4 research outputs found
The PeptideAtlas of the Domestic Laying Hen
Proteomics-based biological research
is greatly expanded by high-quality
mass spectrometry studies, which are themselves enabled by access
to quality mass spectrometry resources, such as high-quality curated
proteome data repositories. We present a PeptideAtlas for the domestic
chicken, containing an extensive and robust collection of chicken
tissue and plasma samples with substantial value for the chicken proteomics
community for protein validation and design of downstream targeted
proteome quantitation. The chicken PeptideAtlas contains 6646 canonical
proteins at a protein FDR of 1.3%, derived from ∼100 000
peptides at a peptide level FDR of 0.1%. The rich collection of readily
accessible data is easily mined for the purposes of data validation
and experimental planning, particularly in the realm of developing
proteome quantitation workflows. Herein we demonstrate the use of
the atlas to mine information on common chicken acute-phase proteins
and biomarkers for cancer detection research, as well as their localization
and polymorphisms. This wealth of information will support future
proteome-based research using this highly important agricultural organism
in pursuit of both chicken and human health outcomes
Annotating and Visualizing a Database of Analytical Methods
Presentation for SERMACS on October 25-28, 2023 in Durham, NCScience Inventory, CCTE products: https://cfpub.epa.gov/si/si_public_search_results.cfm?advSearch=true&showCriteria=2&keyword=CCTE&TIMSType=&TIMSSubTypeID=&epaNumber=&ombCat=Any&dateBeginPublishedPresented=07/01/2017&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&DEID=&personName=&personID=&role=Any&journalName=&journalID=&publisherName=&publisherID=&sortBy=pubDate&count=25</p
Estimation of the Half-Lives of Recently Detected Per- and Polyfluorinated Alkyl Ethers in an Exposed Community
To estimate half-lives for novel fluoroethers, the GenX
Exposure
Study obtained two serum measurements for per- and polyfluoroalkyl
substances (PFAS) for 44 participants of age 12–86 years from
North Carolina, collected 5 and 11 months after fluoroether discharges
into the drinking water source were controlled. The estimated half-lives
for these compounds were 127 days (95% confidence interval (95% CI)
= 86, 243 days) for perfluorotetraoxadecanoic acid (PFO4DA), 296 days
for Nafion byproduct 2 (95% CI = 176, 924 days), and 379 days (95%
CI = 199, 3870 days) for perfluoro-3,5,7,9,11-pentaoxadodecanoic acid
(PFO5DoA). Using these estimates and the literature values, a model
was built that predicted PFAS half-lives using structural properties.
Three chemical properties predicted 55% of the variance of PFAS half-lives
based on 15 PFAS. A model with only molecular weight predicted 69%
of the variance. Some properties can predict the half-lives of PFAS,
but a deeper understanding is needed. These fluoroethers had biological
half-lives longer than published half-lives for PFHxA and PFHpA (30–60
days) but shorter than those for PFOA and PFOS (800–1200 days).
These are the first and possibly only estimates of human elimination
half-lives of these fluoroethers
Enabling State Adoption of Non-Targeted Analysis (NTA) to Address Pressing Public Health Needs: Maryland, Minnesota, and California Leading the Way
Poster for SETAC on Nov. 12-16, 2023 in Louisville, KYScience Inventory, CCTE products: https://cfpub.epa.gov/si/si_public_search_results.cfm?advSearch=true&showCriteria=2&keyword=CCTE&TIMSType=&TIMSSubTypeID=&epaNumber=&ombCat=Any&dateBeginPublishedPresented=07/01/2017&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&DEID=&personName=&personID=&role=Any&journalName=&journalID=&publisherName=&publisherID=&sortBy=pubDate&count=25</p