Mapping the Knowledge Landscape of Muscle Disorders in Rheumatoid Arthritis: A Bibliometric and Bioinformatics Study.

Researchers analyzed thousands of scientific studies published between 2015 and 2024 to understand how rheumatoid arthritis (RA) affects muscles. Rheumatoid arthritis is an autoimmune condition that primarily attacks joints, but this comprehensive review reveals that muscle problems are an important complication that deserves more attention. The study found that muscle inflammation (myositis) is a major research focus, and scientists have identified specific genes and biological pathways that connect RA to muscle disorders. Key inflammatory molecules like TNF, IL-6, and specific signaling pathways (TNF, JAK-STAT, and IL-17) play central roles in both conditions. The United States and China lead research in this area, with Swedish institutions producing the most studies. For patients with RA experiencing muscle weakness, pain, or inflammation, this research helps explain why these symptoms occur—the same inflammatory processes damaging joints also affect muscle tissue. Understanding these shared biological mechanisms is important because many RA treatments target these exact pathways. While this study doesn't directly investigate acupuncture, the identified inflammatory pathways are ones that acupuncture may help modulate, as traditional Chinese medicine approaches RA and muscle disorders as interconnected conditions involving Qi stagnation and immune dysregulation. Acupuncture's anti-inflammatory effects may offer complementary support for managing both joint and muscle symptoms in RA patients. If you're considering acupuncture for rheumatoid arthritis and associated muscle problems, consult with a licensed acupuncturist who has experience treating autoimmune and rheumatological conditions.

This bibliometric analysis examined publications on rheumatoid arthritis (RA) and muscle disorder comorbidity from the Web of Science Core Collection (2015-2024) using VOSviewer, CiteSpace, and other analytical tools. The study identified 12 thematic research clusters, with myositis emerging as the primary research hotspot. GeneCards bioinformatics analysis revealed 359 shared genes between RA and myositis, with protein-protein interaction networks highlighting TNF, IL6, and IFNG as central mediators. KEGG enrichment analysis identified TNF, JAK-STAT, and IL-17 signaling pathways as critical mechanisms. The United States and China led publication output, with Karolinska Institutet producing the most research (50 publications). Clinical relevance: The identified inflammatory pathways represent therapeutic targets that may respond to acupuncture's immunomodulatory effects. Practitioners treating RA should assess for muscle involvement and consider these shared pathogenic mechanisms when developing treatment strategies, recognizing that addressing systemic inflammation may benefit both articular and muscular manifestations simultaneously.