Sex and gender influence on immunity and autoimmunity

Area of Science:

• Immunology
• Sex-based biology
• Autoimmune disorders

Background:

• Autoimmune diseases exhibit a significant sex bias, with most conditions predominantly affecting one biological sex.
• Despite decades of observation, the underlying reasons for this sex predilection remain largely unexplained.
• Females are disproportionately affected by the majority of autoimmune diseases.

Purpose of the Study:

• To explore the unexplained sex bias observed in autoimmune diseases.
• To investigate the contributing factors behind the female predominance in autoimmune conditions.
• To synthesize current understanding of the interplay between genetics, epigenetics, and hormones in autoimmune disease etiology.

Main Methods:

• Review of existing epidemiological data on autoimmune disease prevalence across sexes.
• Analysis of genetic and epigenetic studies investigating sex-specific disease associations.
• Examination of hormonal influences on immune system function and autoimmune disease development.

Main Results:

• Consistent female predominance across a wide spectrum of autoimmune diseases confirmed.
• Identification of specific genetic, epigenetic, and hormonal pathways implicated in sex-biased autoimmunity.
• Evidence suggests a multifactorial basis for sex differences in immune responses.

Conclusions:

• The sex bias in autoimmune diseases is a complex trait influenced by multiple biological factors.
• Understanding these sex-specific mechanisms is crucial for developing targeted therapies.
• Further research is warranted to fully elucidate the genetic, epigenetic, and hormonal underpinnings of autoimmune sex differences.