NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Tracey Schock (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 1 - 25 of 35

Securing the Future of NMR Metabolomics Reproducibility: A Call for Standardized Reporting

September 15, 2025
Author(s)
Tracey Johnston, Fabio Casu, Amanda Bayless, Erik Andersson, Robert Brua, Munki Choo, Arthur S. Edison, Hamid R. Eghbalnia, Candace Fleischer, Goncalo J Gouveia, Jeffrey C. Hoch, Gagandeep Kaur, Da-Wei Li, Wimal Pathmasiri, Istvan Pelczer, Fay Probert, Daniel Raftery, David Rovnyak, Michael Secreto, Panteleimon Takis, Mario Uchimiya, David S Wishart, Ali Yilmaz, Lloyd Sumner, Robert Powers, Valerie Copie, Teklab Gebregiworgis
Metabolomics has been a rapidly growing multidisciplinary field with ever increasing demand and usability, attracting a surge of new researchers. While their varied skill sets, questions, and approaches enrich the field with fresh perspectives and

Concordant inter-laboratory derived concentrations of ceramides in human plasma reference materials via authentic standards

October 3, 2024
Author(s)
Tracey Schock, Christina Jones, Federico Torta, Nils Hoffmann, Bo Burla, Irina Alecu, Makoto Arita, Takeshi Bamba, Steffany A.L. Bennett, Justine BERTRAND-MICHEL, Britta Brugger, Monica Molina, Maria Dolores Camacho Munoz, Antonio Checa, Michael Chen, Michelle Cinel, Benoit COLSCH, Cristina Coman, Bebiana Da Costa Sousa, Alex Dickens, Maria Maria, Finnur Freyr Eiriksson, Hector Gallart-Ayala, Mohan Ghorasaini, Martin Giera, Xue Guan, Mark Haid, Thomas Hankemeier, Amy Harms, Marcus Horing, Michal Holcapek, Thorsten Hornemann, Chunxiu Hu, Andreas Hulsmeier, Julijana Ivanisevic, Harald Kofeler, Sin Man Lam, Jong Cheol Lee, Gerhard Liebisch, Andrea F Lopez-Clavijo, Malena Manzi, Peter Meikle, Maria Monge, Sneha Muralidharan, Anna Nicolaou, Valerie O'Donnell, Matej Oresic, Arvind Ramanathan, Daisuke Saigusa, Heidi Schwartz-Zimmermann, Guanghou Shui, Masatomo Takahashi, Margret Thorsteinsdottir, Anthony Tournadre, Hiroshi Tsugawa, Victoria Tyrrell, Grace van der Gugten, Michael Wakelam, Craig Wheelock, Denise Wolrab, Guowang Xu, John Bowden, Kim Ekroos, Robert Ahrends, Markus Wenk
In this community effort, we compared measurements between 34 laboratories from 19 countries, utilizing mixtures of authentic synthetic standards, to quantify by mass spectrometry four ceramide species in the NIST human blood plasma Standard Reference

Metabolomics 2023 Workshop Report: Moving Toward Consensus on Best QA/QC Practices in LC-MS-Based Untargeted Metabolomics

July 9, 2024
Author(s)
Tracey Schock, Jonathan Mosley, Warwick Dunn, Julia Kuligowski, Matthew Lewis, Maria Monge, Candice Ulmer Holland, Dajana Vuckovic, Krista Zanetti
Introduction: During the Metabolomics 2023 conference, the Metabolomics Quality Assurance and Quality Control Consortium (mQACC) presented a workshop focusing on key quality assurance and quality control (QA/QC) topic categories for LC-MS-based untargeted

Perspective: use and reuse of NMR-based metabolomics data: what works and what remains challenging

March 13, 2024
Author(s)
Tracey Schock, Goncalo Gouveia, Thomas Head, Leo L. Cheng, Chaevian Clendinen, John Cort, Xiuxia Du, Edison Arthur, Candace Fleischer, Jeffrey C. Hoch, Nathaniel Mercaldo, Wimal Pathmasiri, Daniel Raftery, Lloyd Sumner, Panteleimon Takis, Valerie Copie, Hamid R. Eghbalnia, Robert Powers
The National Cancer Institute (NCI) issued a Request for Information (RFI) in October 2022, soliciting input on using and reusing metabolomics data. This RFI aimed to seek input on best practices for metabolomics data storage, management, and use/reuse. In

Establishing a framework for best practices for quality assurance and quality control in untargeted metabolomics

February 12, 2024
Author(s)
Tracey Schock, Jonathan Mosley, Chris Beecher, Warwick Dunn, Julia Kuligowski, Matthew Lewis, Georgios Theodoridis, Candice Ulmer, Dajana Vuckovic, Ian Wilson, Krista Zanetti
Background: Quality assurance (QA) and quality control (QC) practices are key tenets that facilitate study and data quality across all applications of untargeted metabolomics. Such important practices will strengthen this field and accelerate its success

Best practices in NMR metabolomics: Current state

December 12, 2023
Author(s)
Tracey Schock, Amanda Bayless, Goncalo Gouveia, Robert Powers, Valerie Copie, John Cort, Hamid R. Eghbalnia, Wimal Pathmasiri, David S Wishart, Erik Andersson, Robert Brua, Leo Cheng, Chaevien Clendinen, Darcy Cochran, Alexandra Crook, Michah Jeppesen, Amith Maroli, Matthew Merritt, Heidi Roth, Isin Sakallioglu, Saurav Sarma, Lloyd Sumner, Panteleimon Takis, Mario Uchimiya
A literature survey was conducted to identify current practices used by NMR metabolomics investigators. A total of 463 papers from 2020 and 80 papers from 2010 were selected from PubMed. The papers were manually analyzed by a team of investigators to

Untargeted metabolomics analyses and contaminant chemistry of Dreissenid mussels at the Maumee River Area of Concern in the Great Lakes

November 22, 2023
Author(s)
Tracey Schock, Daniel Bearden, Fabio Casu, Michael Edwards, Annie Jacob, Edward Johnson, Amanda Bayless, Elena Legrand
Bivalves stand out as an ideal ecological indicator and have been the basis of NOAA's Mussel Watch Program to monitor environmental health. In this study, we aimed to investigate the health of the Dreissenid mussel in the Maumee River. In addition to the

Metabolomics 2022 Workshop Report: State of QA/QC Best Practices in LC-MS-Based Untargeted Metabolomics, Informed Through mQACC Community Engagement Initiatives

November 8, 2023
Author(s)
Tracey Schock, Warwick Dunn, Julia Kuligowski, Jonathan Mosley, Candice Ulmer Holland, Dajana Vuckovic
Introduction: The Metabolomics Quality Assurance and Quality Control Consortium (mQACC) organized a workshop during the Metabolomics 2022 conference. Objectives: The goal of the workshop was to disseminate recent findings from mQACC community-engagement

Multi-omics characterization of NIST seafood reference materials and alternative matrix preparations

September 18, 2023
Author(s)
Debra Ellisor, Amanda Bayless, William Davis, Tracey Johnston, Benjamin Trey Knott, John Seghers, Hanne Leys, Hakan Emteborg
The National Institute of Standards and Technology (NIST) has prepared four seafood reference materials (RMs) for use in food safety and nutrition studies: wild-caught and aquacultured salmon (RM 8256 and RM 8257) and wild-caught and aquacultured shrimp

Multi'omic Characterization of Human Whole Stool RGTMs

September 8, 2023
Author(s)
Amanda Bayless, Sandra Da Silva, William Davis, Abraham Kuri Cruz, Tracey Johnston, Stephanie Servetas, Paulina Piotrowski
The gut microbiome plays a critical role in a vast and disparate set of health and disease states, including cancer and obesity. Human fecal is a complex mixture including microbes, proteins, undigested plant matter and fat content according to the diet

NMR and Metabolomics -A Roadmap for the Future

July 23, 2022
Author(s)
Tracey Johnston, David Wishart, Leo Cheng, Valerie Copie, Arthur Edison, Hamid Eghbalnia, Jeffrey Hoch, Goncalo Gouveia, Wimal Pathmasiri, Robert Powers, Llyod Sumner, Mario Uchimiya
Metabolomics investigates global metabolic alterations associated with chemical, biological, physiological, or pathological processes. These metabolic changes are measured with various analytical platforms. While liquid chromatography-mass spectrometry (LC

Reference Materials for MS-based Untargeted Metabolomics and Lipidomics: A Review by the Metabolomics Quality Assurance and Quality Control Consortium (mQACC)

April 9, 2022
Author(s)
Katrice Lippa, William Davis, Christina Jones, Tracey Johnston, Juan Aristizabal-Henao, Richard Beger, John Bowden, Corey Broeckling, Chris Beecher, Warwick Dunn, Roberto Flores, Goncalo Gouveia, Thomas Hartung, Matthew Lewis, Ioanna Ntai, Andrew Percy, Dan Raftery, Jinchun Sun, Georgios Theodoridis, Fariba Tayyari, Federico Torta, Candice Ulmer, Baljit Ubhi
Introduction The metabolomics quality assurance and quality control consortium (mQACC) is enabling the identification, development, prioritization and promotion of suitable reference materials (RMs) to be used in quality assurance (QA) and quality control

Understanding molt control switches: Transcriptomic and expression analysis of the genes involved in ecdysteroidogenesis and cholesterol uptake pathways in the Y-organ of the blue crab, Callinectes sapidus

September 3, 2021
Author(s)
Tracey Johnston, Elena Legrand, J. Sook Chung, Tsvetan Bachvaroff
The crustacean molting process is regulated by an interplay of hormones produced by the eyestalk ganglia and Y-organs (YO). Molt-inhibiting hormone and crustacean hyperglycemic hormone released by the sinus gland of the eyestalk ganglia (EG) inhibit the

Evaluation of Graded Levels of Soy Oil as a Fish Oil Replacement in High Soy Protein Feeds for Juvenile Red Drum, Sciaenops ocellatus

June 30, 2020
Author(s)
Tracey B. Schock, Aaron Watson, Michael P. Napolitano, John A. Bowden, Jason Frost, Justin Yost, Michael R. Denson
A 9-week feeding trial was conducted with juvenile red drum, Sciaenops ocellatus, to evaluate the use of soy oil as a fish oil replacement. Three primary protein sources (fishmeal - FM, soybean meal - SBM, and soy protein concentrate - SPC) were utilized

Remote blubber sampling paired with liquid chromatography tandem mass spectrometry for steroidal endocrinology in free-ranging bottlenose dolphins (Tursiops truncatus)

June 11, 2019
Author(s)
Ashley S. Boggs-Russell, Jared M. Ragland, Eric Zolman, Tracey B. Schock, Jeanine S. Morey, Thomas M. Galligan, Greta Dalle Luche, Brian C. Balmer, Randall S. Wells, John R. Kucklick, Lori Schwacke
Liquid chromatography tandem mass spectrometry allows for the measurement of steroid hormone suites in the blubber of marine mammals. By combining this technology with minimally invasive techniques such as remote biopsy, endocrine profiles can be assessed

Examining American Alligators as Sentinels of Toxic Trace Element Exposure in Human Populations

April 15, 2019
Author(s)
Frances Nilsen, Thomas Rainwater, Stephen E. Long, Tracey Johnston, Philip Wilkinson, Arnold Brunell, Brittany Kassim, John A. Bowden
Mercury (Hg) is a ubiquitous toxic element eliciting a myriad of health problems including Minamata disease. Exposure to methylmercury, the most toxic bioaccumulative form of Hg, occurs through aquatic dietary sources. Many nations have consumption

Examining Heat Treatment for Stabilization of the Lipidome

February 16, 2018
Author(s)
John Bowden, Candice Z. Ulmer, Christina Jones, Tracey Johnston, Jeremy P. Koelmel, Timothy J. Garrett, Richard A. Yost
Aim: To confidently determine lipid-based biomarkers, it is important to minimize variation introduced during preanalytical steps. We evaluated reducing variation associated with lipid measurements in invertebrate sentinel species using a state-of-the-art

Trichothiazole A, a dichlorinated polyketide featuring an embedded thiazole isolated from Trichodesmium thiebautii blooms

September 18, 2017
Author(s)
Tracey B. Schock, Peter D. Moeller, Rick Belisle, Christopher W. Via, Tracy A. Villareal, Kevin Beauchesne, Matthew J. Bertin, Paul Zimba
Mass spectrometry-guided isolation of the lipophilic extract of Trichodesmium thiebautii bloom material led to the isolation and structure characterization of a new thiazole-containing di-chlorinated polyketide (1). The structure of 1 was deduced using 1D
Was this page helpful?