We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
53 | Cytotoxic Effects of Nanoplastics on the Male Gonads of Mytilus Galloprovincialis
AI summary Read the abstract
Scientists found that tiny plastic particles (nanoplastics) damaged the sperm-producing tissue in mussels, causing cell stress, damaged cell structures, and cell death that got worse the longer the exposure lasted. While this study was done in mussels, not humans, it adds to growing evidence that nanoplastics—now found throughout our air, food, and water—may harm reproductive health in living organisms, a concern worth taking seriously as plastic pollution continues to rise.
Nanoplastics are increasingly recognized as global pollutants due to their persistence in marine ecosystems and their potential to disrupt biological functions in aquatic organisms. Their small size enables cellular uptake, raising concern about their impact on reproductive systems, particularly in filter-feeding invertebrates.In this study, we investigated the potential toxic effects of polystyrene nanoplastics (NPs) on the lobular testis of Mytilus galloprovincialis after exposure to environmentally relevant concentrations at early and late time points (1 and 11 days, respectively).Building on our previous study, demonstrating that micro and nanoplastics affect female reproductive tissues, we first performed histological analyses. Results revealed that NPs alter spermatic cysts by impairing germ cell differentiation. Consequently, cysts appeared partially or completely empty compared to controls.Furthermore, NPs exposure disrupted the physiological redox balance by increasing oxidative stress, as indicated by increased reactive oxygen species (ROS) production and lipid peroxidation. This imbalance was accompanied by a significant decrease in intracellular antioxidant defense, particularly in mitochondrial superoxide dismutase 2 (SOD2) protein expression.After 11 days of exposure, more pronounced effects were observed, including damage to cytoskeletal structures, decreased androgen receptor expression, and activation of apoptotic pathways.Taken together, these findings indicate that NPs exposure in mussels altered key cellular processes, impairing spermatogenesis and compromising reproductive function.
More Papers Like This
Environmental contamination with polystyrene micro and nano plastic affects Mytilus galloprovincialis ovaries
AI summary Read the abstract
Researchers exposed Mediterranean mussels (Mytilus galloprovincialis) to 5 µm microplastics and 0.1 µm nanoplastics and found that both triggered oxidative stress, disrupted cytoskeletal proteins, and impaired oocyte maturation, with nanoplastics causing more severe suppression of egg cell proliferation and higher rates of cell death — raising concerns for coastal mollusk reproductive health.
Polystyrene Nanoplastics in Aquatic Microenvironments Affect Sperm Metabolism and Fertilization of Mytilus galloprovincialis (Lamark, 1819)
AI summary Read the abstract
Researchers exposed mussel sperm to amino-modified polystyrene nanoplastics of different sizes and measured the effects on fertilization. The study found that 50-nanometer particles caused structural damage to sperm membranes, DNA damage, and reduced motility and fertilizing capacity, while 100-nanometer particles had no significant effect. These findings suggest that the smallest nanoplastic particles may pose the greatest threat to reproductive success in marine organisms.
Polystyrene Microplastic Exposure Adversely Affects Oocyte Quality and Ovary Health Status in Mytilus galloprovincialis
AI summary Read the abstract
Scientists found that mussels exposed to tiny plastic beads (the same kind found in everyday plastic pollution) for just 48 hours showed damaged egg cells, stress responses, and disrupted metabolism in their reproductive organs. Since mussels are filter feeders often used to gauge ocean pollution levels—and are also a food source for humans—this research is a warning sign that microplastics may harm reproductive health in marine life, raising questions about what similar exposure could mean for other animals, including us, as plastic pollution continues to build up in the food chain.
Microplastics and Nanoplastics and Their Effects on Reproductive Health: Potential Risks and Mechanisms
AI summary Read the abstract
This review summarizes existing animal and cell studies on how tiny plastic particles (microplastics and nanoplastics) may harm fertility, damaging eggs, sperm, and embryo development by triggering cell stress and hormone disruption. While the exact risk to humans isn't confirmed yet, the findings highlight why reducing plastic exposure may matter for reproductive health.
Exploring the Impact of Polystyrene Microplastic Beads on Male Gonads of the Marine Mussel, Mytilus galloprovincialis
AI summary Read the abstract
Researchers exposed marine mussels to polystyrene microplastic beads and examined the effects on male reproductive tissue. They found that the microplastics disrupted the structure of sperm-producing cells in a dose-dependent manner, accompanied by signs of oxidative stress and metabolic disturbance. The study raises concerns about the potential impact of microplastic pollution on the reproductive health of commercially and ecologically important marine species.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.