Publications by authors named "Chad A Pollard"

Article Synopsis
  • Neurodegenerative diseases like Alzheimer's are on the rise due to an aging population and lack of effective early treatments, making early detection crucial for better outcomes.
  • Current diagnostics primarily focus on observable symptoms and existing neuronal damage, while specific biomarkers for Alzheimer's are too narrow, and general biomarkers like NfL lack precise insights.
  • Circulating cell-free DNA (cfDNA) shows promise as a minimally invasive early detection biomarker, providing both general and disease-specific information, but further research is essential to overcome technical challenges and establish its clinical use.
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Objective: To investigate the power of DNA methylation variability in sperm cells in assessing male fertility potential.

Design: Retrospective cohort.

Setting: Fertility care centers.

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Complex diseases have multifactorial etiologies making actionable diagnostic biomarkers difficult to identify. Diagnostic research must expand beyond single or a handful of genetic or epigenetic targets for complex disease and explore a broader system of biological pathways. With the objective to develop a diagnostic tool designed to analyze a comprehensive network of epigenetic profiles in complex diseases, we used publicly available DNA methylation data from over 2,400 samples representing 20 cell types and various diseases.

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The sperm epigenome contains a highly unique and specialized epigenetic landscape. Insightful questions need be asked about these epigenetic signatures and their predictive potential to assess the approximately 1 in 6 couples who experience infertility. Among those couples that do experience infertility, approximately half of the cases involve a male factor.

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