Search results for "minas"

showing 10 items of 287 documents

Monitoring of transglutaminase crosslinking reaction by 1H NMR spectroscopy on model substrates

2015

International audience; A new method based on 1H NMR spectroscopy was developed for monitoring transglutaminase crosslinking reaction with model molecules (CBZ-Gln-Gly and N-α-acetyl-lysine). The transglutaminase reaction led to the appearance of new resonances on NMR spectrum as well as significant decrease in others. The new observed resonances, originated from newly formed ɛ-(γ-glutamyl)lysine isopeptide bonds, evidence the enzymatic reaction and allow to quantify the ɛ-(γ-glutamyl)lysine fragment. Moreover, the decrease in resonance intensity, originated from lysine, permit to determine the crosslinking degree. These results obtained by 1H NMR spectroscopy can be used as an alternative …

0106 biological sciences1h nmr spectroscopyTissue transglutaminaseLysineCrosslinking degreePhotochemistrycomplex mixtures01 natural sciences03 medical and health sciencesModel substratesɛ-(γ-glutamyl)-lysineColloid and Surface ChemistryLiquid chromatography–mass spectrometry010608 biotechnologyOrganic chemistryMolecule[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology030304 developmental biologyAlternative methods0303 health sciencesbiologyChemistryResonanceNuclear magnetic resonance spectroscopyMicrobial transglutaminasebiology.proteinColloids and Surfaces A: Physicochemical and Engineering Aspects
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Innovative food processing technologies on the transglutaminase functionality in protein-based food products: Trends, opportunities and drawbacks

2018

Abstract Background Consumption of protein-based food products has a key role in the improvement of human health. The crosslinking agent microbial transglutaminase (mTGase) is an effective and promising tool to modify animal proteins used in the food industry. Improvement in the gelation process, physicochemical and textural quality, and consumer's demand of protein-based food products could be attained by combining mTGase and some non-conventional food processing technologies. Scope and approach New perspectives and key areas for future research in the development of high-quality food proteins and protein-based products as a function of interaction effect of mTGase and some new processing …

0106 biological sciencesFood industrybiologybusiness.industryTissue transglutaminaseChemistrySonication04 agricultural and veterinary sciences040401 food science01 natural sciencesPascalization0404 agricultural biotechnology010608 biotechnologyFood productsSelf-healing hydrogelsFood processingbiology.proteinFood sciencebusinessMicrobial transglutaminaseFood ScienceBiotechnologyTrends in Food Science & Technology
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Exposure to a Highly Caloric Palatable Diet During Pregestational and Gestational Periods Affects Hypothalamic and Hippocampal Endocannabinoid Levels…

2016

Journal Article; Exposure to unbalanced diets during pre-gestational and gestational periods may result in long-term alterations in metabolism and behavior. The contribution of the endocannabinoid system to these long-term adaptive responses is unknown. In the present study, we investigated the impact of female rat exposure to a hypercaloric-hypoproteic palatable diet during pre-gestational, gestational and lactational periods on the development of male offspring. In addition, the hypothalamic and hippocampal endocannabinoid contents at birth and the behavioral performance in adulthood were investigated. Exposure to a palatable diet resulted in low weight offspring who exhibited low hypotha…

0301 basic medicine:Phenomena and Processes::Genetic Phenomena::Phenotype [Medical Subject Headings]hippocampus:Phenomena and Processes::Reproductive and Urinary Physiological Phenomena::Reproductive Physiological Phenomena::Postpartum Period::Lactation [Medical Subject Headings]Anxiety:Analytical Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Physical Examination::Body Constitution::Body Weights and Measures::Body Fat Distribution::Adiposity [Medical Subject Headings]Hippocampus:Psychiatry and Psychology::Behavior and Behavior Mechanisms::Behavior::Feeding Behavior::Food Preferences [Medical Subject Headings]Open fieldBehavioral NeuroscienceOleoylethanolamidechemistry.chemical_compound:Named Groups::Persons::Parents::Mothers [Medical Subject Headings]0302 clinical medicineLactation:Health Care::Environment and Public Health::Public Health::Environmental Pollution::Environmental Exposure::Maternal Exposure [Medical Subject Headings]maternal diethypothalamusMasculinoOriginal Research:Phenomena and Processes::Physiological Phenomena::Physiological Processes::Nutrition Processes::Weaning [Medical Subject Headings]Adipogenesis:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Hydrocarbons Acyclic::Alkenes::Polyunsaturated Alkamides [Medical Subject Headings]AnandamideanxietyEndocannabinoid systemEtanolaminasEndocannabinoidesExposición maternaAlcamidas poliinsaturadasNeuropsychology and Physiological Psychologymedicine.anatomical_structureAdiposidad:Chemicals and Drugs::Lipids::Fatty Acids::Fatty Acids Unsaturated::Fatty Acids Monounsaturated::Oleic Acids [Medical Subject Headings]CannabinoidesEmocionesGestationDieta:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Physiological Effects of Drugs::Hormones Hormone Substitutes and Hormone Antagonists::Hormones::Endocannabinoids [Medical Subject Headings]Fenotipo:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Terpenes::Cannabinoids [Medical Subject Headings]:Chemicals and Drugs::Lipids::Fatty Acids::Palmitic Acids [Medical Subject Headings]:Chemicals and Drugs::Lipids::Fatty Acids::Fatty Acids Unsaturated::Arachidonic Acids [Medical Subject Headings]medicine.medical_specialtyOffspringCognitive NeurosciencePreferencias alimentariasHypothalamus:Check Tags::Male [Medical Subject Headings]Development:Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Diet [Medical Subject Headings]Biologylcsh:RC321-571adipogenesisÁcidos oléicosAnsiedadRatas03 medical and health sciencesInternal medicineHipocampomedicineMaternal diet:Anatomy::Nervous System::Central Nervous System::Brain::Limbic System::Hippocampus [Medical Subject Headings]endocannabinoids:Psychiatry and Psychology::Behavior and Behavior Mechanisms::Emotions::Anxiety [Medical Subject Headings]lcsh:Neurosciences. Biological psychiatry. NeuropsychiatrydevelopmentÁcido araquidónicoCacaoPalmitoylethanolamideLactancia:Chemicals and Drugs::Organic Chemicals::Amines::Amino Alcohols::Ethanolamines [Medical Subject Headings]:Chemicals and Drugs::Lipids::Glycerides [Medical Subject Headings]:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Rodentia::Muridae::Murinae::Rats [Medical Subject Headings]030104 developmental biologyEndocrinologychemistryDestete:Organisms::Eukaryota::Plants::Viridiplantae::Streptophyta::Embryophyta::Angiosperms::Sterculiaceae::Cacao [Medical Subject Headings]:Psychiatry and Psychology::Behavior and Behavior Mechanisms::Emotions [Medical Subject Headings]MadresGlicéridosÁcidos palmíticos030217 neurology & neurosurgeryEndocannabinoidsNeuroscienceFrontiers in Behavioral Neuroscience
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Application of guidelines for the management of nonalcoholic fatty liver disease in three prospective cohorts of HIV-monoinfected patients

2020

Objectives: Current guidelines recommend use of a diagnostic algorithm to assess disease severity in cases of suspected nonalcoholic fatty liver disease (NAFLD). We applied this algorithm to HIV-monoinfected patients. Methods: We analysed three prospective screening programmes for NAFLD carried out in the following cohorts: the Liver Disease in HIV (LIVEHIV) cohort in Montreal, the Modena HIV Metabolic Clinic (MHMC) cohort and the Liver Pathologies in HIV in Palermo (LHivPa) cohort. In the LIVEHIV and LHivPa cohorts, NAFLD was diagnosed if the controlled attenuation parameter (CAP) was ≥ 248 dB/m; in the MHMC cohort, it was diagnosed if the liver/spleen Hounsfield unit (HU) ratio on abdomin…

0301 basic medicineAdultMalenonalcoholic fatty liver diseasemedicine.medical_specialtyCanadaHIV monoinfection; fibrosis-4; guidelines; nonalcoholic fatty liver disease; specialist referralHIV monoinfectionHIV InfectionsSeverity of Illness Index03 medical and health sciencesLiver disease0302 clinical medicineNon-alcoholic Fatty Liver DiseaseInternal medicineDiabetes mellitusNonalcoholic fatty liver diseasespecialist referralmedicineHumansPharmacology (medical)030212 general & internal medicineProspective Studiesbusiness.industryHealth Policyfibrosis-4Alanine TransaminaseHepatologyMiddle Agedmedicine.disease030112 virologyObesityInfectious DiseasesItalyCohortPractice Guidelines as TopicCoinfectionFemaleGuideline AdherencebusinessViral hepatitisTomography X-Ray ComputedguidelineAlgorithms
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Hepatoprotective effects of extracts, fractions and compounds from the stem bark of Pentaclethra macrophylla Benth: Evidence from in vitro and in viv…

2021

Abstract Aim To identify the bioactive hepatoprotective components of the ethanol extract of Pentaclethra macrophylla stem bark using in vitro and in vivo approaches. Methods The bioguided-fractionation of the ethanol extract was based on the substances’ capacity to prevent in vitro, the lipid peroxidation of hepatocytes’ membranes induced by hydrogen peroxide. For the in vivo hepatoprotective test, mice were treated orally with the ethyl acetate (EtOAc) fraction of the ethanol extract at doses of 50 and 75 mg/kg/day for one week and subjected to d -galactosamine/lipopolysaccharide (GaIN/LPS)-induced hepatotoxicity. Blood samples were collected for alanine aminotransferase (ALAT), aspartate…

0301 basic medicineAntioxidantPentaclethra macrophyllaIsolated compoundsmedicine.medical_treatmentInterleukin-1betaLipid peroxidationStructure-activity relationshipsRM1-950AntioxidantsLipid peroxidationSuperoxide dismutase03 medical and health scienceschemistry.chemical_compoundMice0302 clinical medicineIn vivomedicineAnimalsAspartate AminotransferasesRats WistarPharmacologybiologyTraditional medicinePlant StemsChemistryPlant ExtractsTumor Necrosis Factor-alphaBergeninAlanine TransaminaseFabaceaeGeneral MedicineGlutathioneDisease Models Animal030104 developmental biologyHepatoprotectionLiverCatalase030220 oncology & carcinogenesisbiology.proteinHepatocytesPlant BarkTherapeutics. PharmacologyChemical and Drug Induced Liver InjuryGaIN/LPSHepatoprotectionBiomedicine & Pharmacotherapy
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Externalized decondensed neutrophil chromatin occludes pancreatic ducts and drives pancreatitis

2016

Ductal occlusion has been postulated to precipitate focal pancreatic inflammation, while the nature of the primary occluding agents has remained elusive. Neutrophils make use of histone citrullination by peptidyl arginine deiminase-4 (PADI4) in contact to particulate agents to extrude decondensed chromatin as neutrophil extracellular traps (NETs). In high cellular density, NETs form macroscopically visible aggregates. Here we show that such aggregates form inside pancreatic ducts in humans and mice occluding pancreatic ducts and thereby driving pancreatic inflammation. Experimental models indicate that PADI4 is critical for intraductal aggregate formation and that PADI4-deficiency abrogates…

0301 basic medicineExtracellular TrapsHydrolasesNeutrophilsScienceGeneral Physics and AstronomyBiologyExtracellular TrapsArticleGeneral Biochemistry Genetics and Molecular BiologyMice03 medical and health sciencesPancreatic JuiceProtein-Arginine Deiminase Type 4medicineAnimalsHumansPancreasCeruletideMultidisciplinaryReverse Transcriptase Polymerase Chain ReactionQInterleukin-17Pancreatic DuctsGeneral ChemistryNeutrophil extracellular trapsFlow Cytometrymedicine.diseaseImmunohistochemistryChromatinCell biologyChromatinDisease Models AnimalHistone citrullination030104 developmental biologymedicine.anatomical_structurePancreatitisChronic DiseasePancreatic juiceImmunologyProtein-Arginine DeiminasesCytokinesPancreatitisPancreasCeruletideNature Communications
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Exome-Wide Association Study on Alanine Aminotransferase Identifies Sequence Variants in the GPAM and APOE Associated With Fatty Liver Disease.

2021

BACKGROUND & AIMS: Fatty liver disease (FLD) is a growing epidemic that is expected to be the leading cause of end-stage liver disease within the next decade. Both environmental and genetic factors contribute to the susceptibility of FLD. Several genetic variants contributing to FLD have been identified in exome-wide association studies. However, there is still a missing hereditability indicating that other genetic variants are yet to be discovered. METHODS: To find genes involved in FLD, we first examined the association of missense and nonsense variants with alanine amino transferase at an exome-wide level in 425,671 participants from the UK Biobank. We then validated genetic variants wit…

0301 basic medicineGenome-wide association studyLiver disease0302 clinical medicineENRICHMENT ANALYSISNon-alcoholic Fatty Liver DiseaseRisk FactorsNonalcoholic fatty liver diseaseExomeCONFERS SUSCEPTIBILITYGeneticsINSULIN-RESISTANCEmedicine.diagnostic_testFatty liverGastroenterologyAlanine Transaminase1-Acylglycerol-3-Phosphate O-Acyltransferase3. Good healthGENOMEEuropePhenotypeLiver biopsy030211 gastroenterology & hepatologyNonalcoholic Fatty Liver DiseaseMAFLDSingle-nucleotide polymorphismBiologyTransaminaseRisk Assessment03 medical and health sciencesApolipoproteins ENAFLDmedicineGenetic predispositionHumansGenetic Predisposition to DiseaseHEPATIC STEATOSISGenetic associationMAFLD Phenotype Reproducibility of Results Risk Assessment Risk Factors Transcriptome Genetic Variation Metabolic Associated Fatty Liver Disease Nonalcoholic Fatty Liver Disease Transaminase 1-Acylglycerol-3-Phosphate O-Acyltransferase Alanine Transaminase Apolipoproteins E Biomarkers Europe Exome Gene Expression Profiling Genetic Predisposition to Disease Genome-Wide Association Study Humans Non-alcoholic Fatty Liver DiseaseHepatologyMUTATIONSGene Expression ProfilingGenetic VariationReproducibility of Resultsmedicine.diseaseX-RECEPTORGENE030104 developmental biology3121 General medicine internal medicine and other clinical medicineMetabolic Associated Fatty Liver DiseaseRNA-SEQ DATATranscriptomePATHOGENICITYBiomarkersGenome-Wide Association StudyGastroenterology
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Duodenal Bacteria From Patients With Celiac Disease and Healthy Subjects Distinctly Affect Gluten Breakdown and Immunogenicity

2016

Background & Aims Partially degraded gluten peptides from cereals trigger celiac disease (CD), an autoimmune enteropathy occurring in genetically susceptible persons. Susceptibility genes are necessary but not sufficient to induce CD, and additional environmental factors related to unfavorable alterations in the microbiota have been proposed. We investigated gluten metabolism by opportunistic pathogens and commensal duodenal bacteria and characterized the capacity of the produced peptides to activate gluten-specific T-cells from CD patients. Methods We colonized germ-free C57BL/6 mice with bacteria isolated from the small intestine of CD patients or healthy controls, selected for their in v…

0301 basic medicineGlutensDuodenumTissue transglutaminaseT-Lymphocytesdigestive systemMicrobiologyMice03 medical and health sciencesLactobacillusmedicineAnimalsHumansImmunogenetic Phenomenachemistry.chemical_classificationHepatologybiologyImmunogenicityGastroenterologynutritional and metabolic diseasesmedicine.diseasebiology.organism_classificationGlutendigestive system diseasesSmall intestineAltered Schaedler floraMice Inbred C57BLCeliac DiseaseLactobacillus030104 developmental biologymedicine.anatomical_structurechemistryBacterial TranslocationCase-Control StudiesPseudomonas aeruginosaImmunologybiology.proteinGliadinDysbiosisGastroenterology
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APOBEC3-mediated restriction of RNA virus replication

2018

AbstractAPOBEC3 family members are cytidine deaminases with roles in intrinsic responses to infection by retroviruses and retrotransposons, and in the control of other DNA viruses, such as herpesviruses, parvoviruses and hepatitis B virus. Although effects of APOBEC3 members on viral DNA have been demonstrated, it is not known whether they edit RNA genomes through cytidine deamination. Here, we investigated APOBEC3-mediated restriction of Coronaviridae. In experiments in vitro, three human APOBEC3 proteins (A3C, A3F and A3H) inhibited HCoV-NL63 infection and limited production of progeny virus, but did not cause hypermutation of the coronaviral genome. APOBEC3-mediated restriction was parti…

0301 basic medicineHepatitis B virusviruseslcsh:MedicineGenome Viralmedicine.disease_causeVirus ReplicationVirusArticleCell LineCytosine Deaminase03 medical and health scienceschemistry.chemical_compoundCytidine deaminationCytidine DeaminasemedicineCoronaviridaeHumansRNA VirusesAPOBEC Deaminaseslcsh:ScienceCoronavirusMultidisciplinarybiology630 Agriculturelcsh:RDNA VirusesRNARNA virusbiochemical phenomena metabolism and nutritionbiology.organism_classificationVirology3. Good health030104 developmental biologyNucleoproteinschemistryViral replicationRNA570 Life sciences; biologylcsh:QDNA
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Analysis of substrate binding in individual active sites of bifunctional human ATIC

2018

Aminoimidazolecarboxamide ribonucleotide formyl transferase (AICARFT): Inosine monophosphate cyclohydrolase (IMPCH, collectively called ATIC) is a bifunctional enzyme that catalyses the penultimate and final steps in the purine de novo biosynthesis pathway. The bifunctional protein is dimeric and each monomer contains two different active sites both of which are capable of binding nucleotide substrates, this means to a potential total of four distinct binding events might be observed. Within this work we used a combination of site-directed and truncation mutants of ATIC to independently investigate the binding at these two sites using calorimetry. A single S10W mutation is sufficient to blo…

0301 basic medicineHydroxymethyl and Formyl TransferasesModels MolecularRibonucleotideStereochemistryBiophysicsBiochemistryAnalytical ChemistrySubstrate Specificity03 medical and health scienceschemistry.chemical_compoundMultienzyme ComplexesCatalytic DomainTransferaseHumansNucleotidePhosphofructokinase 2Bifunctional enzymesMolecular Biologychemistry.chemical_classification030102 biochemistry & molecular biologybiologyNucleotidesActive siteCooperative bindingIsothermal titration calorimetryXanthosine monophosphate030104 developmental biologyBiochemistrychemistryNucleotide DeaminasesMultiple binding sitesbiology.proteinIsothermal titration calorimetryProtein Binding
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