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| Schneedorf,J.M.; Santoro,M.M.; Mares-Guia,M.. |
| Textile dyes bind to proteins leading to selective co-precipitation of a complex involving one protein molecule and more than one dye molecule of opposite charge in acid solutions, in a process of reversible denaturation that can be utilized for protein fractionation. In order to understand what occurs before the co-precipitation, a kinetic study using bovine ß-trypsin and sodium flavianate was carried out based on reaction progress curve techniques. The experiments were carried out using <FONT FACE="Symbol">a</font>-CBZ-L-Lys-p-nitrophenyl ester as substrate which was added to 50 mM sodium citrate buffer, pH 3.0, containing varying concentrations of ß-trypsin and dye. The reaction was recorded spectrophotometrically at 340 nm for 30 min, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flavianic acid; Tripsin inhibition; Textile dyes. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000900001 |
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| Maria-Engler,S.S.; Mares-Guia,M.; Correa,M.L.C.; Oliveira,E.M.C.; Aita,C.A.M.; Krogh,K.; Genzini,T.; Miranda,M.P.; Ribeiro,M.; Vilela,L.; Noronha,I.L.; Eliaschewitz,F.G.; Sogayar,M.C.. |
| In the 70's, pancreatic islet transplantation arose as an attractive alternative to restore normoglycemia; however, the scarcity of donors and difficulties with allotransplants, even under immunosuppressive treatment, greatly hampered the use of this alternative. Several materials and devices have been developed to circumvent the problem of islet rejection by the recipient, but, so far, none has proved to be totally effective. A major barrier to transpose is the highly organized islet architecture and its physical and chemical setting in the pancreatic parenchyma. In order to tackle this problem, we assembled a multidisciplinary team that has been working towards setting up the Human Pancreatic Islets Unit at the Chemistry Institute of the University of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human pancreatic islets; Pancreas; Extracellular matrix; Stem cells; Islet microencapsulation; Transplantation; Ductal cells. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000600001 |
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