Diabetes-driven oxidative stress and calcium dysregulation in gametogenesis and early fertilization

Area of Science:

• Reproductive Biology
• Endocrinology
• Cellular Physiology

Background:

• Diabetes mellitus causes chronic hyperglycemia and oxidative stress, negatively impacting male and female reproductive functions.
• Reactive oxygen species (ROS) and disrupted calcium (Ca2+) signaling are key mechanisms linking diabetes to impaired gametogenesis and fertilization.
• These cellular disruptions lead to mitochondrial dysfunction, DNA damage, and apoptosis in gametes, compromising fertility.

Purpose of the Study:

• To review the molecular, experimental, and clinical evidence linking the ROS-Ca2+-mitochondrial axis to reproductive dysfunction in diabetes.
• To explore how diabetes-related factors like microvascular injury and inflammation exacerbate these reproductive disturbances.
• To discuss potential therapeutic strategies for improving fertility in diabetic individuals.

Main Methods:

• Integration of molecular, experimental, and clinical data.
• Review of existing literature on diabetes, oxidative stress, calcium signaling, and reproductive health.
• Analysis of the role of the ROS-Ca2+-mitochondrial axis in diabetic reproductive dysfunction.

Main Results:

• Sustained ROS production and Ca2+ dysregulation are central to diabetes-induced impairment of gametogenesis and fertilization.
• Oxidative stress and Ca2+ imbalance in gametes lead to mitochondrial dysfunction, DNA damage, and apoptosis.
• Diabetes-related microvascular injury, hormonal changes, and inflammation worsen these cellular disturbances, impacting reproductive capacity.

Conclusions:

• The ROS-Ca2+-mitochondrial axis is critically involved in diabetic reproductive dysfunction.
• Targeted antioxidants, Ca2+-modulating agents, and other molecular interventions show promise for restoring redox and Ca2+ homeostasis.
• Understanding these pathways offers potential therapeutic targets to enhance fertility in patients with diabetes.