superoxide dismutase/dental caries

Oral cavity mucositis is a major toxicity of radiation therapy for head and neck cancer. In the present mouse model studies, we evaluated intraoral administration of SOD2-PL complexes 24 h before single-fraction 30-Gy irradiation for the prevention of oral cavity mucositis. Expression of the human

The aim of this study was to purify protein(s) from Piper betle leaf for identification and further characterization. A functionally unknown protein was purified to apparent homogeneity with a molecular mass of 15.7 kDa and identified as Cu/Zn superoxide dismutase (SOD). The purified SOD appeared to

BACKGROUND Despite the importance of reactive oxygen species (ROS) in the development of smoking-related cancers, little is known about the pattern of expression of ROS scavengers in these cancers. METHODS In this present study, we examined the expression of manganese superoxide dismutase (Mn-SOD)

OBJECTIVE To assess the safety of the superoxide dismutase mimetic GC4419 in combination with radiation and concurrent cisplatin for patients with oral cavity or oropharyngeal cancer (OCC) and to assess the potential of GC4419 to reduce severe oral mucositis (OM). METHODS Patients with locally

Water 1H-nuclear-magnetic-relaxation-dispersion (NMRD) measurements of solutions of several copper/zinc superoxide dismutase isoenzymes as well as mutants of the human isoenzyme have been performed in order to monitor the presence of exchangeable water at the copper(II) center. The results have been

OBJECTIVE The purpose of this study was to characterize changes in the expression of copper-zinc superoxide dismutase (Cu/Zn-SOD) and manganese SOD (Mn-SOD) in oral squamous-cell carcinoma (OSCC). METHODS Real-time quantitative reverse transcriptase-polymerase chain reaction analysis of Cu/Zn-SOD

OBJECTIVE To evaluate local effect of gaseous ozone on bacteria in deep carious lesions after incomplete caries removal, using chlorhexidine as control, and to investigate its effect on pulp vascular endothelial growth factor (VEGF), neuronal nitric oxide synthase (nNOS), and superoxide dismutase

The structure of the catalytic site in one subunit of bovine CuZn superoxide dismutase is shown to be highly variable. A series of crystal structures at approximately 1.7 A have been determined using data collected from different crystals. Several conformations are observed for the copper site from

The solution structure of the demetalated copper, zinc superoxide dismutase is obtained for the monomeric Glu133Gln/Phe50Glu/Gly51Glu mutant through NMR spectroscopy. The demetalated protein still has a well-defined tertiary structure; however, two beta-strands containing two copper ligands (His46

Transgenic mice (TG) were used to define mitochondrial oxidative stress and cardiomyopathy (CM) induced by zidovudine (AZT), an antiretroviral used to treat HIV/AIDS. Genetically engineered mice either depleted or overexpressed mitochondrial superoxide dismutase (SOD2(+/-) KOs and SOD2-OX,

Understanding protein hydration is a crucial, and often underestimated issue, in unraveling protein function. Molecular dynamics (MD) computer simulation can provide a microscopic description of the water behavior. We have applied such a simulative approach to dimeric Photobacterium leiognathi Cu,Zn

Bolstering the endogenous oxidative damage defense system is a good strategy for development of treatments to combat neurodegenerative diseases in which oxidative damage plays a role. A first step in such treatment development is to determine the role of various components of the defense system in

The preparation and biophysical characterization of a mutant of superoxide dismutase in which the native Thr 137 has been substituted with a positive Arg residue are reported. Thr 137 forms, together with Arg 143, a bottleneck at the entrance to the active-site Cu ion. The geometry of the Cu ligands

Streptococcus mutans, the main pathogen involved in the development of dental caries, is an aerotolerant microorganism. The bacterium lacks cytochromes and catalase, but possesses other antioxidant enzymes, such as superoxide dismutase (SmSOD). Previous researches suggested that SmSOD belongs to the