Acupuncture at Neiguan (PC6) Shows Potential to Improve Behavioral and Brain Changes in Autism Model Rats
Study Explores Acupuncture Effects on Autism-like Symptoms in Rats
Researchers have investigated whether acupuncture applied at the Neiguan (PC6) point could alleviate behavioral deficits and neuroinflammation in young rats modeled to have autism spectrum disorder (ASD) induced by valproic acid (VPA). The study, published recently, examined the impact of this traditional therapy on cognitive, social, and repetitive behaviors as well as underlying brain changes in these animals. The findings suggest acupuncture may offer some benefits in this experimental setting. Source
Methodology and Experimental Design
Pregnant Sprague-Dawley rats were injected with VPA on gestational day 12.5 to induce ASD-like traits in their offspring. After birth, the young rats were divided into groups receiving either acupuncture at PC6, sham acupuncture, the drug bumetanide (a positive control), or control treatments. Acupuncture was administered manually for 30 minutes daily over 15 days starting from postnatal day 7.
Behavioral Improvements Observed
Compared to untreated ASD model rats, those receiving acupuncture showed improvements in several behavioral tests. These included better performance in the Morris water maze test, indicating enhanced spatial learning and memory, increased social interaction in a three-chamber social test, and reduced repetitive self-grooming behavior. These changes suggest acupuncture helped mitigate some core ASD-like behaviors in this animal model.
Neurobiological Effects in the Hippocampus
On a cellular level, acupuncture reduced hippocampal neuronal damage and lowered markers of neuroinflammation. Specifically, it decreased levels of reactive oxygen species (ROS), inflammatory cytokines interleukin-1β and interleukin-18, and proteins associated with pyroptosis, a form of programmed cell death linked to inflammation. Additionally, acupuncture helped restore the balance of synapse-related proteins, including GAD67 and VGAT, which are important for inhibitory neurotransmission.
Comparison with Drug Treatment and Sham Acupuncture
While both acupuncture and bumetanide improved behavioral and molecular outcomes compared to untreated ASD rats, acupuncture was more effective at increasing certain synaptic proteins but less effective than the drug at reducing oxidative stress and some inflammatory markers. Sham acupuncture did not produce these benefits, supporting the specificity of the PC6 acupuncture point intervention.
Implications for Families and Future Research
This study provides preliminary evidence that acupuncture at PC6 may help reduce some behavioral and brain abnormalities associated with ASD in an animal model. However, these findings are limited to rats and do not establish efficacy or safety in humans with autism. Families interested in complementary therapies should consult healthcare professionals and consider that more research is needed before acupuncture can be recommended as a treatment for ASD.
Limitations and Cautions
The study used a specific animal model induced by prenatal VPA exposure, which may not fully represent the complexity of autism in humans. The mechanisms by which acupuncture exerts its effects remain to be fully elucidated. Clinical trials are necessary to determine whether similar benefits occur in people with ASD and to assess long-term outcomes and safety.
Reference: For detailed study information, see the original publication at PubMed.
Download the images in this article
