0000000000860905

AUTHOR

Fawaz G. Haj

showing 2 related works from this author

Pancreatic Protein Tyrosine Phosphatase 1B Deficiency Exacerbates Acute Pancreatitis in Mice

2016

Acute pancreatitis (AP) is a common and devastating gastrointestinal disorder that causes significant morbidity. The disease starts as local inflammation in the pancreas that may progress to systemic inflammation and complications. Protein tyrosine phosphatase 1B (PTP1B) is implicated in inflammatory signaling, but its significance in AP remains unclear. To investigate whether PTP1B may have a role in AP, we used pancreas PTP1B knockout (panc-PTP1B KO) mice and determined the effects of pancreatic PTP1B deficiency on cerulein- and arginine-induced acute pancreatitis. We report that PTP1B protein expression was increased in the early phase of AP in mice and rats. In addition, histological an…

Male0301 basic medicineWistarSystemic inflammationMedical and Health SciencesOral and gastrointestinalMicePathology2.1 Biological and endogenous factorsAetiologyNon-Receptor Type 1CancerMice KnockoutProtein Tyrosine Phosphatase Non-Receptor Type 1Pancreatitis Acute NecrotizingReverse Transcriptase Polymerase Chain ReactionRegular Articlemedicine.anatomical_structureAcute NecrotizingGastrointestinal disorderAcute pancreatitisTumor necrosis factor alphamedicine.symptomPancreashormones hormone substitutes and hormone antagonistsmedicine.medical_specialtyKnockoutInflammationPathology and Forensic MedicineProinflammatory cytokinePancreatic Cancer03 medical and health sciencesRare DiseasesInternal medicinemedicineAnimalsRats WistarAnimalbusiness.industrymedicine.diseaseRatsDisease Models Animal030104 developmental biologyEndocrinologyPancreatitisDisease ModelsPancreatitisProtein Tyrosine PhosphataseDigestive DiseasesbusinessThe American Journal of Pathology
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Pancreatic T cell protein-tyrosine phosphatase deficiency ameliorates cerulein-induced acute pancreatitis.

2014

Background Acute pancreatitis (AP) is a common clinical problem whose incidence has been progressively increasing in recent years. Onset of the disease is trigged by intra-acinar cell activation of digestive enzyme zymogens that induce autodigestion, release of pro-inflammatory cytokines and acinar cell injury. T-cell protein tyrosine phosphatase (TCPTP) is implicated in inflammatory signaling but its significance in AP remains unclear. Results In this study we assessed the role of pancreatic TCPTP in cerulein-induced AP. TCPTP expression was increased at the protein and messenger RNA levels in the early phase of AP in mice and rats. To directly determine whether TCPTP may have a causal rol…

MessengerWistarProtein tyrosine phosphataseInbred C57BLBiochemistryOral and gastrointestinalSTAT3Mice2.1 Biological and endogenous factorsPhosphorylationAetiologySTAT3Non-Receptor Type 2CeruletideCancerMice KnockoutProtein Tyrosine Phosphatase Non-Receptor Type 2Pancreatitis Acute NecrotizingNF-kappa B3. Good healthAcute NecrotizingAmylasesTumor necrosis factor alphaTCPTPCell activationCeruletideSTAT3 Transcription Factormedicine.medical_specialtyBiochemistry & Molecular BiologyKnockoutBiologyProinflammatory cytokinePancreatic CancerRare DiseasesInternal medicineAcinar cellmedicineGeneticsAnimalsRNA MessengerRats WistarMolecular BiologyInflammationTumor Necrosis Factor-alphaInterleukin-6ResearchCell BiologyLipaseNFKB1RatsAcute pancreatitisMice Inbred C57BLEndocrinologyPancreatitisbiology.proteinRNAProtein Tyrosine PhosphataseBiochemistry and Cell BiologyDigestive DiseasesKnockout mice
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