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Correction: Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry. Heart Vessels 2023; 38:412. [PMID: 36508013 DOI: 10.1007/s00380-022-02218-5] [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: 12/14/2022]
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Osteoporosis medication after fracture in older adults: an administrative data analysis. Osteoporos Int 2021; 32:1245-1246. [PMID: 33914105 DOI: 10.1007/s00198-021-05973-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 04/19/2021] [Indexed: 12/31/2022]
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3
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Concrete with high-purity volcanic glass fine powder manufactured from pyroclastic deposit. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2614-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
AbstractVolcanic deposits, which are pozzolanically reactive, have long been known to improve the durability of concrete. Nevertheless, it has also been pointed out that the use of a natural pozzolan as a supplementary cementitious material (SCM) can pose problems of low workability and slow strength development. Also, in addition, its composition and physical properties have large variety and variability. We have been conducting studies on the total utilization of volcanic deposits for applications suitable for respective properties by classifying them by floating speed difference and particle diameter. It is reported that sorting out particles less than 2.4 g/cm3 by dry gravity classification and removal of smaller clay fraction by dust collector is technically effective to recover high purity volcanic glass from pyroclastic flow deposits called “Ito-Shirasu”, which is a local name for pyroclastic flow deposits in Japan. In this study, concrete containing high-purity volcanic glass powders with different finenesses are investigated regarding fresh properties, strength development, chloride ion penetration and CO2 reduction. As a result, it was found that volcanic glass powders made an excellent contribution to the improvement of flowability comparable to fly ash, the enhancement of strength comparable to silica fume, and the restraint of chloride ion penetration. Volcanic glass powders can also contrbute to the reduction of CO2 emission because the content of Portland cement can be significantly reduced to obtain the same strength compared to concrete with 100% Portland cement. This study provides a possibility to produce high performance SCMs in volcanic regions worldwide from volcanic ejecta by sorting out a high purity volcanic glass by the same method.
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348 Homeostatic functions of dermokine in skin barrier and innate immunity. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.350] [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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P3565Clopidorel-based antiplatelet therapy is not enough for stent patency in patients undergoing femoropopliteal arterial endovascular interventions. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3565] [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: 11/12/2022] Open
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Transforming Growth Factor Betal and Beta2 Induce Down-Modulation of Thrombomodulin in Human Umbilical Vein Endothelial Cells. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1653873] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryTo investigate the effects of transforming growth factor-betas (TGF-βs) on endothelial anticoagulant activity, we assayed thrombomodulin (TM) activity and antigen levels of human umbilical vein endothelial cells (HUVECs) incubated with TGF-βs in vitro. TGF-β1 suppressed surface TM activity and surface TM antigen levels maximally 12 h after incubation in dose-dependent manners. TGF-β2 was almost equipotent with TGF-β1 for the suppression of them. Both TGF-βs suppressed total TM antigen level in HUVECs, and the time course of the suppression was similar to that of the cell surface TM antigen level. The maximal reductions of TM mRNA levels by TGF-βs were observed at several hours ahead of those observed in both surface and total TM antigen levels, suggesting that the TGF-β-mediated suppression of TM antigen of HUVECs is primarily regulated at the TM mRNA level. Our present work suggests that the down-modulation of TM level induced by TGF-βs in HUVECs contributes in vivo to promoting the thrombogenesis either at the sites of injury of vessel walls, such as atherosclerotic lesions where TGF-β1 is released from platelets, smooth muscle cells and monocytes, or at neovascular walls in tumors secreting TGF-β2.
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Microbes Culture System Using Cellulose Tubes and Photocatalyst-Coated Glass Balls. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:5741-5744. [PMID: 30441640 DOI: 10.1109/embc.2018.8513570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Currently, microbes are utilized in many fields, such as medicine, food and environment etc. For more application of microbes, we need a new culture system, which can culture target microbes in large quantities at low cost. Thereupon, we propose a culture system using cellulose tubes. Target microbes are encapsulated inside the cellulose tubes, where they acquire nutrients and oxygen through nano pores of the tubes and are protected from competitive microbes even in open environment. To further increase the amount of oxygen and nutritions available for the target microbes, we propose photocatalyst-coated glass balls (PCGB) to sterilize competing microbes outside the tubes. We experimentally verified the effectiveness of the proposed culture system by culturing Coryne gultamicum as the target microbes.
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In-situ X-ray nano-CT System for Polymer Electrolyte Fuel Cells under Operating Conditions. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/849/1/012022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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9
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Micro-tube mass production device for microbial culture. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2016:481-484. [PMID: 28268376 DOI: 10.1109/embc.2016.7590744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This paper describes mass production system of micro-tubes for microbial culture in an open environment. Microbes are used in many fields, such as food, medicine, environmental and energy. We proposed a microbe culture system using hydrogel micro-tubes, which can protect the target microbes inside from competitive microbes outside of the tubes while allow oxygen and nutrition to diffuse through. The hydrogel micro-tubes can be produced by a microfluidic device, which can precisely control the flow and therefore, the tube geometry. For practical applications of the micro-tube-based microbial culture, one of the biggest challenges is the scale-up of the micro-tube-based culture system, or mass production of the tubes. We developed a fluidic system that can produce multiple micro-tubes in parallel. We characterized the mass-produced micro channels and verified the effectiveness of the system.
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A simple method for micropatterning nanofibrous hydrogel film. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2017; 2016:145-148. [PMID: 28268300 DOI: 10.1109/embc.2016.7590661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This paper propose a new fabrication process for micropatterning a nanofibrous thin film made of bacterial cellulose(BC). BC is a hydrogel produced by specific bacteria and composed of pure cellulosic nanoflbers exhibiting 3D network structure. Such nanofibrous structure is found to be appropriate for adhesion of anchorage-dependent cells. Furthermore, BC shows high biocompatibility and mechanical toughness. Thus, the microfabrication technique for BC broadens potentials for applications. In this study, we report a new method for micropatterning BC film with feature resolution comparable with photolithography technology.
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F-166NEW HORIZON OF SURGICAL TREATMENTS IN PATIENTS WITH PULMONARY METASTASES: COMBINATION WITH RADIOFREQUENCY ABLATION. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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SAT0633-HPR Social Support May Be Important for Improving Patient Satisfaction and Health Status in Patients with Rheumatoid Arthritis Treated with Biologics. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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13
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SAT0632-HPR The Efficacy of Biologics on Health Status Including Psychological Status, Self-Efficacy and Patient Satisfaction in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Toad's egg-like cultivation process for forming microcarriers from nanofibrous hydrogel. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2015:5900-3. [PMID: 26737634 DOI: 10.1109/embc.2015.7319734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This paper proposes a new method for generating microcarries from bacterial cellulose (BC). BC, which is produced by specific bacteria, is a hydrogel composed of a three dimensional network structure formed by cellulose nanofibers. BC as an ECM-like nanofibrous material exhibits an excellent environment for cellular adhesion. Moreover, BC has a high biocompatibility and mechanical strength. From these properties, BC is expected to be applied for microcarriers, which is used for cultivating anchorage-dependent cells. Then, we developed a microfabrication process to create BC microcarriers by using gelatin microspheres as sacrificial architectures. In addition, the monodispersity of the formed BC microcarreirs was investigated.
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Development of hydrogel microtubes for microbe culture in open environment. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2015:5896-9. [PMID: 26737633 DOI: 10.1109/embc.2015.7319733] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This paper describes a microbe culture system in an open environment using hydrogel microtubes. In recent years, oil production microbes, such as Aurantiochytrium, have been found and are studied to produce fuels of new age instead of fossil fuels. Biomass production by microbes is promising, where scale-up, collection of the products and competition against other microbes are the most important challenges. Here, we propose to use hydrogel microtubes to encapsulate, culture, and protect microbes. The tubes can be micro- and mass-fabricated. They allow oxygen and nutrition to go through while they prevent competitive microbes from intruding inside. The microbes and byproducts can be collected together with the tubes. In this paper, we demonstrate the proof-of-concepts experiments: we fabricated hydrogel micro tubes and cultured Coryne glutamicum which produce lactic acid inside the tubes. The microbes were increased inside the tubes and protected even when competitive microbes existed in the culture media. Furthermore, we demonstrated how to collect microbes inside the tubes.
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FRI0631-HPR Patient Satisfaction is Correlated with Role, Psychological State and Patient Global Assessment in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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AB1216-HPR A Study of Possible Correlations of Sleep Disturbance with Disease Activity, Psychological State and Health Status in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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18
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Purification of a Single Major Form of Microsomal Cytochrome P-450 from Tulip Bulbs (Tulipa gesnerianaL.). ACTA ACUST UNITED AC 2014. [DOI: 10.1080/00021369.1985.10867084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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THU0580-HPR Psychological Remission May BE Effective to Attain Remission of Boolean-Based Definition of Patient Global Assessment in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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THU0579-HPR Psychological State and Health Status Account for the Discrepancy between Patient Global Assessment and Evaluator Global Assessment in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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SAT0126 Correlation of Sleep Disturbance with Disease Activity, Psychological State, Self-Efficacy and Quality of Life in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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75 Efficacy of inhaled antibiotics in CF patients with Pseudomonas aeruginosa (Pa) infection: a network meta-analysis (NMA). J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60211-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Characterization of as-synthesized mesoporous silica using NMR and solid-state fluorescence spectroscopy. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50135-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Hardness profile improvement of plasma nitrided high speed steel by glow discharge heating. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/174951411x13203192450304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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25
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Post-infarct administration of erythropoietin-encapsulated liposomes with Sialyl Lewis X (SLX) but not without SLX repairs infarcted myocardium in rabbits. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4189] [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: 11/14/2022] Open
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Post-infarct treatment with microRNA145 reduces myocardial infarct size through acceleration of myocyte autophagy in rabbits. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5049] [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: 11/15/2022] Open
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27
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THU0589 Correlation of Depression with Patient Global Assessment, Sleep Disturbance and Health Status in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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28
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AB0822-HPR Correlation of psychological state with patient global assessment in patients with rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.3144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
BACKGROUND Although dermokine-β, a glycoprotein expressed in epithelial cells, does not have significant homology to other proteins, its carboxyl-terminal domain shares a high pI value with many cytokines, suggesting similar functions. OBJECTIVE To better understand the biology of dermokine, we here determined its localization under pathological conditions and examined factors that regulate its expression. METHODS We generated an anti-human dermokine-β/γ monoclonal antibody cross-reacting with the mouse protein. Using this antibody, immunohistological staining and Western blotting of dermokine-β/γ were performed with various tissue samples. RESULTS Although human dermokine-β/γ was expressed in almost all granular layers, upper spinous layers of the skin were also stained with anti-dermokine-β/γ antibody in inflammatory skin disorders. Dermokine-β/γ was expressed in keratoacanthoma and a part of well-differentiated squamous cell carcinoma (SCC). However, dermokine-β/γ was not detected in poorly differentiated SCC or tumours derived from non-keratinocytes. In mice, dermokine-β/γ-expressed keratinocytes were increased in models of contact hypersensitivity, ultraviolet-irradiated skin injury and wound healing. Consistent with expanded distribution in inflammatory skin diseases, proinflammatory cytokines such as interleukin-1β, interleukin-12, and tumour necrosis factor-α augmented dermokine-β/γ expression in cultured human keratinocytes. In contrast, growth factors including epidermal growth factor, insulin-like growth factor-I, keratinocyte growth factor and transforming growth factor-α significantly reduced dermokine expression. CONCLUSION These results provide novel insights into the physiological and pathological significance of dermokine in the epidermis.
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Effects of liposome-encapsulated clodronate on chlorhexidine gluconate-induced peritoneal fibrosis in rats. Nephrol Dial Transplant 2011; 26:3143-54. [DOI: 10.1093/ndt/gfr068] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
ABSTRACTThe influence of the strain hardening coefficient,γ,and the strain rate sensitivity exponent, m, on the onset and growth of necking has been pointed out in many models about plastic instability controlled by the mechanical properties of materials. In this paper, the instability parameter I (=(l-γ-m)/m) proposed by Hart is used to relate the values of m (=∂lnσ/∂lnέ) and γ (=∂σ/(σ·∂ε)) for some superplastic aluminium alloys. These values of m and γ were calculated from the load-elongation curve at various strain-rates in constant strain-rate tests with periodic m determinations by strain-rate departures of small magnitude. It will be shown that the strain hardening due to grain growth contributes to an increase in the stability of plastic deformation during superplastic flow. However the decrease of m due to dynamic grain growth with strain causes superplastic deformation to be unstable near the onset of fracture. The transition of I values from negative to positive coincides with a decrease in m value and flow stress.It is concluded that the development of necks can be characterized by an instability parameter I which include the effect of strain hardening caused by strain induced grain growth.
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Abstract
ABSTRACTRecent advances in the technologies of powder metallurgy lead to the development of some superplastic aluminium alloys containing a deliberate addition of a large amount of Zr and /or Cr and Mn that exhibit the high strain rates superplasticity. For a few alloy systems, the large elongation more than 500% has been observed over the strain rates of 1×10−1s−1, which rates are two or three orders of magnitude faster than those at which superplasticity is found in conventional superplastic aluminium alloys produced by ingot metallurgy. The high strain-rates superplasticity obtained in both type of fully static recrystallized and dynamic recrystallized P/M aluminium alloys. The decreasing of initial size of grains and/or sub-grains leads to the increasing the strain-rates for superplastic flow in both types of alloys. The refinement of grains or sub-grains size is one of necessary and important to obtain the high strain-rates superplasticity.
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Nanoparticle formation from probucol/PVP/sodium alkyl sulfate co-ground mixture. Int J Pharm 2009; 376:169-75. [DOI: 10.1016/j.ijpharm.2009.04.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 04/21/2009] [Accepted: 04/22/2009] [Indexed: 10/20/2022]
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Adsorption state of naphthoic acids on folded sheets mesoporous materials with different pore sizes. J Drug Deliv Sci Technol 2009. [DOI: 10.1016/s1773-2247(09)50083-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
BACKGROUND The clinical phenotype manifest by patients with factor VII (FVII) deficiency correlates poorly with that predicted by laboratory tests. Despite its importance, there are no data on the variability of inter-laboratory determinations of low to very low plasma FVII activity (FVII:C). METHODS We distributed three FVII-deficient plasma samples, prepared by immunoaffinity chromatography, to 58 laboratories in Japan. All samples were assayed using standardized reference plasma as a calibrator. Recombinant thromboplastin was also supplied as a common reagent. RESULTS In the case of sample A, which had a very low FVII:C, the use of standardized reference plasma and thromboplastin, lowered the variability of inter-laboratory measurements, when compared with the variability observed when samples were assayed using the respective laboratory's routine method. CONCLUSIONS The data obtained indicated that results for samples with a very low FVII:C were greatly influenced by the number of plasma dilutions used in constructing a standard activity curve, and also by the type of calibrator and thromboplastin. Such variability was not seen for samples with moderate FVII:C. We conclude that it is necessary to develop a more sensitive and accurate FVII:C measurement system for the diagnosis and treatment of FVII deficiency.
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Irinotecan (CPT-11) in the treatment of mycosis fungoides. Br J Dermatol 2005; 153:1086-8. [PMID: 16225643 DOI: 10.1111/j.1365-2133.2005.06930.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Japanese collaborative study for fibrinogen assay: variability of the fibrinogen assay between different laboratories does not improve when a common calibrator is used. ACTA ACUST UNITED AC 2005; 27:177-83. [PMID: 15938723 DOI: 10.1111/j.1365-2257.2005.00686.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several national and local external quality assurance schemes have been developed to improve the plasma fibrinogen assay in Japan over the past 30 years. Now most commercial calibrant plasma may be calibrated against an International Standard preparation, in order to achieve agreement of results obtained by different laboratories. However, we have never achieved satisfactory results, according to an external quality control survey regarding the fibrinogen assay. Therefore, we distributed two kinds of fibrinogen standards to be used as common calibrators, along with three plasma samples, among 183 general laboratories in Japan. The results of this collaborative study showed that the assigned value for the commercially available calibrators remained problematic. Furthermore, it was concluded that the between-laboratory variability could not be improved beyond a certain degree of standardization, even if a common calibrator was used for the Clauss-derived assay carried out by an automatic coagulometer.
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Identification of a novel gene family, paralogs of inhibitor of apoptosis proteins present in plants, fungi, and animals. Apoptosis 2005; 10:471-80. [PMID: 15909109 DOI: 10.1007/s10495-005-1876-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Only few orthologs of animal apoptosis regulators have been found in plants. Recently, the ectopic expression of mammalian inhibitor of apoptosis proteins (IAPs) has been shown to affect plant programmed cell death. Here, we identified two novel proteins homologous to Arabidopsis thaliana IAP-like protein (AtILP) 1 and 2 by applying an improved motif searching method. Furthermore, homologs of AtILP1 were found to occur as a novel gene family in other organisms such as fungi and animals including Homo sapiens (HsILP1). Like baculovirus IAP repeats (BIRs) in IAPs, ILPs contain two highly conserved BIR-like domains (BLDs) with a putative C2HC-type zinc finger. Phylogenetic analyses indicated that ILPs are putative paralogs of IAPs. Homology modeling revealed that the three-dimensional structure of BLD in HsILP1 is similar to that of BIR. Transient expression of HsILP1 resulted in inhibition of etoposide-induced apoptosis in HEK293 and HeLaS3 cells. These findings suggest that ILPs are conserved in a wide range of eukaryotes including plants, and that their functions are closely related to those of IAPs.
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Role of resistant Drh1 locus in chemical carcinogen-induced hepatocarcinogenesis in rats: Analysis with a speed congenic strain. Cancer Sci 2005; 96:164-9. [PMID: 15771619 DOI: 10.1111/j.1349-7006.2005.00028.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The DRH is an inbred rat strain established by selective mating of the 3'-Me-DAB resistant progeny of closed colony Donryu rats over 20 generations. Genetic analysis shows that two semidominant QTLs, Drh1 and Drh2, are responsible for strong resistance to chemical-induced hepatocarcinogenesis in DRH strain rats. To evaluate the effect of the single Drh1 locus on various stages of liver carcinogenesis, we constructed a speed congenic strain DRH.F344-Drh1 by transferring a susceptible Drh1 allele of F344 to DRH rats by marker-assisted backcrossing. The DRH.F344-Drh1 rats had a approximately 43 cM segment of chromosome 1 bearing Drh1 but the Drh2 was of the DRH allele. After oral administration of 3'-Me-DAB for 8 weeks, DRH.F344-Drh1 had as many enzyme altered foci as F344, whereas the quantitative parameters of fibrosis, enzyme altered foci, GST-P expression and proliferation of liver cells in DRH.F344-Drh1 rats were intermediate between F344 and DRH. In the liver of carcinogen-fed DRH rats, there was intensive apoptosis as detected by TUNEL stain, but not in the liver of F344 and DRH.F344-Drh1 rats. Injection of lead nitrate (100 micromol/kgB.W) induced a wave of liver cell proliferation, as seen by BrdU uptake within a few days in F344 and DRH.F344-Drh1 rats, but not in DRH rats. Instead, there were numerous TUNEL-positive nuclei in the DRH liver after lead nitrate injection. Apparently, the hepatocytes were removed by apoptosis during transition from G0 to G1. The major role of Drh1 is effective removal of the hepatocytes newly recruited to proliferate after chemical injury. Resistance to preneoplastic lesions in DRH rats may well be based on similar mechanism.
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Characterization of hypervariable region in hepatitis C virus envelope protein during acute and chronic infection. Arch Virol 2005; 150:883-98. [PMID: 15662481 DOI: 10.1007/s00705-004-0470-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Accepted: 11/19/2004] [Indexed: 11/24/2022]
Abstract
Hepatitis C virus (HCV) causes persistent infection in most patients. To clarify the mechanisms underlying establishment of this persistent infection, nucleotide sequences of the E1/E2 region were characterized in 5 patients with acute and chronic HCV infection. We used direct DNA sequencing methods to identify the major sequence of HCV in each patient. Each HCV genome displayed a high frequency of nucleotide sequence variation in the hypervariable region (HVR) of E2. However, patient-specific conserved nucleotide sequences were identified in the E1/E2 region during the course of infection and conserved the higher-order protein structure. In the acute phase HCV infection, amino acid substitution in HVR-1 as the monthly rate of amino acids substitution per site (%) between each point exceeded 10.2%. In the chronic phase HCV infection, a significantly lower rate of amino acid substitution was observed in patients. The host immune responses to HVR-1 of each HCV isolates from all clinical courses were characterized using synthetic peptides and ELISA. One chronic patient serum (genotype 1b) did not react at all to its own HVR-1 peptides, however another patient (genotype 2b) reacted to all clinical course. These results indicated that HVR-1 might not always exhibit neutralizing epitopes of HCV infection. The sequence variation in HVR-1 may instead indicate the existence of various clones in acute phase infection and the adaption of these clones is thought to have caused persistent and chronic infection in each patient.
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[Lung cancer with ground glass opacity diagnosed by transbronchial lung biopsy using an ultrathin bronchoscope and virtual bronchoscopy]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2004; 57:1121-5. [PMID: 15553029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Although thoracic computed tomography (CT) screening indicated that there are many patients who have pulmonary shadow with ground glass opacity, it is sometimes difficult to obtain the appropriate specimens for histological diagnosis of such patients. We herein report a lung cancer patient with ground glass opacity who was diagnosed preoperatively by an ultrathin bronchoscope and virtual bronchoscopy. A 78-year-old female was admitted to our hospital due to bacterial pneumonia. At the admission, CT showed another abnormal small shadow in her right middle lobe. Since the shadow was not visible by fluoroscopy, we reconstructed the images of virtual bronchoscopy using the data obtained by multidetector CT. The location of the shadow was determined in the peripheral area of a dorsal branch of right B4aialpha. Then the transbronchial lung biopsy using an ultrathin bronchoscope with simultaneous CT guidance was performed. The histological findings of the biopsy specimens revealed that the shadow was highly suspicious for malignancy. Therefore, the right middle lobectomy was conducted, and the tumor was diagnosed as an adenocarcinoma. An ultrathin bronchoscope with virtual bronchoscopy is useful to diagnose a pulmonary shadow with ground glass opacity.
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Hedgehog and Fgf signaling pathways regulate the development of tphR-expressing serotonergic raphe neurons in zebrafish embryos. ACTA ACUST UNITED AC 2004; 60:275-88. [PMID: 15281067 PMCID: PMC2789256 DOI: 10.1002/neu.20023] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Serotonin (5HT) plays major roles in the physiological regulation of many behavioral processes, including sleep, feeding, and mood, but the genetic mechanisms by which serotonergic neurons arise during development are poorly understood. In the present study, we have investigated the development of serotonergic neurons in the zebrafish. Neurons exhibiting 5HT-immunoreactivity (5HT-IR) are detected from 45 h postfertilization (hpf) in the ventral hindbrain raphe, the hypothalamus, pineal organ, and pretectal area. Tryptophan hydroxylases encode rate-limiting enzymes that function in the synthesis of 5HT. As part of this study, we cloned and analyzed a novel zebrafish tph gene named tphR. Unlike two other zebrafish tph genes (tphD1 and tphD2), tphR is expressed in serotonergic raphe neurons, similar to tph genes in mammalian species. tphR is also expressed in the pineal organ where it is likely to be involved in the pathway leading to synthesis of melatonin. To better understand the signaling pathways involved in the induction of the serotonergic phenotype, we analyzed tphR expression and 5HT-IR in embryos in which either Hh or Fgf signals are abrogated. Hindbrain 5HT neurons are severely reduced in mutants lacking activity of either Ace/Fgf8 or the transcription factor Noi/Pax2.1, which regulates expression of ace/fgf8, and probably other genes encoding signaling proteins. Similarly, serotonergic raphe neurons are absent in embryos lacking Hh activity confirming a conserved role for Hh signals in the induction of these cells. Conversely, over-activation of the Hh pathway increases the number of serotonergic neurons. As in mammals, our results are consistent with the transcription factors Nk2.2 and Gata3 acting downstream of Hh activity in the development of serotonergic raphe neurons. Our results show that the pathways involved in induction of hindbrain serotonergic neurons are likely to be conserved in all vertebrates and help establish the zebrafish as a model system to study this important neuronal class.
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P-glycoprotein expression is associated with FDG uptake and cell differentiation in patients with untreated lung cancer. Nucl Med Commun 2004; 25:19-27. [PMID: 15061261 DOI: 10.1097/00006231-200401000-00004] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In vitro studies demonstrated that the accumulation of 2-deoxy-D-glucose was reduced in multidrug resistant cell lines. In animal study, it has been suggested that 2-[18F]fluoro-2-deoxy-D-glucose (FDG) may be a marker for multidrug resistance (MDR). The aim of this clinical study was to compare MDR characteristics by immunohistochemical assay with FDG uptake and investigate whether FDG is a marker for MDR in patients with untreated lung cancer. Forty-seven patients with 49 untreated lung cancers, who had undergone both preoperative FDG PET imaging and thoracotomy, were enrolled in this study. Before surgery, FDG PET was performed 40 min after injection, and standardized uptake values (SUVs) were obtained. Patients were classified into low-SUV (< or = 5) and high-SUV (> 5) groups. After surgery, the expression of P-glycoprotein (Pgp) was investigated by immunohistochemistry, and the lung cancer FDG uptake was analysed for possible association with Pgp expression. The strong intensity of Pgp immunoreactivity was seen only in the low-SUV group. The percentage of the Pgp positive area was significantly lower in the high-SUV group (21.7 +/- 13.4%) than in the low-SUV group (44.1 +/- 29.7%) (P = 0.015). In the high-SUV group, the percentage of Pgp positive area did not exceed 50%. In lung adenocarcinoma, the intensity of Pgp immunoreactivity and the percentage of Pgp positive area increased with degree of cell differentiation, while FDG uptake decreased with degree of cell differentiation. Bronchioloalveolar carcinoma, in particular, showed overexpression of Pgp and modest uptake of FDG. In conclusion, Pgp expression was found to be inversely related to FDG uptake in untreated lung cancer. Pgp expression correlated with the degree of cell differentiation in adenocarcinomas, whilst FDG uptake was inversely related to cell differentiation. FDG may be an in vivo marker for MDR in patients with untreated lung cancer.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Adenocarcinoma, Bronchiolo-Alveolar/diagnostic imaging
- Adenocarcinoma, Bronchiolo-Alveolar/metabolism
- Adenocarcinoma, Bronchiolo-Alveolar/pathology
- Adenocarcinoma, Bronchiolo-Alveolar/surgery
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/metabolism
- Cell Division
- Drug Resistance, Multiple
- Female
- Fluorodeoxyglucose F18/pharmacokinetics
- Gene Expression Regulation, Neoplastic
- Humans
- Lung Neoplasms/diagnostic imaging
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Lung Neoplasms/surgery
- Male
- Middle Aged
- Radionuclide Imaging
- Radiopharmaceuticals/pharmacokinetics
- Reproducibility of Results
- Sensitivity and Specificity
- Statistics as Topic
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Genetic resistance to chemical hepatocarcinogenesis in the DRH rat strain. Comp Med 2004; 54:373-7. [PMID: 15357316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The carcinogen-resistant inbred rat strain DRH established from closed-colony Donryu rats by use of selective brother-sister mating over 20 generations under continuous feeding of 3'-methyl-4-dimethylaminoazobenzene (3'-Me-DAB) maintains a highly resistant phenotype without carcinogen exposure for many years. We reported that the clonal expansion of preneoplastic glutathione S-transferase-P(GST-P)-positive foci induced by 3'-Me-DAB was less extensive in the liver of DRH rats than in the liver of susceptible strains, such as Donryu and F344, although levels of DNA adducts were comparable among these rats. Comparative studies of the events after initiation indicate that DRH rats are constitutionally less prone to cellular damage caused by continuous administration of 3'-Me-DAB than are parental Donryu rats. Consequently, the reduced growth response of the liver during the promotion stage may contribute to the low susceptibility to development of liver tumors. Genetic analysis of (F344 x DRH)F2 rats identified two quantitative trait loci, Drh1 on chromosome 1 and Drh2 on chromosome 4, which provide resistance to the development of GST-P-positive preneoplastic foci induced by 3'-Me-DAB during the early stage of its administration. The resistance to progression to hepatocellular carcinoma is affected solely by Drh2. These observations indicate that at least two genetic loci are critically involved in the steps leading to chemical hepatocarcinogenesis. The DRH rat is a useful experimental model with which to study genetic susceptibility and resistance to chemically induced liver cancers.
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Regulatory mechanism of glutathione S-transferase P-form during chemical hepatocarcinogenesis: old wine in a new bottle. Cancer Lett 2004; 209:155-63. [PMID: 15159017 DOI: 10.1016/j.canlet.2004.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2003] [Revised: 11/07/2003] [Accepted: 01/09/2004] [Indexed: 11/19/2022]
Abstract
The expression of glutathione S-transferase P-form (GST-P) is markedly up-regulated in the initial phase of chemical hepatocarcinogenesis. It is unlikely that a specific genetic change is associated with this common response to a variety of carcinogens. Here, we describe how GST-P gene expression is induced by carcinogenic treatment, focusing on the changes in the network of liver-enriched transcription factors, including CCAAT/enhancer-binding proteins. Although the balance of positive and negative transcription factors regulates the expression of the GST-P gene, additional factors such as the altered regulation of growth control may certainly be necessary for these cells to develop into preneoplastic foci. Furthermore, our genetic analyses on the tumor susceptibility of (F344 x DRH)F2 rats support the hypothesis that the formation of GST-P-positive lesions is required but is not directly associated with final malignant transformation.
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Exacerbation of cryoglobulinemia associated with intravenous radiographic contrast medium. Scand J Rheumatol Suppl 2004; 33:61-2. [PMID: 15124948 DOI: 10.1080/03009740310004081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Abstract
The DRH is an inbred rat strain highly resistant to chemically induced hepatocarcinogenesis. Two clusters of resistance loci Drh1 and Drh2 on chromosome 1 and 4 yield strong resistance to the formation of enzyme-altered foci and their progression. To evaluate the effect of enhanced cell proliferation in the progression stage, a partial hepatectomy (PH) was carried out in (DRH x F344)F1 rats 8 weeks after the start of 3'-Me-DAB administration. The incidence of liver cancer in the PH-F1 rats was equivalent to that in the F344 rats, although the number of tumors per rat was much lower. In contrast, the F1 rats without PH rarely developed cancers. Such modulation was not due to the loss of the resistance allele, since none of 18 hepatocellular carcinomas in PH-F1 rats showed allelic imbalance at Drhl and Drh2.
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4P-0930 Effect of diacylglycerol oil containing plant sterols on serum lipid parameters in patients taking pravastatin (10 mg/day). ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)91188-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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1P-0141 Estimation of atherogenic risk factors and complications in type 2 diabetic patients. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90215-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Minimal change nephrotic syndrome, lymphadenopathy and hyperimmunoglobulinemia after immunization with a pneumococcal vaccine. Clin Nephrol 2002; 58:68-72. [PMID: 12141410 DOI: 10.5414/cnp58068] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A 67-year-old female was admitted to our hospital with eruption and cervical lymphadenopathy which occurred one week after pneumococcal vaccination. Polyclonal hyperimmunoglobulinemia (IgG 6,620 mg/dl) and mild plasma cell proliferation (6.4%) in a bone marrow specimen were found, but a lymph node aspiration biopsy showed no specific findings. Normochromic and normocytic anemia with a positive direct Coombs test were also confirmed. Short-term intensive steroid therapy was given, but the systemic eruption and lymphadenopathy continued. About 4 months after vaccination, she suffered from edema in her face and legs and visual disturbance. When massive proteinuria (10.4 g/day) was found, she was admitted to our ward. A renal biopsy specimen showed a minor glomerular abnormality with mild interstitial plasmacytic infiltration. An abdominal CT scan showed hepatosplenomegaly and para-aortic lymphadenopathy. Uveitis was also found by ophthalmoscopy. These abnormalities completely disappeared after intensive steroid therapy including pulse therapy. On the basis of her clinical course and laboratory findings, it was suggested that minimal change nephrotic syndrome might be induced after vaccination, possibly due to hypersensitivity syndrome.
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