Microplastics induce mitochondrial dysfunction and accelerate cardiovascular pathogenesis

Area of Science:

• Environmental Health
• Toxicology
• Cardiovascular Science

Background:

• Microplastics and nanoplastics (MNPs) are pervasive environmental pollutants.
• Increasing evidence links MNPs to systemic toxicity, including cardiovascular effects.
• MNPs are found in human tissues, raising health concerns.

Purpose of the Study:

• To review the mechanisms by which MNPs induce cardiovascular damage.
• To explore the role of mitochondrial dysfunction in MNP-related cardiovascular pathogenesis.
• To examine sex-specific responses and developmental factors.

Main Methods:

• Literature review integrating mechanistic insights.
• Analysis of MNP impact on mitochondrial integrity, oxidative stress, and calcium signaling.
• Examination of MNP effects on inflammation, senescence, mitophagy, and vascular remodeling.

Main Results:

• MNPs impair mitochondrial function, induce oxidative stress, and disrupt calcium signaling in cardiac tissue.
• MNPs promote genomic instability, inflammation, cellular senescence, and mitophagy dysfunction.
• MNPs contribute to pro-atherosclerotic remodeling and show sex-specific effects.

Conclusions:

• MNP exposure poses a significant risk to cardiovascular health through mitochondrial damage.
• Understanding the molecular interactions between MNPs and mitochondria is crucial for developing interventions.
• Mitigating environmental cardiovascular risks requires addressing MNP pollution and its biological impacts.