Search results for "Coumestrol"

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ERa dimerization: a key factor for the weak estrogenic activity of an ERa modulator unable to compete with estradiol in binding assays

2016

PMID: 27400858; International audience; AbstractEstrothiazine (ESTZ) is a weak estrogen sharing structural similarities with coumestrol. ESTZ failed to compete with [3H]17β-estradiol ([3H]17β-E2) for binding to the estrogen receptor α (ERα), questioning its ability to interact with the receptor. However, detection by atomic force spectroscopy (AFS) of an ESTZ-induced ERα dimerization has eliminated any remaining doubts. The effect of the compound on the proliferation of ERα-positive and negative breast cancer cells confirmed the requirement of the receptor. The efficiency of ESTZ in MCF-7 cells was weak without any potency to modify the proliferation profile of estradiol and coumestrol. Gro…

0301 basic medicinemedicine.medical_specialtyTranscription Geneticmedicine.drug_class[SDV]Life Sciences [q-bio]ThiazinesEstrogen receptorBreast NeoplasmsPhytoestrogensCoumestrol[ CHIM ] Chemical SciencesBiochemistry[SPI.MAT]Engineering Sciences [physics]/Materials03 medical and health scienceschemistry.chemical_compound0302 clinical medicineInternal medicinemedicineHumans[CHIM]Chemical SciencesBinding site[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsReceptorMolecular BiologyEstrogen receptor beta[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]Binding Sites[ SDV ] Life Sciences [q-bio]EstradiolSpectrophotometry AtomicEstrogen Receptor alphaCell BiologyCell biologyTranscription Factor AP-1030104 developmental biologyEndocrinologychemistryMechanism of actionEstrogen030220 oncology & carcinogenesisMCF-7 CellsFemalemedicine.symptomDimerizationEstrogen receptor alphaProtein Binding
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Influence of arbuscular mycorrhizal colonisation on cadmium induced Medicago truncatula root isoflavonoid accumulation.

2012

Cadmium is a serious environmental pollution threats to the planet. Its accumulation in plants affects many cellular functions, resulting in growth and development inhibition, whose mechanisms are not fully understood. However, some fungi forming arbuscular mycorrhizal symbiosis with the majority of plant species have the capacity to buffer the deleterious effect of this heavy metal. In the present work we investigated the capacity of Rhizophagus irregularis (syn. Glomus irregularis) to alleviate cadmium stress in Medicago truncatula. In spite of a reduction in all mycorrhizal parameters, plants colonized for 21 days by R. irregularis and treated by 2 mg kg(-1) cadmium displayed less growth…

Rhizophagus irregularisCoumestrolPterocarpansPhysiology[SDV]Life Sciences [q-bio]chemistry.chemical_elementmycorrhizaDown-RegulationEnvironmental pollutionPlant SciencePlant Rootschemistry.chemical_compoundSoilIsoflavonoidGlucosidesGene Expression Regulation PlantMycorrhizaeBotanyMedicago truncatulaGeneticsMedicarpinBiomassMycorrhizaheavy metalsGlomeromycotaSymbiosisGlomusPlant ProteinsCadmiumbiologyfungifood and beveragesbiology.organism_classificationisoflavonoidsIsoflavonesMedicago truncatulaAlcohol Oxidoreductaseschemistry[SDE]Environmental Sciencesleguminous plantsPlant ShootsCadmiumPlant physiology and biochemistry : PPB
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