[Mexidol effects in extreme conditions (experiments with animals)]

Area of Science:

• Neuroscience
• Pharmacology
• Stress Research

Background:

• Extreme environmental and psychological stressors can induce anxiety, fear, and impaired behavior.
• Hypoxia poses a significant threat to survival, necessitating effective countermeasures.
• Current anti-stress medications like diazepam can cause undesirable side effects such as sedation and muscle relaxation.

Purpose of the Study:

• To evaluate the anxiolytic and anti-stress effects of Mexidol in rodent models.
• To assess Mexidol's efficacy in mitigating the effects of acute hypoxia.
• To compare Mexidol's efficacy and side effect profile with diazepam.

Main Methods:

• Rats were exposed to various stressors including open field, elevated plus-maze, and conflict tests.
• Mice were subjected to acute hypoxic conditions to assess lifespan extension.
• Behavioral responses, anxiety levels, and physical reactions were monitored.
• Comparative analysis with diazepam was performed.

Main Results:

• Mexidol (50 and 100 mg/kg) significantly reduced anxiety and fear in rats across multiple stress paradigms.
• The drug restored normal reactions and exploratory behavior while decreasing aggressiveness.
• Mexidol administration extended the lifespan of mice exposed to acute hypoxia.
• Unlike diazepam, Mexidol did not induce sedation or myorelaxation.

Conclusions:

• Mexidol demonstrates potent anxiolytic and anti-stress properties in preclinical models.
• Mexidol exhibits significant anti-hypoxic effects, outperforming diazepam.
• The absence of sedative and muscle-relaxant side effects makes Mexidol a promising therapeutic agent for managing stress and hypoxia in humans.