121 citations
Semantic Scholar
Title Autoantibodies by line immunoassay in patients with primarybiliary cirrhosis
Hironobu Saito, A. Takahashi, K. Abe, Ken Okai +4 more
20170 citations
Semantic Scholar
A case of liver abscess with systemic infection caused by Fusobacterium.
N. Matsuoka, Ken Okai, A. Takahashi, K. Abe +5 more
2016Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology0 citations
Semantic Scholar
Inhibitor of hepatitis c virus infection
H. Chiba, Naoki Tomikawa, H. Ohira, Ken Okai
20160 citations
Semantic Scholar
P811 SLEEP DISORDERS IN PATIENTS WITH NON-ALCOHOLIC FATTY LIVER DISEASE
Hiromichi Imaizumi, A. Takahashi, M. Hayashi, Ken Okai +6 more
20140 citations
Semantic Scholar
A case of acute-onset autoimmune hepatitis that showed false positive for IgM-HA antibody
Ken Okai, E. Kita, Nobuo Matsuhashi, Hidehiko Matsuoka +7 more
20130 citations Open access
Semantic Scholar

Frequent co-authors

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H. Ohira×40
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H. Ohira — researcher profile on SciRah
A. Takahashi×38
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A. Takahashi — researcher profile on SciRah
K. Abe×37
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K. Abe — researcher profile on SciRah
M. Hayashi×28
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M. Hayashi — researcher profile on SciRah

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Y. Kanno — researcher profile on SciRah

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M. Fujita — researcher profile on SciRah

Hiromichi Imaizumi×15

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Hiromichi Imaizumi — researcher profile on SciRah

Hiroshi Watanabe×8

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Hiroshi Watanabe — researcher profile on SciRah

F. Katsushima×7

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Hironobu Saito×6

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Kyoko Monoe — researcher profile on SciRah

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Nobuo Tanji — researcher profile on SciRah