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Author manuscript, published in "Free Radical Biology and Medicine 28, 3 (2000) 403-408" G. Olive et
Ocular melanomas embedded in paraffin wax for histological examination have been studied by electron spin resonance (ESR) spectroscopy. A free-radical signal was detected at the g = 2.003 section of the spectrum. The amplitude of this signal was correlated with the number of melanin granules in microscopical slides made from the tumour. This positive(More)
The addition of antibacterial functionality to dental resins presents an opportunity to extend their useful lifetime by reducing secondary caries caused by bacterial recolonization. In this study, the potential efficacy of nitrogen-doped titanium dioxide nanoparticles for this purpose was determined. Nitrogen doping was carried out to extend the ultraviolet(More)
The detection of free radicals and related species has attracted significant attention in recent years because of their critical roles in physiological and pathological processes. Among the methods for the detection of free radicals, electron spin resonance (ESR) coupled with the use of the spin trapping technique has been an effective approach for(More)
Site Directed Spin Labeling (SDSL) combined with EPR spectroscopy is a very powerful approach to investigate structural transitions in proteins in particular flexible or even disordered ones. Conventional spin labels are based on nitroxide derivatives leading to classical 3-line spectra whose spectral shapes are indicative of the environment of the labels(More)
The understanding of the biotransformations of insulin mimetic vanadium complexes in human blood and its transport to target cells is an essential issue in the development of more effective drugs. We present the study of the interaction of oxovanadium(iv) with human serum albumin (HSA) by electron paramagnetic resonance (EPR), circular dichroism (CD) and(More)
Two copper(II)-ACC complexes were prepared and characterized: [Cu(bpy)(ACC)(H(2)O)]CO(4) (1) and [Cu(ACC)(2)](3).4H(2)O (2). Their crystallographic structures are described and analyzed. Spectroscopic characterizations (UV-visible and EPR) confirm that the structure is maintained in solution. These complexes are able to produce ethylene in the presence of(More)
When studied by electron spin resonance (ESR) (Swartz et al., 1972), tumorous tissues differ from their normal equivalents in the following aspects: 1. In tumourous tissues the signal measured in the vicinity of the g=2 region of the spectrum is of a smaller amplitude or completely absent (Commoner et al., 1954; Commoner, Ternberg, 1961; Mallard, Kent,(More)
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