Search results for "Dehydrogenases"

showing 5 items of 55 documents

Bone marrow-derived progenitors are greatly reduced in patients with severe COPD and low-BMI.

2009

Chronic obstructive pulmonary disease (COPD) patients have reduced circulating hemopoietic progenitors. We hypothesized that severity of COPD parallels the decrease in progenitors and that the reduction in body mass index (BMI) could be associated with more severe bone marrow dysfunction. We studied 39 patients with moderate to very severe COPD (18 with low-BMI and 21 with normal-BMI) and 12 controls. Disease severity was associated to a greater reduction in circulating progenitors. Proangiogenetic and inflammatory markers correlated with disease severity parameters. Compared to normal-BMI patients, low-BMI patients showed: greater reduction in circulating progenitors; higher VEGF-A, VEGF-C…

aged; analysis of variance; antigens; blood; blood cell count; body mass index; bone marrow transplantation; case-control studies; cd; chronic obstructive; chronic obstructive pulmonary disease; colony-forming units assay; creatine kinase; cytokines; endothelial cells; enzyme-linked immunosorbent assay; fat-free mass; female; humans; intercellular signaling peptides and proteins; lactate dehydrogenases; low-bmi copd; male; metabolism; methods; middle aged; normal-bmi copd; physiology; physiopathology/surgery; pulmonary disease; severity of illness index; statistics as topicMalePathologyPhysiologyStatistics as TopicCD34GastroenterologySeverity of Illness IndexBody Mass IndexPulmonary Disease Chronic Obstructiveantigenslow-bmi copdnormal-bmi copdCreatine Kinasepulmonary diseaseBone Marrow TransplantationCOPDchronic obstructiveGeneral NeuroscienceRespiratory diseaseMiddle Agedcdfat-free massHaematopoiesismedicine.anatomical_structurephysiopathology/surgeryCytokinesIntercellular Signaling Peptides and ProteinsFemalePulmonary and Respiratory Medicinemedicine.medical_specialtyEnzyme-Linked Immunosorbent Assaymacromolecular substancesSettore MED/10 - Malattie Dell'Apparato Respiratoriochronic obstructive pulmonary diseasemethodsColony-Forming Units AssayChronic obstructive pulmonary disease low-BMI COPD normal-BMI COPD fat-free massbloodAntigens CDInternal medicineSeverity of illnessmedicineHumansProgenitor cellLactate DehydrogenasesAgedAnalysis of Variancebusiness.industryCase-control studyEndothelial Cellsmedicine.diseaseBlood Cell CountCase-Control StudiesBone marrowbusinessmetabolismRespiratory physiologyneurobiology
researchProduct

The catalytic mechanism of glyceraldehyde 3-phosphate dehydrogenase from Trypanosoma cruzi elucidated via the QM/MM approach

2013

Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has been identified as a key enzyme involved in glycolysis processes for energy production in the Trypanosoma cruzi parasite. This enzyme catalyses the oxidative phosphorylation of glyceraldehyde 3-phosphate (G3P) in the presence of inorganic phosphate (Pi) and nicotinamide adenosine dinucleotide (NAD+). The catalytic mechanism used by GAPDH has been intensively investigated. However, the individual roles of Pi and the C3 phosphate of G3P (Ps) sites, as well as some residues such as His194 in the catalytic mechanism, remain unclear. In this study, we have employed Molecular Dynamics (MD) simulations within hybrid quantum mechanical/molecular …

biocatalysisEnzims proteolíticsParàsitsStereochemistryTrypanosoma cruziGeneral Physics and AstronomyDehydrogenaseMolecular Dynamics SimulationNicotinamide adenine dinucleotideOxidative PhosphorylationSubstrate Specificityglyceraldehyde 3 phosphate dehydrogenaseQM/MMchemistry.chemical_compoundstomatognathic systemGlyceraldehydePhysical and Theoretical Chemistrynicotinamide adenine dinucleotideGlyceraldehyde 3-phosphate dehydrogenasechemistry.chemical_classificationbiologyGlyceraldehyde-3-Phosphate DehydrogenasesActive siteNADmolecular dynamicsEnzymechemistryBiochemistryBiocatalysisbiology.proteinQuantum TheoryNAD+ kinaseOxidation-ReductionPhysical Chemistry Chemical Physics
researchProduct

The Candida albicans cell wall-associated glyceraldehyde-3-phosphate dehydrogenase activity increases in response to starvation and temperature upshi…

2002

We have determined the effect of environmental factors (mild thermal upshift and starvation) on the Candida albicans cell wall-associated glyceraldehyde-3-phosphate dehydrogenase (cwGAPDH) activity. Temperature upshift (from 28 to 37 degrees C) and/ or starvation (at 28 or 37 degrees C in water) of exponentially growing yeast cells caused an increase in cwGAPDH activity (3 to 5-, and 7 to 8-fold, respectively). This increase in activity did not correlate with an increase in the amount of cwGAPDH protein present, as determined by flow cytometry, immunoelectron microscopy and Western-blotting. These results indicate that thermal upshift and starvation cause an activation of the cwGAPDH in C. …

biologymedicine.diagnostic_testImmunoelectron microscopyTemperatureGlyceraldehyde-3-Phosphate DehydrogenasesDehydrogenaseGeneral Medicinebiology.organism_classificationYeastCorpus albicansFlow cytometryCell wallFungal ProteinsInfectious DiseasesBiochemistryCell WallCandida albicansbiology.proteinmedicineCandida albicansGlyceraldehyde 3-phosphate dehydrogenaseMedical mycology
researchProduct

16α-Iodo-3,17β-estradiol: A stable ligand for estrogen receptor determinations in tissues with high 17β-hydroxysteroid dehydrogenase activity

1983

Recently, the successful synthesis of radioiodinated 16 alpha-iodo-3,17 beta-estradiol-[125I] [125I]E2 was reported [1]. This new ligand has similar binding characteristics to the estrogen receptor (ER) [2-5] as the currently used tritium labeled estradiol [3H]E2. However, it offers several advantageous features: (a) high specific activity (theoretically 2,000 Ci/mmol) [1]; (b) minor problems with radioactive waste due to its short half life and (c) the possibility of simultaneous determination of ER and progesterone receptors (PgR) by double labeling with [125I]E2 and [3H]R5020 [6, 7]. As we are presently trying to determine ER and PgR in human placental cytosols we were interested in the …

medicine.medical_specialty17-Hydroxysteroid DehydrogenasesPlacentaEstrogen receptorEstroneOvaryLigandsTritiumEndometriumBiochemistryIodine Radioisotopeschemistry.chemical_compoundEndocrinologyPregnancyInternal medicinemedicineHumansHydroxysteroid dehydrogenaseReceptorEstradiolChemistryHalf-lifeLigand (biochemistry)Kineticsmedicine.anatomical_structureEndocrinologyReceptors EstrogenBiochemistryFemalehormones hormone substitutes and hormone antagonistsJournal of Steroid Biochemistry
researchProduct

Comparison of oxidoreductive enzyme activities in three coal tar creosote-contaminated soils

2019

This study used laboratory experiments to compare the effects of coal tar creosote on the activity of oxidoreductive enzymes in sandy loam, loamy sand and sandy clay loam soils. Different amounts of coal tar creosote were added to soil samples as follows: 0 (control), 2, 10 or 50 g kg–1 dry matter. The activity of soil dehydrogenases (DHAs), o-diphenol oxidase (o-DPO), catalase (CAT), nitrate reductase (NR) and peroxidases (POX) was determined. Contamination of soil with coal tar creosote affected oxidoreductase activity. Oxidoreductive enzyme activity following soil contamination with coal tar creosote was in the following order: DHAs > CAT > NR > POX > o-DPO in…

nitrate reductaseSoil testvirusespolycyclic aromatic hydrocarbonsSoil Science010501 environmental sciencesEnvironmental Science (miscellaneous)Nitrate reductasecomplex mixtures01 natural scienceslaw.inventionresistance indexBioremediationlawotorhinolaryngologic diseasesmedicineCoal tar0105 earth and related environmental sciencesEarth-Surface ProcessesChemistrycatalasedehydrogenases04 agricultural and veterinary sciencesSoil contaminationCreosoteEnvironmental chemistryLoamSoil water040103 agronomy & agriculture0401 agriculture forestry and fisheriesperoxidasesmedicine.drugSoil Research
researchProduct