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Pathogens Shape Sex Differences in Mammalian Aging.

Morgane Tidière1, Adèle Badruna1, David Fouchet1

  • 1Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, UMR5558, F-69622, Villeurbanne, France; LabEx ECOFECT, Université de Lyon, F-69000, Lyon, France.

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Summary
This summary is machine-generated.

Pathogens may explain why males and females have different lifespans and aging rates. This study proposes a framework to investigate how the host

Keywords:
immunosenescencelife-history traitslifespanmedicinepathogen exposure

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Area of Science:

  • Biogerontology
  • Evolutionary Biology
  • Immunology

Background:

  • Sex differences in lifespan and aging are not fully understood.
  • The role of pathogens in these sex differences has been overlooked.
  • Hormonal and resource allocation differences between sexes influence pathogen response.

Purpose of the Study:

  • To propose an integrative framework linking pathogenic environments to sex differences in lifespan and aging.
  • To explore how pathogens shape sex-specific immune responses and mortality patterns.
  • To highlight the need for considering sex in medical research.

Main Methods:

  • Conceptual framework development.
  • Literature review and synthesis.
  • Theoretical modeling of host-pathogen interactions and sex-specific selection.

Main Results:

  • Pathogens can drive sex differences in immune performance.
  • Differential pathogen exposure and sensitivity can lead to divergent mortality trajectories.
  • An integrative framework is proposed to connect host-pathogen dynamics with aging and lifespan.

Conclusions:

  • Pathogens represent a significant, understudied factor in sex differences in aging and lifespan.
  • Future research should focus on mechanisms linking sex, pathogens, immunity, and mortality.
  • Integrating sex as a biological variable is crucial for advancing medicine and biogerontology.