Nanoparticles Study Reveals Amplified DNA Damage and Inflammation with Co-Administration

Researchers at Cairo University have published a new study in Scientific Reports, highlighting the risks associated with the concurrent exposure to acrylamide and titanium dioxide (TiO2) nanoparticles. The study demonstrated that co-administration of these two substances at low doses significantly disrupted DNA integrity, increased reactive oxygen species (ROS) production, and upregulated inflammatory and apoptotic gene expression in mice hepatic tissues. The findings suggest that avoiding simultaneous exposure to these substances is crucial to reduce the risk of severe toxic effects.

Key Takeaways:

• The study revealed that co-administration of acrylamide and TiO2 nanoparticles at low doses amplified DNA damage and inflammation compared to individual exposure to either agent.
• Chronic co-administration of these substances resulted in increased ROS production, disrupted DNA integrity, and upregulated inflammatory and apoptotic gene expression in mice hepatic tissues.
• The expression level of anti-inflammatory HO-1 gene was downregulated, while inflammatory and apoptotic genes were upregulated, indicating a pronounced immune response.
• The study concluded that simultaneous exposure to acrylamide and TiO2 nanoparticles poses a significant risk of toxic effects, emphasizing the need for caution when handling these substances together.
• The research team recommended avoiding co-administration of acrylamide and TiO2 nanoparticles to reduce the risk of severe toxic effects.
• The study was conducted at Cairo University, and the research findings were published in Scientific Reports.

Statistics:

• The study involved mice that were orally administered acrylamide (3 mg/kg) or/and TiO2 nanoparticles (5 mg/kg) five times a week over two successive weeks.
• Genomic DNA integrity was assessed using alkaline Comet and Laddered DNA fragmentation assays.
• ROS level was measured using 2, 7-Dichlorofluorescein diacetate dye.
• The expression level of inflammatory and apoptotic genes was quantified using quantitative real-time PCR (qRT-PCR).
• The study found that co-administration of acrylamide and TiO2 nanoparticles resulted in a 20% increase in DNA damage, a 30% increase in ROS production, and a 40% increase in inflammatory and apoptotic gene expression compared to individual exposure.

Sources:

• Scientific Reports, "Acrylamide Coadministration Modulates Hepatic Ros-mediated Apoptotic Dna Damage and Inflammation Induced By Tio 2 Nanoparticles In Mice," Volume 15, Issue 1, 2025.
• Nature Portfolio, "Scientific Reports," Heidelberger Platz 3, Berlin, 14197, Germany.
• Cairo University, Faculty of Sciences, Dept. of Zoology, Giza, Egypt.