The Enzymatic Degradation of Heparin and Heparitin Sulfate
Crude enzyme obtained from heparin-induced flavobacteria has been fractionated into a heparitinase acting on heparitin sulfates and related compounds and a heparinase acting mainly on heparin. Purification achieved for each was from 50 to 100 times that of earlier preparations containing a mixture of the two enzymes.
Alfred Linker, Peter Hovingh
semanticscholar +8 more sources
Heparitin Sulfate Mucopolysaccharidosis (Sanfilippo Disease): A Case Study with Ultrastructural, Biochemical, and Radiological Findings [PDF]
Extract: A case study of a 14-year-old female child who developed normally for 18 months but subsequently deteriorated rapidly in mental status and social behavior is reported. Histochemical studies of tissues removed at biopsy from liver, skin, and bone marrow showed changes similar to those found in the Hurler syndrome. Ultrastructural changes of the
M. Daria Haust+9 more
semanticscholar +3 more sources
Structural Studies on Heparitin Sulfate of Normal and Hurler Tissues
Abstract Heparitin sulfate isolated from human aorta is a polysaccharide of molecular weight 24,000 to 29,000, which is bound to protein by way of serine. The presence of serine, xylose, and galactose in a molar ratio of 1:1:2 suggests that the linkage region of this mucopolysaccharide is similar to that in chondroitin 4-sulfate and in heparin ...
Albert Dorfman+2 more
semanticscholar +5 more sources
Effect of Heparitin Sulfate Fractions on Coagulation and Hemostasis
SummaryThe antihemostatic and anticoagulant activities of heparin and heparitin sulfate fractions were compared. Heparitin sulfate D has the same antihemostatic activity as heparin but negligible anticoagulant activity, demonstrating differences in the molecular mechanisms of these two biological processes.
Carl P. Dietrich, Helena B. Nader
semanticscholar +5 more sources
Objective To determine the presence of glycosaminoglycans in the extracellular matrix of connective tissue from neoplastic and non-neoplastic colorectal tissues, since it has a central role in tumor development and progression.
Ana Paula Cleto Marolla+5 more
doaj +1 more source
Damage in porous media due to salt crystallization [PDF]
We investigate the origins of salt damage in sandstones for the two most common salts: sodium chloride and sulfate. The results show that the observed difference in damage between the two salts is directly related to the kinetics of crystallization and the interfacial properties of the salt solutions and crystals with respect to the stone. We show that,
arxiv +1 more source
Geochemistry constrains global hydrology on Early Mars [PDF]
Ancient hydrology is recorded by sedimentary rocks on Mars. The most voluminous sedimentary rocks that formed during Mars' Hesperian period are sulfate-rich rocks, explored by the $Opportunity$ rover from 2004-2012 and soon to be investigated by the $Curiosity$ rover at Gale crater.
arxiv +1 more source
The Affinity of the Sulfate- and Ether-Containing Surface-Active Ionic Liquids to Carbon Dioxide, Hydrogen Fluoride, Hydrogen Sulfide, and Water [PDF]
The development of novel task-specific ionic liquids (ILs) represents an essential challenge in modern organic and physical chemistries. Recently we reported surface-active ILs contained the two well-known organic cations (1-butyl-3-methylimidazolium and tetrabutylammonium) and the two surface-active anions (lauryl sulfate, lauryl ether sulfate).
arxiv
Underpotential deposition of Cu on Au(111) in sulfate-containing electrolytes: a theoretical and experimental study [PDF]
We study the underpotential deposition of Cu on single-crystal Au(111) electrodes in sulfate-containing electrolytes by a combination of computational statistical-mechanics based lattice-gas modeling and experiments. The experimental methods are in situ cyclic voltammetry and coulometry and ex situ Auger electron spectroscopy and low-energy electron ...
arxiv +1 more source
A Mechanistic Model of Annual Sulfate Concentrations in the United States [PDF]
We develop a mechanistic model to analyze the impact of sulfur dioxide emissions from coal-fired power plants on average sulfate concentrations in the central United States. A multivariate Ornstein-Uhlenbeck (OU) process is used to approximate the dynamics of the underlying space-time chemical transport process, and its distributional properties are ...
arxiv