Increased anxiety behaviors in autoimmune mice

Area of Science:

• Neuroscience
• Immunology
• Behavioral Science

Background:

• Systemic lupus erythematosus (SLE) is an autoimmune disorder.
• Anxiety is a common psychiatric manifestation in SLE patients.

Purpose of the Study:

• To investigate anxiety-like behaviors in SLE-prone mice.
• To explore the potential role of cytokines in SLE-associated anxiety.

Main Methods:

• Comparison of SLE-prone NZB x NZW F1 mice with control mice on three anxiety tasks: elevated plus maze, open-field drink test, and novel-object task.
• Assessment of behavioral responses indicative of anxiety, such as avoidance of open spaces.
• Administration of interferon-alpha to control mice to observe its effect on anxiety levels.

Main Results:

• SLE-prone mice exhibited decreased activity and avoidance of open, exposed areas across all tested tasks.
• Control mice injected with interferon-alpha showed anxiety-like behavior in the elevated plus maze.
• These findings suggest a link between cytokine overexpression and anxiety in autoimmune conditions.

Conclusions:

• Cytokines, particularly interferon-alpha, may play a significant role in the development of anxiety-related behavioral changes observed in autoimmune diseases like SLE.
• The study provides a potential animal model for investigating the neurobiological mechanisms underlying psychiatric comorbidities in SLE.