Publications by authors named "Rudolph Johnson"

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Method for detection of naturally occurring toxins in human urine using liquid chromatography-high-resolution mass spectrometry.
Bryan E Hettick, Anisha Saddy, Logan C Krajewski, Rudolph C Johnson, Elizabeth I Hamelin

J Anal Toxicol· January 2025

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Measurement of Microcystin Activity in Human Plasma Using Immunocapture and Protein Phosphatase Inhibition Assay.
Brady R Cunningham, Rebekah E Wharton, Christine Lee, Mike A Mojica, Logan C Krajewski, Rudolph C Johnson

Toxins (Basel)· November 2022

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Detection of Brevetoxin in Human Plasma by ELISA.
Brady R Cunningham, Rebecca M Coleman, Adam M Schaefer, Elizabeth I Hamelin, Rudolph C Johnson

J Anal Toxicol· March 2022

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A cluster of tetrodotoxin poisoning in Oman.
Badria Alhatali, Sultan Al Lawatia, Faryal Khamis, Sandeep Kantur, Seif Al-Abri, Rudolph Johnson

Clin Toxicol (Phila)· February 2022

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Use of Diagnostic Ions for the Detection of Fentanyl Analogs in Human Matrices by LC-QTOF.
Kenneth D Swanson, Rebecca L Shaner, Logan C Krajewski, William A Bragg, Rudolph C Johnson

J Am Soc Mass Spectrom· December 2021

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Development of a clinical assay to measure chlorinated tyrosine in hair and tissue samples using a mouse chlorine inhalation exposure model.
Brooke G Pantazides, Brian S Crow, Jennifer Quiñones-González, Jonas W Perez, Jill A Harvilchuck, Rudolph C Johnson

Anal Bioanal Chem· March 2021

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Detection of 30 Fentanyl Analogs by Commercial Immunoassay Kits.
Rebekah E Wharton, Jerry Casbohm, Ryan Hoffmaster, Bobby N Brewer, M G Finn, Rudolph C Johnson

J Anal Toxicol· February 2021

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Massive fatal overdose of abrin with progressive encephalopathy.
B Zane Horowitz, Rachel Castelli, Adrienne Hughes, Robert G Hendrickson, Rudolph C Johnson

Clin Toxicol (Phila)· May 2020

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Application of the fentanyl analog screening kit toward the identification of emerging synthetic opioids in human plasma and urine by LC-QTOF.
Logan C Krajewski, Kenneth D Swanson, William A Bragg, Rebecca L Shaner, Craig Seymour, Rudolph C Johnson

Toxicol Lett· March 2020

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The Effects of Gamma Irradiation on Chemical Biomarker Recovery from Mixed Chemical/Biological Threat Exposure Specimens.
Samantha L Isenberg, Melissa D Carter, Jonathan L Moon, Sarah Laughlin, Marla Petway, Rudolph C Johnson

J Appl Lab Med· March 2020

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Designing traceable opioid material kits to improve laboratory testing during the U.S. opioid overdose crisis.
Mike A Mojica, Melissa D Carter, Samantha L Isenberg, James L Pirkle, Elizabeth I Hamelin, Rudolph C Johnson

Toxicol Lett· December 2019

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Measurement of Microcystin and Nodularin Activity in Human Urine by Immunocapture-Protein Phosphatase 2A Assay.
Rebekah E Wharton, Brady R Cunningham, Adam M Schaefer, Sophia M Guldberg, Elizabeth I Hamelin, Rudolph C Johnson

Toxins (Basel)· December 2019

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A quantitative method to detect human exposure to sulfur and nitrogen mustards via protein adducts.
Brooke G Pantazides, Jennifer Quiñones-González, Danisha M Rivera Nazario, Brian S Crow, Jonas W Perez, Rudolph C Johnson

J Chromatogr B Analyt Technol Biomed Life Sci· July 2019

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Determination of Fentanyl Analog Exposure Using Dried Blood Spots with LC-MS-MS.
Craig Seymour, Rebecca L Shaner, Melanie C Feyereisen, Rebekah E Wharton, Pearl Kaplan, Rudolph C Johnson

J Anal Toxicol· May 2019

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Rapid quantification of two chemical nerve agent metabolites in serum.
Michael Kammer, Amanda Kussrow, Melissa D Carter, Samantha L Isenberg, Rudolph C Johnson

Biosens Bioelectron· April 2019

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Nerve Agent Incidents and Public Health Preparedness.
Arthur Chang, Jerry Thomas, Rudolph Johnson, Susan E Gorman, Josh Schier

Ann Intern Med· January 2019

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Quantification of Ricinine and Abrine in Human Plasma by HPLC-MS-MS: Biomarkers of Exposure to Ricin and Abrin.
Samantha L Isenberg, Melissa D Carter, Michael A Miller, Aleksandra I Noras, Mike A Mojica, Rudolph C Johnson

J Anal Toxicol· November 2018

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Investigation of dried blood sampling with liquid chromatography tandem mass spectrometry to confirm human exposure to nerve agents.
Rebecca L Shaner, Rebecca M Coleman, Nicholas Schulze, Kelsey Platanitis, Ashli A Brown, Rudolph C Johnson

Anal Chim Acta· November 2018

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Quantitative HPLC-MS/MS analysis of toxins in soapberry seeds: Methylenecyclopropylglycine and hypoglycin A.
Aimee A Sanford, Samantha L Isenberg, Melissa D Carter, Mike A Mojica, Thomas P Mathews, Rudolph C Johnson

Food Chem· October 2018

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Structural Characterization and Absolute Quantification of Microcystin Peptides Using Collision-Induced and Ultraviolet Photo-Dissociation Tandem Mass Spectrometry.
Troy J Attard, Melissa D Carter, Mengxuan Fang, Rudolph C Johnson, Gavin E Reid

J Am Soc Mass Spectrom· September 2018

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Quantification of hypoglycin A and methylenecyclopropylglycine in human plasma by HPLC-MS/MS.
Aimee A Sanford, Samantha L Isenberg, Melissa D Carter, Mike A Mojica, Thomas P Mathews, Rudolph C Johnson

J Chromatogr B Analyt Technol Biomed Life Sci· September 2018

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Detection of α-, β-, and γ-amanitin in urine by LC-MS/MS using N-α-amanitin as the internal standard.
Nicole L Abbott, Kasey L Hill, Alaine Garrett, Melissa D Carter, Elizabeth I Hamelin, Rudolph C Johnson

Toxicon· September 2018

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Quantification of Microcystin-LR in Human Urine by Immunocapture Liquid Chromatography Tandem Mass Spectrometry.
Rebekah E Wharton, Geovannie Ojeda-Torres, Brady Cunningham, Melanie C Feyereisen, Kasey L Hill, Rudolph C Johnson

Chem Res Toxicol· September 2018

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Mass Spectral Detection of Diethoxyphospho-Tyrosine Adducts on Proteins from HEK293 Cells Using Monoclonal Antibody depY for Enrichment.
Seda Onder, Lawrence M Schopfer, Ozden Tacal, Thomas A Blake, Rudolph C Johnson

Chem Res Toxicol· June 2018

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Quantitation of saxitoxin in human urine using immunocapture extraction and LC-MS.
William A Bragg, Alaine Garrett, Elizabeth I Hamelin, Rebecca M Coleman, Katrina Campbell, Rudolph C Johnson

Bioanalysis· February 2018

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