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Localized type 1 autoimmune pancreatitis superimposed upon preexisting intraductal papillary mucinous neoplasms

World Journal of Gastroenterology 2013年第47期19卷 9127-9132页

作者： Takahiro Urata Yoshiki Naito Yoshihiro Izumi Yoshi Takekuma Hiroshi Yokomizo Michiko Nagamine seiji fukuda Kenji Notohara Michio Hifumi Department of Gastroenterology Japanese Red Cross Kumamoto HospitalKumamoto 861-8520Japan Department of Pathology Kurume University School of MedicineKurume CityFukuoka 830-0011Japan Department of Surgery Japanese Red Cross Kumamoto HospitalKumamoto 861-8520Japan Department of Pathology Japanese Red Cross Kumamoto HospitalKumamoto 861-8520Japan Department of Anatomic Pathology Kurashiki Central HospitalKurashiki CityOkayama 701-01Japan

A 70-year-old woman was found to have 2 cystic lesions in the head of the pancreas on abdominal ultrasonography during a routine medical *** ultrasonography(EUS)and magnetic resonance cholangiopancreatography showed multilocular cysts in the head of the pancreas without dilation of the main pancreatic *** patient was followed-up semiannually with imaging studies for suspected branch duct-type intraductal papillary mucinous neoplasm(IPMN).At 3 years after initial presentation,hypoechoic lesions were observed around each pancreatic cyst by ***-weighted imaging showed high-intensity regions corresponding to these ***,a diagnosis of invasive carcinoma derived from IPMN could not be excluded,and subtotal stomach-preserving pancreaticoduodenectomy was *** macroscopic examination of the surgical specimen showed whitish solid masses in the head of the pancreas,with multilocular cysts within each ***,each solid mass consisted of inflammatory cells such as lymphocytes and plasma ***,immunochemical staining revealed immunoglobulin G4-positive cells,and many obliterating phlebitides were *** cysts consisted of mucus-producing epithelial cells and showed a papillary growth *** on these findings,we diagnosed multiple localized type 1 autoimmune pancreatitis occurring only in the vicinity of the branch ducttype IPMN.

关键词： Autoimmune pancreatitis Intraductal papillary mucinous neoplasm Immunoglobulin G4 Endoscopic ultrasonography Diffusion-weighted imaging

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Intraductal neoplasm of the intrahepatic bile duct: Clinicopathological study of 24 cases

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World Journal of Gastroenterology 2012年第28期18卷 3673-3680页

作者： Yoshiki Naito Hironori Kusano Osamu Nakashima Eiji Sadashima Satoshi Hattori Tomoki Taira Akihiko Kawahara Yoshinobu Okabe Kazuhide Shimamatsu Jun Taguchi Seiya Momosaki Koji Irie Rin Yamaguchi Hiroshi Yokomizo Michiko Nagamine seiji fukuda Shinichi Sugiyama Naoyo Nishida Koichi Higaki Munehiro Yoshitomi Masafumi Yasunaga Koji Okuda Hisafumi Kinoshita Masayoshi Kage Masamichi Nakayama Makiko Yasumoto Jun Akiba Hirohisa Yano Departments of Pathology Kurume University School of Medicine Kurume 830-0011 Japan Biostatistics Center Kurume University Kurume 830-0011 Japan Department of Diagnostic Pathology Kurume University Hospital Kurume 830-0011 Japan Division of Gastroenterology Department of Medicine Kurume University School of Medicine Kurume 830-0011 Japan Department of Pathology Omuta City General Hospital Omuta 836-8567 Japan Department of Pathology Asakura Medical Association Hospital Fukuoka 838-0069 Japan Department of Pathology National Hospital Organization Kyushu Medical Center Fukuoka 810-8563 Japan Department of Pathology Shin-Koga Hospital Tenjinkai 120 Tenjincho Kurume 830-0033 Japan Department of Pathology Kurume University Medical Center 155-1 Kokubumachi Kurume 839-0863 Japan Department of Surgery Japanese Red Cross Kumamoto Hospital Kumamoto 861-8520 Japan Department of Pathology Japanese Red Cross Kumamoto Hospital Kumamoto 861-8520 Japan Division of Surgery Saiseikai Kumamoto Hospital Kumamoto 861-4193 Japan Department of Pathology St Mary's Hospital Kurume 830-8543 Japan Department of Surgery Kurume University School of Medicine Kurume 830-0011 Japan

AIM: To investigate the clinicopathological features of intraductal neoplasm of the intrahepatic bile duct (INihB). METHODS: Clinicopathological features of 24 cases of INihB, which were previously diagnosed as biliary papillomatosis or intraductal growth of intrahepatic biliary neoplasm, were reviewed. Mucin immunohistochemistry was performed for mucin (MUC)1, MUC2, MUC5AC and MUC6. Ki-67, P53 and β-catenin immunoreactivity were also examined. We categorized each tumor as adenoma (low grade), borderline (intermediate grade), and malignant (carcinoma in situ , high grade including tumors with microinvasion). RESULTS: Among 24 cases of INihB, we identified 24 tumors. Twenty of 24 tumors (83%) were composed of a papillary structure; the same feature observed in intraductal papillary neoplasm of the bile duct (IPNB). In contrast, the remaining four tumors (17%) showed both tubular and papillary structures. In three of the four tumors (75%), macroscopic mucin secretion was limited but microscopic intracellular mucin was evident. Histologically, 16 tumors (67%) were malignant, three (12%) were borderline, and five (21%) were adenoma. Microinvasion was found in four cases (17%). Immunohistochemical analysis revealed that MUC1 was not expressed in the borderline/adenoma group but was expressed only in malignant lesions (P = 0.0095). Ki-67 labeling index (LI) was significantly higher in the malignant group than in the borderline/adenoma group (22.2 ± 15.5 vs 7.5 ± 6.3, P < 0.01). In the 16 malignant cases, expression of MUC5AC showed borderline significant association with high Ki-67 LI (P = 0.0622). Nuclear expression of β-catenin was observed in two (8%) of the 24 tumors, and these two tumors also showed MUC1 expression. P53 was negative in all tumors. CONCLUSION: Some cases of INihB have a tubular structure, and are subcategorized as IPNB with tubular structure. MUC1 expression in INihB correlates positively with degree of malignancy.

关键词： Intraductal biliary neoplasm Intraductal papillary neoplasm of the bile duct Intraductal tubular neoplasm of the bile duct Intraductal tubulopapillary neoplasm of the bile duct Mucin expression

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成纤维细胞体外培养结合串联质谱酰基肉碱谱诊断极长链酰基辅酶A脱氢酶缺陷症

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实用儿科临床杂志 2009年第20期24卷 1560-1562页

作者：李红马立燕马金海福田诚司长谷川有纪小林弘典山口清次宁夏医科大学附属医院儿科银川750004 日本岛根大学医学部小儿科日本岛根6938501

目的研究成纤维细胞体外培养结合串联质谱酰基肉碱谱分析对极长链酰基辅酶A脱氢酶(VLCAD)缺陷症的诊断价值。方法取健康对照标本6例,VLCAD缺陷症患儿标本9例(包括临床严重型2例,中间型3例及肌病型4例。男5例,女4例)。以棕榈酸(C16酸)为... 详细信息

目的研究成纤维细胞体外培养结合串联质谱酰基肉碱谱分析对极长链酰基辅酶A脱氢酶(VLCAD)缺陷症的诊断价值。方法取健康对照标本6例,VLCAD缺陷症患儿标本9例(包括临床严重型2例,中间型3例及肌病型4例。男5例,女4例)。以棕榈酸(C16酸)为培养溶媒底物在37℃培养箱中培养成纤维细胞株96h,应用串联质谱分析相应培养液中的酰基肉碱谱。结果与健康对照组比较,VLCAD缺陷症患儿乙酰肉碱(C2)明显降低,相应长链酰基肉碱异常增高,其中肉豆寇烯酰肉碱(C14)-酰基肉碱在临床严重型患儿中增高明显,月桂酰肉碱(C12)-酰基肉碱在临床轻型病例(包括中间型和肌病型)中增高更显著。长链酰基肉碱之和(ΣLC)及其与乙酰肉碱之比值(ΣLC/C2),VLCAD缺陷症患儿均明显高于健康对照。结论成纤维细胞体外特定条件培养结合串联质谱酰基肉碱谱分析,可诊断和鉴别VLCAD缺陷症及其临床分型,C12-酰基肉碱和C14-酰基肉碱可作为诊断标记。

关键词：极长链酰基辅酶A脱氢酶缺陷症串联质谱酰基肉碱成纤维细胞

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Cyborg and Bionic Systems:Signposting the Future

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Cyborg and Bionic Systems 2020年第1期2020卷 17-18页

作者： Toshio fukuda Beijing Institute of Technology China

Cyborg and Bionic Systems provides a much-needed forum for presenting research outcomes and insights in various fields concerning living-robotics hybrid *** research efforts within these fields are aimed at understanding,mimicking,and recapitulating natural principles and mechanisms of life,which have inspired numerous inventions and propelled technology advancements throughout *** cardiac pacemakers to artificial cochlea,a range of biomedical applications of cyborg and bionic system technologies has benefited *** organs,exoskeletons with neural interfacing,and brain-machine interfaces(BMIs)for neurological recovery have been applied to replace or repair lost *** example of inspiring achievements and the potential of cyborg and bionic system technologies to restore human capabilities is CYBATHLON,a championship for physically challenged people using assistive technologies which began in *** technologies are closely coupled with the“embodiment”issues which are essentially concerned with the psychological and sensing aspects of prosthetic arms and legs and even extra artificial limbs to augment our body for carrying out various tasks,a concept championed by a pioneering team led by Professor Harry Asada at MIT through a technology aptly named Supernumerary Robotic Limbs(SRL).

关键词： artificial replace skeleton

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Shot lining of magnesium alloy with hard powders

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Transactions of Nonferrous Metals Society of China 2010年第B07期20卷 708-712页

作者： Y.HARADA I.fukuda Graduate School of Engineering University of Hyogo Yatsushiro National College of Technology

To improve the surface properties,lining of magnesium alloys with hard powders by shot peening was carried out in order. The hard powders were tried to bond to the workpiece surface due to the collision of many *** order to fix the hard powders to the surface of the workpiece,the powders were set on an uneven *** easily facilitate fixing of powders,lining of the workpiece with the powder sandwiched between two aluminum foil sheets was also *** this experiment,a centrifugal shot peening machine with an electrical heater was *** workpieces were magnesium alloys AZ31B and AZ91D,and the hard powders were commercial cemented carbide,alumina,and *** joinability of hard powders near the lined surface was observed by a optical *** wear resistance was also evaluated by a wear *** hard powders were successfully bonded to the surface of workpieces by the shot lining *** results show that the present method is effective in wear resistance of the magnesium alloys.

关键词： shot peening surface treatment lining joining joinability magnesium alloy hardness wear resistance cemented carbide ceramic

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Regulation of Vascular Development by CLE Peptide-receptor Systems

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Journal of Integrative Plant Biology 2010年第1期52卷 8-16页

作者： Yuki Hirakawa Yuki Kondo Hiroo fukuda Department of Biological Sciences Graduate School of ScienceThe University of Tokyo

Cell division and differentiation of stem cells are controlled by non- cell-autonomous signals in higher organisms. The plant vascular meristem is a stem-cell tissue comprising procambial cells that produce xylem cells on one side and phloem cells on the other side. Recent studies have revealed that TDIF （tracheary element differentiation inhibitory factor）/CLE41/CLE44 peptide signal controls the procambial cell fate in a non-cell-autonomous manner. TDIF produced in and secreted from phloem cells is perceived by TDR/PXY, a leucine-rich repeat receptor kinase located in the plasma membrane of procambial cells. This signal suppresses xylem cell differentiation of procambial cells and promotes their proliferation. In addition to TDIF, some other CLE peptides play roles in vascular development. Here, we summarize recent advances in CLE signaling governing vascular development.

关键词： TDIF Regulation of Vascular Development by CLE Peptide-receptor Systems

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Prediction of Aerodynamic Noise in a Ring Fan Based on Wake Characteristics

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Journal of Thermal Science 2011年第2期20卷 144-149页

作者： Soichi Sasaki Masaharu fukuda Masao Tsujino Haruhiro Tsubota Faculty of Engineering Nagasaki University 1-14 Bunkyo-machi Nagasaki 852-8521 Japan Graduate School of Science and Technology Nagasaki University 1-14 Bunkyo-machi Nagasaki 852-8521 Japan Research Division Komatsu Ltd.1200 Manda Hiratsuka-shi Kanagawa 254-8567 Japan

A ring fan is a propeller fan that applies an axial-flow impeller with a ring-shaped shroud on the blade tip side. In this study, the entire flow field of the ring fan is simulated using computational fluid dynamics (CFD); the accuracy of the CFD is verified through a comparison with the aerodynamic characteristics of a propeller fan of current model. Moreover, the aerodynamic noise generated by the fan is predicted on the basis of the wake characteristics. The aerodynamic characteristic of the ring fan based on CFD can represent qualitatively the variation in the measured value. The main flow domain of the ring fan is formed at the tip side of the blade because blade tip vortex is not formed at that location. Therefore, the relative velocity of the ring fan is increased by the circumferential velocity. The sound pressure levels of the ring fan within the frequency band of less than 200 Hz are larger than that of the propeller fan. In the analysis of the wake characteristics, it revealed that Karman vortex shedding occurred in the main flow domain in the frequency domain lower than 200 Hz ; the aerodynamic noise of the ring fan in the vortex shedding frequency enlarges due to increase in the relative velocity and the velocity fluctuation.

关键词： Fan Vortex Aerodynamic Noise Wake Internal Flow

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Vertical impedance functions of pile groups under low-to-high loading amplitudes:numerical simulations and experimental validation

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Earthquake Engineering and Engineering Vibration 2023年第3期22卷 647-666页

作者： Usama Zafar Chandra Shekhar Goit Masato Saitoh Riku fukuda School of Science and Engineering Saitama University255 Shimo-OkuboSaitamaJapan

Piles in a group experience additional displacements in soil due to pile-to-pile interactions apart from those resulting from the external *** effect of these interactions determined assuming soil as an elastic and/or viscoelastic material on pile head impedance functions of the pile group is studied by relating the group stiffness to the static stiffness of a single ***,the prevailing elastic solutions may misestimate the resulting pile group response due to the lack of consideration for either soil(material)and/or soil-pile interface *** is well established that soil behaves nonlinearly under moderate-to-high loading amplitudes,and besides,the soil-pile interface nonlinearity can exist even at small loading *** study addresses the effects of these nonlinearities on the vertical impedance functions of a 3×3-pile group using numerical methods by direct analyses and superposition using pile-to-pile interaction *** numerical results are validated using scaled model tests under 1 g *** results highlight the overestimation of pile-to-pile interactions in the pile group when assuming elastic soil *** cases either by direct analyses or superposition approach involving soil and soil-pile interface nonlinearities agree well with the experimental pile group responses under close-to-elastic and nonlinear conditions.

关键词： impedance functions numerical simulations model-scale experiment superposition approach soil-pile interface nonlinearity

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Methods of induced pluripotent stem cells for clinical application

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World Journal of Stem Cells 2015年第1期7卷 116-125页

作者： Tomohisa Seki Keiichi fukuda Department of Cardiology Keio University School of Medicine Tokyo 160-8582 Japan Department of Emergency and Critical Care Medicine Keio University School of Medicine Tokyo 160-8582 Japan

Reprograming somatic cells using exogenetic gene expression represents a groundbreaking step in regenerative medicine. Induced pluripotent stem cells(i PSCs) are expected to yield novel therapies with the potential to solve many issues involving incurable diseases. In particular, applying i PSCs clinically holds the promise of addressing the problems of immune rejection and ethics that have hampered the clinical applications of embryonic stem cells. However, as i PSC research has progressed, new problems have emerged that need to be solved before the routine clinical application of i PSCs can become established. In this review, we discuss the current technologies and future problems of human i PSC generation methods for clinical use.

关键词： Induced pluripotent stem cells Cell reprogramming

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BAYESIAN IMAGE SUPERRESOLUTION AND HIDDEN VARIABLE MODELING

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Journal of Systems Science & Complexity 2010年第1期23卷 116-136页

作者： Atsunori KANEMURA Shin-ichi MAEDA Wataru fukuda ShinI SHII Graduate School of Informatics Kyoto University

Superresolution is an image processing technique that estimates an original high-resolutionimage from its low-resolution and degraded *** superresolution tasks,there have beenproblems regarding the computational cost for the estimation of high-dimensional *** are now being overcome by the recent development of fast computers and the developmentof powerful computational techniques such as variational Bayesian *** paper reviewsa Bayesian treatment of the superresolution problem and presents its extensions based on hierarchicalmodeling by employing hidden variables.

关键词： Bayesian estimation hidden variables image superresolution Markov random fields variational estimation.

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