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RESEARCH PRODUCT
Bisphenol-A impairs insulin action and up-regulates inflammatory pathways in human subcutaneous adipocytes and 3T3-L1 cells.
Francesco BeguinotMichele LongoPietro FormisanoFrancesco OrienteSerena CabaroVittoria D'espositoFederica PassarettiGiuseppe PerruoloRossella ValentinoAntonietta Liottisubject
Leptinmedicine.medical_treatmentAdipose tissuechemistry.chemical_compoundMice0302 clinical medicineAdipocyteAdipocytesInsulinPhosphorylation0303 health sciencesMultidisciplinaryPERSISTENT ORGANIC POLLUTANTS BODY-MASS INDEX METABOLIC SYNDROME ENVIRONMENTAL CONTAMINANTS CARDIOVASCULAR-DISEASE ENDOCRINE DISRUPTORS SERUM CONCENTRATIONS WIDESPREAD EXPOSURE PERINATAL EXPOSURE DIABETES-MELLITUSbiologyQRNF-kappa BCell Differentiation3. Good healthUp-RegulationAdipogenesisMedicinehormones hormone substitutes and hormone antagonistsResearch ArticleSignal TransductionSTAT3 Transcription Factormedicine.medical_specialtyendocrine systemScienceSubcutaneous FatDown-Regulation030209 endocrinology & metabolism03 medical and health sciencesDownregulation and upregulationPhenolsInternal medicine3T3-L1 CellsmedicineAnimalsHumansRNA MessengerBenzhydryl Compounds030304 developmental biologyInflammationurogenital systemInsulinJNK Mitogen-Activated Protein KinasesReceptor InsulinInsulin receptorEndocrinologyGlucosechemistry13. Climate actionbiology.proteinCytokine secretionGLUT4description
Current evidence indicates that chemical pollutants may interfere with the homeostatic control of nutrient metabolism, thereby contributing to the increased prevalence of metabolic disorders. Bisphenol-A (BPA) is a lipophilic compound contained in plastic which is considered a candidate for impairing energy and glucose metabolism. We have investigated the impact of low doses of BPA on adipocyte metabolic functions. Human adipocytes derived from subcutaneous adipose tissue and differentiated 3T3-L1 cells were incubated with BPA, in order to evaluate the effect on glucose utilization, insulin sensitivity and cytokine secretion. Treatment with 1 nM BPA significantly inhibited insulin-stimulated glucose utilization, without grossly interfering with adipocyte differentiation. Accordingly, mRNA levels of the adipogenic markers PPARγ and GLUT4 were unchanged upon BPA exposure. BPA treatment also impaired insulin-activated receptor phosphorylation and signaling. Moreover, adipocyte incubation with BPA was accompanied by increased release of IL-6 and IFN-γ, as assessed by multiplex ELISA assays, and by activation of JNK, STAT3 and NFkB pathways. Treatment of the cells with the JNK inhibitor SP600125 almost fully reverted BPA effect on insulin signaling and glucose utilization. In conclusion, low doses of BPA interfere with inflammatory/insulin signaling pathways, leading to impairment of adipose cell function.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-12-01 | PloS one |