Fight Aging! Newsletter, July 25th 2022
This study further demonstrates that AMD is not a single condition or an isolated disease, but is often a signal of systemic malfunction which could benefit from targeted medical evaluation in addition to localized eye care."
Microglia in the Aging Brain, Both Protective and Harmful
https://www.fightaging.org/archives/2022/07/microglia-in-the-aging-brain-both-protective-and-harmful/
A growing body of evidence implicates the changing behavior of microglia in the aging of the brain and onset of neurodegeneration. Microglia are analogous to macrophages, innate immune cells unique to the central nervous system. They adopt different packages of behaviors, called polarizations, in response to circumstances. With age, microglia tend towards an inflammatory polarization, triggered by systemic inflammatory signaling and molecular debris characteristic of aged tissues. Further, an increasing number of microglia become senescent, producing pro-inflammatory signals that contribute further to the inflammation of brain tissue and dysfunction of other microglia. Yet for all this, microglia are also protective in function, at least until they are overwhelmed by the aged environment and begin contributing to its decline rather than fighting against it.
Neuroinflammation is a hallmark of many neurodegenerative diseases (NDs) and plays a fundamental role in mediating the onset and progression of disease. Microglia, which function as first-line immune guardians of th...
Source: Fight Aging! - Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
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