152 research outputs found

    微量薬物の代謝並びに酵素反応解析への質量分析の応用研究

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    取得学位:博士(薬学),学位授与番号:博乙第251号,学位授与年月日:平成14年9月30日,学位授与年:200

    Juvenile dermatomyositis (JDM) and severe pulmonary involvement: case report

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    Juvenile dermatomyositis (JDM) is an inflammatory, non-pustular disorder of skeletal muscles and skin. Other organs, such as the lungs, can be involved. Pulmonary complications are associated with high morbimortality rates and can develop in the acute phase of the disease. Due to its rarity, diagnosis difficulty and severity pulmonary involvement, we report the case of a 3-year-old girl with JDM and pulmonary involvement and evolution to death.A dermatomiosite juvenil (DMJ) é uma doença inflamatória não supurativa dos músculos esqueléticos e da pele.Outros órgãos podem estar envolvidos, como, por exemplo, os pulmões. As complicações pulmonares estão associadas a altas taxas de morbimortalidade e podem ocorrer na fase aguda da doença. Devido à raridade, dificuldade no diagnóstico e gravidade do acometimento pulmonar, relatamos o caso de uma menina de 3 anos com DMJ e envolvimento pulmonar que evoluiu para óbito.UNIFESP-EPM Departamento de PediatriaUNIFESP-EPM Departamento de PatologiaUNIFESP, EPM, Depto. de PediatriaUNIFESP, EPM Depto. de PatologiaSciEL

    Microscopic and ultrastructural evaluation of the saphenous vein endothelium for CABG prepared by the no touch technique

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    OBJECTIVE: Saphenous vein grafts (SV) used in coronary artery bypass grafting have a limited life and vein occlusion may be the final adverse effect. Efforts to develop new techniques to harvest the saphenous vein may improve the viability of the graft. METHODS: Twenty patients were randomly divided into two groups with the objective of evaluating the vascular endothelium. The No Touch (NT) technique consists in removing the saphenous vein with perivascular tissue. The conventional technique consists in harvesting with in situ removal of the perivascular tissue. The standard saphenous vein harvesting procedure used bridged incisions. Characteristics of the vein were considered. Evaluation of the endothelium was achieved by electron microscopy and histologic analysis using hematoxylin eosin staining. The Picrosirius and Masson Trichrome methods were used to analyze subendothelial collagen. RESULTS: Electron microscopy demonstrated that the NT Group had larger non-denudated endothelial areas as well as a smaller number of degraded cells. Histological analysis showed the form and integrity of the saphenous vein layers. A larger amount of collagen fibers were identified in the NT Group. CONCLUSIONS: The NT technique better preserves the saphenous vein endothelium suggesting a more viable graft in the long term.OBJETIVO: O enxerto de veia safena (VS) utilizado em revascularização miocárdica possui uma vida útil, sendo o estágio final a oclusão do vaso. Esforços em adquirir novas técnicas de coleta da VS podem possibilitar uma viabilidade maior do enxerto. MÉTODOS: Vinte pacientes foram randomizados e divididos em dois grupos com o objetivo de avaliação do endotélio vascular. A técnica no touch (NT) consiste em retirar o segmento de VS com o tecido perivascular. A técnica convencional consiste em retirar a VS, com remoção in situ do tecido perivascular e conseqüente vasoespasmo. Houve um padrão de retirada das VS com incisões longitudinais escalonadas. Características da VS foram consideradas. A avaliação do endotélio das VS foi realizada usando microscópio eletrônico (ME) pelo método de varredura e de transmissão. Cortes histológicos das VS foram corados em Hematoxilina-Eosina (HE). O colágeno subendotelial foi analisado pelos métodos de Picro-Sirius e Tricrômio de Masson. RESULTADOS: A ME evidenciou que o Grupo NT possui maiores áreas endoteliais não desnudadas, além de um menor número de células degradadas. A coloração em HE nos permitiu verificar a forma e a integridade das camadas das VS. Há um predomínio maior de fibras colágenas coradas no Grupo NT. CONCLUSÕES: A técnica NT permite uma melhor preservação endotelial da VS, sugerindo um enxerto mais viável em longo prazo.Escola Paulista de Medicina Universidade Federal de São Paulo (UNIFESP)Escola Paulista de Medicina Universidade Federal de São Paulo (UNIFESP) Departamento de Patologia InvestigativaUniversidade Federal de São Paulo (UNIFESP) Escola Paulista de Medicina Setor de Microscopia EletrônicaUniversidade Federal de São Paulo (UNIFESP) Escola Paulista de Medicina setor de Transplante Cardíaco da Disciplina de Cirurgia CardiovascularUNIFESP, EPM, EPM EPM, Depto. de Patologia InvestigativaEPM, Escola Paulista de Medicina Setor de Microscopia EletrônicaEPM, Escola Paulista de Medicina setor de Transplante Cardíaco da Disciplina de Cirurgia CardiovascularSciEL

    The effects of buoyancy on the critical heat flux in forced convection

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76972/1/AIAA-1993-575-151.pd

    Nanofluid impingement jet heat transfer

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    Experimental investigation to study the heat transfer between a vertical round alumina-water nanofluid jet and a horizontal circular round surface is carried out. Different jet flow rates, jet nozzle diameters, various circular disk diameters and three nanoparticles concentrations (0, 6.6 and 10%, respectively) are used. The experimental results indicate that using nanofluid as a heat transfer carrier can enhance the heat transfer process. For the same Reynolds number, the experimental data show an increase in the Nusselt numbers as the nanoparticle concentration increases. Size of heating disk diameters shows reverse effect on heat transfer. It is also found that presenting the data in terms of Reynolds number at impingement jet diameter can take into account on both effects of jet heights and nozzle diameter. Presenting the data in terms of Peclet numbers, at fixed impingement nozzle diameter, makes the data less sensitive to the percentage change of the nanoparticle concentrations. Finally, general heat transfer correlation is obtained verses Peclet numbers using nanoparticle concentrations and the nozzle diameter ratio as parameters
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