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RESEARCH PRODUCT
Indicaxanthin from Opuntia ficus indica (L. Mill) Inhibits Oxidized LDL-Mediated Human Endothelial Cell Dysfunction through Inhibition of NF-κB Activation
Anna FrazzittaMario AllegraAlessandro AttanzioRosalia BusàMaria A. LivreaLuisa Tesorieresubject
0301 basic medicineAgingArticle SubjectTranscription GeneticCell SurvivalPyridineHuman Umbilical Vein Endothelial Cell030204 cardiovascular system & hematologyPharmacologyBiochemistryUmbilical vein03 medical and health scienceschemistry.chemical_compound0302 clinical medicineSettore BIO/10 - BiochimicamedicineRNA MessengerReactive Nitrogen SpecieEndothelial dysfunctionlcsh:QH573-671CytotoxicityReactive nitrogen specieschemistry.chemical_classificationReactive oxygen specieslcsh:CytologyNF-kappa BOpuntiaHydrogen PeroxideCell BiologyGeneral MedicineNFKB1medicine.diseaseSettore CHIM/08 - Chimica FarmaceuticaUp-RegulationLipoproteins LDLEndothelial stem cell030104 developmental biologychemistryCell Adhesion MoleculeBetaxanthinThiobarbituric Acid Reactive SubstanceReactive Oxygen SpecieOxidation-ReductionIndicaxanthinATP Binding Cassette Transporter 1Humandescription
Oxidized low-density lipoproteins (oxLDL) play a pivotal role in the etiopathogenesis of atherosclerosis through the activation of inflammatory signaling events eventually leading to endothelial dysfunction and senescence. In the present work, we investigated the effects of indicaxanthin, a bioavailable, redox-modulating phytochemical from Opuntia ficus indica fruits, with anti-inflammatory activity, against oxLDL-induced endothelial dysfunction. Human umbilical vein cord cells (HUVEC) were stimulated with human oxLDL, and the effects of indicaxanthin were evaluated in a range between 5 and 20 μM, consistent with its plasma level after a fruit meal (7 μM). Pretreatment with indicaxanthin significantly and concentration-dependently inhibited oxLDL-induced cytotoxicity; ICAM-1, VCAM-1, and ELAM-1 increase; and ABC-A1 decrease of both protein and mRNA levels. From a mechanistic perspective, we also provided evidence that the protective effects of indicaxanthin were redox-dependent and related to the pigment efficacy to inhibit NF-κB transcriptional activity. In conclusion, here we demonstrate indicaxanthin as a novel, dietary phytochemical, able to exert significant protective vascular effects in vitro, at nutritionally relevant concentrations.
year | journal | country | edition | language |
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2019-02-18 | Oxidative Medicine and Cellular Longevity |