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World Journal of Gastroenterology 2018年第37期24卷 4291-4296页

作者： Hideki Ishimaru Minoru Morikawa Takayuki Sakugawa ichiro sakamoto Yasuhide Motoyoshi Yohei Ikebe Masataka Uetani Department of Radiology Nagasaki University HospitalNagasaki 852-8501Japan Department of Radiology Nagasaki Harbor Medical CancerNagasaki 850-8555Japan Department of Gastroenterology Nagasaki Harbor Medical CancerNagasaki 850-8555Japan Department of Radiological Sciences Nagasaki University Graduate School of Biomedical SciencesNagasaki 852-8501Japan

A male patient underwent conventional transcatheter chemoembolization for advanced recurrent hepatocellular carcinoma(HCC). Even after the injection of 7 m L of lipiodol followed by gelatin sponge particles, the flow of feeding arteries did not slow down. A repeat angiography revealed a newly developed vascular lake draining into systemic veins; however, embolization was continued without taking noticing of the vascular lake. The patient's level of consciousness deteriorated immediately after the procedure, and non-contrast computed tomography revealed pulmonary and cerebral lipiodol embolisms. The patient's level of consciousness gradually improved after 8 wk in intensive care. In this case, a vascular lake emerged during chemoembolization and drained into systemic veins, offering a pathway carrying lipiodol to pulmonary vessels, the most likely cause of this serious complication. We should be aware that vascular lakes in HCC may drain into systemic veins and can cause intratumoral arteriovenous shunts.

关键词： Transcatheter arterial chemoembolization Arteriovenous shunt Hepatocellular carcinoma Vascular lake Cerebral embolism

Imaging diagnosis and interventional radiology in systemic vasculitis with particular emphasis on Takayasu arteritis:Part 1

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中国介入影像与治疗学 2005年第1期2卷 1-5页

作者： Kuniaki HAYASHI ichiro sakamoto Naofumi MATSUNAGA Kazuto ASHIZAWA Masataka UETANI NagasakiRosai Hospital SaseboNagasaki 857-0134Japan Department of Radiology Nagasaki University School of MedicineSakamotoNagasaki 852-8501Japan Department of Radiology Yamaguchi University School of MedicineUbeYamaguchi 755-8505Japan

This is a review article describing some new and interesting aspects in the diagnosis and treatment in systemic vasculitis and demonstrating several cases that we have *** emphasis will be put on Takayasu arteritis(also known as aortitis syndrome)most commonly observed in Japan and other oriental *** and MRI better demonstrate the vessel wall abnormality of Takayasu arteritis than *** of plain chest radiograph should also be kept in mind;it could provide a clue in the diagnosis of Takayasu arteritis in its early stage.

关键词： Systemic vasculitis Takayasu arteritis Aortitis syndrome Imaging diagnosis

Imaging diagnosis and interventional radiology in systemic vasculitis with particular emphasis on Takayasu arteritis: Part 2

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中国介入影像与治疗学 2005年第2期2卷 79-84页

作者： ichiro sakamoto Kuniaki HAYASHI Naofumi MATSUNAGA Kazuto ASHIZAWA Yohjiro MATSUOKA Masataka UETANI Department of Radiology Nagasaki University School of MedicineSakamotoNagasaki 852-8501Japan Nagasaki Rosai Hospital SaseboNagasaki 857-0134Japan Department of Radiology Yamaguchi University School of MedicineUbeYamaguchi 755-8505Japan Department of Radiology National Nagasaki Medical CenterKubaraOmura 856-8562Japan

In part 1 of this article,clinical features and imaging findings of Takayasu arteritis(also known as aortitis syndrome)were described in *** part 2,treatment of Takayasu arteritis will be first described and *** will be followed by description of clinical features and imaging findings of other systemic *** on interventional radiology for systemic vasculitis will also be made.

关键词： Systemic vasculitis Takayasu arteritis Aortitis syndrome Temporal arteritis Polyarteritis nodosa Kawasaki disease Wegener granulomatosis Behcet disease

Extrahepatic collaterals and liver damage in embolotherapy for ruptured hepatic artery pseudoaneurysm following hepatobiliary pancreatic surgery

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World Journal of Gastroenterology 2007年第3期13卷 408-413页

作者： Yoshitsugu Tajima Tamotsu Kuroki Ryuji Tsutsumi ichiro sakamoto Masataka Uetani Takashi Kanematsu Department of Surgery Nagasaki University Graduate School of Biomedical Sciences 1-7-1 Sakamoto Nagasaki 852-8501 Japan Department of Radiology and Radiation Biology Nagasaki University Graduate School of Biomedical Sciences 1-7-1 Sakamoto Nagasaki 852-8501 Japan

AIM: To evaluate the effects of extrahepatic collaterals to the liver on liver damage and patient outcome after embolotherapy for the ruptured hepatic artery pseudoa- neurysm following hepatobiliary pancreatic surgery. METHODS: We reviewed 9 patients who underwent transcatheter arterial embolization (TAE) for the ruptured hepatic artery pseudoaneurysm following major hepato- biliary pancreatic surgery between June 1992 and April 2006. We paid special attention to the extrahepatic arte- rial collaterals to the liver which may affect post-TAE liver damage and patient outcome. RESULTS: The underlying diseases were all malignan- cies, and the surgical procedures included hepatopancre- atoduodenectomy in 2 patients, hepatic resection with removal of the bile duct in 5, and pancreaticoduodenec- tomy in 2. A total of 11 pseudoaneurysm developed: 4 in the common hepatic artery, 4 in the proper hepatic artery, and 3 in the right hepatic artery. Successful he- mostasis was accomplished with the initial TAE in all patients, except for 1. Extrahepatic arterial pathways to the liver, including the right inferior phrenic artery, the jejunal branches, and the aberrant left hepatic artery, were identified in 8 of the 9 patients after the completion of TAE. The development of collaterals depended on the extent of liver mobilization during the hepatic resection, the postoperative period, the presence or absence of an aberrant left hepatic artery, and the concomitant arte- rial stenosis adjacent to the pseudoaneurysm. The liver tolerated TAE without significant consequences when at least one of the collaterals from the inferior phrenic ar-tery or the aberrant left hepatic artery was present. One patient, however, with no extrahepatic collaterals died of liver failure due to total liver necrosis 9 d after TAE. CONCLUSION: When TAE is performed on ruptured hepatic artery pseudoaneurysm, reduced collateral path- ways to the liver created by the primary surgical proce- dure and a short po

关键词： Hepatic artery pseudoaneurysm Transcatheter arterial embolization Extrahepatic collateral pathways Liver damage Hepatobiliary pancreatic surgery

Correlation between Automated Quantification of Lung Perfusion Blood Volume (PBV) and Pulmonary Artery Pressure

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Open Journal of Radiology 2016年第2期6卷 105-112页

作者： Hirofumi Koike Eijun Sueyoshi ichiro sakamoto Akira Tsuneto Masataka Uetani Department of Cardiovascular Medicine Nagasaki University Hospital Nagasaki Japan Department of Radiology Nagasaki University School of Medicine Nagasaki Japan

Purpose: Dual-energy CT (DECT) can be used for quantification of lung perfusion blood volume (PBV), allowing objective evaluation. However, no reports have investigated pulmonary perfusion correlating with pulmonary artery pressure (PAP) in patients with chronic pulmonary diseases. The purpose was to evaluate automated quantification of the lung PBV using dual-energy CT, and its correlation with PAP. Methods: 274 patients who underwent echocardiography within two weeks also underwent CT. The population was divided into high (≥40 mmHg) and low (<40 mmHg) estimated systolic PAP (sPAP) groups (n = 63 and n = 211, respectively). We retrospectively eva-luated the lung PBV using Syngo software, and correlations between the lung PBV and estimated sPAP. Results: Lung PBV values were 25.0 ± 9.6 and 29.0 ± 9.3 Hounsfield units (HU) in high and low sPAP groups, respectively, with a significant difference between them (p = 0.003). In the high sPAP group with underlying lung diseases (n = 15), chronic thromboembolism (n = 25), pulmonary artery stenosis (n = 12), and left heart failure (n = 11), using the Dana Point classification system, lung PBV values were 18.6 ± 1.6, 25.1 ± 4.5, 25.8 ± 4.5, and 32.7 ± 9.4 HU, respectively. There were significant differences in quantification of the lung PBV among them. The mean sPAP of subjects with left heart failure was significantly higher than in the others. In subjects with left heart failure, a positive correlation between the lung PBV value and sPAP was noted (R = 0.721, p < 0.0001). Conclusions: Automated quantification of the lung PBV may estimate the high sPAP. The lung PBV may contribute to clarifying the etiology of a high PAP due to left heart failure.

关键词： Dual-Energy CT Lung Perfusion Blood Volume Pulmonary Hypertension Iodine Attenuation

Comparison Study on Different Quantification Methods of Diffuse Myocardial Fibrosis of Dilated Cardiomyopathy Using Myocardial T1 Value

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Open Journal of Radiology 2013年第3期3卷 117-123页

作者： Takeshi Hayashida Eijun Sueyoshi Hiroki Nagayama ichiro sakamoto Masataka Uetani Department of Radiology Nagasaki University School of Medicine Nagasaki Japan

Purpose: The purpose is to compare several quantification methods and clarify which quantification method is reliable to estimate diffuse myocardial fibrosis with cardiac MRI in patients with dilated cardiomyopathy (DCM) using myocardial T1 value. Methods and Results: Delayed enhancement imaging was performed in 52 patients with DCM and 10 control subjects to identify fibrosis using an inversion time scout sequence. The mean contrast-enhanced myocardial (M) T1 values of the pre and post contrast-enhanced myocardial and left ventricular lumen (L) of control and dilated cardiomyopathy cases were compared. The calculated post M T1 value, pre M T1 value-post M T1 value, and (pre M TI value-post M T1 value)/(pre L T1 value-post L T1 value) were significantly different between the patient group and the control group (344.5 ± 31.6 vs. 390.4 ± 19.3 msec, 239.9 ± 64.2 msec vs. 134.0 ± 28.9 msec, and 0.50 ± 0.11 vs. 0.30 ± 0.60, respectively). (Pre M T1 value-post M T1 value)/(pre L T1 value-post L T1 value) was significantly the most related to the left ventricular ejection fraction (r = 0.66, p Conclusion: (Pre M T1 value-post M T1 value)/(pre L T1 value-post L T1 value) was the most reliable quantification method to estimate the severity of DCM.

关键词： Inversion Time Quantification Methods Myocardial Fibrosis Dilated Cardiomyopathy

Prognostic significance of BMP and activin membrane-bound inhibitor in colorectal cancer

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World Journal of Gastroenterology 2008年第31期14卷 4880-4888页

作者： Nozomi Togo Susumu Ohwada Shinji Sakurai Hiroyuki Toya ichiro sakamoto Tatsuya Yamada Tetsuhiro Nakano Ken Muroya Izumi Takeyoshi Takashi Nakajima Takashi Sekiya Yusuke Yamazumi Tsutomu Nakamura Tetsu Akiyama Departments of Surgery Graduate School of Medicine Gunma University Gunma 371-8511 Japan Departments of Tumor Pathology Graduate School of Medicine Gunma University Gunma 371-8511 Japan Laboratory of Molecular and Genetic Information Institute for Molecular and Cellular Biosciences University of Tokyo Tokyo 113-0032 Japan

AIM： To investigate the clinical significance of BMP and activin membrane-bound inhibitor （BAMBI） which is a pseudoreceptor of transforming growth factorbeta （TGF-β） type 1 receptors and acts as a negative regulator of TGF-β signaling and expression aberrantly elevated in colorectal cancers （CRCs）. We studied BAMBI expression in CRCs. METHODS： We studied BAMBI expression in 183 surgically resected CRCs by immunochemical and immunoblotting analyses using a generated monoclonal anti-BAMBI antibody. Commercially available anti-β- catenin and anti-p53 antibodies were also applied for immunochemical analyses as a comparison ***： Immunohistochemical analysis revealed that BAMBI expression was observed in 148 （80.8%）, and strong BAMBI expression was observed in 46% of the CRCs. Strong BAMBI expression was positively correlated with histological type, depth of invasion, lymph node metastases, and tumor node metastasis （TNM） stage （P 〈 0.05）. Clear associations were found between BAMBI and β-catenin （P = 0.035） and p53 （P =0.049） expression. In curatively resected CRC, 5-year recurrence-free survival was 51.9% （P = 0.037） for strong BAMBI expression compared to 79.8% for weak BAMBI expression. In the Cox＇s multivariate analysis, lymph node metastases （relative risk 6.685; P 〈 0.001） and depth of invasion （RR 14.0; P = 0.013） were significant indicators for recurrence, and strong BAMBI expression （RR 2.26; P = 0.057） tended to be significant. CONCLUSION： BAMBI was linked to a potentially aggressive tumor phenotype and predicted tumor recurrence and cancer-related death in CRC. BAMBI expression might be applicable in the routine clinical setting of CRC.

关键词： BMP and activin membrane-bound inhibitor Colorectal cancer Transforming growth factor-beta signal Prognosis Wnt signal

Anterior mediastinal abscess diagnosed in a young sumo wrestler after closed blunt chest trauma

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Chinese Journal of Traumatology 2015年第6期18卷 360-362页

作者： Tatsuro Sassa Ken-ichiro Kobayashi Masayuki Ota Takuya Washino Mayu Hikone Naoya sakamoto Sentaro Iwabuchi Mizuto Otsuji Kenji Ohnishi Department of Infectious Disease Tokyo Metropolitan Bokutoh General Hospital 4-23-15 kohtohbashi Sumida City Tokyo 130-0022 Japan

Most mediastinal abscesses result from infections after thoracotomy, esophageal perforation or pene- trating chest trauma. This disease is rarely caused by closed blunt chest trauma. All previously reported such cases after closed blunt chest trauma presented with hematoma and sternal osteomyelitis resulting from sternal fracture. Here we report a 15-year-old sumo wrestler who presented with an anterior mediastinal abscess without any mediastinal fracture. The mediastinal abscess resulted from the he- matogenous spread of Staphylococcus aureus to a hematoma that might have been caused by a closed blunt chest trauma incurred during sumo wrestling exercises.

关键词： Mediastinal abscess Staphylococcus aureus Sumo wrestler Chest trauma

Expression of Interleukin-11 and Interleukin-11 receptor a in human colorectal adenocarcinoma; Immunohistochemical analyses and correlation with clinicopathological factors

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World Journal of Gastroenterology 2006年第2期12卷 317-321页

作者： Kazuyuki Yamazumi Toshiyuki Nakayama Takafumi Kusaba Chun Yang Wen Ayumi Yoshizaki Yuichi Yakata Takeshi Nagayasu ichiro Sekine Department of Molecular Pathology Nagasaki University Graduate School of Biomedical Sciences 1-12-4 Sakamoto Nagasaki 852-8523 Japan Division of Surgical Oncology Department of Translational Medical Sciences Nagasaki University Graduate School of Biomedical Sciences 1-12-4 Sakamoto Nagasaki 852-8523 Japan Department of Digestive Disease Nanjing Drum Tower Hospital Medical School of Nanjing University Nanjing 210008 Jiangsu Province China

AIM： There is strong evidence that interleukin-11 （IL-11） is involved in the regulation of tumor progression, cellular growth and differentiation. Recently, interleukin-11 receptor （IL-11R） has been detected on some cancer cells. In this study, we investigated the expression of IL-11 and IL-11R in colorectal adenocarcinoma. METHODS： To elucidate the involvement of IL-11 and IL-11Rα in human intestinal adenocarcinomas, we examined 115 cases of surgically resected human colonic adenocarcinoma and 11 cases of adenoma by immunohistochemistry and Western blotting. RESULTS： Among 115 cases of adenocarcinoma, 100 cases （87.0%） showed positive staining in the cytoplasm of carcinoma cells for the IL-11, and 87 cases （75.6%） were positive for the IL-11Ra. Six cases （54.5%） and four cases （36.4%） of 11 adenomas were positive for IL-11 and IL-11Ra, respectively. The expression of IL- 11Ra correlated with the histological differentiation （P=0.033503）, the depth of tumor invasion （P= 0.006395）, Dukes＇ classification （P= 0.015648） and lymphatic invasion （P= 0.003865）. However, the expression of IL- 11Rα was not correlated with the venous invasion and the presence of lymph node metastasis. The expression of IL-11 was not correlated with any clinicopathological factors. In Western blot analysis, two human colorectal carcinoma cell lines and four tissues of surgically resected human carcinoma expressed both IL-11 and IL-11Rα proteins. CONCLUSION： IL-11 and IL-11Rα are highly expressed in human colorectal adenocarcinoma and the IL-11Rα expression is correlated with clinicopathological factors, These findings suggest that the expression of IL-11Rα is an important factor for the invasion of human colorectal adenocarcinoma.

关键词： IL-11, IL-11 receptor α Colorectal cancer

Gene-activated matrix harboring a miR20a-expressing plasmid promotes rat cranial bone augmentation

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Regenerative Biomaterials 2021年第2期8卷 34-42页

作者： Rena Shido Yoshinori Sumita Masahito Hara Mayumi Iwatake Shun Narahara Mayumi Umebayashi Kei-ichiro Miura Yukinobu Kodama Izumi Asahina Department of Regenerative Oral Surgery Unit of Translational MedicineNagasaki University Graduate School of Biomedical Sciences1-7-1 SakamotoNagasaki 852-8588Japan Basic&Translational Research Center for Hard Tissue Disease Unit of Translational MedicineNagasaki University Graduate School of Biomedical Sciences1-7-1 SakamotoNagasaki 852-8588Japan Laboratory of Craniofacial Tissue Engineering and Stem Cells Faculty of DentistryMcGill University3640 University StreetM43MontrealQuebec H3A 2B2Canada Department of Hospital Pharmacy Nagasaki University Hospital1-7-1 SakamotoNagasaki 852-8501Japan

Gene-activated matrix(GAM)has a potential usefulness in bone engineering as an alternate strategy for the lasting release of osteogenic proteins but efficient methods to generate non-viral GAM remain to be *** this study,we investigated whether an atelocollagen-based GAM containing naked-plasmid(p)DNAs encoding microRNA(miR)20a,which may promote osteogenesis in vivo via multiple pathways associated with the osteogenic differentiation of mesenchymal stem/progenitor cells(MSCs),facilitates rat cranial bone ***,we confirmed the osteoblastic differentiation functions of generated pDNA encoding miR20a(pmiR20a)in vitro,and its transfection regulated the expression of several of target genes,such as Bambi1 and PPARc,in rat bone marrow MSCs and induced the increased expression of ***,when GAMs fabricated by mixing 100 ll of 2%bovine atelocollagen,20mg b-TCP granules and 0.5mg(3.3 lg/ll)AcGFP plasmid-vectors encoding miR20a were transplanted to rat cranial bone surface,the promoted vertical bone augmentation was clearly recognized up to 8 weeks after transplantation,as were upregulation of VEGFs and BMP4 expressions at the early stages of ***,GAM-based miR delivery may provide an alternative non-viral approach by improving transgene efficacy via a small sequence that can regulate the multiple pathways.

关键词： gene-activated matrix in vivo gene transfer bone augmentation atelocollagen mir20a