Atrazine Inhalation Causes Neuroinflammation, Apoptosis and Accelerating Brain Aging

Area of Science:

• Environmental toxicology
• Neuroscience
• Aging research

Background:

• Environmental contaminants, including the herbicide Atrazine (ATR), are linked to increased neurological disease risk.
• Atrazine is a widely used herbicide with demonstrated potential to harm brain neuronal circuits.
• The effects of Atrazine inhalation on different age groups remain unexplored.

Purpose of the Study:

• To investigate the impact of Atrazine inhalation on young and aged mice.
• To compare the neurological and behavioral responses to Atrazine exposure between age groups.

Main Methods:

• Young and aged mice were exposed to 25 mg of Atrazine daily for 28 days.
• Behavioral tests were conducted, and brain tissue was collected post-exposure.
• Dimethyl sulfoxide (DMSO) and saline were used as a vehicle for Atrazine administration.

Main Results:

• Atrazine inhalation induced behavioral alterations and impaired motor and memory functions in both young and aged mice.
• Aged mice exhibited more pronounced negative effects compared to young mice.
• Exposure led to oxidative stress, impaired antioxidant responses, lipid peroxidation, activation of NF-κB pathways, increased pro-inflammatory cytokines, and apoptosis in both groups, with greater sensitivity in older mice.

Conclusions:

• Aged mice are more susceptible to Atrazine inhalation than young mice.
• The physiological response to air pollutant exposure is diminished in older individuals.
• This study underscores the increased vulnerability of the aging population to environmental toxins.