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New evidence suggests an important role for spinal glial cells in the development of opioid dependence. Curcumin, a component of the Curcuma Longa, has shown to act as a suppressor of microglial cells. The main goal of this study was to explore the attenuating effects of curcumin on morphine dependence with a focus on spinal microglial cells and inflammatory cytokines. In order to induce morphine dependence in male Wistar rats, morphine was administered intraperitoneally (i.p.) once daily for 9 days in an increasing dose of 10, 20, and 40 mg/kg. Curcumin (2.5, 5, and 10 mg/kg, i.p.) was given from the days 10th to 18th. Naloxone-precipitated abstinence syndrome was used to assess the behavioral symptoms of morphine dependence. Immunofluorescence staining of Iba1 and ELISA test were used to measure spinal microglial activity and inflammatory cytokines levels, respectively. The results showed that curcumin (2.5, 5, and 10 mg/kg) significantly decreased jumping, leaning, and diarrhea in morphine-dependent rats. In addition, the spinal concentration of TNF-α and IL-6 was reduced by curcumin (2.5, 5, and 10 mg/kg) significantly. Moreover, curcumin showed a potent attenuating effect on the number of Iba1 positive cells in rats which were subjected to morphine dependence. The results of this study demonstrated that curcumin exerts a remarkable reducing effect on morphine dependence in rats. GPCR activator The findings showed that the therapeutic effect of curcumin on morphine dependence is mediated through the suppression of activated microglial cells and reduction of inflammatory cytokines levels in the spinal cord.Meat, as an important source of protein, is one of the main parts of many people's diet. Due to economic interests and thereupon adulteration, there are special concerns on its accurate labeling. In this study Fourier transform infrared (ATR-FTIR) spectroscopy combined with chemometric techniques (principal component analysis (PCA), artificial neural networks (ANNs), and partial least square regression (PLS-R)) were employed for discrimination of pure beef meat from textured soy protein plus detection and quantification of texture soy protein in a mixture with beef meat. Spectral preprocessing was carried out on each spectra including Savitzki-Golay (SG) smoothing filter, Standard Normal Vitiate (SNV), scatter correction (MSC), and min-max normalization. Spectral range 1700-1071 cm-1 was selected for further analysis. Principal component analysis showed discrete clustering of pure samples. In the next step, supervised artificial neural networks (ANNs) were performed for classification and discrimination. The results showed classification accuracy of 100% using this model. Furthermore, PLS-R model correlated the actual and FTIR estimated values of texture soy protein in beef meat mixture with coefficient of determination (R2) of 0.976. In conclusion, it was demonstrated that ATR-FTIR spectroscopy along with PCA and ANNs analysis might potentially replace traditional laborious and time-consuming analytical techniques to detect adulteration in beef meat as a rapid, low cost, and highly accurate method.This study focuses on optimization and validation of an Ultrahigh-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method for simultaneous analysis of 11mycotoxins Aflatoxins (B1, B2, G1, and G2), Ochratoxin A, Deoxynivalenol, Fumonisins (B1 and B2), Zearalenone, T-2, and HT-2toxin, in wheat matrix. Sample extraction and cleanup procedure is based on a single extraction step using acetonitrile/water/acetic acid mixture (79.5/20/0.5 v/v/v) and rapid clean-up of samples were performed with the Myco6in1+ Immunoaffinity column. Electrospray ionization at positive mode was operated to the simultaneously analysis of selected mycotoxins in a single run time of 15 min. Multiple Reaction Monitoring (MRM) mode was selected for quantification and detection of the mycotoxins. The analysis method was validated for selected mycotoxins at different spike levels (2-150 ngg-1 for AFs, T-2, OTA; 20-1500 ngg-1 for ZER, HT-2 toxin; and 100-1500 ngg-1 for DON and FB1+B2) in wheat. Calibration curves were plotted based on the area of peak analyte in spike samples. Limits of detection (LOD) ranged from 0.7 to 33.3 ngg-1 and limits of quantification (LOQ) ranged from 2 to 100 ngg-1. Recovery values were between 70 and 120% for all the mycotoxins, except for AFG2 (72-123%) and T-2 toxin (77-122%) with good repeatability. The recoveries and repeatabilities were in accordance with the criteria determined by European Union (EU) Recommendation 519/2014.It has been shown that brain glucose metabolism impairment, obesity, and diabetes could lead to cognitive decline and Alzheimer's disease (AD) pathogenesis. Kisspeptin (KP) a G-protein coupled receptor neuropeptide, has been suggested as a link between energy balance and reproduction. Some studies have shown that the attenuation of KP signaling decreases metabolism and energy expenditure. KP mRNAs and receptors are detected in the hippocampus and cause the promotion of excitatory synaptic responses through modulation of postsynaptic signaling. The purpose of this study was to investigate the effect of KP on spatial learning and memory and its possible neuroprotective effect on Amyloid-Beta induced cognitive impairment using the Morris Water Maze (MWM) task in rats. The reference and reversal spatial learning and memory have been measured in this study. Rats were injected bilaterally by Aβ1-42 (2 μg/μL) or saline as a vehicle into the hippocampal CA1 area. One week later, KP-13 (1.5 or 2 µg/µL) was injected i.c.v before or after each training session for 3 days and memory was tested 24 h later. The results showed KP-13 by itself could significantly enhance spatial memory consolidation and retrieval, and Aβ induced reversal and reference memory impairment was significantly ameliorated by KP-13. In Conclusion, it seems that KP-13 as a neuropeptide has to enhance spatial memory properties and could be a possible neuroprotective peptide on amyloid-beta induced pathology.Recently, antimicrobial peptides have been introduced as potent antibiotics with a wide range of antimicrobial activities. They have also exhibited other biological activities, including anti-inflammatory, growth stimulating, and anti-cancer activities. In this study, an analog of Magainin II was designed and produced as a recombinant fusion protein. The designed sequence contained 24 amino acid residues (P24), in which Lys, His, Ser residues were substituted with Arg and also, hydrophobic Phe was replaced with Trp. Recombinant production of P24 in Escherichia coli (E. coli) BL21 using pTYB21, containing chitin binding domain and intein sequence at the N-terminus of the peptide gene, resulted in 1 μg mL-1 product from culture. Chitin column chromatography, followed by online peptide cleavage with thiol reducing agent was applied to purify the peptide. Antimicrobial activity was evaluated using five bacteria strains including Staphylococcus aureus, Enterococcus faecalis, Klebsiella pneumonia, E. coli, and Pseudomonas aeruginosa.
Read More: https://www.selleckchem.com/products/dibutyryl-camp-bucladesine.html
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