Human reproductive failure II: immunogenetic and interacting factors

Area of Science:

• Reproductive immunology
• Immunogenetics

Background:

• Reproductive failure can be linked to immunological factors and genes controlling immune responses.
• The major histocompatibility complex (MHC), known as human leukocyte antigens (HLA) in humans, plays a role in various reproductive stages.

Purpose of the Study:

• To review the importance of immunogenetic and interacting factors in human reproductive failure.
• To highlight how studies in related human populations and animal models can enhance understanding of these factors.

Main Methods:

• Review of existing studies on immunogenetic factors in human and animal reproduction.
• Analysis of the role of MHC/HLA genes, cytokines, and natural killer (NK) cells in reproductive processes.

Main Results:

• HLA-linked genes and regulatory factors influence gamete development, embryo formation, implantation, and fetal survival.
• MHC-linked genes in mammals show similar reproductive effects.
• Disruption of interactions between HLA antigens, cytokines, and NK cells can cause reproductive failure.

Conclusions:

• Immunogenetic factors, particularly HLA, are critical in human reproduction.
• Interactions between immune components like HLA, cytokines, and NK cells are vital for successful reproduction.
• Further research in human populations and animal models is essential to elucidate the complex role of immunogenetics in reproductive failure.