Extracellular Hemoglobin
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Fluid distribution kinetics during cardiopulmonary bypass
OBJECTIVE: The purpose of this study was to examine the isovolumetric distribution kinetics of crystalloid fluid during cardiopulmonary bypass. METHODS: Ten patients undergoing coronary artery bypass grafting participated in this prospective observational study. The blood hemoglobin and the serum albumin and sodium concentrations were measured repeatedly
Clinics. Publicado em: 2014-08
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2. Hemoglobina extracelular gigante de Glossoscolex paulistus: um extraordinário sistema supramolecular hemoproteico
Giant extracellular hemoglobins are considered the summit of complexity in systems that carry oxygen, constituting an extraordinary model system to the study of hemoproteins. This class includes the hemoglobin of the annelid Glossoscolex paulistus that presents high cooperativity, great oligomeric and redox stabilities and ability of oligomeric reassociation
Química Nova. Publicado em: 2011
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3. Thermal stability of the giant extracellular hemoglobin of Glossoscolex paulistus (HbGp): studies of the effects of the mediam pH iron oxidation state by differential of scanning microcalorimetry (DSC), optical absorption and circular dichroism (CD) spectroscopies / Estabilidade térmica da hemoglobina extracelular gigante de Glossoscolex paulistus (HbGp): estudos dos efeitos do pH do meio e do estado de oxidação do ferro por microcalorimetria diferencial de varredura (DSC), espectroscopia de absorção óptica e dicroísmo circular (CD)
A estabilidade térmica em função do pH para três formas da hemoglobina extracelular gigante do anelídeo Glossoscolex paulistus (HbGp), monitorada atraves de DSC, CD e absorção óptica, e estudada no presente trabalho. Estes estudos possibilitaram a determinação de parâmetros importantes do processo de desnaturação e dissociação da proteína oli
Publicado em: 2010
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4. Estudo da hemoglobina extracelular gigante de Glossoscolex paulistus (HbGp) por ultracentrifugação analítica e fluorescência em função do pH / Studeis of the giant extracellular hemoglobin of Glossoscolex paulistus (HbGp) by analytical ultracentrifugation and fluorencence as a function of pH
A hemoglobina extracelular gigante do anelídeo Glossoscolex paulistus (HbGp) é homológa à hemoglobina da Lumbricus terrestris (HbLt). Baseado nos estudos de MALDI-TOF-MS foi determinada a massa molecular (MM) das subunidades da HbGp. Entretanto, ainda não era possível propor o valor exato da MM para a HbGp íntegra, pois a estequiometria deste oligôme
Publicado em: 2010
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5. Interaction of hidrophilic porphyrins and extracellular hemoglobin with biomimetic models of biological membranes / Interação de porfirinas hidrofílicas e de hemoglobina extracelular com modelos biomiméticos de membrana biológica
In the first part of this work interactions of the cationic meso tetrakis (4-N-methilpyridil) porphyrin (TMPyP) and meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS4) in the free base forms with membrane model systems (ionic micelles, mixed micelles and phospholipids vesicles) in aqueous solutions, have been investigated by optical absorption, resonance lig
Publicado em: 2008
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6. Avaliação dos efeitos de um ativo dermocosmetico composto pelos extratos de Pfaffia paniculata e Ptychopetalum olacoides na prevenção e tratamento de desordens periorbitais / Evaluation of a dermocosmetic active composed by Pfaffia paniculata and Ptychopetalum olacoides associated extract in the prevention and treatment of periorbital disorders
Despite the frequency in which occurs, little has been written in scientific literature on the treatment of periorbital disorders (POD). POD are characterized by alterations in color and shape of the upper and lower eyelids, manifested by hyperpigmentation ("dark circles") and puffiness resulted by fat and fluid accumulation. It has been reported that darken
Publicado em: 2008
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7. Caracterização parcial das reações de fotooxidação e eletrooxidação do dipiridamol e das subunidades de hemoglobina extracelular / Partial caracterization of dipydidamole fotooxidation and eletrooxidation reactions and partial caracterization of extracellular hemoglobin subunits
Dipyridamole (DIP), 2,6-bis(dietanolamina)-4,8-dipiperidinapirimida-[5,4-d] pirimidina) is known for its vasodilating and antiplatelet aggregation activity, exhibiting also a potent antioxidant effect, strongly inhibiting lipid peroxidation. In the present work, the quenching of singlet molecular oxygen, O2(1Δg), by dipyridamole, RA47 and RA25 was anal
Publicado em: 2008
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8. Temperature and high pressure effect on thermodynamic of the extracellular hemoglobin dissociation / Efeito da temperatura e alta pressão hidrostática na termodinâmica da dissociação da hemoglobina extracelular
A hemoglobina extracelular de Glossoscolex paulistus (eritrocruorina) foi investigada com respeito ao efeito da temperatura na dissociação induzida por alta pressão hidrostática. O aumento de temperatura e pressão induziu o processo de dissociação, como observado pela significativa diminuição da intensidade de espalhamento de luz. Tais informações
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2007
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9. Desenvolvimento embrionário em ratas wistar prenhes submetidas ao ultra-som terapêutico de 3 MHz
Therapeutic ultrasound is widely used in different aesthetic treatment by young women, who can be irradiated during early gestation. Researches regarding the effects of therapeutic ultrasound on gestation present controversial results. Methodologies incompatible with clinical aspects are used and different methods and technics were employed. However none of
Publicado em: 2007
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10. Characterization of extracellular proteases produced by Xylella fastidiosa from citrus and grapevines. / Caracterização de proteases extracelulares produzidas por Xylella fastidiosa de citros e videira.
Xylella fastidiosa is a pathogenic bacterium found in several plants. These bacteria secrete extracellular proteases into the culture broth as visualized in sodium-dodecyl-sulfate polyacrylamide activity gels containing gelatin as a co-polymerized substrate. Three major protein bands were produced by strain X0 (citrus) with molar masses (MM) of 122, 84 and 6
Publicado em: 2005
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11. Iron acquisition from heme and hemoglobin by a Serratia marcescens extracellular protein.
Several pathogenic bacteria are able to use heme and hemoproteins as iron sources independent of siderophore production by mechanisms involving outer membrane heme-binding proteins and heme transport systems. Here we show that Serratia marcescens has such a property and we identify an extracellular heme-binding protein, HasA (for heme acquisition system), al
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12. A new type of hemophore-dependent heme acquisition system of Serratia marcescens reconstituted in Escherichia coli.
The utilization by Serratia marcescens of heme bound to hemoglobin requires HasA, an extracellular heme-binding protein. This unique heme acquisition system was studied in an Escherichia coli hemA mutant that was a heme auxotroph. We identified a 92-kDa iron-regulated S. marcescens outer membrane protein, HasR, which alone enabled the E. coli hemA mutant to