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Yokoyama Y, Satoh H, Kurata A, Otani T, Fujieda H, Abe Y, Abe M. [Surgical removal of native aortic valve thrombosis associated with acute myocardial infarction and protein C deficiency; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2009; 62:238-240. [PMID: 19280958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Native aortic valve thrombosis is an uncommon event. We describe the case of a 76-year-old man who suffered acute myocardial infarction associated with native aortic valve thrombosis diagnosed by cardiac catheterization. Since the thrombus was localized on the right coronary cusp and occluded right coronary artery, rescue revascularization was performed using perfusion catheter, which was continuously engaged to the right coronary artery. Operation was immediately performed under cardiopulmonary bypass. After incision of ascending aorta, thrombus was removed easily and aortic valve was preserved without degenerative change. Histological study showed a typical thrombus without any specific findings. He had a good clinical course and discharged 9 days after the operation. He had no history of heart valve disease, left heart catheterization or bacterial endocarditis. Since laboratory data showed 41% in protein C antigen and 32% of protein C activity, he was diagnosed of protein C deficiency. Our report emphasize that this thrombus formation may be caused by protein C deficiency.
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Imai S, Yoshida Y, Okamura T, Nagano K, Abe Y, Yoshikawa T, Kamada H, Nakagawa S, Tsunoda S, Tsutsumi Y. The specific effect of 2-methoxyestradiol on lymphatic vascular endothelial cells. DIE PHARMAZIE 2009; 64:214-216. [PMID: 19348346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Lymphatic metastasis of tumors is one of the most important prognostic factors and provides valuable information for decisions on appropriate surgical protocols. Recent studies have demonstrated that lymphangiogenesis of lymphatic vascular endothelial cells into tumors is a key event in lymphatic metastasis. Therefore, control of lymphangiogenesis is a promising strategy for treatment or prevention of tumor metastasis and lymphatic disorders. However, mechanisms of lymphangiogenesis or its specific inhibition are not well-understood. In this study we examined effects of various types of signaling inhibitors on tube formation in human lymphatic microvascular endothelial cells (LECs) and blood microvascular endothelial cells (BECs) in vitro. We found that tube formation of LECs was specifically inhibited by 2-methoxyestradiol (2ME). This observation is of potential benefit in understanding the molecular mechanism of lymphangiogenesis. Furthermore, 2ME could therefore offer specific protection against lymphatic metastasis and lymphangiogenesis-related diseases.
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Kobayashi S, Sato R, Abe Y, Inanami O, Yasui H, Omoe K, Yasuda J, Hankanga C, Oda S, Sasaki J. Canine neutrophil dysfunction caused by downregulation of beta2-integrin expression without mutation. Vet Immunol Immunopathol 2009; 130:187-96. [PMID: 19297030 DOI: 10.1016/j.vetimm.2009.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2008] [Revised: 01/16/2009] [Accepted: 02/06/2009] [Indexed: 11/18/2022]
Abstract
Canine leukocyte adhesion deficiency (CLAD) in Irish setters is caused by genetic defects of leukocyte integrin CD18 leading to recurrent bacterial infections. We report clinical features and analysis of neutrophil function from two mixed-breed canine littermates (one female and one male dog) similar to CLAD. The symptoms of pyogenic infection were first recognized at 3 months of age and since then the patients suffered from recurrent bacterial infections. These clinical findings were strongly suggestive of genetic phagocyte dysfunction. Neutrophil function tests revealed a marked reduction of serum-opsonized zymosan-mediated superoxide production in the two littermates. Neutrophils of the male dog revealed impaired integrin-mediated adherence and phagocytic activity, whereas ability of serum opsonization was normal. There was also a profound decrease of surface expression of CD11b/CD18 and beta2-integrin transcript level, detected by real-time RT-PCR without missense mutations unlike CLAD. Immunoblot analysis indicated that protein expression of cytochrome b(558) component gp91(phox), the cytosolic components p47(phox) and p67(phox) of NADPH oxidase components increased profoundly in the male. Our study suggests that decreased transcriptional levels of beta2-integrin without mutations, lead to downregulation of surface expression, resulting in multiple defects in adhesion-related neutrophil functions and consequently, recurrent bacterial infections from puppyhood.
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Abe Y, Inamori M, Uchiyama T, Iida H, Akimoto K, Mawatari H, Nozaki Y, Hosono K, Endo H, Akiyama T, Yoneda K, Fujita K, Yoneda M, Takahashi H, Goto A, Kobayashi N, Kirikoshi H, Kubota K, Saito S, Nakajima A. Education and imaging. Gastrointestinal: Aneurysmal artery in a gastric ulcer after endoscopic hemostasis. J Gastroenterol Hepatol 2009; 24:323. [PMID: 19215338 DOI: 10.1111/j.1440-1746.2008.05765.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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205
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Abe Y, Aravena R, Zopfi J, Shouakar-Stash O, Cox E, Roberts JD, Hunkeler D. Carbon and chlorine isotope fractionation during aerobic oxidation and reductive dechlorination of vinyl chloride and cis-1,2-dichloroethene. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2009; 43:101-107. [PMID: 19209591 DOI: 10.1021/es801759k] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The study investigated carbon and chlorine isotope fractionation during aerobic oxidation and reductive dechlorination of vinyl chloride (VC) and cis-1,2-dichloroethene (cDCE). The experimental data followed a Rayleigh trend. For aerobic oxidation, the average carbon isotope enrichment factors were -7.2 per thousand and -8.5% for VC and cDCE, respectively, while average chlorine isotope enrichment factors were only -0.3 per thousand for both compounds. These values are consistent with an initial transformation by epoxidation for which a significant primary carbon isotope effect and only a small secondary chlorine isotope effect is expected. For reductive dechlorination, larger carbon isotope enrichment factors of -25.2 per thousand for VC and -18.5 per thousand for cDCE were observed consistent with previous studies. Although the average chlorine isotope enrichmentfactors were larger than those of aerobic oxidation (-1.8 per thousand for VC, -1.5 per thousand for cDCE), they were not as large as typically expected for a primary chlorine isotope effect suggesting that no cleavage of C-Cl bonds takes place during the initial rate-limiting step. The ratio of isotope enrichment factors for chlorine and carbon were substantially different for the two reaction mechanisms suggesting that the reaction mechanisms can be differentiated at the field scale using a dual isotope approach.
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Ochiai K, Sato S, Wada M, Iida H, Takakura K, Kutsukake C, Tanaka S, Abe Y, Konno C. D-T neutron streaming experiment simulating narrow gaps in ITER equatorial port. FUSION ENGINEERING AND DESIGN 2008. [DOI: 10.1016/j.fusengdes.2008.06.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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207
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Takagi H, Numazaki M, Kajiwara T, Abe Y, Ishii M, Kato C, Kojima N. Cooperation of specific ICAM-3 grabbing nonintegrin-related 1 (SIGNR1) and complement receptor type 3 (CR3) in the uptake of oligomannose-coated liposomes by macrophages. Glycobiology 2008; 19:258-66. [DOI: 10.1093/glycob/cwn128] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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208
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Nishigaki M, Kobayashi K, Abe Y, Seki N, Yokomura T, Yokoyama M, Kazuma K. Preventive behaviour in adult offspring of Type 2 diabetic patients and its relationship to parental advice. Diabet Med 2008; 25:1343-8. [PMID: 19046226 DOI: 10.1111/j.1464-5491.2008.02582.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS This study was conducted to investigate preventive behaviour of offspring at risk of Type 2 diabetes, particularly focusing on the relationship between patients' behaviour of giving advice as parents. METHODS This cross-sectional study was based on a self-reported questionnaire survey and was conducted at the diabetes clinic of one general hospital. Subjects were 164 pairs, comprising Type 2 diabetic patients ranging in age from 50 to 75 years and non-diabetic offspring ranging in age from 20 to 50 years. RESULTS Approximately half of patients' offspring were engaged in preventive behaviour; 51.2% to prevent weight gain and 50.6% to have a healthy diet. The proportion of offspring taking regular exercise was significantly less (40.2%) than those attempting weight control and eating a healthy diet (P = 0.0039, P = 0.0035, respectively). One hundred and six (64.6%) patients advised their offspring to change their lifestyle habits, such as with diet or exercise, for diabetes prevention. However, preventive behaviours in offspring, including preventing weight gain, having a healthy diet and taking regular exercise, were not facilitated by parental advice (P = 0.27, 0.92, 0.61, respectively). The offspring regarded medical professionals or mass media as reliable information sources, but not the family. However, they received information about diabetes most frequently from their family. CONCLUSIONS Although more offspring practised preventive behaviour than expected, they were less likely to exercise than to change their diet or attempt to control their weight. Parental advice did not facilitate offspring preventive behaviour. Further research is needed to discover how to mediate links between parental advice and offspring preventive behaviour.
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209
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Fujita K, Nozaki Y, Wada K, Yoneda M, Endo H, Takahashi H, Iwasaki T, Inamori M, Abe Y, Kobayashi N, Kirikoshi H, Kubota K, Saito S, Nagashima Y, Nakajima A. Effectiveness of antiplatelet drugs against experimental non-alcoholic fatty liver disease. Gut 2008; 57:1583-91. [PMID: 18596193 DOI: 10.1136/gut.2007.144550] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE No effective drugs have been developed to date to prevent or treat non-alcoholic fatty liver disease (NAFLD), although diet modification and exercise to improve obesity have been attempted. Therefore, development of a novel drug/strategy to treat NAFLD is urgently needed. In the present study, a novel concept is proposed for the treatment of NAFLD. METHODS Fisher 344 male rats were given a choline-deficient, l-amino acid-defined (CDAA) diet or a high-fat high-calorie (HF/HC) diet with or without the antiplatelet agents, aspirin, ticlopidine or cilostazol for 16 weeks. Liver steatosis, inflammation and fibrosis, and the possible mechanisms involved were investigated. RESULTS All three antiplatelet drugs, namely aspirin, ticlopidine and cilostazol, significantly attenuated liver steatosis, inflammation and fibrosis in the CDAA diet group. Of the three agents, cilostazol was the most effective, and the drug also suppressed HF/HC diet-induced liver steatosis. Cilostazol appeared to exert its beneficial effect against NAFLD by suppressing mitogen-activated protein kinase activation induced by oxidative stress and platelet-derived growth factor via intercepting signal transduction from Akt to c-Raf. CONCLUSION Antiplatelet agents, especially cilostazol, offer the promise of becoming key agents for the treatment of NAFLD.
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Suzuki A, Yabushita Y, Takahashi H, Inamori M, Nakao S, Suzuki K, Iida H, Endo H, Akiyama T, Ikeda T, Sakamoto Y, Fujita K, Yoneda M, Goto A, Abe Y, Kirikoshi H, Kobayashi N, Kubota K, Saito S, Nakajima A. Education and imaging. Gastrointestinal: ascariasis. J Gastroenterol Hepatol 2008; 23:1770. [PMID: 19120863 DOI: 10.1111/j.1440-1746.2008.05662.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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211
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Imai S, Mukai Y, Takeda T, Abe Y, Nagano K, Kamada H, Nakagawa S, Tsunoda S, Tsutsumi Y. Effect of protein properties on display efficiency using the M13 phage display system. DIE PHARMAZIE 2008; 63:760-764. [PMID: 18972841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The M13 phage display system is a powerful technology for engineering proteins such as functional mutant proteins and peptides. In this system, it is necessary that the protein is displayed on the phage surface. Therefore, its application is often limited when a protein is poorly displayed. In this study, we attempted to understand the relationship between a protein's properties and its display efficiency using the well-known pIII and pVIII type phage display system. The display of positively charged SV40 NLS and HIV-1 Tat peptides on pill was less efficient than that of the neutrally charged RGDS peptide. When different molecular weight proteins (1.5-58 kDa) were displayed on pIII and pVIII, their display efficiencies were directly influenced by their molecular weights. These results indicate the usefulness in predicting a desired protein's compatibility with protein and peptide engineering using the phage display system.
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Yumori A, Okubo H, Takahashi H, Iida H, Mawatari H, Yoneda M, Inamori M, Abe Y, Kobayashi N, Kirikoshi H, Kubota K, Saito S, Nakajima A. Education and imaging. Gastrointestinal: mantle cell lymphoma diagnosed by balloon enteroscopy. J Gastroenterol Hepatol 2008; 23:1623. [PMID: 19120850 DOI: 10.1111/j.1440-1746.2008.05630.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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213
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Kitai Y, Takahashi H, Goto A, Iida H, Mawatari H, Fujita K, Yoneda M, Inamori M, Abe Y, Kobayashi N, Kirikoshi H, Kubota K, Saito S, Nakajima A. Chemotherapeutic treatment of priapism in metastatic rectal cancer. Case Rep Gastroenterol 2008; 2:505-8. [PMID: 21897807 PMCID: PMC3166819 DOI: 10.1159/000183537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A 65-year-old man was admitted with penile tenderness and dysuria due to priapism. Enhanced computed tomography revealed metastatic tumors in the liver, lung, sacrum and lymph nodes. Advanced rectal cancer, detected by colonoscopy as a primary tumor, was treated with chemotherapy (FOLFOX4). Although the rectal cancer showed no change, five months of chemotherapy improveid the priapism, suggesting that chemotherapy can improve rare symptoms of rectal cancer.
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214
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Abe Y, Ohata T, Ono S, Aoki M, Miura H, Nagahata M, Hatayama Y, Tsushima F, Morimoto K, Kawaguchi H. Treatment of Superior Vena Cava Syndrome: Efficacy of Radiation Therapy Depends on Histopathology of Underlying Tumors. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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215
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Suzuki K, Takahashi H, Fujisawa N, Sekino Y, Akimoto K, Tomimoto A, Saito K, Yoneda M, Inamori M, Abe Y, Kirikoshi H, Kobayashi N, Kubota K, Saito S, Koyama S, Nakajima A. Gastric ulcer following a thrombotic aneurysm of the splenic artery. Endoscopy 2008; 40 Suppl 2:E193-4. [PMID: 18709612 DOI: 10.1055/s-2008-1077418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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216
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Abe Y, Tanase T, Ohta K. Crystal structures and mesomorphism of metal–salen complexes with 4-substituted long alkoxy chains. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308083025] [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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217
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Abe Y, Nakai I, Kriengkamol T, Shuji M, Tadashi U, Kazuo T. Development of portable X-ray powder diffractometer and its application to archaeological artifacts. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308079567] [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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218
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Nakai I, Tantrakarn K, Kato N, Abe Y. X-ray analysis of cultural heritage at museums by using portable instruments. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308094658] [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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219
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Abe Y, Tamura T, Ishikawa T, Masami F. Crystal structures and pseudo-polymorphism of anionic surfactants. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308085577] [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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220
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Hattori Y, Higurashi T, Takahashi H, Inamori M, Abe Y, Rino Y, Nakajima A. Gastric varices with remarkable collateral veins in valpronic Acid-induced chronic pancreatitis. Case Rep Gastroenterol 2008; 2:279-82. [PMID: 21490900 PMCID: PMC3075155 DOI: 10.1159/000151288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Valproic acid (VPA) is a commonly prescribed and approved treatment for epilepsy, including Angelman syndrome, throughout the world. However, the long-term administration of drugs like VPA is associated with the possible development of gastric varices and splenic obstruction as a result of chronic pancreatitis. Such cases can be difficult to treat using endoscopy or interventional radiology because of hemodynamic abnormalities; therefore, surgical treatment is often necessary.
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Hattori Y, Kobayashi S, Takahashi H, Yoneda M, Inamori M, Abe Y, Kubota K, Saito S, Nakajima A. Gastric inflammatory fibroid polyp treated by endoscopic submucosal dissection. Case Rep Gastroenterol 2008; 2:283-6. [PMID: 21490901 PMCID: PMC3075156 DOI: 10.1159/000151330] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The endoscopic examination of a 64-year-old male patient revealed a gastric submucosal tumor in the anterior wall of the gastric antrum. The lesion increased in diameter to 25 mm and was resected completely with endoscopic submucosal dissection (ESD). Histological examination of the submucosal tumor gave a diagnosis of an inflammatory fibroid polyp (IFP). It is suggested that ESD may be an effective and safe therapy for gastric submucosal tumors.
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222
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Abe Y, Kuroda Y, Kuboki N, Matsushita M, Yokoyama N, Kojima N. Contribution of Complement Component C3 and Complement Receptor Type 3 to Carbohydrate-dependent Uptake of Oligomannose-coated Liposomes by Peritoneal Macrophages. J Biochem 2008; 144:563-70. [DOI: 10.1093/jb/mvn101] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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223
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Sato Y, Tsuga K, Abe Y, Asahara S, Akagawa Y. Dimensional measurement and finite element analysis of I-bar clasps in clinical use. J Oral Rehabil 2008. [DOI: 10.1111/j.1365-2842.2000.00621.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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224
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Tamimoto Y, Horiuchi T, Tsukamoto H, Otsuka J, Mitoma H, Kimoto Y, Nakashima H, Muta K, Abe Y, Kiyohara C, Ueda A, Nagasawa K, Yoshizawa S, Shimoda T, Harada M. A dose-escalation study of rituximab for treatment of systemic lupus erythematosus and Evans' syndrome: immunological analysis of B cells, T cells and cytokines. Rheumatology (Oxford) 2008; 47:821-7. [PMID: 18397955 DOI: 10.1093/rheumatology/ken071] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Accumulating evidence suggests that B-cell depletion therapy by rituximab may be effective for autoimmune disorders. However, an optimal dose of rituximab and a mechanism of its action remain to be established. We performed a dose-escalation study for treatment of Japanese patients with autoimmune diseases including eight with SLE and one with Evans' syndrome. METHODS Rituximab was infused intravenously, weekly 4 times in a dose-escalating fashion at three different doses of 100, 250 or 375 mg/m(2) to three patients each. Immunological parameters were monitored at certain points until 12 months after the treatment. RESULTS Rituximab was well tolerated and safe in these patients. Seven out of eight SLE patients and one with Evans' syndrome clinically responded completely or partially to the treatment. Four patients achieved long-term remission (18-30 months) without any additional treatment. In these patients, a significant decrease in circulating B cells continued for 6 months after the treatment. The mean fluorescence intensities of CD19, CD21, CD40 and BR3 on the residual B cells as well as the percentage of CD69+ CD4+ T cells decreased significantly. Serum TNF-alpha levels decreased significantly on day 2. The Th1/Th2 balance of CD4+ T cells gradually shifted towards a Th1 type by 6 months. CONCLUSION In addition to B-cell depletion, modification of B-cell and T-cell phenotypes as well as cytokine profiles may be involved in the action of rituximab.
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Abe Y, Doi K, Hattori Y. The clinical significance of the scaphoid cortical ring sign: a study of normal wrist X-rays. J Hand Surg Eur Vol 2008; 33:126-9. [PMID: 18443049 DOI: 10.1177/1753193407087572] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The scaphoid cortical ring sign, identified as a radiological indicator of rotary subluxation of the scaphoid, is frequently seen on normal wrist X-rays. This study examined the clinical significance of this sign in 139 normal wrists in 114 patients, with a mean age of 52 (range 15-81) years. In this study, there were no significant relationships between the appearance of a cortical ring sign and age, gender or hand dominance. Consequently, a cortical ring sign indicates scaphoid flexion, but may be visible in the normal wrist at any age or gender and in either hand and is not necessarily an indicator of pathology in the wrist.
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Yilmaz B, Ayik S, Abe Y, Boilley D. Non-Markovian diffusion over a parabolic potential barrier: Influence of the friction-memory function. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 77:011121. [PMID: 18351832 DOI: 10.1103/physreve.77.011121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2007] [Revised: 11/16/2007] [Indexed: 05/26/2023]
Abstract
The over-passing probability across an inverted parabolic potential barrier is investigated according to the classical and quantal generalized Langevin equations. It is shown that, in the classical case, the asymptotic value of the over-passing probability is determined by a single dominant root of the "characteristic function," and it is given by a simple expression. The expression for the over-passing probability is quite general, and details of dissipation mechanism and memory effects enter into the expression only through the dominant root of the characteristic equation.
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Taniguchi S, Hayashi N, Abe Y, Iwamoto D, Kishigami S, Kishi M, Kato H, Mitani T, Matsumoto K, Hosoi Y, Iritani A, Nagao Y, Saeki K. 58 PRODUCTION OF CLONED BOVINE EMBRYOS DERIVED FROM AMNIOTIC CELLS OF PREGNANT COWS. Reprod Fertil Dev 2008. [DOI: 10.1071/rdv20n1ab58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Progeny tests are widely used for selection of sires for beef and dairy cattle. A less costly method might be to clone the sire candidates at their earliest developmental stage possible. To produce cloned bulls, we obtained amniotic cells as donors for nuclear transfer by transvaginal aspiration of pregnant cows. However, the collected cells may include some maternal cells. In this study, we examined collection methods to obtain only fetal cells from the collected fluid. We also examined the developmental capacity of the embryos cloned from these cells. Amniotic fluids were aspirated from pregnant cows by ultrasound-guided aspiration. We collected amniotic fluids from 27 pregnant Japanese black beef cattle (between 58 and 132 days of gestation). In Method 1, cells were recovered from the whole amniotic fluid (approximately 15 mL). In Method 2, the initial 5 mL of aspirated fluid was discarded and then the next 10 mL sample was collected. Cells were recovered from the collected fluids. The cells in the fluids were washed twice by centrifugation and then cultured in AmnioMAX-II medium (GIBCO, Grand Island, NY, USA). After 3–4 passages, the sex of the cell lines was determined by the loop-mediated isothermal amplification (LAMP) method (Eiken Chemical Co., Ltd., Tokyo, Japan). For the cell lines that were determined as 'male' by the LAMP method we further analyzed the sex of individual cells (137–620 cells of each cell line) by fluorescent in situ hybridization (FISH) using a bovineY chromosome-specific probe (Kobayashi et al. 1998 Mol. Reprod. Dev. 51, 390–394). The percentage of male cells obtained from Methods 1 and 2 were 0–0.4% (from 4 animals) and 93.7–99.5% (from 6 animals), respectively. Then, we used confluent amniotic cells from 3 cell lines obtained by Method 2 as donor cells for nuclear transfer and examined the developmental capacity of the cloned embryos. Bovine fibroblasts cultured under serum starvation were used as a control. The cells were electrically fused (2.7 kV cm–1, 11 µs, 2 times) with enucleated bovine oocytes, and activated with a calcium ionophore and cycloheximide. They were subsequently cultured in mSOF until 168 h post-activation. The data were analyzed with Fisher's protected least-squares difference (PLSD) test following ANOVA. The rates of fusion, cleavage, and development to the blastocyst stage of the cloned embryos were the same as those of the control embryos (78% v. 81%, 75% v. 75%, and 22% v. 27%, respectively; P > 0.05). Furthermore, the rate of male blastocysts derived from the cloned embryos with the three cell lines was 95% (19/20). These results indicate that the amniotic fluids collected from pregnant cows by Method 2 contained fewer maternal cells, and that the embryos cloned from the cells developed in a manner similar to that of embryos cloned from the fibroblasts.
This work was supported byWakayama Prefecture CREATE, JST.
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Iwamoto D, Kishigami S, Taniguchi S, Abe Y, Matsui T, Kasamatsu A, Tatemizo A, Mitani T, Kato H, Matsumoto K, Hosoi Y, Wakayama T, Iritani A, Saeki K. 38 EFFECTS OF TRICHOSTATIN A ON DNA METHYLATION IN CLONED BOVINE EMBRYOS. Reprod Fertil Dev 2008. [DOI: 10.1071/rdv20n1ab38] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Recently, the efficiency of full-term development of somatic cloned mouse embryos was significantly increased by treatment with trichostatin A (TSA), an inhibitor of histone deacetylase (Kishigami et al. 2006 Biochem. Biophys. Res. Commun. 340, 183–189; Rybouchkin et al. 2006 Biol. Reprod. 74, 1083–1089). We have shown that TSA treatment improved the rate of development of the cloned bovine embryos to the blastocyst stage (Iwamoto et al. 2007 Reprod. Fertil. Dev. 19, 142 abst). Higher levels of DNA methylation have been shown in early cloned bovine embryos than in in vitro-fertilized (IVF) embryos (Dean et al. 2001 Proc. Nat. Acad. Sci. USA 98, 13734–13738; Santos et al. Curr. Biol. 13, 1116–1121). In this study, we examined the effects of TSA on DNA methylation levels in cloned bovine embryos by immunostaining with an antibody to 5-methyl cytosine (5-MeC). Bovine fibroblasts were cultured under serum starvation (0.4% FCS) for 7 days before they were used as donor cells. The cells were electrofused with bovine enucleated matured oocytes, and activated with a calcium ionophore and cycloheximide. Atotal of 131 cloned embryos were produced. The NT embryos were exposed to 0 (control) and 50 nmTSA from the start of activation to 48 h post-activation (hpa). They were then cultured in an mSOF medium. At 60 hpa, only embryos developed to the 8-cell stage were used for assessment of DNA methylation levels. Sixteen TSA-treated, 22 non-treated, and 19 IVF embryos were immunostained with 5-MeC antibody. For quantitative analysis of the DNA methylation levels, 5-MeC signals in the fluorescent images were determined using an image analyzer system (Aqua Cosmos; Hamamatsu Photonics, Shizuoka, Japan). The data were analyzed with Tukey-Kramer post hoc test for multiple comparisons following ANOVA. Relative levels of DNA methylation of TSA-treated cloned and IVF embryos did not differ (P > 0.05), but were lower than those of non-treated cloned embryos (P < 0.05). The results indicate that TSA treatment of cloned bovine embryos leads to a reduction of DNA methylation levels of their genome. The data suggest that the TSA treatment decreased the DNA methylation levels of cloned bovine embryos to the levels of IVF embryos, resulting in improved blastocyst development of the cloned embryos.
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Yoshinaga Y, Ukai T, Abe Y, Hara Y. Expression of receptor activator of nuclear factor kappa B ligand relates to inflammatory bone resorption, with or without occlusal trauma, in rats. J Periodontal Res 2007; 42:402-9. [PMID: 17760817 DOI: 10.1111/j.1600-0765.2007.00960.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVE Receptor activator of nuclear factor kappa B ligand (RANKL) is an important factor in osteoclast differentiation, activation and survival; however, its involvement in inflammatory bone resorption, with or without occlusal trauma, is unclear. The purpose of the present study was to investigate the distribution of RANKL-expressing cells in rat periodontium during lipopolysaccharide-induced inflammation with or without occlusal trauma. MATERIAL AND METHODS Lipopolysaccharide was injected into rat gingiva of the lower left first molar to induce inflammation. In addition, the occlusal surface of the upper left first molar of rat was raised by placing a gold inlay to induce occlusal trauma in the lower left first molars. The distribution of RANKL-expressing cells was immunohistochemically observed. RESULTS In the inflammatory model, many osteoclasts were observed at the apical inter-radicular septum on day 5 and they were reduced by day 10. On the other hand, in the inflammatory model with occlusal trauma, many osteoclasts were still observed on day 10. RANKL expression was similar to the changes in osteoclast number. The expression of RANKL increased in endothelial cells, inflammatory cells and periodontal ligament cells. CONCLUSION These findings clearly demonstrated that RANKL expression on endothelial cells, inflammatory cells and periodontal ligament cells is involved in inflammatory bone resorption and the expression is enhanced by traumatic occlusion. These results suggest that RANKL expression on these cells is closely involved in the increase of osteoclasts induced by occlusal trauma.
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Ochiai K, Sato S, Wada M, Kubota N, Kondo K, Yamauchi M, Abe Y, Nishitani T, Konno C. Thin slit streaming experiment for ITER by using D-T neutron source. FUSION ENGINEERING AND DESIGN 2007. [DOI: 10.1016/j.fusengdes.2007.05.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Okajima K, Abe Y, Suzuki K, Salameh MJ, Di Tullio MR, Jin Z, Sacco RL, Mohr JP, Homma S. Impact of Valvular Thickness on Stroke Recurrence in Medically Treated Patients with Stroke. Cerebrovasc Dis 2007; 24:375-80. [PMID: 17804905 DOI: 10.1159/000107918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Accepted: 03/07/2007] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND It remains controversial whether left-sided valvular thickening (VaT) is a risk factor for ischemic stroke. Little is known about the relationship between VaT and the recurrent adverse event rate in medically treated patients with stroke. METHODS We examined the outcomes of 627 noncardioembolic stroke patients who were double-blindly assigned to either warfarin or aspirin therapy and assessed VaT using transesophageal echocardiography. Endpoints were recurrent ischemic stroke or death from any cause. The Cox proportional hazards model was used to adjust for covariates. RESULTS VaT was present in 57.3% of the patients (359/627), 34.6% (271/627) involving the aortic valve and 46.4% (291/627) involving the mitral valve. There was no difference in the time to primary endpoints between those with and without VaT of the aortic valve (p = 0.49; hazard ratio, HR: 1.17; 95% CI: 0.74-1.85; 2-year event rates: 18.9 vs. 13.2%) or mitral valve (p = 0.66; HR: 0.91; 95% CI: 0.60-1.38; 2-year event rates: 16.9 vs. 14.7%). Among the patients with VaT, there was no significant difference in the time to primary endpoints between those treated with warfarin and those with aspirin (p = 0.13, HR: 0.65, 95% CI: 0.37-1.14, 2-year event rates: 15.2 vs. 22.7% for the aortic valve; p = 0.22, HR: 0.70, 95% CI: 0.40-1.23, 2-year event rates: 14.2 vs. 19.6% for the mitral valve). CONCLUSIONS VaT does not appear to increase recurrent adverse event rates in medically treated patients with ischemic stroke, regardless of warfarin or aspirin therapy.
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Yoneda M, Saito S, Ikeda T, Fujita K, Mawatari H, Kirikoshi H, Inamori M, Nozaki Y, Akiyama T, Takahashi H, Abe Y, Kubota K, Iwasaki T, Terauchi Y, Togo S, Nakajima A. Hepatitis C virus directly associates with insulin resistance independent of the visceral fat area in nonobese and nondiabetic patients. J Viral Hepat 2007; 14:600-7. [PMID: 17697011 DOI: 10.1111/j.1365-2893.2006.00836.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Insulin resistance (IR) is known to be associated with the visceral adipose tissue area. Elucidation of the relationship between hepatitis C virus (HCV) and IR is of great clinical relevance, because IR promotes liver fibrosis. In this study, we tested the hypothesis that HCV infection by itself may promote IR. We prospectively evaluated 47 patients with chronic HCV infection who underwent liver biopsy. Patients with obesity, type 2 diabetes mellitus (DM), or a history of alcohol consumption were excluded. IR was estimated by calculation of the modified homeostasis model of insulin resistance (HOMA-IR) index. Abdominal fat distribution was determined by computed tomography. Fasting blood glucose levels were within normal range in all the patients. The results of univariate analysis revealed a significant correlation between the quantity of HCV-RNA and the HOMA-IR (r = 0.368, P = 0.0291). While a significant correlation between the visceral adipose tissue area and the HOMA-IR was also observed in the 97 control, nondiabetic, non-HCV-infected patients (r = 0.398, P < 0.0001), no such significant correlation between the visceral adipose tissue area and the HOMA-IR (r = 0.124, P = 0.496) was observed in the patients with HCV infection. Multiple regression analysis with adjustment for age, gender and visceral adipose tissue area revealed a significant correlation between the HCV-RNA and the HOMA-IR (P = 0.0446). HCV is directly associated with IR in a dose-dependent manner, independent of the visceral adipose tissue area. This is the first report to demonstrate the direct involvement of HCV and IR in patients with chronic HCV infection.
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Igarashi T, Igarashi S, Abe Y, Minegishi T, Liang SG, Igarashi M. A novel therapeutic agent for the treatment of endometriosis: 3-ethyl pyridine (3EP), detected from tobacco smoke – direct effects of a 3EP-loaded vaginal ring on deep and vaginal endometriosis. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Aoyagi M, Watanabe T, Ito T, Abe Y. Reliability and frequency specificity of auditory steady-state response detected by phase spectral analysis. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2007; 122:EL58. [PMID: 17927308 DOI: 10.1121/1.2761888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Automatic threshold detection techniques are described for auditory steady-state response (ASSR) elicited with a sinusoidally amplitude-modulated tone. The reliability and frequency specificity of ASSR are discussed. When applied to awake adults and detected by phase spectral analysis, 40-Hz ASSR threshold patterns closely resemble their corresponding audiograms. However, 40-Hz ASSR is insufficiently reliable for determining hearing thresholds in young children during sleep. On the other hand, 80-Hz ASSR is detected clearly in sleeping children. Moreover, 80-Hz ASSR threshold patterns also closely resemble the corresponding audiograms. Therefore, 80-Hz ASSR appears to be useful for objective audiometry in children.
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Abe Y, Rokkaku T, Kuniyoshi K, Matsudo T, Yamada T. Clinical results of dermofasciectomy for Dupuytren's disease in Japanese patients. J Hand Surg Eur Vol 2007; 32:407-10. [PMID: 17287058 DOI: 10.1016/j.jhsb.2006.12.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2006] [Revised: 12/10/2006] [Accepted: 12/10/2006] [Indexed: 02/03/2023]
Abstract
The surgical outcomes of dermofasciectomy for Dupuytren's disease were evaluated in nine hands of eight patients in a Japanese population. The patients were examined for postoperative complications, problems associated with the skin graft, evidence of recurrent disease, sensation over the graft and pre- and postoperative range of motion at the metacarpophalangeal and the proximal interphalangeal joints. The mean two-point discrimination over the skin graft was 14 mm. The mean remaining flexion contracture at the metacarpophalangeal joint was 5 degrees and that at the proximal interphalangeal joint was 34 degrees . Recurrence occurred in two patients: one had a minor nodule and the other a natatory cord, which did not result in the redevelopment of a contracture. This study supports the use of dermofasciectomy for the treatment of recurrent Dupuytren's disease, as well as for the treatment of primary disease in those patients with a strong Dupuytren's diathesis in this population.
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Nomura T, Kawamura M, Shibata H, Abe Y, Ohkawa A, Mukai Y, Sugita T, Imai S, Nagano K, Okamoto T, Tsutsumi Y, Kamada H, Nakagawa S, Tsunoda S. Creation of a novel cell penetrating peptide, using a random 18mer peptides library. DIE PHARMAZIE 2007; 62:569-73. [PMID: 17867548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Cell penetrating peptides (CPPs) have drawn attention as carriers for intracellular drug delivery. It is commonly believed that TAT peptide is the best carrier among the existing CPPs due to its high translocational activity. Despite considerable research, the cellular uptake mechanism of TAT peptide remains unclear. Additionally, the transduction efficiency of TAT peptide is insufficient for use in intracellular therapy. In this study, we attempted to identify novel CPPs from a random 18mer peptide library using a phage display system. To isolate novel CPPs more effectively, PSIF (protein synthesis inhibition factor) was used with the screening system. Consequently, we isolated 7 novel CPPs from the library and determined by flow cytometry and confocal laser microscopy that these CPPs were taken up into cells. Once the cellular uptake pathway of these CPPs has been determined, it may be possible to use them for intracellular therapy.
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Haraguchi K, Ohsugi M, Abe Y, Semba K, Akiyama T, Yamamoto T. Ajuba negatively regulates the Wnt signaling pathway by promoting GSK-3beta-mediated phosphorylation of beta-catenin. Oncogene 2007; 27:274-84. [PMID: 17621269 DOI: 10.1038/sj.onc.1210644] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The Wnt signaling pathway is essential for embryonic development and carcinogenesis. Upon Wnt stimulation, beta-catenin is stabilized and associates with T-cell factor or lymphoid enhancing factor, thereby activating transcription of target genes. In the absence of Wnt stimulation, the level of beta-catenin is reduced via glycogen synthase kinase (GSK)-3beta-mediated phosphorylation and subsequent proteasome-dependent degradation. Here, we report the identification of Ajuba as a negative regulator of the Wnt signaling pathway. Ajuba is a member of LIM domain-containing proteins that contribute to cell fate determination and regulate cell proliferation and differentiation. We found that enforced expression of Ajuba destabilized beta-catenin and suppressed target gene expression. Ajuba promoted GSK-3beta-mediated phosphorylation of beta-catenin by reinforcing the association between beta-catenin and GSK-3beta. Furthermore, Wnt stimulation induced both accumulation of beta-catenin and destabilization of Ajuba. Our findings suggest that Ajuba is important for regulation of the Wnt signaling pathway.
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Koike T, Ohara S, Inomata Y, Abe Y, Iijima K, Shimosegawa T. The prevalence of Helicobacter pylori infection and the status of gastric acid secretion in patients with gastroesophageal junction adenocarcinoma in Japan. Inflammopharmacology 2007; 15:61-4. [PMID: 17450443 DOI: 10.1007/s10787-006-1549-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have previously reported that H. pylori infection prevents reflux esophagitis (RE) and Barrett's esophagus (BE) by decreasing gastric acid secretion. Gastroesophageal (GE) junction adenocarcinoma, including Barrett's adenocarcinoma, has been thought to be a complication of gastroesophageal reflux disease. However, the relationship between H. pylori infection, gastric acid secretion and GE junction adenocarcinoma had not yet been investigated in Japan. We demonstrated that the status of gastric acid secretion was higher in patients with GE junction adenocarcinoma than in patients with early gastric cancer (EGC), and that the level was the same in patients with RE and those with BE. We also found that the prevalence of H. pylori infection in patients with GE junction adenocarcinoma was significantly lower than that in patients with EGC, although not as low as that in patients with RE and BE, suggesting that preservation of gastric acid secretion may be important for the development of GE junction adenocarcinoma in Japanese people, regardless of the presence of H. pylori infection.
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Wada H, Kobayashi T, Matsumoto T, Nobori T, Abe Y. ADAMTS13 RELATED MARKERS IN PLASMA FROM PATIENTS WITH TTP. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb02072.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Matsumoto T, Wada H, Abe Y, Kobayashi T, Yamada N, Nobori T. ELEVATED D-DIMER LEVELS IN PATIENTS WITH DEEP VEIN THROMBOSIS. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb02278.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Adachi T, Naruko T, Itoh A, Komatsu R, Abe Y, Shirai N, Yamashita H, Ehara S, Nakagawa M, Kitabayashi C, Ikura Y, Ohsawa M, Yoshiyama M, Haze K, Ueda M. Neopterin is associated with plaque inflammation and destabilisation in human coronary atherosclerotic lesions. Heart 2007; 93:1537-41. [PMID: 17575334 PMCID: PMC2095726 DOI: 10.1136/hrt.2006.109736] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Previous studies have shown that recent activation of the inflammatory response in coronary atherosclerotic lesions contributes to rapid progressive plaque destabilisation. Neopterin, a by-product of the guanosine triphosphate pathway, is produced by activated macrophages and serves as an activation marker for monocytes/macrophages. OBJECTIVE To elucidate the role of neopterin in coronary plaque destabilisation by immunohistochemical study of the presence of neopterin in coronary atherectomy specimens obtained from patients with stable angina pectoris (SAP) and unstable angina pectoris (UAP). PATIENTS AND METHODS All patients underwent atherectomy of the primary atherosclerotic lesions responsible for SAP (n = 25) and UAP (n = 25). Frozen samples were studied with antibodies against smooth muscle cells, macrophages, T cells, neutrophils and neopterin. RESULTS In 22/25 patients with UAP, abundant neopterin-positive macrophages were found at the sites of coronary culprit lesions. However, in 25 lesions from patients with SAP, only 11 lesions showed neopterin positivity. Quantitatively, the neopterin-positive macrophage score was significantly higher (p<0.001) in patients with UAP than in patients with SAP. Moreover, the neopterin-positive macrophage score showed a significant positive correlation with the number of neutrophils or T cells, respectively (neutrophils, r = 0.55, p<0.001; T cells, r = 0.70, p<0.001). CONCLUSIONS Neopterin can be considered as one of the significant factors in the process of plaque inflammation and destabilisation in human coronary atherosclerotic lesions. Its exact role in the process needs to be investigated further.
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Maruyama K, Sutani Y, Abe Y, Motohiro M, Tsujimoto S, Katoh S. PO22-716 THE EFFECTS OF TELMISARTAN IN PATIENTS WITH METABOLIC SYNDROME. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71726-9] [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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243
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Yaosaka M, Abe R, Ujiie H, Abe Y, Shimizu H. Unilateral periorbital oedema due to sarcoid infiltration of the eyelid: an unusual presentation of sarcoidosis with facial nerve palsy and parotid gland enlargement. Br J Dermatol 2007; 157:200-2. [PMID: 17489978 DOI: 10.1111/j.1365-2133.2007.07939.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Goto K, Hayashi M, Inamori M, Akiyama T, Ikeda T, Fujita K, Ikeda I, Fujisawa T, Takahashi H, Yoneda M, Hara K, Yasuzaki H, Abe Y, Kirikoshi H, Kubota K, Saito S, Kawana I, Ueno N, Sakashita T, Nakajima A. Education and imaging. Gastrointestinal: diphyllobothriasis. J Gastroenterol Hepatol 2007; 22:445. [PMID: 17295781 DOI: 10.1111/j.1440-1746.2007.04879.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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245
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Sakai H, Inamori M, Sato T, Akimoto K, Akiyama T, Fujita K, Yoneda M, Takahashi H, Goto A, Kusakabe A, Abe Y, Kirikoshi H, Kubota K, Ueno N, Rino Y, Nakajima A. Giant subcutaneous abscess after percutaneous endoscopic gastrostomy. Endoscopy 2007; 39 Suppl 1:E264. [PMID: 17957616 DOI: 10.1055/s-2007-966598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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246
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Akimoto K, Inamori M, Akiyama T, Endo H, Fujita K, Yoneda M, Takahashi H, Goto A, Abe Y, Kirikoshi H, Kobayashi N, Kubota K, Saito S, Ueno N, Nakajima A. Sclerosant extravasation following endoscopic injection sclerotherapy for bleeding gastric varices. Endoscopy 2007; 39 Suppl 1:E242. [PMID: 17957650 DOI: 10.1055/s-2007-966832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Mori K, Abe Y, Kato T. Finite Element Simulation of Plastic Joining Processes of Steel and Aluminum Alloy Sheets. ACTA ACUST UNITED AC 2007. [DOI: 10.1063/1.2740811] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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249
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Iwamoto D, Saeki K, Kishigami S, Kasamatsu A, Tatemizo A, Abe Y, Ikeda S, Taniguchi S, Mitani T, Kato H, Matsumoto K, Hosoi Y, Wakayama T, Iritani A. 48 EFFECTS OF TRICHOSTATIN A ON DEVELOPMENT OF BOVINE SOMATIC CELL NUCLEAR TRANSFER EMBRYOS. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab48] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Although cloning by somatic cell nuclear transfer (SCNT) has been achieved in various mammalian species, its efficiency has been very low (Han et al. 2003 Theriogenology 59, 33–44). Successful cloning requires conversion from differentiated donor nuclei to embryonic nuclei after transfer of the somatic nuclei into enucleated oocytes. Reprogramming of the transferred somatic nuclei must be completed by the time when normal activation of the embryonic genome occurs (Solter 2000 Nat. Rev. Genet. 1, 199–207). Recently, both full-term development and pre-implantation development of mouse SCNT embryos were significantly enhanced by treatment with trichostatin A (TSA), an inhibitor of histone deacetylase (Kishigami et al. 2006 Biochem. Biophys. Res. Commun. 340, 183–189; Rybouchkin et al. 2006 Biol. Reprod. 74, 1083–1089). The objective of this study was to investigate the effects of TSA on the development of bovine SCNT embryos. Bovine fibroblasts were cultured under serum starvation (0.4% FCS) for 7 days and then used as donor cells. The cells were electro-fused with bovine enucleated matured oocytes, and activated with a calcium ionophore and cycloheximide. They were subsequently cultured in mSOF medium until 168 h post-activation (hpa). The NT embryos were exposed to 0 (control), 5, 50, and 500 nM TSA from the start of activation to 48 hpa. Experiments were repeated 3 times, and the data were analyzed with Fisher's PLSD test following ANOVA. The cleavage rates were the same among the groups (60 to 80%; P >0.05). However, the blastocyst rate of NT embryos treated with 50 nM TSA was higher than that of control embryos (40% vs. 19%, respectively; P < 0.05). On the other hand, the blastocyst rate was lower with 500 nM TSA than with 5 or 50 nM TSA (7% vs. 33% or 40%; P < 0.05). These data suggest that proper TSA treatment after somatic cloning improves the rate of development of bovine cloned embryos to the blastocyst stage. Further research is needed to examine whether NT embryos derived from different cell lines or types have similar susceptibility to TSA.
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Hoshino Y, Kobayashi N, Hayashi N, Matsuhashi T, Saeki K, Ikeda S, Taniguchi S, Kasamatsu A, Iwamoto D, Abe Y, Matsumoto K, Hosoi Y, Iritani A. 44 NUCLEAR TRANSFER IN CATTLE USING SOMATIC CELLS FROM FROZEN TESTICLES WITHOUT CRYOPROTECTANTS. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab44] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Obtaining somatic cells from preserved organs or tissues is useful for the conservation and regeneration of genetic resources by nuclear transfer (NT). Bovine cells for NT have been obtained from cooled carcasses stored at 0�C for several days (Arat et al. 2005 Reprod. Fert. Dev. 17, 164 abst) and from fetal skin tissue cryopreserved with DMSO (Fahrudin et al. 2001 J. Vet. Med. Sci. 63, 1151–1154). However, frozen storage of organs or tissues without cryoprotectants was considered to be quite inappropriate for obtaining viable cells. We report here that viable donor cells for NT were obtained from bovine testicles after frozen storage without cryoprotectants. In the first experiment, we investigated whether viable cells can be recovered from frozen testicles castrated from Japanese Black bulls. The testicles were frozen at -80�C in a freezer for several days; then some were stored in liquid nitrogen for 10 months without cryoprotectants. Before thawing, the testicles were divided into 3 pieces, caput epididymis, cauda epididymis, and testis. Each piece was then put in saline at 42�C for quick thawing. Thawed tissues were minced into 5-mm pieces and incubated at 39�C for 2 h in DMEM containing 0.1% collagenase and 0.2% dispase. After filtration through a 250-�m nylon mesh filter, the filtrates were centrifuged at 250 � 4g for 5 min. Then precipitates were resuspended with MF-start� primary culture medium (TM Cell Research Inc., Fukui, Japan) and incubated at 38.5�C under the atmosphere of 5% CO2 in air with high humidity. After 5 days of incubation, the medium was replaced and nonadherent debris was discarded. Viable cells were obtained from the caput epididymis. These cells actively proliferated and expanded. In the next experiment, to determine whether these cells can be used for NT, the cells were electrically fused with enucleated bovine oocytes. Bovine fibroblasts taken from unfrozen ear tissue were used as controls. The NT embryos were activated by Ca-ionophore treatment, followed by treatment with cycloheximide for 6 h, and then cultured in mSOF for 168 h. NT embryos reconstructed from testicle cells did not significantly differ from NT embryos made with control cells with regard to blastocyst rates (22.1% and 20.2%), cell number of blastocysts [130 � 43 and 121 � 43 (mean � SD)], and ICM ratio (21.1% and 22.6%), respectively (ANOVA). These results suggest that somatic cells derived from bovine frozen testicles can be used for nuclear transfer. Further studies are needed to examine whether viable cells can be obtained from other frozen organs or tissues.
This study was partially supported by a grant from the Wakayama Prefecture Collaboration of Regional Entities for the Advancement of Technological Excellence, JST.
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