Oxidative stress and redox regulation of gametogenesis, fertilization, and embryonic development

Satoshi Tsunoda1, Naoko Kimura2, Junichi Fujii1

  • 1Department of Biochemistry and Molecular Biology, Graduate School of Medical Science Yamagata University 2-2-2 Iidanishi 990-9585 Yamagata Japan.

Insights

Oxidative stress from reactive oxygen species (ROS) impairs fertility in both sexes. Minimizing ROS is crucial for assisted reproduction, though ROS also play beneficial signaling roles, complicating treatments.

Area of Science:

  • Reproductive Biology
  • Oxidative Stress Research
  • Infertility Mechanisms

Background:

  • Elevated reactive oxygen species (ROS) induce oxidative stress, a primary factor in male and female infertility.
  • Oxidative stress leads to cellular damage (nucleic acid, protein, lipid oxidation), causing cell death or senescence.
  • Minimizing oxidative stress is critical for successful in vitro fertilization (IVF) and assisted reproductive technologies (ART).

Purpose of the Study:

  • To clarify the mechanisms underlying oxidative stress-induced infertility.
  • To address challenges in assisted reproductive technologies related to oxidative stress.
  • To investigate the dual roles of ROS in reproduction.

Main Methods:

  • Review of current understanding of oxidative stress in reproduction.
  • Discussion of challenges in assisted reproductive technologies.
  • Exploration of advanced technologies like genetic modification for studying mammalian reproduction.

Main Results:

  • Oxidative stress is a significant contributor to infertility.
  • ROS exhibit dual functions: detrimental in excess, but essential for intracellular signaling.
  • ART success is hampered by oxidative stress, necessitating further research.

Conclusions:

  • Understanding the complex roles of ROS is key to overcoming infertility.
  • Advanced technologies are vital for unraveling reproductive mechanisms and improving ART outcomes.
  • Targeting oxidative stress pathways offers potential therapeutic strategies for infertility.

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