Publications by authors named "P A Stewart"
Volatile hydrocarbon exposures and immune-related illnesses among Deepwater Horizon oil spill workers.
J Expo Sci Environ Epidemiol
December 2024
Background: Despite evidence from experimental studies linking some petroleum hydrocarbons to markers of immune suppression, limited epidemiologic research exists on this topic.
Objective: The aim of this cross-sectional study was to examine associations of oil spill related chemicals (benzene, toluene, ethylbenzene, xylene, and n-hexane (BTEX-H)) and total hydrocarbons (THC) with immune-related illnesses as indicators of potential immune suppression.
Methods: Subjects comprised 8601 Deepwater Horizon (DWH) oil spill clean-up and response workers who participated in a home visit (1-3 years after the DWH spill) in the Gulf Long-term Follow-up (GuLF) Study.
Intraductal papillary mucinous neoplasms (IPMN) are commonly detected pancreatic cysts that may transform into pancreatic ductal adenocarcinoma (PDAC). Predicting which IPMNs will progress to PDAC remains a clinical challenge. Moreover, identifying those clinically evident IPMNs for which a surveillance approach is best is a dire clinical need.
View Article and Find Full Text PDFGenerating Real-World Evidence From the Excellence Network in Rheumatology.
Pharmacoepidemiol Drug Saf
December 2024
Purpose: The Excellence Network in RheumatoloGY (ENRGY) was founded in 2021 and encompasses data from more than 700 private practice rheumatology providers throughout the United States, forming a practice-based research network (PBRN).
Methods: Electronic health record (EHR) data from participating practices are aggregated, including structured data (e.g.
Article Synopsis
- Immunotherapy has enhanced survival rates for patients with advanced clear cell renal cell carcinoma (ccRCC), but many patients still develop resistance to treatment.
- A study examined tumor samples from patients with both treatment-naïve and treatment-exposed ccRCC, revealing that tumors exposed to immunotherapy contained more immune cells (like CD8+ T cells and neutrophils) and showed significant changes in cellular markers.
- Key findings included increased expression of COL4A1 and ITGAV in the stroma of treated tumors, suggesting a need for further investigation into how these changes impact the tumor immune environment and potential new therapies.
Summary: The integration of metabolomics with other omics ("multi-omics") offers complementary insights into disease biology. However, this integration remains challenging due to the fragmented landscape of current methodologies, which often require programming experience or bioinformatics expertise. Moreover, existing approaches are limited in their ability to accommodate unidentified metabolites, resulting in the exclusion of a significant portion of data from untargeted metabolomics experiments.
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