Merck
Search Within
Filtros aplicados
Palabra clave:'779539'
Mostrando 1-30 of 154 resultados for "

779539

" en el plazo de Papeles
Beatrice Bocca et al.
Annali dell'Istituto superiore di sanita, 41(2), 197-203 (2005-10-26)
The haematic concentration of 26 metals and the oxidative damage in 60 patients (20 males and 40 females) affected by Alzheimer's disease and 44 healthy individuals (33 males and 11 females) were compared. In patients, the following significant (p <
Tine N Vinther et al.
Protein science : a publication of the Protein Society, 22(3), 296-305 (2013-01-03)
Insulin is a key hormone controlling glucose homeostasis. All known vertebrate insulin analogs have a classical structure with three 100% conserved disulfide bonds that are essential for structural stability and thus the function of insulin. It might be hypothesized that
F Rousaud et al.
Archivos espanoles de urologia, 54(9), 989-996 (2002-01-16)
Cystine renal stone is the only clinical consequence of cystinuria, an autosomal recessive hereditary disease that affects an average of 1 out of 7,000 newborns, and whose geographical distribution varies significantly. The diagnosis and treatment of this condition is reviewed
Majed J Dasouki et al.
Blood, 122(20), 3440-3449 (2013-10-03)
We recently identified 2 siblings afflicted with idiopathic, autosomal recessive aplastic anemia. Whole-exome sequencing identified a novel homozygous missense mutation in thrombopoietin (THPO, c.112C>T) in both affected siblings. This mutation encodes an arginine to cysteine substitution at residue 38 or
Mark G Jones et al.
Clinica chimica acta; international journal of clinical chemistry, 361(1-2), 150-158 (2005-07-05)
Previous work by others have suggested the occurrence of one or more chemical or metabolic 'markers' for ME/CFS including specific amino acids and organic acids and a number of unidentified compounds (CFSUM1, CFSUM2). We have shown elsewhere that CFSUM1 is
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
Orna Avsian-Kretchmer et al.
Molecular endocrinology (Baltimore, Md.), 18(1), 1-12 (2003-10-04)
TGF-beta family proteins with a cystine knot motif serve as ligands for diverse families of plasma membrane receptors. Bone morphogenetic protein (BMP) antagonists represent a subgroup of these proteins, some of which bind BMPs and antagonize their actions during development
T Peters et al.
Human molecular genetics, 12(17), 2109-2120 (2003-08-19)
Cystinuria, one of the most common inborn errors of metabolism in humans, accounts for 1-2% of all cases of renal lithiasis. It is caused by defects in the heterodimeric transporter system rBAT/b0,+AT, which lead to reduced reabsorption of cystine and
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
G J McBean et al.
Biochemical Society transactions, 29(Pt 6), 717-722 (2001-11-16)
The transport of L-cystine into cells of the mammalian brain is an essential step in the supply of cysteine for synthesis of the antioxidant glutathione. Uptake of L-cystine in rat brain synaptosomes occurs by three mechanisms that are distinguishable on
Luis M Laglera et al.
Analytica chimica acta, 836, 24-33 (2014-07-01)
Thiols are compounds of paramount importance in the cellular metabolism due to their double detoxifying role as radical scavengers and trace metal ligands. However, we have scarce information about their extracellular cycling as limited data are available about their concentration
Jennifer L Johnson et al.
Molecular and cellular biology, 33(15), 2950-2962 (2013-05-30)
Cystinosis is a lysosomal storage disorder caused by the accumulation of the amino acid cystine due to genetic defects in the CTNS gene, which encodes cystinosin, the lysosomal cystine transporter. Although many cellular dysfunctions have been described in cystinosis, the
Philipp Albrecht et al.
CNS & neurological disorders drug targets, 9(3), 373-382 (2010-01-08)
The glutamate/cystine antiporter system x(c)- transports cystine into cells in exchange for the important neurotransmitter glutamate at a ratio of 1:1. It is composed of a specific light chain, xCT, and a heavy chain, 4F2, linked by a disulfide bridge.
Brad R Green et al.
The FEBS journal, 281(13), 2885-2898 (2014-05-13)
Inhibitors of the α-subunit of the voltage-gated sodium channel subtype 1.3 (NaV 1.3) are of interest as pharmacological tools for the study of neuropathic pain associated with spinal cord injury and have potential therapeutic applications. The recently described μ-conotoxin BuIIIB
Anna Walter et al.
Neurobiology of aging, 25(10), 1299-1303 (2004-10-07)
Experimental and clinical studies give evidence for breakdown of membrane phospholipids during neurodegeneration. In the present study, we measured the levels of glycerophosphocholine (GPCh), phosphocholine (PCh), and choline, that is, water-soluble metabolites of phosphatidylcholine (PtdCho), in human cerebrospinal fluid (CSF).
Kevin Guo et al.
Analytical chemistry, 81(10), 3919-3932 (2009-03-25)
We report a new quantitative metabolome profiling technique based on differential (12)C-/(13)C-isotope dansylation labeling of metabolites, fast liquid chromatography (LC) separation and electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry (ESI-FTICR MS) detection. An isotope reagent, (13)C-dansyl chloride, can be
M Naoi et al.
Mechanisms of ageing and development, 111(2-3), 175-188 (2000-02-03)
Dopamine neurons in the substantia nigra of human brain are selectively vulnerable and the number decline by aging at 5-10% per decade. Enzymatic and non-enzymatic oxidation of dopamine generates reactive oxygen species, which induces apoptotic cell death in dopamine neurons.
Young-Mi Go et al.
Critical reviews in biochemistry and molecular biology, 48(2), 173-181 (2013-01-30)
Rapid advances in redox systems biology are creating new opportunities to understand complexities of human disease and contributions of environmental exposures. New understanding of thiol-disulfide systems have occurred during the past decade as a consequence of the discoveries that thiol
Yongjun Gao et al.
Journal of medicinal chemistry, 56(19), 7574-7589 (2013-09-21)
A new series of derivatives of 3-(1,4-diazabicyclo[3.2.2]nonan-4-yl)dibenzo[b,d]thiophene 5,5-dioxide with high binding affinities and selectivity for α7-nicotinic acetylcholine receptors (α7-nAChRs) (Ki = 0.4-20 nM) has been synthesized for positron emission tomography (PET) imaging of α7-nAChRs. Two radiolabeled members of the series
Michael Thiele et al.
Journal of immunology (Baltimore, Md. : 1950), 195(5), 2343-2352 (2015-07-26)
Macrophage migration inhibitory factor (MIF), a proinflammatory cytokine and counterregulator of glucocorticoids, is a potential therapeutic target. MIF is markedly different from other cytokines because it is constitutively expressed, stored in the cytoplasm, and present in the circulation of healthy
Arisa Higa et al.
Molecular and cellular biology, 34(10), 1839-1849 (2014-03-19)
ATF6α, a membrane-anchored transcription factor from the endoplasmic reticulum (ER) that modulates the cellular response to stress as an effector of the unfolded-protein response (UPR), is a key player in the development of tumors of different origin. ATF6α activation has
S Engelborghs et al.
Neurochemical research, 28(8), 1145-1150 (2003-07-02)
To study changes in amino acid metabolism and biogenic amines in Parkinson's disease, we set up a prospective study and measured biogenic amines, their main metabolites, and 22 different amino acids, in cerebrospinal fluid of Parkinson's disease patients (n =
Zhimin Feng et al.
The FEBS journal, 280(14), 3365-3375 (2013-05-11)
Previously, we reported that human β-defensin (hBD)-3 can both antagonize CXCR4 function on T cells and promote receptor internalization in the absence of activation. In the present study, we explored the important structural elements of hBD-3 that are involved in
P A LeWitt et al.
Neurology, 42(11), 2111-2117 (1992-11-01)
We used two analytic methods (a multichannel coulometric electrode array with high-performance liquid chromatography, and gas chromatography-mass spectrophotometry) to measure CSF dopamine (DA) and its metabolites in mildly affected, unmedicated subjects with Parkinson's disease (PD). The mean (+/- SD) concentration
Ajmila Islam et al.
Nutrition and cancer, 67(8), 1283-1292 (2015-10-17)
We previously found red wheat more effective than white wheat in reducing colon cancer risk in rats when fed during initiation and postinitiation stages. Here we examine the effect of wheat on colon cancer risk in early and late postinitiation
Liyun Zhang et al.
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 18(2), 277-286 (2013-01-24)
The purpose of this work is to characterize the interactions of two disulfide-constrained cyclic tetrapeptides [c(Ac-Cys-Pro-Phe-Cys-NH(2)), SS1; c(Ac-Cys-Pro-Gly-Cys-NH(2)), SS2] with Cu(2+) ions in order to facilitate the design of cyclic peptides as sensors for metal ions. The Cu(2+)-peptide complex cations
K Sakhaee
Seminars in nephrology, 16(5), 435-447 (1996-09-01)
Cystinuria is an inheritable disorder of amino acid transport, transmitted as an autosomal recessive trait, Cystinuria is caused by defective transport of cystine and dibasic amino acids through the epithelial cells of the renal tubule and intestinal tract. Cystine stones
Mehdi Irani et al.
Biochemistry, 52(7), 1280-1289 (2013-01-22)
Molecular dynamics simulations have been performed on lipase B from Candida antarctica (CalB) in its native form and with one or two oxidized residues, either methionine oxidized to methionine sulfoxide, tryptophan oxidized to 5-hydroxytryptophan, or cystine oxidized to a pair
Hanayo Ueoka-Nakanishi et al.
The FEBS journal, 280(14), 3220-3231 (2013-04-26)
Thioredoxin (Trx) is a key player in redox homeostasis in various cells, modulating the functions of target proteins by catalyzing a thiol-disulfide exchange reaction. Target proteins of cytosolic Trx-h of higher plants were studied, particularly in the plasma membrane, because
J Kunert
Acta Universitatis Palackianae Olomucensis Facultatis Medicae, 123, 351-364 (1989-01-01)
Thirty fungal species from various taxonomic and ecologic groups were cultivated on two glucose-peptone media enriched with cystine (3 mmol/l). Nineteen species showed certain ability to utilize cystine not only as a source of sulfur but that of carbon and
Página 1 de 6
Página 1 de 6