Swimming exercise is a promising early intervention for autism-like behavior in Shank3 deletion rats.

Researchers studied rats with a genetic change linked to autism (Shank3 gene deletion). These rats had problems with social memory, learning, and brain development similar to autism. When the rats did swimming exercise for 8 weeks (40 minutes daily, 5 days a week), their autism-like behaviors improved and their brains showed positive changes. This suggests swimming might help children with similar genetic conditions.

This animal study investigated swimming exercise as an early intervention for autism-like behaviors in rats with Shank3 gene deletions, which model autism spectrum disorders. Shank3-deficient rats showed significant deficits in social memory, object recognition, and spatial learning, along with reduced hippocampal volume and altered protein levels. An 8-week swimming protocol (40 minutes daily, 5 days weekly) demonstrated positive effects on these autism-like behaviors and associated brain changes. The study used behavioral testing, MRI brain imaging, and microscopic analysis of brain tissue to evaluate outcomes.

Results suggest swimming exercise may benefit neurodevelopmental recovery in Shank3-related conditions.

Swimming exercise may represent a promising early intervention for Shank3-related autism spectrum disorders. However, human studies are needed before clinical implementation. The findings support investigating structured aquatic therapy programs for children with genetic forms of autism.

Animal study findings may not directly translate to humans. Sample size not reported. Study design unclear from abstract. Long-term effects and optimal exercise parameters unknown. Specific outcome measures and statistical significance not detailed.

SHANK3 is an important excitatory postsynaptic scaffold protein, and its mutations lead to genetic cause of neurodevelopmental diseases including autism spectrum disorders (ASD), Philan McDermid syndrome (PMS), and intellectual disability (ID). Early prevention and treatment are important for Shank3 gene mutation disease. Swimming has been proven to have a positive effect on neurodegenerative diseases. Shank3 gene exon 11-21 knockout rats were intervened by a 40 min/day, 5 day/week for 8-week protocol.

After the intervention, the rats were tested to behavioral measures such as learning and memory, and the volume and H-spectrum of the brain were measured using MRI; hippocampal dendritic spines were measured using Golgi staining and laser confocal. The results showed that Shank3-deficient rats had significant deficits in social memory, object recognition, and water maze learning decreased hippocampal volume and number of neurons, and lower levels of related scaffold proteins and receptor proteins were found in Shank3-deficient rats. It is suggested that early swimming exercise has a positive effect on Shank3 gene-deficient rats, which provides a new therapeutic strategy for the prevention and recovery of neurodevelopmental disorders.