Search results for "insulin signaling"

showing 3 items of 3 documents

The Insulin Receptor Substrate 1 (Irs1) in Intestinal Epithelial Differentiation and in Colorectal Cancer

2012

Colorectal cancer (CRC) is associated with lifestyle factors that affect insulin/IGF signaling, of which the insulin receptor substrate 1 (IRS1) is a key transducer. We investigated expression, localization and pathologic correlations of IRS1 in cancer-uninvolved colonic epithelium, primary CRCs with paired liver metastases and in vitro polarizing Caco2 and HT29 cells. IRS1 mRNA and protein resulted higher, relative to paired mucosa, in adenomas of familial adenomatous polyposis patients and in CRCs that overexpressed c-MYC, ß-catenin, InsRß, and IGF1R. Analysis of IRS1 immunostaining in 24 cases of primary CRC with paired colonic epithelium and hepatic metastasis showed that staining inten…

MalePathologyAnatomy and PhysiologySettore MED/06 - Oncologia MedicaMetastasisIntestinal mucosaInsulin Signaling CascadeMolecular Cell BiologyGastrointestinal CancersBasic Cancer ResearchInsulinIntestinal MucosaInsulin-like Growth FactorCOLON-CARCINOMA-CELLS; GROWTH-FACTOR RECEPTOR; BETA-CATENIN; FACTOR-I; IGF-I; NUCLEAR TRANSLOCATION; ADENOMATOUS POLYPOSIS; STEM-CELL; EXPRESSION; MUTATIONSMultidisciplinarybiologyChemistryQLiver NeoplasmsRCell PolarityCell DifferentiationSignaling CascadesGene Expression Regulation NeoplasticProtein Transportmedicine.anatomical_structureOncologyMedicineFemaleColorectal NeoplasmsHT29 CellsResearch ArticleSignal TransductionAdultendocrine systemmedicine.medical_specialtyColonScienceIRS1 IGF1R colorectal cancerEndocrine SystemGastroenterology and HepatologySignaling PathwaysFamilial adenomatous polyposisHT29 CellsmedicineHumansBiologyAgedInsulin-like growth factor 1 receptorEndocrine Physiologymedicine.diseasedigestive system diseasesEpitheliumIRS1Insulin receptorInsulin Receptor Substrate Proteinsbiology.proteinCancer researchCaco-2 CellsImmunostainingInsulin-Dependent Signal Transduction
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Glucagon-like peptide-2 analog and inflammatory state in obese mice

2020

Obesity is characterized by chronic low grade of systemic inflammation that develops in response to nutrient excess and plays a key role in the pathogenesis of insulin resistance. It is characterized by macrophage infiltration into adipose tissue (AT) and abnormal cytokine production. These factors damage the metabolic homeostasis leading to alteration in the insulin signaling in specific tissues and organs such as AT and liver. Thus, obese subjects develop over the time resistance to the cellular actions of insulin. Glucagon like peptide-2 (GLP-2) is an intestinal proglucagon-derived hormone released together with GLP1, in response to the passage of food by the distal small intestine. Once…

medicine.medical_specialtybusiness.industryEndocrinology Diabetes and MetabolismGlucagon-like Peptide-2 AnalogMice Obesemedicine.diseaseSettore BIO/09 - FisiologiaGlucagon-Like Peptide-1 ReceptorPeptide FragmentsMiceEndocrinologyEndocrinologyGlucagon-Like Peptide 1Diabetes mellitusInternal medicineGlucagon like peptide-2 (GLP-2) obese high fat diet (HFD) mice inflammation insulin signaling.Glucagon-Like Peptide 2medicineAnimalsInsulinbusinessObese MiceEndocrine
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Increased dosage of Ink4/Arf protects against glucose intolerance and insulin resistance associated with aging

2013

Recent genome-wide association studies have linked type-2 diabetes mellitus to a genomic region in chromosome 9p21 near the Ink4/Arf locus, which encodes tumor suppressors that are up-regulated in a variety of mammalian organs during aging. However, it is unclear whether the susceptibility to type-2 diabetes is associated with altered expression of the Ink4/Arf locus. In the present study, we investigated the role of Ink4/Arf in age-dependent alterations of insulin and glucose homeostasis using Super-Ink4/Arf mice which bear an extra copy of the entire Ink4/Arf locus. We find that, in contrast to age-matched wild-type controls, Super-Ink4/Arf mice do not develop glucose intolerance with agi…

p16ink4amedicine.medical_specialtyAgingGlucose uptakemedicine.medical_treatmentMice TransgenicCarbohydrate metabolismCDKN2BMiceCDKN2AInsulin resistanceInsulin receptor substrateInternal medicineDiabetes mellitusinsulin resistanceGlucose IntolerancemedicineGlucose homeostasisAnimalsInsulininsulin signalingCyclin-Dependent Kinase Inhibitor p16biologydiabetesADP-Ribosylation FactorsInsulin18F-fluorodeoxyglucose-PETARFCell Biologypancreatic isletmedicine.diseaseMice Inbred C57BLInsulin receptorEndocrinologyGlucosebiology.proteinInsulin Resistancep15ink4bGenome-Wide Association Study
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