Search results for "Response"

showing 10 items of 4136 documents

Relaxant effects of flavonoids on the mouse isolated stomach: structure-activity relationships.

2008

Flavonoids are a large heterogeneous group of benzo-gamma-pyrone derivatives, which are abundantly present in our diet. In this study we investigated the effects of six flavonoids (apigenin, genistein, quercetin, rutin, naringenin and catechin) on the gastric tone in mouse isolated stomach. The mechanical activity was recorded as changes of intraluminal pressure. All flavonoids tested produced a concentration-dependent relaxation, which was reversible after washout. The relative order of potency of the flavonoids was apigenin> or =genistein>quercetin>naringenin> or =rutin>catechin. Analysis of the chemical structure showed that the relaxant activity was progressively diminished by the prese…

NaringeninMalePotassium ChannelsFlavonoidGenisteinAction PotentialsIn Vitro TechniquesNitric OxideSettore BIO/09 - FisiologiaNitric oxidechemistry.chemical_compoundRutinMiceStructure-Activity RelationshipFlavonoids gastric relaxation smooth muscle potassium channels nitric oxideAnimalsheterocyclic compoundsPharmacologychemistry.chemical_classificationFlavonoidsNeuronsDose-Response Relationship DrugStomachfood and beveragesCatechinMuscle SmoothMice Inbred C57BLchemistryBiochemistryGastric MucosaApigeninProstaglandinsQuercetinMuscle ContractionEuropean journal of pharmacology
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Redox signaling in acute pancreatitis

2015

Acute pancreatitis is an inflammatory process of the pancreatic gland that eventually may lead to a severe systemic inflammatory response. A key event in pancreatic damage is the intracellular activation of NF-κB and zymogens, involving also calcium, cathepsins, pH disorders, autophagy, and cell death, particularly necrosis. This review focuses on the new role of redox signaling in acute pancreatitis. Oxidative stress and redox status are involved in the onset of acute pancreatitis and also in the development of the systemic inflammatory response, being glutathione depletion, xanthine oxidase activation, and thiol oxidation in proteins critical features of the disease in the pancreas. On th…

NecrosisGSH reduced glutathioneSTAT3 signal transducer and activator of transcription 3ERK extracellular signal-regulated kinasesClinical BiochemistryCCK cholecystokininTRAFs TNF receptor associated factorsReview ArticleIκB kinasePharmacologymedicine.disease_causeBiochemistrySHP small heterodimer partnerSTIM1 stromal interaction molecule 1chemistry.chemical_compoundHATs histone acetyltransferasesMedicineASK1GCL glutamate cysteine ligaseTNF-α tumor necrosis factor alphaIKK IκB kinaseNOS nitric oxide synthaseAcute inflammationHIF hypoxia inducible factorlcsh:QH301-705.5NF-κB nuclear factor kappa BDAMPs damage-associated molecular pattern moleculeslcsh:R5-920biologyGSSG oxidized glutathioneNF-kappa BNLRs nucleotide-binding oligomerization domain (NOD) like receptorsTRADD tumor necrosis factor receptor type 1-associated DEATH domain proteinTRPC3 transient receptor potential channel 3VEGF vascular endothelial growth factorGlutathioneTNFR tumor necrosis factor receptorHMGB1 high-mobility group Box 1 proteinIP3R inositol 145-trisphosphate receptor type 3VCAM-1 Vascular Cell adhesion protein 1Acute DiseaseJNK c-Jun N-terminal kinaseAcute pancreatitisTLRs toll-like receptorsmedicine.symptomlcsh:Medicine (General)Oxidation-ReductionAP-1 activator protein-1Signal TransductionmRNA messenger ribonucleic acidHMGB1ASC apoptosis-associated speck-like protein containing a carboxy-terminal CARDRNS reactive nitrogen speciesPTPs protein tyrosine phosphatasesROS reactive oxygen speciesNADH nicotinamide adenine dinucleotidepHe extracellular pHFAEE fatty acid ethyl estersAP acute pancreatitisHumansXanthine oxidaseCBP CREB-binding proteinRyR endoplasmic reticulum membrane ryanodine receptorsMDA malondialdehydeNO nitric oxideXO xanthine oxidaseASK1 apoptosis signal-regulating kinase-1business.industryOrganic ChemistryAutophagyNADPH nicotinamide adenine dinucleotide phosphateHDACs histone deacetylasesmedicine.diseaseCARS compensatory anti-inflammatory response syndromeXDH xanthine dehydrogenaseIL interleukinIκB inhibitor of kappa BAcute pancreatitisETC Electron transport chainPancreatitisMKPs MAPK phosphatasesSAP severe acute pancreatitischemistrylcsh:Biology (General)DTT dithiothreitolOxidative stressNAC N-acetyl cysteineImmunologybiology.proteinCalciumLysosomesReactive Oxygen SpeciesbusinessMAPK mitogen-activated protein kinaseOxidative stressERCP endoscopic retrograde cholangiopancreatographyRedox Biology
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Minimally invasive interval debulking surgery in ovarian neoplasm (MISSION trial–NCT02324595): a feasibility study

2016

Background Laparoscopy has acquired an increasing role in the management of ovarian cancer. Laparoscopic cytoreduction could represent a new frontier for selected patients after neoadjuvant chemotherapy (NACT). Objective We sought to assess feasibility and early complication rate of minimally invasive (MI) interval debulking surgery (IDS) in stage III-IV epithelial ovarian cancer (EOC) patients after NACT. Study Design This is a phase II multicentric study in advanced EOC cases with clinical complete response after NACT, according to Gynecologic Cancer Intergroup and Response Evaluation Criteria In Solid Tumors criteria. Institutional review board approval was obtained and all patients sign…

Neoplasm Residualmedicine.medical_treatmentchemotherapyresidual0302 clinical medicine80 and overMedicineminimally invasive surgeryAged 80 and overOvarian Neoplasms030219 obstetrics & reproductive medicineadvanced ovarian cancerMedicine (all)Obstetrics and GynecologyCytoreduction Surgical ProceduresBowel resectionMiddle AgedDebulkinglaparoscopic cytoreductionNeoadjuvant TherapyIntestinesChemotherapy AdjuvantResponse Evaluation Criteria in Solid Tumors030220 oncology & carcinogenesisinterval debulking surgeryFemaleMedian bodyPeritoneumOmentumneoadjuvant chemotherapyAdultmedicine.medical_specialtyOvariectomyadvanced ovarian cancer; interval debulking surgery; laparoscopic cytoreduction; minimally invasive surgery; neoadjuvant chemotherapy; quality of life; Adult; Aged; Aged 80 and over; Appendectomy; Chemotherapy Adjuvant; Fallopian Tubes; Feasibility Studies; Female; Humans; Hysterectomy; Intestines; Middle Aged; Neoadjuvant Therapy; Neoplasm Recurrence Local; Neoplasm Residual; Omentum; Ovarian Neoplasms; Ovariectomy; Peritoneum; Cytoreduction Surgical Procedures; Laparoscopy; Medicine (all); Obstetrics and GynecologyHysterectomy03 medical and health sciencesadjuvantlocalAppendectomyHumansSurvival rateFallopian TubesAgedHysterectomybusiness.industryAdvanced ovarian cancer interval debulking surgery laparoscopic cytoreduction minimally invasive surgery neoadjuvant chemotherapy quality of life adult aged 80 and over appendectomy chemotherapy adjuvant fallopian tubes feasibility studies female humans hysterectomy intestines middle aged neoadjuvant therapy neoplasm recurrence local neoplasm residual omentum ovarian neoplasms ovariectomy peritoneum cytoreduction surgical procedures laparoscopyPerioperativeneoplasm recurrenceSurgerySettore MED/40 - GINECOLOGIA E OSTETRICIAquality of lifeFeasibility StudiesLaparoscopyLymphadenectomyNeoplasm Recurrence LocalbusinessneoplasmAmerican Journal of Obstetrics and Gynecology
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Caki-1 cells as a model system for the interaction of renally secreted drugs with OCT3.

2008

<i>Background/Aims:</i> Organic cation transporters (OCT) in the proximal tubules (PTs) participate in the renal secretion of several therapeutic agents. The exact role of OCT3 in renal secretion remains undetermined, partially due to the lack of an appropriate in vitro model system. The current work introduces the PT representative cell line, Caki-1, as a model system for studying the involvement of OCT3 in renal secretion. <i>Methods:</i> Caki-1 cells were characterized for OCT3 expression via real-time RT-PCR and immunocytochemical staining techniques. Uptake kinetics of OCT3 in Caki-1 cells was determined using prototypical substrates and inhibitors. Inhibition o…

Nephrologymedicine.medical_specialty1-Methyl-4-phenylpyridiniumOrganic Cation Transport ProteinsPhysiologyCell SurvivalUrinary systemmacromolecular substancesPharmacologyurologic and male genital diseasesCell LineXenobioticsKidney Tubules ProximalPhysiology (medical)Internal medicinemedicineHumansSecretionRNA MessengerKidneyOrganic cation transport proteinsbiologyDose-Response Relationship Drugbusiness.industryOrganic Cation Transporter 1Organic Cation Transporter 2Epithelial CellsGeneral MedicineDrug interactionmedicine.diseaseImmunohistochemistryQuaternary Ammonium CompoundsKineticsEndocrinologymedicine.anatomical_structureNephrologyRenal physiologybiology.proteinbusinessKidney diseaseNephron. Physiology
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Anaemia in the critically ill patient: monitoring of erythropoietin therapy

2006

Nephrologymedicine.medical_specialtyRemote patient monitoringAnemiaCritical IllnessUrologyTreatment outcomeInternal medicinemedicineHumansErythropoiesisIntensive care medicineErythropoietinAnemia Iron-DeficiencyDose-Response Relationship DrugCritically illbusiness.industrymedicine.diseaseRecombinant ProteinsSurgeryTreatment OutcomeIron-deficiency anemiaErythropoietinErythropoietin therapyHematinicsDrug Monitoringbusinessmedicine.drugBJU International
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Interleukin-6 (IL-6) and its soluble receptor support survival of sensory neurons

1999

The cytokine interleukin-6 (IL-6) has multiple functions in the immune and hematopoietic systems. IL-6 is related to ciliary neurotrophic factor (CNTF), a trophic factor for motoneurons, sensory dorsal root ganglion (DRG) neurons, and other neuronal subpopulations. Both act via related receptor complexes, consisting of one ligand-specific α-receptor subunit (IL-6R and CNTFR, respectively) and two signal-transducing receptor components. Even though IL-6 is expressed by neurons and glia, the functions of IL-6 in the nervous system are poorly understood. Here, we report that exogenous human IL-6 promotes the survival of dissociated newborn rat DRG neurons in vitro if supplemented with soluble …

Nervous systemCytoplasmCiliary neurotrophic factorCellular and Molecular NeuroscienceDorsal root ganglionNeurotrophic factorsGanglia SpinalNerve Growth FactormedicineAnimalsHumansCiliary Neurotrophic FactorNeurons AfferentReceptorAutocrine signallingInterleukin 6Cells CulturedCell DeathDose-Response Relationship DrugbiologyInterleukin-6Receptors Interleukin-6RatsCell biologyAutocrine Communicationmedicine.anatomical_structureAnimals Newbornnervous systembiology.proteinNeuroscienceNeurotrophinJournal of Neuroscience Research
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Designing Frame Relay WAN Networks with Trade-Off between Link Cost and Performance

2014

This paper is focused on the problem of designing a Wide Area Network topology with trade-off between link cost and response time to users. The L2 technology chosen for the research is a Frame Relay based solution. The link capacities in the network and the routes used by packets are determined in a way to minimize network cost and response time at the same time. In FR networks link capacity corresponds directly to CIR parameter which makes the presented numerical results very useful in practice, especially during preliminary network design in the Design Phase of the PPDIOO methodology.

Network planning and designEngineeringLink Access Procedure for Frame Relaybusiness.industryNetwork packetWide area networkFrame RelayTelecommunications linkResponse timeTopology (electrical circuits)businessComputer network
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COX-2 expression in the guinea pig cochlea is partly altered by moderate sound exposure.

2006

The cyclooxygenase-2 isoform (COX-2) was found recently to be constitutively expressed in the guinea pig inner ear. To gain knowledge about its role in sound perception, alterations in the COX-2 level of moderate noise-stimulated cochleae were determined. Staining intensities were quantified in different regions using an immunohistochemical staining procedure and computer-assisted system. After 70 dB and 90 dB noise exposure for 1 h at 8000 Hz, COX-2 downregulation was observed in the organ of Corti, which was most prominent in Deiters' cells near Hensen cells and outer hair cells. In pillar cells, COX-2 levels were only slightly reduced after 70 dB but strongly diminished after 90 dB expos…

NeuronsGeneral NeuroscienceGuinea PigsGene ExpressionStimulationDose-Response Relationship RadiationSound perceptionAnatomyBiologyImmunohistochemistryCell biologyCochleaSound exposuremedicine.anatomical_structureAcoustic StimulationOrgan of CortiCyclooxygenase 2Spiral ligamentotorhinolaryngologic diseasesmedicineAnimalsInner earsense organsSpiral ganglionCochleaNeuroscience letters
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Functional nicotinic acetylcholine receptors on subplate neurons in neonatal rat somatosensory cortex.

2004

The establishment of cortical synaptic circuits during early development requires the presence of subplate neurons (SPn's), a heterogeneous population of neurons capable to integrate and process synaptic information from the thalamus, cortical plate, and neighboring SPn's. An accumulation of cholinergic afferents and nicotinic acetylcholine receptors (nAChRs) has been documentated in the subplate around birth. To assess the developmental role of the cholinergic innervation onto SPn's, we used whole cell patch-clamp recordings of visually identified and biocytin-labeled SPn's in neonatal rat somatosensory cortex. Functional nAChRs were present in 92% of the investigated SPn's. Activation of…

NeuronsNeonatal ratNicotineDose-Response Relationship DrugPhysiologyGeneral NeuroscienceAction PotentialsSomatosensory CortexBiologyIn Vitro TechniquesReceptors NicotinicSomatosensory systemRatsHeterogeneous populationNicotinic agonistmedicine.anatomical_structurenervous systemSubplatemedicineAnimalsCarbacholRats WistarReceptorNeuroscienceAcetylcholine receptorJournal of neurophysiology
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Comparative analysis of eight cytotoxicity assays evaluated within the ACuteTox Project.

2013

A comparative analysis of eight cytotoxicity assays [the 3T3 and normal human keratinocytes Neutral Red Uptake (NRU) assay, the primary rat hepatocytes, human HepG2 and 3T3 MU assay, and the human A.704, SH-SY5Y and HepG2 cells propidium iodide (PI) assay] included in several work packages of the EU Integrated Project ACuteTox, has been carried out. The aim was to evaluate whether cells originating from liver, kidney and brain provided different in vitro acute toxicity results, and the influence of primary liver cells versus cell lines originated from the same tissue. Spearman rank correlation analysis and Hierarchical Cluster Analysis were performed based on the IC50 (50% inhibitory concen…

Neutral redCell SurvivalCytotoxicityBiologyToxicologyConcentration-response analysischemistry.chemical_compoundMiceCell Line TumorToxicity Tests AcuteAnimalsHumansMTT assayPropidium iodideCytotoxicityCells CulturedAcute toxicityCytotoxinsIn vitro toxicologyCorrelation analysisGeneral Medicine3T3 CellsMolecular biologyAcute toxicityRatsHierarchical Cluster AnalysischemistryCell cultureToxicityImmunologyIn vitro assaysHepatocytesToxicology in vitro : an international journal published in association with BIBRA
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