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Inflammatory Response01:28

Inflammatory Response

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An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Inflammatory Response I: Vascular and Cellular01:30

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The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
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The Effect of Aging on Tissues01:19

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Factors Affecting the Risk of Infection01:26

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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
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Quantitative Imaging of Lineage-specific Toll-like Receptor-mediated Signaling in Monocytes and Dendritic Cells from Small Samples of Human Blood
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Can blocking inflammation enhance immunity during aging?

Emma S Chambers1, Arne N Akbar2

  • 1Division of Infection and Immunity, University College London, London, United Kingdom; Centre for Immunobiology, Blizard Institute, Queen Mary University of London, London, United Kingdom.

The Journal of Allergy and Clinical Immunology
|May 11, 2020
PubMed
Summary
This summary is machine-generated.

Aging leads to inflammaging, a chronic inflammation that weakens immunity and vaccine responses in older adults. Strategies to reduce inflammation may improve immune function in this population.

Keywords:
Inflammagingp38-MAP Kinasesenescencesenolytics

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Area of Science:

  • Gerontology
  • Immunology
  • Inflammation Biology

Background:

  • Aging is a global challenge, marked by increased lifespan but not healthspan, leading to chronic diseases and infections in older adults.
  • A hallmark of aging is inflammaging, a chronic low-grade inflammation with elevated IL-6, TNF-α, and C-reactive protein.
  • Chronic inflammation impairs T-cell and macrophage function, negatively impacting vaccine efficacy.

Purpose of the Study:

  • To explore the potential of anti-inflammatory therapeutic strategies for enhancing immunity in aging populations.
  • To review the causes, cellular sources, and mechanisms of inflammaging.
  • To discuss existing interventions targeting inflammation to boost immunity in older adults.

Main Methods:

  • This review synthesizes existing literature on inflammaging and its impact on immunity.
  • It examines the underlying mechanisms of inflammation-induced immune dysfunction.
  • It surveys current therapeutic interventions aimed at mitigating inflammation in aging.

Main Results:

  • Inflammaging is characterized by specific inflammatory mediators and cellular sources.
  • Inflammation demonstrably interferes with crucial immune cell functions and vaccine responses.
  • Various interventions targeting inflammation have been explored for their immunomodulatory effects.

Conclusions:

  • Reducing chronic inflammation associated with aging may be a viable strategy to improve immune function.
  • Understanding inflammaging mechanisms is key to developing effective immunotherapies for older adults.
  • Further research into anti-inflammatory interventions is warranted to enhance healthspan and combat age-related diseases.