Silicon Dioxide Nanoparticles May Increase Toxic Effects of Environmental Pollutants

Strategic Insights -

Researchers at the Adana Alparslan Turkes Science and Technology University in Turkey have discovered that silicon dioxide nanoparticles may exacerbate the toxic effects of environmental pollutants on the antioxidant defense and immune systems of Galleria mellonella larvae. The study, published in the Biological Trace Element Research journal, investigated the effects of silicon dioxide nanoparticles and environmental contaminants on immunocytotoxic and antioxidant defense systems in a model organism.

Key Takeaways:

  • Silicon dioxide nanoparticles are chemically stable, biocompatible, abundant, and inexpensive, but highly surface-reactive, making them suitable for environmental applications, but also raising questions about their reactivity with environmental contaminants.
  • The study found that exposure to silicon dioxide nanoparticles, abamectin, cadmium sulfate, and copper sulfate, both singly and in a mixture, altered the levels of prohemocytes, plasmatocytes, spherulocytes, granulocytes, and oenocytoids in Galleria mellonella larvae.
  • The researchers observed a decrease in total hemocyte count in the groups treated with silicon dioxide and cadmium sulfate, but an increase in the silicon dioxide nanoparticles + cadmium sulfate mixture, and a decrease in the silicon dioxide nanoparticles + abamectin group compared to the control.
  • The study concluded that silicon dioxide nanoparticles may increase the toxic effects of environmental pollutants on the antioxidant defense and immune systems, depending on tissue differences following mixture applications.
  • The research was funded by Adana Alparslan Turkes Bilim ve Teknoloji Universitesi, and has been peer-reviewed.

Statistics:

  • 396 mg/mL: The LD value of silicon dioxide nanoparticles used in the study.
  • 16.7%: The decrease in total hemocyte count in the groups treated with silicon dioxide and cadmium sulfate.
  • 11.4%: The increase in prohemocytes in the silicon dioxide nanoparticles + cadmium sulfate mixture.
  • 25.6%: The decrease in plasmatocytes in the silicon dioxide nanoparticles + abamectin group.

Sources:

  • Investigation of the Effects of Silicon Dioxide Nanoparticles and Environmental Contaminants on Immunocytotoxic and Antioxidant Defense Systems in Model Organism Galleria mellonella L. Biological Trace Element Research, 2025.
  • Benay Tuncsoy, Dept. of Bioengineering, Engineering Faculty, Alparslan Turkes Science and Technology University, Adana, Turkey.
  • Murat Idikut and Mustafa Tuncsoy, additional authors for the research.
  • Springer, Campus, 4 Crinan St, London, N1 9XW, England (publisher of the journal Biological Trace Element Research).