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Hamaoka K, Suzuki C, Hamaoka-Okamoto A, Yahata T, Nakamura A, Ikeda K. P1562Potential of Proline-rich tyrosine kinase 2 (Pyk2) as a therapeutic target for Kawasaki disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Hamaoka
- Uji-Tokusyukai Medical Center, Pediatric Cardiology & Kawasaki Disease Center, Uji, Japan
| | - C Suzuki
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | - T Yahata
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A Nakamura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K Ikeda
- Kyoto Prefectural University of Medicine, Kyoto, Japan
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Nakajima R, KInoshita M, Okita H, Yahata T, Hayashi Y, Nakada M. P18.08 Does functional disorder after awake surgery reduce quality of life in patients with glioma? Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ito F, Ito T, Suzuki C, Yahata T, Ikeda K, Hamaoka K. The Application of a Modified d-ROMs Test for Measurement of Oxidative Stress and Oxidized High-Density Lipoprotein. Int J Mol Sci 2017; 18:ijms18020454. [PMID: 28230785 PMCID: PMC5343988 DOI: 10.3390/ijms18020454] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/04/2017] [Accepted: 02/15/2017] [Indexed: 12/19/2022] Open
Abstract
Reactive oxygen species (ROS) are involved in the initiation and progression of atherosclerosis. ROS-derived hydroperoxides, as an indicator of ROS production, have been measured by using the diacron reactive oxygen metabolites (d-ROMs) test, which requires iron-containing transferrin in the reaction mixture. In this study we developed a modified d-ROMs test, termed the Fe-ROMs test, where iron ions were exogenously added to the reaction mixture. This modification is expected to exclude the assay variation that comes from different blood iron levels in individuals. In addition, this Fe-ROMs test was helpful for determining the class of plasma lipoproteins that are hydroperoxidized. Low-density lipoprotein/very low-density lipoprotein (LDL/VLDL) and high-density lipoprotein (HDL) were purified by use of an LDL/VLDL purification kit and the dextran sulfate-Mg2+ precipitation method, respectively; their hydroperoxide contents were assessed by performing the Fe-ROMs test. The majority of the hydroperoxides were detected only in the HDL fraction, not in the LDL/VLDL. Further detailed analysis of HDLs by size-exclusion high-performance liquid chromatography revealed that the hydroperoxide-containing molecules were small-sized HDLs. Because HDL was shown to be the principal vehicle for the plasma hydroperoxides, this Fe-ROMs test is a beneficial method for the assessment of oxidized-HDL levels. Indeed, Fe-ROMs levels were strongly associated with the levels of oxidized HDL, which were determined by performing the malondialdehyde-modified HDL enzyme immunoassay. In conclusion, the Fe-ROMs test using plasma itself or the HDL fraction after dextran sulfate-Mg2+ precipitation is useful to assess the functionality of HDL, because the oxidation of HDL impairs its antiatherogenic capacity.
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Affiliation(s)
- Fumiaki Ito
- Institute of Health Sciences, Sunstar Inc., Osaka 569-1195, Japan.
| | - Tomoyuki Ito
- Department of Rehabilitation Medicine, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Chinatsu Suzuki
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Tomoyo Yahata
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Kazuyuki Ikeda
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Kenji Hamaoka
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
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Ikeda K, Mizoro Y, Ameku T, Nomiya Y, Mae SI, Matsui S, Kuchitsu Y, Suzuki C, Hamaoka-Okamoto A, Yahata T, Sone M, Okita K, Watanabe A, Osafune K, Hamaoka K. Transcriptional Analysis of Intravenous Immunoglobulin Resistance in Kawasaki Disease Using an Induced Pluripotent Stem Cell Disease Model. Circ J 2016; 81:110-118. [PMID: 27867156 DOI: 10.1253/circj.cj-16-0541] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Approximately 10-20% of Kawasaki disease (KD) patients are resistant to intravenous immunoglobulin (IVIG) treatment. Further, these patients are at a particularly high risk of having coronary artery abnormalities. The mechanisms of IVIG resistance in KD have been analyzed using patient leukocytes, but not patient vascular endothelial cells (ECs). The present study clarifies the mechanisms of IVIG resistance in KD using an induced pluripotent stem cell (iPSC) disease model.Methods and Results:Dermal fibroblasts or peripheral blood mononuclear cells from 2 IVIG-resistant and 2 IVIG-responsive KD patients were reprogrammed by the episomal vector-mediated transduction of 6 reprogramming factors. KD patient-derived iPSCs were differentiated into ECs (iPSC-ECs). The gene expression profiles of iPSC-ECs generated from IVIG-resistant and IVIG-responsive KD patients were compared by RNA-sequencing analyses. We found that the expression ofCXCL12was significantly upregulated in iPSC-ECs from IVIG-resistant KD patients. Additionally, Gene Set Enrichment Analysis (GSEA) revealed that gene sets involved in interleukin (IL)-6 signaling were also upregulated. CONCLUSIONS The first iPSC-based model for KD is reported here. Our mechanistic analyses suggest thatCXCL12, which plays a role in leukocyte transmigration, is a key molecule candidate for IVIG resistance and KD severity. They also indicate that an upregulation of IL-6-related genes may be involved in this pathogenesis.
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Affiliation(s)
- Kazuyuki Ikeda
- Department of Pediatric Cardiology and Nephrology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine
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Yahata T, Hamaoka K. Oxidative stress and Kawasaki disease: how is oxidative stress involved from the acute stage to the chronic stage? Rheumatology (Oxford) 2016; 56:6-13. [DOI: 10.1093/rheumatology/kew044] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 02/12/2016] [Indexed: 11/13/2022] Open
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Hamaoka-Okamoto A, Suzuki C, Yahata T, Ikeda K, Nagi-Miura N, Ohno N, Arai Y, Tanaka H, Takamatsu T, Hamaoka K. The involvement of the vasa vasorum in the development of vasculitis in animal model of Kawasaki disease. Pediatr Rheumatol Online J 2014; 12:12. [PMID: 24678599 PMCID: PMC3986644 DOI: 10.1186/1546-0096-12-12] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 03/20/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Kawasaki Disease (KD) involves a diffuse and systemic vasculitis of unknown etiology that mainly affects infants and children. Although a considerable number of analyses of the clinical, histopathological and molecular biological details underlying the mechanism responsible for the development of coronary arterial lesions, it is still poorly understood.The purpose of this study was to analyze the state of angiogenesis, vasculogenesis and the distribution of blood vessels using an animal model of KD like vasculitis. We investigated the involvement of the vasa vasorum from the adventitia in the vascular involvement and the development of the disease state by performing sequential histopathology, scanning electron microscopy (SEM) and micro computed tomography (CT) studies using a murine model of vasculitis induced by the Candida albicans water-soluble fraction (CAWS). METHODS To prepare the animal model of KD like vasculitis, CAWS was intraperitoneally injected into C57BL/6N mice for five consecutive days as reported by Ohno et al. We observed the changes of the vasa vasorum at the aorta and the orifices of the coronary arteries by SEM and micro CT, and also compared the neovascularization at the media and adventitia of the aorta by an immunohistochemical analysis. RESULTS As previously reported, obvious inflammation was detected two weeks after the injection of CAWS, and also intimal thickening was observed three weeks after the injection. We found that the vasa vasorum in the adventitia of the aorta was increased in the model mice. The vasa vasorum started increasing one week after the injection of CAWS, before any obvious vasculitis was microscopically detected. CONCLUSION The present results indicate that the vasculitis in Kawasaki disease starts as a disorder of the vasa vasorum.
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Affiliation(s)
- Akiko Hamaoka-Okamoto
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural, University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan.
| | - Chinatsu Suzuki
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural, University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tomoyo Yahata
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural, University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kazuyuki Ikeda
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural, University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Noriko Nagi-Miura
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan
| | - Yoshinori Arai
- Nihon University School of Dentistry, Chiyoda-ku, Tokyo 101-8310, Japan
| | - Hideo Tanaka
- Department of Pathology and Cell Regulation, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tetsuro Takamatsu
- Department of Pathology and Cell Regulation, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kenji Hamaoka
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural, University of Medicine Graduate School of Medical Science, Kamigyo-ku, Kyoto 602-8566, Japan
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Abstract
BACKGROUND Little is known about the platelet dynamics and the effect of antiplatelet therapy in Kawasaki disease (KD). The aim of this study was to clarify platelet activation dynamics in acute-phase KD patients by assaying platelet-derived microparticles (PDMPs). METHODS AND RESULTS The PDMP level in 18 patients with acute KD was measured on ELISA. Of the 18 patients, 14 were receiving oral aspirin and i.v. immunoglobulin (IVIG) and 4, oral aspirin alone. Blood samples were drawn before, immediately after, and 10-14 days after IVIG infusion; thereafter, at 1, 2, and 3 months after the onset of disease. PDMP level before aspirin treatment was significantly higher in acute-phase KD patients than in the control subjects with common febrile diseases (P<0.01). In the acute-phase KD patients, IVIG significantly decreased PDMP level; the PDMP level was not lower on the similar day of KD in the patients who did not receive IVIG. Eight patients' PDMP level rebounded after aspirin was discontinued. CONCLUSIONS Platelets are activated during acute-phase KD, which confirms the importance of antiplatelet therapy. In addition, platelet activation continues as long as 2 or 3 months after the acute phase, the time at which aspirin is commonly discontinued, and the timing of aspirin discontinuation should therefore be evaluated in each individual patient.
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Affiliation(s)
- Tomoyo Yahata
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
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Suzuki C, Yahata T, Okamoto-Hamaoka A, Fujii M, Yoshioka A, Niwa Y, Ikeda K, Nakamura A, Hamaoka K. Utility of whole-blood aggregometry for evaluating anti-platelet therapy for Kawasaki disease. Pediatr Int 2013; 55:550-4. [PMID: 23659651 DOI: 10.1111/ped.12120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 04/02/2013] [Accepted: 04/15/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Anti-platelet therapy for Kawasaki disease (KD) is often done without monitoring drug efficacy. The aim of this study was to investigate the utility of whole-blood aggregometry to evaluate the efficacy of anti-platelet therapy for KD. METHODS Of 37 late-phase KD patients included in the present study, 20 were prescribed anti-platelet drugs. Platelet-rich plasma (PRP) aggregation with collagen as the stimulus was measured using an optical aggregometer. The area under the curve of small and large size aggregations was calculated, and categorized into five classes: -2, -1, 0, 1, and 2. Whole-blood aggregation with collagen or adenosine 5'-diphosphate (ADP) as stimulus was evaluated using the platelet aggregation threshold index (PATI), which is the concentration of stimulus that induces a whole-blood aggregation rate of 50%. RESULTS In both collagen- and ADP-induced aggregation, there was a negative correlation between PATI and class determination using the PRP technique (collagen, rs = -0.870, P < 0.0001; ADP, rs = -0.620, P < 0.0001). Moreover, the PATI in collagen- and ADP-induced aggregation was significantly higher in the anti-platelet drug therapy group than in the untreated group (collagen, P < 0.0001; ADP, P = 0.0002). The serum thromboxane B2 level in the anti-platelet drug therapy group was also significantly lower than that in the untreated group (P < 0.0001). PATI was significantly higher in those treated with thienopyridine drug combinations than those without drug therapy (P = 0.0036). CONCLUSIONS Whole-blood aggregometry is useful for monitoring the efficacy of anti-platelet therapy for KD.
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Affiliation(s)
- Chinatsu Suzuki
- Departments of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
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Someya F, Mugii N, Hasegawa M, Yahata T, Nakagawa T. Predictors of Exercise-Induced Oxygen Desaturation in Systemic Sclerosis Patients With Interstitial Lung Disease. Respir Care 2013; 59:75-80. [DOI: 10.4187/respcare.02452] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sugaya S, Yahata T, Nishikawa N, Arinami Y, Maruhashi T, Takakuwa K, Tanaka K. Severe Asherman's syndrome complicated with placenta increta conceived by intracytoplasmic sperm injection following hysteroscopic surgery. CLIN EXP OBSTET GYN 2012; 39:547-549. [PMID: 23444767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Although severe Asherman's syndrome is a disease that may cause infertility, pregnancy and childbirth are possible by performing hysteroscopic surgery. However, the obstetrical outcome is not always satisfactory. We report a case where severe Asherman's syndrome occurred following a cesarean section. Hysteroscopic surgery was performed due to secondary infertility, and pregnancy was achieved through a subsequent intracytoplasmic sperm injection. At 23 weeks of gestation, the patient was hospitalized due to the threat of premature labor, and a cesarean section was performed at 29 weeks of gestation after pregnancy-induced hypertension occurred. It was determined to be abnormal adherent placentation such as placenta increta through intraoperative findings, and a cesarean hysterectomy was performed. The pathological diagnosis of the uterus was placenta increta. Due to the risk of complications from placenta increta in pregnancies following hysteroscopic surgery in patients with severe Asherman's syndrome, it is important to realize the high risk involved in such cases during the pregnancy course, and careful perinatal management should be required.
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Affiliation(s)
- S Sugaya
- Department of Obstetrics and Gynecology, Joetsu General Hospital, Joetsu City, Japan.
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Yahata T, Suzuki C, Hamaoka A, Fujii M, Hamaoka K. Dynamics of reactive oxygen metabolites and biological antioxidant potential in the acute stage of Kawasaki disease. Circ J 2011; 75:2453-9. [PMID: 21785226 DOI: 10.1253/circj.cj-10-0605] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The dynamics of oxidation/reduction control system activities using reactive oxygen metabolites (ROM) and biological antioxidant potential (BAP) in acute stage patients was evaulated to understand the mechanism of vascular injury and remodeling in Kawasaki disease (KD). METHODS AND RESULTS ROM, BAP, high-sensitivity C-reactive protein (hs-CRP), interleukin-1,2,6, and tumour necrosis factor-α in 19 KD patients were measured. ROM decreased in good correlation only with hs-CRP (P<0.05) at 2 weeks after intravenous immunoglobulin (IVIG). Patients were further classified as responding well (Group A) or responding poorly (Group B) to IVIG. Both treatment groups had significantly higher ROM values than the control group (P<0.01). ROM decreased in Group A both immediately and 2 weeks after the IVIG treatment (P<0.05), but it did not decrease in Group B until 2 weeks post-treatment (P<0.01). BAP levels were unremarkable in Group A, but were significantly lower in Group B than in both other groups (P<0.05). BAP increased in Group A 2 weeks after IVIG treatment (P<0.01), but remained low in Group B (P<0.01). CONCLUSIONS Acute stage KD patients suffer from obvious hyperoxidant stress, and improved in response to IVIG treatment in most patients. Blood BAP level might be a useful index for predicting responsiveness to IVIG the treatment.
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Affiliation(s)
- Tomoyo Yahata
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
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Banzai C, Yahata T, Tanaka K. Trends in the incidence of uterine cancer in Niigata, Japan: a population-based study from 1982 to 2007. EUR J GYNAECOL ONCOL 2011; 32:521-524. [PMID: 22053666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This study investigated trends in the incidence of uterine cancer in Japan. Data from the Gynecological Cancer Registry of Niigata comprising all new cases of uterine cancer registered for the entire female population aged 15 years and over a 25-year period were examined. The age-standardized ratio of carcinoma in situ has substantially increased among females < 40 years of age (from 3.8 (in the period of 1982-1989) to 40.9 (2000-2007). There was a significant trend in increasing incidence of invasive cervical cancer for those < 40 years of age (from 4.7 to 13.1), whereas a significant trend of decreasing incidence for the 50+ year age group. The ratios of corpus cancer were increased approximately two-folds both among the population aged < 50 years and those aged 50+ years and thus becoming equivalent to invasive cervical cancer. This prefecture-wide population-based study shows the practical trend in uterine cancer in Japanese females. The current health service must emphasize education among young adults concerning cervical cancer prevention while concentrating on screening. Avoiding risk factors, such as obesity, and increasing protective factors may lower risk for corpus cancer both in younger and older females.
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Affiliation(s)
- C Banzai
- Division of Obstetrics and Gynecology, Niigata University, Graduate School of Medical and Dental Sciences, Niigata, Japan
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Hamaoka A, Hamaoka K, Yahata T, Fujii M, Ozawa S, Toiyama K, Nishida M, Itoi T. Effects of HMG-CoA reductase inhibitors on continuous post-inflammatory vascular remodeling late after Kawasaki disease. J Cardiol 2010; 56:245-53. [DOI: 10.1016/j.jjcc.2010.06.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 05/21/2010] [Accepted: 06/09/2010] [Indexed: 10/19/2022]
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Banzai C, Yahata T, Fujita K, Ajioka Y, Kawahara M, Okamura H, Tanaka K. Recurrent borderline ovarian tumor presenting as a pedunculated polyp at colonoscopy. Endoscopy 2010; 42 Suppl 2:E69-70. [PMID: 20195970 DOI: 10.1055/s-0029-1215202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- C Banzai
- Division of Obstetrics and Gynecology, Department of Cellular Function, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi-dori, Niigata, Japan
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Sakata K, Hamaoka K, Ozawa S, Niboshi A, Yahata T, Fujii M, Hamaoka A, Toiyama K, Nishida M, Itoi T. Matrix Metalloproteinase-9 in Vascular Lesions and Endothelial Regulation in Kawasaki Disease. Circ J 2010; 74:1670-5. [DOI: 10.1253/circj.cj-09-0980] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Koichi Sakata
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Kenji Hamaoka
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Seiichiro Ozawa
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Ayumi Niboshi
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Tomoyo Yahata
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Maiko Fujii
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Akiko Hamaoka
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Kentarou Toiyama
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Masashi Nishida
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
| | - Toshiyuki Itoi
- Department of Pediatric Cardiology and Nephrology, Kyoto Prefectural University of Medicine Graduate School of Medical Science
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Niizuma S, Iwanaga Y, Yahata T, Goto Y, Kita T, Miyazaki S, Nakahama H. Plasma B-type natriuretic peptide levels reflect the presence and severity of stable coronary artery disease in chronic haemodialysis patients. Nephrol Dial Transplant 2008; 24:597-603. [DOI: 10.1093/ndt/gfn491] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Abstract
Primary retroperitoneal mucinous cystadenocarcinoma (PRMC) is an extremely rare tumor. Only 30 cases have been reported previously in the English literature, and little information is available concerning its treatment and prognosis. The patient was a 28-year-old woman, presenting with a right mid-abdominal tumor at 26 weeks of gestation. At 31 weeks of gestation, she underwent an exploratory laparotomy and was diagnosed with a PRMC. No disseminated tumor was observed, and an excision of only the tumor was performed. She had an uneventful vaginal delivery at 38 weeks of gestation and remains free of disease at 13 months after the operation. This report describes a case of PRMC associated with pregnancy. The optimal management of these retroperitoneal masses during pregnancy is discussed. Based on limited experience and the current literature, a PRMC with an intact capsule and no dissemination appears to have a good prognosis and can be treated by tumor excision alone in patients who wish to preserve fertility
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Abstract
Humanized mice are useful for studying human hematopoietic stem cells (HSCs) and their niche. In particular, clonal study of human HSC enables precise comparison of in vivo behavior between murine and human HSCs. A single HSC is able to reconstitute hematopoiesis even after serial transplantations in mice. While the life span of somatic cells is over that of individual in mice, this is not the case in humans. Clonal studies of human HSCs clearly demonstrated their aging in hosts. Since murine studies have demonstrated that HSCs are protected from aging by their niche in bone marrow, the humanizing niche model will reveal the precise mechanism by which human HSCs are protected from exhaustion in vivo. Direct transplantation of human mesenchymal stem cells into mouse bone marrow results in reconstitution of the functional human hematopoietic microenvironment comprised of pericytes, myofibroblasts, reticular cells, osteocytes in bone, bone-lining osteoblasts, and endothelial cells. These humanized mouse models are essential for testing whether the insights on hematopoiesis from mouse studies are applicable to humans before clinical application.
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Affiliation(s)
- K Ando
- Division of Hematopoiesis, Department of Hematology, Research Center of Regenerative Medicine, Tokai University School of Medicine, Bohseidai, Isehara, Kanagawa 259-1193, Japan.
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Hamaoka K, Niboshi A, Ozawa SI, Yahata T, Fujii M, Hamaoka A, Sakata K. P2-61 VASCULAR ENDOTHELIAL DYSFUNCTION AND OXIDATIVE STRESS IN ADULT PATIENTS WITH THE HISTORY OF KAWASAKI DISEASE. Int J Cardiol 2007. [DOI: 10.1016/s0167-5273(08)70663-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yahata T, Aoki Y, Tanaka K. Prediction of myometrial invasion in patients with endometrial carcinoma: comparison of magnetic resonance imaging, transvaginal ultrasonography, and gross visual inspection. EUR J GYNAECOL ONCOL 2007; 28:193-5. [PMID: 17624085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
This study evaluated the accuracy of magnetic resonance imaging (MRI) and transvaginal ultrasonography (TVUS) in preoperative detection of myometrial invasion by endometrial cancer. We also evaluated the results of gross visual inspection (GVI) of surgical specimens compared with histopathological diagnosis. One hundred and seventy-seven women underwent preoperative pelvic MRI, TVUS, and intraoperative GVI. Myometrial tumor invasion was evaluated histologically and classified as absent (depth a), superficial (depth b: < or = 50% invasion), or deep (depth c: > 50% invasion). The accuracy of MRI, TVUS, and GVI were 64.0, 66.9, and 63.8%, respectively. The positive predictive values of of each modality for depth a were 52.6, 51.4, and 52.2%, respectively. The accuracy of each in detecting deep myometrial invasion (depth c) were 84.0, 86.9, 83.1%. Although evaluation of depth a was limited with all modalities, MRI and TVUS were shown to be reliable for preoperative evaluation of deep myometrial invasion. The high accuracy of these three methods suggests that they are useful either interchangeably or in combination.
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Affiliation(s)
- T Yahata
- Department of Obstetrics & Gynecology, School of Medicine, Niigata University, Niigata, Japan
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Murakami H, Kawahara N, Yahata T, Yokoyama K, Komai K, Tomita K. Radiation myelopathy after radioactive iodine therapy for spine metastasis. Br J Radiol 2006; 79:e45-9. [PMID: 16861317 DOI: 10.1259/bjr/16265478] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
A case of radiation myelopathy after radioactive iodine therapy is reported. This is the first report to describe radiation myelopathy after I-131 therapy. A 62-year-old female with spinal metastasis of T10 received I-131 therapy. She presented with radiation myelopathy 34 months after the irradiation. We need to recognize the possibility of this serious complication even in the case of I-131 therapy. There is a risk of radiation myelopathy even after I-131 therapy, especially in cases with spinal cord compression such as this.
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Affiliation(s)
- H Murakami
- Department of Orthopaedic Surgery, Kanazawa University, Kanazawa, Japan
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22
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Abstract
BACKGROUND The identification and purification of keratinocyte stem cells (KSCs) that are capable of self-renewal and maintenance of differentiating cell populations could contribute both to our understanding of the biology of these cells, and to significant clinical applications, such as the culturing of keratinocytes for transplantation to severe burn wounds. Here, we report the detection of CD90(+) cells in cultured normal human epidermal keratinocytes and adult skin. OBJECTIVES To investigate the biological function of CD90(+) and CD90(-) keratinocytes. METHODS CD90(+) and CD90(-) keratinocytes were purified from adult skin and cultured keratinocytes using fluorescent activated cell sorting, and their biological abilities were analysed using both in vitro and in vivo assays. RESULTS Flow cytometry (FCM) analysis identified approximately 18% of post-primary neonatal keratinocytes as CD90(+). However, during expansion of the culture, the expression level of CD90 rapidly decreased to about 2.5% at passage 10, while most of the keratinocytes maintained expression of alpha6 integrin. Purified CD90(+) keratinocytes demonstrated a sixfold higher cell growth rate than CD90(-) cells and the ability to form large (over 3 mm in diameter) colonies. We then quantitatively evaluated both populations using a previously described in vivo human epidermal cyst formation assay. Enhanced green fluorescent protein (EGFP)-labelled CD90(+) or CD90(-) keratinocytes were subcutaneously injected into nonobese diabetic/severe combined immunodeficient (NOD/SCID) mice. Six weeks after transplantation, EGFP(+) cell clusters in human epidermal cysts were evaluated using image analysis software. EGFP(+) cell cluster areas in the basal layer, derived from EGFP(+) CD90(+) cells, were eightfold larger than clusters of EGFP(+) CD90(-) cells. Furthermore, immunohistochemical staining and FCM analysis indicated that CD90 was expressed in most of the basal layer of the normal human epidermis. CONCLUSIONS These results indicated that CD90 is a useful marker for the detection of human KSC-enriched populations in cultured human keratinocytes.
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Affiliation(s)
- Y Nakamura
- Division of Hematopoiesis, Research Center for Regenerative Medicine, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan.
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Yahata T. Long-term conservative therapy for endometrial adenocarcinoma in young women. Hum Reprod 2006. [DOI: 10.1093/humrep/dei445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
BACKGROUND To evaluate the efficacy and safety of long-term conservative therapy with medroxyprogesterone acetate (MPA) for endometrial carcinoma in young patients who had experienced failure after initial therapy or relapse, we reviewed the clinical and pathologic records of eight patients diagnosed with well-differentiated endometrial adenocarcinoma without myometrial invasion who were treated with MPA for over 6 months because of treatment failure or relapse. RESULTS The average duration of MPA treatment was 22 months. All patients were followed-up for a mean of 76.5 months. Seven patients responded to initial MPA treatment within a period of 14 months (mean, 7.9 months). All these patients experienced relapse and the mean time to relapse was 11.6 months (range, 4-33 months). All six patients with relapse were treated with additional treatments of MPA, and all but one responded to this treatment within a period of 16 months (mean, 8.0 months). Six patients ultimately underwent hysterectomy. All presented well-differentiated endometrioid adenocarcinomas without extrauterine disease. Three became pregnant and two delivered full-term normal infants. No patient died of the disease. CONCLUSION Although lesions are expected to disappear with prolonged MPA treatment, this form of progestin therapy is hazardous because recurrence occurs frequently. Only strictly selected patients should therefore be indicated for long-term MPA treatment and careful evaluation before and after treatment should be performed.
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Affiliation(s)
- T Yahata
- Department of Obstetrics & Gynecology, School of Medicine, Niigata University, Niigata city, Niigata, Japan.
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25
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Kashima K, Aoki Y, Yahata T, Tanaka K. Complete response to docetaxel and carboplatin combination chemotherapy for a stage IV uterine papillary serous carcinoma: a case report. Int J Gynecol Cancer 2005; 15:1199-202. [PMID: 16343213 DOI: 10.1111/j.1525-1438.2005.00197.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We report a case of a stage IV uterine papillary serous carcinoma (UPSC) with multiple organ metastases. The patient was treated with docetaxel and carboplatin combination chemotherapy. After five courses, uterine tumor, Douglas tumor, lymphadenopathy, and distant metastases on magnetic resonance imaging or computed tomography scan were completely resoluted. Moreover, endometrial biopsy showed no carcinoma tissues after six courses. We suggest that this regimen may be effective for treatment of advanced-stage UPSC.
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Affiliation(s)
- K Kashima
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
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26
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Aoki Y, Amikura T, Nishikawa N, Sekine M, Yahata T, Fujita K, Tanaka K. Irinotecan hydrochloride (CPT-11) and mitomycin C in docetaxel-carbopoatin (DJ) refractory ovarian cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.5143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Y. Aoki
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - T. Amikura
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - N. Nishikawa
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - M. Sekine
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - T. Yahata
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - K. Fujita
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - K. Tanaka
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
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Yahata T, Quan J, Tamura N, Nagata H, Kurabayashi T, Tanaka K. Association between single nucleotide polymorphisms of estrogen receptor alpha gene and efficacy of HRT on bone mineral density in post-menopausal Japanese women. Hum Reprod 2005; 20:1860-6. [PMID: 15831512 DOI: 10.1093/humrep/deh895] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Although HRT for post-menopausal women can protect against bone loss, variations in bone responses exist. We studied whether single nucleotide polymorphisms (SNP) of the estrogen receptor-alpha (ERalpha) gene contribute to the effect of HRT on lumbar spine bone mineral density (BMD). METHODS Subjects were 84 post-menopausal women who had been taking HRT for 3 years to treat osteopenia or osteoporosis. Eighteen SNP in the ERalpha gene were characterized by a single nucleotide primer extension assay. RESULTS Genotyping of the 84 individuals revealed that all SNP were quite common, the minor allele frequency being > or = 20%. A SNP in intron 6 (IVS6+14144) was significantly associated with the response to HRT for the first 3 years after starting treatment (P = 0.043, 0.025 and 0.032 for the first, second and third years respectively). Haplotype analysis revealed that a combination of SNP IVS6+14144 and IVS4+4238 was significantly correlated with the response to HRT; women with haplotype G-G (IVS6 14144-IVS4 4238) showed a significantly higher response (P = 0.014, 0.043 and 0.010 for the first second and third year respectively). CONCLUSIONS These results suggest that a specific SNP and the haplotype of the selected SNP could be used to predict the effect of HRT on lumbar BMD.
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Affiliation(s)
- T Yahata
- Department of Obstetrics & Gynecology, Niigata University School of Medicine, 1-757 Asahimachi-dori, Niigata 951-8510, Japan.
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Abstract
Cases of metastatic placental site trophoblastic tumor (PSTT) have a very poor prognosis because these tumors tend to be less sensitive to chemotherapy than other types of gestational trophoblastic disease. We describe the case of a 25-year-old woman who presented with occipital tumor and abnormal vaginal bleeding. Hysterectomy, bilateral salpingo-oophorectomy, and occipital tumor removal revealed a primary PSTT in the uterus, with ovarian and occipital subaponeurotic metastases. She received etoposide, methotrexate, actinomycin-D/cyclophosphamide, vincristine chemotherapy and had a complete clinical remission. Fifteen months later, she had a recurrent subaponeurotic occipital tumor invading the cranium and underwent tumor removal along with cranial bone followed by local irradiation. She was then treated with etoposide, cis-platinum/etoposide, methotrexate, actinomycin-D chemotherapy and again had a remission for 5 months. The patient, however, had a left parietal subaponeurotic tumor, invading the dura mater, and received local irradiation. Soon after, she developed left orbital bone metastasis, treated by local irradiation. These bone metastases responded to the radiation completely. However, multiple organ metastases were found, and she died of the disease. This represents the first case of PSTT with initial subaponeurotic metastasis in a living patient. New modalities of treatment for high-risk or metastatic PSTT need to be developed.
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Affiliation(s)
- Y Aoki
- Division of Molecular Genetics, Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
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29
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Kobayashi N, Nishida M, Aoyama M, Yokoi K, Yahata T, Tatsujiro T, Sakata K, Shiraishi I, Itoi T, Hamaoka K. Rapidly progressive IgA nephropathy. Indian J Pediatr 2005; 72:257-60. [PMID: 15812125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
A 14-year-old boy presented with macroscopic hematuria and a rapid deterioration in renal function. Percutaneous renal biopsy demonstrated severe crescentic IgA nephropathy (IgAN) with extensive (88%) glomerular crescent formation. After started intravenous administration of high-dose pulse methylprednisolone, severe nausea and general malaise accompanied by a rapid increase in Blood Urea Nitrogen (BUN) and serum creatinine levels appeared, however, the renal function ameliorated rapidly and fully recovered by following oral administration of corticosteroid. The clinical presentation of our case seems to be very remarkable compared to previously reported cases of rapidly progressive IgAN.
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Affiliation(s)
- Naho Kobayashi
- Department of Pediatric Cardiology, University of Medicine Graduate School of Medical Science, Kyoto, Japan
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30
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Abstract
AIM We elucidated the mitochondrial functions of brown adipocytes in intracellular signalling, paying attention to mitochondrial activity and noradrenaline- and forskolin-induced Ca(2+) mobilizations in cold-acclimated rats. METHODS A confocal laser-scanning microscope of brown adipocytes from warm- or cold-acclimated rats was employed using probes rhodamine 123 which is a mitochondria-specific cationic dye, and the cytoplasmic and mitochondrial Ca(2+) probes fluo-3 and rhod-2. X-ray microanalysis was also studied. RESULTS The signal of rhodamine 123 in the cells was decreased by antimycin A which effect was less in cold-acclimated cells than warm-acclimated cells. Cytoplasmic and mitochondrial Ca(2+) in cold-acclimated brown adipocytes double-loaded with fluo-3 and rhod-2 were measured. Noradrenaline induced the rise in cytoplasmic Ca(2+) ([Ca(2+)](cyto)) followed by mitochondrial Ca(2+) ([Ca(2+)](mito)), the effect being transformed into an increase in [Ca(2+)](cyto) whereas a decrease in [Ca(2+)](mito) by antimycin A or carbonyl cyanide m-chlorophenylhydrazone (CCCP). Antimycin A induced small Ca(2+) release from mitochondria. CCCP induced Ca(2+) release from mitochondria only after the cells were stimulated with noradrenaline. Further, forskolin also elicited an elevation in [Ca(2+)](cyto) followed by [Ca(2+)](mito) in the cells. The Ca measured by X-ray microanalysis was higher both in the cytoplasm and mitochondria whereas K was higher in the mitochondria of cold-acclimated cells in comparison to warm-acclimated cells. CONCLUSIONS These results suggest that noradrenaline and forskolin evoked an elevation in [Ca(2+)](cyto) followed by [Ca(2+)](mito), in which H(+) gradient across the inner membrane is responsible for the accumulation of calcium on mitochondria. Moreover, cAMP also plays a role in intracellular and mitochondrial Ca(2+) signalling in cold-acclimated brown adipocytes.
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Affiliation(s)
- I Nakagaki
- Department of Physiology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
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31
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Aoki Y, Kase H, Kashima K, Yahata T, Tanaka K. Placental site trophoblastic tumor presenting as subaponeurotic metastasis. Int J Gynecol Cancer 2005. [DOI: 10.1136/ijgc-00009577-200503000-00034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Cases of metastatic placental site trophoblastic tumor (PSTT) have a very poor prognosis because these tumors tend to be less sensitive to chemotherapy than other types of gestational trophoblastic disease. We describe the case of a 25-year-old woman who presented with occipital tumor and abnormal vaginal bleeding. Hysterectomy, bilateral salpingo-oophorectomy, and occipital tumor removal revealed a primary PSTT in the uterus, with ovarian and occipital subaponeurotic metastases. She received etoposide, methotrexate, actinomycin-D/cyclophosphamide, vincristine chemotherapy and had a complete clinical remission. Fifteen months later, she had a recurrent subaponeurotic occipital tumor invading the cranium and underwent tumor removal along with cranial bone followed by local irradiation. She was then treated with etoposide, cis-platinum/etoposide, methotrexate, actinomycin-D chemotherapy and again had a remission for 5 months. The patient, however, had a left parietal subaponeurotic tumor, invading the dura mater, and received local irradiation. Soon after, she developed left orbital bone metastasis, treated by local irradiation. These bone metastases responded to the radiation completely. However, multiple organ metastases were found, and she died of the disease. This represents the first case of PSTT with initial subaponeurotic metastasis in a living patient. New modalities of treatment for high-risk or metastatic PSTT need to be developed
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32
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Aoki Y, Yahata T, Fujita K, Amikura T, Obata H, Sekine M, Tanaka K. Irrinotecan hydrochloride (CPT-11) and mitomycin C in ovarian clear cell adenocarcinoma. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.5129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Y. Aoki
- Niigata University Graduate School of Medical and, Niigata, Japan
| | - T. Yahata
- Niigata University Graduate School of Medical and, Niigata, Japan
| | - K. Fujita
- Niigata University Graduate School of Medical and, Niigata, Japan
| | - T. Amikura
- Niigata University Graduate School of Medical and, Niigata, Japan
| | - H. Obata
- Niigata University Graduate School of Medical and, Niigata, Japan
| | - M. Sekine
- Niigata University Graduate School of Medical and, Niigata, Japan
| | - K. Tanaka
- Niigata University Graduate School of Medical and, Niigata, Japan
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Shimauchi Y, Yahata T, Matsubara S, Araki M. Role of tissue interaction between pineal primordium and neighboring tissues in avian pineal morphogenesis studied by intraocular transplantation. Dev Genes Evol 2002; 212:319-29. [PMID: 12185485 DOI: 10.1007/s00427-002-0236-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2001] [Accepted: 03/03/2002] [Indexed: 10/27/2022]
Abstract
Tissue interactions play an essential role in organogenesis during embryonic development. However, virtually no attempts have been made to study the role of tissue interaction in pineal development. In the present study we examined the inductive role of the epidermis and mesenchyme in the morphogenesis of quail pineal glands. The pineal rudiment is first observed at embryonic day 2 (E2: 2 days of incubation) at the dorsal midline of the diencephalon as a short semi-spherical protrusion. Electron microscopic observations revealed that no mesenchymal cells are found between the epidermis and the distal end of the E2 pineal primordium but that a thin layer of mesenchymal cells separate the epidermis from the pineal primordium at E3. Small pieces containing pineal rudiment were cut off from E2 or E3 embryos. They were treated with enzymes to eliminate the epidermis and/or mesenchyme, grafted into E5 chicken eyes, and cultured there for 1 week. When E3 pineal rudiment was treated with Dispase to remove the epidermis, the pineal gland developed normally. When the rudiment was further treated with collagenase to remove the surrounding mesenchymal cells, a multi-follicular structure was still formed, but to a lesser extent than when rudiments were treated with Dispase alone. When E2 quail pineal rudiment with the epidermis was grafted without any treatment, a multi-follicular structure developed which morphologically resembled embryonic pineal organs. When the epidermis was removed from E2 rudiments by Dispase, a single large vesicular structure was formed. These results suggest that the overlying epidermis and/or mesenchymal cells play some inductive role in the initial pineal development, while the mesenchymal tissue plays an important role in pineal follicular formation later during development. Since only a few experimental studies have been done to examine pineal morphogenesis, the present study provides fundamental insights into avian pineal development.
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Affiliation(s)
- Yoshie Shimauchi
- Department of Arts and Sciences, Osaka Kyoiku University, Kashihara, Japan
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Yahata T, Shao W, Endoh H, Hur J, Coser KR, Sun H, Ueda Y, Kato S, Isselbacher KJ, Brown M, Shioda T. Selective coactivation of estrogen-dependent transcription by CITED1 CBP/p300-binding protein. Genes Dev 2001; 15:2598-612. [PMID: 11581164 PMCID: PMC312794 DOI: 10.1101/gad.906301] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
CITED1, a CBP/p300-binding nuclear protein that does not bind directly to DNA, is a transcriptional coregulator. Here, we show evidence that CITED1 functions as a selective coactivator for estrogen-dependent transcription. When transfected, CITED1 enhanced transcriptional activation by the ligand-binding/AF2 domain of both estrogen receptor-alpha (ERalpha) and ERbeta in an estrogen-dependent manner, but it affected transcriptional activities of other nuclear receptors only marginally. CITED1 bound directly to ERalpha in an estrogen-dependent manner through its transactivating domain, and this binding activity was separable from its p300-binding activity. CITED1 was strongly expressed in nulliparous mouse mammary epithelial cells and, when expressed in ER-positive MCF-7 breast cancer cells by transduction, exogenous CITED1 enhanced sensitivity of MCF-7 cells to estrogen, stabilizing the estrogen-dependent interaction between p300 and ERalpha. The estrogen-induced expression of the transforming growth factor-alpha (TGF-alpha) mRNA transcript was enhanced in the CITED1-expressing MCF-7 cells, whereas estrogen-induced expression of the mRNA transcripts for progesterone receptor or pS2 was not affected. Chromatin immunoprecipitation assay revealed that endogenous CITED1 is recruited to the chromosomal TGF-alpha promoter in MCF-7 cells in an estrogen-dependent manner but not to the pS2 promoter. These results suggest that CITED1 may play roles in regulation of estrogen sensitivity in a gene-specific manner.
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Affiliation(s)
- T Yahata
- Laboratory of Tumor Biology, Massachusetts General Hospital Cancer Center, Charlestown, MA 02129, USA
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35
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Nakui M, Ohta A, Sekimoto M, Sato M, Iwakabe K, Yahata T, Kitamura H, Koda T, Kawano T, Makuuchi H, Taniguchi M, Nishimura T. Potentiation of antitumor effect of NKT cell ligand, alpha-galactosylceramide by combination with IL-12 on lung metastasis of malignant melanoma cells. Clin Exp Metastasis 2001; 18:147-53. [PMID: 11235990 DOI: 10.1023/a:1006715221088] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The combined therapeutic effect of natural killer T (NKT) cell ligand alpha-galactosylceramide (alpha-GalCer) and IL-12 against highly metastatic B16-BL6-HM melanoma cells was investigated. In comparison with a single administration of alpha-GalCer or IL-12, the combined treatment of tumor-bearing mice with alpha-GalCer plus IL-12 caused a super-induction of serum IFN-gamma levels, though alpha-GalCer-induced IL-4 production was rather inhibited. In parallel with the augmented IFN-gamma production, the natural killing activity against YAC-1 cells and syngeneic B16-BL6-HM melanoma was greatly augmented by the combined therapy. The major effector cells responsible for natural killing activity induced by alpha-GalCer plus IL-12 were enriched in both NK1.1+ TCRalphabeta+ NKT cells and NK1.1+ TCRalphabeta- NK cells. The preventing effect of alpha-GalCer or IL-12 alone against lung metastasis of B16-BL6-HM was also enhanced by the combination therapy. The antitumor activity of alpha-GalCer was totally abolished in NKT-deficient mice. However, IL-12-induced antitumor activity was not eliminated in NKT-deficient mice though it was inhibited by anti-asialo GM1 Ab treatment. These findings suggested that alpha-GalCer synergistically act with IL-12 to activate both NKT cells and NK cells, which may play a critical role in the strong prevention of distant tumor metastasis at early stages of tumor-bearing. These data will provide a novel tool for the prevention of tumor metastasis using NKT-specific ligands alpha-GalCer and IL-12.
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Affiliation(s)
- M Nakui
- Section of Genetic Engineering, Research Center for Genetic Engineering and Cell Transplantation, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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Honda A, Kurabayashi T, Yahata T, Tomita M, Matsushita H, Takakuwa K, Tanaka K. Effects of pregnancy and lactation on trabecular bone and marrow adipocytes in rats. Calcif Tissue Int 2000; 67:367-72. [PMID: 11136534 DOI: 10.1007/s002230001145] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Changes in the structure and metabolism of trabecular bone and marrow adipocytes in rats during pregnancy and the early stage of postpartum were evaluated by investigating bone mineral density (BMD) and bone and fat histomorphometry. Forty-nine female virgin Sprague-Dawley rats aged 200 days were mated and divided into seven groups: (1) beginning controls; (2) antepartum-on-day-7; (3) antepartum-on-day-21; (4) nonlactating on the fourth postpartum day; (5) nonlactating on the sixth postpartum day; (6) nonlactating on the eighth postpartum day; (7) lactating on the eight postpartum day. The significant decreases occurred in the trabecular bone at the end of pregnancy and lactation, and the bone formation increases and the bone structure is almost recovered in nonlactating rats within 6 days of postpartum. The percent adipocyte volume, adipocyte number, and unit adipocyte volume significantly decreased during postpartum whether lactating or nonlactating, and they significantly showed negative correlation with the osteoid volume values. The serum triglyceride value and body weight of the seven groups correlated significantly with the unit adipocyte volume value (r = 0.49, P = 0.004; r = 0.58, P = 0.0005, respectively). We concluded that bone resorption and formation are regulated separately during late pregnancy and lactation and that the recovery of BMD from lactation appears to rely on an acceleration of bone formation. Furthermore, the metabolism of the marrow adipocyte may be correlated with bone formation rates, serum triglyceride value, and body weight during pregnancy and early stage of puerperium.
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Affiliation(s)
- A Honda
- Department of Obstetrics and Gynecology, Niigata University School of Medicine, 1-757, Asahimachi-dori, Niigata-city, Niigata 951-8510, Japan
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Yahata T, Andriole S, Isselbacher KJ, Shioda T. Estimation of baculovirus titer by beta-galactosidase activity assay of virus preparations. Biotechniques 2000; 29:214-5. [PMID: 10948416 DOI: 10.2144/00292bm01] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- T Yahata
- Massachusetts General Hospital, Cancer Center, Charlestown, USA
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38
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Nishimura T, Kitamura H, Iwakabe K, Yahata T, Ohta A, Sato M, Takeda K, Okumura K, Van Kaer L, Kawano T, Taniguchi M, Nakui M, Sekimoto M, Koda T. The interface between innate and acquired immunity: glycolipid antigen presentation by CD1d-expressing dendritic cells to NKT cells induces the differentiation of antigen-specific cytotoxic T lymphocytes. Int Immunol 2000; 12:987-94. [PMID: 10882410 DOI: 10.1093/intimm/12.7.987] [Citation(s) in RCA: 164] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In vivo administration of NKT cell ligand, alpha-galactosylceramide (alpha-GalCer), caused the activation of NKT cells to induce a strong NK activity and cytokine production by CD1d-restricted mechanisms. Surprisingly, we also found that alpha-GalCer induced the activation of immunoregulatory cells involved in acquired immunity. Specifically, in vivo administration of alpha-GalCer resulted in the induction of the early activation marker CD69 on CD4(+) T cells, CD8(+) T cells and B cells in addition to macrophages and NKT cells. However, no significant induction of CD69 was observed on cells from CD1d- or V(alpha)14 NKT-deficient mice, indicating an essential role for the interaction between NKT cells and CD1d-expressing dendritic cells (DC) in the activation of acquired immunity in response to alpha-GalCer. Indeed, in vivo injection of alpha-GalCer resulted not only in the activation of NKT cells but also in the generation of CD69(+)CD8(+) T cells possessing both cytotoxic T lymphocyte (CTL) activity and IFN-gamma-producing ability. Tumor-specific CTL generation was also accelerated by alpha-GalCer. The critical role of CD40-CD40 ligand (CD40L)-mediated NKT-DC interaction during the development of CD69(+)CD8(+) CTL by alpha-GalCer was demonstrated by blocking experiments using anti-CD40L mAb. These findings provide direct evidence for a critical role of CD1d-restricted NKT cells and DC in bridging innate and acquired immunity.
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MESH Headings
- Adjuvants, Immunologic/pharmacology
- Animals
- Antigen Presentation
- Antigens, CD/analysis
- Antigens, CD1/analysis
- Antigens, CD1d
- Antigens, Differentiation, T-Lymphocyte/analysis
- CD40 Antigens/physiology
- CD40 Ligand
- Cell Differentiation
- Dendritic Cells/physiology
- Galactosylceramides/pharmacology
- Interferon-gamma/biosynthesis
- Killer Cells, Natural/physiology
- Lectins, C-Type
- Membrane Glycoproteins/physiology
- Mice
- Mice, Inbred C57BL
- T-Lymphocytes, Cytotoxic/physiology
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Affiliation(s)
- T Nishimura
- Division of Immunoregulation, Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan
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39
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Yahata T, Yahata C, Ohta A, Sekimoto M, Kitamura H, Iwakabe K, Habu S, Azuma S, Nakui M, Sato M, Koda T, Nishimura T. Interleukin-4-dependent induction of preproenkephalin in antigen-specific T helper-type 2 (Th2) cells. J Neuroimmunol 2000; 105:103-8. [PMID: 10742550 DOI: 10.1016/s0165-5728(00)00188-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Naive Th cells obtained from OVA(323-339)-specific DO11.10 TCR-Tg mice did not express preproenkephalin (PPE) mRNA. However, culture of naive Th cells with OVA(323-339) peptide (OVA-pep) plus IL-2 under Th2-inducing conditions for 7 days resulted in an induction of PPE mRNA. The PPE mRNA was also induced by culturing with OVA-pep plus IL-2 (neutral condition). However, PPE mRNA induction under neutral conditions was totally abrogated by addition of anti-IL-4 mAb. The existence of methionine-enkephalin was also demonstrated in peptidase-digested peptides derived from Th2 cell lysate. These results demonstrate that IL-4 is a critical factor for the induction of PPE mRNA in freshly expanded antigen-specific Th2 cells.
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Affiliation(s)
- T Yahata
- Section of Genetic Engineering, Research Center for Genetic Engineering and Cell Transplantation, Tokai University School of Medicine, Bohseidai, Isehara, Japan
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40
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Shioda T, Andriole S, Yahata T, Isselbacher KJ. A green fluorescent protein-reporter mammalian two-hybrid system with extrachromosomal maintenance of a prey expression plasmid: application to interaction screening. Proc Natl Acad Sci U S A 2000; 97:5220-4. [PMID: 10805780 PMCID: PMC25809 DOI: 10.1073/pnas.97.10.5220] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An improved mammalian two-hybrid system designed for interaction trap screening is described in this paper. CV-1/EBNA-1 monkey kidney epithelial cells expressing Epstein-Barr virus nuclear antigen 1 (EBNA-1) were stably transfected with a reporter plasmid for GAL4-dependent expression of the green fluorescent protein (GFP). A resulting clone, GB133, expressed GFP strongly when transfected transiently with transcriptional activators fused to GAL4 DNA-binding domain with minimal background GFP expression. GB133 cells maintained plasmids containing the OriP Epstein-Barr virus replication origin that directs replication of plasmids in mammalian cells in the presence of the EBNA-1 protein. GB133 cells transfected stably with a model bait expressed GFP when further transfected transiently with an expression plasmid for a known positive prey. When the bait-expressing GB133 cells were transfected transiently with an OriP-containing expression plasmid for the positive prey together with excess amounts of empty vector, cells that received the positive prey were readily identified by green fluorescence in cell culture and eventually formed green fluorescent microcolonies, because the prey plasmid was maintained by the EBNA-1/Ori-P system. The green fluorescent microcolonies were harvested directly from the culture dishes under a fluorescence microscope, and total DNA was then prepared. Prey-encoding cDNA was recovered by PCR using primers annealing to the vector sequences flanking the insert-cloning site. This system should be useful in mammalian cells for efficient screening of cDNA libraries by two-hybrid interaction.
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Affiliation(s)
- T Shioda
- Department of Tumor Biology, The Massachusetts General Hospital Cancer Center, Charlestown, MA 02129, USA.
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41
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Fujio K, Nosaka T, Kojima T, Kawashima T, Yahata T, Copeland NG, Gilbert DJ, Jenkins NA, Yamamoto K, Nishimura T, Kitamura T. Molecular cloning of a novel type 1 cytokine receptor similar to the common gamma chain. Blood 2000; 95:2204-10. [PMID: 10733486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
In a complementary DNA (cDNA) screening of murine Th2-skewed lymphocytes with our recently developed signal sequence trap method termed SST-REX, a novel type 1 cytokine receptor, Delta1 (delta1), was identified. Although delta1 is ubiquitously expressed in multiple tissues, the expression level is higher in Th2-skewed lymphocytes than in Th1-skewed ones. The delta1 cDNA encodes a 359-amino acid type 1 membrane protein. The extracellular domain of 206 amino acids showed 24% identity with the murine common gamma receptor that is shared among the receptors for interleukin(IL)-2, IL-4, IL-7, IL-9, and IL-15. The membrane-proximal region of delta1 includes a box1 motif, which is important for association with Janus kinases (JAKs), and showed a significant homology with that of the mouse erythropoietin receptor (EPOR). A box2 motif was also found in close proximity to the box1 region. Dimerization of the cytoplasmic region of delta1 alone did not transduce proliferative signals in IL-3-dependent cell lines. However, the membrane-proximal region of delta1 could substitute for that of human EPOR in transmitting proliferative signals and activating JAK2. These results suggest that delta1 is a subunit of cytokine receptor that may be involved in multiple receptor systems and play a regulatory role in the immune system and hematopoiesis.
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Affiliation(s)
- K Fujio
- Department of Hematopoietic Factors, the Institute of Medical Science, the University of Tokyo, Tokyo, Japan
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42
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Yahata T, de Caestecker MP, Lechleider RJ, Andriole S, Roberts AB, Isselbacher KJ, Shioda T. The MSG1 non-DNA-binding transactivator binds to the p300/CBP coactivators, enhancing their functional link to the Smad transcription factors. J Biol Chem 2000; 275:8825-34. [PMID: 10722728 DOI: 10.1074/jbc.275.12.8825] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The MSG1 nuclear protein has a strong transcriptional activating activity but does not bind directly to DNA. When cotransfected, MSG1 enhances transcription mediated by the Smad transcription factors in mammalian cells in a manner dependent on ligand-induced Smad hetero-oligomerization. However, the mechanism of this MSG1 effect has been unknown. We now show that MSG1 directly binds to the p300/cAMP-response element-binding protein-binding protein (CBP) transcriptional coactivators, which in turn bind to the Smads, and enhances Smad-mediated transcription in a manner dependent on p300/CBP. The C-terminal transactivating domain of MSG1 is required for binding to p300/CBP and enhancement of Smad-mediated transcription; the viral VP16 transactivating domain could not substitute for it. In the N-terminal region of MSG1, we identified a domain that is necessary and sufficient to direct the specific interaction of MSG1 with Smads. We also found that the Hsc70 heat-shock cognate protein also forms complex with MSG1 in vivo, suppressing both binding of MSG1 to p300/CBP and enhancement of Smad-mediated transcription by MSG1. These results indicate that MSG1 interacts with both the DNA-binding Smad proteins and the p300/CBP coactivators through its N- and C-terminal regions, respectively, and enhances the functional link between Smads and p300/CBP.
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Affiliation(s)
- T Yahata
- Laboratory of Tumor Biology, Massachusetts General Hospital Cancer Center, Massachusetts General Hospital-East, Charlestown, Massachusetts 02129, USA
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43
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de Caestecker MP, Yahata T, Wang D, Parks WT, Huang S, Hill CS, Shioda T, Roberts AB, Lechleider RJ. The Smad4 activation domain (SAD) is a proline-rich, p300-dependent transcriptional activation domain. J Biol Chem 2000; 275:2115-22. [PMID: 10636916 DOI: 10.1074/jbc.275.3.2115] [Citation(s) in RCA: 142] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Transforming growth factor-beta (TGF-beta) family members signal through a unique set of intracellular proteins called Smads. Smad4, previously identified as the tumor suppressor DPC4, is functionally distinct among the Smad family, and is required for the assembly and transcriptional activation of diverse, Smad-DNA complexes. We previously identified a 48-amino acid proline-rich regulatory element within the middle linker domain of this molecule, the Smad4 activation domain (SAD), which is essential for mediating these signaling activities. We now characterize the functional activity of the SAD. Mutants lacking the SAD are still able to form complexes with other Smad family members and associated transcription factors, but cannot activate transcription in these complexes. Furthermore, the SAD itself is able to activate transcription in heterologous reporter assays, identifying it as a proline-rich transcriptional activation domain, and indicating that the SAD is both necessary and sufficient to activate Smad-dependent transcriptional responses. We show that transcriptional activation by the SAD is p300-dependent, and demonstrate that this activity is associated with a physical interaction of the SAD with the amino terminus of p300. These data identify a novel function of the middle linker region of Smad4, and define the role of the SAD as an important locus determining the transcriptional activation of the Smad complex.
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Affiliation(s)
- M P de Caestecker
- Laboratory of Cell Regulation and Carcinogenesis, NCI, National Institutes of Health, Bethesda, Maryland 20892-5055, USA
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44
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Kitamura H, Ohta A, Sekimoto M, Sato M, Iwakabe K, Nakui M, Yahata T, Meng H, Koda T, Nishimura S, Kawano T, Taniguchi M, Nishimura T. alpha-galactosylceramide induces early B-cell activation through IL-4 production by NKT cells. Cell Immunol 2000; 199:37-42. [PMID: 10675273 DOI: 10.1006/cimm.1999.1602] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
alpha-Galactosylceramide (alpha-GalCer), a glycolipid antigen, specifically activates natural killer T (NKT) cells by a CD1d-restricted mechanism. In this work, we found that in vivo administration of alpha-GalCer resulted in the activation of B cells in addition to NKT cells, namely, alpha-GalCer administration caused upregulation of the early activation marker, CD69, on both NKT and B cells. In addition, expression of B7.2 and I-A(b) on B cells was greatly upregulated by alpha-GalCer. However, serum levels of IgE, IgG1, and IgG2a were not significantly changed within 48 h. In the present experiments, it was also demonstrated that the upregulation of CD69 expression by alpha-GalCer was strongly blocked by anti-IL-4 monoclonal antibody. Moreover, B-cell activation by alpha-GalCer was not observed in NKT-deficient mice. These results suggested that antigen-stimulated NKT cells might play a critical role not only in early defense mechanisms but also in early B-cell activation through IL-4 production.
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Antigens/administration & dosage
- Antigens/immunology
- Antigens, CD/metabolism
- Antigens, Differentiation, T-Lymphocyte/metabolism
- B-Lymphocytes/immunology
- B-Lymphocytes/metabolism
- Cells, Cultured
- Coculture Techniques
- Galactosylceramides/administration & dosage
- Galactosylceramides/antagonists & inhibitors
- Galactosylceramides/immunology
- Gene Deletion
- Immunoglobulin E/biosynthesis
- Immunoglobulin E/blood
- Immunoglobulin G/biosynthesis
- Immunoglobulin G/blood
- Interferon-gamma/biosynthesis
- Interferon-gamma/blood
- Interferon-gamma/immunology
- Interleukin-4/biosynthesis
- Interleukin-4/blood
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Lectins, C-Type
- Lymphocyte Activation/immunology
- Lymphocyte Subsets/immunology
- Lymphocyte Subsets/metabolism
- Mice
- Mice, Inbred C57BL
- Receptors, Antigen, T-Cell/immunology
- Receptors, Immunologic/immunology
- Up-Regulation/drug effects
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Affiliation(s)
- H Kitamura
- Section of Genetic Engineering, Tokai University School of Medicine, Bohseidai, Isehara, 259-1193, Japan
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45
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Kyo S, Maeda H, Yahata T, Kawashima T, Takada T, Ohnishi K, Adachi K. [Right tracheal bronchus with anomalous ramification of the bronchial artery disclosed during an episode of hemoptysis]. Nihon Kokyuki Gakkai Zasshi 2000; 38:30-3. [PMID: 10723948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
A 63-year-old woman was referred to our hospital on June 18th, 1998 during an episode of hemoptysis that had lasted for 6 days. She had no hemorrhagic diathesis and no history of pulmonary disease. Chest X-ray films disclosed a ground-glass opacity in the right upper lung field. Bronchoscopic examination revealed bleeding from an anomalous ectopic orifice on the right lateral trachea, about 1 cm above the carina. Chest computed tomographic examinations by conventional and spiral methods readily disclosed an ectopic bronchus. Bronchial arteriography showed that the tracheal bronchus was fed by a branched vessel of the thyrocervical artery arising from the brachiocephalic artery. Atypical mycobacterium was detected in bronchoalveolar lavage fluid from the ectopic bronchus. A shunt had formed with the pulmonary artery and peripheral parts of the bronchial artery that fed the tracheal bronchus. It was speculated that the hemoptysis in this case might be due to the combined phenomena of infection and abnormal vessel formation in the tracheal bronchus. In our patient, the system of blood supply to the tracheal bronchus may have been a manifestation of atavism because it closely resembled the circulatory structure of the tracheal bronchi normally observed in sheep and giraffes. The tracheal bronchus should be taken into consideration as a potential cause of hemoptysis, inflammatory changes, and atelectasis during intubation.
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Affiliation(s)
- S Kyo
- Department of Respiratory, Kobe Rosai Hospital, Japan
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46
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Nishimura T, Iwakabe K, Sekimoto M, Ohmi Y, Yahata T, Nakui M, Sato T, Habu S, Tashiro H, Sato M, Ohta A. Distinct role of antigen-specific T helper type 1 (Th1) and Th2 cells in tumor eradication in vivo. J Exp Med 1999; 190:617-27. [PMID: 10477547 PMCID: PMC2195611 DOI: 10.1084/jem.190.5.617] [Citation(s) in RCA: 334] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The role of T helper type 1 (Th1) and Th2 cells in tumor immunity was investigated using Th cells induced from ovalbumin (OVA)-specific T cell receptor transgenic mice. Although Th1 cells exhibited stronger cytotoxicity than Th2 cells, both cell types completely eradicated tumors when transferred into mice bearing A20 tumor cells transfected with the OVA gene (A20-OVA). Th1 cells eradicated the tumor mass by inducing cellular immunity, whereas Th2 cells destroyed the tumor by inducing tumor necrosis. Both Th1 and Th2 cells required CD8(+) T cells to eliminate tumors, and neither of these cells were able to completely eliminate A20-OVA tumors from T and B cell-deficient RAG2(-/-) mice. Mice cured from tumors by Th1 and Th2 cell therapy rejected A20-OVA upon rechallenge, but CD8(+) cytotoxic T lymphocytes were induced only from spleen cells prepared from cured mice by Th1 cell therapy. Moreover, we demonstrated that Th1 and Th2 cells used distinct adhesion mechanisms during tumor eradication: the leukocyte function-associated antigen (LFA)-1-dependent cell-cell adhesion step was essential for Th1 cell therapy, but not for Th2 cell therapy. These findings demonstrated for the first time the distinct role of antigen-specific Th1 and Th2 cells during eradication of established tumors in vivo.
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MESH Headings
- Animals
- Antigens/genetics
- Cell Adhesion/immunology
- Cytokines/immunology
- Cytotoxicity, Immunologic
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/immunology
- Female
- Immunologic Memory
- Immunotherapy, Adoptive
- Mice
- Mice, Inbred BALB C
- Mice, Knockout
- Mice, Transgenic
- Models, Biological
- Neoplasms, Experimental/immunology
- Neoplasms, Experimental/pathology
- Neoplasms, Experimental/therapy
- Ovalbumin/genetics
- Ovalbumin/immunology
- Receptors, Antigen, T-Cell/genetics
- Th1 Cells/immunology
- Th2 Cells/immunology
- Transfection
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Affiliation(s)
- T Nishimura
- Section of Genetic Engineering, Research Center for Genetic Engineering and Cell Transplantation, Tokai University School of Medicine, Isehara, Japan
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47
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Yahata T, Furuyama F, Nagashima T, Moriya M, Kikuchi-Utsumi K, Kawada T, Kuroshima A. Thermoregulatory responses of the inbred heat-tolerant FOK rat to cold. Am J Physiol 1999; 277:R362-7. [PMID: 10444541 DOI: 10.1152/ajpregu.1999.277.2.r362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The responses of inbred heat-tolerant FOK rats to cold were compared with those of Wistar King A/H (WKAH) and Std:Wistar (WSTR) strains. The fall of colonic temperature during cold exposure was unexpectedly smaller in FOK than in other groups, but the onset of shivering was delayed in FOK. Norepinephrine (NE)-induced in vivo oxygen consumption and the mitochondrial uncoupling protein 1 level of brown adipose tissue (BAT) were not different among the groups, but the cold-induced increases in in vivo oxygen consumption as well as plasma glycerol and free fatty acids were higher in FOK than in other groups. In vitro NE-induced oxygen consumption of BAT was less in FOK than WSTR, but not WKAH. The magnitude of the NE-induced increase in blood flow through BAT was higher in FOK than in other groups. These results suggest that FOK paradoxically have a high capacity for nonshivering thermogenesis in spite of their high capacity for heat tolerance, probably due to an increased lipid utilization and improved circulation of BAT.
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Affiliation(s)
- T Yahata
- Department of Physiology, Asahikawa Medical College, Asahikawa 078-8510, Japan.
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48
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Kurabayashi T, Tomita M, Matsushita H, Yahata T, Honda A, Takakuwa K, Tanaka K. Association of vitamin D and estrogen receptor gene polymorphism with the effect of hormone replacement therapy on bone mineral density in Japanese women. Am J Obstet Gynecol 1999; 180:1115-20. [PMID: 10329864 DOI: 10.1016/s0002-9378(99)70603-4] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE We studied whether vitamin D receptor and estrogen receptor gene polymorphism is associated with the effect of hormone replacement therapy on lumbar-spinal bone mineral density in Japanese women. STUDY DESIGN The subjects were 82 Japanese women aged 40 to 64 years (49.7 +/- 0.6 years, mean +/- SEM) who had taken hormone replacement therapy for >1 year. Genomic deoxyribonucleic acid was extracted from blood and analyzed for restriction fragment length polymorphism with the restriction endonucleases Taq I, Apa I, and Fok I for vitamin D receptor and Pvu II and Xba I for estrogen receptor. RESULTS The subjects with genotype TT had a significantly higher percentage change in bone mineral density per year than those with the Tt genotype (2.8% +/- 0.6% vs -0.8% +/- 1.4%, P =.019). The serum level of pyridinoline cross-linked carboxy-terminal telopeptide of type I collagen decreased by 13% during 1 year of hormone replacement therapy in subjects with the TT genotype (P =. 001) but did not change in women with the Tt genotype. In multiple regression analysis including age, height (centimeters), weight (kilograms), and polymorphisms of the vitamin D receptor and estrogen receptor genes, only age and Taq I polymorphism of the vitamin D receptor gene were associated independently with change in bone mineral density (P =.001 and.004, respectively). CONCLUSION Taq I polymorphism of the vitamin D receptor gene is associated with the effect of hormone replacement therapy on lumbar-spinal bone mineral density and bone resorption markers in Japanese women. Analysis of the vitamin D receptor alleles may prove useful for selection of the optimum therapy for osteoporosis management.
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Affiliation(s)
- T Kurabayashi
- Department of Obstetrics and Gynecology, Niigata University School of Medicine, Japan
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49
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Matsuyama T, Urano K, Ohkido M, Ozawa H, Ohta A, Kaneko S, Yahata T, Takita C, Nishimura T. The quantitative and qualitative defect of CD4+ CD45RO+ memory-type T cells are involved in the abnormality of TH1 immunity in atopic dermatitis patients. Clin Exp Allergy 1999; 29:687-94. [PMID: 10231330 DOI: 10.1046/j.1365-2222.1999.00568.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Peripheral blood mononuclear cells (PBMCs) obtained from atopic dermatitis (AD) patients produced low levels of IFN-gamma in response to Dermatophagoides farinae antigen (Der f Ag) plus IL-2 or OKT3 MoAb in contrast with PBMCs obtained from healthy donors. The reduced IFN-gamma production in AD patients' T cells appeared to be derived from the defect of CD4+ T cells but not CD8+ T cells. Indeed, from the cytoplasmic staining analysis of cytokines, it was demonstrated that the frequency of IFN-gamma producing CD4+ T cells (TH1 cells) in AD patients was markedly lower than that of healthy donors. From the phenotypic analysis using flow cytometry, it was also found that the number of CD4+ CD45RO+ memory type T cells was significantly reduced in AD patients compared with that of healthy donors. In addition to quantitative defect of memory type CD4+ T cells, functional defect of CD4+ CD45RO+ memory type T cells was also demonstrated in AD patients. Enriched CD4+ CD45RO+ T cells obtained from AD patients, who exhibited greatly reduced delayed-type hypersensitivity (DTH) response in tuberculin test, showed no significant TH1 immunity in terms of IFN-gamma production by stimulation with OKT3 MoAb or purified protein derivative (PPD). Thus, the immunological abnormality of TH1 immunity in AD patients appeared to be induced in concomitant with both the quantitative and qualitative defect of memory type CD4+ T cells.
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Affiliation(s)
- T Matsuyama
- Department of Dermatology,Section of Genetic Engineering, Research Center for Genetic Engineering and Cell Transplantation, Bohseidai, Isehara, Japan
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50
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Kitamura H, Iwakabe K, Yahata T, Nishimura S, Ohta A, Ohmi Y, Sato M, Takeda K, Okumura K, Van Kaer L, Kawano T, Taniguchi M, Nishimura T. The natural killer T (NKT) cell ligand alpha-galactosylceramide demonstrates its immunopotentiating effect by inducing interleukin (IL)-12 production by dendritic cells and IL-12 receptor expression on NKT cells. J Exp Med 1999; 189:1121-8. [PMID: 10190903 PMCID: PMC2193012 DOI: 10.1084/jem.189.7.1121] [Citation(s) in RCA: 485] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The natural killer T (NKT) cell ligand alpha-galactosylceramide (alpha-GalCer) exhibits profound antitumor activities in vivo that resemble interleukin (IL)-12-mediated antitumor activities. Because of these similarities between the activities of alpha-GalCer and IL-12, we investigated the involvement of IL-12 in the activation of NKT cells by alpha-GalCer. We first established, using purified subsets of various lymphocyte populations, that alpha-GalCer selectively activates NKT cells for production of interferon (IFN)-gamma. Production of IFN-gamma by NKT cells in response to alpha-GalCer required IL-12 produced by dendritic cells (DCs) and direct contact between NKT cells and DCs through CD40/CD40 ligand interactions. Moreover, alpha-GalCer strongly induced the expression of IL-12 receptor on NKT cells from wild-type but not CD1(-/-) or Valpha14(-/-) mice. This effect of alpha-GalCer required the production of IFN-gamma by NKT cells and production of IL-12 by DCs. Finally, we showed that treatment of mice with suboptimal doses of alpha-GalCer together with suboptimal doses of IL-12 resulted in strongly enhanced natural killing activity and IFN-gamma production. Collectively, these findings indicate an important role for DC-produced IL-12 in the activation of NKT cells by alpha-GalCer and suggest that NKT cells may be able to condition DCs for subsequent immune responses. Our results also suggest a novel approach for immunotherapy of cancer.
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MESH Headings
- Adjuvants, Immunologic/pharmacology
- Animals
- Cytotoxicity, Immunologic/drug effects
- Dendritic Cells/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Drug Synergism
- Galactosylceramides/pharmacology
- Gene Expression Regulation/drug effects
- Immunity, Cellular/drug effects
- Interferon-gamma/biosynthesis
- Interferon-gamma/genetics
- Interleukin-12/biosynthesis
- Interleukin-12/genetics
- Interleukin-12/pharmacology
- Killer Cells, Natural/drug effects
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Ligands
- Lymphocyte Activation/drug effects
- Lymphocyte Subsets/drug effects
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Receptors, Interleukin/biosynthesis
- Receptors, Interleukin/genetics
- Receptors, Interleukin-12
- Up-Regulation/drug effects
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Affiliation(s)
- H Kitamura
- Section of Genetic Engineering, Research Center for Genetic Engineering and Cell Transplantation, Tokai University School of Medicine, Isehara 259-1193, Japan
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