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排序方式: 共有132条查询结果,搜索用时 31 毫秒
1.
Shimeru Kamihira Shigehiro Nakashima Shin Saitoh Michiko Kawamoto Yumiko Kawashima Mitoshi Shimamoto 《Cancer science》1993,84(8):834-837
A fully automated chemiluminescence immunoassay was developed for the detection of antibodies to HTLV-I. We used partially purified viral antigens coated on small polystyrene beads together with acridinium ester-labeled anti-human immunoglobulin G mouse immunoglobulin G in this method. A good agreement was observed between our proposed method, the indirect immunofluorescence assay, the particle-agglutination test and the enzyme immunoassay. This new method, which is simple, sensitive, specific and rapid, should be useful for mass screening of anti-HTLV-I antibodies. 相似文献
2.
Expression and functional analyses of breast cancer resistance protein in lung cancer. 总被引:12,自引:0,他引:12
3.
Miyaaki H Ichikawa T Yatsuhashi H Taura N Miuma S Usui T Mori S Kamihira S Tanaka Y Mizokami M Nakao K 《Hepatology research》2011,41(12):1216-1222
Aim: The aim of this study was to investigate the relationship among the expression of suppressor of cytokine signaling 3 (SOCS 3) in the liver, the SNPs in the IL28B locus, and the outcome of interferon therapy. Methods: Prior to interferon treatment, we immunostained 67 liver specimens from chronic hepatitis C (CHC) patients who were receiving peginterferon alpha‐2b/ribavirin therapy for suppressor of cytokine signaling 3 (SOCS3), and compared the expression of SOCS3, IL28 polymorphisms and other clinical factors between the patients and compared their eventual outcomes. Results: Significant differences between the low SOCS3 group and high SOCS3 group were found in age, as well as in the platelet, transaminase, gamma‐glutamyl transpeptidase levels. The incidence of high SOCS3 was not significantly different between subjects with the TT genotype and the TG genotype (TT : TG = 71%:29%, P = 0.250). In a multivariate analysis, age (≥65 years old) (odds ratio 0.221 [0.120–0.966], P = 0.045), IL28B gene (genotype TT) (odds ratio 5.422 [1.254–23.617], P = 0.024) and SOCS3 (high) (odds ratio 0.308 [0.104–0.948], P = 0.040) were significant predictors of the interferon response. In patients with the TT genotype, those with low SOCS3 immunostaining showed a high sustained virological response (69%), while the sustained virological rate was low (27%) in the patients with high SOCS3 immunostaining. Conclusions: Using a combination of the SOCS3 immunostained area in the liver and the expression of IL28B single nucleotide polymorphisms might be a useful predictor of hepatitis C virus clearance by interferon therapy. 相似文献
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Itonaga H Tsushima H Hata T Matsuo E Imanishi D Imaizumi Y Kawaguchi Y Fukushima T Doi Y Mori S Kamihira S Tomonaga M Miyazaki Y 《International journal of hematology》2012,95(2):209-213
The T315I BCR-ABL mutation in chronic myelogenous leukemia (CML) patients is responsible for up to 20% of all clinically observed resistance. This mutation confers resistance not only to imatinib, but also to second-generation BCR-ABL tyrosine kinases, such as nilotinib and dasatinib. A number of strategies have been implemented to overcome this resistance, but allogeneic stem cell transplantation remains the only established therapeutic option for a cure. A 61-year-old male was diagnosed with Philadelphia chromosome-positive chronic-phase CML in 2002. He was initially treated with imatinib and complete cytogenetic response (CCyR) was achieved 12 months later. However, after 18 months, a loss of CCyR was observed and a molecular study at 24 months revealed a T315I mutation of the BCR-ABL gene. At 30 months, imatinib/interferon-alfa (IFNα) combination therapy was initiated in an effort to overcome the resistance. Thirty months later, he re-achieved CCyR, and the T315I BCR-ABL mutation disappeared at 51 months. To our knowledge, this is the first case report showing the effectiveness of imatinib/IFNα combination therapy for CML patients bearing the T315I BCR-ABL mutation. 相似文献
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Kenichiro Kinoshita MD Shimeru Kamihira Shüichi Ikeda Yasuaki Yamada Takaya Muta Tsutomu Kitamura Michito Ichimaru Takeshi Matsuo 《Cancer》1982,50(8):1554-1562
Cells obtained from malignant lymph nodes and the peripheral blood of 106 patients with non-Hodgkin's lymphomas were examined for T- and B-cell characteristics. Surprisingly, 79 cases were of the T-cell type on the basis of spontaneous rosette formation with sheep erythrocytes (E-rosettes). Of the remaining cases, 15 were B-cell in nature (monoclonal S-Ig positive), seven were non T-, non B-cell and four cases were undetermined. Forty-nine (62.0%) of the T-cell malignancies were of a leukemic variety, characterized by pleomorphism in the peripheral blood cell size, and histological appearance. Most of the leukemic T-cells showed obvious lymphocytic differentiation, with condensed nuclear chromatin and scant cytoplasm, although in many of the cases, the lymphomatous infiltrate was dominated by large or pleomorphic lymphoid cells. All tumors were of a diffuse variety, and on histologic examination included a mixed type (21 cases), PDLL forms (15 cases), a large lymphoid cell type (eight cases), and WDLL forms (five cases). Although the mixed type with a pleomorphic lymphoid infiltrate was distinctive, there has been considerable variation from case to case. Clinically this unusual T-cell, leukemic variety of non-Hodgkin's lymphomas primarily involved middle-aged and elderly subjects, and was characterized by wide spread organ invasion (preferentially to the liver, spleen and skin), resistence to chemotherapy, and a poor prognosis. A mediastinal mass was not observed in all cases. The patients had a median survival of only ten months. 相似文献
9.
Satoh M Toma H Sugahara K Etoh K Shiroma Y Kiyuna S Takara M Matsuoka M Yamaguchi K Nakada K Fujita K Kojima S Hori E Tanaka Y Kamihira S Sato Y Watanabe T 《Oncogene》2002,21(16):2466-2475
The intermediate state of HTLV-1 infection, often found in individuals dually infected with Strongyloides stercoralis (S. stercoralis) and HTLV-1, is assumed to be a preleukemic state of adult T-cell leukemia (ATL). To investigate the effects of S. stercoralis superinfection on the natural history of HTLV-1 infection, we characterized peripheral blood samples of these individuals in Okinawa, Japan, an endemic area for both HTLV-1 and S. stercoralis and we studied effects of the parasite antigen on T-cells. The dually infected individuals showed a significantly higher provirus load and an increase in CD4(+)25(+) T cell population, with a significant, positive correlation. This increase was attributable to polyclonal expansion of HTLV-1-infected cells, as demonstrated by inverse-long PCR analysis of the integration sites. S. stercoralis antigen activated the IL-2 promoter in reporter gene assays, induced production of IL-2 by PBMC in vitro, and supported growth of IL-2 dependent cell lines immortalized by HTLV-1 infection or the transduction of Tax. Taken collectively, these results indicate that S. stercoralis infection induces polyclonal expansion of HTLV-1-infected cells by activating the IL-2/IL-2R system in dually infected carriers, an event which may be a precipitating factor for ATL and inflammatory diseases. 相似文献
10.
A nested case-control study of risk factors for adult T-cell leukemia/lymphoma among human T-cell lymphotropic virus type-I carriers in Japan 总被引:1,自引:0,他引:1
Arisaw K Katamine S Kamihira S Kurokawa K Sawada T Soda M Doi H Saito H Shirahama S 《Cancer causes & control : CCC》2002,13(7):657-663
Objectives: The purpose of this study was to investigate the serological risk factors for development of adult T-cell leukemia/lymphoma (ATL) among human T-cell lymphotropic virus type-I (HTLV-I) carriers. Methods: A nested case–control study was performed. The source population comprised 23,922 subjects who had either visited the outpatient clinic or who had received annual health check-ups at the K Hospital, Nagasaki, Japan, at least once during 1985–1996 (HTLV-I seroprevalence = 16.1%). Markers of HTLV-I infection were examined in stored sera from 29 incident cases of ATL diagnosed during 1985–1997, and 158 controls matched for sex, birth year, date of sample collection, and HTLV-I seropositivity (median follow-up = 6.4 years). Results: In exact conditional logistic regression analysis, high levels of soluble interleukin-2 receptor ( 500 U/ml) and high HTLV-I antibody titers ( 1024) were independently associated with an increased risk of developing ATL (Odds ratio 20.5, 95% confidence interval (CI) 4.5–194 and 2.9, 95% CI 0.98–9.5, respectively). The results remained essentially unchanged when the subjects were restricted to those whose histories were followed for two years or longer. Conclusions: These findings indicate that high soluble interleukin-2 receptor levels and high HTLV-I antibody titers are strong predictors of ATL among carriers of HTLV-I. 相似文献