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Hyaluronic acid altered

Ih Formation of carbonyl compounds and alterations of hyaluronic acid in lung Rabbit 26... [Pg.373]

This disease is of considerable interest in relation to oxypurine metabolism, although a wide variety of potential metabolic abnormalities have been said to be associated with it. In a review in 1961 Tickner (T4) asserted that there was evidence to support the postulate that psoriasis was associated with alterations in lipid, protein, carbohydrate, and mineral metabolism as well as in serum protein level. Investigators have since supported a myriad of hypotheses. Note has been taken of variations in carbohydrate metabolism (R16), and of changes in the synthesis of hyaluronic acid with resultant alterations in transport mechanisms (CIO). Changes in fatty acid levels and metabolism (C8), alterations of aldolase activity (C6), increased proteolytic activity (S33), and alterations in the composition of proteins in psoriatic scales (L20) have been suggested. Changes in serum copper content in psoriatic patients have been observed (L18). [Pg.182]

Figure 3 Proposed interactions between mechanical strain, proteoglycans (PGs), and transforming growth factor (TGF)-P in the extracellular environment of the airway wall. Excessive mechanical strain stimulates fibroblasts to increase PG secretion and deposition. The altered viscoelastic properties of the matrix subsequently modulate transmission of the mechanical signal to the airway structural cell and, thereby, protect the cell from mechanical strain-induced injury. In addition, increases in decorin may result in enhanced binding of TGF-P and thereby influence the effects of this cytokine on the fibroblast. Finally, changes in small PGs, such as decorin and lumican, may affect formation of collagen fibrils. CS, chondroitin sulfate HA, hyaluronic acid. Figure 3 Proposed interactions between mechanical strain, proteoglycans (PGs), and transforming growth factor (TGF)-P in the extracellular environment of the airway wall. Excessive mechanical strain stimulates fibroblasts to increase PG secretion and deposition. The altered viscoelastic properties of the matrix subsequently modulate transmission of the mechanical signal to the airway structural cell and, thereby, protect the cell from mechanical strain-induced injury. In addition, increases in decorin may result in enhanced binding of TGF-P and thereby influence the effects of this cytokine on the fibroblast. Finally, changes in small PGs, such as decorin and lumican, may affect formation of collagen fibrils. CS, chondroitin sulfate HA, hyaluronic acid.
A simpler version of this method was also developed for the same purpose, requiring only the integration of sorbitol dehydrogenase into an electrode whose surface was modified with hyaluronic acid, carbon nanotubes, and toluidine blue [65]. Although the sensitivity of the determination is not significantly altered by the modifications, the determination rate increases enormously to 65 h h so that this strategy becomes more attractive than the previous one. [Pg.460]


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See also in sourсe #XX -- [ Pg.449 ]




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