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Saito-Kokubu Y, Yasuda K, Magara M, Miyamoto Y, Sakurai S, Usuda S, Yamazaki H, Yoshikawa S. Geographical distribution of plutonium derived from the atomic bomb in the eastern area of Nagasaki. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0733-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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102
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Yoshida T, Sano T, Kanuma T, Owada N, Sakurai S, Fukuda T, Nakajima T. Quantitative real-time polymerase chain reaction analysis of the type distribution, viral load, and physical status of human papillomavirus in liquid-based cytology samples from cervical lesions. Int J Gynecol Cancer 2007; 18:121-7. [PMID: 17506843 DOI: 10.1111/j.1525-1438.2007.00979.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Human papillomavirus (HPV) 16 DNA can be integrated into the DNA of cells, thereby disrupting E2 gene expression, which leads to increased expression of the E6 and E7 viral oncogenes and progression to cancer. However, the relationships among HPV viral load, cytologic diagnosis, and HPV integration status remain unclear. The aim of this study was to evaluate the HPV type distribution, viral load, and HPV 16 integration status, and then investigate their relationships with precancerous and cancerous lesions among Japanese women of different age groups. Liquid-based cytology (LBC) samples were examined by quantitative real-time polymerase chain reaction (PCR). The overall mean prevalences of HPV were higher in younger women and lower in middle-aged women among the age groups. The positivity rate of HPV 16 peaked at a younger age than that of all HPV subtypes. The HPV 16 viral load per cell decreased from a low-grade squamous intraepithelial lesion (LSIL) to a cancerous lesion (257.4 for LSIL, 76.9 for high-grade squamous intraepithelial lesions, and 35.7 for cancerous lesions). The average HPV 16 DNA copy numbers for three different HPV 16 integration statuses were 64.1 for the episomal form, 465.5 for the mixed form, and 0.4 for the integrated form. Furthermore, the mean age of patients with the pure integrated form of HPV 16 was more than 10 years older than those of patients with the episomal and mixed forms. Quantitative real-time PCR appears to be a useful method for quantitative and physical status analyses of HPV in cervical cancer screening with LBC samples.
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Chai JY, Miyamoto Y, Kokubu Y, Magara M, Sakurai S, Usuda S, Oura Y, Ebihara M. An attempt for determining 235U/238U ratio for a trace amount of uranium: Search for an extinct radionuclide 247Cm in the early solar system. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0535-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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104
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Saito-Kokubu Y, Esaka F, Yasuda K, Magara M, Miyamoto Y, Sakurai S, Usuda S, Yamazaki H, Yoshikawa S, Nagaoka S. Plutonium isotopes derived from Nagasaki atomic bomb in the sediment of Nishiyama reservoir at Nagasaki, Japan. Appl Radiat Isot 2007; 65:465-8. [DOI: 10.1016/j.apradiso.2006.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2006] [Revised: 07/11/2006] [Accepted: 10/24/2006] [Indexed: 10/23/2022]
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105
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Esaka F, Esaka K, Lee C, Magara M, Sakurai S, Usuda S, Watanabe K. Particle isolation for analysis of uranium minor isotopes in individual particles by secondary ion mass spectrometry. Talanta 2007; 71:1011-5. [DOI: 10.1016/j.talanta.2006.05.091] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2006] [Revised: 05/09/2006] [Accepted: 05/09/2006] [Indexed: 10/24/2022]
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106
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Miyamoto Y, Saito Y, Magara M, Sakurai S, Usuda S. Effect of change of environmental conditions on the elemental composition of airborne dust. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0110-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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107
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Tanigawa T, Yamagishi K, Sakurai S, Muraki I, Noda H, Shimamoto T, Iso H. Arterial oxygen desaturation during sleep and atrial fibrillation. Heart 2006; 92:1854-5. [PMID: 17105888 PMCID: PMC1861267 DOI: 10.1136/hrt.2005.081257] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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108
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Sakurai S, Kota T, Isobe D, Okamoto S, Sakurai K, Ono T, Imaizumi K, Nomura S. Synchrotron Small‐Angle X‐Ray Scattering Studies on Flow‐Induced Gyroid to Cylinder Transition in an Elastomeric SBS Triblock Copolymer. J MACROMOL SCI B 2006. [DOI: 10.1081/mb-120027747] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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109
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Sekimoto T, Iwami M, Sakurai S. Coordinate responses of transcription factors to ecdysone during programmed cell death in the anterior silk gland of the silkworm, Bombyx mori. INSECT MOLECULAR BIOLOGY 2006; 15:281-92. [PMID: 16756547 DOI: 10.1111/j.1365-2583.2006.00641.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Programmed cell death (PCD) in Bombyx mori anterior silk glands (ASGs) is triggered by 20-hydroxyecdysone (20E). We examined the expression profiles and effects of 20E on 11 transcription factor genes in the fifth instar to determine whether they demonstrate the hierarchical control seen in Drosophila PCD. Results indicate that EcR-A and usp-2, but not EcR-B1 or usp-1, may be components of the ecdysone receptor complex. Up-regulation of E75A, BHR3, and three BR-C isoforms, but not E75B, appeared to be associated with the induction of PCD. betaFTZ-F1 was not expressed during PCD execution. Thus, gene control in B. mori ASGs differs from that in Drosophila salivary glands, despite both tissues undergoing PCD in response to 20E at pupal metamorphosis.
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110
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Sato M, Sakurai S, Nishio S, Tobita K, Inoue T, Nakamura Y, Shinya K, Fujieda H. Concept of core and divertor plasma for fusion DEMO plant at JAERI. FUSION ENGINEERING AND DESIGN 2006. [DOI: 10.1016/j.fusengdes.2005.09.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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111
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Tsuchiya K, Akiba M, Azechi H, Fujii T, Fujita T, Fujiwara M, Hamamatsu K, Hashizume H, Hayashi N, Horiike H, Hosogane N, Ichimura M, Ida K, Ikeda Y, Imai T, Inoue N, Ishida S, Itoh S, Kamada Y, Kawashima H, Kikuchi M, Kimura A, Kizu K, Kubo H, Kudo Y, Kurihara K, Kurita G, Kuriyama M, Masaki K, Matsukawa M, Matsuoka M, Miura Y, Miura Y, Miya N, Morioka A, Nakamura K, Ninomiya H, Nishimura A, Okano K, Okuno K, Sagara A, Sakamoto M, Sakurai S, Sato K, Shimada R, Shimizu A, Suzuki T, Takahashi H, Takase Y, Takechi M, Tamai H, Tanaka S, Tsutsui H, Uesugi Y, Yatsu K, Yoshida N. Engineering design and control scenario for steady-state high-beta operation in National Centralized Tokamak. FUSION ENGINEERING AND DESIGN 2006. [DOI: 10.1016/j.fusengdes.2005.08.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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112
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Tobita K, Nishio S, Enoeda M, Sato M, Isono T, Sakurai S, Nakamura H, Sato S, Suzuki S, Ando M, Ezato K, Hayashi T, Hayashi T, Hirose T, Inoue T, Kawamura Y, Koizumi N, Kudo Y, Kurihara R, Kuroda T, Matsukawa M, Mouri K, Nakamura Y, Nishi M, Nomoto Y, Ohmori J, Oyama N, Sakamoto K, Suzuki T, Takechi M, Tanigawa H, Tsuchiya K, Tsuru D. Design study of fusion DEMO plant at JAERI. FUSION ENGINEERING AND DESIGN 2006. [DOI: 10.1016/j.fusengdes.2005.08.058] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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113
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Kawashima H, Sakurai S, Shimizu K, Takizuka T, Tamai H, Matsukawa M, Fujita T, Miura Y. Divertor modeling for the design of the National Centralized Tokamak with high beta steady-state plasmas. FUSION ENGINEERING AND DESIGN 2006. [DOI: 10.1016/j.fusengdes.2005.07.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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114
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Iguchi K, Esaka K, Lee C, Inagawa J, Esaka F, Onodera T, Fukuyama H, Suzuki D, Sakurai S, Watanabe K, Usuda S. Study on the etching conditions of polycarbonate detectors for particle analysis of safeguards environmental samples. RADIAT MEAS 2005. [DOI: 10.1016/j.radmeas.2004.12.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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115
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116
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Terashima J, Takaki K, Sakurai S, Bownes M. Nutritional status affects 20-hydroxyecdysone concentration and progression of oogenesis in Drosophila melanogaster. J Endocrinol 2005; 187:69-79. [PMID: 16214942 DOI: 10.1677/joe.1.06220] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Drosophila egg production depends upon the nutritional available to females. When food is in short supply, oogenesis is arrested and apoptosis of the nurse cells is induced at mid-oogenesis via a mechanism that is probably controlled by ecdysteroid hormone. We have shown that expression of some ecdysone-response genes is correlated with apoptosis of egg chambers. Moreover, ecdysteroid injection and application of juvenile hormone induces and suppresses the apoptosis, respectively. In this study, we investigated which tissues show increases in the concentration of ecdysteroids under nutritional shortage to begin to link together nutrient intake, hormone regulation and the choice between egg development or apoptosis made within egg chambers. We measured ecdysteroid levels in the whole body, ovaries and haemolymph samples by RIA and found that the concentration of ecdysteroid increased in all samples. This contributes to the idea that nutritional shortage leads to a rapid high ecdysteroid concentration within the fly and that the high concentration induces apoptosis. Low concentrations of ecdysteroid are essential for normal oogenesis. We suggest there is threshold concentration in the egg chambers and that apoptosis at mid-oogenesis is induced when the ecdysteroid levels exceed the threshold. Starvation causes the ovary to retain the ecdysteroid it produces, thus enabling individual egg chambers to undergo apoptosis and thus control the number of eggs produced in relation to food intake.
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Shibata T, Fujimatsu T, Suzuki H, Kitanaka Y, Osawa H, Odagiri N, Tauchi K, Koike H, Aruga M, Sakurai S, Yorita K, Kumazaki S. [Off-pump coronary artery bypass for old myocardial infarction associated with jejunotomy for obstructive ileus due to gall bladder stone; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2005; 58:921-4. [PMID: 16167822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In non-cardiac operative cases with inflammatory digestive organ disease, bacterial translocation (BT) often results from non-enteral nutrition postoperatively. If coronary artery bypass grafting (CABG) is performed in the case having old myocardial infarction (OMI) and inflammatory digestive organ disease at first before non-cardiac operation, he seems vulnerable to have severe complications such as multiple organ failure due to systemic inflammatory response syndrome (SIRS) and preexisting BT postoperatively. We performed a off-pump CABG (OPCAB) for OMI associated with jejunotomy for obstructive ileus due to gall bladder stone. No complication was found in the postoperative course. We conclude that combined operation, non-cardiac surgery after OPCAB is worth considering in those cases. And we think OPCAB is better than conventional CABG in such cases, because cardiopulmonary bypass is known to ponder comparable damages to immune system, coagulation system and others.
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118
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Sasaki S, Aki T, Sakurai S, Shimizu N, Ohkubo K, Yamawaki K, Hanashima T, Toyoda T, Mori T. Magnetic structure of BaFe 12O 19determined by resonant X-ray magnetic scattering. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305093232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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119
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Ohta N, Sakurai S, Yoshitake H, Aoyagi M. Analysis of Th1, Th2, Tc1 and Tc2 cells in patients with allergic rhinitis. ACTA ACUST UNITED AC 2005. [DOI: 10.1111/j.1365-2222.2005.0088.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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120
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Shimizu Y, Katase K, Shimizu K, Sakurai S, Umezawa S, Kobayashi Y. Combination of consecutive low-dose cisplatin with ifosfamide and epirubicin (CLD-IEP) in sarcoma uteri. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.9066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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121
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Mutoh H, Sakurai S, Satoh K, Osawa H, Tomiyama T, Kita H, Yoshida T, Tamada K, Yamamoto H, Isoda N, Ido K, Sugano K. Pericryptal fibroblast sheath in intestinal metaplasia and gastric carcinoma. Gut 2005; 54:33-9. [PMID: 15591501 PMCID: PMC1774373 DOI: 10.1136/gut.2004.042770] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Revised: 05/27/2004] [Accepted: 06/03/2004] [Indexed: 12/08/2022]
Abstract
BACKGROUND AND AIMS In the progression of chronic gastritis, gastric mucosal cells deviate from the normal pathway of gastric differentiation to an intestinal phenotype which is closely related to gastric carcinoma. However, to date, it has not been elucidated whether the intestinal metaplasia is merely a change in the epithelium or whether the underlying mesenchyme also changes from gastric type to intestinal type. We have investigated the relationship between intestinal metaplasia and the pericryptal fibroblast sheath (PCFS) in the mesenchyme. In addition, we also examined PCFS in gastric carcinoma. METHODS We determined the existence of PCFS in the intestinal metaplastic mucosa and carcinoma of both human and Cdx2 transgenic mouse stomach. PCFS was determined using the antibody against alpha-smooth muscle actin and electron microscopic observations. RESULTS PCFS formed an almost complete layer around the small and large intestinal crypts while it did not exist around the normal gastric glands in both mice and humans. PCFS was seen around the glands of intestinal metaplastic mucosa in both Cdx2 transgenic mouse and human stomachs. However, PCFS was virtually absent in the intestinal-type gastric adenocarcinoma area. CONCLUSION We successfully demonstrated that the epithelium as well as the mesenchyme changed from the gastric type to the intestinal type in intestinal metaplasia and that PCFS disappeared in intestinal-type gastric carcinoma.
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122
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Mutoh H, Sakurai S, Satoh K, Osawa H, Hakamata Y, Takeuchi T, Sugano K. Cdx1 induced intestinal metaplasia in the transgenic mouse stomach: comparative study with Cdx2 transgenic mice. Gut 2004; 53:1416-23. [PMID: 15361487 PMCID: PMC1774241 DOI: 10.1136/gut.2003.032482] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS Gastric intestinal metaplasia, which is mainly induced by Helicobacter pylori infection, is thought to be a precancerous lesion of gastric adenocarcinoma. Intestinal metaplastic mucosa expresses intestine specific homeobox genes, Cdx1 and Cdx2, in the human gastric mucosa. We and others have reported that ectopic expression of Cdx2 in the gastric epithelium generates intestinal metaplasia in the transgenic mouse model. METHODS To clarify the differences in the roles of Cdx1 and Cdx2 in intestinal metaplasia, we generated transgenic mice expressing Cdx1 in the gastric mucosa and compared Cdx1 induced gastric mucosal morphological changes with Cdx2 induced intestinal metaplasia. RESULTS The gastric mucosa in Cdx1 transgenic mice was completely replaced by intestinal metaplastic mucosa, consisting of all four intestinal epithelial cell types: absorptive enterocytes, goblet, enteroendocrine, and Paneth cells. Paneth cells, which were not recognised in Cdx2 transgenic mice, were in the upper portion of the intestinal metaplastic mucosa. Pseudopyloric gland metaplasia, which was induced in Cdx2 transgenic mice, was not recognised in Cdx1 transgenic mice. Proliferating cell nuclear antigen (PCNA) positive cells were diffusely scattered in Cdx1 induced intestinal metaplastic mucosa while PCNA positive cells in Cdx2 induced intestinal metaplastic mucosa were in the base of the metaplastic mucosa. Intestinal metaplastic mucosa of Cdx1 transgenic mouse stomach was significantly thicker than that of wild-type or Cdx2 transgenic mouse stomach. CONCLUSIONS We have confirmed that Cdx1 induced gastric intestinal metaplasia but that it differed from Cdx2 induced intestinal metaplasia in differentiation, structure, and proliferation.
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Shimizu Y, Katase K, Kobayashi Y, Shimizu K, Umezawa S, Utsugi K, Kato T, Hasumi K, Sakurai S. Significance of systematic pelvic and para-aortic lymphadenectomy in epithelial ovarian carcinoma (EOC). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.5009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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124
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Kojima H, Sakurai S, Uemura M, Satoh H, Nakashima T, Minamino N, Kangawa K, Matsuo H, Fukui H. Adrenomedullin contributes to vascular hyporeactivity in cirrhotic rats with ascites via a release of nitric oxide. Scand J Gastroenterol 2004; 39:686-93. [PMID: 15370692 DOI: 10.1080/00365520410005306] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Plasma levels of adrenomedullin, a potent vasodilator peptide, are increased in cirrhotic patients, whereas its role in vascular hyporeactivity in cirrhosis has not been clarified. METHODS Adrenomedullin expression was evaluated by radioimmunoassay and reverse-transcription polymerase chain reaction. Vascular reactivity to phenylephrine, alpha-adrenoceptor agonist, was investigated in the aortic rings from control rats and CCl-induced cirrhotic rats with ascites in the presence of the neutralizing antibody against adrenomedullin, human adrenomedullin and/or N-nitro-L-arginine methyl ester, a nitric oxide synthase inhibitor. RESULTS Plasma adrenomedullin levels were significantly higher in cirrhotic rats than in controls (16.3 +/- 2.9 versus 7.4 +/- 1.7 fmol/mL, P < 0.05) and correlated negatively with systemic arterial pressure (r = -0.62, P < 0.05). Gene expression of adrenomedullin in various organs (liver, kidney, lung) and vessels (portal vein, aorta) was enhanced in cirrhotic rats compared with controls. Neutralizing antibody against adrenomedullin ameliorated the blunted contractile response to phenylephrine in cirrhotic aorta (Rmax: 1.5 +/- 0.1 versus 1.0 +/- 0.1 g/mg tissue, P < 0.05), whereas contraction remained unchanged in control aorta (Rmax: 1.9 +/- 0.2 versus 1.9 +/- 0.2 g/mg tissue). Intravenous infusion of human adrenomedullin induced a reduction of mean arterial pressure together with an increase of serum nitrate levels, which was abolished by neutralizing antibody against adrenomedullin. Human adrenomedullin caused a blunted contractile response to phenylephrine in both control and cirrhotic aortas, which was not observed in the presence of N-nitro-L-arginine methyl ester. CONCLUSIONS These findings indicate that the overproduction of adrenomedullin may contribute to vascular hyporeactivity in cirrhosis via a release of nitric oxide.
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Matsukawa M, Ishida S, Sakasai A, Urata K, Senda I, Kurita G, Tamai H, Sakurai S, Miura Y, Masaki K, Shimada K, Terakado T. Design and analysis of plasma position and shape control in superconducting tokamak JT-60SC. FUSION ENGINEERING AND DESIGN 2003. [DOI: 10.1016/s0920-3796(03)00278-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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