Buzhong Yiqi decoction attenuates acquired myasthenia by regulating the JAK2/STAT3/AKT signaling pathway, inhibiting inflammation, and improving mitochondrial function.

Acquired myasthenia (AM), a debilitating autoimmune disease, is typically characterized by skeletal muscle fatigue and weakness. Despite advances in myasthenia gravis treatment, current approaches remain unsatisfactory and many result in unexpected side effects. Traditional Chinese medicine has shown great potential in the treatment of myasthenia gravis, including relieving myasthenic symptoms, improving patients' quality of life, and reducing Western medicine side effects. This study investigates the protective effects and mechanism of BZYQD in mice with acquired myasthenia. BZYQD alleviates the reduced grip strength and increased expression of MAFbx and MuRF-1 in mice with acquired myasthenia. It also reduces levels of pro-inflammatory factors IL-1β, IL-6, and TNF-α in the mouse serum. In addition, BZYQD reduces ROS accumulation and the mitochondrial ROS production rate, while increasing ATP levels and mitochondrial membrane potential in mice with acquired myasthenia. Moreover, BZYQD decreases the expression of p-JAK2, p-STAT3, and p-AKT in the skeletal muscle of mice with acquired myasthenia. In summary, BZYQD reduces inflammation, enhances mitochondrial function, and regulates the JAK2/STAT3/AKT signaling pathway to treat acquired myasthenia.