Pb and BHA in Pb-BHA-NaOL collector assembled by lead nitrate (Pb), benzohydroxamic acid (BHA), sodium oleate (NaOL) with a 240:120:1 molar ratio scheelite flotation have the common defects of reagents including high cost, environmental pollution reducing hydrometallurgy efficiency. Therefore, this study, efficient desorption reuse adsorbed on surfaces was first proposed. The test results showe...

the binding behavior of a competitive inhibitor, n-phenylbenzhydroxamic acid (bha) against horseradish peroxidase (hrp) was studied in order to understand and predict the interaction mechanism of hydrogen donors with the enzyme. the dissociation constants of the complexes of hrp-bha, hrp-donor and hrp-bha-azide were estimated at specified conditions by difference spectroscopy. the binding site ...

Hyaluronan is synthesized within the cytoplasm and exported into the extracellular matrix through the cell membrane of fibroblasts by the MRP5 transporter. In order to meet the law of electroneutrality, a cation is required to neutralize the emerging negative hyaluronan charges. As we previously observed an inhibiting of hyaluronan export by inhibitors of K(+) channels, hyaluronan export was no...

Bacillus cereus, Clostridium perfringens, Staphylococcus aureus, Pseudomonas fluorescens, Pseudomonas fragi, Escherichia coli, and Salmonella "anatum" were challenged with butylated hydroxyanisole (BHA). Susceptibility was measured as the concentration of BHA required to cause a 90% reduction in bacterial survivors. Staphylococcus aureus LP and P. fragi were two of the most resistant species ex...

With diabetes mellitus, the ability of the kidneys to maintain fluid balance is affected. Hyperglycaemia increases production of hyaluronan in cultured kidney cells implying that diabetes promotes induction of hyaluronan in the kidney. The aim of the present study was to determine if the interstitial matrix component hyaluronan is differently distributed within the kidney in diabetic rats compa...

The regulation of hyaluronan synthesis and shedding was analysed in human fibroblasts and in two melanoma cells that differed in the metastatic potential and proteolysis of the hyaluronan receptor CD44. Dissociation of nascent hyaluronan from plasma membranes isolated from fibroblasts by high salt concentrations led to activation of hyaluronan synthase. Hyaluronan synthesis was also enhanced in...

Two recently developed sensitive techniques, in situ hybridization with a biotinylated cloned DNA probe and an avidin-biotin complex immunoperoxidase assay, were compared with the appearance of cytopathic changes for the early detection of herpes simplex virus infection in cell culture. By using commercially made reagents, these detection methods were evaluated in two different cell culture sys...

A microtitration plate based time-resolved fluorescence (TRF) hybridisation assay was developed for HLA typing utilising biotinylated sequence-specific catching probes and europium (Eu) labelled gene locus-specific detection probe to allow time-resolved fluorometer reading of the reaction. In an application for HLA-DQA typing a 228 base pair long region of the polymorphic exon 2 of DQA1 gene wa...

The high affinity of avidin for biotin was first exploited in histochemical applications in the mid-1970s.1,2 This egg-white protein and its bacterial counterpart, streptavidin, have since become standard reagents for diverse detection schemes.3,4 In their simplest form, such methods entail applying a biotinylated probe to the sample and then detecting the bound probe with a labeled avidin or s...