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© Research
Publication : Current opinion in neurobiology

Microbial and immune factors regulate brain maintenance and aging.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Current opinion in neurobiology - 29 Jul 2022

Travier L, Singh R, Sáenz Fernández D, Deczkowska A,

Link to Pubmed [PMID] – 35914431

Link to DOI – S0959-4388(22)00101-510.1016/j.conb.2022.102607

Curr Opin Neurobiol 2022 Jul; 76(): 102607

Tissue aging can be viewed as a loss of normal maintenance; in advanced age, the mechanisms which keep the tissue healthy on daily bases fail to manage the accumulating “wear and tear”, leading to gradual loss of function. In the brain, maintenance is provided primarily by three components: the blood-brain barrier, which allows the influx of certain molecules into the brain while excluding others, the circulation of the cerebrospinal fluid, and the phagocytic function of microglia. Indeed, failure of these systems is associated with cognitive loss and other hallmarks of brain aging. Interestingly, all three mechanisms are regulated not only by internal conditions within the aging brain, but remain highly sensitive to the peripheral signals, such as cytokines or microbiome-derived molecules, present in the systemic circulation. In this article, we discuss the contribution of such peripheral factors to brain maintenance and its loss in aging.