6533b7dafe1ef96bd126e274

RESEARCH PRODUCT

Effects of Plant Sterols or β-Cryptoxanthin at Physiological Serum Concentrations on Suicidal Erythrocyte Death.

Amparo AlegríaAlessandro AttanzioLuisa TesoriereAndrea Alvarez-salaGabriel López-garcíaAntonio CillaReyes Barberá

subject

0301 basic medicineHemolysiErythrocytesCampesterolBeta-CryptoxanthinEryptosisStigmasterolPharmacologymedicine.disease_causeHemolysisβ-cryptoxanthin03 medical and health scienceschemistry.chemical_compound0302 clinical medicinetert-ButylhydroperoxidemedicineHumansCells Culturedphytosteroloxidative streStigmasterolChemistryCholesterolPhytosterolChemistry (all)PhytosterolsGeneral ChemistryGlutathionemedicine.diseaseSitosterolGlutathioneSitosterolsHemolysisErythrocyteOxidative Stress030104 developmental biologyCholesterolAgricultural and Biological Sciences (all)030220 oncology & carcinogenesiseryptosiGeneral Agricultural and Biological SciencesIntracellularOxidative stressHuman

description

The eryptotic and hemolytic effects of a phytosterol (PS) mixture (β-sitosterol, campesterol, stigmasterol) or β-cryptoxanthin (β-Cx) at physiological serum concentration and their effect against oxidative stress induced by tert-butylhydroperoxide (tBOOH) (75 and 300 μM) were evaluated. β-Cryptoxanthin produced an increase in eryptotic cells, cell volume, hemolysis, and glutathione depletion (GSH) without ROS overproduction and intracellular Ca2+influx. Co-incubation of both bioactive compounds protected against β-Cx-induced eryptosis. Under tBOOH stress, PS prevented eryptosis, reducing Ca2+influx, ROS overproduction and GSH depletion at 75 μM, and hemolysis at both tBOOH concentrations. β-Cryptoxanthin showed no cytoprotective effect. Co-incubation with both bioactive compounds completely prevented hemolysis and partially prevented eryptosis as well as GSH depletion induced by β-Cx plus tBOOH. Phytosterols at physiological serum concentrations help to prevent pro-eryptotic and hemolytic effects and are promising candidate compounds for ameliorating eryptosis-associated diseases.

10.1021/acs.jafc.7b05575https://pubmed.ncbi.nlm.nih.gov/29345907