Nobuyasu Takahashi

ORCID: 0000-0003-0950-5438
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Research Areas
  • Oral and gingival health research
  • Cancer-related gene regulation
  • Pancreatic function and diabetes
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Electron and X-Ray Spectroscopy Techniques
  • Pancreatic and Hepatic Oncology Research
  • Cancer Research and Treatments
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Gastrointestinal Tumor Research and Treatment
  • Advanced Electron Microscopy Techniques and Applications
  • Platelet Disorders and Treatments
  • Hedgehog Signaling Pathway Studies
  • Gastric Cancer Management and Outcomes
  • Trauma Management and Diagnosis
  • Cancer Cells and Metastasis
  • Gastrointestinal disorders and treatments
  • Testicular diseases and treatments
  • Sarcoma Diagnosis and Treatment
  • Cancer, Hypoxia, and Metabolism
  • Cardiac tumors and thrombi
  • Neuroendocrine Tumor Research Advances
  • Renal and related cancers
  • Epigenetics and DNA Methylation
  • Kruppel-like factors research
  • Monoclonal and Polyclonal Antibodies Research

University of Miyazaki
2013-2025

University of Fukui
2008

Regenerative Medicine Institute
2008

University of Miyazaki Hospital
2007

The University of Tokyo
2000

The lack of knowledge about the mechanism erythrocyte biogenesis through self-replication makes in vitro generation large quantities cells difficult. We show that transduction c-MYC and BCL-XL into multipotent hematopoietic progenitor derived from pluripotent stem gene overexpression enable sustained exponential glycophorin A+ erythroblasts, which we term immortalized (imERYPCs). In an inducible expression system, turning off enabled imERYPCs to mature with chromatin condensation reduced...

10.1016/j.stemcr.2013.10.010 article EN cc-by-nc-nd Stem Cell Reports 2013-12-01

Abstract Hepatocyte growth factor activator inhibitor-1 (HAI-1), encoded by the serine protease inhibitor Kunitz type 1 (SPINT1) gene, is a membrane-associated proteinase that potently inhibits variety of proteinases, including those are membrane bound. Although HAI-1/SPINT1 widely expressed epithelial cells and cancer cells, its functional role still unclear, particularly in cancer. Here, we show stable knockdown human pancreatic cell line SUIT-2 induces an elongated spindle-like morphology...

10.1158/0008-5472.can-08-3728 article EN Cancer Research 2009-02-18

The protein products of the Dickkopf (DKK) genes are antagonists Wnt glycoproteins, which participate in tumor development and progression by binding to frizzled receptors. In this study, expression DKK-1 was analyzed a panel 43 human cultured carcinoma cell lines. consistently significantly upregulated pancreatic Low level DKK-3 also seen. contrast, DKK-2 -4 not detectable most overexpression confirmed surgically resected cancer tissues, mRNA evaluated paired samples from cancerous...

10.1002/ijc.24865 article EN International Journal of Cancer 2009-08-27

GC33 is a recently developed monoclonal antibody against human glypican-3 (GPC3), which significantly upregulated in hepatocellular carcinoma (HCC). recognizes GPC3 ectodomain and shows significant antitumour activity vivo. Thus, humanized may be promising tool for treating HCC having cell surface expression.This study aims to determine the specificity, subcellular localization prognostic impact of immunoreactivity detected by clinical specimens.Immunohistochemical analysis was performed 194...

10.1111/j.1478-3231.2010.02359.x article EN Liver International 2010-10-21

SET domain bifurcated 1 (SETDB1), a histone H3K9-specific methyltransferase, is crucial for heterochromatin formation and intestinal homeostasis, but its role in ischemia-reperfusion injury (IRI) remains unclear. This study investigated changes SETDB1-mediated nuclear chromatin regulation epithelial cells (IECs) using an IRI mouse model. Jejunal samples were collected after 75 min of ischemia followed by 24 hr reperfusion. Sinefungin was administered as methyltransferase inhibitor....

10.1267/ahc.24-00061 article EN ACTA HISTOCHEMICA ET CYTOCHEMICA 2025-02-06

Recent advances in bio-medical research, such as the production of regenerative organs from stem cells, require three-dimensional analysis cell/tissue architectures. High-resolution imaging by electron microscopy is best way to elucidate complex architectures, but conventional method requires a skillful and time-consuming preparation. The present study developed survey for assessing architectures 30-µm-thick paraffin sections taking advantage backscattered low-vacuum scanning microscope. As...

10.1038/s41598-018-25840-8 article EN cc-by Scientific Reports 2018-05-04

Hepatoid adenocarcinoma (HAC) is a rare and aggressive gastrointestinal tract cancer that characterized by hepatic differentiation production of alpha-fetoprotein (AFP). Cisplatin mainly used to treat HAC, but the efficacy poor. Recently, histone deacetylase inhibitor, suberoylanilide hydroxamic acid (SAHA), was approved as an anticancer agent. In this study, we investigated effect SAHA in combination with cisplatin VAT-39 cells, newly established HAC cell line. Cell viability apoptosis were...

10.1267/ahc.18044 article EN ACTA HISTOCHEMICA ET CYTOCHEMICA 2019-02-22

Hepatoid adenocarcinoma is a rare gastrointestinal tumor and mostly reported in the stomach. Effective chemotherapy has yet to be developed improve poor prognosis. The present study was undertaken establish useful cell line derived from hepatoid adenocarcinoma, possibly leading new therapeutic strategy. human VAT-39 established metastatic lymph node of 69-year-old Japanese male patient with ampulla Vater. primary were composed cells exhibiting immunohistochemical reactivity for...

10.3892/ijo.2014.2282 article EN International Journal of Oncology 2014-01-28

Recent physiological studies have shown that the deep fascia has received much attention concerning clinical medicine; however, histological examination of not been well established. In this study, we aimed to clarify and visualize structure by taking advantage cryofixation techniques low-vacuum scanning electron microscopy. As a result, ultrastructural observations revealed three-dimensional stratification composed three layers: first superficial layer consisting collagen fibers extending...

10.1038/s41598-023-33479-3 article EN cc-by Scientific Reports 2023-04-18

Primary sarcoma is uncommon in the lung, and primary angiosarcoma exceedingly rare. We report a case of pulmonary left lung with emphasis on its growth pattern lung. A 48‐year‐old Japanese man was admitted to our hospital because dyspnea exertion. He subsequently found have pleural effusion. Computed tomography shows nodular lesion measuring 7 × 4 cm his Obstruction inferior lobar bronchus observed, endobronchial biopsy suggested angiosarcoma. Left pneumonectomy performed. On macroscopic...

10.1111/pin.12341 article EN Pathology International 2015-08-14

BACKGROUND Despite the beneficial effects of androgen ablation therapy in patients with prostate carcinoma, advancing cancer usually becomes hormone-refractory. We attempted to establish a new by controlling malignancy tumor cells through induction differentiation vitro. METHODS examined ability staurosporine induce human TSU-Pr1 into neuronal characteristics. RESULTS At low concentrations, remarkably suppressed proliferation without increasing dead cell number. treated 10−8 M began extend...

10.1002/1097-0045(20000901)44:4<328::aid-pros10>3.0.co;2-8 article EN The Prostate 2000-01-01

はじめに:開腹既往歴がなく体表に原因のない小腸イレウスでは原因の検索が困難で治療方法が遅れ腸切除になることがある.方法: 1998年1月から2004年12月までの7年間に当院で手術した小腸イレウス295例のうち鼠径ヘルニアなど体表面から確認できる例を除いた開腹既往歴のない小腸イレウス36例の手術時期と腸切除の有無について検討した.結果:原因としては索状物によるもの12例,閉鎖孔ヘルニア10例,内ヘルニア5例,食餌性イレウス4例,腸重積4例,小腸捻転1例で食餌性を除き全例CTで診断できた. 14例に腸切除を行い, 22例は腸切除を行わずにイレウスを解除できた.腸切群では発症から手術までの時間が有意に長く,入院後24時間以内の手術例が有意に少なかった.考察:開腹既往歴のない小腸イレウスに対しては,速やかにCTを含めた検査を行い24時間以内に手術することにより腸切除を回避できる可能性が示唆された.

10.3919/jjsa.67.741 article EN Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 2006-01-01

Abstract Immunocytochemistry visualizes the exact spatial location of target molecules. The most common strategy for ultrastructural immunocytochemistry is conjugation nanogold particles to antibodies as probes. However, conventional labelling requires time-consuming probe preparation and ultrathin sectioning cell/tissue samples. Here, we introduce an in situ involving nucleation immunoenzymatic products on universal paraffin/cryostat sections provide unique insight into development under...

10.1038/s42003-021-02246-3 article EN cc-by Communications Biology 2021-06-10

Abstract Background Clavicle fractures are common injuries, especially in young, active individuals. Operative treatment is recommended for completely displaced clavicle shaft fractures, and plate fixation stronger than the use of intramedullary nails. Few studies have reported on iatrogenic injuries to muscle attached during fracture surgery. The aim this study was clarify area insertion sites muscles Japanese cadavers using gross anatomy three-dimensional (3D) analysis. We also aimed...

10.1186/s12891-023-06266-4 article EN cc-by BMC Musculoskeletal Disorders 2023-03-03

The aim of this study was to clarify the mechanism leucocytapheresis (LCAP) in patients with RA.Protein profiles blood samples from two RA obtained via LCAP column inlet and outlet lines were analysed by two-dimensional fluorescence difference gel electrophoresis mass spectrometry. lactoferrin (LTF) levels peripheral circulating seven circuit then determined ELISA. Peripheral 14 exposed unwoven polyester fibre filters LTF level determined. In addition, morphological changes neutrophils after...

10.1093/rheumatology/keu219 article EN Lara D. Veeken 2014-06-04

はじめに: 十二指腸潰瘍穿孔に対する保存的治療の適応基準を明らかにすることを目的とした.方法: 1997年4月から2004年3月までに入院治療した十二指腸潰瘍穿孔症例80例を対象に, 治療法により保存的治療群と手術治療群に分類し比較した. 保存的治療の適応は全身状態良好でUS, CTで腹水が少量で限局しているものとし, 1999年以降はこれに上部消化管造影検査で造影剤の漏出がないか, あっても漏出距離が2cm以下で限局しているものという条件を加え, この適応基準の妥当性を検討した.結果: 80例中46例に保存的治療を行い, 5例で腹腔内膿瘍に対する経皮的ドレナージを, 6例で手術に変更し, 結局40例 (87%) に完遂できた. 保存的治療完遂群が有意に若く (p<0.01), 入院日数は平均14日で手術治療群の平均22日と比べ有意に短かった (p<0.01). 上部消化管造影による適応基準導入後は保存的治療の完遂率は向上し, 腹腔内膿瘍の合併も低下した.考察: 今回の十二指腸潰瘍穿孔に対する保存的治療の適応基準は, その完遂率を向上させ,...

10.5833/jjgs.39.643 article EN cc-by-nc The Japanese Journal of Gastroenterological Surgery 2006-01-01
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