A method is proposed for the measurement of glycosaminoglycans (GAG) on 5-10 ml of plasma. It is based on the adsorption of GAG on small ECTEOLA columns followed by measurement of the hexuronic acid in the NaCl eluates. Routine use of the method has indicated the presence of a GAG fraction that adsorbs readily on ECTEOLA ("free" GAG) and of another that adsorbs on it only after treatment with p...

Advances in the diagnosis and treatment of cartilage degeneration will be accelerated with the availability of validated biomarkers that reveal the features relevant to the health of cartilage. Using the delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) technique for evaluating tissue glycosaminoglycan as a case study, I review the types of evidence needed to validat...

Glycomics research requires the isolation of glycans from cells for structural characterization and functional studies of the glycans. A method for cell-based microscale isolation and quantification of highly sulfated, moderately sulfated, and nonsulfated glycosaminoglycans (GAGs) was developed using Chinese hamster ovary (CHO) cells. This microscale isolation relies on a mini-strong anion exch...

Glycosaminoglycans, mainly chondroitin 4-sulfate, are located in the primary granules of human myeloid cells. These polyanionic carbohydrates are believed to play an important role in leukocyte maturation and function. To study the effect of altered chondroitin sulfate metabolism on human promyelocytic leukemia cells, we have treated HL-60 cells with 4-methylumbelliferyl-$-D-xyloside. -DXylosid...

Although glycosaminoglycans contribute to diverse physiological processes, an understanding of their molecular mechanisms has been hampered by the inability to access homogeneous glycosaminoglycan structures. Here, we assembled well-defined chondroitin sulfate oligosaccharides using a convergent, synthetic approach that permits installation of sulfate groups at precise positions along the carbo...

Mucopolysaccharidosis type III (MPS III), or Sanfilippo syndrome, is a lysosomal storage disease in which heparan sulfate is accumulated in lysosomes, as well as outside of cells, as the primary storage material. This disease is a complex of four conditions caused by dysfunctions of one of genes coding for lysosomal enzymes involved in degradation of heparan sulfate: SGSH (coding for heparan N-...

The !3-secretase (BACE1) is initially synthesized as a partially act ive zymogen contain ing a prodomain which can be furthe r activated th rough proteolytic cleavage of the prodomain by a fu rin-Iike protease.The active site of BACEl is large and although a number of high-affinity active-site inh ibitors of BACEl have been described, most of these compounds are large, polar and do not cross th...

time to the enzyme was 24 hours at a concentration of 8,200 units per milliliter which would provide both an adequate contact time and enzyme concentration for glycosaminoglycan degradation. The quantitative examination of stromal tissue sections for glycosaminoglycans revealed that hyaluronic acid was lost entirely from the stroma and other sulfated compounds were also lost from the tissue. Th...

Glycosaminoglycans are of critical importance in intercellular communication in organisms. This ubiquitous class of linear polyanions interacts with a wide variety of proteins, including growth factors and chemokines, which regulate important physiological processes. The presence of glycosaminoglycans on cell membranes and in the extracellular matrix also has resulted in their exploitation by i...

Introduction and Aim: Glycosaminoglycans are sulphated polysaccharides which shows various biological activities including anti-obesity, anti-inflammation etc., Extracted glycosaminoglycans (e-GAGs) from mackerel fish waste was studied for their potential as an anti-obesity molecule by in-vivo mechanisms. An attempt made to study beneficial effects in regulating plasma biomarkers fatty acids of...