2025/08/22 更新

写真a

タナカ シンゴ
田中 信悟
所属
医学部 感染制御・臨床検査医学講座 講師
職名
講師
外部リンク

研究分野

  • ライフサイエンス / 消化器内科学

論文

  • Analytical and Clinical Validation of a Plasma Fibroblast Growth Factor 21 ELISA Kit Using an Automated Platform in Steatotic Liver Disease

    Makito Tanaka, Shingo Tanaka, Ryo Kobayashi, Ryosei Murai, Satoshi Takahashi

    Biomolecules   15 ( 6 )   877 - 877   2025年6月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:MDPI AG  

    Steatotic liver disease is a global health challenge that requires reliable and noninvasive diagnostic biomarkers. This research aimed to validate the analytical and clinical performance of a fibroblast growth factor 21 (FGF21) enzyme-linked immunosorbent assay (ELISA) kit using an automated immunoassay analyzer. Plasma FGF21 levels were measured using a commercial ELISA kit on an automated immunoassay analyzer. Validation included intra- and inter-assay precision, dilution linearity, spike recovery, lower limit of quantification (LLOQ), interference testing, and sample stability analysis. Clinical evaluation involved 97 patients who underwent abdominal ultrasound-based attenuation imaging for the diagnosis of hepatic steatosis. The assay demonstrated high analytical precision, with intra- and inter-assay coefficients of variation <15% and an LLOQ of 3.260 pg/mL. Dilution linearity, spike recovery, and interference tests confirmed the reliability of the assay, whereas stability tests highlighted the minimal effect of freeze-thaw cycles and storage conditions. Clinically, FGF21 levels correlated with attenuation coefficient (r = 0.44). Diagnostic performance indicated 84% sensitivity and 81% specificity at defined FGF21 thresholds for the diagnosis of hepatic steatosis. This research confirmed the reliable analytical and clinical performance of the FGF21 ELISA kit, reinforcing its potential as a diagnostic biomarker of hepatic steatosis.

    DOI: 10.3390/biom15060877

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  • Clinical utility of in-hospital qPCR for cytomegalovirus detection: a single-center analysis

    Mai Oikawa, Shingo Tanaka, Takashi Kondo, Makito Tanaka, Ryo Kobayashi, Ryosei Murai, Satoshi Iyama, Satoshi Takahashi

    Journal of Infection and Chemotherapy   31 ( 6 )   102715 - 102715   2025年6月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier BV  

    DOI: 10.1016/j.jiac.2025.102715

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  • Efficient implementation of hepatitis B surface antigen confirmatory neutralization tests. 国際誌

    Hitoshi Yonezawa, Shingo Tanaka, Makito Tanaka, Ryo Kobayashi, Satoshi Takahashi

    Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy   30 ( 1 )   29 - 33   2024年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    INTRODUCTION: To prevent misreporting of false positives in the hepatitis B surface antigen (HBsAg) assay, it is recommended to confirm the low-positive cases with neutralization tests. However, currently not many facilities are implementing this due to the additional cost. The aim of this study was to clarify the risk factors for false positives in the high-sensitivity HBsAg quantitative tests to reduce the neutralization tests. METHODS: In this retrospective cohort study, we analyzed 47,305 patients who had their HBsAg value measured at Sapporo Medical University Hospital between November 2016 and March 2022. The patients eligible for the neutralization tests were those with HBsAg values between 0.005 and 1.000, even after reexamination by high-speed centrifugation. RESULTS: HBsAg quantitative tests were performed in 71,475 tests. Of these, 817 tests and 376 patients were subjected to neutralization tests. Of the patients who met the criteria, 329 were included in this study. Fifty-seven cases (17%) had negative results in the neutralization tests, suggesting false positives for the HBsAg assay. Multivariate analysis showed that younger age (adjusted odds ratio [aOR] 6.57), female sex (aOR 2.32), lower HBsAg values (aOR 59.6), and reagent improvement (aOR 2.06) were independent risk factors for false positives. The false-positive rate was actually high at 33.1% in the HBsAg range of 0.005-0.049 IU/mL and at 1.2% in the range above 0.050 IU/mL. CONCLUSIONS: Confirmatory neutralization tests should be performed at least in the range of 0.005-0.049 IU/mL where quantification is possible with a higher-sensitivity assay.

    DOI: 10.1016/j.jiac.2023.09.007

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  • 血小板数の緊急連絡値(パニック値)報告における対象患者の範囲および繰り返し報告についての検討

    田中信悟, 米澤仁, 村井良精, 井山諭, 高橋聡

    日本臨床検査医学会誌   72 ( 6 )   2024年

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  • Synergistic antitumor effect of histone deacetylase class IIa inhibitor with lenvatinib in hepatocellular carcinoma. 国際誌

    Ryo Ito, Koji Miyanishi, Tomohiro Kubo, Kota Hamaguchi, Takahiro Osuga, Shingo Tanaka, Hiroyuki Ohnuma, Kazuyuki Murase, Kohichi Takada, Minoru Nagayama, Yasutoshi Kimura, Toru Mizuguchi, Ichiro Takemasa, Junji Kato

    Hepatology international   17 ( 3 )   735 - 744   2023年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Histone deacetylase (HDAC) class I and IIa are highly expressed in hepatocellular carcinoma (HCC) and associated with decreased survival. However, clinically used pan and class I inhibitors have serious adverse events. In this study, we assessed the antitumor effects and tolerability of class IIa HDAC inhibitor (HDACI) with lenvatinib, which is a standard therapy for HCC. METHODS AND RESULT: Combination therapy with class IIa HDACI and lenvatinib exerted synergistic antitumor effect in human HCC cell lines. In mouse models, this therapy showed significant antitumor effects, and few adverse events occurred. In immunoblotting, the expression of fibroblast growth factor receptor 4 (FGFR4) and fibroblast growth factor 19 (FGF19) was high in cell lines that showed a high antitumor effect. In addition, class IIa HDACI administration decreased the expression of FGFR4. In the small interfering RNA (siRNA) analysis, knockdown of HDAC9, which is an isoform of HDAC class IIa, reduced the expression of FGFR4 and induced apoptosis. Immunohistochemistry of human clinical specimens showed a positivity rate of 32% for FGFR4 and 84% for HDAC9 in HCC, and all FGFR4-positive patients were HDAC9 positive. CONCLUSION: Class IIa HDACI and lenvatinib combination therapy induces apoptosis by downregulating FGFR4 and blocking the FGFR signaling in FGFR4-positive HCC cell lines and has demonstrated synergistic antitumor effects and safety. This combination therapy overcomes the problems of conventional therapies and will be beneficial for FGFR4-positive HCC patients.

    DOI: 10.1007/s12072-023-10484-2

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  • Effect of albumin measurement methods on the albumin-bilirubin grade. 国際誌

    Makito Tanaka, Shingo Tanaka, Ema Suzuki, Ryo Kobayashi, Satoshi Takahashi

    Annals of clinical biochemistry   60 ( 2 )   100 - 108   2023年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Albumin-bilirubin (ALBI) grade is an index of liver function based on total bilirubin (T-BIL) and albumin levels, and its usefulness has been widely reported. This study aimed to investigate the effect of different methods of measuring T-BIL and albumin levels on the ALBI grade in patients with liver disease. METHODS: In total, 170 patients from our hospital were included in this study. Correlations between T-BIL levels measured using the vanadate oxidation and enzymatic methods were analysed. Similarly, a correlation analysis of albumin levels between the bromocresol green (BCG) and modified bromocresol purple (BCP) methods was performed. Additionally, the ALBI grade was calculated for patients with liver disease, and the differences between each method of albumin measurement were compared. RESULTS: No differences were observed in the measured T-BIL values between the two methods. Contrastingly, the albumin levels of 100 random samples and 70 liver disease patients obtained using the modified BCP method were significantly lower than those measured using the BCG method. The rate of change in the modified ALBI grade between the BCG and BCP methods was 25.7%. CONCLUSIONS: Caution should be taken when comparing ALBI grades with those measured by other facilities because the method of albumin measurement can affect the ALBI grade. Standardization of albumin measurement is needed worldwide.

    DOI: 10.1177/00045632221143685

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  • Association between Hepatic Oxidative Stress Related Factors and Activation of Wnt/β-Catenin Signaling in NAFLD-Induced Hepatocellular Carcinoma. 国際誌

    Kota Hamaguchi, Koji Miyanishi, Takahiro Osuga, Shingo Tanaka, Ryo Ito, Hiroki Sakamoto, Tomohiro Kubo, Hiroyuki Ohnuma, Kazuyuki Murase, Kohichi Takada, Minoru Nagayama, Yasutoshi Kimura, Toru Mizuguchi, Ichiro Takemasa, Junji Kato

    Cancers   14 ( 9 )   2022年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We investigated the association between iron overload, oxidative stress (8-oxo-7,8-dihydroguanine: 8-oxo-dG scores), Wnt/β-catenin pathway activation (expression of glutamine synthetase: GS), and tumor hyperintensity in the Gd-EOB-DTPA-enhanced MRI hepatobiliary phase (relative enhancement ratio: RER). This was a retrospective analysis of 94 hepatocellular carcinoma (HCC) patients who underwent surgical resection. In HBV-, HCV-, and alcohol-associated HCC, serum ferritin levels in the high and low RER groups were equivalent. In contrast, ferritin levels were elevated in the 'high RER' group of patients with nonalcoholic fatty liver disease (NAFLD)-HCC. As predictors of GS positivity, high RER had a sensitivity of 57.2% and a specificity of 100%. High serum ferritin had a sensitivity of 85.7% and a specificity of 85.7%. All cases with serum ferritin ≥275.5 ng/mL and high RER were 8-oxo-dG- and iron staining-positive. Additionally, GS positivity was seen in all cases with "serum ferritin levels above the upper limits or iron staining-positive" and '8-oxo-dG high' cases. Therefore, combining serum ferritin levels with RER may increase the accuracy with which activated Wnt/β-catenin signaling is predicted in NAFLD-HCC. We suggest that 8-oxo-dG accumulates following increased oxidative stress due to hepatic tissue iron deposition; this may activate Wnt/β-catenin signaling and trigger carcinogenesis.

    DOI: 10.3390/cancers14092066

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  • A case of acute exacerbation of chronic hepatitis C during the course of adrenal Cushing's syndrome 国際誌

    Takahiro Osuga, Koji Miyanishi, Kota Hamaguchi, Shingo Tanaka, Hiroyuki Ohnuma, Kazuyuki Murase, Kohichi Takada, Junji Kato

    Clinical Case Reports   10 ( 2 )   e05337   2022年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    A 50-year-old woman with adrenal Cushing's syndrome and chronic hepatitis C developed an acute exacerbation of chronic hepatitis C before adrenectomy. After administration of glecaprevir/pibrentasvir was started, her transaminase levels normalized promptly and a rapid virological response also was achieved. Laparoscopic left adrenectomy was then performed safely.

    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ccr3.5337

    DOI: 10.1002/ccr3.5337

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  • A Case of Unresectable Combined Hepatocellular-Cholangiocarcinoma Successfully Treated with Lenvatinib. 国際誌

    Takahiro Osuga, Koji Miyanishi, Ryo Ito, Shingo Tanaka, Kota Hamaguchi, Hiroyuki Ohnuma, Kazuyuki Murase, Kohichi Takada, Minoru Nagayama, Yasutoshi Kimura, Taro Sugawara, Shintaro Sugita, Ichiro Takemasa, Tadashi Hasegawa, Junji Kato

    Case reports in oncology   15 ( 1 )   318 - 325   2022年

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    記述言語:英語  

    A 77-year-old man was referred to our hospital because of a hepatic tumor. Blood biochemistry showed elevated serum alfa-fetoprotein, protein induced by vitamin K absence-II, and carbohydrate antigen 19-9 levels. Gd-EOB-DTPA-enhanced magnetic resonance imaging revealed a 95-mm-sized tumor in liver S7. The tumor showed heterogeneous hyperintensity in the arterial phase, slightly washed out from the portal vein phase, and hypointensity in the hepatocellular phase. Post-enlargement segmental resection was performed, and the pathological diagnosis was combined hepatocellular cholangiocarcinoma. Seven months after surgery, multiple liver tumors were found, and biopsy revealed combined hepatocellular-cholangiocarcinoma. Hepatic arterial infusion chemotherapy with cisplatin was initiated. However, the patient developed a pulmonary abscess, which was treated with antibiotics. He then underwent treatment with lenvatinib, 11 months after surgery. At 8 weeks follow-up, a complete response (according to the modified Response Evaluation Criteria in Solid Tumors [RECIST]) and a partial response (RECIST version 1.1) was noted. To the best of our knowledge, thus far, only a single case of lenvatinib treatment of unresectable mixed liver cancer has been reported. In that case, lenvatinib was used as a third-line treatment. The present report is the first to describe lenvatinib as a first-line therapy for unresectable combined hepatocellular-cholangiocarcinoma, which resulted in a meaningful response. This case provides useful insights into the choice of appropriate drug treatment in this disease in the absence of randomized controlled trials of drug treatment.

    DOI: 10.1159/000523895

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  • 当院におけるアルブミン製剤の適正使用について

    田中 信悟, 村井 良精, 田中 真輝人, 北山 育実, 片山 雄貴, 木次谷 玲那, 盛合 美加子, 遠藤 明美, 淺沼 康一, 遠藤 輝夫, 高橋 聡, 加藤 淳二

    日本臨床検査医学会誌   69 ( 12 )   903 - 908   2021年12月

  • MUTYH is associated with hepatocarcinogenesis in a non-alcoholic steatohepatitis mouse model 国際誌

    Hiroki Sakamoto, Koji Miyanishi, Shingo Tanaka, Ryo Ito, Kota Hamaguchi, Akira Sakurada, Masanori Sato, Tomohiro Kubo, Takahiro Osuga, Kazuyuki Murase, Kohichi Takada, Yusaku Nakabeppu, Masayoshi Kobune, Junji Kato

    Scientific Reports   11 ( 1 )   3599 - 3599   2021年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Springer Science and Business Media LLC  

    <title>Abstract</title>Non-alcoholic steatohepatitis (NASH)-related HCC is associated with oxidative stress. However, the mechanisms underlying the development of NASH-related HCC is unclear. MUTYH is one of the enzymes that is involved in repair of oxidative DNA damage. The aim of this study was to investigate the association between MUTYH and NASH-related hepatocarcinogenesis. MUTYH wild-type (<italic>Mutyh</italic><sup>+/+</sup>), heterozygous (<italic>Mutyh</italic><sup>+/−</sup>), and MUTYH-null (<italic>Mutyh</italic><sup>−/−</sup>) mice were fed a high-fat high-cholesterol (HFHC) diet or HFHC + high iron diet (20 mice per group) for 9 months. Five of 20 <italic>Mutyh</italic><sup>−/−</sup> mice fed an HFHC + high iron diet developed liver tumors, and they developed more liver tumors than other groups (especially vs. Mutyh<sup>+/+</sup> fed an HFHC diet, <italic>P</italic> = 0.0168). Immunohistochemical analysis revealed significantly higher accumulation of oxidative stress markers in mice fed an HFHC + high iron diet. The gene expression profiles in the non-tumorous hepatic tissues were compared between wild-type mice that developed no liver tumors and MUTYH-null mice that developed liver tumors. Gene Set Enrichment Analysis identified the involvement of the Wnt/β-catenin signaling pathway and increased expression of <italic>c-Myc</italic> in MUTYH-null liver. These findings suggest that MUTYH deficiency is associated with hepatocarcinogenesis in patients with NASH with hepatic iron accumulation.

    その他リンク: http://www.nature.com/articles/s41598-021-83138-8

    DOI: 10.1038/s41598-021-83138-8

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  • Combination of psoas muscle mass index and neutrophil/lymphocyte ratio as a prognostic predictor for patients undergoing nonsurgical hepatocellular carcinoma therapy 国際誌

    Yusuke Sugama, Koji Miyanishi, Takahiro Osuga, Shingo Tanaka, Kota Hamaguchi, Ryo Ito, Hiroki Sakamoto, Tomohiro Kubo, Hiroyuki Ohnuma, Kazuyuki Murase, Kohich Takada, Masayoshi Kobune, Junji Kato

    JGH Open   5 ( 12 )   1335 - 1343   2021年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    BACKGROUND AND AIM: Reliable predictors for hepatocellular carcinoma (HCC) are urgently needed. The psoas muscle index (PMI) is a simple and rapid method for evaluating muscle atrophy. Furthermore, the neutrophil/lymphocyte ratio (NLR) is a prognostic factor that is easy to calculate in everyday clinical practice. We aimed to investigate the value of the PMI and NLR as prognostic factors for patients receiving nonsurgical HCC therapy, hepatic arterial infusion chemotherapy (HAIC), transcatheter arterial chemoembolization (TACE), or molecular targeted drugs such as sorafenib (SOR) and lenvatinib (LEN). METHODS: We enrolled 87 patients with HCC who were treated with HAIC, TACE, SOR, or LEN. The primary endpoint was overall survival (OS) with variable PMI or NLR status. For Barcelona Clinic Liver Cancer (BCLC)-B patients, useful prognostic factors were examined by comparing the OS between stratified groups. Prognostic factors including PMI and NLR were evaluated by univariate and multivariate analysis. RESULTS: Analysis of HAIC or TACE (HAIC/TACE) and SOR or LEN (SOR/LEN) patients showed significant differences in OS between low and high PMI. In patients treated with TACE, there was a significant difference in OS between low and high NLR. For BCLC-B and low PMI, the prognosis was significantly worse for SOR/LEN than for TACE, although there was no difference for high PMI, suggesting that PMI may be useful for treatment selection. In addition, the prognostic formula composed of PMI, NLR, and up-to-seven criteria developed in the present study may be useful. CONCLUSION: PMI and NLR are considered to be independent prognostic factors for HCC.

    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/jgh3.12676

    DOI: 10.1002/jgh3.12676

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  • 他の施設から得られた不規則抗体情報の有用性に関する検討

    村井 良精, 遠藤 輝夫, 盛合 美加子, 片山 雄貴, 遠藤 明美, 淺沼 康一, 田中 信悟, 高橋 聡

    医学検査   70 ( 4 )   773 - 777   2021年10月

  • Determination of reactivation rate and risk factors for Hepatitis B virus reactivation in low-positive cases: A retrospective cohort study. 国際誌

    Hitoshi Yonezawa, Shingo Tanaka, Momoko Furuya, Koji Yamada, Koichi Asanuma, Yoshihiro Fujiya, Koji Miyanishi, Satoshi Takahashi, Junji Kato

    Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy   27 ( 10 )   1454 - 1458   2021年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    INTRODUCTION: In quantitative assays for hepatitis B virus (HBV) DNA, although the amplification reaction signal is detected for low-positive cases, quantification remains challenging. HBV reactivation has been reported in many studies, but only a few have focused on HBV low-positive cases. This study aimed to determine the reactivation rate and risk factors for HBV reactivation in low-positive cases. METHODS: In this retrospective cohort study, we analyzed 7498 patients who had their HBV DNA measured at Sapporo Medical University Hospital between April 2008 and November 2020. Patient selection criteria were defined as follows: hepatitis B surface antigen was negative; HBV DNA was detectable but not quantifiable at least once. HBV DNA was monitored according to the guidelines for HBV reactivation. RESULTS: In total, 49,086 HBV DNA quantitative tests were performed. HBV DNA levels of 2578 tests were detectable but not quantifiable. Eighty patients met the criteria in this study. The median observation period was 497 days, and the 2-year reactivation rate was 15%. Ten patients had low HBV DNA positivity at baseline. Malignant lymphoma was observed in 15 patients; chemotherapy was used to treat other solid tumors in 35 patients, and immunosuppressive therapy was used in 30 patients. Multivariate analysis revealed that HBV DNA detected below the quantification level at baseline was an independent risk factor for HBV reactivation (adjusted hazard ratio 5.82; P = 0.010). CONCLUSIONS: Patients with low HBV DNA positivity, especially at baseline, are at high risk for HBV reactivation and therefore require closer monitoring.

    DOI: 10.1016/j.jiac.2021.06.009

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  • Programmed cell death ligand 1 expression in a case of poorly differentiated lymphocyte‐rich hepatocellular carcinoma 国際誌

    Ginji Omori, Takahiro Osuga, Koji Miyanishi, Kota Hamaguchi, Shingo Tanaka, Hiroyuki Ohnuma, Kazuyuki Murase, Kohichi Takada, Minoru Nagayama, Yasutoshi Kimura, Ichiro Takemasa, Yasuhiro Kikuchi, Toshihiko Torigoe, Junji Kato

    Clinical Case Reports   9 ( 9 )   e04764   2021年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    Our pathological study of a case of poorly differentiated lymphocyte-rich hepatocellular carcinoma suggested that immune checkpoint inhibitor may be an effective therapy. The histological type is an important factor in determining treatment choices.

    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ccr3.4764

    DOI: 10.1002/ccr3.4764

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  • 進行性腎細胞癌に対するスニチニブ治療に伴う左室壁運動異常の出現様式

    安井 謙司, 湯田 聡, 大井 由紀子, 橋本 浩平, 市原 浩司, 柳原 希美, 田中 信悟, 永原 大五, 高橋 聡

    臨床泌尿器科   75 ( 2 )   151 - 156   2021年2月

  • A case of hypervascular tumors in the liver and pancreas: synchronous hepatocellular carcinoma and pancreatic metastasis from renal cell carcinoma 36 years after nephrectomy 国際誌

    Hajime Nakamura, Shingo Tanaka, Koji Miyanishi, Yutaka Kawano, Takahiro Osuga, Kazuma Ishikawa, Makoto Yoshida, Hiroyuki Ohnuma, Kazuyuki Murase, Kohichi Takada, Hiroshi Yamaguchi, Minoru Nagayama, Yasutoshi Kimura, Ichiro Takemasa, Junji Kato

    Clinical Case Reports   9 ( 2 )   932 - 937   2020年12月

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    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    It is sometimes difficult to distinguish between multiple cancers and metastases using only diagnostic imaging, particularly when multiple hypervascular tumors are found in multiple organs. We present a case in which the preoperative histological evaluation was essential to determine the management of a hypervascular pancreatic tumor and liver tumor.

    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ccr3.3691

    DOI: 10.1002/ccr3.3691

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  • 高感度HBsAg測定試薬の改良による偽陽性抑制効果の検討 査読

    米澤 仁, 田中 信悟, 八鍬 佑貴, 高橋 聡

    感染症学雑誌   94 ( 1 )   97 - 101   2020年1月

  • 小型混合型肝癌の1例 査読

    大須賀 崇裕, 宮西 浩嗣, 田中 信悟, 中村 元, 坂本 拡基, 大沼 啓之, 村瀬 和幸, 高田 弘一, 小船 雅義, 加藤 淳二, 永山 稔, 木村 康利, 竹政 伊知朗, 辻脇 光洋, 長谷川 匡

    肝臓   60 ( 8 )   294 - 301   2019年8月

  • 新規ガストリン放出ペプチド前駆体測定系における測定値安定性についての検討 査読

    小林 亮, 高橋 祐輔, 田中 信悟, 柳原 希美, 淺沼 康一, 高橋 聡

    臨床化学   48 ( 3 )   232 - 238   2019年7月

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    記述言語:日本語   出版者・発行元:(一社)日本臨床化学会  

    医中誌

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  • Changes of tight junction and interleukin-8 expression using a human gastroid monolayer model of Helicobacter pylori infection. 査読 国際誌

    Takahiro Uotani, Kosuke Murakami, Tomohisa Uchida, Shingo Tanaka, Hiroyuki Nagashima, Xi-Lei Zeng, Junko Akada, Mary K Estes, David Y Graham, Yoshio Yamaoka

    Helicobacter   24 ( 3 )   e12583   2019年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: Lack of a model that mirrors Helicobacter pylori-induced gastric mucosal inflammation has hampered investigation of early host-bacterial interactions. We used an ex vivo model of human stomach, gastric epithelial organoid monolayers (gastroid monolayers) to investigate interactions of H pylori infection and the apical junctional complex and interleukin-8 (IL-8) expression. METHOD: Morphology of human antral mucosal gastroid monolayers was evaluated using histology, immunohistochemical (IHC) staining, and transmission electron microscopy (TEM). Functional and gross changes in the apical junctional complexes were assessed using transepithelial electrical resistance (TEER), cytotoxicity assays, and confocal laser scanning microscopy. IL-8 expression was evaluated by real-time quantitative PCR and ELISA. RESULTS: When evaluated by IHC and TEM, the morphology of gastroid monolayers closely resembled in vivo human stomach. Following inoculation of H pylori, TEER transiently declined (up to 51%) in an H pylori density-dependent manner. TEER recovered by 48 hours post-infection and remained normal despite continued presence and replication of H pylori. Confocal scanning microscopy showed minimal disruption of zonula occludens-1 or E-cadherin structure. IL-8 production was unchanged by infection with either CagA-positive or CagA-negative H pylori and JNK and MEK inhibitors did not suppress IL-8 production, whereas p38 and IKK inhibitor significantly did. CONCLUSION: Human gastroid monolayers provide a model for experimental H pylori infection more consistent with in vivo human infections than seen with typical gastric epithelial cell lines. This ex vivo system should lead to better understanding of H pylori host-pathogen interactions.

    DOI: 10.1111/hel.12583

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  • Successful Treatment of Hepatocellular Carcinoma with Transcatheter Arterial Chemoembolization followed by Radical Liver Transplantation in a Patient with Severe Liver Damage 査読 国際誌

    Hajime Nakamura, Yutaka Kawano, Koji Miyanishi, Kazuma Ishikawa, Tomohiro Kubo, Shingo Tanaka, Kohichi Takada, Masayoshi Kobune, Kohei Harada, Norio Kawamura, Tsuyoshi Shimamura, Hiromi Kanno-Okada, Junji Kato

    Case Reports in Oncology   12 ( 1 )   289 - 296   2019年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:S. Karger AG  

    Introduction: Liver transplantation for hepatocellular carcinoma (HCC) has been established as a curative therapy of underlying liver disease and cancer. However, the role of liver transplantation remains controversial for patients with HCC beyond Milan criteria. Case Presentation: A man in his 50s who was diagnosed as having two foci of HCC and advanced liver cirrhosis was referred to our hospital for further examination and treatment. Both foci of HCC were located in segment 8 of the liver and measured 39 and 9 mm. Endoscopy showed esophageal varices that had a high risk of bleeding. After endoscopic ligation of the esophageal varices, he underwent transcatheter arterial chemoembolization (TACE) for downstaging of the advanced HCCs. No further liver deterioration was observed after TACE, and HCC staging was successfully downstaged to within the Milan criteria. One hundred ten days after TACE, he underwent liver transplantation; at 2.5 years after transplantation, he remains alive without HCC recurrence. Discussion/Conclusion: There are only a few treatment options available for patients with advanced HCC and severe liver damage. Multidisciplinary treatment such as locoregional treatments and prophylaxis of variceal bleeding may result in tumor downstaging, enabling radical liver transplantation without further exacerbation of liver damage.

    DOI: 10.1159/000499703

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  • The role of iron in hepatic inflammation and hepatocellular carcinoma. 査読 国際誌

    Miyanishi K, Tanaka S, Sakamoto H, Kato J

    Free radical biology & medicine   133   200 - 205   2019年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.freeradbiomed.2018.07.006

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  • ルミパルスプレストPIVKAII-Nエーザイにおける基本性能の評価 査読

    古谷 桃子, 山田 浩司, 菅原 清美, 淺沼 康一, 田中 信悟, 永原 大五, 柳原 希美, 高橋 聡

    医学検査   68 ( 1 )   56 - 60   2019年1月

  • A case of small combined hepatocellular-cholangiocellular carcinoma

    Takahiro Osuga, Koji Miyanishi, Shingo Tanaka, Hajime Nakamura, Hiroki Sakamoto, Hiroyuki Onuma, Kazuyuki Murase, Koichi Takada, Masayoshi Kobune, Junji Kato, Minoru Nagayama, Yasutoshi Kimura, Ichiro Takemasa, Mitsuhiro Tsujiwaki, Tadashi Hasegawa

    Acta Hepatologica Japonica   60 ( 8 )   294 - 301   2019年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japan Society of Hepatology  

    DOI: 10.2957/kanzo.60.294

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  • An intronic single nucleotide polymorphism in the MUTYH gene is associated with increased risk for HCV-induced hepatocellular carcinoma. 査読 国際誌

    Akira Sakurada, Koji Miyanishi, Shingo Tanaka, Masanori Sato, Hiroki Sakamoto, Yutaka Kawano, Kohichi Takada, Yusaku Nakabeppu, Masayoshi Kobune, Junji Kato

    Free radical biology & medicine   129   88 - 96   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.freeradbiomed.2018.09.010

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  • Clostridium difficile肝膿瘍の1例

    松野 鉄平, 田中 信悟, 宮西 浩嗣, 河野 豊, 中村 元, 坂本 拡基, 早坂 尚貴, 石川 和真, 村瀬 和幸, 高田 弘一, 高梨 訓博, 勝木 伸一, 小船 雅義, 加藤 淳二

    肝臓   59 ( 3 )   180 - 186   2018年3月

  • Increased Duodenal Iron Absorption through Upregulation of Ferroportin 1 due to the Decrement in Serum Hepcidin in Patients with Chronic Hepatitis C. 査読

    Sato M, Miyanishi K, Tanaka S, Sakurada A, Sakamoto H, Kawano Y, Takada K, Kobune M, Kato J

    Canadian journal of gastroenterology & hepatology   2018   2154361   2018年

  • Interleukin-17C in Human Helicobacter pylori Gastritis 査読

    Shingo Tanaka, Hiroyuki Nagashima, Modesto Cruz, Tomohisa Uchida, Takahiro Uotani, Jose A. Jimenez Abreu, Varocha Mahachai, Ratha-korn Vilaichone, Thawee Ratanachu-ek, Lotay Tshering, David Y. Graham, Yoshio Yamaoka

    INFECTION AND IMMUNITY   85 ( 10 )   2017年10月

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    担当区分:筆頭著者   記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1128/IAI.00389-17

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  • Autophagy-related genes in Helicobacter pylori infection 査読

    Shingo Tanaka, Hiroyuki Nagashima, Takahiro Uotani, David Y. Graham, Yoshio Yamaoka

    HELICOBACTER   22 ( 3 )   2017年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1111/hel.12376

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  • 集学的治療により救命し得たClostridium perfringensによる肝膿瘍の2例

    久保 智洋, 河野 豊, 宮西 浩嗣, 石川 和真, 桜田 晃, 佐藤 昌則, 保木 寿文, 田村 文人, 田中 信悟, 高田 弘一, 小船 雅義, 加藤 淳二

    肝臓   58 ( 2 )   105 - 114   2017年2月

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    記述言語:日本語   出版者・発行元:(一社)日本肝臓学会  

    DOI: 10.2957/kanzo.58.105

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  • Prostate stem cell antigen gene TT genotype and development of intestinal metaplasia in Helicobacter pylori infection 査読

    Takahiro Uotani, Mitsushige Sugimoto, Hitomi Ichikawa, Shingo Tanaka, Hiroyuki Nagashima, Tomohisa Uchida, David Y. Graham, Yoshio Yamaoka

    JOURNAL OF DIGESTIVE DISEASES   17 ( 1 )   20 - 27   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1111/1751-2980.12309

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  • Increased duodenal iron absorption through up-regulation of divalent metal transporter 1 from enhancement of iron regulatory protein 1 activity in patients with nonalcoholic steatohepatitis 査読 国際誌

    Toshifumi Hoki, Koji Miyanishi, Shingo Tanaka, Kohichi Takada, Yutaka Kawano, Akira Sakurada, Masanori Sato, Tomohiro Kubo, Tsutomu Sato, Yasushi Sato, Rishu Takimoto, Masayoshi Kobune, Junji Kato

    HEPATOLOGY   62 ( 3 )   751 - 761   2015年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/hep.27774

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  • Prevention of hepatocellular carcinoma: Focusing on antioxidant therapy 査読 国際誌

    Koji Miyanishi, Toshifumi Hoki, Shingo Tanaka, Junji Kato

    World Journal of Hepatology   7 ( 3 )   593 - 599   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Baishideng Publishing Group Co  

    DOI: 10.4254/wjh.v7.i3.593

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  • Clinical Significance of Adjuvant Surgical Resection for Initially Unresectable Pancreatic Cancer Responsive to Arterial Infusion Chemotherapy 査読

    Tadashi Doi, Hisato Homma, Takehide Akiyama, Shinichi Mezawa, Minoru Takahashi, Motoo Ohi, Shingo Tanaka, Kazuhiro Morii, Katsuhisa Kogawa, Motoya Takeuchi, Kenichirou Hirata, Satoshi Hirano

    HEPATO-GASTROENTEROLOGY   61 ( 131 )   828 - 833   2014年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.5754/hge13857

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  • アデホビル長期投与中にFanconi症候群による低リン血性骨軟化症を発症したB型慢性肝炎の1例

    石川 和真, 宮西 浩嗣, 保木 寿文, 田村 文人, 河野 豊, 高田 弘一, 田中 信悟, 櫻田 晃, 佐藤 康史, 佐藤 勉, 林 毅, 瀧本 理修, 小船 雅義, 加藤 淳二

    肝臓   55 ( 3 )   162 - 169   2014年3月

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    記述言語:日本語   出版者・発行元:(一社)日本肝臓学会  

    DOI: 10.2957/kanzo.55.162

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  • Increased hepatic oxidative DNA damage in patients with nonalcoholic steatohepatitis who develop hepatocellular carcinoma. 査読

    Shingo Tanaka, Koji Miyanishi, Masayoshi Kobune, Yutaka Kawano, Toshifumi Hoki, Tomohiro Kubo, Tsuyoshi Hayashi, Tsutomu Sato, Yasushi Sato, Rishu Takimoto, Junji Kato

    Journal of gastroenterology   48 ( 11 )   1249 - 58   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND: The rate of onset of hepatocellular carcinoma (HCC) in patients with nonalcoholic steatohepatitis (NASH) has been reported recently to be comparable to that of patients with chronic hepatitis C. However, the precise mechanism contributing to carcinogenesis in the former remains unclear. Although increased oxidative stress is presumed to play a role in carcinogenesis in patients with NASH, this relationship remains to be directly proven. In this study, we investigated the involvement of oxidative DNA damage in hepatocarcinogenesis in patients with NASH. METHODS: Patients with nonalcoholic fatty liver disease who were treated at our university hospital were eligible for enrolment in the study(n = 49). The study cohort included 30 patients with NASH without HCC (NASH without HCC), six HCC patients with NASH (NASH-HCC), and 13 patients with simple steatosis. Quantitative immunohistochemistry with a KS-400 image analyzing system was used for 8-hydroxy-2'-deoxyguanosine (8-OHdG) detection. RESULTS: The 8-OHdG content in the liver tissue of NASH-HCC patients was significantly different from that in the other patients. The median immunostaining intensity was 8.605 in the NASH-HCC cases, which was significantly higher than that in the cases of NASH without HCC (4.845; P = 0.003). Multivariate analysis using hepatic 8-OHdG content as a factor in addition to age and fasting blood sugar revealed a significant difference in clinicopathological factors between NASH-HCC and NASH without HCC cases. Old age (P = 0.015) and high relative immunostaining intensity for intrahepatic 8-OHdG (P = 0.037) were identified as independent factors. CONCLUSIONS: 8-OHdG content in liver tissue may serve a marker of oxidative stress and could be a particularly useful predictor of hepatocarcinogenesis.

    DOI: 10.1007/s00535-012-0739-0

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  • Safety and effectiveness of low-dose lenalidomide therapy for multiple myeloma complicated with bortezomib-associated interstitial pneumonia. 査読

    Nagamachi Y, Yamauchi N, Muramatsu H, Okamoto T, Inomata H, Nozawa E, Koyama R, Ihara K, Nishisato T, Yamada H, Yano T, Tanaka S, Ono K, Kikuchi S, Kato J

    [Rinsho ketsueki] The Japanese journal of clinical hematology   54 ( 5 )   451 - 456   2013年5月

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    記述言語:日本語   出版者・発行元:The Japanese Society of Hematology  

    症例は,78歳女性。平成22年8月,近医で多発性骨髄腫(IgGκ type, stageIIIA, ISS III)と診断され,デキサメサゾン大量療法をするも効果無く,ボルテゾミブで2コース治療をされた。転居に伴い,同年11月当院入院。骨髄検査で形質細胞29.6%, IgG 5,539 mg/d<i>l</i>であった。入院時,両背部痛,軽度呼吸苦あり,胸部CTで,間質性肺炎と診断した。ステロイド投与で速やかに軽快したが,ボルテゾミブの関与を否定できなかったことから,レナリドミドによる治療を選択した。レナリドミド15 mgを2コース投与したが,間質性肺炎の再燃は認めなかった。又,形質細胞は0.4%, IgG 1,616 mg/d<i>l</i>と低下し,PRであった。白血球減少を認め,GCSFの投与を必要としたが,治療継続中であり,経過は良好である。レナリドミドの本邦PMS(中間報告)では,1,177例中,間質性肺疾患が3例報告されている。その投与量は,2例で25 mg, 1例で10 mgであった。転帰は1例が死亡,1例は未回復,1例は不明で,本症例においては,レナリドミドの投与量を,骨髄抑制後の再開投与量である15 mgとした。ボルテゾミブによる間質性肺炎症例に,レナリドミド投与をする場合,その投与量に関しての規定は無く,本症例は15 mg投与で安全に施行可能であった。文献的考察を含め報告する。

    その他リンク: https://jlc.jst.go.jp/DN/JALC/10019534809?from=CiNii

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  • A case of anal variceal bleeding successfully treated with endoscopic injection sclerotherapy 査読

    Tadashi Doi, Toshinori Okuda, Shinya Minami, Shingo Tanaka, Masahiro Hirakawa, Tomohiro Kubo, Yuki Ikeda, Natsumi Yamauchi, Naoki Uemura, Akihito Fujimi, Yuji Kanisawa

    Journal of Japanese Society of Gastroenterology   110 ( 2 )   248 - 254   2013年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.11405/nisshoshi.110.248

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  • A case of ulcerative colitis accompanied with myelodysplastic syndrome successfully treated by cyclosporine 査読

    Sho Takahashi, Yasushi Sato, Tamotsu Sagawa, Shingo Tanaka, Kazuyuki Murase, Kohichi Takada, Satoshi Iyama, Tsutomu Sato, Rishu Takimoto, Masayoshi Kobune, Ganji Kuroiwa, Michiaki Hirayama, Tetsuro Okamoto, Junji Kato

    Journal of Japanese Society of Gastroenterology   108 ( 8 )   1405 - 1412   2011年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.11405/nisshoshi.108.1405

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  • Iron chelator deferasirox rescued mice from Fas-induced fulminant hepatitis 査読 国際誌

    Tsutomu Sato, Masayoshi Kobune, Kazuyuki Murase, Yukari Kado, Tetsuro Okamoto, Shingo Tanaka, Shohei Kikuchi, Hiroyuki Nagashima, Yutaka Kawano, Kohichi Takada, Satoshi Iyama, Koji Miyanishi, Yasushi Sato, Rishu Takimoto, Junji Kato

    HEPATOLOGY RESEARCH   41 ( 7 )   660 - 667   2011年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1111/j.1872-034X.2011.00821.x

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  • 女性は女性医師による大腸内視鏡検査を望んでいるか

    大浦 佳永, 黒瀬 加奈, 牧野 聖子, 住吉 徹哉, 田中 信悟, 田村 文人, 對馬 隆浩, 水島 健, 千葉 大樹, 辻 靖, 由崎 直人, 近藤 仁

    Gastroenterological Endoscopy   52 ( 12 )   3347 - 3352   2010年12月

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    記述言語:日本語   出版者・発行元:(一社)日本消化器内視鏡学会  

    DOI: 10.11280/gee.52.3347

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  • Phase II study of S-1, docetaxel and cisplatin combination chemotherapy in patients with unresectable metastatic gastric cancer 査読 国際誌

    Yasushi Sato, Tetsuji Takayama, Tamotsu Sagawa, Yasuo Takahashi, Hiroyuki Ohnuma, Syunichi Okubo, Naoaki Shintani, Shingo Tanaka, Masaya Kida, Yasuhiro Sato, Hidetoshi Ohta, Koji Miyanishi, Tsutomu Sato, Rishu Takimoto, Masayoshi Kobune, Koji Yamaguchi, Koichi Hirata, Yoshiro Niitsu, Junji Kato

    CANCER CHEMOTHERAPY AND PHARMACOLOGY   66 ( 4 )   721 - 728   2010年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s00280-009-1215-2

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  • 脂肪性肝疾患の頻度に及ぼすアルコール摂取の影響

    土居 忠, 田中 信悟, 佐藤 康裕, 太田 英敏, 南 伸弥, 藤見 章仁, 蟹澤 祐司, 田村 文人, 平川 昌宏, 小野 薫

    肝臓   51 ( 9 )   501 - 507   2010年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:(一社)日本肝臓学会  

    DOI: 10.2957/kanzo.51.501

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  • Adenocarcinoma of Meckel's diverticulum diagnosed by capsule endoscopy and single-balloon enteroscopy 査読

    Yasuhiro Sato, Shingo Tanaka, Yutaku Ko, Toshinori Okuda, Fumito Tamura, Akihito Fujimi, Tadashi Doi, Yuji Kanisawa, Hidetoshi Ohta

    Clinical Journal of Gastroenterology   2 ( 6 )   388 - 393   2009年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s12328-009-0111-y

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  • A case of early esophageal adenocarcinoma arising from esophageal cardiac glands 査読

    Yutaku Ko, Yasuhiro Sato, Shingo Tanaka, Toshinori Okuda, Akihito Fujimi, Tadashi Doi, Yuji Kanisawa, Kazuhiro Iwai, Hidetoshi Ohta

    Journal of Japanese Society of Gastroenterology   106 ( 9 )   1327 - 1333   2009年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.11405/nisshoshi.106.1327

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  • [Spontaneous pneumothorax, an unusual manifestation of imatinib-resistant chronic eosinophilic leukemia: an autopsy study]. 査読

    Fujimi A, Kanisawa Y, Tanaka S, Okuda T, Sato Y, Doi T, Ohta H, Iwasaki S, Ishizu A, Huang Y

    Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine   98 ( 4 )   862 - 865   2009年4月

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    記述言語:日本語   出版者・発行元:The Japanese Society of Internal Medicine  

    近年,FIP1L1/PDGFRα融合遺伝子(FP遺伝子)陽性の慢性好酸球性白血病(chronic eosinophilic leukemia;CEL)に対するimatinib(IM)の有効性が示され,治療成績は著しく改善しているが長期予後には不明な点も多い.今回,我々はIMに耐性化し終末期に自然気胸を併発したCEL症例を経験した.剖検で好酸球の肺胞への高度の浸潤およびその近傍の線維化,気腫化が確認され,CELの進行が肺実質の破壊をきたし気胸の原因となったと推定された.<br>

    その他リンク: https://jlc.jst.go.jp/DN/JALC/00330166346?from=CiNii

    DOI: 10.2169/naika.98.862

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  • ダブルバルーン小腸内視鏡にて除去しえた小腸内異物の3例

    佐川 保, 高山 哲治, 佐藤 康史, 高橋 祥, 田中 信悟, 小笹 里砂, 井山 諭, 黒田 裕行, 加藤 淳二, 新津 洋司郎

    Gastroenterological Endoscopy   50 ( 10 )   2684 - 2690   2008年10月

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    記述言語:日本語   出版者・発行元:(一社)日本消化器内視鏡学会  

    DOI: 10.11280/gee1973b.50.2684

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  • [Two cases of advanced gastric cancer in which paclitaxel proved effective after resistance to docetaxel]. 査読

    Tsushima T, Tsuji Y, Abe S, Tanaka S, Tamura F, Mizushima T, Makino K, Oura K, Honda K, Sumiyoshi T, Yoshizaki N, Kondo H

    Gan to kagaku ryoho. Cancer & chemotherapy   34 ( 10 )   1647 - 1650   2007年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

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  • [Feasibility of modified FOLFIRI regimen for patients with refractory advanced or recurrent colorectal cancer]. 査読

    Takahari D, Tsuji Y, Tanaka S, Tsushima T, Ohura K, Honda K, Sumiyoshi T, Yoshizaki N, Kondo H

    Gan to kagaku ryoho. Cancer & chemotherapy   34 ( 2 )   207 - 211   2007年2月

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  • [Gastric relapse of stage I ocular adnexal mucosa-associated lymphoid tissue lymphoma]. 査読

    Sato T, Takimoto R, Iyama S, Ono K, Tanaka S, Araki N, Nishiie K, Murase K, Sato Y, Kobune M, Matsunaga T, Kato J, Niitsu Y

    [Rinsho ketsueki] The Japanese journal of clinical hematology   48 ( 1 )   56 - 60   2007年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本血液学会  

    症例は57歳,男性。右涙腺に原発するmucosa-associated lymphoid tissue lymphoma (MALT lymphoma)に対し,局所への放射線照射が施行された。その際の胃内視鏡検査では胃粘膜に軽度の炎症性変化が指摘され,ウレアーゼテストが陽性であったため,ピロリ菌の除菌療法が施行された。その2年後,再び胃内視鏡検査を施行したところ,MALTリンパ腫病変が検出された。涙腺病変と胃病変のIgH遺伝子をサザン法で検索したところ,全く同一の再構成パターンが得られた。このため,ピロリ菌感染による慢性炎症を母地とした異所性発癌ではなく,原発巣の胃転移と考えた。また,涙腺MALTリンパ腫のリンパ腫細胞は,リンパ球が消化管粘膜へ接着する際に必須であるintegrin &alpha;4&beta;7を高発現していたため,この接着分子が胃転移に重要な働きをした可能性があると考えられた。

    その他リンク: http://search.jamas.or.jp/link/ui/2007162208

    DOI: 10.11406/rinketsu.48.56

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  • [Present status of home therapy cancer patients using an infusor]. 査読

    Tsuji Y, Tsushima T, Tanaka S, Mizushima T, Tamura F, Chiba H, Honda K, Makino K, Ohura K, Sumiyoshi T, Yoshizaki N, Kondo H

    Gan to kagaku ryoho. Cancer & chemotherapy   33 Suppl 2   260 - 263   2006年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

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  • [Peripheral T-cell lymphoma presenting with eosinophilia due to interleukin-5 produced by lymphoma cells]. 査読

    Matsunaga T, Sato T, Iyama S, Tanaka S, Murase K, Sato Y, Kobune M, Takimoto R, Kato J, Kuroda H, Niitsu Y

    [Rinsho ketsueki] The Japanese journal of clinical hematology   47 ( 11 )   1457 - 1462   2006年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Japanese Society of Hematology  

    症例は72歳, 男性。頸部リンパ節腫脹の精査を目的に入院し, リンパ節生検の結果から, 末梢性T細胞性リンパ腫 (peripheral T cell lymphoma; PTCL) と診断した。著明な好酸球増多を認めたため, 血清Interleukin-5 (IL-5) を測定したところ高値を示した。また, 生検したリンパ節組織の免疫染色ではIL-5陽性の細胞が散見された。CHOP療法を2クール施行したところ, 腫大したリンパ節は消失し, 好酸球数は正常となった。また, これにともない血清IL-5も正常化した。PTCLでは稀に好酸球増多を合併すると報告されているが, 本症例では腫瘍細胞由来のIL-5が原因と推測された。

    その他リンク: https://jlc.jst.go.jp/DN/JALC/00288263616?from=CiNii

    DOI: 10.11406/rinketsu.47.1457

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共同研究・競争的資金等の研究課題

  • CARとCIML NK細胞を用いた新規固形癌治療の開発

    研究課題/領域番号:21H02789  2021年4月 - 2024年3月

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    宮西 浩嗣, 久保 智洋, 大須賀 崇裕, 田中 信悟, 加藤 淳二, 濱口 孝太

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    配分額:17550000円 ( 直接経費:13500000円 、 間接経費:4050000円 )

    Chimeric antigen receptor(CAR)を用いた遺伝子改変T細胞療法(CAR-T療法)は、B細胞性腫瘍に対して劇的な治療効果をもたらした。更にallogenic source を用いたCAR-NK 療法がB細胞性腫瘍に対してCAR-T療法と同等の効果があることが報告され、同治療ではCAR-T療法に比べ、cytokine release syndromeや重篤な神経毒性の出現が少なく、安全性が高いことが示された。しかしながら固形腫瘍、特に膵癌に対するCAR-NK療法の効果に関しては、造血器腫瘍に対するCD19 CAR療法の劇的な治療効果と比較すると抗腫瘍効果は限定的であり、その免疫阻害の克服方法が問われている。本研究においては、CARコンストラクトにIL-12/15/18を組み込んだ”armored CAR-NK”(IL-12/15/18を自己分泌する)を作製し、膵癌細胞株に対する抗腫瘍効果を検討することを目的とした。まず前段階としてIL-12/15/18でNK細胞を刺激して作製したCytokine Induced Memory Like (CIML) NK細胞が、実際に膵癌に対して抗腫瘍効果を発揮するかどうかを検討するため、複数の膵臓癌細胞株とCIML NK細胞を共培養し、7AADおよびAnnexin Vを用いてアポトーシスを解析したところ、コントロールNK細胞(IL-2での刺激のみ)と比較し、有意にアポトーシスを誘導することを示した。以上より当該年度の研究において、通常のCAT-NKと比較し、本研究で作成を予定しているarmored CAR-NKはより膵癌細胞に対してより高い効果を発揮できる可能性を示す貴重なデータを得られたと考える。

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  • 酸化的DNA傷害修復酵素欠損マウス由来肝腫瘍オルガノイドを用いた新規治療法の探索

    研究課題/領域番号:21K08011  2021年4月 - 2024年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    田中 信悟, 加藤 淳二, 宮西 浩嗣

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    配分額:4160000円 ( 直接経費:3200000円 、 間接経費:960000円 )

    肝細胞癌は依然予後不良の疾患であり,分子標的薬導入後の平均生存期間は1年程度である.肝細胞癌の背景肝疾患は多岐にわたり,遺伝子変異も多様かつ低頻度に生じることが報告されている.このことが分子標的薬開発の進まない原因とされ,前臨床段階からの背景肝疾患別アプローチが必要と考えられている.また,分子標的薬の開発において,腫瘍の状態を忠実に反映した新規in vitroスクリーニング試験の開発が強く求められている.申請者らはこれまでに酸化的DNA傷害修復酵素MUTYH欠損マウスに高脂質・高糖質・鉄過剰食を給餌して肝発癌モデルマウス(HCV,NASHモデル)を作成した.本研究の目的は同マウス肝腫瘍由来オルガノイドを作成し,新規肝細胞癌治療薬を探索することである.
    研究計画としては,1. MUTYH欠損マウス由来肝腫瘍(HCV,NASHモデル)とヒト肝細胞癌との類似性の評価 (令和3年度),2. MUTYH欠損マウス由来肝腫瘍からのオルガノイド作成 (令和3,4年度),3. 肝腫瘍オルガノイドを用いた抗腫瘍薬スクリーニング (令和4,5年度)と設定し,まず令和3年度は上記1,2に取り組んだ.
    上記1についはNASHモデルの肝腫瘍についてデータを取得し,現在比較対象となるヒト肝細胞癌のsomatic mutationデータ(International Cancer Genome Consortium,The Cancer Genome Atlas,Cancer Gene Census)との相同性について解析中である.上記2については,培養法の確立に取り組んでいる.

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  • 酸化的DNA傷害修復酵素欠損マウスを用いたNASH肝発癌機序の解明および治療応用

    研究課題/領域番号:19K17405  2019年4月 - 2022年3月

    日本学術振興会  科学研究費助成事業  若手研究

    田中 信悟

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    配分額:4160000円 ( 直接経費:3200000円 、 間接経費:960000円 )

    申請者らは酸化的DNA傷害修復酵素MUTYH欠損マウスに高カロリー・高酸化ストレスを負荷した新規NASHモデルマウスを作成した.本研究は同マウスの評価および新規抗酸化療法の開発を目的とした. 高脂肪,高コレステロール食+鉄過剰食(HFHC+Fe)を給餌したマウスの肝組織内に酸化ストレスの指標とされる4-HNEおよび8-OHdG量の増加を認めた.MUTYH-nullマウスにHFHC+Feを給餌したところ25%のマウスに肝腫瘍を認めた.遺伝子発現を比較したところ,ヒトの肝細胞癌で比較的高頻度に認められるWnt/β cateninシグナル異常の関与が明らかとなった.

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  • 肝癌細胞特異的薬物搬送とClass選択的HDAC阻害薬による新規肝癌治療開発

    研究課題/領域番号:18K07914  2018年4月 - 2021年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    宮西 浩嗣, 加藤 淳二, 田中 信悟, 菊地 尚平

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    配分額:4420000円 ( 直接経費:3400000円 、 間接経費:1020000円 )

    ヒストン脱アセチル化酵素(HDAC)は様々な癌で発現し、癌治療耐性に関与している。HDAC class IIaは肝癌細胞で認められる。本研究では肝細胞癌に対してHDAC class IIa阻害薬をレンバチニブと併用することで、相乗的な抗腫瘍効果を誘導することを見出した、レンバチニブはFibroblast growth factor receptor 4 (FGFR4)を阻害することで抗腫瘍効果を発揮すると考えられている。両薬剤併用でのアポトーシスの誘導はFGFR4の発現に依存していると考えられた。さらにFGFR4の発現低下により、相乗的効果が誘導されることが示唆された。

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  • NASHにおける鉄酸化ストレスの誘導機序の解明と治療への応用

    研究課題/領域番号:17K15955  2017年4月 - 2019年3月

    日本学術振興会  科学研究費助成事業  若手研究(B)

    田中 信悟, 加藤 淳二, 宮西 浩嗣, 坂本 拡基

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    配分額:4160000円 ( 直接経費:3200000円 、 間接経費:960000円 )

    In vitro実験として小腸上皮細胞の形態・機能を有するmonolayersを形成するため,Caco-2/TC7細胞を多孔質フィルター上で培養し,DMT1 mRNA発現量やIRP活性などを測定することができた.
    In vivo実験として,脂肪肝炎モデルマウスを作製した.Surwit dietで飼育し,鉄過剰群では鉄分450mg/kg dietを添加した.体重測定は適宜行い,通常飼料群との比較では明らかな体重増加を認めた.肝組織を採取し固定標本を作製の後,肝障害,線維化,鉄沈着,8-OHdG抗体を用いた酸化ストレスの程度および発癌について解析することができた.

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  • フリーラジカルおよび酸化的DNA損傷修復遺伝子MUTYHを介した肝発癌機序の解明

    研究課題/領域番号:24590985  2012年4月 - 2015年3月

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    宮西 浩嗣, 加藤 淳二, 田中 信悟, 田中 信悟

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    配分額:5460000円 ( 直接経費:4200000円 、 間接経費:1260000円 )

    C型慢性肝炎患者におけるrs3219487のminor homo形質保有者においてMUYTYH発現が低下しており,同形質保有者において有意に肝発癌率が高いことを示した.また発現が低下する機序は同配列のpromoter領域への干渉であることも確認した.MUTYHホモ欠損マウスに鉄過剰食を与えると肝発癌率が有意に増加することも示した.治療の進歩により,HCV現感染者数は減少するが,既往感染者における肝発癌が今後問題である.本研究の結果はrs3219487 minor allele保有が肝発癌の危険因子であることを示唆し,早期発見あるいは抗酸化療法の治療介入が肝発癌阻止に有用である可能性を示した.

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