ArticleAlzheimer's & dementia (New York, N. Y.)
The proteomic and metabolomic signature of inherited chromosomally integrated HHV-6 and its role in all-cause dementia and mortality risk: The UK Biobank study.
Article in Alzheimer's & dementia (New York, N. Y.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo examine associations of inherited chromosomally integrated human herpesvirus 6 (iciHHV-6) with incident dementia and mortality, characterize proteomic and metabolomic correlates of carrier status, and evaluate whether these biomarkers relate to dementia and mortality risk.
methodsWe analyzed UK Biobank participants ≥50 years of age with plasma metabolomics (
resultsiciHHV-6 was associated with higher dementia risk (hazard ratio [HR] = 1.32), particularly among women (HR = 1.66) and individuals with elevated Alzheimer's disease polygenic risk (HR = 1.49). Branched-chain amino acids (leucine and isoleucine) were elevated among carriers without mediating dementia risk. Proteomic analyses identified 126 nominally associated iciHHV-6-related proteins, many of which (Neurofilament Light Chain (NEFL), Glial Fibrillary Acidic Protein (GFAP), Yes-Associated Protein 1 (YAP1), Sialic Acid-binding Immunoglobulin-like Lectin 5 (SIGLEC5), Interleukin 19 (IL19), A Disintegrin And Metalloproteinase with Thrombospondin Motifs 16 (ADAMTS16), Sphingomyelin Phosphodiesterase 1 (SMPD1)) were also associated with dementia and/or mortality. Exploratory pathway analyses suggested enrichment of proteins related to immune regulation and post-translational modification. Predictive models identified NEFL, GFAP, Vascular Endothelial Growth Factor A (VEGF), Brevican (BCAN), remnant cholesterol, and polyunsaturated fatty acids as dementia predictors (area under the curve [AUC] = 0.83), whereas NEFL, Growth Differentiation Factor 15 (GDF15) Latent Transforming Growth Factor Beta Binding Protein 2 (LTBP2), Ectodysplasin A2 Receptor (EDA2R) and Advanced Glycosylation End-product Specific Receptor (AGER) predicted mortality (AUC = 0.70). DISCUSSION: iciHHV-6 was associated with increased dementia risk, particularly among women and genetically susceptible individuals, with neuroimmune and metabolic biomarker profiles potentially relevant to brain aging and mortality risk.
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