Moxibustion Protects Dopaminergic Neurons in Parkinson's Disease through Antiferroptosis

Area of Science:

• Neuroscience
• Biochemistry
• Traditional Chinese Medicine

Background:

• Ferroptosis, a form of regulated cell death, is increasingly linked to dopaminergic neuron loss in Parkinson's disease (PD).
• The precise mechanisms controlling ferroptosis in PD pathogenesis and effective therapeutic interventions remain areas of active investigation.
• Moxibustion, a traditional Chinese medicine technique, is clinically observed to ameliorate PD motor symptoms, suggesting a potential role in modulating disease processes.

Purpose of the Study:

• To investigate the efficacy of moxibustion in modulating ferroptosis and its impact on dopaminergic neuron survival in a rat model of Parkinson's disease.
• To evaluate the effects of moxibustion on key ferroptosis markers, including glutathione peroxidase 4 (GPX4), Ferritin Heavy Chain 1 (FTH1), reactive oxygen species (ROS) levels, and mitochondrial morphology.

Main Methods:

• A Parkinson's disease rat model was established using stereotactic injection of 6-hydroxydopamine.
• PD rats were treated with moxibustion using Shi's moxa sticks.
• Ferroptosis levels were assessed by measuring GPX4 and FTH1 expression, ROS generation, and mitochondrial ultrastructure.

Main Results:

• Moxibustion treatment significantly reduced behavioral scores in PD rats.
• The therapy effectively alleviated the level of ferroptosis, evidenced by decreased ROS and improved mitochondrial morphology.
• Moxibustion treatment promoted the survival of dopaminergic neurons in the substantia nigra pars compacta (SNpc).

Conclusions:

• Shi's moxa sticks demonstrate a significant capacity to suppress ferroptosis in the context of Parkinson's disease.
• Moxibustion therapy improves dopaminergic neuron survival and motor function in PD rats, likely by mitigating ferroptosis.
• These findings suggest moxibustion holds promise as a complementary and alternative therapy for Parkinson's disease patients.