Ricerc@Sapienza

The thermal behavior of pure ZrO2 and four ZrO2-based organic-inorganic hybrids (OIHs) containing increasing amount (6, 12, 24 and 50 wt%) of poly(ε-caprolactone) (PCL) (named Z, ZP6, ZP12, ZP24 and ZP50 respectively) has been studied by simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC). The FTIR analysis of the gas mixture evolved at defined temperatures from the samples submitted to the TG experiments identified the mechanism of each thermally activated process.

Objectives: To evaluate the safety of and patient satisfaction with fractional CO2 laser for the treatment of vulvo-vaginal atrophy (VVA) in postmenopausal patients. Study design: Patients affected by VVA were considered for the study. All women were treated using a Lumenis AcuPulse DUO (Lumenis, Yokneam, Israel) in fractionated mode with a 28 mm probe, FemTouch™. Pain during different steps of the procedure (introduction, rotation and extraction of probe and laser impulse transmission) was evaluated on a 7-point Likert scale.

Oxidative stress and apoptosis are both associated with various acute and chronic disorders. Thus, the aim of the present study is to synthesize imidazo[2,1-c][1,2,4]triazines derivatives and to evaluate their effects in H2O2-induced oxidative stress in human neuroblastoma cell line (SH-SY5Y cells). The effects of the compounds on cell viability were measured by MTT assay and the changes in stress and apoptosis-related proteins were investigated by PathScan® Stress and Apoptosis Signaling Antibody Array kit and Western Blot technique.

Alkaloids have always attracted scientific interest due to either their positive or negative effects on human beings. This review aims to summarize their antioxidant effects by both classical in vitro scavenging assay and at the cellular level. Since most in vitro studies used the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging assay, the results from those studies are summed up in the first part of the article.

A fully biological Microbial Electrolysis Cell (MEC) aimed at biogas upgrading has been operated under different operating conditions in order to enhance CO2 removal from a synthetic biogas. Specifically, CO2 reduction into CH4 occurred at the MEC biocathode with the oxidation of organic substrates in the anodic chamber partially sustaining the energy demand of the process. In the cathode chamber, methane formation was the main driver of current generation which, in turn, sustained alkalinity generation and related CO2 sorption.

In this work, we developed an impedimetric label-free immunosensor for the detection of 2,4-Dichlorophenoxy Acetic Acid (2,4-D) herbicide either in standard solution and spiked real samples. For this purpose, we prepared by electropolymerization a conductive polymer poly-(aniline-co-3-aminobenzoic acid) (PANABA) then we immobilized anti-2,4-D antibody onto a nanocomposite AuNPs-PANABA-MWCNTs employing the carboxylic moieties as anchor sites.

This survey is dedicated to the multifaceted modes of binding of metal ions by polyazine N donors like 2,3-di(2-pyridyl)pyrazine (dpp), 5,6-di(2-pyridyl)quinoxaline (dpq) and 9,10-di(2-pyridyl)benzoquinoxaline (dpbq) and related substituted analogs, covered until the end of 2016. These compounds display the potential coordination of the dipyridinopyrazine block consisting of two pyridine and two pyrazine N donor atoms. This report illustrates the structural features of the mono-, di- and multinuclear complexes, whenever crystallographic information was available.

Dierent acellular assays were developed to measure particulate matter’s (PM) oxidative potential (OP), a metric used to predict the ability of PM in generating oxidative stress in living organisms. However, there are still fundamental open issues regarding the complex redox equilibria among the involved species which could include reducing compounds. The aim of this study was the pilot application of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay to PM in order to evaluate the presence of reducing species.

Several acellular methods, defined as oxidative potential (OP) assays, have been developed to assess the particulate matter (PM) oxidative capacity and they are considered as predictors of the ability of dust to generate oxidative stress in living organisms. There is no agreement regarding the most representative assay to measure the OP of PM (Ayres et al., 2008), but methods mostly used on the PM filter extracts are the dithiothreitol (DTT; Cho et al., 2005), the 2?,7?-dichlorofluorescin (DCFH; Hung et al., 2001) and the ascorbic acid (AA; Stoeger et al., 2008) assays.

Different acellular assays were recently developed to measure particulate matter (PM) oxidative potential (OP) [1]. Common OP methods include dithiothreitol assay (OPDTT), ascorbic acid assay (OPAA) and 2?,7?-dichlorofluorescin (OPDCFH). OP assays can provide observations on the relationship between PM characteristics and its ability to generate oxidative stress. However, along with oxidizing species, experimental OP values suggest the possible presence of reducing species in PM. Therefore, the obtained data drives the need to deepen knowledge on redox properties of PM.