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Murata K, Kusachi S, Murakami T, Nogami K, Murakami M, Hirohata S, Tominaga Y, Komatsubara I, Tsuji T. Relation of iodine-123 metaiodobenzylguanidine myocardial scintigraphy to endomyocardial biopsy findings in patients with dilated cardiomyopathy. Clin Cardiol 2009; 20:61-6. [PMID: 8994740 PMCID: PMC6656273 DOI: 10.1002/clc.4960200113] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Iodine-123 metaiodobenzylguanidine (123I-MIBG) concentrates in adrenergic neurons and has been developed for evaluation of the sympathetic nervous system. Recent studies have demonstrated that the normal heart is clearly visualized by 123I-MIBG cardiac scintigraphy, whereas abnormal 123I-MIBG myocardial uptake and washout have been demonstrated in patients after myocardial infarction and in patients with congestive cardiomyopathy, long QT syndrome, and ventricular tachycardia. HYPOTHESIS Based on evidence from recent studies, it can be hypothesized that 123I-MIBG uptake is related to histopathologic changes in the myocardium. METHODS The relation of 123I-MIBG uptake to the histologic findings for the heart was studied in 24 patients with dilated cardiomyopathy (DCM). The study group did not include patients with complicating disorders that primarily affect the adrenergic nervous system. The 123I-MIBG uptake was visually assigned one of four grades using the two criteria of the mean score for six regional uptake grades (mean score) and the global score obtained by visual evaluation of the entire image (global score). The 123I-MIBG uptake score was also determined for the region at which the biopsy specimen was obtained (biopsy region score). The histologic findings were evaluated by assigning one of four grades for each of the following five factors: myocyte hypertrophy, myocardial fibrotic change, myocyte degeneration and necrosis, mononuclear cell infiltration, and myocyte disarray. The sum for all grades was defined as the total score, and the global score was also assigned to the overall histologic findings. RESULTS All of the global, mean, and biopsy region scores for 123I-MIBG uptake correlated significantly with the global and total scores for the histologic findings. Among the histologic factors, myocyte degeneration showed score correlated with all global, mean, and biopsy region scores for the uptake. Myocyte hypertrophy was associated weakly with the 123I-MIBG uptake scores. CONCLUSION These results indicate that 123I-MIBG uptake imaging is associated with histopathologic abnormalities in patients with DCM.
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Affiliation(s)
- K Murata
- First Department of Internal Medicine, Okayama University Medical School, Japan
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Ohta S, Nitta N, Sonoda A, Seko A, Tanaka T, Takahashi M, Kimura Y, Tabata Y, Murata K. Cisplatin-conjugated degradable gelatin microspheres: fundamental study in vitro. Br J Radiol 2008; 82:380-5. [PMID: 19098080 DOI: 10.1259/bjr/27737783] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The object of this study was to generate cisplatin-conjugated gelatin microspheres (GMSs) and to confirm the subsequent release of cisplatin in vitro. The GMSs (1 mg) were immersed in 50 microl of a cisplatin solution (0.06, 0.15, 0.27, 0.30 or 0.54 mg ml(-1)) at 38 degrees C to allow conjugation. The cisplatin-conjugated GMSs were then extensively washed in double-distilled water and freeze-dried. The platinum concentration in the GMSs samples was investigated as a function of the concentration of cisplatin solution used in their preparation, the number of immersions in cisplatin (1, 2, 3, 4 or 5) and the period of immersion (1, 6 or 11 h). In vitro release tests were performed at different time intervals (1, 3, 6, 12 or 24 h) to allow the rate of cisplatin release to be calculated. The platinum concentration of the GMSs increased in proportion to the concentration of cisplatin solution and the length or number of immersions in cisplatin. In vitro release tests demonstrate that the release rate (%) from GMSs after 1, 3, 6, 12 or 24 h was 4.8, 5.5, 7.6, 10.0 and 12.4, respectively. We demonstrated the ability of GMSs to bind cisplatin forming cisplatin-conjugated GMSs. Moreover, we showed that cisplatin continued to bind GMSs strongly during the in vitro release test.
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Affiliation(s)
- S Ohta
- Department of Radiology, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu City, Shiga, Japan.
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Onimaru Y, Tsukasaki K, Murata K, Imaizumi Y, Choi YL, Hasegawa H, Sugahara K, Yamada Y, Hayashi T, Nakashima M, Taguchi T, Mano H, Kamihira S, Tomonaga M. Autocrine and/or paracrine growth of aggressive ATLL cells caused by HGF and c-Met. Int J Oncol 2008; 33:697-703. [PMID: 18813782] [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: 05/26/2023] Open
Abstract
Adult T-cell leukemia/lymphoma (ATLL) is a neoplasia characterized by the massive invasion of various organs by tumor cells. Previously, we found that expression of the gene for c-Met, a receptor tyrosine kinase for hepatocyte growth factor (HGF), was specific to the acute type among 41 patients with ATLL by microarray. First in the present study, we analyzed the survival of the patients in relation to expression of c-Met and HGF in ATLL cells. Expression of the former but not the latter was associated with poor prognosis. Then, we analyzed the growth of ATLL cells caused by HGF and c-Met. c-Met was expressed in 0/7 chronic ATLLs, 12/14 acute ATLLs, 1/1 IL-2-independent ATLL cell line and 1/7 IL-2-dependent ATLL cell lines as assessed by flow cytometry. HGF induced the proliferation of primary cells from most acute cases examined as well as the c-Met-positive KK1 cell line in contrast to c-Met-negative cells. HGF induced autophosphorylation of c-Met in c-Met-positive cells from an acute case and KK1 cells. The plasma level of HGF was elevated in acute as compared to chronic cases. The levels of HGF and/or IL-6 which induces the production of HGF by stromal cells, were elevated in the supernatant of short-term cultured cells from certain patients with acute or chronic disease. Finally, infiltrated ATLL cells and adjacent stromal cells in liver were shown to be positive for c-Met/HGF and HGF, respectively, in acute cases. Autocrine and/or paracrine growth caused by HGF and c-Met was suggested in aggressive ATLL cells secreting HGF and/or IL-6, respectively.
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Affiliation(s)
- Y Onimaru
- Department of Hematology and Molecular Medicine, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
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154
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Onishi M, Furukawa A, Takahashi M, Murata K. A wide variety of dynamic contrast-enhanced MR appearances of breast cancer: pathologic correlation study. Clin Imaging 2008. [DOI: 10.1016/j.clinimag.2008.04.018] [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: 10/21/2022]
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155
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Tomita N, Okamura S, Nakata K, Murata K, Tokunaga Y, Umeki M, Takiuchi H, Furukawa H. Phase II trial of a combination chemotherapy of CPT-11 and S-1 in patients with advanced/recurrent colorectal cancer (OGSG- 0405). J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15029] [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: 11/20/2022] Open
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156
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Murata K, Toriumi Y, Nakamura T, Nakajima K, Kamei T, Kobayashi S. A STUDY ON PERIPHERAL BLOOD VISCOSITY AND CEREBROVASCULAR DISEASE RISK. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70713-x] [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: 11/30/2022]
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157
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Kawahara K, Saito E, Matsushita S, Shimizu J, Ishida C, Takahara R, Hayano K, Chuhyang C, Murata K, Kinoshita M. P2.020 Bene.t of a music exercise program incorporating elocution with abdominal respiration in the elderly living in the community. Parkinsonism Relat Disord 2008. [DOI: 10.1016/s1353-8020(08)70249-9] [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: 11/24/2022]
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Abstract
Discal cysts--intraspinal cysts communicating with an adjacent intervertebral disc--are an uncommon cause of lumbar radiculopathy. We report a case of discal cyst of the lumbar spine. The cyst contents were bloody and clotted rapidly; no disc materials were seen. Communication between the cyst and the intervertebral disc was detected. Histopathology of the cyst wall revealed fibrous connective tissue without synovial lining cells. We hypothesise that the discal cyst was formed by haemorrhage of the epidural venous plexus caused by separation of the peridural membrane by mechanical force transmitted by an annulus fibrosis fissure. The minute segmental motion caused by the affected disc may have stimulated continuous bleeding.
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Affiliation(s)
- K Murata
- Department of Orthopaedic Surgery, Kyoto City Hospital, Kyoto, Japan.
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159
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Murata K, Fox-Talbot K, Qian Z, Takahashi K, Stahl GL, Baldwin WM, Wasowska BA. Synergistic deposition of C4d by complement-activating and non-activating antibodies in cardiac transplants. Am J Transplant 2007; 7:2605-14. [PMID: 17868071 DOI: 10.1111/j.1600-6143.2007.01971.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [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: 01/25/2023]
Abstract
The role of non-complement-activating alloantibodies in humoral graft rejection is unclear. We hypothesized that the non-complement-activating alloantibodies synergistically activate complement in combination with complement-activating antibodies. B10.A hearts were transplanted into immunoglobulin knock out (Ig-KO) mice reconstituted with monoclonal antibodies to MHC class I antigens. In allografts of unreconstituted Ig-KO recipients, no C4d was detected. Similarly, reconstitution with IgG1 or low dose IgG2b alloantibodies did not induce C4d deposition. However, mice administered with a low dose of IgG2b combined with IgG1 had heavy linear deposits of C4d on vascular endothelium. C4d deposits correlated with decreased graft survival. To replicate this synergy in vitro, mononuclear cells from B10.A mice were incubated with antibodies to MHC class I antigens followed by incubation in normal mouse serum. Flow cytometry revealed that both IgG2a and IgG2b synergized with IgG1 to deposit C4d. This synergy was significantly decreased in mouse serum deficient in mannose binding lectin (MBL) and in serum deficient in C1q. Reconstitution of MBL-A/C knock out (MBL-KO) serum with C1q-knock out (C1q-KO) serum reestablished the synergistic activity. This suggests a novel role for non-complement-activating alloantibodies and MBL in humoral rejection.
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Affiliation(s)
- K Murata
- Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
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160
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Takeuchi K, Kitazawa S, Hamanishi S, Inagaki M, Murata K. A case of alpha-fetoprotein-producing adenocarcinoma of the endometrium with a hepatoid component as a potential source for alpha-fetoprotein in a postmenopausal woman. Int J Gynecol Cancer 2007; 16:1442-5. [PMID: 16803544 DOI: 10.1111/j.1525-1438.2006.00613.x] [Citation(s) in RCA: 15] [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: 12/13/2022] Open
Abstract
Although case reports of alpha-fetoprotein (AFP)-producing adenocarcinoma other than hepatocellular carcinoma have gradually increased in number, AFP-producing adenocarcinoma of the endometrium is very rare. The patients universally complain of abnormal vaginal bleeding. The patient presented with complaints of epigastric discomfort. No vaginal bleeding was observed. Serum AFP concentration was 453 ng/mL, and lens culinaris agglutinin-reactive AFP percentage of total AFP was increased to 67%. Radiologic imaging and endoscopy did not provide evidence of any primary carcinoma in the liver and gastrointestinal tract. To investigate the unknown origin of high AFP, Pap smear of the endometrium followed by fractional curettage was performed and revealed adenocarcinoma of the endometrium. Radical hysterectomy with pelvic lymph node dissection and partial omentectomy was performed. Histologic study showed a mixture of major AFP-negative endometrioid adenocarcinoma and minor medullary proliferation of the AFP-positive hepatoid adenocarcinoma cells with eosinophilic cytoplasm and hyaline globules. After the surgery followed by four courses of weekly carboplatin and paclitaxel administration, serum levels of AFP dropped into normal range. The possible existence of AFP-producing adenocarcinoma of the endometrium should be considered in a postmenopausal woman even if there is no vaginal bleeding, when AFP-producing tumor is clinically suspected and the imaging studies fail to confirm the diagnosis.
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Affiliation(s)
- K Takeuchi
- Department of Obstetrics and Gynecology, Hyogo Prefectural Tsukaguchi Hospital, 6-8-17 Minami-tsukaguchicho, Amagasaki 661-0012, Japan.
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Lane VM, Liu IKM, Casey K, vanLeeuwen EMG, Flanagan DR, Murata K, Munro C. Inoculation of female American black bears (Ursus americanus) with partially purified porcine zona pellucidae limits cub production. Reprod Fertil Dev 2007; 19:617-25. [PMID: 17601409 DOI: 10.1071/rd06154] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Accepted: 04/09/2007] [Indexed: 11/23/2022] Open
Abstract
The present 2-year study investigated the feasibility of using porcine zona pellucidae (pZP) as antigen for immunocontraception in American black bears. Sows, 3–6 years of age, were administered either two doses of 250 µg pZP with Freund’s adjuvant (n = 10) or adjuvant alone (n = 5), one in April and one in May, and were kept away from the boars until June. Serum samples were collected before injections and before denning (November). The presence of sows with cubs at side was observed during premature emergence from denning. First-year results indicated that anti-pZP antibody titres in vaccinated sows were 2.5–9.0-fold (range) higher compared with non-vaccinated sows and that the vaccinated sows were threefold less likely to become pregnant (P = 0.167). Control and vaccinated bears produced 1.6 and 0.2 cubs per sow, respectively (P = 0.06). The second-year study investigated the feasibility of using pZP sequestered in a controlled-release pellet and a water-soluble adjuvant (QS-21) to avoid regulatory problems associated with Freund’s adjuvant. Sows in the treatment group (n = 22) were administered a single dose of an emulsion of 250 µg pZP and 150 μg QS-21 plus a pellet containing 70–90 µg pZP for delayed release as booster dose. Control sows (n = 5) received the QS-21 adjuvant in pellet alone. Serum samples were collected before inoculations (April) and before denning (November). Seven cubs were born to the five control sows, but none was born to the 22 vaccinated sows (P < 0.001). Anti-pZP antibody mean absorbance ratios in control sows remained at background levels, whereas vaccinated sows had ratios fourfold higher than controls. Two-dimensional polyacrylamide gel electrophoresis and immunohistochemical localisation confirmed immunoreactivity of sera from inoculated bears. We conclude that cub production in the American black bear can be effectively limited with either two injections of 250 μg pZP or a single inoculation of partially purified pZP sequestered in controlled-release pellets.
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Affiliation(s)
- V M Lane
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
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163
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Mikami B, Malle D, Yoon HJ, Demirkan-Sarikaya E, Iwamoto H, Katuya Y, Murata K, Utsumi S. X-ray crystallographic analysis of type I pullulanases from Klebsiella pneumoniaeand Bacillus subtilis. Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306096954] [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: 11/11/2022] Open
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164
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Saiki S, Sakai K, Saiki M, Kitagawa Y, Umemori T, Murata K, Matsui M, Hirose G. Varicose veins associated with CADASIL result from a novel mutation in the Notch3 gene. Neurology 2006; 67:337-9. [PMID: 16864835 DOI: 10.1212/01.wnl.0000224758.52970.19] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [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: 11/15/2022] Open
Abstract
No genetically diagnosed cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) pedigrees with venous insufficiency have been described. In a CADASIL pedigree with varicose veins, the authors have identified a novel heterozygous mutation in the 3' splice acceptor site of intron 15 of the Notch3 gene. This, based on mRNA analysis, resulted in skipping of exon 16 including eight cysteine residues of EGF-like repeats.
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Affiliation(s)
- S Saiki
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan.
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165
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Kato T, Miyake Y, Ikenaga M, Mishima H, Fukunaga M, Murata K, Ota H, Sekimoto M, Sakamoto J, Monden M. In-depth analysis of high effectivity in phase II study (irinotecan and doxifluridine, an intermediate form of capecitabine) for metastatic colorectal cancer: MCSGO, Colorectal Cancer Treatment Group. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.13570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
13570 Background: We have already reported the results of the Phase II multicenter study [a combination of irinotecan (CPT-11) and doxifluridine (5’-DFUR) for MCRC], including the survival period (2006 GI Cancer Symposium Abst #130). In this report, we mention the details of the treatment introduced after this combination and discuss the response observed in each metastatic lesion. Methods: The subjects were 60 CPT-11 naive patients with MCRC. They had a measurable disease that satisfied the RECIST criteria and had gone through not more than one regimen of chemotherapy (median age: 64 years (28–74); male/female: 37/23; ECOG PS 0/1: 52/8; main location of metastatic lesion: liver 31, lung 13, lymph node 15). CPT-11 (150 mg/m2, i.v.) was administered on days 1 and 15, 5’-DFUR (800 mg/body, p.p.) was administered day 3 to 15 and day 17 to 28. One cycle of treatment consisted of 5 weeks. No requirements were imposed on the follow-up treatment. Results: According to the results of this regimen, ORR was 40% [23/60, CR;1, PR;23], OS was 20.5 months, and PFS was 5.9 months. The main NCI-CTC grade 3–4 adverse events included neutropenia (28.3%), fatigue (11.6%), nausea (8.3%), vomiting (6.6%), and diarrhea (5.0%).A follow-up therapy regimen was selected and implemented by each investigator. The main regimens adopted for the 49 patients who received this combination as a 1st line therapy included FOLFOX (n=10), hepatic arterial infusion (HAI) (n=10), and others (n=13). 16 patients received no follow-up therapy. The duration of treatment was 5.0 months in the case of 2nd line therapy and 3.0 months in the case of 3rd line therapy. The response rate by metastatic lesion was as follows: liver 35.4% (11/31, PR;11), lung 53.5% (7/13, CR;1, PR;6), and lymph node 46.6% (7/15, PR;7). Conclusions: The combination of CPT-11 and 5’-DFUR is effective in treating lung metastasis and HAI in treating liver metastasis was suggested. No significant financial relationships to disclose.
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Affiliation(s)
- T. Kato
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - Y. Miyake
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - M. Ikenaga
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - H. Mishima
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - M. Fukunaga
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - K. Murata
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - H. Ota
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - M. Sekimoto
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - J. Sakamoto
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
| | - M. Monden
- Minoh city Hospital, Minoh, Japan; Osaka National Hospital, Osaka, Japan; Sakai Municipal Hospital, Sakai, Japan; Suita Municipal Hospital, Suita, Japan; Osaka Saiseikai Senri Hospital, Suita, Japan; Osaka University Hospital, Suita, Japan; Kyoto University, Kyoto, Japan
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166
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Narahara H, Sugimoto N, Tomita N, Murata K, Fukunaga M, Ohue M, Sakaeda T, Ishida H, Tanimoto K, Nishiyama M. Pharmacogenomic analysis for individual response to CPT-11 in colorectal cancer: Prediction formula of tumor response using novel marker genes and genotypes associated with the toxicity. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.2060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2060 Background: Despite recent encouraging data, the clinical efficacy and toxicity of CPT-11 in most colorectal cancer patients remain unpredictable. We conducted this prospective study to develop a prediction formula of efficacy using expression data of genes newly identified in vitro and to evaluate the clinical significance of several genetic polymorphisms known as potent predictors of toxicity. Methods: CPT-11 was intravenously administered on Days 1, 8, and 15, every 4 weeks in chemo-naive patients with stage IV colorectal cancer after palliative operation. Tumor samples were collected at surgery and PK analysis was done on day 1 of cycle 1. Tumor response and toxicity were evaluated by RECIST and CTCAE, respectively. Results: Forty seven pts were enrolled. All pts were assessed for tumor response, toxicity, gene expression, genotype, and PK. Partial response was obtained in 11 cases, and common grade 3/4 toxicities were neutropenia (15%), leucopenia (5%), and diarrhea (4%). Despite no correlation of UGT1A1*28 (hetero=5, homo=1) alone with the toxicities, there were associations between UGT1A1*28 or *7 (hetero=1) with UGT1A1 -64G>C (hetero=3) and G3/4 leucopenia (p=0.036). UGT1A1 1091C>T (hetero=3) was found to be associated with leucopenia (p=0.0009), neutropenia (p=0.012), and diarrhea (p=0.036). UGT1A1 1091C>T, ABCC2 -24C>T and 3972C>T were correlated with SN-38 AUC. We identified 7 novel potent marker genes including AMD1, CTSC, and EIF1AX for CPT-11 efficacy in vitro, through 2 different microarray analyses and subsequent real-time RT-PCR. We then successfully developed the best linear model, which converted the quantified expression data into objective tumor response, using 18 data sets of gene expression and clinical response. Utility-confirmation analyses using other clinical samples appeared to show that the formula could accurately predict tumor response (r=0.712, p=0.042). Conclusions: Polygenetic strategies using several known polymorphisms for toxicity and a prediction formula using 7 novel genes for efficacy would be of predictive value for individual response to CPT-11. No significant financial relationships to disclose.
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Affiliation(s)
- H. Narahara
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - N. Sugimoto
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - N. Tomita
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - K. Murata
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - M. Fukunaga
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - M. Ohue
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - T. Sakaeda
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - H. Ishida
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - K. Tanimoto
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
| | - M. Nishiyama
- ICSG (Individualized Chemotherapy Study Group), Hiroshima University, Hiroshima, Japan; Kansairosai Hospital, Amagasaki, Japan; Suita Municipal Hospital, Suita, Japan; Sakai City Hospital, Sakai, Japan; Osaka Medical Center Cancer for Cardiovascular Disease, Osaka, Japan; Kobe University, Kobe, Japan; Osaka Seamen’s Insurance Hosp, Osaka, Japan
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167
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Minami K, Murata K, Lee CY, Fox-Talbot K, Wasowska BA, Pescovitz MD, Baldwin WM. C4d deposition and clearance in cardiac transplants correlates with alloantibody levels and rejection in rats. Am J Transplant 2006; 6:923-32. [PMID: 16611328 DOI: 10.1111/j.1600-6143.2006.01281.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [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: 01/25/2023]
Abstract
Antibody-mediated rejection of human cardiac transplants is correlated with C4d deposits and macrophage infiltrates in capillaries of endomyocardial biopsies. We produced an antibody to rat C4d to study C4d deposition and clearance in Lewis rats that were sensitized with a blood transfusion from DA rats 7, 14 or 21 days before cardiac transplantation. Cyclosporin A (CsA) immunosuppression was initiated after transplantation at a dose that inhibited graft rejection, antibody production and C4d deposition in unsensitized recipients. Blood transfusion elicited high levels of circulating IgG alloantibodies, predominantly of the complement-activating IgG2b subclass, that peaked 14 days after transplantation. At this time, macrophages accumulated in capillaries, and C4d deposits were diffuse and intense on arteries, capillaries and veins. Grafts that survived 90 days in sensitized recipients still had deposits of C4d that were associated with increased interstitial fibrosis and vasculopathy in arteries. Clearance of C4d was determined by retransplanting DA cardiac allografts from Lewis recipients back to DA recipients. C4d deposits were decreased to minimal levels within 5 days after retransplantation. Thus, C4d deposition is not limited to the capillaries, but extends throughout the arterial tree, and despite formation of a covalent bond, C4d is cleared within days.
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Affiliation(s)
- K Minami
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
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168
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Furukawa A, Sakoda M, Yamasaki M, Kono N, Tanaka T, Nitta N, Kanasaki S, Imoto K, Takahashi M, Murata K, Sakamoto T, Tani T. Gastrointestinal tract perforation: CT diagnosis of presence, site, and cause. ACTA ACUST UNITED AC 2006; 30:524-34. [PMID: 16096870 DOI: 10.1007/s00261-004-0289-x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [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: 01/06/2023]
Abstract
Gastrointestinal tract perforation is an emergent condition that requires prompt surgery. Diagnosis largely depends on imaging examinations, and correct diagnosis of the presence, level, and cause of perforation is essential for appropriate management and surgical planning. Plain radiography remains the first imaging study and may be followed by intraluminal contrast examination; however, the high clinical efficacy of computed tomographic examination in this field has been well recognized. The advent of spiral and multidetector-row computed tomographic scanners has enabled examination of the entire abdomen in a single breath-hold by using thin-slice sections that allow precise assessment of pathology in the alimentary tract. Extraluminal air that is too small to be detected by conventional radiography can be demonstrated by computed tomography. Indirect findings of bowel perforation such as phlegmon, abscess, peritoneal fluid, or an extraluminal foreign body can also be demonstrated. Gastrointestinal mural pathology and associated adjacent inflammation are precisely assessed with thin-section images and multiplanar reformations that aid in the assessment of the site and cause of perforation.
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Affiliation(s)
- A Furukawa
- Department of Radiology, Shiga University of Medical Science, Seta Tsukinowa-cho Otsu, Shiga 520-2192, Japan.
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169
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Ko MJ, Murata K, Hwang DS, Parvin JD. Inhibition of BRCA1 in breast cell lines causes the centrosome duplication cycle to be disconnected from the cell cycle. Oncogene 2006; 25:298-303. [PMID: 16170356 DOI: 10.1038/sj.onc.1209028] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [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: 11/09/2022]
Abstract
BRCA1-dependent ubiquitination activity regulates centrosome number in several tissue culture cell lines derived from breast cells. In these experiments, we asked how BRCA1 inhibits centrosome amplification. In general, supernumerary centrosomes can accumulate by three mechanisms: (1) failed cytokinesis and the accumulation of centrosomes by duplication in a repeated S-phase of the cell cycle, (2) disruption of the licensing of centrosome doubling such that they duplicate at inappropriate times in the cell cycle, or (3) fragmentation of the centrosomes. In this study, we found that inhibition of BRCA1 caused premature separation of centrioles and reduplication. By blocking cells in early S-phase before centrosome amplification secondary to BRCA1 inhibition could occur and then releasing, we found that inhibition of BRCA1 caused centrosome amplification between late S-phase and G2/M before the cell divided. These results suggest that normal BRCA1 function is critical in these cell lines to prevent centriole separation and centrosome reduplication before mitosis.
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Affiliation(s)
- M J Ko
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Korea
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170
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Kadowaki T, Sekikawa A, Murata K, Maegawa H, Takamiya T, Okamura T, El-Saed A, Miyamatsu N, Edmundowicz D, Kita Y, Sutton-Tyrrell K, Kuller LH, Ueshima H. Japanese men have larger areas of visceral adipose tissue than Caucasian men in the same levels of waist circumference in a population-based study. Int J Obes (Lond) 2006; 30:1163-5. [PMID: 16446744 DOI: 10.1038/sj.ijo.0803248] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Visceral adipose tissue (VAT) is an independent risk factor for metabolic and cardiovascular disorders. There has been no study that demonstrated different abdominal fat distribution between Asian and Caucasian men. As the Japanese are less obese but more susceptible to metabolic disorders than Caucasians, they may have larger VAT than Caucasians at similar levels of obesity. We compared the abdominal fat distribution of the Japanese (n=239) and Caucasian-American (n=177) men aged 40-49 years in groups stratified by waist circumference in a population-based sample. We obtained computed tomography images and determined areas of VAT and subcutaneous adipose tissue (SAT). We calculated VAT to SAT ratio (VSR). The Japanese men had a larger VAT and VSR in each stratum, despite substantially less obesity overall. In multiethnic studies, difference in abdominal fat distribution should be considered in exploring factors related to obesity.
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Affiliation(s)
- T Kadowaki
- Department of Health Science, Shiga University of Medical Science, Shiga, Japan.
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171
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Takeuchi K, Kitazawa S, Hamanishi S, Inagaki M, Murata K. A case of alpha-fetoprotein–producing adenocarcinoma of the endometrium with a hepatoid component as a potential source for alpha-fetoprotein in a postmenopausal woman. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200605000-00076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Although case reports of alpha-fetoprotein (AFP)–producing adenocarcinoma other than hepatocellular carcinoma have gradually increased in number, AFP-producing adenocarcinoma of the endometrium is very rare. The patients universally complain of abnormal vaginal bleeding. The patient presented with complaints of epigastric discomfort. No vaginal bleeding was observed. Serum AFP concentration was 453 ng/mL, and lens culinaris agglutinin–reactive AFP percentage of total AFP was increased to 67%. Radiologic imaging and endoscopy did not provide evidence of any primary carcinoma in the liver and gastrointestinal tract. To investigate the unknown origin of high AFP, Pap smear of the endometrium followed by fractional curettage was performed and revealed adenocarcinoma of the endometrium. Radical hysterectomy with pelvic lymph node dissection and partial omentectomy was performed. Histologic study showed a mixture of major AFP-negative endometrioid adenocarcinoma and minor medullary proliferation of the AFP-positive hepatoid adenocarcinoma cells with eosinophilic cytoplasm and hyaline globules. After the surgery followed by four courses of weekly carboplatin and paclitaxel administration, serum levels of AFP dropped into normal range. The possible existence of AFP-producing adenocarcinoma of the endometrium should be considered in a postmenopausal woman even if there is no vaginal bleeding, when AFP-producing tumor is clinically suspected and the imaging studies fail to confirm the diagnosis.
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172
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Kadowaki T, Sekikawa A, Okamura T, Takamiya T, Murata K, Nakamura Y, Mitsunami K, Kita Y, Kuller L, Ueshima H. Mo-P1:31 Influence of cigarette smoking on coronary and aortic calcification among community-based Japanese young men. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)80166-2] [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: 11/16/2022]
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173
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Stoops MA, Liu IKM, Shideler SE, Lasley BL, Fayrer-Hosken RA, Benirschke K, Murata K, van Leeuwen EMG, Anderson GB. Effect of porcine zonae pellucidae immunisation on ovarian follicular development and endocrine function in domestic ewes (Ovis aries). Reprod Fertil Dev 2006; 18:667-76. [PMID: 16930513 DOI: 10.1071/rd05045] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [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: 04/14/2005] [Accepted: 04/11/2006] [Indexed: 11/23/2022] Open
Abstract
Domestic ewes (Ovis aries) were immunised with porcine zonae pellucidae (pZP) or pZP conjugated to keyhole limpet haemocyanin (KLH) in adjuvant(s) to examine the feasibility of the species to serve as a model for further development of pZP-based vaccines in ungulates. Two immunisation groups were employed, with a third group receiving only adjuvant (n = 5 per group). Early in the study, oestrous activity was monitored by the use of a vasectomised ram fitted with a marking harness. Eventually, ewes were exposed to an intact ram for breeding. In addition, weekly serum and every-other-day faecal samples were collected to measure pZP antibodies and progesterone metabolite concentrations respectively. At the conclusion of the study, fecundity was established, and ovarian tissue was examined. Ewes immunised against pZP : KLH with adjuvant produced minimal antibody absorbance levels, displayed normal oestrous cycles, became pregnant upon introduction of the intact ram and exhibited normal ovarian histopathology. Ewes immunised against pZP with adjuvant produced high antibody absorbance levels, were acyclic following primary immunisation and were infertile. Examination of the ovarian tissue revealed atrophic changes that included: (1) the absence of growing follicles; (2) significant reduction in the number of primordial follicles; and (3) the presence of abnormal granulosa cell clusters lacking oocytes. Antisera displayed immunoreactivity to the major components of pZP, and immunohistochemical labelling of ovarian tissue showed specificity to the ZP. These data are the first generated in an ungulate species showing deleterious effects of pZP immunisation on folliculogenesis and oestrous cyclicity.
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Affiliation(s)
- M A Stoops
- Department of Animal Science, University of California, Davis, CA 95616, USA.
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174
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Okamura T, Kadowski T, Sekikawa A, Murata K, Miyamatsu N, Takamiya T, El-Saed A, Nakamura Y, Kashiwagi A, Ueshima H. Tu-P9:368 Alcohol consumption and coronary artery calcification detected by electron-beam computed tomography in middle-aged Japanese men. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81070-6] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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175
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Miyamatsu N, Kadowaki T, Okamura T, Sekikawa A, Murata K, Kashiiwagi A, Nakamura Y, Takamiya T, Kita Y, Ueshima H. Mo-P1:58 The relationship between alcohol intake and traditional or non-traditional risk factors for cardiovascular disease in the middle-aged Japanese men. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)80193-5] [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: 10/23/2022]
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176
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Omata Y, Umeshita Y, Murao T, Kano R, Kamiya H, Kudo A, Masukata Y, Kobayashi Y, Maeda R, Saito A, Murata K. Toxoplasma gondii Does Not Persist In Goldfish (Carassius auratus). J Parasitol 2005; 91:1496-9. [PMID: 16539041 DOI: 10.1645/ge-3503rn.1] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Recent reports of toxoplasmosis in marine mammals raise concern that cold-blooded marine animals are a potential source of Toxoplasma gondii infection. To examine the transmissibility of T. gondii to fish, we observed the development of T. gondii tachyzoites inoculated into oviduct epithelial cells of goldfish (Carassius auratus) microscopically in vitro. Further, the survival period of tachyzoites inoculated into goldfish muscle was bioassayed in mice and through PCR analysis. In cell cultures at 37 C, both RH and Beverley strains of T. gondii tachyzoites had penetrated into cells at 6 hr post inoculation, and were multiplying. In cell cultures at 33 C, many tachyzoites of both strains attached to the host cells, but no intracellular tachyzoites were observed at 24 hr post inoculation. In the T. gondii inoculated goldfish kept at 33 C, tachyzoite DNA was detected in the inoculated region on day 3, but not on day 7. When inoculated goldfish were kept at 37 C, live tachyzoites were seen at the inoculation site on day 3, but not on day 7. These results suggest that T. gondii does not persist in fish.
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Affiliation(s)
- Y Omata
- Department of Basic Veterinary Science, School of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Japan.
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177
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Kamihira S, Sugahara K, Tsuruda K, Minami S, Uemura A, Akamatsu N, Nagai H, Murata K, Hasegawa H, Hirakata Y, Takasaki Y, Tsukasaki K, Yamada Y. Proviral status of HTLV-1 integrated into the host genomic DNA of adult T-cell leukemia cells. ACTA ACUST UNITED AC 2005; 27:235-41. [PMID: 16048490 DOI: 10.1111/j.1365-2257.2005.00698.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [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]
Abstract
Human T-cell leukemia virus type-1 (HTLV-1) is the etiological agent of adult T-cell leukemia (ATL), and leukemic cells always carry the proviral genome monoclonally integrated into their host genomes at the same sequence site, designated as the monoclonal integration. Using Southern blot hybridization (SBH) and sequenced tagged site polymerase chain reaction assays, we examined the proviral status in 558 clinical specimens from 350 patients who are suspected to have ATL. A total of 321 specimens (57.5%) from 241 patients showed positive results for the monoclonal integration according to SBH, using EcoR1 and Pst1. The 241 patients consisted of 136 patients (56.4%) with the complete provirus (C-type), 62 patients (25.7%) with a defective provirus (D-type), and 43 patients (17.8%) with multibands (M-type). The incidence of the D- and M-types were in the order of smoldering, chronic, and acute subtypes of ATL, suggesting that such an aberrant proviral status is generated on the way to multistep carcinogenesis and is subsequently clinically important for the malignant behavior of the disease. Moreover, our data showed that the partial deletion of the proviral genome is initiated first at the site of the gag region and spreads into the sites of the pol and env regions, whereas the long terminal repeats and pX regions are almost always conserved. These results suggest that analysis of the proviral status provides useful diagnostic and virologic-oncological information about ATL and HTLV-1 pathology, especially the important role of pX gene in tumorigenesis.
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Affiliation(s)
- S Kamihira
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki City, Japan 852-8501.
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178
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Kawai S, Mori S, Mukai T, Matsukawa H, Matuo Y, Murata K. Establishment of a mass-production system for NADP using bacterial inorganic polyphosphate/ATP-NAD kinase. J Biosci Bioeng 2005; 92:447-52. [PMID: 16233126 DOI: 10.1263/jbb.92.447] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2001] [Accepted: 09/03/2001] [Indexed: 11/17/2022]
Abstract
The inorganic polyphosphate/ATP-dependent NAD kinase (Ppnk) of Mycobacterium tuberculosis was applied to the mass-production of NADP from NAD and inorganic polyphosphate (metaphosphate). When Ppnk purified from recombinant Escherichia coli cells overexpressing the M. tuberculosis Ppnk was used, 30 mM (27 g/l) NADP was produced from 50 mM NAD and 100 mg/ml metaphosphate at 37 degrees C and pH 7.0. The recombinant E. coli cells were immobilized in polyacrylamide gel, and treated with acetone to render the cells permeable to substrates and products. When acetone-treated immobilized cells were used, 16 mM (14 g/l) NADP was produced from 50 mM NAD and 100 mg/ml metaphosphate at 37 degrees C and pH 7.0. The isolation of NADP formed in the reaction mixture was easy because of the absence of by-products (ATP degradation compounds), and this NADP production system using purified Ppnk or immobilized recombinant E. coli cells expressing Ppnk is thought to be feasible in the production of NADP on an industrial scale.
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Affiliation(s)
- S Kawai
- Department of Basic and Applied Molecular Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Kyoto 611-0011, Japan
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179
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Affiliation(s)
- N Yamamoto
- First Department of Internal Medicine, Mie University School of Medicine, Mie, Japan
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180
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Ikenaga M, Kato T, Mishima H, Fukunaga M, Murata K, Tominaga S, Kano T, Morita S, Sekimoto M, Sakamoto J, Monden M. A multicenter phase 2 study of irinotecan (CPT-11) and doxifluridine (5’-DFUR), an intermediate form of capecitabine, for metastatic colorectal cancer (MCRC). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3698] [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)
- M. Ikenaga
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - T. Kato
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - H. Mishima
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - M. Fukunaga
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - K. Murata
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - S. Tominaga
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - T. Kano
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - S. Morita
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - M. Sekimoto
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - J. Sakamoto
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
| | - M. Monden
- MCSGO Colorectal Cancer Treatment Group, Suita, Osaka, Japan; ECRIN, Kyoto, Japan
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181
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Murata K, Kubota T. Impairment of chest wall mechanics and increased chest wall work of breathing cause postoperative respiratory failure in patients who have undergone radical esophagectomy. J Anesth 2005; 15:125-31. [PMID: 14566508 DOI: 10.1007/s005400170012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE We verified the hypothesis that impairment of chest wall mechanics would be related to the cause of postoperative respiratory failure in patients undergoing radical esophagectomy. METHODS A total of 21 patients were studied. After management with mechanical ventilation to prevent respiratory failure for several days, trial weaning from the ventilator was performed. The patients were divided into a successful weaning group (S group) and an unsuccessful weaning group (US group), depending on the results of the weaning trial. We compared respiratory mechanics and the respiratory work of breathing during weaning from the ventilator between the two groups. RESULTS In the US group, lung and chest wall compliance was significantly lower and the development of intrinsic positive end-expiratory pressure (PEEPi) was observed. The work of breathing and the oxygen cost of breathing were significantly higher in the US group. The increased respiratory energy work was due to a moderate increase in lung work and a significant increase in chest wall work. CONCLUSION Our results suggested that postoperative respiratory failure was related to increased respiratory energy expenditure, significantly deteriorated chest wall mechanics, and increased chest wall work, all of which are involved in the development of postoperative respiratory failure after radical esophagectomy.
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Affiliation(s)
- K Murata
- Department of Intensive Care Medicine, Jichi Medical School, 3311-1 Yakushiji, Minamikawachimachi, Tochigi 329-04, Japan
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182
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Uemura H, Kamada M, Maegawa M, Ohmoto Y, Murata K, Kuwahara A, Matsuzaki T, Yasui T, Takeji T, Irahara M. Effect of hormone replacement therapy on the production of bone-resorbing cytokines by peripheral blood cells in postmenopausal women. Horm Metab Res 2005; 37:226-30. [PMID: 15952082 DOI: 10.1055/s-2005-861382] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We studied the effects of hormone replacement therapy (HRT) with estrogen on postmenopausal changes in the production of bone-resorbing cytokines interleukin 1 beta (IL-1beta) and tumor necrosis factor alpha (TNFalpha). Both cytokines were measured in the supernatants of lipopolysaccharide (LPS)-stimulated whole-blood cells from 72 untreated and 44 HRT-treated women by ELISA. The levels of IL-1beta were significantly higher in women in their 40s and 50s and in postmenopausal women than in women in their teens, 20s and 30s, while the levels of TNFalpha did not show any changes related to age. Both levels in HRT-treated women were significantly lower than those in untreated women at almost every postmenopausal stage. In a prospective study, HRT induced significant declines in both levels. These results show that estrogen decreases the accelerated production of IL-1beta and reduces the production of TNFalpha in postmenopausal women at each postmenopausal stage, even in late-postmenopausal women.
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Affiliation(s)
- H Uemura
- Department of Obstetrics and Gynecology, School of Medicine, University of Tokushima, Tokushima, Japan.
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183
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Liu IKM, Turner JW, Van Leeuwen EMG, Flanagan DR, Hedrick JL, Murata K, Lane VM, Morales-Levy MP. Erratum: Persistence of anti-zonae pellucidae antibodies following a single inoculation of porcine zonae pellucidae in the domestic equine. Reproduction 2005. [DOI: 10.1530/rep.1.00168e] [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: 11/08/2022]
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184
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Sugimoto K, Shiraki K, Yamanaka Y, Yamamoto N, Murata K, Nakano T. Images of interest. Hepatobiliary and pancreatic: Tumor thrombi in esophageal varices. J Gastroenterol Hepatol 2005; 20:651. [PMID: 15836721 DOI: 10.1111/j.1440-1746.2005.03872.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- K Sugimoto
- First Department of Internal Medicine, Mie University School of Medicine, Tsu, Mie 514-8507, Japan
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185
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Liu IKM, Turner JW, Van Leeuwen EMG, Flanagan DR, Hedrick JL, Murata K, Lane VM, Morales-Levy MP. Persistence of anti-zonae pellucidae antibodies following a single inoculation of porcine zonae pellucidae in the domestic equine. Reproduction 2005; 129:181-90. [PMID: 15695612 DOI: 10.1530/rep.1.00168] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [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: 11/08/2022]
Abstract
In this study of equids, we investigated the antibody response and the effect on the estrous cycle following a single inoculation of porcine zonae pellucidae (pZP) employing controlled-release methodology. We also investigated the use of two different water-soluble adjuvants as an alternative to oil-based adjuvants. Twenty-seven domestic mares were inoculated with various formulations of pZP and adjuvant. We showed that the anti-pZP antibodies generated as a result of the inoculations persisted for at least 43 weeks (length of the study). Of the various formulations used in the study, pZP and QS-21 water-soluble adjuvant, administered in combination with an emulsified preparation of pZP and Freund’s Complete Adjuvant generated a significantly (P < 0.05) higher titer of anti-pZP antibodies when compared with other formulations employing the water-soluble adjuvant, Carbopol. Hormone analyses for cyclicity indicated a high incidence and extended duration of persistent corpora lutea among the treated mares. The positive control group of mares receiving two standard inoculations of pZP and Freund’s Complete and Incomplete Adjuvants, as well as the placebo group of mares injected with QS-21 only, also exhibited high incidences of persistent corpora lutea. However, all mares eventually returned to normal cyclicity. The basis for the high incidence and extended duration of persistent corpora lutea was unexplained. The results demonstrate for the first time the persistent generation of anti-pZP antibodies following a single inoculation of pZP incorporated into a controlled-released preparation in the horse. This study further suggests that a single inoculation of pZP sequestered in a controlled-release lactide-glycolide polymer may serve as an alternative to traditional two-inoculation protocols for contraception investigations in the equine.
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Affiliation(s)
- I K M Liu
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, California 95616, USA.
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186
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Takeyama H, Itani T, Tachi N, Sakamura O, Murata K, Inoue T, Takanishi T, Suzumura H, Niwa S. Effects of shift schedules on fatigue and physiological functions among firefighters during night duty. Ergonomics 2005; 48:1-11. [PMID: 15764302 DOI: 10.1080/00140130412331303920] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
To examine the effects of shift schedules on fatigue and physiological functions among firefighters a 17-day field study at a fire station was carried out. Eleven firefighters, who were engaged in firefighting emergency services, participated in this study. At the fire station, night duty (22:00-07:00) was divided into 5 periods (P1: 22:00-00:00; P2: 23:45-01:45; P3: 01:30-03:30; P4: 03:15-05:15; P5: 05:00-07:00). The participants were assigned to one of these 5 periods and awakened to answer calls from the city's central information centre. They took naps in individual rooms during night duty, except when on night shift or when called out on an emergency. Subjective complaints of fatigue, critical flicker fusion frequencies, 3-choice reaction times, and oral temperature were measured before and after work and following breaks during their 24 working hours. Heart rate variability was also recorded to evaluate autonomic nerve activity. The results show that during P3 and P4, participants who had to wake up at midnight took shorter naps. The rates of subjective complaints regarding P3 and P4 tended to be higher than those for P1, P2, and P5. The ratios of the low frequency component of heart rate variability to the high frequency component during P4 were significantly lower than those during P5. It is assumed that such an irregular sleeping pattern causes many complaints of subjective fatigue, and adversely affects physiological functions. A night-duty shift schedule ensuring undisturbed naps should be considered.
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Affiliation(s)
- H Takeyama
- Health Science of Work, Life and Environment, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
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187
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Hasegawa H, Yamada Y, Harasawa H, Tsuji T, Murata K, Sugahara K, Tsuruda K, Ikeda S, Imaizumi Y, Tomonaga M, Masuda M, Takasu N, Kamihira S. Sensitivity of adult T-cell leukaemia lymphoma cells to tumour necrosis factor-related apoptosis-inducing ligand. Br J Haematol 2005; 128:253-65. [PMID: 15638862 DOI: 10.1111/j.1365-2141.2004.05289.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [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: 11/28/2022]
Abstract
Tumour necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) induces apoptosis in many transformed cells, but not in normal cells, and hence TRAIL has recently emerged as a novel anti-cancer agent. Adult T-cell leukaemia lymphoma (ATLL) is a neoplasm of T-lymphocyte origin aetiologically associated with human T-lymphotropic virus type 1 (HTLV-I), and is resistant to standard anti-cancer therapy. We thus characterized the sensitivity of ATLL cells to TRAIL in this study. Although most primary ATLL cells and cell lines expressed TRAIL death receptors on their surface, they showed only restricted sensitivity to TRAIL. Among the 10 ATLL cell lines examined, one was sensitive, but two had insufficient death-receptor expression, two had an unknown resistant mechanism with abrogation of the death signal upstream of caspase-8, and the remaining five showed attenuation of the signal in both extrinsic and intrinsic pathways by X-linked inhibitor of apoptosis and Bcl-2/Bcl-xL respectively. Furthermore, the level of HTLV-I tax expression was significantly correlated to TRAIL resistance. Interestingly, ATLL cells themselves expressed TRAIL on the cell surface. Constitutive production of TRAIL may offer resistance, thus allowing the development of TRAIL-resistant ATLL cells. Consequently, the resistant mechanism in ATLL cells against TRAIL was assigned to multiple factors and was not explained by a definitive single agent.
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Affiliation(s)
- H Hasegawa
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto, Nagasaki, Japan
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188
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Yamamoto N, Shiraki K, Yamanaka Y, Sugimoto K, Murata K, Nakano T. Images of interest. Hepatobiliary and pancreatic: cholangiocarcinoma with chylous ascites. J Gastroenterol Hepatol 2004; 19:1417. [PMID: 15610317 DOI: 10.1111/j.1440-1746.2004.03730.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- N Yamamoto
- First Department of Internal Medicine, Mie University School of Medicine, Tsu, Mie 514-8507, Japan
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189
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Itou T, Kanoda K, Murata K, Matsumoto T, Hiraki K, Takahashi T. Collapse of charge order in a quasi-one-dimensional organic conductor with a quarter-filled band. Phys Rev Lett 2004; 93:216408. [PMID: 15601043 DOI: 10.1103/physrevlett.93.216408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2003] [Indexed: 05/24/2023]
Abstract
A charge-ordered insulator, (DI-DCNQI)2Ag, with a quasi-one-dimensional quarter-filled band is metallized by pressure. It was found that the charge order melts into a curious metallic state with cubic-temperature dependence of the resistivity, which implies the unprecedented mechanism of the electron-electron scattering. We constructed the pressure-temperature phase diagram, where the melting line has a tricritical point dividing the second-order line at low pressures and the first-order line at high pressures just before it vanishes.
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Affiliation(s)
- T Itou
- Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
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190
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Murata K, Mizuta K, Imazu K, Terasawa F, Taki M, Endoh T. The prevalence of Toxoplasma gondii antibodies in wild and captive cetaceans from Japan. J Parasitol 2004; 90:896-8. [PMID: 15357097 DOI: 10.1645/ge-197r] [Citation(s) in RCA: 13] [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: 11/10/2022] Open
Abstract
The seroprevalence of Toxoplasma gondii was investigated in wild and captive cetaceans from Japan. Antibodies against T. gondii were examined by both latex agglutination test (LAT) and indirect hemagglutination test (IHAT) for 77 serum or plasma samples obtained from 59 individuals of 6 species, including 2 hybrids. Antibody titers greater than 1:64 in LAT and greater than 1:640 in IHAT, indicative of the presence of T. gondii, were found in 11.9% of 59 individuals. In 7 samples that showed a positive reaction by IHAT, T. gondii titers were examined for each immunoglobulin (Ig) fraction separated by sucrose gradient centrifugation. The antibody peaks in each fraction were divided into 3 types, thought to be a reaction of IgM (type 1), IgG (type 2), and IgM with IgG (type 3). Type 1 was found in serum from a bottle-nosed dolphin (Tursiops truncatus) and a killer whale (Orcinus orca) sampled soon after capture off the Japanese coast in 1988; it was concluded that infection in the wild had occurred less than 15 yr before the study was performed. The prevalence of putative IgM and IgG antibodies from a captive-bred T. truncatus suggested that T. gondii infection also occurred in the aquarium.
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Affiliation(s)
- K Murata
- Department of Wildlife Science, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan.
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191
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Suzuki S, Furui S, Kohtake H, Sakamoto T, Yamasaki M, Furukawa A, Murata K, Takei R. Isolated dissection of the superior mesenteric artery: CT findings in six cases. ACTA ACUST UNITED AC 2004; 29:153-7. [PMID: 15290937 DOI: 10.1007/s00261-003-0110-2] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [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: 12/30/2022]
Abstract
Dissection of the superior mesenteric artery (SMA) not associated with aortic dissection is rare. The purpose of this study is to describe the computed tomographic (CT) findings of this condition. We studied the CT findings of six patients with isolated dissection of the SMA. CT demonstrated thrombosis of the false lumen or intramural hematoma (n = 4) and/or intimal flap (n = 4) in all six patients. Other CT findings were enlarged diameter of the SMA (n = 5), increased attenuation of the fat around the SMA (n = 5), and hematoma in the mesentery with hemorrhagic ascites (n = 1). CT is useful for the diagnosis of isolated dissection of the SMA, and increased attenuation of the fat around the artery is considered the key to the diagnosis when no definite findings are evident.
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Affiliation(s)
- S Suzuki
- Department of Radiology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.
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192
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Murata K, Satou M, Matsushima K, Satake S, Yamamoto Y. Retrospective Estimation of Genetic Diversity of an Extinct Oriental White Stork (Ciconia boyciana) Population in Japan Using Mounted Specimens and Implications for Reintroduction Programs. CONSERV GENET 2004. [DOI: 10.1023/b:coge.0000041022.71104.1f] [Citation(s) in RCA: 10] [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: 11/12/2022]
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193
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Chiba A, Sakai H, Sato M, Honma R, Murata K, Sugimori F. Pituitary-gonadal axis and secondary sex characters in the spontaneously masculinized pintail, Anas acuta (Anatidae, Aves), with special regard to the gonadotrophs. Gen Comp Endocrinol 2004; 137:50-61. [PMID: 15094335 DOI: 10.1016/j.ygcen.2004.02.015] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2003] [Revised: 02/02/2004] [Accepted: 02/23/2004] [Indexed: 10/26/2022]
Abstract
This paper describes some aspects of the pituitary gland, gonads, and secondary sex characters of unusual pintails, Anas acuta, found in the wild. They were demonstrated to be females with partially masculinized plumage; i.e., their plumage showed various degrees of intersex, but the genital organs, syrinx, and electrophoretic pattern of sex-specific DNA were of the female type. Their left ovary underwent a marked involution and was associated with the mesonephros (the Wolffian body), as was the degenerated right ovary. Neither testicular tissue nor ovotestis was found in the gonad of either side. The oviduct was anatomically normal and comparable to that of the control adult. The plasma concentration of estradiol-17beta (E2) was shown to be 5.7+/-0.5 (mean+/-SE)pg/ml in the masculinized birds, 7.0+/-0.7 pg/ml in control males, and 22.5+/-6.1 pg/ml in control females, whereas plasma testosterone (T) was below the detection level in all of the samples. As to the pituitary gland, hypertrophy and/or deformity of the pars distalis was evident in the majority of the masculinized birds. Among others, hyperactive gonadotrophs, mainly luteinizing hormone (LH)- and LH/follicle-stimulating hormone (FSH)-immunoreactive cells, were prominent in the entire gland; and typical signet ring cells (castration cells) or giant gonadotrophs were frequently observed. These changes in the gonadotrophs may have been caused by a feedback response to the physiologically ovariectomized condition in the masculinized birds. Causal factor(s) of the ovarian degeneration remain to be further investigated.
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Affiliation(s)
- A Chiba
- Department of Biology, Nippon Dental University School of Dentistry at Niigata, Niigata 951-8580, Japan.
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194
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Yokota T, Ishiyama S, Saito T, Teshima S, Narushima Y, Murata K, Iwamoto K, Yashima R, Yamauchi H, Kikuchi S. Lymph node metastasis as a significant prognostic factor in gastric cancer: a multiple logistic regression analysis. Scand J Gastroenterol 2004; 39:380-4. [PMID: 15125471 DOI: 10.1080/00365520310008629] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.1] [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: 02/04/2023]
Abstract
BACKGROUND In Japan, the standard treatment policy for all potentially curable patients with gastric cancer is radical resection including extensive lymphadenectomy. This treatment strategy has been used for both early and advanced gastric cancers, and substantial increases in survival time have been reported. In advanced gastric cancer, lymphatic spread is reported to be one of the most relevant prognostic factors for gastric cancer resected for cure. The purpose of this study was to determine the factors affecting lymph node involvement and to establish guidelines for the extent of lymph node dissection most appropriate for the treatment of gastric cancer. METHODS The clinicopathological features of 926 patients with gastric cancer were reviewed. Information on the clinicopathological features was obtained from the database of gastric cancer at the Department of Gastroenterological Surgery, Sendai National Hospital. Univariate and multivariate analyses of data for patients with gastric cancer tumors were performed to evaluate the prognostic significance of clinicopathological features. The independent risk factors influencing lymph node metastasis were determined by multiple logistic regression analysis. RESULTS The following clinicopathologic factors were found to be correlated with prognosis of gastric cancer: (1) macroscopic type, (2) depth of invasion, (3) cancer-stromal relationship, (4) histological growth pattern, (5) lymph node involvement, (6) lymphatic invasion, (7) vascular invasion and (8) tumor site. However, a multivariate analysis revealed that macroscopic type, depth of invasion, lymph node involvement and tumor site are independent risk factors for the prognosis of gastric cancer patients. Among these factors, the prognosis of patients with gastric cancer was most strongly influenced by lymph node involvement (odds ratio, 4.632). According to a multiple logistic regression model, depth of cancer invasion and lymphatic invasion was significantly correlated with lymph node metastases. CONCLUSIONS Lymph node involvement has the strongest influence on the prognosis of gastric cancer. Among the clinicopathological factors, depth of invasion and microscopically lymphatic invasion are important factors in predicting lymph node metastases. Thus, the ability to perform gastrectomy with dissection of lymph nodes is a basic requirement for gastric cancer surgeons.
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Affiliation(s)
- T Yokota
- Dept. of Gastroenterological Surgery, Sendai National Hospital, Sendai, Japan.
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195
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Shinozaki Y, Shiibashi T, Yoshizawa K, Murata K, Kimura J, Maruyama S, Hayama Y, Yoshida H, Nogami S. Ectoparasites of the Pallas squirrel, Callosciurus erythraeus, introduced to Japan. Med Vet Entomol 2004; 18:61-63. [PMID: 15009447 DOI: 10.1111/j.0269-283x.2004.0475.x] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The squirrel Callosciurus erythraeus (Pallas) (Rodentia: Sciuridae) was intentionally introduced to Japan in 1935 and has become established throughout much of the country. Although they live mainly in forests, Pallas squirrels come into gardens and are frequently fed by people or kept as pets, so their ectoparasites could be of potential medical as well as veterinary importance. During 2001-2003 we conducted the first ectoparasite survey of Pallas squirrels in Japan. From 105 C. erythraeus captured in Kamakura District of Kanagawa Prefecture on Honshu Island, three types of ectoparasite were found: 52 specimens of the sucking louse Neohaematopinus callosciuri Johnson (Anoplura: Haematopinidae), 26 fleas Ceratophyllus (Monopsyllus) anisus Rothschild (Siphonaptera: Ceratophyllidae) and four nymphs of the tick Haemaphysalis flava Neumann (Acari: Ixodidae) on 22, 13 and one squirrels, respectively. Evidently in Japan C. erythraeus carries relatively few ectoparasite species; this may be a contributory factor to their invasive success. Further investigations are needed to assess risks of zoonotic transmission of plague or murine typhus by C. anisus, of louse-borne typhus by N. callosciuri and of tularaemia and especially Japanese spotted fever (Rickettsia japonica) by H. flava.
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Affiliation(s)
- Y Shinozaki
- College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa, Japan
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196
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Taoka T, Iwasaki S, Nakagawa H, Fukusumi A, Hirohashi S, Sakamoto M, Kichikawa K, Murata K. Distinguishing between anterior cerebral artery and middle cerebral artery perfusion by color-coded perfusion direction mapping with arterial spin labeling. AJNR Am J Neuroradiol 2004; 25:248-51. [PMID: 14970025 PMCID: PMC7974626] [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: 04/28/2023]
Abstract
The purpose of this study was to evaluate collateral circulation by describing anterior cerebral artery and middle cerebral artery perfusion areas. Pairs of image sets spin labeled on the medial and lateral side were used. A pixel-by-pixel t test was performed, with blue gradation used to display lateral perfusion (ie, middle cerebral artery) and orange gradation for anterior cerebral artery perfusion. Extensions of anterior cerebral artery perfusion areas in cases of middle cerebral artery stenosis were described. This method may aid in estimation of collateral circulation for stroke treatment.
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Affiliation(s)
- Toshiaki Taoka
- Department of Radiology, Nara Medical University, Nara, Japan
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197
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Nonomura KI, Nakano M, Murata K, Miyoshi K, Eiguchi M, Miyao A, Hirochika H, Kurata N. An insertional mutation in the rice PAIR2 gene, the ortholog of Arabidopsis ASY1, results in a defect in homologous chromosome pairing during meiosis. Mol Genet Genomics 2004; 271:121-9. [PMID: 14758540 DOI: 10.1007/s00438-003-0934-z] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2003] [Accepted: 09/16/2003] [Indexed: 11/26/2022]
Abstract
To elucidate the genetic system that establishes homologous chromosome pairing in monocot plants, we have isolated an asynaptic mutant of rice, designated pair2 (homologous pairing aberration in rice meiosis 2), in which 24 completely unpaired univalents are observed at pachytene and diakinesis. The mutation was caused by an insertion of the retrotransposon Tos17, as demonstrated by complementation of the mutation by transformation with the corresponding wild-type gene. The gene in which the element was inserted is orthologous to the ASY1 gene of Arabidopsis thaliana and the HOP1 gene of Saccharomyces cerevisiae. Mature PAIR2 mRNA and several splicing variants were found to be highly expressed in wild-type reproductive tissues, and lower expression was also detected in vegetative tissues. In situ hybridization and BrdU incorporation experiments revealed that PAIR2 expression is specifically enhanced in male and female meiocytes, but not in those at pre-meiotic S phase or in the pollen maturation stages. The results obtained in this study suggest that the PAIR2 gene is essential for homologous chromosome pairing in meiosis, as in the case of the genes ASY1 and HOP1. The study also suggested the possibility that a highly homologous copy of the PAIR2 gene located on a different chromosome is in fact a pseudogene.
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Affiliation(s)
- K-I Nonomura
- Experimental Farm and Plant Genetics Laboratory, National Institute of Genetics, Yata 1111, 411-8540 Mishima, Shizuoka, Japan.
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198
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Affiliation(s)
- T Yanai
- Department of Veterinary Pathology, Faculty of Agriculture, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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199
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Sekikawa A, Horiuchi BY, Edmundowicz D, Ueshima H, Curb JD, Sutton-Tyrrell K, Okamura T, Kadowaki T, Kashiwagi A, Mitsunami K, Murata K, Nakamura Y, Rodriguez BL, Kuller LH. A "natural experiment" in cardiovascular epidemiology in the early 21st century. Heart 2003; 89:255-7. [PMID: 12591821 PMCID: PMC1767570 DOI: 10.1136/heart.89.3.255] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Despite similar traditional risk factors, morbidity and mortality rates from coronary heart disease in western and non-western cohorts remain substantially different. Careful study of such cohorts may help identify novel risk factors for CHD, and contribute to the formulation of new preventive strategies
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Affiliation(s)
- A Sekikawa
- University of Pittsburgh, Pittsburgh, USA.
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200
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Abstract
To determine whether eosinophils play a critical role in muscle fiber damage in patients with eosinophilic myositis (EM). We investigated expression of eosinophilic major basic protein (MBP) and interleukin (IL)-5 at the protein and mRNA levels in muscle biopsies from three patients with idiopathic EM. MBP deposits were found on the surface of eosinophils and muscle fibers surrounded by the eosinophils. Reverse transcriptase-polymerase chain reaction analysis showed increased IL-5 expression in EM muscle but not in control muscle. These results suggest that IL-5 induces local accumulation of eosinophils and their release of MBP. The secreted proteins adhere to the muscle fiber membrane, resulting in muscle damage.
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Affiliation(s)
- K Murata
- Department of Neurology, Nara Medical University, Nara, Japan.
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