Elastomer leachates modulate haemocytes responses in Mytilus edulis.

Area of Science:

• Environmental Science
• Ecotoxicology
• Marine Biology

Background:

• Rubber products contain additives that can leach into aquatic environments.
• These additives pose risks to aquatic organisms, including immune system disruption.

Purpose of the Study:

• To investigate the ecotoxicological effects of rubber leachates from commercial products on Mytilus edulis haemocytes.
• To understand the mechanisms of toxicity induced by rubber-derived pollutants.

Main Methods:

• Exposure of Mytilus edulis haemocytes to rubber leachates from balloons and dishwashing gloves.
• Flow cytometry analysis to assess cell viability, metabolic activity, lysosomal content, neutral lipid levels, DNA integrity, mitochondrial membrane potential, and reactive oxygen species (ROS) production.
• Chemical analysis to identify leached compounds.

Main Results:

• Rubber leachates significantly reduced cell viability, metabolic activity, and lysosomal content.
• Apoptosis, mitochondrial dysfunction, and membrane depolarization were observed in haemocytes.
• Leachates contained hazardous compounds like cyclic amines, benzothiazoles, and zinc, disrupting cellular homeostasis.

Conclusions:

• Consumer rubber products release pollutants that cause sublethal toxicity in mussel immune cells.
• Mechanisms include metabolic disruption, membrane damage, and mitochondrial dysfunction.
• These findings highlight the threat of rubber additives to marine ecosystem health.