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Hirota M, Saze T, Ogata Y, Nishizawa K. Feasibility of in vivo thyroid 131I monitoring with an imaging plate. Appl Radiat Isot 2001; 55:513-6. [PMID: 11545504 DOI: 10.1016/s0969-8043(01)00096-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A new in vivo thyroid 131I monitoring method was devised by using an imaging plate (IP). A thyroid image obtained with a realistic neck-thyroid phantom showed a unique shape characteristic of the thyroid gland. A 131I thyroid imaging allows visual confirmation of thyroid accumulation of 131I. The detection limit of the IP system of 290 Bq was about 1/100 of the screening level of 30 kBq in cases of public emergencies. The IP system is applicable for thyroid 131I monitoring.
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102
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Shibuya-Fujiwara N, Hirayama F, Ogata Y, Matsuda A, Sekiguchi S, Ikeda H, Ikebuchi K. Liposome-encapsulated superoxide dismutase suppresses liposome-mediated augmentation of TNF-alpha production from peripheral blood leucocytes. Life Sci 2001; 69:2007-15. [PMID: 11589516 DOI: 10.1016/s0024-3205(01)01285-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Liposome-encapsulated hemoglobin (LEH), a candidate for a red cell substitute, has been reported to be cleared from circulation primarily by the phagocytic system and modulate the production of inflammatory cytokines, such as TNF-alpha and IL-6, both in vivo and in vitro. In this study, we investigated the effects of liposome vesicles on the LPS-induced TNF-alpha production using a whole blood culture system. We also studied the effects of superoxide dismutase (SOD) encapsulated in liposome on the cytokine production. The pre-treatment of whole blood with liposome vesicles potentiated the LPS-induced TNF-alpha production. The encapsulation of SOD in the liposome vesicles suppressed the liposome-mediated augmentation of TNF-alpha production in a dose-dependent manner. These results suggest that encapsulation of SOD in LEH decreases the production of inflammatory cytokines from the phagocytic system which may be caused or augmented by LEH infusion in vivo.
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103
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Araki Y, Ishibashi N, Ogata Y, Shirouzu K, Isomoto H. The usefulness of restorative laparoscopic-assisted total colectomy for ulcerative colitis. Kurume Med J 2001; 48:99-103. [PMID: 11501505 DOI: 10.2739/kurumemedj.48.99] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to evaluate the effectiveness of laparoscopic-assisted total colectomy with ileal J-pouch anal anastomosis in comparison with that of conventional open total colectomy in patients with ulcerative colitis. From 1990 until 1999, 11 patients underwent open total colectomy, while 21 patients had laparoscopic-assisted total colectomy. Patients characteristics, perioperative course, and recovery were compared. Differences between the groups were tested using Student's t-test for independent groups and chi-square tests when appropriate. Nasogastric tube could be removed after POD 1.1 vs. 4.8 (p < 0.05), the mean time to passage of stool was 1.7 (range, 1 to 3) vs. 5.4 (range, 3 to 7) days (p < 0.05), and in the laparoscopic group watery stool was soon made solid after POD 24.3 vs. 87.3 (p < 0.01). There were no significant differences in the mean operating time and mean estimated operating blood loss between two groups. Postoperative morbidity did not differ significantly between the patients treated conventionally (45.5%) and laparoscopically (33.3%). The findings of this study indicate that laparoscopic-assisted total colectomy improved cosmetic results and to be a safe and effective treatment for the elective surgery of ulcerative colitis.
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104
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Nakao S, Ogata Y, Modéer T, Segawa M, Furuyama S, Sugiya H. Bradykinin induces a rapid cyclooxygenase-2 mRNA expression via Ca2+mobilization in human gingival fibroblasts primed with interleukin-1 β. Cell Calcium 2001; 29:446-52. [PMID: 11352510 DOI: 10.1054/ceca.2001.0206] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We have previously demonstrated that bradykinin potentiates prostaglandin E(2)release in human gingival fibroblasts pretreated with interleukin-1 beta (priming). In this study, we demonstrate a potentiating effect of bradykinin on cyclooxygenase-2 mRNA expression in the interleukin-1 beta-primed fibroblasts. Interleukin-1 beta (200 pg/ml) induced cyclooxygenase-2 mRNA expression, but not bradykinin (1 microM). However, bradykinin rapidly and markedly increased the cyclooxygenase-2 mRNA expression in the fibroblasts primed with interleukin-1 beta. In the primed fibroblasts, ionomycin and thapsigargin mimicked the potentiating effect of bradykinin on the cyclooxygenase-2 mRNA expression. Dexamethasone and actinomycin D completely suppressed not only the interleukin-1 beta-induced cyclooxygenase-2 mRNA expression, but also the bradykinin-induced cyclooxygenase-2 mRNA expression in the interleukin-1 beta-primed fibroblasts, although cycloheximide did not inhibit the effects of interleukin-1 beta and bradykinin. These results suggest that bradykinin-induced prostaglandin E2 synthesis is regulated at the level of the transcription of cyclooxygenase-2 mRNA via Ca2+ mobilization in the interleukin-1 beta-primed human gingival fibroblasts.
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105
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Komine M, Kukita A, Kukita T, Ogata Y, Hotokebuchi T, Kohashi O. Tumor necrosis factor-alpha cooperates with receptor activator of nuclear factor kappaB ligand in generation of osteoclasts in stromal cell-depleted rat bone marrow cell culture. Bone 2001; 28:474-83. [PMID: 11344046 DOI: 10.1016/s8756-3282(01)00420-3] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A member of the tumor necrosis factor (TNF) family, receptor activator of nuclear factor kappaB ligand (RANKL; also known as ODF, OPGL, and TRANCE), plays critical roles in osteoclast differentiation and activation in the presence of macrophage colony-stimulating factor (M-CSF). Recently, TNF-alpha has also been shown to induce the formation of multinucleated osteoclast-like cells (MNCs) in the presence of M-CSF from mouse macrophages. We demonstrated that mononuclear preosteoclast-like cells (POCs) were formed in the presence of conditioned medium of osteoblastic cells in a rat bone marrow culture depleted of stromal cells. Using this culture system, in this study we examined whether TNF-alpha affects differentiation into POCs from hematopoietic progenitor cells. Human TNF-alpha (hTNF-alpha) markedly stimulated the formation of POCs. Moreover, a concentration as low as 0.005 ng/mL of hTNF-alpha increased the level of mRNA for calcitonin receptor (CTR) and cathepsin-K of POCs. The POCs induced by hTNF-alpha formed MNCs, which showed dentine-resorbing activity after coculture with primary osteoblasts. Stimulation was observed after 24 h of treatment with hTNF-alpha only on day 1 or day 2 of the culture. After 24 h of hTNF-alpha treatment, expression of the receptor activator of nuclear factor kappaB (RANK) mRNA was markedly increased. The addition of soluble RANKL (sRANKL) to the preformed POCs efficiently induced MNCs. Interestingly, treatment of bone marrow cells with hTNF-alpha and sRANKL synergistically augmented the formation of MNCs. This formation was abolished by the addition of human osteoprotegerin (hOPG). These results suggest that cooperation of TNF-alpha and RANKL is important for osteoclastogenesis.
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MESH Headings
- Animals
- Bone Marrow Cells/cytology
- Bone Marrow Cells/drug effects
- Bone Marrow Cells/metabolism
- Bone Remodeling/drug effects
- Bone Remodeling/physiology
- Bone and Bones/cytology
- Bone and Bones/drug effects
- Bone and Bones/metabolism
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Carrier Proteins/pharmacology
- Cathepsins/genetics
- Cell Differentiation/drug effects
- Cell Differentiation/physiology
- Cells, Cultured/cytology
- Cells, Cultured/drug effects
- Cells, Cultured/metabolism
- Coculture Techniques
- Culture Media, Conditioned/pharmacology
- Drug Interactions/physiology
- Glycoproteins/metabolism
- Glycoproteins/pharmacology
- Hematopoietic Stem Cells/cytology
- Hematopoietic Stem Cells/drug effects
- Hematopoietic Stem Cells/metabolism
- Male
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Membrane Glycoproteins/pharmacology
- Osteoblasts/cytology
- Osteoblasts/drug effects
- Osteoblasts/metabolism
- Osteoclasts/cytology
- Osteoclasts/drug effects
- Osteoclasts/metabolism
- Osteoprotegerin
- RANK Ligand
- RNA, Messenger/drug effects
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptor Activator of Nuclear Factor-kappa B
- Receptors, Calcitonin/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Receptors, Tumor Necrosis Factor
- Stromal Cells/cytology
- Stromal Cells/metabolism
- Tumor Necrosis Factor-alpha/metabolism
- Tumor Necrosis Factor-alpha/pharmacology
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Kikuyama S, Inada T, Shimizu K, Miyakita M, Ogata Y. p53, bcl-2 and thymidine phosphorylase as predictive markers of chemotherapy in patients with advanced and recurrent gastric cancer. Anticancer Res 2001; 21:2149-53. [PMID: 11501839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
PURPOSE To study the relationship between expression of p53, bcl-2, thymidine phosphorylase and Ki-67 and the response to chemotherapy and survival in patients with recurrent and advanced gastric cancer. MATERIALS AND METHODS Protein expression was assessed immunohistochemically in 28 patients treated with 5-fluorouracil, pirarubicin and cisplatin (FAP). RESULTS The response rate in patients positive for p53 expression was 23% compared with 47% of p53-negative patients. The response rate was also reduced from 44% in patients negative for bcl-2 protein expression to 25% in bcl-2 positive patients. Thymidine phosphorylase (dThdPase) expression was observed in 20 patients (71%), 50% of whom responded to chemotherapy, while patients negative for dThdPase expression did not respond to chemotherapy. The correlation between response rate and dThdPase-positivity was statistically significant (p < 0.05). However, with regard to patient survival, p53- and bcl-2-negative patients showed significantly better survival than patients positive for p53 and/or bcl-2 (p = 0.036). CONCLUSION While dThdPase expression may be a useful predictor of response to chemotherapies that include 5-FU, p53 and bcl-2 expression may predict the outcome of patients with recurrent and advanced gastric cancer following chemotherapy.
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107
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Ogata Y, Akagi Y, Nozoe Y, Sasatomi T, Miyagi Y, Nakagawa M, Matono K, Kobayashi H, Shirouzu K. [Relationship between the anti-metastatic effect of UFT and in vitro chemosensitivity to 5-FU in metastatic tumors from orthotopic implanted colon cancer in nude rats]. Gan To Kagaku Ryoho 2001; 28:655-60. [PMID: 11383214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
We have investigated the correlation between the in vitro chemosensitivity to 5-FU, measured using the collagen gel droplet embedded culture drug sensitivity test (CD-DST), and the anti-tumor effect of UFT, a prodrug of 5-FU, in metastatic tumors from orthotopic implanted colon cancer in nude rats. Human colon cancer cells (KM12SM) were injected into the cecal wall of the nude rats. Five weeks later, the implanted cecal tumors were removed. Oral UFT (a daily dose of 30 mg/kg) was administered postoperatively for four weeks. After the UFT administration period, the lung and lymph nodes were analyzed macroscopically and microscopically. In vitro chemosensitivity to 5-FU in the lung and lymph node metastases was tested using CD-DST, and the enzymatic activities of thymidine synthetase (TS) and dihydropyrimidine dehydrogenase (DPD) in the lung and lymph node metastases were measured. A daily administration of UFT produced an inhibitory effect on lung metastasis compared with the control group. However, there was no difference in the frequency of lymph node metastasis. The inhibition rate produced by 5-FU in CD-DST was significantly higher for lung metastases than for lymph node metastases. There was no difference in the TS and DPD activities between the metastatic tumoral tissues. These results suggest that the organ specificity of the anti-tumor effects of UFT on colon metastases may be determined by CD-DST of 5-FU for individual tumors. The TS and DPD activity in the tumoral tissues may not affect the organ specificity of the anti-tumor effect of UFT on colon metastases.
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108
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Kanazawa M, Ogata Y, Aoyagi K, Stearns ME, Shirouzu K. Significance of cysteine rich transcription factor (CRTF) in the synthesis of tissue inhibitor of metalloproteinases 1 (TIMP-1) in gastrointestinal cancers. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2001; 20:145-51. [PMID: 11370821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
We previously reported that a novel promoter enhancer element "human tissue inhibitors of metalloproteinases 1 (TIMP-1) enhancer" (HTE) and a novel transacting protein "cysteine rich transcription factor" (CRTF) induced TIMP-1 synthesis in prostate cancer cells 2xN.I.PC-3. In the present study, to clarify the significance of CRTF in gastrointestinal cancers we measured the binding activity of CRTF to HTE using an electrophoretic mobility shift assay (EMSA), and the TIMP-1 concentration by ELISA after various stimulation of six cancer cell lines (KE-3, TE-9, MKN-28, MKN-45, KM12SM, SW620). In three cell lines (KE-3, MKN-45, SW620), both the binding activity of CRTF and TIMP-1 concentration significantly increased after IL-10 stimulation. Fetal bovine serum (FBS) did not affect the binding activity of CRTF, whereas FBS induced TIMP-1 synthesis in all cell lines. In KE-3 esophageal cancer cells and SW620 colon cancer cells, both the binding activity of CRTF and TIMP-1 concentration increased in the presence of a conditioned medium (CM) of fibroblasts which was isolated from human colon cancer tissues, but did not increase in MKN-45 cells. Moreover, in the fibroblasts, both the binding activity of CRTF and the TIMP-1 concentration increased in the presence of CM from KM12SM, SW620, and TE-9 cancer cell lines. These results suggested that IL-I0, and unknown factors in addition to IL-10, induced TIMP-1 synthesis via an increase in the binding activity of CRTF in gastrointestinal cancers, and that interaction between cancer cells and fibroblasts may play an important role in TIMP-1 synthesis through a signal transduction pathway consisting of CRTF phosphorylation and HTE activation.
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109
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Kitago M, Inada T, Igarashi S, Mizutani S, Ogata Y, Kubota T. Multiple gastric carcinoid tumors with type A gastritis concomitant with gastric cancer: a case report. Oncol Rep 2001; 8:343-6. [PMID: 11182053 DOI: 10.3892/or.8.2.343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
We describe a case with multiple gastric carcinoid tumors combined with early gastric carcinoma originated from the type A gastritis-affected tissue. Microcarcinoid foci were observed from the deeper layers of the propria mucosa to the submucosa and were surrounded by endocrine cell micronests (ECMs), while carcinoma was limited within the mucosa. Serum gastrin level was high (1,100 pg/ml) pre-operatively but returned to normal (44 pg/ml) post-operatively. It suggested that the longstanding hypergastrinemia may have played a causative role in the development of multiple carcinoids and cancer. Surgical treatment was considered essential for treatment in this case of coincident multiple carcinoid tumors and cancer.
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110
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Shimizu-Sasaki E, Yamazaki M, Furuyama S, Sugiya H, Sodek J, Ogata Y. Identification of a novel response element in the rat bone sialoprotein (BSP) gene promoter that mediates constitutive and fibroblast growth factor 2-induced expression of BSP. J Biol Chem 2001; 276:5459-66. [PMID: 11087753 DOI: 10.1074/jbc.m008971200] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Bone sialoprotein (BSP) is a sulfated and phosphorylated glycoprotein, found almost exclusively in mineralized connective tissues, that may function in the nucleation of hydroxyapatite crystals. We have found that expression of BSP in osteoblastic ROS 17/2.8 cells is stimulated by fibroblast growth factor 2 (FGF2), a potent mitogen for mesenchymal cells. Stimulation of BSP mRNA with 10 ng/ml FGF2 was first evident at 3 h ( approximately 2.6-fold) and reached maximal levels at 6 h ( approximately 4-fold). From transient transfection assays, a FGF response element (FRE) was identified (nucleotides -92 to -85, "GGTGAGAA") as a target of transcriptional activation by FGF2. Ligation of two copies of the FRE 5' to an SV40 promoter was sufficient to confer FGF-responsive transcription. A sequence-specific protein-DNA complex, formed with a double-stranded oligonucleotide encompassing the FRE and nuclear extracts from ROS 17/2.8 cells, but not from fibroblasts, was increased following FGF2 stimulation. Several point mutations within the critical FRE sequence abrogated the formation of this complex and suppressed both basal and FGF2-mediated promoter activity. These studies, therefore, have identified a novel FRE in the proximal promoter of the BSP gene that mediates both constitutive and FGF2-induced BSP transcription.
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111
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Hara Y, Ogata Y, Shirouzu K. Early tumor growth in metastatic organs influenced by the microenvironment is an important factor which provides organ specificity of colon cancer metastasis. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2000; 19:497-504. [PMID: 11277329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We have previously demonstrated that liver metastases in nude mice and lung metastases in nude rats occurred specifically, when KM12SM human colon carcinoma cells were inoculated orthotopically into the cecal wall of nude mice and rats. To clarify the relationship between the tumor growth potential in the metastatic organs and the metastatic organ preference in these two metastatic models, we have evaluated the in vitro cell growth activities affected by the organ conditioned medium (CM) from the liver and lung, and the in vivo growth activities of the ectopic implanted tumors in the liver and lung. The tumorigenicity of the ectopic implanted tumors was 100% in mouse liver, 33% in rat liver, 50% in mouse lung, and 75% in rat lung. The crude liver CM of the animals showed inhibitory activities for KM12SM cell growth in a dosage-dependent manner, and the crude lung CM stimulated KM12SM cell growth. The liver CM of nude mice inhibited the KM12SM cell growth more strongly compared with the CM of nude rats, and the lung CM of nude rats was more strongly stimulated compared with the CM of nude mice. The liver CM of nude mice had non-heparin binding factors, which stimulated or inhibited KM12SM cell growth, in a molecular weight range of 50 to 100 kDa. By contrast, the liver CM of nude rats showed no growth stimulating activity for KM12SM cells. These results suggest that the metastatic organ specificity of KM12SM cells may depend on the early tumor growth influenced by the microenvironment in metastatic organs.
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112
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Sasatomi T, Yamana H, Shichijo S, Tanaka S, Okamura T, Ogata Y, Itoh K, Shirouzu K. Expression of the SART1 tumor-rejection antigens in colorectal cancers. Dis Colon Rectum 2000; 43:1754-8. [PMID: 11156463 DOI: 10.1007/bf02236863] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE Colorectal cancer is one of the major causes of cancer death in the world, including in the United States and Japan. We recently identified the tumor-rejection antigen gene SART1, which encodes both the SART1(259) antigen expressed in the cytosol of epithelial cancers and the SART1(800) antigen expressed in the nucleus of the majority of proliferating cells. This study investigated the expression of these tumor antigens to explore a potential molecule for specific immunotherapy of colorectal cancer patients. METHODS SART1 antigens were investigated by Western blotting in six colorectal cancer cell lines and in 33 colorectal cancer tissues. The cancer cell lines were tested for their ability to stimulate interferon-gamma production by the human-leukocyte-antigen-A24-restricted and SART1-specific cytotoxic T lymphocytes and were also tested for their susceptibility to the lysis by the cytotoxic T lymphocytes. RESULTS The SART1(259) antigen was detected in the cytosol of four of six cancer cell lines, 13 of 33 (39 percent) cancer tissues, and 0 of 20 nontumorous colorectal tissues. The SART1(800) antigen was expressed in the nucleus of all the colorectal cancer cell lines, 18 of 33 (55 percent) cancer tissues, and 0 of 20 nontumorous tissues. The human-lymphocyte-antigen-A24-restricted and SART1-specific cytotoxic T lymphocytes killed the human-lymphocyte-antigen-A24+ SART1(259+) cancer cells. CONCLUSIONS The SART1(259) antigen could be an appropriate target molecule for specific immunotherapy of approximately 40 percent of the human-lymphocyte-antigen-A24+ patients with colorectal cancer.
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113
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Ogata Y, Yokote E, Hashimoto M, Fukuda T, Nakano Y, Mori K, Otosaka K, Gunji A. [A study on resource based relative values for visiting nursing services]. [NIHON KOSHU EISEI ZASSHI] JAPANESE JOURNAL OF PUBLIC HEALTH 2000; 47:973-89. [PMID: 11201147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
PURPOSE The purpose of this study was to investigate the resource based relative values of visiting nursing services, and to analyze the relationships between the relative values and the dimensions of nursing service(time, mental effort and physical effort). METHODS We interviewed nurses at 20 Home-visit nursing care stations (HVNCS) in the Metropolitan area using the resource based relative value questionnaires. We asked nurses about relative values of "Total Work", and also measured relative weight of 3 dimensions of nursing services. Total Work was defined as comprehensive evaluation of nursing services, with careful consideration of intensity as well as duration. With the dependent variable as Total Work and independent variables as the 3 dimensions, multiple regression analyses were carried out. Furthermore we examined the degree of influence on Total Work by service type and individual respondent. To examine the validity of the results, we timed nursing services and compared the measured time with the answered time. RESULTS The 107 respondents were all female and their average age was 36.6 years old. They had HVNCS experience of 2.2 years and 95.3% nurses had experience of hospital nursing. "Total Work" and 3 dimension scores were standardized using common logarithms. "Total Work" of every service significantly differed among service types. The 3 dimensions explained 54.6% of Total Work in the multiple regression analysis. Service type explained 3.3% of Total Work. Individual respondent explained 16.0% of Total Work. Answered time and measured time were not significantly different with nursing services. CONCLUSIONS Although Total Work was somewhat influenced by individual respondent, most of variation was explained by 3 dimensions. Thus, it could be concluded that Total Work is an index of nursing resource input. A further investigation about influence of patients' condition on Total Work is necessary in the future.
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114
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Ogata Y, Imai E, Honda H, Hatori K, Matsuno K. Hydrothermal circulation of seawater through hot vents and contribution of interface chemistry to prebiotic synthesis. ORIGINS LIFE EVOL B 2000; 30:527-37. [PMID: 11196573 DOI: 10.1023/a:1026543825011] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Synthesizing oligopeptides from glycine and alanine in a flow reactor, which stimulates constant hydrothermal circulation of seawater through hot vents on the primitive Earth, demonstrated that an exponential growth of the products is possible. The initial rapid growth of the product is a consequence of using the products formed in one cycle as the starting materials for the cycle of synthesis.
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115
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Ogata Y, Kobayashi K, Matsuo T, Suga H. An adiabatic low-temperature calorimeter for small samples. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3735/17/11/030] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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116
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Takeda A, Fukuzaki A, Kaneto H, Ishidoya S, Ogata Y, Sasaki T, Konda R, Sakai K, Orikasa S. Role of leukocyte adhesion molecules in monocyte/ macrophage infiltration in weanling rats with unilateral ureteral obstruction. Int J Urol 2000; 7:415-20. [PMID: 11144652 DOI: 10.1046/j.1442-2042.2000.00222.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Unilateral ureteral obstruction (UUO) of rats is a well-established model for studying obstructive nephropathy. Meanwhile, pathophysiology of pediatric obstructive nephropathy is not well understood. In this report, we studied monocyte/macrophage infiltration and expression of intercellular adhesion molecule 1 (ICAM-1) and macrophage antigen 1 (Mac-1) in weanling rats with UUO. METHODS Three-week-old male Sprague-Dawley rats underwent left unilateral ureteral ligation. Both obstructed kidneys (OBK) and contralateral kidneys (CLK) were harvested at 3, 6, 12, 24, 72 and 120 h after surgery. Monocyte/macrophage infiltration and expression of ICAM-1 and Mac-1 were evaluated immunohistochemically, and results were compared with those of sham-operated control rats (SOK). RESULTS Monocyte/macrophage infiltration was observed in the interstitium and perivascular region in the cortex of OBK within 6 h. The CLK and SOK showed slight monocyte/macrophage infiltration. Expression of ICAM-1 was markedly observed in the periarterial and peritubular interstitium and in renal cortical peritubular capillaries 12 h after obstruction. In CLK and SOK, ICAM-1 was slightly expressed in the endothelium of microvessels and parietal linings of Bowman's capsule. Expression of Mac-1 was detected mainly in cells infiltrating the perivascular interstitium in OBK. In CLK and SOK, few Mac-1-positive cells were observed. CONCLUSIONS Adhesion molecules, ICAM-1 and Mac-1, are expected to recruit monocyte/macrophage infiltration into OBK of weanling rats with UUO.
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Horikoshi M, Teshima T, Yanagimachi T, Ogata Y, Nukiwa T. [Regional assessment of treatment in lung cancer using lung perfusion and ventilation images]. KAKU IGAKU. THE JAPANESE JOURNAL OF NUCLEAR MEDICINE 2000; 37:653-60. [PMID: 11193451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
In 30 patients with lung cancer undergoing non-surgical treatment, we performed perfusion lung imaging using 99mTc-MAA and inhalation lung studies using Technegas before and after treatment and evaluated regional perfusion and ventilation status in the lung regions where bronchogenic carcinoma was located. Regional ventilation status was preserved rather than perfusion counterpart (V > P) in 18 patients (18/30 = 60.0%) before treatment, while the former was better than the latter in 27 patients (27/30 = 90.0%) after treatment, indicating that regional ventilation status improved more significantly than regional perfusion counterpart after treatment (p = 0.005). We also classified the therapeutic effect for regional perfusion and ventilation status as improved, unchanged, or worsened, respectively; improvement in regional perfusion status was observed in 17 patients (56.7%) and that in regional ventilation status in 24 patients (80.0%). There was a statistically significant correlation between improved regional perfusion and ventilation status (p = 0.0018) when therapeutic effect was recognized. The patients who showed improvement in regional perfusion status after treatment always showed improved regional ventilation status, but 7 patients showed either unchanged or worsened regional perfusion status after treatment, although regional ventilation status was improved. In conclusion the pulmonary vascular beds seem more vulnerable to bronchogenic carcinoma and improvement in regional perfusion status was revealed to be more difficult than that in regional ventilation status after treatment.
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118
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Ogata Y, Kaneko T, Kayama N, Ueno S. [Effects of nilvadipine on retinal microcirculation and systemic circulation]. NIPPON GANKA GAKKAI ZASSHI 2000; 104:699-705. [PMID: 11081304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
PURPOSE The effects of nilvadipine on retinal blood flow and systemic circulation were studied by the hydrogen clearance method. MATERIALS AND METHODS The subjects were 10 male beagles. Under general anesthesia, nilvadipine (32 micrograms/ml/kg), dissolved in polyethylene glycols was injected into the stomach of 5 beagles, and only polyethylene glycols was injected into the stomach of the other 5 beagles as controls. Retinal tissue blood flow, heart rate, arterial blood pressure, pulmonary arterial pressure, central vein pressure, cardiac output, and systemic vessel resistance were measured over time and compared between the two groups. RESULTS Retinal tissue blood flow showed significant increase only in the Nilvadipine group (max 29.2%). No marked changes were observed in the systemic circulation in either group. The time to maximum blood concentration of Nilvadipine was 120 min, and the maximum blood concentration was 1.27 ng/ml. CONCLUSION Nilvadipine may directly and selectively increase retinal tissue blood flow, while having only minimal effect on systemic circulation including arterial blood pressure.
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Inuzuka K, Ogata Y, Nagase H, Shirouzu K. Significance of coexpression of urokinase-type plasminogen activator, and matrix metalloproteinase 3 (stromelysin) and 9 (gelatinase B) in colorectal carcinoma. J Surg Res 2000; 93:211-8. [PMID: 11027463 DOI: 10.1006/jsre.2000.5952] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Our previous study showed that proMMP-9 was activated by MMP-3 directly, and that proMMP-3 was activated by plasmin. It was postulated that the proMMP-9 activation mechanism through the protease-protease cascade existed even in vivo. The purpose of the present study was to clarify the clinical significance of the combined expression of MMP-9, MMP-3, and urokinase-type plasminogen activator (uPA) in colorectal cancer, and the role of MMP-3 or uPA expression as an activator for MMP-9. The expression of both MMP-9 and uPA was found to be correlated with liver metastasis, and with survival rate. The coexpression of MMP-9 and uPA by tumor cells was also significantly correlated with postoperative hepatic recurrence and survival rate. MMP-9 tended to be coexpressed with uPA, and was consistently associated with MMP-3 localized at the tumor-invasive front with inflammatory cells such as monocyte-macrophages. In gelatin zymography, the MMP-9 active form tended to be identified in the tumors that coexpressed both MMP-9 and uPA. We concluded that coexpression of MMP-9 and uPA in tumor tissues might be a useful predictive factor for postoperative survival and hepatic metastasis. The following activation mechanism for proteinase might occur: uPA coexpressed with MMP-9 activated plasminogen, and plasmin activated proMMP-3, which was secreted depending upon inflammatory infiltration, and then MMP-3 activated proMMP-9, resulting in colorectal cancer progression and metastasis.
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Ogata Y, Nakao S, Kim RH, Li JJ, Furuyama S, Sugiya H, Sodek J. Parathyroid hormone regulation of bone sialoprotein (BSP) gene transcription is mediated through a pituitary-specific transcription factor-1 (Pit-1) motif in the rat BSP gene promoter. Matrix Biol 2000; 19:395-407. [PMID: 10980416 DOI: 10.1016/s0945-053x(00)00085-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bone sialoprotein (BSP) is a mineralized tissue-specific protein expressed by differentiated osteoblasts that appears to function in the initial mineralization of bone. Parathyroid hormone (PTH), which regulates serum calcium through its actions on bone cells, increases the expression of BSP in the rat osteosarcoma cell line (ROS 17/2.8). At 10(-8) M PTH (human 1-34 PTH), stimulation of BSP mRNA was first evident at 3 h ( approximately 3.8-fold), reached maximal levels at 6 h ( approximately 4.7-fold), and declined slowly thereafter. The effects of PTH, which were abrogated by cycloheximide (28 microg/ml), did not alter the stability of the BSP mRNA. The increased transcription was mimicked by both forskolin (10(-6) M) and isoproterenol (10(-7) M), and was also increased by 3-isobutyl-1-methylxanthine (IBMX; 10(-5) M), while the transcriptional activity induced by PTH was inhibited by the protein kinase A inhibitor, H89 (5x10(-6) M). From transient transfection assays using various BSP promoter-luciferase constructs, a pituitary-specific transcription factor-1 (Pit-1) regulatory element (nts -111 to -105) was identified as the target of transcriptional activation by PTH. Thus, transcriptional activity of constructs including the Pit-1 was enhanced approximately 4.7-fold by 10(-8) M PTH while 5'-ligation of the Pit-1 element conferred PTH regulation in an SV40 promoter construct. Binding of a nuclear protein, recognized by anti-Pit-1 antibodies, to a radiolabelled Pit-1-BSP probe was decreased in nuclear extracts prepared from PTH, forskolin and isoproterenol-stimulated ROS 17/2.8 cells. Moreover, co-transfection of ROS cells with a double-stranded Pit-1 oligonucleotide also increased luciferase activity. Collectively, these results indicate that PTH acts through a protein kinase A pathway involving cAMP to stimulate BSP transcription by blocking the action of a Pit-1-related nuclear protein that suppresses BSP transcription by binding a cognate element in the BSP promoter. Thus, we have identified a novel Pit-1 suppressor element in the rat BSP gene promoter that is the target of PTH-stimulated transcription of the BSP gene.
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Mizutani S, Inada T, Fukutomi K, Igarashi S, Ogata Y. [A patient with gastric cancer with para-aortic lymph node metastases surviving for 9 years after effective preoperative chemotherapy and radical operation]. Gan To Kagaku Ryoho 2000; 27:1433-6. [PMID: 10969602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
A 63-year-old male patient with type 3 advanced gastric cancer was referred to our hospital. Preoperative examination by CT-scan revealed swollen para-aortic lymph nodes and cancer invasion to the pancreas. The patient was treated pre-operatively with intravenous 5-FU, 500 mg/body/day, continuous infusion for 1 week. Immediately after the chemotherapy, the patient underwent total gastrectomy, splenctomy, left-adrenectomy and resection of the body and tail of the pancreas, along with para-aortic lymph node dissection. Microscopic examination revealed that the tumor was a moderately differentiated tubular adenocarcinoma, which displayed invasion to the pancreas with lymph node metastasis up to the level 3 lymph node. Histologically, the effect of preoperative chemotherapy showed a grade 2 effect on the main tumor, but a grade 3 chemotherapeutic effect was observed at the para-aortic lymph nodes. The patient has subsequently remained disease free for 9 years. In this case, it is considered that the preoperative chemotherapy by 5-FU and potentially curative radical operation yielded a good outcome.
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Inada T, Ogata Y, Kubota T, Tomikawa M, Yamamoto S, Andoh J, Ozawa I, Hishinuma S, Shimizu H, Kotake K. 5-fluorouracil sensitivity and dihydropyrimidine dehydrogenase activity in advanced gastric cancer. Anticancer Res 2000; 20:2457-62. [PMID: 10953310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND Dihydropyrimidine dehydrogenase (DPD) is the rate-limiting enzyme of 5-fluorouracil (5-FU) catabolism. Several studies have demonstrated the clinical importance of DPD in cancer patients, suggesting that the efficacy of 5-FU may be related to DPD activity in tumor tissue. In the present study, DPD activity and chemosensitivity to 5-FU were evaluated in advanced gastric cancer. MATERIALS AND METHODS Thirty-four gastric cancers from 32 patients were studied and chemosensitivity to 5-FU was evaluated by histoculture drug response assay. RESULTS AND CONCLUSION DPD activity and tumor inhibition of 5-FU among all cases showed no significant correlation, but among 14 histologically differentiated cases significant correlation was observed. DPD activity may be useful in determining the 5-FU sensitivity of differentiated gastric cancer.
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Takahashi S, Aiura K, Saitoh J, Hayatsu S, Kitajima M, Ogata Y. Treatment strategy for pancreatic head cancer: pylorus-preserving pancreatoduodenectomy, intraoperative radiotherapy and portal catheterization. Digestion 2000; 60 Suppl 1:130-4. [PMID: 10026447 DOI: 10.1159/000051469] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pancreatic cancer is the disease of gastrointestinal cancer with the poorest prognosis. At present, in addition to surgery, multimodality treatment combining a variety of therapeutic methods is used. We usually employ the following combination of surgery, radiotherapy and chemotherapy: D2 surgery with pylorus-preserving pancreatoduodenectomy (PPPD), intraoperative radiotherapy (IORT), and portal catheterization (PC) with fluorouracil as the chemotherapy. In this study, we made a historical comparison of PPPD and PD and obtained the following findings: (1) PPPD allows almost the same extent of D2 dissection as conventional PD, and achieves radical treatment without any problems; (2) suppression of local recurrence by IORT cannot be expected from the results of the comparison between the four approaches, i.e. surgery alone, surgery + IORT, surgery + PC and surgery + IORT + PC, and (3) the rate of liver metastasis in patients treated by PC was significantly low.
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Iguchi H, Imura G, Toh Y, Ogata Y. Expression of MTA1, a metastasis-associated gene with histone deacetylase activity in pancreatic cancer. Int J Oncol 2000; 16:1211-4. [PMID: 10811997 DOI: 10.3892/ijo.16.6.1211] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
MTA1 has been identified as a metastasis-promoting gene, and its gene expression is correlated with serosal invasion and lymph node metastasis in the gastrointestinal and esophageal cancers. We examined MTA1 mRNA expression levels in 13 cell lines and 23 tumor tissues of pancreatic cancer by quantitative reverse transcription polymerase chain reaction. MTA1 mRNA expression was found in all the cell lines, however its levels were not correlated with the metastatic pontential of each cell line representing hematogenous distant metastasis. In the pancreatic cancer tissues, the overexpression of MTA1 mRNA (tumor/normal ratio >/=1) was observed in 12 out of 23. Pancreatic cancer tissues overexpressing MTA1 mRNA (T/N ratio >/=1) tended to have higher incidence of lymph node metastasis. These results together with previous findings in the gastrointestinal and esophageal cancers suggest that MTA1 might be involved in the progression, particularly in lymph node metastasis of pancreatic cancer.
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Nakao S, Ogata Y, Shimizu-Sasaki E, Yamazaki M, Furuyama S, Sugiya H. Activation of NFkappaB is necessary for IL-1beta-induced cyclooxygenase-2 (COX-2) expression in human gingival fibroblasts. Mol Cell Biochem 2000; 209:113-8. [PMID: 10942208 DOI: 10.1023/a:1007155525020] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The immediate-early cyclooxygenase-2 (COX-2) gene encodes an inducible prostaglandin synthase enzyme which is implicated in inflammatory and proliferative diseases. COX-2 is highly induced during cell activation by various factors, including mitogens, hormones and cytokines. Since pro-inflammatory cytokine IL-1beta has been shown to induce prostaglandin E2 (PGE2) release in human gingival fibroblasts (HGF), here we analyzed the effect of IL-1beta on the expression of COX-2 and the activation of NFkappaB in HGF. Northern hybridization analysis revealed that IL-1beta (200 pg/ml) increased the expression of COX-2 mRNA in HGF. The effect of IL-1beta was abrogated by herbimycin A, a protein tyrosine kinase inhibitor, and enhanced by orthovanadate, a protein tyrosine phosphatase inhibitor. IL-1beta-induced PGE2 release was blocked by the tyrosine kinase inhibitor and increased by the tyrosine phosphatase inhibitor. The results of transient transfection assays using chimeric constructs of the human COX-2 promoter (nt -1432 approximately +59) ligated to a luciferase reporter gene indicated that IL-1beta stimulated the transcriptional activity approximately 1.5-fold. Gel mobility shift assays with a radiolabelled COX-2-NFkappaB oligonucleotide (nts-223 to-214) revealed an increase in the binding of nuclear proteins from IL-1beta-stimulated HGF. This increase of DNA-protein complex formation induced by IL-1beta was blocked by herbimycin A and another tyrosine kinase inhibitor, genistein. These results suggest that NFkappaB is an important transcription factor for IL-1beta-induced COX-2 gene expression, and is involved in inducing COX-2 gene transcription through tyrosine phosphorylation in HGF.
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