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30089

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Hong-Yan Lin et al.
Biochemical pharmacology, 96(2), 93-106 (2015-05-11)
The high incidence of cancer and the side effects of traditional anticancer drugs motivate the search for new and more effective anticancer drugs. In this study, we synthesized 17 kinds of aryl dihydrothiazol acyl shikonin ester derivatives and evaluated their
T Rajah et al.
Toxicology and applied pharmacology, 278(2), 100-106 (2014-04-29)
The caspase inhibitor benzyloxycarbony (Cbz)-l-Val-Ala-Asp (OMe)-fluoromethylketone (z-VAD-FMK) has recently been shown to inhibit T cell proliferation without blocking caspase-8 and caspase-3 activation in primary T cells. We showed in this study that z-VAD-FMK treatment leads to a decrease in intracellular
Jung-Sub Park et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(27), 9911-9916 (2014-06-25)
Noise-induced hearing loss is one of the most common types of sensorineural hearing loss. In this study, we examined the expression and localization of leukotriene receptors and their respective changes in the cochlea after hazardous noise exposure. We found that
AeRyon Kim et al.
Nature communications, 5, 5369-5369 (2014-11-22)
Immunodominant epitopes are few selected epitopes from complex antigens that initiate T-cell responses. Here to provide further insights into this process, we use a reductionist cell-free antigen-processing system composed of defined components. We use the system to characterize steps in
Satu Päiväläinen et al.
Journal of neurochemistry, 84(3), 533-545 (2003-02-01)
The myelin-associated glycoprotein (MAG) is a transmembrane cell adhesion molecule participating in myelin formation and maintenance. Calcium-activated/-dependent proteolysis of myelin-associated glycoprotein by calpain and cathepsin L-like activities has already been detected in purified myelin fractions, producing a soluble fragment, called
Marko Fonović et al.
Biochimica et biophysica acta, 1840(8), 2560-2570 (2014-04-01)
Cysteine cathepsins are normally found in the lysosomes where they are involved in intracellular protein turnover. Their ability to degrade the components of the extracellular matrix in vitro was first reported more than 25years ago. However, cathepsins were for a
Edward T Chouchani et al.
Nature medicine, 19(6), 753-759 (2013-05-28)
Oxidative damage from elevated production of reactive oxygen species (ROS) contributes to ischemia-reperfusion injury in myocardial infarction and stroke. The mechanism by which the increase in ROS occurs is not known, and it is unclear how this increase can be
Kohei Togami et al.
Biological & pharmaceutical bulletin, 38(2), 270-276 (2015-03-10)
In the present in vitro study, we assessed the delivery of pirfenidone incorporated into liposomes modified with truncated basic fibroblast growth factor (tbFGF) to lung fibroblasts and investigated the anti-fibrotic effect of the drug. The tbFGF peptide, KRTGQYKLC, was used
S Iyer et al.
The Journal of biological chemistry, 276(15), 12153-12161 (2000-11-19)
The angiogenic molecule placenta growth factor (PlGF) is a member of the cysteine-knot family of growth factors. In this study, a mature isoform of the human PlGF protein, PlGF-1, was crystallized as a homodimer in the crystallographic asymmetric unit, and
Elisabeth Eckert et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 965, 54-60 (2014-07-06)
We developed and validated an analytical method for the simultaneous determination of methyl mercapturic acid (MeMA), ethyl mercapturic acid (EtMA), n-propyl mercapturic acid (PrMA) and iso-propyl mercapturic acid (iPrMA) in human urine. These alkyl mercapturic acids are known or presumed
Ronald A Thisted et al.
Clinical therapeutics, 28(10), 1607-1618 (2006-12-13)
Pain associated with diabetic peripheral neuropathy (DPN) has a substantial negative impact on patients' quality of life. The primary objective of this study was to evaluate the tolerability of capsules containing dextromethorphan (DM) and quinidine (Q) in patients with painful
Aubérie Parent et al.
Nature communications, 6, 5686-5686 (2015-01-20)
Friedreich's ataxia is a severe neurodegenerative disease caused by the decreased expression of frataxin, a mitochondrial protein that stimulates iron-sulfur (Fe-S) cluster biogenesis. In mammals, the primary steps of Fe-S cluster assembly are performed by the NFS1-ISD11-ISCU complex via the
Seema Joshi et al.
Human & experimental toxicology, 24(1), 13-17 (2005-02-25)
L-histidine, L-cysteine, reduced glutathione (GSH) and other bioligands, which are ubiquitously present in biological systems, are recognized as antioxidants. Studies have shown that nickel (II) complexed with these ligands catalyzes the disproportionation of H2O2, leading to the generation of hydroxyl
Cédric Montigny et al.
The Journal of biological chemistry, 289(49), 33850-33861 (2014-10-11)
Sarcolipin (SLN) is a regulatory peptide present in sarcoplasmic reticulum (SR) from skeletal muscle of animals. We find that native rabbit SLN is modified by a fatty acid anchor on Cys-9 with a palmitic acid in about 60% and, surprisingly
Janina Schmitz et al.
ChemMedChem, 10(8), 1365-1377 (2015-06-30)
Cleavage of the invariant chain is the key event in the trafficking pathway of major histocompatibility complex class II. Cathepsin S is the major processing enzyme of the invariant chain, but cathepsin F acts in macrophages as its functional synergist which is as
Jiangge Zheng et al.
Biochemical and biophysical research communications, 456(3), 737-742 (2014-12-20)
Locusta migratoria (Lmig) causes enormous losses to agricultural products, especially because it often infests the world with great swarms as locust plagues. Locusts find their plant hosts on which they feed through their olfactory system, in which odorant binding proteins
R Zagrodnik et al.
Bioresource technology, 200, 1039-1043 (2015-11-26)
The role of light intensity on biohydrogen production from glucose by Clostridium beijerinckii, Clostridium acetobutylicum, and Rhodobacter sphaeroides was studied to evaluate the performance and possible application in co-culture fermentation system. The applied source of light had spectrum similar to
Takeshi Hano et al.
Bulletin of environmental contamination and toxicology, 95(3), 340-343 (2015-04-24)
We evaluated the bioconcentration and elimination of polycarbamate, a popular antifoulant classified as a dithiocarbamate fungicide, in a marine teleost fish, mummichog (Fundulus heteroclitus), and a polychaete (Perinereis nuntia). Following polycarbamate exposure and depuration, the calculated bioconcentration factor (BCF) and
Paul J Kennedy et al.
Psychopharmacology, 232(8), 1357-1371 (2014-10-24)
A visuospatial episodic memory impairment has recently been identified in irritable bowel syndrome. Increased tryptophan metabolism along the kynurenine pathway has also been reported in irritable bowel syndrome, which may play a role in altered cognitive performance as peripheral kynurenine
Wei Li et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 963, 113-118 (2014-06-21)
A rapid and sensitive liquid chromatography-mass spectrometry (LC-MS) method was developed and validated for the simultaneous determination of microcystin-RR (MC-RR) and its glutathione and cysteine conjugates (MC-RR-GSH and MC-RR-Cys, respectively) in fish plasma and bile. The analytes were extracted using
Shekhar U Kadam et al.
Ultrasonics sonochemistry, 23, 308-316 (2014-12-03)
The objective of this study was to investigate the effect of key extraction parameters of extraction time (5-25 min), acid concentration (0-0.06 M HCl) and ultrasound amplitude (22.8-114 μm) on yields of bioactive compounds (total phenolics, fucose and uronic acid)
V Calabrese et al.
Neurochemical research, 28(9), 1321-1328 (2003-08-27)
Recent studies suggest that NO and its reactive derivative peroxynitrite are implicated in the pathogenesis of multiple sclerosis (MS). Patients dying with MS demonstrate increased astrocytic inducible nitric oxide synthase activity, as well as increased levels of iNOS mRNA. Peroxynitrite
Jonathan M Ostrem et al.
Nature, 503(7477), 548-551 (2013-11-22)
Somatic mutations in the small GTPase K-Ras are the most common activating lesions found in human cancer, and are generally associated with poor response to standard therapies. Efforts to target this oncogene directly have faced difficulties owing to its picomolar
Jan Rybniker et al.
The Biochemical journal, 459(3), 467-478 (2014-02-20)
The complex multiprotein systems for the assembly of protein-bound iron-sulfur (Fe-S) clusters are well defined in Gram-negative model organisms. However, little is known about Fe-S cluster biogenesis in other bacterial species. The ISC (iron-sulfur cluster) operon of Mycobacterium tuberculosis lacks
Jonathan F Fay et al.
Biochemistry, 52(46), 8286-8294 (2013-11-12)
The human cannabinoid receptor, CB1, a G protein-coupled receptor (GPCR), contains a relatively long (∼110 a.a.) amino terminus, whose function is still not defined. Here we explore a potential role for the CB1 N-terminus in modulating ligand binding to the
Arash Mirzahosseini et al.
Journal of pharmaceutical and biomedical analysis, 95, 184-192 (2014-03-29)
Cysteamine, cysteine, homocysteine, their homodisulfides and 9 related compounds were studied by ¹H NMR-pH titrations and case-tailored evaluation methods. The resulting acid-base properties are quantified in terms of 33 macroscopic and 62 microscopic protonation constants and the concomitant 16 interactivity
Xiaoying Koh-Stenta et al.
The Biochemical journal, 461(2), 323-334 (2014-05-03)
PRDM proteins have emerged as important regulators of disease and developmental processes. To gain insight into the mechanistic actions of the PRDM family, we have performed comprehensive characterization of a prototype member protein, the histone methyltransferase PRDM9, using biochemical, biophysical
Ana Stanic et al.
Journal of agricultural and food chemistry, 63(34), 7556-7566 (2015-08-06)
Conjugation of deoxynivalenol (DON) with sulfur compounds is recognized as a significant reaction pathway, and putative DON-glutathione (DON-GSH) conjugates have been reported in planta. To understand and control the reaction of trichothecenes with biologically important thiols, we studied the reaction
Xiaochun Guo et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 963, 54-61 (2014-06-16)
The roles of glutathione (GSH) and cysteine (Cys) in the detoxification of Microcystin-LR (MC-LR) have recently become a popular area of research. However, lacking analysis methods for MC-LR-GSH and MC-LR-Cys (two main GSH pathway metabolites) in mammals, elucidation of the
Susan T Stephenson et al.
The Journal of allergy and clinical immunology, 136(2), 454-461 (2015-03-10)
The mechanisms underlying glucocorticoid responsiveness are largely unknown. Although redox regulation of the glucocorticoid receptor (GR) has been reported, it has not been studied in asthmatic patients. We characterized systemic cysteine oxidation and its association with inflammatory and clinical features
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