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ascorbate/fogszuvasodás
A hivatkozás a vágólapra kerül
Oldal 1 tól től 76 eredmények
Effects of ascorbate and hydroxyl radical degradations on the structural, physicochemical, antioxidant and film forming properties of chitosan.
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Belépés Regisztrálás
In this study, chitosan (CS) was degraded by ascorbate radical (Asc•-) and hydroxyl radical (•OH), respectively. The structural, physicochemical, antioxidant and film forming properties of Asc•- and •OH degraded CS were compared for the first time. Results showed the structure and physicochemical
Effective application duration of sodium ascorbate antioxidant in reducing microleakage of bonded composite restoration in intracoronally-bleached teeth.
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OBJECTIVE
The aim of this study was to determine an appropriate application duration of sodium ascorbate (SA) antioxidant gel in reducing microleakage of bonded composite restoration in intracoronally-bleached teeth.
METHODS
Eighty endodontically-treated human incisors were randomly divided into
Azethoxyl nitroxide spin labels. ESR studies involving thiourea crystals, model membrane systems and chromatophores, and chemical reduction with ascorbate and dithiothreitol.
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Trans- and cis-azethoxyl nitroxides 1, 2, 3 and 4 can be trapped in the cavities of thiourea crystals. The presence of a single gauche conformation on either side of the pyrrolidine ring within the crystals was indicated by the ESR spectra. Rotation about the long molecular axis then corresponds
Purine substrate recognition by the nucleobase-ascorbate transporter signature motif in the YgfO xanthine permease: ASN-325 binds and ALA-323 senses substrate.
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The nucleobase-ascorbate transporter (NAT) signature motif is a conserved 11-amino acid sequence of the ubiquitous NAT/NCS2 family, essential for function and selectivity of both a bacterial (YgfO) and a fungal (UapA) purine-transporting homolog. We examined the role of NAT motif in more detail,
Chitosan Ascorbate Nanoparticles for the Vaginal Delivery of Antibiotic Drugs in Atrophic Vaginitis.
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The aim of the present work was the development of chitosan ascorbate nanoparticles (CSA NPs) loaded into a fast-dissolving matrix for the delivery of antibiotic drugs in the treatment of atrophic vaginitis. CSA NPs loaded with amoxicillin trihydrate (AX) were obtained by ionotropic gelation in the
Evidences for structural basis of altered ascorbate peroxidase activity in cadmium-stressed rice plants exposed to jasmonate.
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Binding interactions of cadmium (Cd) with rice ascorbate peroxidase (OsAPX) in presence or absence of jasmonate was examined in-silico. OsAPX is a 250 amino acid long protein with 90 % sequence similarity to soybean-APX. The 3D model of OsAPX obtained by homology modeling using soybean APX
Cavity enhanced liquid-phase stopped-flow kinetics.
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The first application of liquid-phase broadband cavity enhanced spectroscopy (BBCEAS) to the measurement of stopped-flow kinetics is reported. The stopped-flow technique is widely used for the study of the kinetics of fast liquid-phase reactions down to millisecond timescales. UV-visible absorption
Production of nitric oxide-derived reactive nitrogen species in human oral cavity and their scavenging by salivary redox components.
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Nitrite is reduced to nitric oxide (NO) in the oral cavity. The NO generated can react with molecular oxygen producing reactive nitrogen species. In this study, reduction of nitrite to NO was observed in bacterial fractions of saliva and whole saliva. Formation of reactive nitrogen species from NO
Irreversible cross-linking of heme to the distal tryptophan of stromal ascorbate peroxidase in response to rapid inactivation by H2O2.
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Ascorbate peroxidase (APX) isoforms localized in the stroma and thylakoid membrane of chloroplasts play a central role in scavenging reactive oxygen species generated by photosystems. These enzymes are inactivated within minutes by H2O2 when the reducing substrate, ascorbate, is depleted. We found
New insights into the heme cavity structure of catalase-peroxidase: a spectroscopic approach to the recombinant synechocystis enzyme and selected distal cavity mutants.
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Catalase-peroxidases (KatGs) are heme peroxidases with homology to yeast cytochrome cperoxidase (CCP) and plant ascorbate peroxidases (APXs). KatGs exhibit a peroxidase activity of broad specificity and a high catalase activity, which strongly depends on the presence of a distal Trp as part of the
Ascorbate polyphosphate is a bioavailable vitamin C source in juvenile rainbow trout: tissue saturation and compartmentalization model.
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We studied the bioavailability of ascorbic acid ester, ascorbate polyphosphate, to juvenile rainbow trout (Oncorhynchus mykiss). Fish were fed molar equivalents of 0, 20, 40, 80, 160, 320 and 1280 mg ascorbic acid/kg diet in the form of ascorbate polyphosphate. During the 18 wk of the experiment,
Effect of sodium ascorbate and the time lapse before cementation after internal bleaching on bond strength between dentin and ceramic.
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OBJECTIVE
To evaluate the effects of the elapsed time (ET) after nonvital bleaching (NVB) and sodium ascorbate application (10%) (SAA) on the shear bond strength of dentin to ceramic.
METHODS
Bovine incisors were selected, internally bleached (35% carbamide peroxide) for 9 days and submitted to the
Identification and functional analysis of the L-ascorbate-specific enzyme II complex of the phosphotransferase system in Streptococcus mutans.
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BACKGROUND
Streptococcus mutans is the primary etiological agent of human dental caries. It can metabolize a wide variety of carbohydrates and produce large amounts of organic acids that cause enamel demineralization. Phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS) plays an
Distribution of ascorbate in the retina, subretinal fluid and pigment epithelium.
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The posterior segment of the eye was divided into four compartments: retinal cytosol (R), subretinal fluid on the retinal surface (S/R), retinal pigment epithelial (RPE) cytosol, and subretinal fluid on the RPE surface (S/RPE). The volume of each compartment was estimated from the dilution of
Quercetin-dependent scavenging of reactive nitrogen species derived from nitric oxide and nitrite in the human oral cavity: interaction of quercetin with salivary redox components.
Csak regisztrált felhasználók fordíthatnak cikkeket
Belépés Regisztrálás
In the human oral cavity, nitrite is reduced to nitric oxide (NO) by certain bacteria. The NO formed reacts with O2 to generate NO2 and then with NO2 producing N2O3. In this study, N2O3 produced by the reaction between NO and NO2 was detected by fluorescence increase due to the transformation of
A legteljesebb gyógynövény-adatbázis, amelyet a tudomány támogat
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Írjon be egy tünetet vagy betegséget, és olvassa el azokat a gyógynövényeket, amelyek segíthetnek, beírhat egy gyógynövényt, és megtekintheti azokat a betegségeket és tüneteket, amelyek ellen használják.
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