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In the kidneys of both control and diabetic rats, Curcumin reduced the levels of reactive oxygen species (ROS), increased mRNA levels of manganese superoxide dismutase (MnSOD) and gamma-glutamyl ligase, increased glutathione (GSH) and protein levels of Bcl-2 and MnSOD, and increased the nuclear levels of nuclear factor2 (Nrf2) and FOXO-3a. Besides, Curcumin reduced the nuclear activity of the nuclear factor-kappa B (NF-κB), downregulated protein kinase CβII (PKCβII), NADPH oxidase, and p66Shc, and decreased the activation of p66Shc. In conclusion, Curcumin prevents kidney damage in diabetic rats by activating Nrf2, inhibiting Nf-κB, suppressing NADPH oxidase, and downregulating/inhibiting PKCβII/p66Shc axis.Nowadays, synthetic chemical antidiabetic drugs, besides their therapeutic effects, present adverse effects that could be hard to handle over time. In the last decade, studies reported new alternative molecules with more health benefits and less adverse effects. The goal of this study is to optimize a new antidiabetic formulation using plant flavonoids Catechin, Epicatechin, and Rutin. They are also a powerful antioxidant and anti-inflammatory molecules. A mixture design experiment will optimize their combination to obtain a new, safe multi-targets antidiabetic formulation making it a powerful combination for the management of diabetes and its complications. To study the variation of blood glucose level in response to the treatment over the time we performed an Oral Glucose Tolerance Test. The blood glucose level variations recorded as responses for the mixture design experiment. We used the molecules at a dose of 10 mg/kg. According to the software analysis, the prediction profiler showed us the optimum combination, and the result was a binary combination between Rutin and Epicatechin (25% and 75%, respectively). This combination prevented hyperglycemia and hypoglycemia, along with the best area under the curve, and after that, we validated it through a repeated oral administration on alloxan-induced diabetic mice for 28 d. Rutin, Catechin, and Epicatechin exhibit a potent antihyperglycemic activity, their synergistic combination validates a new formulation that could be a real candidate to conventional drugs.Heterologous proteins anchoring on the living cell surface have recently received significant attention due to their promising application potential in various areas of biotechnology. This work presents an overview of displaying strategies for oxidoreductases, enzymes important in applied biocatalysis. Anchoring systems for oxidoreductase display on Gram-positive and Gram-negative bacteria and yeasts were analysed. The effect of cell surface display on enzyme activity and stability was demonstrated. It was also shown that besides the activity and stability improvement, the cell surface display strategy in case of oxidoreductases could solve the problem of cofactor regeneration via co-displaying enzyme cascades. Cell surface displayed oxidoreductase applications were also discussed. It was concluded that the highest potential is in the areas of microbial fuel cells, chemical synthesis, biosensors, and bioremediation.A chitosanase (CvCsn46) from Chromobacterium violaceum ATCC 12472 was produced in Escherichia coli, purified, and partially characterized. When subjected to denaturing polyacrylamide gel electrophoresis, the enzyme migrated as two protein bands (38 and 36 kDa apparent molecular masses), which were both identified as CvCsn46 by mass spectrometry. https://www.selleckchem.com/products/ly3537982.html The enzyme hydrolyzed colloidal chitosan, with optimum catalytic activity at 50 °C, and two optimum pH values (at pH 6.0 and pH 11.0). The chitosanolytic activity of CvCsn46 was enhanced by some ions (Ca2+, Co2+, Cu2+, Sr2+, Mn2+) and DTT, whereas Fe2+, SDS and β-mercaptoethanol completely inhibited its activity. CvCsn46 showed a non-Michaelis-Menten kinetics, characterized by a sigmoidal velocity curve (R2 = 0.9927) and a Hill coefficient of 3.95. ESI-MS analysis revealed that the hydrolytic action of CvCsn46 on colloidal chitosan generated a mixture of low molecular mass chitooligosaccharides, containing from 2 to 7 hexose residues, as well as D-glucosamine. The chitosan oligomers generated by CvCsn46 inhibited in vitro the mycelial growth of Lasiodiplodia theobromae, significantly reducing mycelium extension and inducing hyphal morphological alterations, as observed by scanning electron microscopy. CvCsn46 was characterized as a versatile biocatalyst that produces well-defined chitooligosaccharides, which have potential to control fungi that cause important crop diseases. Diffusion-weighted imaging (DWI) for treatment response monitoring is feasible on hybrid magnetic resonance linear accelerator (MR-linac) systems. The MRI scanner of the Elekta Unity system has an adjusted design compared to diagnostic scanners. We investigated its impact on measuring the DWI-derived apparent diffusion coefficient (ADC) regarding three aspects the choice of b-values, the spatial variation of the ADC, and scanning during radiation treatment. The aim of this study is to give recommendations for accurate ADC measurements on Unity systems. Signal-to-noise ratio (SNR) measurements with increasing b-values were done to determine the highest bvalue that can be measured reliably. The spatial variation of the ADC was assessed on six Unity systems with a cylindrical phantom of 40cm diameter. The influence of gantry rotation and irradiation was investigated by acquiring DWI images before and during treatment of 11 prostate cancer patients. On the Unity system, a maximum b-value of 500s/mm should be used for ADC quantification, as a trade-off between SNR and diffusion weighting. Accurate ADC values were obtained within 7cm from the iso-center, while outside this region ADC values deviated more than 5%. The ADC was not influenced by the rotating linac or irradiation during treatment. We provide Unity system specific recommendations for measuring the ADC. This will increase the consistency of ADC values acquired in different centers on the Unity system, enabling large cohort studies for biomarker discovery and treatment response monitoring. We provide Unity system specific recommendations for measuring the ADC. This will increase the consistency of ADC values acquired in different centers on the Unity system, enabling large cohort studies for biomarker discovery and treatment response monitoring.
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