Nanoparticle Effects on Male Reproductive Health

Nanoparticles, engineered materials with dimensions typically below 100 nanometres, are increasingly employed in medicine, industry and consumer products. Their unique surface properties and high reactivity enable novel diagnostics and targeted therapies, but also raise concerns regarding unintended interactions with biological systems. In the male reproductive tract, nanoparticles may traverse physiological barriers, notably the blood–testis barrier, leading to accumulation in testicular tissue. Common mechanisms of toxicity include generation of reactive oxygen species, disruption of mitochondrial function, DNA damage and perturbation of endocrine signalling. These insults can impair spermatogenesis, alter sperm motility and morphology, and reduce levels of key reproductive hormones. The global prevalence of infertility concerns and the expanding use of nanomaterials have prompted a concerted effort to elucidate these risks, inform material design and guide regulatory frameworks. A clear understanding of dose- and surface-dependent effects, combined with mechanistic insight, is essential to safeguard male reproductive health while harnessing the benefits of nanotechnology.

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Nanoparticle Effects on Male Reproductive Health publication trend

The graph below shows the total number of articles in nanoparticle effects on male reproductive health across all publications each year (not limited to Nature Index journals).

Technical terms

Nanoparticle: A particle with at least one dimension below 100 nanometres.

Reactive oxygen species (ROS): Chemically reactive molecules derived from oxygen that can damage lipids, proteins and DNA.

Blood–testis barrier: A physical and biochemical barrier that shields developing germ cells from toxins and immune cells.

Spermatogenesis: The process of sperm cell development within the seminiferous tubules of the testis.

Adverse outcome pathway (AOP): A structured sequence of events linking a molecular initiating event to an adverse health outcome.

References

1. Putative adverse outcome pathways for silver nanoparticle toxicity on mammalian male reproductive system: a literature review. Particle and Fibre Toxicology (2023).
2. In Vitro Cytotoxicity Effects of Zinc Oxide Nanoparticles on Spermatogonia Cells. Cells (2020).
3. Perspectives of Nanoparticles in Male Infertility: Evidence for Induced Abnormalities in Sperm Production. International Journal of Environmental Research and Public Health (2021).