JaLCDOI 10.18926/AMO/53558
フルテキストURL 69_4_219.pdf
著者 Toshimori, Junichi| Nouso, Kazuhiro| Nakamura, Shinichiro| Wada, Nozomu| Morimoto, Yuki| Takeuchi, Yasuto| Yasunaka, Tetsuya| Kuwaki, Kenji| Ohnishi, Hideki| Ikeda, Fusao| Shiraha, Hidenori| Takaki, Akinobu| Yamamoto, Kazuhide|
抄録 We conducted a retrospective cohort study to investigate the predisposing factors for local recurrence and complications after percutaneous radiofrequency ablation (RFA) of hepatocellular carcinoma (HCC). HCC patients (n=397) consecutively treated with RFA (256 males, 141 females, median age 69 years) were enrolled. In these patients, 1,455 nodules (median size 17mm) were ablated. Predisposing factors for overall recurrence and local recurrence in the context of tumor location and complications were examined. Local recurrence was observed for 113 of the 1,455 nodules. The 1-, 3- and 5-year local recurrence rates were 2.2オ, 7.4オ and 9.5オ, respectively. A multivariate Cox proportional hazard analysis revealed that large tumor size (>2cm), tumor location (adjacent to the major portal branch or hepatic vein), and small ablated margin (<3mm) were independent predisposing factors for local recurrence after RFA (HR=1.70-2.81). Tumor location (adjacent to the major portal branch, hepatic vein, or diaphragm) was also revealed as a risk factor for liver damage due to RFA. HCC adjacent to the major portal vein or hepatic vein was associated with a higher risk for local recurrence and for complications;therefore, special precautions are necessary when applying RFA to HCC near vessels even when the tumors are located at an easy-to-puncture site.
キーワード hepatocellular carcinoma radiofrequency ablation ablated margin tumor location
Amo Type Original Article
発行日 2015-08
出版物タイトル Acta Medica Okayama
69巻
4号
出版者 Okayama University Medical School
開始ページ 219
終了ページ 226
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2015 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 26289913
Web of Sience KeyUT 000365519100005
JaLCDOI 10.18926/AMO/49042
フルテキストURL 66_6_461.pdf
著者 Koike, Kazuko| Takaki, Akinobu| Kato, Nobuyuki| Ouchida, Mamoru| Kanzaki, Hirotaka| Yasunaka, Tetsuya| Shiraha, Hidenori| Miyake, Yasuhiro| Yamamoto, Kazuhide|
抄録 Hepatitis C virus (HCV) infection induces several changes in hepatocytes, such as oxidative stress, steatosis, and hepatocarcinogenesis. Although considerable progress has been made during recent years, the mechanisms underlying these functions remain unclear. We employed proteomic techniques in HCV replicon-harboring cells to determine the effects of HCV replication on host-cell protein expression. We examined two-dimensional electrophoresis (2-DE) and mass spectrometry to compare and identify differentially expressed proteins between HCV subgenomic replicon-harboring cells and their “cured” cells. One of the identified proteins was confirmed using enzyme-linked immunosorbent assay (ELISA) and Western blot analysis. Full-length HCV genome RNA replicating and cured cells were also assessed using ELISA. Replicon-harboring cells showed higher expression of retinal dehydrogenase 1 (RALDH-1), which converts retinol to retinoic acid, and the cured cells showed higher expression of retinol-binding protein (RBP), which transports retinol from the liver to target tissues. The alteration in RBP expression was also confirmed by ELISA and Western blot analysis. We conclude that protein expression profiling demonstrated that HCV replicon eradication affected retinol-related protein expression.
キーワード hepatitis C virus retinol-binding protein
Amo Type Original Article
発行日 2012-12
出版物タイトル Acta Medica Okayama
66巻
6号
出版者 Okayama University Medical School
開始ページ 461
終了ページ 468
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2012 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 23254580
Web of Sience KeyUT 000312966100005
JaLCDOI 10.18926/AMO/52898
フルテキストURL 68_5_291.pdf
著者 Tsuzaki, Ryuichiro| Takaki, Akinobu| Yagi, Takahito| Ikeda, Fusao| Koike, Kazuko| Iwasaki, Yoshiaki| Shiraha, Hidenori| Miyake, Yasuhiro| Sadamori, Hiroshi| Shinoura, Susumu| Umeda, Yuzo| Yoshida, Ryuichi| Nobuoka, Daisuke| Utsumi, Masashi| Nakayama, Eiichi| Fujiwara, Toshiyoshi| Yamamoto, Kazuhide|
抄録 It is not known how the immune system targets hepatitis C virus (HCV)-infected HLA-mismatched hepatocytes under immune-suppressed conditions after orthotopic liver transplantation (OLT). In addition, the relationship between the HCV-specific immune response and IL28B variants as predictors of HCV clearance has not been well-characterized. We determined the IL28B polymorphisms for 57 post-OLT HCV carriers, and we assessed the HCV-specific immune responses by measuring the peripheral blood mononuclear cell-derived HCV-specific interferon-gamma (IFN-γ) response using an enzyme-linked immunospot assay. At 1-3 years after OLT, patients with no active hepatitis showed higher total spots on the immunospot assay. At>3 years after OLT, patients with resolved HCV showed higher levels of core, NS3, NS5A, and total spots compared to the chronic hepatitis patients. The IL28B major genotype in the donors correlated with higher spot counts for NS5A and NS5B proteins at 1-3 years after OLT. In the post-OLT setting, the HCV-specific immune response could be strongly induced in patients with no active hepatitis with an IL28B major donor or sustained virological response. Strong immune responses in the patients with no active hepatitis could only be maintained for 3 years and diminished later. It may be beneficial to administer IFN treatment starting 3 years after OLT, to induce the maximum immunological effect.
キーワード interferon gamma ELISPOT assay single nucleotide polymorphisms dendritic cell CD4 T cell
Amo Type Original Article
発行日 2014-10
出版物タイトル Acta Medica Okayama
68巻
5号
出版者 Okayama University Medical School
開始ページ 291
終了ページ 302
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2014 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 25338486
Web of Sience KeyUT 000343269300006
関連URL http://ousar.lib.okayama-u.ac.jp/metadata/53129
JaLCDOI 10.18926/AMO/53026
フルテキストURL 68_6_369.pdf
著者 Iwamuro, Masaya| Miyashima, Yuichi| Yoshioka, Takahiro| Murata, Toshihiro| Miyabe, Yoshio| Kawai, Yoshinari| Urata, Haruo| Shiraha, Hidenori| Okada, Hiroyuki| Yamamoto, Kazuhide|
抄録 A 67-year-old Japanese man underwent enterotomy because of enterolith ileus. Component analysis by infrared spectroscopy revealed that the enterolith was composed of a high concentration of deoxycholic acid. We further analyzed and compared the ultrastructure of the enterolith and a commercially available powdered form of deoxycholic acid by means of scanning electron microscopy and energy dispersive X-ray spectroscopy. Energy dispersive X-ray spectroscopy analysis revealed that the ratios of carbon and oxygen in the enterolith were equal to those in the deoxycholic acid powder. Scanning electron microscopy analysis showed rectangular prism-shaped particles on the surface of the enterolith. This structure was similar to that of the deoxycholic acid powder. The surgically removed enterolith had a twisted and coiled appearance. Possible mechanisms underlying the formation of this unique form are discussed.
キーワード enterolith deoxycholic acid scanning electron microscopy infrared spectroscopy energy dispersive X-ray spectroscopy
Amo Type Case Report
発行日 2014-12
出版物タイトル Acta Medica Okayama
68巻
6号
出版者 Okayama University Medical School
開始ページ 369
終了ページ 374
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2014 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 25519031
Web of Sience KeyUT 000346882200007
著者 白羽 英則|
発行日 1996-03-31
出版物タイトル
資料タイプ 学位論文