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Search Publications by: Clay Davis (Fed)

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Displaying 1 - 25 of 47

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

September 18, 2023
Author(s)
Debra Ellisor, Amanda Bayless, Clay Davis, Tracey Schock, 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 L. Bayless, Sandra M. Da Silva, Clay Davis, Abraham Kuri Cruz, Tracey Schock, 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

The Influence of Proteoforms: Assessing the Accuracy of Total VDBP Quantification by Proteolysis and LC-MS/MS

October 24, 2022
Author(s)
Lisa Kilpatrick, Roger Bouillon, Clay Davis, Clark Henderson, Andrew N. Hoofnagle, Steven Pauwels, Dirk Vanderschueren, Etienne Waelkens, Hans Wildiers, James H. Yen, Karen W. Phinney
Objectives: Vitamin D-binding protein (VDBP), a serum transport protein for 25-hydroxyvitamin D [25(OH)D], has three common proteoforms which have co-localized amino acid variations and glycosylation. A monoclonal immunoassay was found to differentially

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 Schock, 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

Development of a kelp powder (Thallus laminariae) Standard Reference Material

December 9, 2017
Author(s)
Lee L. Yu, Joseph Browning, Carolyn Q. Burdette, George C. Caceres, Kaitlyn Chieh, William C. Davis, MIchael Ellisor, Brittany Kassim, Stephen E. Long, Karen E. Murphy, Rabia Oflaz, Rick L. Paul, Katherine E. Sharpless, Laura J. Wood, James H. Yen, Rolf L. Zeisler
A Standard Reference Material (SRM) of seaweed, SRM 3232 Kelp Powder (Thallus laminariae) has been developed to support food and dietary supplement measurements in compliance with the Food Safety Modernization Act (FSMA) and the Dietary Supplement Health

Selenium protein identification and profiling by mass spectrometry: A tool to assess progression of cardiomyopathy in a whale model

December 1, 2017
Author(s)
Colleen E. Bryan Sallee, Steven J. Christopher, William C. Davis, Lisa E. Kilpatrick, Gregory D. Bossart, Wayne E. McFee, Terrance X. O'Brien
Non-ischemic cardiomyopathy is a leading cause of congestive heart failure and sudden cardiac death in humans and in some cases the etiology of cardiomyopathy can include the downstream effects of an essential element deficiency. Of all mammal species

High Levels of Gadolinium Deposition in the Skin of a Patient with Normal Renal Function

May 2, 2016
Author(s)
William C. Davis, Donna R. Roberts, Scott M. Lindhorst, Cynthia T. Welsh, Mary N. Herring, Adam Braun, Bruce H. Thiers
Objective: The aim of this study was to assess gadolinium deposition in the skin of a patient with normal renal function, based on estimated glomerular filtration rate (eGFR) values greater than 59 ml/min/1.73 m2, following exposure to large cumulative

Effect of Impurities on Water Triple Point Cells

July 15, 2014
Author(s)
A Peruzzi, J. van Geel, A. Uytun, M. Kalemci, E. Uysal, Gregory F. Strouse, Yoana Y. Nuevo Ordonez, William Davis
Water triple point cells are the basis for the definition of the Kelvin and for the realization of the International Temperature Scale of 1990. The temperature differences between the cells are mainly caused by impurities arising in the cell water from the

Certification of Total Arsenic in Blood and Urine Standard Reference Materials by Radiochemical Neutron Activation Analysis and Inductively Coupled Plasma Mass Spectrometry

March 1, 2014
Author(s)
Rick L. Paul, William C. Davis, Karen E. Murphy, Colleen E. Bryan Sallee, Lee L. Yu, William F. Guthrie, Dennis D. Leber, Thomas W. Vetter
A newly developed procedure for determination of arsenic by radiochemical neutron activation analysis was used to measure arsenic in SRM 955c Toxic Elements in Caprine Blood and SRM 2668 Toxic Elements in Frozen Human Urine for the purpose of providing

Quantification of total serum transferrin and transferrin sialoforms in human serum; an alternative method for the determination of carbohydrate-deficient transferrin in clinical samples

January 20, 2014
Author(s)
Yoana Y. Nuevo Ordonez, William C. Davis, Raymond F. Anton
Carbohydrate deficient transferrin (CDT) measurements in human serum constitute the most specific marker for chronic heavy alcohol use and congenital disorders of glycosylation in proteins. Therefore, the development of precise and accurate analytical

Development of a Standard Reference Material for Metabolomics Research

November 4, 2013
Author(s)
Karen W. Phinney, Guillaume Ballihaut, Mary Bedner, Johanna Camara, Steven J. Christopher, William C. Davis, Nathan G. Dodder, Brian E. Lang, Stephen E. Long, Mark S. Lowenthal, Elizabeth A. McGaw, Karen E. Murphy, Bryant C. Nelson, Jocelyn L. Prendergast, Jessica L. Reiner, Catherine A. Rimmer, Lane C. Sander, Michele M. Schantz, Katherine E. Sharpless, Lorna T. Sniegoski, Susan S. Tai, Jeanice M. Brown Thomas, Thomas W. Vetter, Michael J. Welch, Stephen A. Wise, Laura J. Wood, William F. Guthrie, Robert C. Hagwood, Stefan D. Leigh, James H. Yen, Nien F. Zhang, Madhu Chaurhary-Webb, Huiping Chen, Bridgette Haynes, Donna J. LaVoie, Leslie F. McCoy, Shahzad S. Momin, Neelima Paladugula, Elizabeth C. Pendergrast, Christine M. Pfeiffer, Carissa D. Powers, Zia Fazili-Qari, Daniel Rabinowitz, Michael E. Rybak, Rosemary L. Schleicher, Mary Xu, Mindy Zhang, Arthur L. Castle, Brandi S. Benford, Gauthier Eppe

Characterization of Perchlorate in a New Frozen Human Urine Standard Reference Material

October 1, 2012
Author(s)
Lee L. Yu, William C. Davis, Rabia Oflaz, Gregory C. Turk, Jeff M. Jarrett, Liza Valentin, Benjamin C. Blount, Dennis D. Leber, Eric L. Kilpatrick
Perchlorate, an inorganic anion, has recently been recognized as an environmental contaminant by the U.S. Environmental Protection Agency (EPA). Assessment of human exposure to perchlorate requires measurement of the anion in urine. Although the

Influence of mercury and selenium chemistries on the progression of cardiomyopathy in pygmy sperm whales, Kogia breviceps

October 1, 2012
Author(s)
Colleen E. Bryan Sallee, William C. Davis, Wayne E. McFee, Carola A. Neumann, Jennifer Schulte, Gregory D. Bossart, Steven J. Christopher
More than half of pygmy sperm whales (Kogia breviceps) that strand exhibit signs of cardiomyopathy (CMP). Many factors may contribute to the development of idiopathic CMP in K. breviceps, including genetics, infectious agents, contaminants, biotoxins, and

EVALUATION OF A MICROWAVE-ASSISTED METAL-LABELING STRATEGY FOR QUANTIFICATION OF PEPTIDES VIA RPLC-ICP-MS AND THE METHOD OF STANDARD ADDITIONS

November 26, 2011
Author(s)
Steven J. Christopher, Eric L. Kilpatrick, Lee L. Yu, William C. Davis, blakely adair
NIST has performed preliminary research on applying a calibration methodology based on the method of standard additions to the quantification of lanthanide-labeled peptides via reverse-phase liquid chromatography coupled to inductively coupled plasma mass

A Human Urine Standard Reference Materials for Accurate Assessment of Arsenic Exposure

March 17, 2011
Author(s)
Lee L. Yu, Carl Verdon, William C. Davis, Gregory C. Turk, Kathleen Caldwell, Robert Jones, Brian Buckley, Ruimin Xie
Arsenic is a toxic element, and the toxicity of the element is dependent upon the molecular form it is in. Accurate assessments of arsenic exposure require the measurement of a complete panel of inorganic, organic, and metabolite As species in urine