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Evaluation of Bronchoalveolar Lavage Fluid from Patients in an Outbreak of E-cigarette, or Vaping, Product Use-Associated Lung Injury - 10 States, August-October 2019.

Blount BC, Karwowski MP, Morel-Espinosa M, Rees J, Sosnoff C, Cowan E, Gardner M, Wang L, Valentin-Blasini L, Silva L, De Jesús VR, Kuklenyik Z, Watson C, Seyler T, Xia B, Chambers D, Briss P, King BA, Delaney L, Jones CM, Baldwin GT, Barr JR, Thomas J, Pirkle JL.

MMWR Morb Mortal Wkly Rep. 2019 Nov 15;68(45):1040-1041. doi: 10.15585/mmwr.mm6845e2.


Designing traceable opioid material§ kits to improve laboratory testing during the U.S. opioid overdose crisis.

Mojica MA, Carter MD, Isenberg SL, Pirkle JL, Hamelin EI, Shaner RL, Seymour C, Sheppard CI, Baldwin GT, Johnson RC.

Toxicol Lett. 2019 Dec 15;317:53-58. doi: 10.1016/j.toxlet.2019.09.017. Epub 2019 Sep 24.


Association of Hyperchloremia With Unfavorable Clinical Outcomes in Adults With Diabetic Ketoacidosis.

Goad NT, Bakhru RN, Pirkle JL, Kenes MT.

J Intensive Care Med. 2019 Jul 25:885066619865469. doi: 10.1177/0885066619865469. [Epub ahead of print]


Development and application of a high throughput one-pot extraction protocol for quantitative LC-MS/MS analysis of phospholipids in serum and lipoprotein fractions in normolipidemic and dyslipidemic subjects.

Gardner MS, Kuklenyik Z, Lehtikoski A, Carter KA, McWilliams LG, Kusovschi J, Bierbaum K, Jones JI, Rees J, Reis G, Pirkle JL, Barr JR.

J Chromatogr B Analyt Technol Biomed Life Sci. 2019 Jun 15;1118-1119:137-147. doi: 10.1016/j.jchromb.2019.04.041. Epub 2019 Apr 22.


Quantification of hypoglycin A and methylenecyclopropylglycine in human plasma by HPLC-MS/MS.

Sanford AA, Isenberg SL, Carter MD, Mojica MA, Mathews TP, Laughlin S, Thomas JD, Pirkle JL, Johnson RC.

J Chromatogr B Analyt Technol Biomed Life Sci. 2018 Sep 15;1095:112-118. doi: 10.1016/j.jchromb.2018.07.017. Epub 2018 Jul 20.


Collaborative Method Performance Study of the Measurement of Nicotine, Its Metabolites, and Total Nicotine Equivalents in Human Urine.

Wang L, Bernert JT, Benowitz NL, Feng J, Jacob P 3rd, McGahee E, Caudill SP, Scherer G, Scherer M, Pluym N, Doig MV, Newland K, Murphy SE, Caron NJ, Sander LC, Shimizu M, Yamazaki H, Kim S, Langman LJ, Pritchett JS, Sniegoski LT, Li Y, Blount BC, Pirkle JL.

Cancer Epidemiol Biomarkers Prev. 2018 Sep;27(9):1083-1090. doi: 10.1158/1055-9965.EPI-17-1127. Epub 2018 May 31.


Quantitative HPLC-MS/MS analysis of toxins in soapberry seeds: Methylenecyclopropylglycine and hypoglycin A.

Sanford AA, Isenberg SL, Carter MD, Mojica MA, Mathews TP, Harden LA, Takeoka GR, Thomas JD, Pirkle JL, Johnson RC.

Food Chem. 2018 Oct 30;264:449-454. doi: 10.1016/j.foodchem.2018.04.093. Epub 2018 May 4.


Core lipid, surface lipid and apolipoprotein composition analysis of lipoprotein particles as a function of particle size in one workflow integrating asymmetric flow field-flow fractionation and liquid chromatography-tandem mass spectrometry.

Kuklenyik Z, Jones JI, Gardner MS, Schieltz DM, Parks BA, Toth CA, Rees JC, Andrews ML, Carter K, Lehtikoski AK, McWilliams LG, Williamson YM, Bierbaum KP, Pirkle JL, Barr JR.

PLoS One. 2018 Apr 10;13(4):e0194797. doi: 10.1371/journal.pone.0194797. eCollection 2018.


An Unexpected Case of Scurvy in a Peritoneal Dialysis Patient.

El Khoury R, Warren M, Ali S, Pirkle JL Jr.

Case Rep Nephrol Dial. 2017 Dec 22;7(3):172-177. doi: 10.1159/000485500. eCollection 2017 Sep-Dec.


Simultaneous Quantification of Free Cholesterol, Cholesteryl Esters, and Triglycerides without Ester Hydrolysis by UHPLC Separation and In-Source Collision Induced Dissociation Coupled MS/MS.

Gardner MS, McWilliams LG, Jones JI, Kuklenyik Z, Pirkle JL, Barr JR.

J Am Soc Mass Spectrom. 2017 Nov;28(11):2319-2329. doi: 10.1007/s13361-017-1756-2. Epub 2017 Aug 11.


Effects of weight-based ultrafiltration rate limits on intradialytic hypotension in hemodialysis.

Pirkle JL Jr, Comeau ME, Langefeld CD, Russell GB, Balderston SS, Freedman BI, Burkart JM.

Hemodial Int. 2018 Apr;22(2):270-278. doi: 10.1111/hdi.12578. Epub 2017 Jun 23.


Plasma trans-fatty acid concentrations in fasting adults declined from NHANES 1999-2000 to 2009-2010.

Vesper HW, Caudill SP, Kuiper HC, Yang Q, Ahluwalia N, Lacher DA, Pirkle JL.

Am J Clin Nutr. 2017 May;105(5):1063-1069. doi: 10.3945/ajcn.116.141622. Epub 2017 Apr 5.


High throughput quantification of apolipoproteins A-I and B-100 by isotope dilution MS targeting fast trypsin releasable peptides without reduction and alkylation.

Parks BA, Schieltz DM, Andrews ML, Gardner MS, Rees JC, Toth CA, Jones JI, McWilliams LG, Kuklenyik Z, Pirkle JL, Barr JR.

Proteomics Clin Appl. 2017 Jul;11(7-8). doi: 10.1002/prca.201600128. Epub 2017 Apr 3.


Association of acute toxic encephalopathy with litchi consumption in an outbreak in Muzaffarpur, India, 2014: a case-control study.

Shrivastava A, Kumar A, Thomas JD, Laserson KF, Bhushan G, Carter MD, Chhabra M, Mittal V, Khare S, Sejvar JJ, Dwivedi M, Isenberg SL, Johnson R, Pirkle JL, Sharer JD, Hall PL, Yadav R, Velayudhan A, Papanna M, Singh P, Somashekar D, Pradhan A, Goel K, Pandey R, Kumar M, Kumar S, Chakrabarti A, Sivaperumal P, Kumar AR, Schier JG, Chang A, Graham LA, Mathews TP, Johnson D, Valentin L, Caldwell KL, Jarrett JM, Harden LA, Takeoka GR, Tong S, Queen K, Paden C, Whitney A, Haberling DL, Singh R, Singh RS, Earhart KC, Dhariwal AC, Chauhan LS, Venkatesh S, Srikantiah P.

Lancet Glob Health. 2017 Apr;5(4):e458-e466. doi: 10.1016/S2214-109X(17)30035-9. Epub 2017 Jan 31.


On-column trypsin digestion coupled with LC-MS/MS for quantification of apolipoproteins.

Toth CA, Kuklenyik Z, Jones JI, Parks BA, Gardner MS, Schieltz DM, Rees JC, Andrews ML, McWilliams LG, Pirkle JL, Barr JR.

J Proteomics. 2017 Jan 6;150:258-267. doi: 10.1016/j.jprot.2016.09.011. Epub 2016 Sep 23.


Quantification of Toxins in Soapberry (Sapindaceae) Arils: Hypoglycin A and Methylenecyclopropylglycine.

Isenberg SL, Carter MD, Hayes SR, Graham LA, Johnson D, Mathews TP, Harden LA, Takeoka GR, Thomas JD, Pirkle JL, Johnson RC.

J Agric Food Chem. 2016 Jul 13;64(27):5607-13. doi: 10.1021/acs.jafc.6b02478. Epub 2016 Jul 1.


Temporal Trends of Secondhand Smoke Exposure: Nonsmoking Workers in the United States (NHANES 2001-2010).

Wei B, Bernert JT, Blount BC, Sosnoff CS, Wang L, Richter P, Pirkle JL.

Environ Health Perspect. 2016 Oct;124(10):1568-1574. Epub 2016 May 10.


Incidence of Hypoglycemia in Patients With Low eGFR Treated With Insulin and Dextrose for Hyperkalemia.

Pierce DA, Russell G, Pirkle JL Jr.

Ann Pharmacother. 2015 Dec;49(12):1322-6. doi: 10.1177/1060028015607559. Epub 2015 Sep 28.


Quantification of metabolites for assessing human exposure to soapberry toxins hypoglycin A and methylenecyclopropylglycine.

Isenberg SL, Carter MD, Graham LA, Mathews TP, Johnson D, Thomas JD, Pirkle JL, Johnson RC.

Chem Res Toxicol. 2015 Sep 21;28(9):1753-9. doi: 10.1021/acs.chemrestox.5b00205. Epub 2015 Sep 2.


Hemoglobin stability and patient compliance with darbepoetin alfa in peritoneal dialysis patients after the implementation of the prospective payment system.

Pirkle JL Jr, Paoli CJ, Russell G, Petersen J, Burkart J.

Clin Ther. 2014 Nov 1;36(11):1665-74. doi: 10.1016/j.clinthera.2014.08.011. Epub 2014 Sep 23.


Urine sodium excretion increased slightly among U.S. adults between 1988 and 2010.

Pfeiffer CM, Hughes JP, Cogswell ME, Burt VL, Lacher DA, Lavoie DJ, Rabinowitz DJ, Johnson CL, Pirkle JL.

J Nutr. 2014 May;144(5):698-705. doi: 10.3945/jn.113.187914. Epub 2014 Mar 12.


Urinary concentrations of environmental phenols in pregnant women in a pilot study of the National Children's Study.

Mortensen ME, Calafat AM, Ye X, Wong LY, Wright DJ, Pirkle JL, Merrill LS, Moye J.

Environ Res. 2014 Feb;129:32-8. doi: 10.1016/j.envres.2013.12.004. Epub 2014 Jan 11.


The CDC's Second National Report on Biochemical Indicators of Diet and Nutrition in the U.S. Population is a valuable tool for researchers and policy makers.

Pfeiffer CM, Sternberg MR, Schleicher RL, Haynes BM, Rybak ME, Pirkle JL.

J Nutr. 2013 Jun;143(6):938S-47S. doi: 10.3945/jn.112.172858. Epub 2013 Apr 17.


Immune complex disease with a lupus-like pattern of deposition in an antinuclear antibody-negative patient.

Pirkle JL, Freedman BI, Fogo AB.

Am J Kidney Dis. 2013 Jul;62(1):159-64. doi: 10.1053/j.ajkd.2013.02.353. Epub 2013 Mar 30. Review.


Hypertension and chronic kidney disease: controversies in pathogenesis and treatment.

Pirkle JL, Freedman BI.

Minerva Urol Nefrol. 2013 Mar;65(1):37-50. Review.


Lactobacillus species can cause a false-positive test for hematuria on dipstick urinalysis.

Pirkle JL, Palavecino EL, Freedman BI.

Am J Med. 2013 Jan;126(1):e3-4. doi: 10.1016/j.amjmed.2012.07.017. Epub 2012 Nov 20. No abstract available.


Improved detection of botulinum neurotoxin serotype A by Endopep-MS through peptide substrate modification.

Wang D, Baudys J, Ye Y, Rees JC, Barr JR, Pirkle JL, Kalb SR.

Anal Biochem. 2013 Jan 15;432(2):115-23. doi: 10.1016/j.ab.2012.09.021. Epub 2012 Sep 24.


Two-dimensional high performance liquid chromatography separation and tandem mass spectrometry detection of atrazine and its metabolic and hydrolysis products in urine.

Kuklenyik Z, Panuwet P, Jayatilaka NK, Pirkle JL, Calafat AM.

J Chromatogr B Analyt Technol Biomed Life Sci. 2012 Jul 15;901:1-8. doi: 10.1016/j.jchromb.2012.05.028. Epub 2012 Jun 2.


Subtyping botulinum neurotoxins by sequential multiple endoproteases in-gel digestion coupled with mass spectrometry.

Wang D, Baudys J, Rees J, Marshall KM, Kalb SR, Parks BA, Nowaczyk L 2nd, Pirkle JL, Barr JR.

Anal Chem. 2012 Jun 5;84(11):4652-8. doi: 10.1021/ac3006439. Epub 2012 May 21.


De novo subtype and strain identification of botulinum neurotoxin type B through toxin proteomics.

Kalb SR, Baudys J, Rees JC, Smith TJ, Smith LA, Helma CH, Hill K, Kull S, Kirchner S, Dorner MB, Dorner BG, Pirkle JL, Barr JR.

Anal Bioanal Chem. 2012 Apr;403(1):215-26. doi: 10.1007/s00216-012-5767-3. Epub 2012 Mar 7.


Levels of plasma trans-fatty acids in non-Hispanic white adults in the United States in 2000 and 2009.

Vesper HW, Kuiper HC, Mirel LB, Johnson CL, Pirkle JL.

JAMA. 2012 Feb 8;307(6):562-3. doi: 10.1001/jama.2012.112. No abstract available.


Simultaneous quantification of hemagglutinin and neuraminidase of influenza virus using isotope dilution mass spectrometry.

Williams TL, Pirkle JL, Barr JR.

Vaccine. 2012 Mar 23;30(14):2475-82. doi: 10.1016/j.vaccine.2011.12.056. Epub 2011 Dec 22.


Discovery of a novel enzymatic cleavage site for botulinum neurotoxin F5.

Kalb SR, Baudys J, Webb RP, Wright P, Smith TJ, Smith LA, Fernández R, Raphael BH, Maslanka SE, Pirkle JL, Barr JR.

FEBS Lett. 2012 Jan 20;586(2):109-15. doi: 10.1016/j.febslet.2011.11.033. Epub 2011 Dec 9.


Extraction and inhibition of enzymatic activity of botulinum neurotoxins /B1, /B2, /B3, /B4, and /B5 by a panel of monoclonal anti-BoNT/B antibodies.

Kalb SR, Santana WI, Geren IN, Garcia-Rodriguez C, Lou J, Smith TJ, Marks JD, Smith LA, Pirkle JL, Barr JR.

BMC Biochem. 2011 Nov 15;12:58. doi: 10.1186/1471-2091-12-58.


Quantification of botulinum neurotoxin serotypes A and B from serum using mass spectrometry.

Parks BA, Shearer JD, Baudys J, Kalb SR, Sanford DC, Pirkle JL, Barr JR.

Anal Chem. 2011 Dec 1;83(23):9047-53. doi: 10.1021/ac201910q. Epub 2011 Nov 4.


Quantification of immunoreactive viral influenza proteins by immunoaffinity capture and isotope-dilution liquid chromatography-tandem mass spectrometry.

Pierce CL, Williams TL, Moura H, Pirkle JL, Cox NJ, Stevens J, Donis RO, Barr JR.

Anal Chem. 2011 Jun 15;83(12):4729-37. doi: 10.1021/ac2006526. Epub 2011 May 26.


Detection and quantification of ricin in beverages using isotope dilution tandem mass spectrometry.

McGrath SC, Schieltz DM, McWilliams LG, Pirkle JL, Barr JR.

Anal Chem. 2011 Apr 15;83(8):2897-905. doi: 10.1021/ac102571f. Epub 2011 Mar 23.


Comparison of MALDI-TOF-MS and HPLC-ESI-MS/MS for endopeptidase activity-based quantification of Anthrax lethal factor in serum.

Kuklenyik Z, Boyer AE, Lins R, Quinn CP, Gallegos-Candela M, Woolfitt A, Pirkle JL, Barr JR.

Anal Chem. 2011 Mar 1;83(5):1760-5. doi: 10.1021/ac1030144. Epub 2011 Feb 8.


Analysis of active ricin and castor bean proteins in a ricin preparation, castor bean extract, and surface swabs from a public health investigation.

Schieltz DM, McGrath SC, McWilliams LG, Rees J, Bowen MD, Kools JJ, Dauphin LA, Gomez-Saladin E, Newton BN, Stang HL, Vick MJ, Thomas J, Pirkle JL, Barr JR.

Forensic Sci Int. 2011 Jun 15;209(1-3):70-9. doi: 10.1016/j.forsciint.2010.12.013. Epub 2011 Jan 19.


Studies on botulinum neurotoxins type /C1 and mosaic/DC using Endopep-MS and proteomics.

Moura H, Terilli RR, Woolfitt AR, Gallegos-Candela M, McWilliams LG, Solano MI, Pirkle JL, Barr JR.

FEMS Immunol Med Microbiol. 2011 Apr;61(3):288-300. doi: 10.1111/j.1574-695X.2010.00774.x. Epub 2011 Jan 26.


Different substrate recognition requirements for cleavage of synaptobrevin-2 by Clostridium baratii and Clostridium botulinum type F neurotoxins.

Kalb SR, Baudys J, Egan C, Smith TJ, Smith LA, Pirkle JL, Barr JR.

Appl Environ Microbiol. 2011 Feb;77(4):1301-8. doi: 10.1128/AEM.01662-10. Epub 2010 Dec 17.


Tobacco-specific nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) in smokers in the United States: NHANES 2007-2008.

Xia Y, Bernert JT, Jain RB, Ashley DL, Pirkle JL.

Biomarkers. 2011 Mar;16(2):112-9. doi: 10.3109/1354750X.2010.533288. Epub 2010 Nov 29.


Urine concentrations of a tobacco-specific nitrosamine carcinogen in the U.S. population from secondhand smoke exposure.

Bernert JT, Pirkle JL, Xia Y, Jain RB, Ashley DL, Sampson EJ.

Cancer Epidemiol Biomarkers Prev. 2010 Nov;19(11):2969-77. doi: 10.1158/1055-9965.EPI-10-0711. Epub 2010 Sep 10.


Extraction of BoNT/A, /B, /E, and /F with a single, high affinity monoclonal antibody for detection of botulinum neurotoxin by Endopep-MS.

Kalb SR, Garcia-Rodriguez C, Lou J, Baudys J, Smith TJ, Marks JD, Smith LA, Pirkle JL, Barr JR.

PLoS One. 2010 Aug 17;5(8):e12237. doi: 10.1371/journal.pone.0012237.


Mass spectrometric analysis of multiple pertussis toxins and toxoids.

Williamson YM, Moura H, Schieltz D, Rees J, Woolfitt AR, Pirkle JL, Sampson JS, Tondella ML, Ades E, Carlone G, Barr JR.

J Biomed Biotechnol. 2010;2010:942365. doi: 10.1155/2010/942365. Epub 2010 May 23.


On-line coupling of anion exchange and ion-pair chromatography for measurement of intracellular triphosphate metabolites of reverse transcriptase inhibitors.

Kuklenyik Z, Martin A, Pau CP, Holder A, Youngpairoj AS, Zheng Q, Cong ME, Garcia-Lerma JG, Heneine W, Pirkle JL, Barr JR.

J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Nov 1;877(29):3659-66. doi: 10.1016/j.jchromb.2009.09.007. Epub 2009 Sep 11.


Kinetics of lethal factor and poly-D-glutamic acid antigenemia during inhalation anthrax in rhesus macaques.

Boyer AE, Quinn CP, Hoffmaster AR, Kozel TR, Saile E, Marston CK, Percival A, Plikaytis BD, Woolfitt AR, Gallegos M, Sabourin P, McWilliams LG, Pirkle JL, Barr JR.

Infect Immun. 2009 Aug;77(8):3432-41. doi: 10.1128/IAI.00346-09. Epub 2009 Jun 8.


Optimization of digestion parameters for protein quantification.

Norrgran J, Williams TL, Woolfitt AR, Solano MI, Pirkle JL, Barr JR.

Anal Biochem. 2009 Oct 1;393(1):48-55. doi: 10.1016/j.ab.2009.05.050. Epub 2009 Jun 6.


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