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Related Experiment Videos

Immunology and aging.

S Kudlacek1, R Willvonseder, P Stohlawetz

  • 1Institute of Pathophysiology, AKH, University of Vienna, Austria.

The Aging Male : the Official Journal of the International Society for the Study of the Aging Male
|June 9, 2006
PubMed
Summary
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Aging significantly alters T cells and monocytes, impacting immune function and increasing susceptibility to disease. However, dendritic cells remain unaffected, offering potential for immunotherapy in older adults.

Area of Science:

  • Immunology
  • Gerontology
  • Cell Biology

Background:

  • Aging is associated with functional and phenotypic changes in immune cells like T cells, B cells, and monocytes.
  • Increased incidence of autoimmunity, infections, and cancer is reported in the elderly.
  • Healthy elderly individuals exhibit alterations in immunocompetent cells, as per the SENIEUR protocol.

Purpose of the Study:

  • To investigate the impact of aging on the immunophenotype and function of various immune cells.
  • To identify age-related changes in T-cell subsets, monocytes, and dendritic cells.
  • To explore the potential of dendritic cells in immunotherapy for aging populations.

Main Methods:

  • Analysis of peripheral blood T-cell subtypes (CD4(+) and CD8(+)) and monocyte immunophenotype.

Related Experiment Videos

  • Assessment of cell migration (transendothelial migration) in T cells and monocytes.
  • Evaluation of dendritic cell immunophenotype and function in aged individuals.

    • Main Results:

    • Age-related shift from naive CD45RA(+) to memory CD45RA(-) CD4(+) T cells.
    • Increased CD57 co-expression in CD8(+) T cells and altered CD54 expression in monocytes.
    • Impaired T-cell transendothelial migration with aging, while monocyte migration remains unaffected.
    • Dendritic cells show no significant changes in immunophenotype or function with age.

    Conclusions:

    • Aging alters the immunophenotype and function of T cells and monocytes, affecting cytokine production and cell migration.
    • Dendritic cells appear resilient to the aging process, maintaining their immunophenotype and function.
    • Dendritic cells hold promise as a therapeutic tool for immunotherapy in the context of aging.