AIM To select carbazole-degrading bacteria able to survive and metabolize carbazole in biphasic organic-water media and to study the factors affecting carbazole degradation in such conditions. METHODS AND RESULTS In this research a new carbazole-degrading strain was isolated from hot springs in Mexico. This bacterium was preliminary identified as Burkholderia sp. IMP5GC and was able to grow u...

Mineralization and subsequent calculus formation is a common complication of biofilm infections. In the urinary tract, these infected calculi often arise from infections by urease-producing bacteria. Ammonia, liberated by bacterial urease activity, increases urine pH, resulting in the precipitation of Ca and Mg as carbonateapatite {Ca10(P04,C03MOH,C03) 2} and struvite (NH4MgP04·6Hp). These mine...

Skin and subcutaneous lesions of 2 cases with natural occurring Cushing’s disease and 1 case with calcinosis circumscripta were compared. Case 1 was typical of osteoma cutis, containing somewhat regularly arranged discrete ossification foci in the mid and deep dermis. Case 2 had layers of “mille feuille”, yellowish to white gritty chalky substances diffusely scattered in the subcutis, seen hist...

X-ray powder diffraction and chemical analyses show that mammalian dental enamel apatite is an impure form of hydroxylapatite, Ca10(PO4)6(OH)2 (structure described in Elliott 1994). The major difference of enamel apatite from hydroxylapatite is in the presence of about 3 wt% CO3. Details of the crystallographic structures of carbonate-containing apatites (including minerals) are important becau...

Although nanoscale hydroxyapatite [Ca10(PO4)6(OH)2; HA] has been widely investigated as a carrier in the delivery of drugs, genes, or siRNA, the in vivo toxicity of nanoscale HA is not clear and the long-term dynamic distribution in vivo has not hitherto been visualized. In this work, gadolinium-doped HA nanorods (HA:Gd) with an r1 value of 5.49 s(-1) (mm)(-1) have been prepared by a hydrotherm...

The present study describes the influence of potassium and hydroxyl substitutions on structural, thermal mechanical properties fluorapatite bioceramics. A set non-stoichiometric ion-substituted compounds, with a chemical formula Ca10−xKx(PO4)6F(2−2x)(OH)x 0 ≤ x 1 synthesized by wet precipitation method, were found to be single-phase apatites crystallizing in hexagonal P63/m space group. structu...

The açaí (Euterpe oleracea Mart.) is an Amazonian fruit that widely consumed in Brazil and around the world, particularly due to its large number of bioactive compounds. In order verify characteristics popular consumer products, aim this study was test increasing function pulp (bioactive compounds antioxidant activity) production coconut candy. treatments consisted four formulations candy (C): ...

Addition of copper in biomaterials is currently investigated because it expected to enhance the biological properties bone graft substitutes. Copper-doped hydroxyapatite (CuHA) ceramics were prepared by high temperature solid-state reaction sintering between HA and CuO powder mixtures. The occurred from 950 °C copper-doped apatites obtained up 5.3 wt% copper. For higher content, presence second...