Search results for "MTT"

showing 10 items of 91 documents

Tumor cell specific toxicity of Inula helenium extracts.

2006

The aim of the research program was to identify botanical extracts with antineoplastic activity. In this respect extracts prepared from Inula helenium roots showed a remarkable activity. As evidenced by the MTT assay, the Inula helenium extract revealed a highly selective toxicity toward four different tumor cell lines (HT-29, MCF-7, Capan-2 and G1), but a much lower toxicity against healthy human peripheral blood lymphocytes (PBLs) from two donors. The extract-induced death of tumor cells was studied extensively by electron microscopy. There was a remarkable similarity of morphological alterations observed in the four cell lines: patchy chromatin condensations, cytoplasmic vesiculation, sw…

Programmed cell deathCell SurvivalContext (language use)Plant RootsLethal Dose 50Cell Line TumorToxicity Tests AcuteHumansMTT assayLymphocytesAnnexin A5CytotoxicityPharmacologyInulabiologyMutagenicity TestsPlant Extractsbiology.organism_classificationMolecular biologyAntineoplastic Agents PhytogenicApoptosisCell cultureImmunologyInulaHT29 CellsHeleniumPhytotherapy research : PTR
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Anti-Proliferative Activity of A Hydrophilic Extract of Manna from Fraxinus angustifolia Vahl through Mitochondrial Pathway-Mediated Apoptosis and Ce…

2020

Manna is produced from the spontaneous solidification of the sap of some Fraxinus species, and, owing its content in mannitol, is used in medicine as a mild laxative. Manna is also a rich source of characteristic bio-phenols with reducing, antioxidant and anti-inflammatory properties. This study assesses the activity of a hydrophilic extract of manna (HME) on cellular and molecular events in human colon-rectal cancer cells. HME showed a time- and concentration-dependent anti-proliferative activity, measured by MTT assay, in all the cell lines examined, namely Caco-2, HCT-116 and HT-29. The amounts of HME that caused 50% of cell death after a 24 h treatment were 8.51 &plusmn

Programmed cell deathCell cycle checkpointPharmaceutical ScienceCaspase 3anticancerAnalytical Chemistrylcsh:QD241-441<i>Fraxinus angustifolia</i>03 medical and health sciences0302 clinical medicinelcsh:Organic chemistrySettore BIO/10 - BiochimicaDrug DiscoverymedicineMTT assayPhysical and Theoretical Chemistry030304 developmental biologyFraxinus angustifolia0303 health sciencesChemistryOrganic ChemistryapoptosisSettore CHIM/08 - Chimica FarmaceuticaMolecular biologyChemistry (miscellaneous)Apoptosis030220 oncology & carcinogenesisCancer cellMolecular Medicinecolon cancer cellsMannitolIntracellularmannamedicine.drugMolecules
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Cytotoxicity, antibacterial and physicochemical properties of a new epoxy resin-based endodontic sealer containing calcium hydroxide

2019

Background This study evaluated the cytotoxicity, antibacterial and physicochemical properties of a new epoxy resin-based endodontic sealer containing calcium-hydroxide Sealer Plus. AH Plus was used as a reference for comparison. Material and Methods Cytotoxicity evaluation was performed according to ISO-10993-5 specifications using MTT assay to check the 3T3 cells viability at 1- to 4-week periods. Antibacterial activity was evaluated using a direct contact test against Enterococcus faecalis. Radiopacity, solubility and flow evaluations were performed according to ISO-6876/2012 specifications. Setting time was assessed following the ANSI/ADA-standard-n.57. The pH level was measured at 3,24…

Radiodensity0206 medical engineering02 engineering and technologyEnterococcus faecalisOperative Dentistry and Endodontics03 medical and health scienceschemistry.chemical_compound0302 clinical medicineMTT assayCytotoxicityGeneral DentistryRoot Canal ObturationCalcium hydroxidebiologyChemistryResearch030206 dentistryEpoxybiology.organism_classification:CIENCIAS MÉDICAS [UNESCO]020601 biomedical engineeringvisual_artOBTURAÇÃO DO CANAL RADICULARUNESCO::CIENCIAS MÉDICASvisual_art.visual_art_mediumAntibacterial activityNuclear chemistry
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Mboat7 down-regulation by hyper-insulinemia induces fat accumulation in hepatocytes.

2020

Background: Naturally occurring variation in Membrane-bound O-acyltransferase domain-containing 7 (MBOAT7), encoding for an enzyme involved in phosphatidylinositol acyl-chain remodelling, has been associated with fatty liver and hepatic disorders. Here, we examined the relationship between hepatic Mboat7 down-regulation and fat accumulation. Methods: Hepatic MBOAT7 expression was surveyed in 119 obese individuals and in experimental models. MBOAT7 was acutely silenced by antisense oligonucleotides in C57Bl/6 mice, and by CRISPR/Cas9 in HepG2 hepatocytes. Findings: In obese individuals, hepatic MBOAT7 mRNA decreased from normal liver to steatohepatitis, independently of diabetes, inflammatio…

Research paperTGFβ Transforming Growth Factor BetaIntracellular SpaceCRISPR Clustered Regularly Interspaced Short Palindromic RepeatshHEPS Human HepatocytesMice0302 clinical medicineLPIAT1DAG Diacylglyceroli.p. Intraperitonealmedia_commonFatty AcidsGeneral Medicine3. Good health030220 oncology & carcinogenesisHOMA-IR homeostasis Model Assessment of Insulin ResistanceMPO morpholinolcsh:Medicine (General)medicine.medical_specialtyPE Phosphatidyl-EthanolamineNashGeneral Biochemistry Genetics and Molecular Biology03 medical and health sciencesTNFα tumor Necrosis Factor AlphaLDL Low Density LipoproteinsHyperinsulinismNAFLDSD Standard Dietmedia_common.cataloged_instanceHumansCPT1 Carnitine Palmitoyltransferase IPhosphatidylinositolGene SilencingEuropean unionVLDL Very Low Density Lipoproteinlcsh:RhHSC Human Hepatic Stellate Cellsmedicine.diseaseLipid MetabolismOA Oleic AcidCI Confidence IntervalMboat7 Membrane bound O-acyltransferase domain containing 7MCD methionine choline deficient diet030104 developmental biologyEndocrinologychemistryCDP Cytidine-DiphosphateFOXO1 Forkhead Box protein O1NAFLD nonalcoholic fatty liver diseaseSteatohepatitisBMI Body Mass IndexCL CardiolipinAcyltransferases0301 basic medicineAlcoholic liver diseaseCXCL10 C-X-C Motif Chemokine 10lcsh:Medicinechemistry.chemical_compoundNon-alcoholic Fatty Liver DiseaseIFG Impaired Fasting GlucoseAPOB Apolipoprotein BNonalcoholic fatty liver diseasePIP Phosphatidyl-Inositol-PhosphateSteatohepatitisqRT-PCR quantitative Real Time Polymerase Chain ReactionMice Knockoutlcsh:R5-920ORO Oil Red O StainingPI PhosphatidylinositolFatty liverTM6SF2 Transmembrane 6 Superfamily Member 2PhospholipidTAG TriglyceridesNASH Nonalcoholic SteatohepatitisLipogenesisLPA Lyso-Phosphatidic AcidPhosphatidylinositolSignal TransductionPS Phosphatidyl-SerinePA Palmitic AcidALD alcoholic liver diseasePC Phosphatidylcholinei.v. IntravenousFATP1 Fatty Acid Transport Protein 1Models BiologicalInternal medicinemedicineAnimalsNonalcoholic fatty liver diseasePPARα Peroxisome Proliferator-Activated Receptor alphaObesityG3P Glyceraldehyde-3-PhosphateSREBP1c Sterol Regulatory Element-Binding Protein 1HDL High Density Lipoproteinsbusiness.industryPI3K Phosphatidylinositol 3 KinaseMembrane ProteinsNHEJ Non-Homologues End JoiningPNPLA3 Patatin-like Phospholipase Domain-containing-3MTTP Microsomal Triglyceride Transfer ProteinLPIAT1 Lysophosphatidylinositol Acyltransferase 1TMC4 Transmembrane Channel-Like 4Disease Models AnimalGene Expression RegulationHepatocytesFOXA2 Forkhead Box A2mTOR mammalian target of RapamycinSteatosisInsulin ResistancebusinessPG Phosphatidyl-GlycerolFABP1 Fatty Acid-Binding Protein 1 FAS Fatty Acid SynthaseT2DM Type 2 Diabetes MellitusEBioMedicine
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Comparative cytotoxicity study of enniatins A, A1, A2, B, B1, B4 and J3 on Caco-2 cells, Hep-G2 and HT-29

2011

Abstract Enniatins (ENs) are ionophoric, phytotoxic, antihelminthic, and antibiotic compounds of hexadepsipeptidic structure produced by several strains of Fusarium spp. The cytotoxicity effect of the ENs A, A 1 , A 2 , B, B 1 , B 4 and J 3 was compared on three tumor cell lines, the human epithelial colorectal adenocarcinoma (Caco-2), the human colon carcinoma (HT-29), and the human liver carcinoma (Hep-G2). The endpoint evaluated was the mitochondrial integrity by using the MTT assays, after 24 and 48 h of incubation. The IC 50 value for EN A 2 on Caco-2 cells, after 24 h exposure, was 18.7 ± 4.5 μM and decrease to 2.6 ± 0.7 μM at 48 h of incubation. However, ENs A, A 1 , B 1 and B 4 exer…

StereochemistryGeneral MedicineBiologyToxicologyMolecular biologyHep G2Caco-2Cell cultureToxicityCytotoxic T cellMTT assayCytotoxicityIncubationFood ScienceFood and Chemical Toxicology
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The Influence of Hyaluronic Acid Biofunctionalization of a Bovine Bone Substitute on Osteoblast Activity In Vitro

2021

Bovine bone substitute materials (BSMs) are used for oral bone regeneration. The objective was to analyze the influence of BSM biofunctionalization via hyaluronic acid (HA) on human osteoblasts (HOBs). BSMs with ± HA were incubated with HOBs including HOBs alone as a negative control. On days 3, 7 and 10, cell viability, migration and proliferation were analyzed by fluorescence staining, scratch wound assay and MTT assay. On days 3, 7 and 10, an increased cell viability was demonstrated for BSM+ compared with BSM− and the control (each p ≤ 0.05). The cell migration was enhanced for BSM+ compared with BSM− and the control after day 3 and day 7 (each p ≤ 0.05). At day 10, an accelerated wound…

Technology02 engineering and technologyArticleAndrology03 medical and health scienceschemistry.chemical_compound0302 clinical medicineHyaluronic acidhyaluronic acidmedicineGeneral Materials ScienceMTT assayViability assayxenograftoral regenerationBone regenerationMicroscopyQC120-168.85TbovineQH201-278.5biofunctionalizationosteoblastsOsteoblastCell migration030206 dentistrybone substituteEngineering (General). Civil engineering (General)021001 nanoscience & nanotechnologyIn vitroTK1-9971Bovine bonemedicine.anatomical_structureDescriptive and experimental mechanicschemistryElectrical engineering. Electronics. Nuclear engineeringTA1-20400210 nano-technologyMaterials
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Interactive effects of zearalenone and its metabolites on cytotoxicity and metabolization in ovarian CHO-K1 cells.

2014

Zearalenone (ZEA) is a non-steroidal estrogen mycotoxin with high binding affinity to estrogen receptors. ZEA is rapidly absorbed and metabolized in vivo to α-zearalenol (α-ZOL) and β-zearalenol (β-ZOL). So, mixtures of them may be present in biological systems and suppose a hazard to animals and human health. The aims of this study were to determine the cytotoxic effects of ZEA and its metabolites, alone and in combination in ovarian (CHO-K1) cells during 24, 48 and 72h by the MTT assay; and to investigate the metabolism of the CHO-K1 cells on ZEA, and its conversion into α-ZOL and β-ZOL by CHO-K1 cell after 24 and 48h of exposure. The IC50 value obtained for individual mycotoxins range fr…

Time FactorsCHO CellsToxicologyMass Spectrometrychemistry.chemical_compoundInhibitory Concentration 50CricetulusIn vivoCricetinaeZeranolAnimalsMTT assayEstrogens Non-SteroidalMycotoxinIC50ZearalenoneChromatographyfood and beveragesGeneral MedicineMetabolismMycotoxinschemistryZearalenoneZeranolFemaleAntagonismChromatography LiquidToxicology in vitro : an international journal published in association with BIBRA
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Arthrinins A–D: Novel diterpenoids and further constituents from the sponge derived fungus Arthrinium sp.

2011

Bioassay-guided fractionation of a methanolic extract of the fungus Arthrinium sp., isolated from the Mediterranean sponge Geodia cydonium, afforded 10 natural products including five new diterpenoids, arthrinins A-D (1-4) and myrocin D (5). In addition, five known compounds were obtained, which included myrocin A (6), norlichexanthone (7), anomalin A (8), decarboxycitrinone (9) and 2,5-dimethyl-7-hydroxychromone (10). The structures of all isolated compounds were unambiguously elucidated based on extensive 1D and 2D NMR and HR-MS analyzes. The absolute configuration of arthrinins A-D (1-4) was established by the convenient Mosher method performed in NMR tubes and by interpretation of the R…

Vascular Endothelial Growth Factor AClinical BiochemistryPharmaceutical ScienceAntineoplastic AgentsBiochemistryMiceAscomycotaCell Line TumorNeoplasmsDrug DiscoveryAnimalsHumansMTT assayCytotoxicityProtein Kinase InhibitorsMolecular BiologyNeovascularization PathologicKinaseChemistryOrganic ChemistryTerpenoidIn vitroPoriferaEndothelial stem cellVascular endothelial growth factor ABiochemistryCell cultureMolecular MedicineDiterpenesProtein KinasesBioorganic &amp; Medicinal Chemistry
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Comparison of growth &amp; function of endothelial progenitor cells cultured on deproteinized bovine bone modified with covalently bound fibronectin …

2016

Objectives The objective of this study was to assess and compare the growth and function of Endothelial Progenitor Cells (EPCs) cultured on covalently bonded Vascular Endothelial Growth Factor (VEGF) and covalently bonded Fibronectin (FN) coating on deproteinized bovine bone (DBB) (test samples), compared to non-modified DBB blocks (control sample). Materials and methods The test samples were prepared by plasma polymerization of allylamine onto DBB blocks. Group1 of test samples were prepared with VEGF coating (VEGF-DBB) where as the Group2 test samples were coated with FN (FN-DBB). Non-modified DBB blocks served as a Control. EPCs were isolated and cultivated from buffy coats of peripheral…

Vascular Endothelial Growth Factor ANitric Oxide Synthase Type IIIAngiogenesis0206 medical engineeringNitric Oxide Synthase Type IICell CountEnzyme-Linked Immunosorbent Assay02 engineering and technologyReal-Time Polymerase Chain ReactionCell morphologyAllylamine03 medical and health scienceschemistry.chemical_compound0302 clinical medicineEnosAnimalsHumansMTT assayProgenitor cellCells CulturedCell ProliferationEndothelial Progenitor CellsMicroscopy Confocalbiology030206 dentistrybiology.organism_classification020601 biomedical engineeringMolecular biologyFibronectinsVascular endothelial growth factorFibronectinchemistryBone SubstitutesImmunologybiology.proteinCattleOral SurgeryClinical Oral Implants Research
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Activity investigation of pinostrobin towards herpes simplex virus-1 as determined by atomic force microscopy

2009

In the present study, the antiviral activity of pinostrobin towards herpes simplex virus-1 (HSV-1) was investigated by MTT assay and atomic force microscopy. Pinostrobin can inhibit HSV-1 replication with 50% effective concentration (EC(50)) of 22.71 ± 1.72 μg/ml. MTT assay showed HSV-1 was significantly inhibited when pretreated with pinostrobin, with the inhibition of 85.69 ± 2.59%. Significant changes in morphology and size of HSV-1 were observed by atomic force microscopy (AFM) in response to pinostrobin treatment. AFM topography and phase images showed that with increasing time, the envelope was shedded and damaged, finally leading to virus inactivation. With increasing concentration, …

Virus inactivationPharmaceutical ScienceMice Inbred StrainsHerpesvirus 1 HumanMicrobial Sensitivity TestsMicroscopy Atomic Forcemedicine.disease_causePhase imageMiceIn vivoChlorocebus aethiopsDrug DiscoverymedicineAnimalsMTT assayTreatment effectVero CellsPharmacologyPlant ExtractsChemistryAtomic force microscopyHerpes SimplexVirologyHerpes simplex virusComplementary and alternative medicineFlavanonesBiophysicsVero cellMolecular MedicinePhytotherapyPhytomedicine
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