Bacteriospermia and Male Infertility: Role of Oxidative Stress

Area of Science:

• Reproductive Medicine
• Microbiology
• Urology

Background:

• Male infertility is a prevalent global health issue with diverse causes.
• Bacteriospermia (bacteria in semen) is implicated in approximately 15% of male infertility cases.
• Bacterial infections lead to inflammation and oxidative stress in the urogenital tract.

Purpose of the Study:

• To elucidate the role of bacteriospermia in male infertility.
• To understand the mechanisms by which bacteria impact sperm parameters.
• To highlight the need for further research into specific bacterial species and their effects.

Main Methods:

• Review of existing literature on bacteriospermia and male infertility.
• Analysis of the impact of bacterial load and associated inflammation on sperm parameters.
• Examination of oxidative stress (OS) and reactive oxygen species (ROS) generation in relation to bacterial presence.

Main Results:

• Bacterial infections induce inflammation and leukocyte infiltration, leading to oxidative stress.
• Bacteria can directly harm sperm or indirectly through ROS, impairing motility, volume, capacitation, and causing apoptosis.
• Acute bacteriospermia is often associated with leukocytospermia, both compromising fertility via OS-mediated sperm damage.

Conclusions:

• Bacteriospermia is a significant, yet poorly understood, contributor to male infertility.
• Oxidative stress is a key mechanism linking bacterial infection to impaired sperm function and male infertility.
• Further investigation into individual bacterial species is crucial for targeted therapies.