Featured Publications
Formation of flavorant–propylene Glycol Adducts With Novel Toxicological Properties in Chemically Unstable E-Cigarette Liquids
Erythropel HC, Jabba SV, DeWinter TM, Mendizabal M, Anastas PT, Jordt SE, Zimmerman JB. Formation of flavorant–propylene Glycol Adducts With Novel Toxicological Properties in Chemically Unstable E-Cigarette Liquids. Nicotine & Tobacco Research 2018, 21: 1248-1258. PMID: 30335174, PMCID: PMC6698951, DOI: 10.1093/ntr/nty192.Peer-Reviewed Original ResearchConceptsFlavor aldehydesSolvent componentsNuclear magnetic resonance spectroscopyNovel chemical speciesReaction productsPhysiological aqueous solutionE-cigarette liquidsReactive chemical systemsToxicological propertiesCommercial e-liquidsMagnetic resonance spectroscopyE-liquidsAqueous mediaPropylene glycolAqueous solutionPotential toxicological effectsNew compoundsUltraviolet spectroscopyChemical speciesChemical reactionsGas chromatographyChemical systemsResonance spectroscopyToxicological effectsAldehydes
2024
A Review of the Toxicity of Ingredients in e-Cigarettes, Including Those Ingredients Having the FDA’s “Generally Recognized as Safe (GRAS)” Regulatory Status for Use in Food
Kassem N, Strongin R, Stroup A, Brinkman M, El-Hellani A, Erythropel H, Etemadi A, Exil V, Goniewicz M, Kassem N, Klupinski T, Liles S, Muthumalage T, Noël A, Peyton D, Wang Q, Rahman I, Valerio L. A Review of the Toxicity of Ingredients in e-Cigarettes, Including Those Ingredients Having the FDA’s “Generally Recognized as Safe (GRAS)” Regulatory Status for Use in Food. Nicotine & Tobacco Research 2024, ntae123. PMID: 38783714, DOI: 10.1093/ntr/ntae123.Peer-Reviewed Original ResearchExtract Manufacturers AssociationE-cigarettesE-cigarette productsFood ingredientsFood additivesPrevalence of e-cigarette useGRAS substancesGRASE-liquidsE-cigarette useFoodIngredientsE-cigarette toxicityEvidence of adverse effectsProduct ingredientsToxicity of ingredientsE-liquid ingredientsDrug and Cosmetic ActOral consumptionRegulatory statusElectronic cigarettesChemical compoundsToxicological evaluationProduct labelsRefill liquids
2022
Synthetic Cooling Agents in US-marketed E-cigarette Refill Liquids and Popular Disposable E-cigarettes: Chemical Analysis and Risk Assessment
Jabba SV, Erythropel HC, Torres DG, Delgado LA, Woodrow JG, Anastas PT, Zimmerman JB, Jordt SE. Synthetic Cooling Agents in US-marketed E-cigarette Refill Liquids and Popular Disposable E-cigarettes: Chemical Analysis and Risk Assessment. Nicotine & Tobacco Research 2022, 24: 1037-1046. PMID: 35167696, PMCID: PMC9199944, DOI: 10.1093/ntr/ntac046.Peer-Reviewed Original ResearchConceptsMargin of exposureE-cigarettesE-liquidsE-cigarette productsWS-23Tobacco product initiationE-cigarette refill liquidsE-cigarette useAdditional health risksHealth risksMenthol-flavoured productsMenthol-flavored e-cigarettesProduct initiationAssociated health risksTobacco productsRefill liquidsSafe marginE-cigarette brandsRiskExposureSynthetic coolantsWS-3Consumer exposureRisk assessment parametersFlavor varieties
2020
Chemical Adducts of Reactive Flavor Aldehydes Formed in E-Cigarette Liquids Are Cytotoxic and Inhibit Mitochondrial Function in Respiratory Epithelial Cells
Jabba SV, Diaz AN, Erythropel HC, Zimmerman JB, Jordt SE. Chemical Adducts of Reactive Flavor Aldehydes Formed in E-Cigarette Liquids Are Cytotoxic and Inhibit Mitochondrial Function in Respiratory Epithelial Cells. Nicotine & Tobacco Research 2020, 22: s25-s34. PMID: 33320255, PMCID: PMC8224836, DOI: 10.1093/ntr/ntaa185.Peer-Reviewed Original ResearchConceptsRespiratory epithelial cellsBEAS-2B cellsE-cigarette aerosolEpithelial cellsEffect of benzaldehydeE-liquidsMetabolic toxic effectsPrimary human nasal epithelial cellsHuman nasal epithelial cellsInhalation toxicity studiesElectronic nicotine delivery systemsCell metabolic assayNasal epithelial cellsMitochondrial functionAlveolar epithelial cellsE-cigarette liquidsFlavor aldehydesNicotine delivery systemsEnergy metabolic functionsE-cigarette usersEdU cell proliferationConcentration-dependent mannerSpare respiratory capacityInhibits mitochondrial functionLIVE/DEAD cell assay
2017
The effect of sucralose on flavor sweetness in electronic cigarettes varies between delivery devices
Rosbrook K, Erythropel HC, DeWinter TM, Falinski M, O’Malley S, Krishnan-Sarin S, Anastas PT, Zimmerman JB, Green BG. The effect of sucralose on flavor sweetness in electronic cigarettes varies between delivery devices. PLOS ONE 2017, 12: e0185334. PMID: 28968411, PMCID: PMC5624589, DOI: 10.1371/journal.pone.0185334.Peer-Reviewed Original ResearchConceptsCommercial e-liquidsDelivery systemConcentrations of sucraloseE-liquid aerosolLC/MSE-liquidsVolatile flavor componentsLiquid delivery systemChemical compoundsChemical analysisArtificial sweetenersE-cigarette designFlavor additivesDelivery devicesVolatile constituentsFlavor componentsSweetener sucraloseVolatile chemicalsSweet aromaCartridge systemSufficient concentrationSucraloseEffect of sucralose