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Items: 30


Black Light Smokers: How Nicotine Intake and Carcinogen Exposure Differ Across Various Biobehavioral Factors.

St Helen G, Benowitz NL, Ahluwalia JS, Tyndale RF, Addo N, Gregorich SE, PĂ©rez-Stable EJ, Cox LS.

J Natl Med Assoc. 2019 May 10. pii: S0027-9684(19)30017-3. doi: 10.1016/j.jnma.2019.04.004. [Epub ahead of print]


Revolution or redux? Assessing IQOS through a precursor product.

Elias J, Dutra LM, St Helen G, Ling PM.

Tob Control. 2018 Nov;27(Suppl 1):s102-s110. doi: 10.1136/tobaccocontrol-2018-054327. Epub 2018 Oct 10.


Effects of Nicotine Metabolic Rate on Withdrawal Symptoms and Response to Cigarette Smoking After Abstinence.

Liakoni E, Edwards KC, St Helen G, Nardone N, Dempsey DA, Tyndale RF, Benowitz NL.

Clin Pharmacol Ther. 2019 Mar;105(3):641-651. doi: 10.1002/cpt.1238. Epub 2018 Oct 25.


IQOS: examination of Philip Morris International's claim of reduced exposure.

St Helen G, Jacob Iii P, Nardone N, Benowitz NL.

Tob Control. 2018 Nov;27(Suppl 1):s30-s36. doi: 10.1136/tobaccocontrol-2018-054321. Epub 2018 Aug 29.


Impact of e-liquid flavors on e-cigarette vaping behavior.

St Helen G, Shahid M, Chu S, Benowitz NL.

Drug Alcohol Depend. 2018 Aug 1;189:42-48. doi: 10.1016/j.drugalcdep.2018.04.032. Epub 2018 May 31.


Public Health Consequences of e-Cigarette Use.

St Helen G, Eaton DL.

JAMA Intern Med. 2018 Jul 1;178(7):984-986. doi: 10.1001/jamainternmed.2018.1600. Review. No abstract available.


Comparison of Urine 4-(Methylnitrosamino)-1-(3)Pyridyl-1-Butanol and Cotinine for Assessment of Active and Passive Smoke Exposure in Urban Adolescents.

Benowitz NL, Nardone N, Jain S, Dempsey DA, Addo N, St Helen G, Jacob P 3rd.

Cancer Epidemiol Biomarkers Prev. 2018 Mar;27(3):254-261. doi: 10.1158/1055-9965.EPI-17-0671. Epub 2018 Feb 23.


Tobacco papers and tobacco industry ties in regulatory toxicology and pharmacology.

Velicer C, St Helen G, Glantz SA.

J Public Health Policy. 2018 Feb;39(1):34-48. doi: 10.1057/s41271-017-0096-6. Epub 2017 Nov 7.


Impact of e-liquid flavors on nicotine intake and pharmacology of e-cigarettes.

St Helen G, Dempsey DA, Havel CM, Jacob P 3rd, Benowitz NL.

Drug Alcohol Depend. 2017 Sep 1;178:391-398. doi: 10.1016/j.drugalcdep.2017.05.042. Epub 2017 Jun 30.


Biomarkers of exposure to new and emerging tobacco delivery products.

Schick SF, Blount BC, Jacob P Rd, Saliba NA, Bernert JT, El Hellani A, Jatlow P, Pappas RS, Wang L, Foulds J, Ghosh A, Hecht SS, Gomez JC, Martin JR, Mesaros C, Srivastava S, St Helen G, Tarran R, Lorkiewicz PK, Blair IA, Kimmel HL, Doerschuk CM, Benowitz NL, Bhatnagar A.

Am J Physiol Lung Cell Mol Physiol. 2017 Sep 1;313(3):L425-L452. doi: 10.1152/ajplung.00343.2016. Epub 2017 May 18. Review.


Nicotine Delivery and Vaping Behavior During ad Libitum E-cigarette Access.

St Helen G, Ross KC, Dempsey DA, Havel CM, Jacob P 3rd, Benowitz NL.

Tob Regul Sci. 2016 Oct;2(4):363-376. doi: 10.18001/TRS.2.4.8.


Effect of UGT2B10, UGT2B17, FMO3, and OCT2 genetic variation on nicotine and cotinine pharmacokinetics and smoking in African Americans.

Taghavi T, St Helen G, Benowitz NL, Tyndale RF.

Pharmacogenet Genomics. 2017 Apr;27(4):143-154. doi: 10.1097/FPC.0000000000000269.


An Electronic Cigarette Vaping Machine for the Characterization of Aerosol Delivery and Composition.

Havel CM, Benowitz NL, Jacob P 3rd, St Helen G.

Nicotine Tob Res. 2017 Oct 1;19(10):1224-1231. doi: 10.1093/ntr/ntw147.


Disposition kinetics and metabolism of nicotine and cotinine in African American smokers: impact of CYP2A6 genetic variation and enzymatic activity.

Benowitz NL, St Helen G, Dempsey DA, Jacob P 3rd, Tyndale RF.

Pharmacogenet Genomics. 2016 Jul;26(7):340-50. doi: 10.1097/FPC.0000000000000222.


The Influence of Puff Characteristics, Nicotine Dependence, and Rate of Nicotine Metabolism on Daily Nicotine Exposure in African American Smokers.

Ross KC, Dempsey DA, St Helen G, Delucchi K, Benowitz NL.

Cancer Epidemiol Biomarkers Prev. 2016 Jun;25(6):936-43. doi: 10.1158/1055-9965.EPI-15-1034. Epub 2016 Mar 30.


Nicotine delivery, retention and pharmacokinetics from various electronic cigarettes.

St Helen G, Havel C, Dempsey DA, Jacob P 3rd, Benowitz NL.

Addiction. 2016 Mar;111(3):535-44. doi: 10.1111/add.13183. Epub 2015 Nov 11.


Intake of toxic and carcinogenic volatile organic compounds from secondhand smoke in motor vehicles.

St Helen G, Jacob P 3rd, Peng M, Dempsey DA, Hammond SK, Benowitz NL.

Cancer Epidemiol Biomarkers Prev. 2014 Dec;23(12):2774-82. doi: 10.1158/1055-9965.EPI-14-0548. Epub 2014 Nov 14.


Nicotine and carcinogen exposure after water pipe smoking in hookah bars.

St Helen G, Benowitz NL, Dains KM, Havel C, Peng M, Jacob P 3rd.

Cancer Epidemiol Biomarkers Prev. 2014 Jun;23(6):1055-66. doi: 10.1158/1055-9965.EPI-13-0939. Epub 2014 May 16.


Exposure of pregnant women to cookstove-related household air pollution in urban and periurban Trujillo, Peru.

St Helen G, Aguilar-Villalobos M, Adetona O, Cassidy B, Bayer CW, Hendry R, Hall DB, Naeher LP.

Arch Environ Occup Health. 2015;70(1):10-8. doi: 10.1080/19338244.2013.807761.


Genetic and pharmacokinetic determinants of response to transdermal nicotine in white, black, and Asian nonsmokers.

Dempsey DA, St Helen G, Jacob P 3rd, Tyndale RF, Benowitz NL.

Clin Pharmacol Ther. 2013 Dec;94(6):687-94. doi: 10.1038/clpt.2013.159. Epub 2013 Aug 9.


Stability of the nicotine metabolite ratio in smokers of progressively reduced nicotine content cigarettes.

St Helen G, Jacob P 3rd, Benowitz NL.

Nicotine Tob Res. 2013 Nov;15(11):1939-42. doi: 10.1093/ntr/ntt065. Epub 2013 May 14.


Biomarkers of secondhand smoke exposure in automobiles.

Jones IA, St Helen G, Meyers MJ, Dempsey DA, Havel C, Jacob P 3rd, Northcross A, Hammond SK, Benowitz NL.

Tob Control. 2014 Jan;23(1):51-7. doi: 10.1136/tobaccocontrol-2012-050724. Epub 2013 Jan 24.


Racial differences in the relationship between tobacco dependence and nicotine and carcinogen exposure.

St Helen G, Dempsey D, Wilson M, Jacob P 3rd, Benowitz NL.

Addiction. 2013 Mar;108(3):607-17. doi: 10.1111/j.1360-0443.2012.04077.x. Epub 2012 Nov 1.


Utility of urinary Clara cell protein (CC16) to demonstrate increased lung epithelial permeability in non-smokers exposed to outdoor secondhand smoke.

St Helen G, Holland NT, Balmes JR, Hall DB, Bernert JT, Vena JE, Wang JS, Naeher LP.

J Expo Sci Environ Epidemiol. 2013 Mar;23(2):183-9. doi: 10.1038/jes.2012.68. Epub 2012 Jul 18.


Dose-independent kinetics with low level exposure to nicotine and cotinine.

Benowitz NL, Dempsey D, Tyndale RF, St Helen G, Jacob P 3rd.

Br J Clin Pharmacol. 2013 Jan;75(1):277-9. doi: 10.1111/j.1365-2125.2012.04327.x. No abstract available.


Reproducibility of the nicotine metabolite ratio in cigarette smokers.

St Helen G, Novalen M, Heitjan DF, Dempsey D, Jacob P 3rd, Aziziyeh A, Wing VC, George TP, Tyndale RF, Benowitz NL.

Cancer Epidemiol Biomarkers Prev. 2012 Jul;21(7):1105-14. doi: 10.1158/1055-9965.EPI-12-0236. Epub 2012 May 2.


Exposure to secondhand smoke outside of a bar and a restaurant and tobacco exposure biomarkers in nonsmokers.

St Helen G, Bernert JT, Hall DB, Sosnoff CS, Xia Y, Balmes JR, Vena JE, Wang JS, Holland NT, Naeher LP.

Environ Health Perspect. 2012 Jul;120(7):1010-6. doi: 10.1289/ehp.1104413. Epub 2012 Apr 6.


Exposure and kinetics of polycyclic aromatic hydrocarbons (PAHs) in cigarette smokers.

St Helen G, Goniewicz ML, Dempsey D, Wilson M, Jacob P 3rd, Benowitz NL.

Chem Res Toxicol. 2012 Apr 16;25(4):952-64. doi: 10.1021/tx300043k. Epub 2012 Mar 29.


Particulate matter (PM2.5) and carbon monoxide from secondhand smoke outside bars and restaurants in downtown Athens, Georgia.

St Helen G, Hall DB, Kudon LH, Pearce J, Baptiste S, Ferguson S, Green T, Naeher LP.

J Environ Health. 2011 Oct;74(3):8-17.


Assessment of exposure to secondhand smoke at outdoor bars and family restaurants in Athens, Georgia, using salivary cotinine.

Hall JC, Bernert JT, Hall DB, St Helen G, Kudon LH, Naeher LP.

J Occup Environ Hyg. 2009 Nov;6(11):698-704. doi: 10.1080/15459620903249893.


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