Aloe vera improves memory and reduces depression in mice.

Area of Science:

• Pharmacology
• Neuroscience
• Ethnobotany

Background:

• Aloe vera (Family Liliaceae) possesses a long history of traditional use for various ailments, including skin disorders and as a laxative.
• Scientific exploration into its broader therapeutic potential, particularly its effects on cognitive and mood-related behaviors, is warranted.

Purpose of the Study:

• To investigate the effects of Aloe vera on learning, memory, depression, and locomotion in established animal models.
• To provide scientific validation for the traditional uses of Aloe vera and explore novel therapeutic applications.

Main Methods:

• Learning and memory were assessed using the passive avoidance task and elevated plus-maze.
• Depression-like behaviors were evaluated via the forced swim test and tail suspension test.
• Locomotor activity was measured using the rota rod test and photoactometer.

Main Results:

• Aloe vera administration significantly improved acquisition and retention in the passive avoidance task and reduced transfer latency in the elevated plus-maze.
• A significant decrease in immobility periods was observed in both the forced swim test and tail suspension test across all tested doses.
• No significant alterations in locomotor activity were detected in the rota rod test or photoactometer.

Conclusions:

• Aloe vera exhibits significant nootropic (learning and memory enhancing) and antidepressant-like effects in mice.
• The findings support the use of Aloe vera for cognitive and mood disorders, independent of its effects on general locomotion.