0000000000186350

AUTHOR

Martin Hausmann

showing 3 related works from this author

Succinate receptor mediates intestinal inflammation and fibrosis.

2018

Succinate, an intermediate of the tricarboxylic acid cycle, is accumulated in inflamed areas and its signaling through succinate receptor (SUCNR1) regulates immune function. We analyze SUCNR1 expression in the intestine of Crohn's disease patients and its role in murine intestinal inflammation and fibrosis. We show that both serum and intestinal succinate levels and SUCNR1 expression in intestinal surgical resections were higher in CD patients than in controls. SUCNR1 co-localized with CD86, CD206, and alpha-SMA(+) cells in human intestine and we found a positive and significant correlation between SUCNR1 and alpha-SMA expression. In human isolated fibroblasts from CD patients SUCNR1 expres…

0301 basic medicineAdultMaleAdolescentImmunologyMacrophage polarizationSuccinic Acid610 Medicine & healthProinflammatory cytokineReceptors G-Protein-Coupled03 medical and health sciencesMiceYoung Adult0302 clinical medicineImmune systemCrohn DiseaseFibrosismedicineImmunology and AllergyAnimalsHumansIntestinal MucosaFibroblastReceptorCells CulturedCD86InflammationMice Knockout2403 Immunologybusiness.industryMacrophagesmedicine.diseaseColitisFibrosisCitric acid cycleMice Inbred C57BLDisease Models Animal10219 Clinic for Gastroenterology and Hepatology030104 developmental biologymedicine.anatomical_structure2723 Immunology and AllergyCancer researchFemalebusiness030215 immunologyMucosal immunology
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Decreased Fibrogenesis After Treatment with Pirfenidone in a Newly Developed Mouse Model of Intestinal Fibrosis

2016

BACKGROUND Fibrosis as a common problem in patients with Crohn's disease is a result of an imbalance toward excessive tissue repair. At present, there is no specific treatment option. Pirfenidone is approved for the treatment of idiopathic pulmonary fibrosis with both antifibrotic and anti-inflammatory effects. We subsequently investigated the impact of pirfenidone treatment on development of fibrosis in a new mouse model of intestinal fibrosis. METHODS Small bowel resections from donor mice were transplanted subcutaneously into the neck of recipients. Animals received either pirfenidone (100 mg/kg, three times daily, orally) or vehicle. RESULTS After administration of pirfenidone, a signif…

0301 basic medicinemedicine.medical_specialtyPyridonesBlotting Western610 Medicine & healthGastroenterologyImmunoenzyme TechniquesMice03 medical and health sciencesIdiopathic pulmonary fibrosis0302 clinical medicineTransforming Growth Factor betaFibrosis10049 Institute of Pathology and Molecular PathologyInternal medicinemedicineAnimalsImmunology and Allergy2715 GastroenterologyCell ProliferationMice Inbred BALB CbiologyCell growthbusiness.industryAnti-Inflammatory Agents Non-SteroidalGastroenterologyPirfenidoneTransforming growth factor betamedicine.diseaseFibrosisMice Inbred C57BLTransplantationBlotDisease Models AnimalIntestinal Diseases10219 Clinic for Gastroenterology and Hepatology030104 developmental biology2723 Immunology and Allergybiology.proteinFemale030211 gastroenterology & hepatologyCollagen10069 Clinic of Cranio-Maxillofacial SurgerybusinessAfter treatmentmedicine.drugInflammatory Bowel Diseases
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Anti-inflammatory Function of High-Density Lipoproteins via Autophagy of IκB Kinase

2015

Background & Aims: Plasma levels of high-density lipoprotein (HDL) cholesterol are frequently found decreased in patients with inflammatory bowel disease (IBD). Therefore, and because HDL exerts anti-inflammatory activities, we investigated whether HDL and its major protein component apolipoprotein A-I (apoA-I) modulate mucosal inflammatory responses in vitro and in vivo. Methods: The human intestinal epithelial cell line T84 was used as the in vitro model for measuring the effects of HDL on the expression and secretion of tumor necrosis factor (TNF), interleukin-8 (IL-8), and intracellular adhesion molecule (ICAM). Nuclear factor-κB (NF-κB)-responsive promoter activity was studied by …

WT wild typeApolipoprotein BEMSA electrophoretic mobility shift assayMPO myeloperoxidaseIκB kinaseDSS dextran sodium sulphatemTOR the mammalian target of rapamycinRT-PCR real-time polymerase chain reactionNF-κBchemistry.chemical_compound540 ChemistryApoA-I apolipoprotein A-I10038 Institute of Clinical ChemistryOriginal ResearchTNF tumor necrosis factorbiologyIBD inflammatory bowel diseaseChemistryGastroenterologyMyeloperoxidase10076 Center for Integrative Human PhysiologyMEICS murine endoscopic index of colitis severityTumor necrosis factor alphalipids (amino acids peptides and proteins)3-MA 3-methyl adenineNF-κB nuclear factor κBHDL high-density lipoproteinLC3II light chain 3 IIPBS phosphate-buffered salinep-IKK phosphorylated IκB kinase610 Medicine & healthICAM intracellular adhesion molecule246-Trinitrobenzenesulfonic acidTg transgenicmedicineAutophagyCD Crohn’s disease2715 GastroenterologyColitislcsh:RC799-869KO knockoutHepatologyApolipoprotein A-IAutophagyInflammatory Bowel DiseaseTNBS 246-trinitrobenzenesulfonic acidmedicine.diseaseMolecular biologyIL interleukinsiRNA small interfering RNAPI-3 phosphatidylinositol-3Immunologybiology.protein2721 Hepatologylcsh:Diseases of the digestive system. GastroenterologyPFA paraformaldehydeLipoproteinDAPI 4′6-diamidino-2-phenylindoleCMGH Cellular and Molecular Gastroenterology and Hepatology
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