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Related Experiment Video

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Derivation of a Human Brain Organoid with Microglia Development
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Human Inflammaging.

Tamàs Fülöp1, Anis Larbi2,3, Jacek M Witkowski4

  • 1Research Center on Aging, Graduate Program in Immunology, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Québec, Canada, tamas.fulop@usherbrooke.ca.

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|May 6, 2019
PubMed
Summary
This summary is machine-generated.

Human aging involves immune changes and inflammaging, an inflammatory state. These processes mutually influence each other, with inflammaging potentially triggering age-related diseases rather than causing them.

Keywords:
Adaptive immune systemAge-related diseasesInflammagingInnate immune systemTrained innate immunity

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Area of Science:

  • Immunology
  • Gerontology
  • Pathophysiology

Background:

  • Human aging is a complex biological process involving significant immune system alterations.
  • Inflammaging, characterized by chronic low-grade inflammation, is a hallmark of aging.
  • Age-related immune changes and inflammaging are increasingly understood to be interconnected, driven by chronic stimulation.

Purpose of the Study:

  • To review the concept of human inflammaging in the context of aging.
  • To explore the relationship between inflammaging and age-related diseases (ARD).
  • To propose a framework for understanding the role of inflammaging in disease manifestation.

Main Methods:

  • Literature review focusing on human aging, immune system changes, and inflammaging.
  • Analysis of current evidence on the interplay between immune reactivity and chronic inflammation.
  • Synthesis of findings to re-evaluate the causal role of inflammaging in ARD.

Main Results:

  • Inflammaging and age-related immune changes are mutually reinforcing processes, not merely sequential.
  • Inflammaging may act as a trigger for the clinical manifestation of ARD, rather than the sole cause.
  • Inflammatory diseases can develop throughout life as exaggerated immune responses to stressors.

Conclusions:

  • Modulating the balance of pro- and anti-inflammatory signals is crucial for healthy aging.
  • Appropriate immune responses to chronic stimulation can delay or prevent ARD.
  • Understanding inflammaging's role as a trigger, not a cause, refines therapeutic strategies for age-related conditions.