Search results for "NASH."

showing 10 items of 141 documents

Impaired Kupffer Cell Self-Renewal Alters the Liver Response to Lipid Overload during Non-alcoholic Steatohepatitis

2020

International audience; Kupffer cells (KCs) are liver-resident macrophages that self-renew by proliferation in the adult independently from monocytes. However, how they are maintained during non-alcoholic steatohepatitis (NASH) remains ill defined. We found that a fraction of KCs derived from Ly-6C+ monocytes during NASH, underlying impaired KC self-renewal. Monocyte-derived KCs (MoKCs) gradually seeded the KC pool as disease progressed in a response to embryo-derived KC (EmKC) death. Those MoKCs were partly immature and exhibited a pro-inflammatory status compared to EmKCs. Yet, they engrafted the KC pool for the long term as they remained following disease regression while acquiring matur…

0301 basic medicine[SDV]Life Sciences [q-bio]OntogenyMESH: Cell Self RenewalSelf renewalMESH: MonocytesMESH: Mice KnockoutMice0302 clinical medicineNon-alcoholic Fatty Liver DiseaseImmunology and AllergyKupffer cellsMESH: AnimalsCell Self RenewalMESH: Lipid MetabolismMice KnockoutKupffer cellLipidsResearch Highlightmacrophages[SDV] Life Sciences [q-bio]Infectious Diseasesmedicine.anatomical_structureLiver030220 oncology & carcinogenesismonocytesmedicine.medical_specialtynon-alcoholic steatohepatitis (NASH)ImmunologyBiology03 medical and health sciencesMESH: Mice Inbred C57BLMESH: Cell ProliferationInternal medicinemedicineAnimalsLiver damageMESH: MiceCell ProliferationMESH: Non-alcoholic Fatty Liver DiseaseTriglyceride storageNon alcoholicLipid Metabolismmedicine.diseaseMESH: Lipidseye diseasesMice Inbred C57BLMESH: Kupffer Cells030104 developmental biologyEndocrinologySteatohepatitisHomeostasisMESH: LiverImmunity
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NUPR1 protects liver from lipotoxic injury by improving the endoplasmic reticulum stress response

2021

AbstractBackground and AimsNon-alcoholic fatty liver disease and related hepatic syndromes affect up to one third of the adult population. The molecular mechanisms underlying NAFL etiology remain elusive. Nuclear Protein 1 (NUPR1) expression increases upon cell injury in all organs and recently we report its active participation in the activation of the Unfolded Protein Response (UPR). The UPR typically maintains protein homeostasis, but downstream mediators of the pathway regulate metabolic functions, including lipid metabolism. NUPR1 and UPR increase have been reported in obesity and liver pathologies and the goal of this study was to investigate the roles of NUPR1 in this context.Methods…

0301 basic medicinemedicine.medical_specialtySettore MED/09 - Medicina InternaPPAR-a signalling UPRPeroxisome proliferator-activated receptorContext (language use)UPRDiet High-FatBiochemistry03 medical and health sciencesLiver diseaseMice0302 clinical medicineInternal medicineCell Line TumorGeneticsmedicineBasic Helix-Loop-Helix Transcription FactorsAnimalsHomeostasisHumansMolecular Biologychemistry.chemical_classificationbusiness.industryEndoplasmic reticulumFatty liverNASHLipid metabolismlipotoxicitymedicine.diseaseEndoplasmic Reticulum StressLipid MetabolismNeoplasm Proteins030104 developmental biologyEndocrinologychemistryLipotoxicityLiverNAFLKnockout mouseUnfolded protein responseUnfolded Protein ResponsePPAR-a signallingSteatosisSteatohepatitisbusiness030217 neurology & neurosurgeryNUPR1Biotechnology
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Protein phosphatase 1 regulatory subunit 3B gene variation protects against hepatic fat accumulation and fibrosis in individuals at high risk of nona…

2018

Nonalcoholic fatty liver disease (NAFLD) is a major cause of liver damage and has a strong genetic component. The rs4841132 G>A variant, modulating the expression of protein phosphatase 1 regulatory subunit 3B (PPP1R3B), which is involved in glycogen synthesis, has been reported to reduce the risk of NAFLD but at the same time may favor liver disease by facilitating glycogen accumulation. The aim of this study was to assess the impact of rs4841132 on development of histologic steatosis and fibrosis in 1,388 European individuals in a liver biopsy cohort, on NAFLD hepatocellular carcinoma in a cross-sectional Italian cohort (n = 132 cases), and on liver disease at the population level in the …

0301 basic medicinemedicine.medical_specialtySettore MED/12 - GASTROENTEROLOGIAPopulation03 medical and health sciencesLiver disease0302 clinical medicineLipid oxidationFibrosisInternal medicineNonalcoholic fatty liver diseasemedicineeducationNASH NAFLDeducation.field_of_studyHepatologymedicine.diagnostic_testbusiness.industryOriginal ArticlesHepatologymedicine.diseasen/a030104 developmental biologyEndocrinologyLiver biopsy030211 gastroenterology & hepatologyOriginal ArticleSteatosisbusiness
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EASL Clinical Practice Guidelines on non-invasive tests for evaluation of liver disease severity and prognosis – 2021 update

2021

Summary Non-invasive tests are increasingly being used to improve the diagnosis and prognostication of chronic liver diseases across aetiologies. Herein, we provide the latest update to the EASL Clinical Practice Guidelines on the use of non-invasive tests for the evaluation of liver disease severity and prognosis, focusing on the topics for which relevant evidence has been published in the last 5 years.

0301 basic medicinemedicine.medical_specialtyelastographyCirrhosisHepatologydecompensationbusiness.industrycirrhosisNon invasiveMEDLINENASHmedicine.diseaseClinical Practice03 medical and health sciencesLiver disease030104 developmental biology0302 clinical medicinemedicine030211 gastroenterology & hepatologyDecompensationIntensive care medicinebusinessserum markers of fibrosiscirrhosis decompensation elastography NASH serum markers of fibrosis
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Non-convex power allocation games in MIMO cognitive radio networks

2013

Consideramos un escenario de reparto del espectro, basado en la detección, en una red de radio cognitiva MIMO donde el objetivo general es maximizar el rendimiento total de cada usuario de radio cognitiva optimizando conjuntamente la operación de detección y la asignación de potencia en todos los canales, bajo una restricción de interferencia para los usuarios primarios. Los problemas de optimización resultantes conducen a un juego no convexo, que presenta un nuevo desafío a la hora de analizar los equilibrios de este juego. Con el fin de hacer frente a la no convexidad del juego, utilizamos un nuevo concepto relajado de equilibrio, el equilibrio cuasi-Nash (QNE). Se demuestran las condicio…

3G MIMOnon-cooperative gamesComputer Science::Computer Science and Game TheoryMathematical optimization:CIENCIAS TECNOLÓGICAS [UNESCO]021103 operations researchOptimization problemComputer scienceMIMO0211 other engineering and technologies020206 networking & telecommunicationsThroughput02 engineering and technologyUNESCO::CIENCIAS TECNOLÓGICASCognitive radio0202 electrical engineering electronic engineering information engineeringquasi-Nash equilibriumResource allocationGame theoryInterior point methodcognitive radio network
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Metabolic signatures across the full spectrum of non-alcoholic fatty liver disease.

2022

Funder: European Commission

ALTtype 2 diabetes mellitusROC receiving operator characteristicaspartate aminotransferaseHSDLDL low-density lipoproteinUHPLC ultrahigh-performance liquid chromatographyROCHCCNon-alcoholic steatohepatitisGCPCANASHGastroenterology2-HB 2-hydroxybutanoic acid; 3-HB 3-hydroxybutanoic acid; ALT alanine aminotransferase; AST aspartate aminotransferase; CE cholesterol ester; Cer ceramide; FFA free fatty acid; FLIP Fatty Liver Inhibition of Progression; Fibrosis; GC gas chromatography; HCC hepatocellular carcinoma; HSD honest significant difference; LC lipid cluster; LDL low-density lipoprotein; LM lipid and metabolite; LMC lipid metabolite and clinical variable; LPC lysophosphatidylcholine; Lipidomics; Mass spectrometry; Metabolomics; NAFL non-alcoholic fatty liver; NAFLD non-alcoholic fatty liver disease; NAS NASH activity score; NASH non-alcoholic steatohepatitis; NIDDK NASH-CRN National Institute of Digestive Diseases and Kidney NASH Clinical Research Network; NRR non-rejection rate; Non-alcoholic steatohepatitis; PC(O) ether PC; PC phosphatidylcholine; PCA principal component analysis; PE phosphatidylethanolamine; QTOFMS quadrupole-time-of-flight mass spectrometry; ROC receiving operator characteristic; SAF steatosis activity and fibrosis; SM sphingomyelin; T2DM type 2 diabetes mellitus; TG triacylglycerol; UHPLC ultrahigh-performance liquid chromatographySAFSAF steatosis activity and fibrosisLM lipid and metabolitehonest significant differenceHSD honest significant differenceTG triacylglycerolnon-rejection ratecholesterol esterPCPEGC gas chromatographyfree fatty acidFLIPNASH non-alcoholic steatohepatitisNIDDK NASH-CRN National Institute of Digestive Diseases and Kidney NASH Clinical Research NetworkBIOMARKERST2DMPE phosphatidylethanolamineLDLlipidNAFLDFFA free fatty acid2-HBMetabolomicsNAFL non-alcoholic fatty liverLMCphosphatidylcholineScience & TechnologySM sphingomyelinGastroenterology & HepatologyMass spectrometryactivitynutritional and metabolic diseasesT2DM type 2 diabetes mellitusACIDSreceiving operator characteristicdigestive system diseasesquadrupole-time-of-flight mass spectrometryLC lipid clusterlow-density lipoproteinNAS2-HB 2-hydroxybutanoic acidNAS NASH activity scoreQTOFMSether PCNRRSCORING SYSTEMprincipal component analysisgas chromatographyLC2-hydroxybutanoic acidPROGRESSIONAST aspartate aminotransferaseLMPC phosphatidylcholinePC(O)MARKERSUHPLCsteatosisTOOLImmunology and AllergyINSULIN-RESISTANCECerSMFatty Liver Inhibition of Progressionhepatocellular carcinoma2-HB 2-hydroxybutanoic acid NIDDK NASH-CRN National Institute of Digestive Diseases and Kidney NASH Clinical Research Network NRR non-rejection rate Non-alcoholic steatohepatitis PC(O) ether PC PC phosphatidylcholine PCA principal component analysis PE phosphatidylethanolamine QTOFMS quadrupole-time-of-flight mass spectrometry ROC receiving operator characteristic SAF steatosis activity and fibrosis SM T2DM type 2 diabetes mellitus TG triacylglycerol UHPLC ultrahigh-performance liquid chromatographyultrahigh-performance liquid chromatographyCELPC3-HBNAFLnon-alcoholic fatty liverTGtriacylglycerolNRR non-rejection rateLife Sciences & BiomedicineNAFLD non-alcoholic fatty liver diseaseFLIP Fatty Liver Inhibition of Progressionalanine aminotransferasemetaboliteCer ceramideCE cholesterol estersphingomyelinlysophosphatidylcholineand fibrosisALT alanine aminotransferaseInternal MedicineceramideNational Institute of Digestive Diseases and Kidney NASH Clinical Research NetworkAST3-HB 3-hydroxybutanoic acidQTOFMS quadrupole-time-of-flight mass spectrometryPCA principal component analysisLPC lysophosphatidylcholineHepatologynon-alcoholic fatty liver diseaseand clinical variablePC(O) ether PC3-hydroxybutanoic acidFibrosisNASH activity scoreNIDDK NASH-CRNlipid clusterlipid and metabolitephosphatidylethanolamineLipidomicsLMC lipid metabolite and clinical variableFFAHCC hepatocellular carcinomaJHEP reports : innovation in hepatology
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AMPK regulates macrophage polarization in adipose tissue inflammation and NASH

2013

Molecular and Translational Medicine, Dept. of Medicine I, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrase 1,55116 Mainz, GermanyCOMMENTARY ON:Hematopoietic AMPK beta1 reduces mouse adipose tissue mac-rophage inflammation and insulin resistance in obesity. Galic S,Fullerton MD, Schertzer JD, Sikkema S, Marcinko K, Walkley CR,Izon D, Honeyman J, Chen ZP, van Denderen BJ, Kemp BE, Stein-berg GR. J Clin Invest 2011;121(12):4903–15. Copyright 2011.Reprinted with permission of American Society for ClinicalInvestigation.http://www.ncbi.nlm.nih.gov/pubmed/22080866Abstract: Individuals who are obese are frequently insulin resistant,putting them at increased risk of d…

AMPKmedicine.medical_specialtyMacrophageMacrophage polarizationAdipose tissueAdipose tissueM1M2Insulin resistanceInternal medicineNAFLDmedicineBeta oxidationchemistry.chemical_classificationHepatologybiologyGlucose transporterNASHFatty acidAMPKInsulin resistanceType 2 diabetesmedicine.diseaseFatty acidFibrosisEndocrinologychemistryLiverbiology.proteinGLUT4Research ArticleJournal of Hepatology
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Utility and appropriateness of the fatty liver inhibition of progression (FLIP) algorithm and steatosis, activity, and fibrosis (SAF) score in the ev…

2013

Biopsy is still the gold standard for the diagnosis of nonalcoholic steatohepatitis but the definition may vary among pathologists, a drawback especially in evaluation of biopsies for clinical trials. We previously developed a scoring system (steatosis, activity, fibrosis [SAF]) allowing the use of an algorithm (fatty liver inhibition of progression [FLIP]) for the classification of liver injury in morbid obesity. The aim of this study was to determine whether the use of the SAF score and FLIP algorithm can decrease interobserver variations among pathologists. In a first session, pathologists categorized 40 liver biopsies of patients with nonalcoholic fatty liver disease (NAFLD) according t…

AdultLiver CirrhosisMalemedicine.medical_specialtyConcordanceBiopsySettore MED/08 - Anatomia PatologicaSeverity of Illness IndexFibrosisNon-alcoholic Fatty Liver DiseaseInternal medicineSAF steatosis activity fibrosis.Nonalcoholic fatty liver diseaseBiopsyNAS nonalcoholic steatohepatitis activity scoremedicineHumansAgedObserver VariationHepatologymedicine.diagnostic_testbusiness.industryFatty liverGold standard (test)HepatologyMiddle Agedmedicine.diseaseFatty LiverLiverNASH nonalcoholic steatohepatitiDisease ProgressionFemaleNAFLD nonalcoholic fatty liver diseaseSteatosisbusinessAlgorithmAlgorithmsHepatology (Baltimore, Md.)
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Development and Validation of Hepamet Fibrosis Scoring System-A Simple, Noninvasive Test to Identify Patients With Nonalcoholic Fatty Liver Disease W…

2020

HEPAmet Registry.

AdultLiver CirrhosisMalemedicine.medical_specialtySteatosis[SDV]Life Sciences [q-bio]BiopsyLikelihood ratios in diagnostic testingGastroenterologySeverity of Illness IndexDecision Support Techniques03 medical and health sciences0302 clinical medicineFibrosisNon-alcoholic Fatty Liver DiseasePositive predicative valueInternal medicineNonalcoholic fatty liver diseaseHOMAMedicineHumansComputingMilieux_MISCELLANEOUSAged2. Zero hungerNASH FIBROSISHepatologymedicine.diagnostic_testReceiver operating characteristicbusiness.industryPrognostic FactorGastroenterologyOdds ratioMiddle Agedmedicine.diseasePrognosis3. Good healthCross-Sectional StudiesDiagnostic ToolCirrhosisLiver030220 oncology & carcinogenesisLiver biopsyDiagnostic odds ratio030211 gastroenterology & hepatologyFemalebusinessClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association
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Statin use and non-alcoholic steatohepatitis in at risk individuals.

2015

Background & Aims Excess hepatic free cholesterol contributes to the pathogenesis of non-alcoholic steatohepatitis, and statins reduce cholesterol synthesis. Aim of this study was to assess whether statin use is associated with histological liver damage related to steatohepatitis. Methods The relationship between statin use, genetic risk factors, and liver damage was assessed in a multi-center cohort of 1201 European individuals, who underwent liver biopsy for suspected non-alcoholic steatohepatitis. Results Statin use was recorded in 107 subjects, and was associated with protection from steatosis, NASH, and fibrosis stage F2-F4, in a dose-dependent manner (adjusted p <0.05 for all).…

AdultMaleRiskmedicine.medical_specialtyStatinmedicine.drug_classBiopsyGastroenterologyNon-alcoholic Fatty Liver DiseaseInternal medicinemedicineHumansSteatosiPNPLA3AgedHepatologymedicine.diagnostic_testbusiness.industryNASHStatinMembrane ProteinsLipaseHepatologyMiddle AgedImpaired fasting glucosemedicine.diseaseCholesterolEndocrinologyLogistic ModelsLiverLiver biopsyCohortFemaleSteatosisSteatohepatitisHydroxymethylglutaryl-CoA Reductase InhibitorsbusinessNon-alcoholic steatohepatitiTM6SF2Journal of hepatology
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