Tannic acid, a hydrolysable gallotannin present in plant tissues, consists of central glucose molecule esterified with gallic acid molecules. Some microorganisms, including several Aspergillus species, can metabolize tannic by releasing residues from secreting specific esterases into the medium. The expression these so-called tannases is induced or acid. In this study, we identified conserved t...

background: osteoclastogenesis is coordinated by the interaction of members of the tumor necrosis factor (tnf) superfamily: receptor activator of nuclear factor-κb ligand (rankl) and osteoprotegerin (opg). the aim of this study was to compare the effect of two different types of non-steroidal anti-infl ammatory drugs (nsaids) on the rankl/opg balance during the healing of the alveolar process. ...

A protein activator of cyclic 3’:5’-nucleotide phosphodiesterase from bovine brain has been purified to homogeneity by the criteria of analytical polyacrylamide gel electrophoresis, polyacrylamide gel isoelectric focusing, Sephadex G-100 column chromatography, and analytical ultracentrifugation. The over-all purification was about 1700-fold with a yield of 7%. The molecular weight of the activa...

In order to optimize the solid phase extraction (SPE) conditions of perfluorooctanoic acid (PFOA) in raw leachate and treated leachate, effects activator properties, SPE cartridge, pH value, ionic strength, eluent properties were studied through single factor experiments. The optimal results each obtained. Considering that concentration PFOA is lower than have been further optimized. Based on a...

Activated carbon is widely used in various electrochemical applications, one of which an electrode material. The price low, and the essential ingredients are easily obtained from natural materials. material properties very strongly influenced by method manufacture. Thus, selection synthesis procedures, type precursor, activator, heating rate, temperature combustion or pyrolysis makes it easy to...

A protein capable of activating 6-aminolevulinic acid synthetase has been purified from rat liver mitochondria. By treatment of the mitochondrial inner membrane-matrix fraction with Lubrol a soluble and active preparation of 6-aminolevulinic acid synthetase has been obtained. Ammonium sulfate fractionation yielded a 33 to 40% saturated fraction containing catalytic 6-aminolewlinic acid syntheta...

The potential contribution of serine/threonine-specific protein phosphatases in the transcriptional regulation of plasminogen activator and plasminogen activator inhibitor gene expression was explored in human HT-1080 fibrosarcoma and U-937 monocyte-like cells using okadaic acid, a potent and specific inhibitor of phosphatases 1 and 2A (PP1 and PP2A). In both cell types okadaic acid induced pla...

BACKGROUND The expression of the tissue plasminogen activator gene can be affected by histone deacetylation inhibition and thus appears to be under epigenetic control. OBJECTIVES The study aimed to test if in vivo pharmacological intervention by valproic acid treatment would lead to increase in tissue plasminogen activator release capacity. METHODS In an anaesthetized pig model, a controlle...

This report demonstrates the ability of folic acid to activate rat liver porphobilinogen-deaminase (PBG-D). Lineweaver-Burk analysis revealed an increase in Vmax (38%) without affecting the Km. In the concentration range assayed, secondary replots of 1/delta slope and 1/delta intersect versus 1/[folic acid] yielded straight lines, indicating the binding of a single molecule of activator to the ...