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- Animal research· Frontiers in immunology
Systematic review finds platelet factor 4 modulates cognitive, immune, and hematopoietic aging through multiple signaling pathways.
This systematic review examined evidence for platelet factor 4 (PF4) in age-related dysfunction across cognitive, immune, and hematopoietic systems. The authors report that PF4 engages CXCR3 and LDLR receptors to activate downstream signaling, with reported effects including reduced hippocampal neuroinflammation, enhanced synaptic plasticity, restored T-cell balance, and preserved hematopoietic stem cell function in aging. Clinical observational studies identified correlations between circulating PF4 levels and conditions including Alzheimer's disease, sarcopenia, stroke, and coronary artery disease.
Evidence assessment pending · SYSTEMATIC REVIEW
Read the study · Frontiers in immunology ↗ - Observational study· Neuropsychobiology
Emotional neglect trauma associated with lower Klotho and cognitive deficits in adolescents with mood disorders: observational study.
This observational study enrolled 95 adolescents with bipolar or major depressive disorder and 45 healthy controls, identifying three trauma-based subgroups through cluster analysis. Adolescents in the emotional neglect-focused trauma group had lower serum Klotho levels, higher MMP-9 levels, and worse performance on working memory and executive function tests compared to other groups and controls.
Evidence assessment pending · OBSERVATIONAL
Read the study · Neuropsychobiology ↗