ReviewFrontiers in aging2026
Reframing brain aging: neuroinflammation as an interconnected network process.
Review in Frontiers in aging, 2026. 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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0 citing papers in PubMed.
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Authors and funding
3 authors.
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Abstract
Neuroinflammation has emerged as a central component of brain aging, shaping the balance between neural resilience and vulnerability to cognitive decline. Rather than representing a simple consequence of neuronal damage, neuroinflammatory processes are increasingly recognized as active regulators of synaptic integrity, neuronal survival, and circuit function. Under physiological conditions, neuroimmune signaling may contribute to tissue homeostasis, synaptic maintenance, and adaptive responses to cellular stress; however, persistent or dysregulated inflammatory activity may disrupt these functions, promoting network instability and increasing vulnerability to age-related pathology. These processes arise from complex interactions among neurons, glial cells, vascular elements, and peripheral immune signals that together form dynamic neuroimmune networks. Within the aging brain, microglia and astrocytes play key roles in coordinating immune surveillance, synaptic remodeling, and inflammatory signaling. Age-related alterations in glial function can disrupt homeostatic communication within neuron-glia networks, promoting persistent low-grade inflammation and altered synaptic regulation. Importantly, neuroinflammatory activity in the brain is strongly influenced by systemic factors, including peripheral immune aging, changes in blood-brain barrier integrity, and signals originating from the gut-brain axis. In this mini-review, we discuss brain aging from a network perspective, emphasizing how multiscale interactions between cellular and systemic processes shape neuroinflammatory trajectories across the lifespan. We further highlight emerging approaches-including multi-omics technologies, advanced neuroimaging, and systems-level analyses-that are enabling a more integrated understanding of neuroinflammatory dynamics. Viewing neuroinflammation as a network phenomenon may provide new insights into mechanisms of cognitive aging and identify potential targets for strategies aimed at preserving brain health.
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