argyria/carbohydrate

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Silver staining of extensively glycosylated proteins on sodium dodecyl sulfate-polyacrylamide gels: enhancement by carbohydrate-binding dyes.

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Two methods are described for detecting less than 1 microgram of highly glycosylated proteins, such as mucins, on sodium dodecyl sulfate-polyacrylamide gels. They combine commonly employed periodic acid-Schiff (PAS) and Alcian blue dyes with silver stain. Carbohydrate prestaining renders mucins more

Electron Microscopical Autometallography: Immunogold-Silver Staining (IGSS) and Heavy-Metal Histochemistry

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Immunogold-silver staining (IGSS) utilizes a histochemical method called autometallography (AMG) to amplify tiny gold particles to sizes easily visible both in light and electron microscopy. In both applications it is advisable to use the smallest possible gold diameters (1-6 nm) to obtain the

Immunogold-silver staining and epipolarized light microscopic detection of phosphoenolpyruvate carboxykinase and glycogen phosphorylase in rat liver.

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The subcellular distribution of enzymes related to carbohydrate metabolism was determined in sections of paraformaldehyde fixed and polyethylene glycol-1540-embedded rat liver and in cryostat sections. For this purpose, goat anti-rat phosphoenolpyruvate carboxykinase (PEPCK) serum and rabbit

Periodic acid incubation can replace hydrochloric acid hydrolysis and trypsin digestion in immunogold--silver staining of bromodeoxyuridine incorporation in plastic sections and allows the PAS reaction.

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We have examined the possibility of improving the present methods of detecting bromodeoxyuridine (BrdU) and for combining the PAS reaction with the BrdU detection by means of immunogold-silver staining (IGSS). This was done in testes fixed in Carnoy or Bouin, and in parts of the small intestine

The fructokinase from Rhizobium leguminosarum biovar trifolii belongs to group I fructokinase enzymes and is encoded separately from other carbohydrate metabolism enzymes.

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The Rhizobium leguminosarum bv. trifolii BAL fructokinase (frk) gene was isolated on a 2 center dot 4 kb BamHI fragment from the cosmid pLA72 by complementation analysis of the Tn5-induced frk mutant BAL79, and confirmed by hybridization analysis. The nucleotide sequence of the frk gene was found to

Characterization and purification of carbohydrate response element-binding protein of the rat L-type pyruvate kinase gene promoter.

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The L-III transcriptional regulatory element of the rat pyruvate kinase L gene is located between -170 and -150 base pairs upstream of the hepatocyte-specific transcription initiation site. As the L-III element is not only necessary for cell type-specific expression but also for transcriptional

Carbohydrate content of the endolymphatic sac. A histochemical and lectin-labelling study in the Mongolian gerbil.

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A secretory activity has recently been attributed to the endolymphatic sac (ES), as a possible way to contribute to the fluid balance of the entire endolymphatic compartment. Previous histochemical studies have indicated the existence of carbohydrate complexes in the secretory product, both neutral

The carbohydrate moiety of the activator protein for glucosylceramide beta-glucosidase.

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SAP-2 is a family of heat-stable, acidic glycoproteins which stimulate enzymatic hydrolysis of glucosylceramide. We studied the carbohydrate moieties of a ConA-binding form of SAP-2. The protein contained glucosamine, galactose, mannose, and fucose; galactosamine and sialic acid were not detectable.

Investigation by isoelectric focusing of the initial carbohydrate-deficient transferrin (CDT) and non-CDT transferrin isoform fractionation step involved in determination of CDT by the ChronAlcoI.D. assay.

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BACKGROUND The introduction of a new set of reagents for the determination of carbohydrate-deficient transferrin (CDT) as a marker of chronic alcohol abuse requires an independent evaluation of the analytic specificity of the test. This information is needed for correct interpretation and

[Application of silver acetate autometallography in histopathology: a new detection method for use in immunogold silver staining, lectin histochemistry and in situ hybridization].

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Modern histochemical techniques allow the specific detection of tissue constituents in situ. Routinely formalin fixed, paraffin embedded tissues may present problems to the pathologist since destruction of substances can lead to false negative results. Immunogold-silver staining (IGSS) can be a way

Role of carbohydrates in the attachment of equine spermatozoa to uterine tubal (oviductal) epithelial cells in vitro.

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OBJECTIVE To test the hypotheses that the attachment of equine spermatozoa to uterine tubal (oviductal) epithelial cells (OEC) in vitro is mediated by glycoproteins, and that proteins with carbohydrate-binding properties are present in the periacrosomal plasma membrane of equine

[Heterogeneity of cell population of lymphoma NK/Ly and leukemia L-1210 according to carbohydrate structure of cell surface: immunocytochemical analysis of lectin binding].

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The heterogeneity of tumor cell populations according to binding of lectins from lentil (LcL), wheat germs (WGA), peanut (PNA) and concanavalin A was investigated on a model of murine Nemeth-Kellner lymphoma (NK/Ly) and leukemia L-1210. Bound lectins were detected by indirect immunochemical method

Mutation of waaC, encoding heptosyltransferase I in Campylobacter jejuni 81-176, affects the structure of both lipooligosaccharide and capsular carbohydrate.

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Campylobacter jejuni 81-176 lipooligosaccharide (LOS) is composed of two covalently linked domains: lipid A, a hydrophobic anchor, and a nonrepeating core oligosaccharide, consisting of an inner and outer core region. We report the isolation and characterization of the deepest rough C. jejuni 81-176

Characterization of the Cryptosporidium antigens from sporulated oocysts of Cryptosporidium parvum.

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The antigenic constituents of sporulated Cryptosporidium parvum oocyst antigens were characterized with antisera from mice immunized against C. parvum. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis followed by silver staining defined the major proteins. Six of seven lectins used

Purification of canine surfactant-associated glycoproteins A. Identification of a collagenase-resistant domain.

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A procedure for purification of surfactant-associated glycoproteins A from canine surfactant was established utilizing preparative isoelectric focusing as a major purification step in absence of detergents. The proteins migrated as charge trains, isoelectric points 4.2-5.0. Unglycosylated forms of

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