Search results for: EnzyChrom™ NAD NADH Assay Kit
#28810706 2017/08/16 Save this To Up
Effects of trigonelline inhibition of the Nrf2 transcription factor in vitro on Echinococcus granulosus.The aim of this study was to investigate the impact of trigonelline (TRG) on Echinococcus granulosus, and to explore the inhibition impact of nuclear factor erythroid-2-related factor 2 (Nrf2) signaling pathway on E. granulosus protoscoleces. Echinococcus granulosus protoscoleces were incubated with various concentrations of TRG, and then Nrf2 protein expression and its localization in protoscoleces were detected by western blot analysis and immunofluorescence assay, respectively. Reactive oxygen species (ROS) level in protoscoleces was measured using ROS detection kit. Caspase-3 activity was measured using a caspase-3 activity assay kit, and NAD(P)H quinone oxidoreductase (NQO)-1 and heme oxygenase (HO)-1 activities in protoscoleces were measured by ELISA. The effect of TRG on protoscoleces viability was investigated using 0.1% eosin staining, and ultrastructural alterations in protoscoleces were examined by scanning electron microscopy (SEM). Immunolocalization experiment clearly showed that Nrf2 protein was predominantly present in cells of protoscoleces. TRG treatment reduced NQO-1 and HO-1 activities in protoscoleces, but could increase ROS level at early time. Protoscoleces could not survive when treated with 250 μM TRG for 12 days. SEM results showed that TRG-treated protoscoleces presented damage in the protoscoleces region, including hook deformation, lesions, and digitiform protuberance. Nrf2 protein expression was significantly decreased and caspase-3 activity was clearly increased in protoscoleces treated with TRG for 24 and 48 h, respectively, when compared with that in controls (P < 0.05). Our results demonstrated that TRG had scolicidal activity against E. granulosus protoscoleces. Nrf2 protein was mainly expressed in the cells and TRG could efficiently inhibit the Nrf2 signaling pathway in E. granulosus.
2083 related Products with: Effects of trigonelline inhibition of the Nrf2 transcription factor in vitro on Echinococcus granulosus.Insulin promoter factor 1 Human Insulin-like Growth Human Migration Inhibitor Human Insulin-like Growth Macrophage Colony Stimula Macrophage Colony Stimula Mouse Insulin-like Growth TGF beta induced factor 2 Recombinant Human Intrins Recombinant Human Intrins Recombinant Human Intrins Recombinant Human WNT Inh
#28677728 2017/07/05 Save this To Up
Overexpression of SIRT1 prevents hypoxia‑induced apoptosis in osteoblast cells.Hypoxic‑ischemic injury of the bone results in osteonecrosis. Nicotinamide adenosine dinucleotide (NAD)‑dependent deacetylase sirtuin‑1 (SIRT1), a type of NAD‑dependent deacetylase, is involved in multiple biological functions, particularly in anti‑apoptosis. However, the effects of SIRT1 in osteoblasts remain unclear and whether SIRT1 protects osteoblasts in hypoxic conditions remains to be elucidated. In the present study, the role of SIRT1 in the osteoblast cells under hypoxia and the underlying mechanism of the anti‑apoptotic activity of SIRT1 were investigated. MC3T3‑E1 osteoblast cells were used for the present study and oxygen‑absorbing packs were used to induce cell hypoxia and apoptosis. MC3T3‑E1 cells were overexpressed SIRT1 by transfection with a SIRT1 adenovirus. The small interfering RNA of SIRT1 to was used to transfect cells to decrease the protein level. An MTT assay was used to estimate cell viability. Apoptosis was examined with the APOPercentage apoptosis assay kit and the activity of caspases was measured by a caspase 3 and 7 activity kit. Co‑immunoprecipitation was used to investigate protein binding ability. The mRNA and protein expression levels were quantified with reverse transcription‑quantitative polymerase chain reaction and immunoblotting. It was demonstrated that the expression of SIRT1 mRNA and protein were elevated, and peaked at 12 h under hypoxic conditions. The data demonstrated that SIRT1 overexpression in cells significantly increased cell viability and markedly decreased the percentage of apoptosis compared with the control and knockdown groups. Furthermore, overexpression of SIRT1 significantly activated anti‑apoptotic effects by deacetylating lysine residue binding to protein kinase B and decreasing the activity of caspases 3, 9 and subsequent pathways. The results from the present study suggested that SIRT1 may serve a protective function in hypoxia‑induced apoptosis in MC3T3‑E1 cells, and that SIRT1 intervention may potentially aid in the treatment of ischemic bone disease.
2321 related Products with: Overexpression of SIRT1 prevents hypoxia‑induced apoptosis in osteoblast cells.Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon anti HSV (II) gB IgG1 (mo anti HCMV IE pp65 IgG1 (m anti HCMV gB IgG1 (monocl Human Epstein-Barr Virus Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu
#28586911 2017/06/06 Save this To Up
SERPINA3K Ameliorates the Corneal Oxidative Injury Induced by 4-Hydroxynonenal.We previously demonstrated that SERPINA3K has anti-inflammatory, antiangiogenic, and antioxidant effects in corneas. Here we further investigated the effects of SERPINA3K on the corneal oxidant injury setting recently developed and induced by 4-hydroxynonenal (4-HNE).
1149 related Products with: SERPINA3K Ameliorates the Corneal Oxidative Injury Induced by 4-Hydroxynonenal.Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon Anti AGO2 Human, Monoclon Anti AGO2 Mouse, Monoclon OXI TEK (Oxidative Stress BACTERIOLOGY BACTEROIDES Human Epstein-Barr Virus Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu Jurkat Cell Extract (Indu Mouse Epstein-Barr Virus
#28257568 2017/03/03 Save this To Up
Integrated Computational Protocol for the Analysis of Quadrupolar Splittings from Natural-Abundance Deuterium NMR Spectra in (Chiral) Oriented Media.Despite its low natural abundance, deuterium NMR spectroscopy in weakly oriented (chiral) solvents gives easy access to deuterium residual quadrupolar couplings ((2) H-RQCs). These are formally equivalent to one-bond residual dipolar couplings (((13) C-(1) H)-RDCs) for calculation of the Saupe tensor, and provide similar information for the study of molecular structure and orientational behavior. Because the quadrupolar interaction is one order of magnitude larger than the dipolar one, (2) H-RQC analysis is a much more sensitive tool for the detection of subtle structural differences and also tiny differences in molecular alignment, such as those observed for different enantiomers in chirally aligned media. To promote the analytical advantages of anisotropic, natural-abundance deuterium NMR (NAD NMR) spectroscopy in the organic chemistry community, we describe a (2) H-RQC/DFT-based integrated computational protocol for the evaluation of the order parameters of aligned solutes by using singular-value decomposition. Several examples of (2) H-RQC-assisted analysis of chiral and prochiral molecules dissolved in various polypeptide lyotropic chiral liquid crystals are reported. The role of the molecular shape in the ordering mechanism was investigated through the determination of intertensor angles between alignment tensors and inertia tensors by using the proposed protocol.
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#28223550 2017/02/22 Save this To Up
NADH autofluorescence, a new metabolic biomarker for cancer stem cells: Identification of Vitamin C and CAPE as natural products targeting "stemness".Here, we assembled a broad molecular "tool-kit" to interrogate the role of metabolic heterogeneity in the propagation of cancer stem-like cells (CSCs). First, we subjected MCF7 cells to "metabolic fractionation" by flow cytometry, using fluorescent mitochondrial probes to detect PCG1α activity, as well ROS and hydrogen-peroxide (H2O2) production; NADH levels were also monitored by auto-fluorescence. Then, the various cell populations were functionally assessed for "stem cell activity", using the mammosphere assay (3D-spheroids). Our results indicate that a sub-population of MCF7 cells, with increased PGC1α activity, high mitochondrial ROS/H2O2 production and high NADH levels, all form mammospheres with a higher efficiency. Thus, it appears that mitochondrial oxidative stress and the anti-oxidant response both contribute to the promotion of mitochondrial biogenesis and oxidative metabolism in CSCs. Further validation was provided by using specific inhibitors to target metabolic processes (the NAD+ salvage pathway, glycolysis, mitochondrial protein synthesis and OXPHOS), significantly reducing CSC propagation. As a consequence, we have now identified a variety of clinically-approved drugs (stiripentol), natural products (caffeic acid phenyl ester (CAPE), ascorbic acid, silibinin) and experimental pharmaceuticals (actinonin, FK866, 2-DG), that can be used to effectively inhibit CSC activity. We discuss the use of CAPE (derived from honey-bee propolis) and Vitamin C, as potential natural therapeutic modalities. In this context, Vitamin C was ~10 times more potent than 2-DG for the targeting of CSCs. Similarly, stiripentol was between 50 to 100 times more potent than 2-DG.
2042 related Products with: NADH autofluorescence, a new metabolic biomarker for cancer stem cells: Identification of Vitamin C and CAPE as natural products targeting "stemness".Arsenic Trichloride AsCl3 MarkerGene™ LysoLive™ Anti HTLV I gp46 Clone 65 MONOBODIES (Monoclonal An Amplite™ Colorimetric N Triglyceride Assay Kit Li GLP 1 ELISA Kit, Rat Gluc Glucose Assay With the La Cultrex In Vitro Angiogen CometAssay Control Cells Neutral CometAssay Contro N-Acetyl-4,6-(p-methoxybe
#27822011 2016/11/08 Save this To Up
Ursolic acid sensitizes cisplatin-resistant HepG2/DDP cells to cisplatin via inhibiting Nrf2/ARE pathway.Combinations of adjuvant sensitizers with anticancer drugs is a promising new strategy to reverse chemoresistance. Ursolic acid (UA) is one of the natural pentacyclic triterpene compounds known to have many pharmacological characteristics such as anti-inflammatory and anticancer properties. This study investigates whether UA can sensitize hepatocellular carcinoma cells to cisplatin.
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#27469140 2016/09/01 Save this To Up
Isoflurane Preconditioning Induces Neuroprotection by Up-Regulation of TREK1 in a Rat Model of Spinal Cord Ischemic Injury.This study aimed to explore the neuroprotection and mechanism of isoflurane on rats with spinal cord ischemic injury. Total 40 adult male Sprague-Dawley rats were divided into the four groups (n=10). Group A was sham-operation group; group B was ischemia group; group C was isoflurane preconditioning group; group D was isoflurane preconditioning followed by ischemia treatment group. Then the expressions of TWIK-related K⁺ channel 1 (TREK1) in the four groups were detected by immunofluorescent assay, real time-polymerase chain reactions (RT-PCR) and western blot. The primary neurons of rats were isolated and cultured under normal and hypoxic conditions. Besides, the neurons under two conditions were transfected with green fluorescent protein (GFP)-TREK1 and lentivirual to overexpress and silence TREK1. Additionally, the neurons were treated with isoflurane or not. Then caspase-3 activity and cell cycle of neurons under normal and hypoxic conditions were detected. Furthermore, nicotinamide adenine dinucleotide hydrate (NADH) was detected using NAD+/NADH quantification colorimetric kit. Results showed that the mRNA and protein expressions of TREK1 increased significantly in group C and D. In neurons, when TREK1 silenced, isoflurane treatment improved the caspase-3 activity. In hypoxic condition, the caspase-3 activity and sub-G1 cell percentage significantly increased, however, when TREK1 overexpressed the caspase-3 activity and sub-G1 cell percentage decreased significantly. Furthermore, both isoflurane treatment and overexpression of TREK1 significantly decreased NADH. In conclusion, isoflurane-induced neuroprotection in spinal cord ischemic injury may be associated with the up-regulation of TREK1.
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#27255033 2016/06/03 Save this To Up
[Expression and significance of Nrf2/ARE pathway ralated factors in the HepG2 cell model of steatosis].To explore a new method of establishing HepG2 cell model of steatosis and observe the expression and significance of nuclear factor erythroid-2p45-related factor 2(Nrf2)/antioxidative response element (ARE) pathway related factors in HepG2 cells of steatosis.
2945 related Products with: [Expression and significance of Nrf2/ARE pathway ralated factors in the HepG2 cell model of steatosis].Cell cycle antibody array Cell Cycle Phospho-Specif T-Cell Receptor Signaling Biocidal ZF, spray disinf Biocidal ZF, spray disinf Biocidal ZF, spray disinf anti HSV (II) gB IgG1 (mo anti HCMV IE pp65 IgG1 (m anti HCMV gB IgG1 (monocl CELLKINES Natural Human I CELLKINES INTERLEUKIN 2 ( CELLKINES INTERLEUKIN 2 (
#26969764 2016/05/02 Save this To Up
Miltirone induced mitochondrial dysfunction and ROS-dependent apoptosis in colon cancer cells.To study the characteristics of miltirone-induced anti-colon cancer effects.
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#26781848 2016/04/07 Save this To Up
Allicin attenuates H₂O₂-induced cytotoxicity in retinal pigmented epithelial cells by regulating the levels of reactive oxygen species.Retinal pigmented epithelial cell (RPE) oxidative stress is known to have a vital role in the etiology of age‑related macular degeneration (AMD). The present study aimed to investigate whether allicin, a natural product with antioxidant activity, was able to protect RPEs (ARPE‑19) from hydrogen peroxide (H2O2)‑induced damage, and to determine the underlying mechanisms. The 3-(4,5-dimethylthiazol-2-yl)-2,5‑diphenyl tetrazolium bromide assay was used to determine cellular viability, and reactive oxygen species (ROS) were detected using a ROS Assay kit. The results demonstrated that allicin was able to protect ARPE‑19 cells from H2O2‑induced damage in a dose‑dependent manner. In addition, allicin attenuated oxidative stress by reducing the levels of intracellular ROS and malondialdehyde (MDA), and enhancing the glutathione/glutathione disulfide (GSSG) ratio. With regards to the underlying mechanism, allicin was able to markedly modulate the expression levels of ROS‑associated enzymes, including superoxide dismutase, NADPH oxidase 4 and NAD(P)H dehydrogenase quinone 1, and elevate the activity of nuclear factor erythroid 2‑related factor 2 in the H2O2‑stimulated ARPE‑19 cells. These results suggested that allicin may exert protective effects against H2O2‑induced cytotoxicity in RPEs via ROS regulation.
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