1. Sex differences in the transcriptional response to acute inflammatory challenge: A randomized controlled trial of endotoxin
- Author
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Boyle, Chloe C, Cole, Steve W, Eisenberger, Naomi I, Olmstead, Richard, Breen, Elizabeth C, and Irwin, Michael R
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Clinical Research ,Women's Health ,Mental Health ,Neurosciences ,Genetics ,2.1 Biological and endogenous factors ,6.1 Pharmaceuticals ,Inflammatory and immune system ,Gene expression ,Immune system ,Inflammation ,Sex ,Transcription factors ,Clinical sciences ,Immunology - Abstract
BackgroundSex differences in immune-based disorders are well-established, with female sex associated with a markedly heightened risk of autoimmune disease. Female sex is also overrepresented in other conditions associated with elevated inflammation, including depression, chronic pain, and chronic fatigue. The mechanisms underlying these disparities are unclear. This study used an experimental model of inflammatory challenge to interrogate molecular mechanisms that may contribute to female vulnerability to disorders with an inflammatory basis.MethodIn this analysis of a secondary outcome from a randomized controlled trial, 111 participants (67 female) received either a bolus injection of endotoxin (n = 59) or placebo (n = 52). Participants provided blood samples before and 0.5 h post-injection for assessment of differential activation of key pro-inflammatory (i.e., activator protein (AP)-1; nuclear factor (NF)-κB) and immunoregulatory (i.e., glucocorticoid receptor (GR); cAMP response element binding protein (CREB)) signaling pathways via genome-wide expression profiling and promoter-based bioinformatics analyses.ResultsRelative to males, females exhibited greater endotoxin-induced increases in bioinformatic measures of CREB transcription factor activity (p's
- Published
- 2024