In this article, factors affecting the rate of methane oxycondensation reaction, and kinetic laws reaction are studied in a flow differential reactor. Values parallel sequential reactions oxidative condensation at different temperatures for conversion product selectivity, equilibrium composition oxidation components temperatures, based on study such as into products formation ethane, ethylene, ...

Oxidative stress has been implicated in the pathogenesis of various diseases affecting chondrogenesis or the function of articular cartilage. DNA damage caused by oxidative stress may trigger the activation of the nuclear enzyme, poly(ADP-ribose) polymerase-1 (PARP-1) which may contribute to tissue injury. We aimed at investigating the effects of peroxynitrite (100-600 microM) and hydrogen pero...

The molecular role of poly (ADP-ribose) polymerase-1 in DNA repair is unclear. Here, we show that the single-strand break repair protein XRCC1 is rapidly assembled into discrete nuclear foci after oxidative DNA damage at sites of poly (ADP-ribose) synthesis. Poly (ADP-ribose) synthesis peaks during a 10 min treatment with H2O2 and the appearance of XRCC1 foci peaks shortly afterwards. Both site...

Synthetic methods to obtain selectively sulfonated metallo phthalocyanines are compared. Both condensation and direct sulfonation procedures lead to mixtures of monoto tetrasulfonated products which are resolved by reverse phase liquid chromatography in buffered aqueous-methanol. The proportion of sulfonated derivatives is examined as a function of the starting reagents in the case of the conde...

Experimental studies indicate that overactivation of the DNA repair protein poly(ADP-ribose) polymerase (PARP) in response to oxidative damage to DNA can cause cell death due to depletion of NAD+. Oxidative damage to DNA and other macromolecules has been reported to be increased in the brains of patients with Alzheimer's disease. In the present study we sought evidence of PARP activation in Alz...

ABSTRACT Stearic acid was encapsulated successfully with SiO2 shell in nanoscale by situ emulsion interfacial hydrolysis and poly-condensation techniques. The influence of using different mixing techniques on these investigated. Morphologic, thermal crystal structure analysis results show that the ultrasonic technique is suggested for synthesis nanocapsules. Ultrasonic vibrations lead to more h...

AIM To investigate the potential role of poly(ADP-ribose) polymerase 1 (PARP1) in the development of Barrett's esophagus (BE). METHODS A BE mouse model was established to examine the esophageal morphological changes and molecular changes. Microarray analysis was performed to compare the gene expression profiles between BE patients and healthy controls. qPCR was used to examine the PARP1 expre...

This paper solely describes about novel aliphatic polymer prepared from polyethyleneglycol (PEG 400) moieties by melt poly condensation of 1, 4- cyclohexanediol and dodecanedioic acid. The structural elucidation the obtained, were thoroughly investigated various techniques such as FTIR, NMR, DSC, TGA, XRD. polycondensation reaction was carried out presence Titanium (IV) isopropoxide catalyst. W...