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Hefei, China

Deng Q.,CAS Hefei Institutes of Physical Science | Tang H.,CAS Hefei Institutes of Physical Science | Liu G.,CAS Hefei Institutes of Physical Science | Song X.,Anhui Medical College | And 4 more authors.
Applied Surface Science

Abstract A new micro/nanostructure photocatalyst, Ag nanoparticles decorated ZnO nanosheets-assembled microspheres (Ag-NPs/ZnOs), was synthesised by a two-step method. The flower-like micron-sized ZnO spheres assembled with ∼25 nm thick ZnO nanosheets were initially fabricated via a facile solvothermal method. Then, highly dispersed Ag nanoparticles (Ag-NPs) with dimension ranging from 15 to 50 nm were anchored onto the surface of the each ZnO nanosheet by the Sn(II) ion activation method. The as-prepared Ag-NPs/ZnOs demonstrated enhanced photocatalytic performance in eliminating methylene blue and methyl orange aqueous solutions under UV irradiation, showing twice faster reaction rate than the bare ZnOs. The enhanced photocatalytic activity was due to the suppression of electron/hole pair recombination and the acceleration of surface charge transfer induced by the highly dispersive Ag-NPs, which was further demonstrated by the cyclic voltammetry and impedance spectra measurements. © Elsevier B.V. All rights reserved. Source

Dong L.,Anhui Medical College
Chinese Journal of Oncology

Objective: To investigate the expression of p38 mitogen-activated protein kinase (p38MAPK) in salivary adenoid cystic carcinoma (SACC) tissues and their clinicopathologic significance. Methods: The protein and mRNA expressions of p38MAPK were examined by immunohistochemistry and in situ hybridization, respectively, in 52 cases of SACC and in 11 normal salivary gland tissues adjacent to the tumors on a tissue microarray platform. Results: The positive rate of p38MAPK protein expression in the paracancerous normal salivary gland tissues and that in SACC were 36.4% and 96.2%, respectively, showing a significant statistical difference (P < 0.01). The protein expression of p38MAPK was positively correlated with the lymph node metastasis and nerve involvement (P < 0.05). The positive rates of p38MAPK mRNA in the paracancerous tissues and in the SACC tissues were 45.5% and 94.2%, respectively, with a significant statistical difference (P < 0.01). The mRNA expression of p38MAPK was positively correlated with the lymph node metastasis and nerve involvement (P < 0.05). In the SACC, there was a notable positive correlation between the p38MAPK protein and mRNA expressions (r = 0.409, P < 0.01). Conclusions: The expression of p38MAPK is up-regulated in salivary adenoid cystic carcinoma. p38MARK may be involved in the tumorigenesis, development and metastasis of this cancer. Source

Wang X.,Anhui University | Zhang J.,Anhui University | Zou W.,Anhui University | Wang R.,Anhui Medical College
RSC Advances

In this work, for the first time, novel polyaniline/carbon dot (PANI/Cdot) nanocomposites have been synthesized using a simple method. Meanwhile, the bright fluorescence of Cdots is effectively quenched by PANI through fluorescence resonance energy transfer. With the addition of Hg2+, the strong binding affinity between Hg2+ and the amino groups of PANI makes the Cdots break away and release from the PANI, resulting in the restoration of Cdot fluorescence, which can be used as a fluorescent probe for Hg2+ detection. This fluorescence "off-on" signal is sensitive to the concentration of Hg2+, and there is a good linear relationship between the fluorescence intensity of Cdots and Hg2+ concentrations in the range of 0.05 to 1.0 μM. The detection limit for Hg2+ at a given concentration is 0.8 nM. Moreover, it turns out that the nanoprobes represent a rather high selectivity for Hg2+ detection. We believe that PANI/Cdot composites will emerge as a new class of fluorescence materials that could be very likely to be suitable for practical applications. © The Royal Society of Chemistry 2015. Source

Bo Y.,Anhui Medical College | Yuan L.-P.,Anhui Medical University
Indian Journal of Pediatrics

Objective To investigate the distribution and expression of apelin in kidney of adriamycin (ADR)-induced nephrotic rats, and to explore the possible association of apelin expression with the development of proteinuria. Methods Immunohistochemical staining for apelin was used to examine the expression and distribution of apelin in kidney of adriamycin (ADR)-induced nephrotic rats at 7, 14, 21 and 28 d after adriamycin injection. The level of serum apelin at 7, 14, 21 and 28 d after ADR injection was also determined with ELISA methods. Moreover the correlation of urine protein and glomerular expression of apelin was analyzed. Results The apelin protein was immunohistochemically detected along glomerular basement membrane (GBM) in the kidney of rats and significantly increased compared with normal control rats after ADR injection. The levels of 24 h proteinuria and serum apelin were also elevated after ADR injection. Moreover the production of proteinuria was correlated positively with the expression of apelin in kidney tissue (rs=0.9427, P<0.01). Conclusions The glomerular expression of apelin increased significantly in ADR rats, which is correlated with urine protein. © Dr. K C Chaudhuri Foundation 2011. Source

Lu S.,China Institute of Technology | Song X.,Anhui Medical College | Xu H.,China Institute of Technology | Liu Q.,China Institute of Technology | Wang M.,Anhui Medical University
Journal of Radioanalytical and Nuclear Chemistry

The bentonite from Gaomiaozi county (Inner Mongolia, China) (denoted as GMZ bentonite) was characterized by X-ray powder diffraction and Fourier transform infrared spectroscopy. The effect of pH, contact time, ionic strength, humic acid (HA) and Eu(III) concentrations on Eu(III) sorption to the GMZ bentonite was studied by batch technique under ambient conditions. The sorption of Eu(III) on GMZ bentonite was strongly dependent on pH and independent of ionic strength. The sorption of Eu(III) on GMZ bentonite was mainly dominated by surface complexation rather than by ion exchange. The presence of HA enhanced Eu(III) sorption at low pH values, but decreased Eu(III) sorption at high pH values. The enhanced sorption of Eu(III) on GMZ bentonite at low pH was attributed to the strong complexation of Eu(III) with surface adsorbed HA on GMZ bentonite and the reduced sorption of Eu(III) at high pH was attributed to the formation of soluble HA-Eu complexes in aqueous solution. The strong sorption of Eu(III) on GMZ bentonite suggested that the GMZ bentonite could be used as the backfill material in nuclear waste disposal. © 2012 Akadémiai Kiadó, Budapest, Hungary. Source

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