Muscle sodium content in patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

Journal of Translational Medicine

Research

Titus Kuehne¹  Marcus Kelm²  Klaus Wirth³  Carmen Scheibenbogen⁴  Elisabeth Petter⁵  Peter Linz⁶  Christian Stehning⁷ 

[1] Institute of Computer-Assisted Cardiovascular Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany;Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany;Institute of Computer-Assisted Cardiovascular Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany;Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany;Berlin Institute of Health (BIH), Berlin, Germany;German Centre for Cardiovascular Research (DZHK), Partner Site, Berlin, Germany;Institute of General Pharmacology and Toxicology, University Hospital Frankfurt am Main, Goethe-University, Theodor-Stern Kai 7, Frankfurt am Main, Germany;Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Campus Virchow, Berlin, Germany;Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Campus Virchow, Berlin, Germany;Institute of Computer-Assisted Cardiovascular Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany;Department of Congenital Heart Disease, German Heart Center Berlin, Berlin, Germany;Institute of Radiology, Friedrich‐Alexander‐Universität Erlangen‐Nürnberg (FAU), University Hospital Erlangen, Erlangen, Germany;Philips Healthcare, Hamburg, Germany;

关键词: Chronic Fatigue Syndrome;    Sodium;    Magnetic Resonance Imaging;    Muscle, skeletal;    Myalgia;    Exercise;    Sodium–potassium-exchanging ATPase;    Sodium–hydrogen exchangers;   

DOI  :  10.1186/s12967-022-03616-z

 received in 2022-05-13, accepted in 2022-08-25,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundMuscle fatigue and pain are key symptoms of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). Although the pathophysiology is not yet fully understood, there is ample evidence for hypoperfusion which may result in electrolyte imbalance and sodium overload in muscles. Therefore, the aim of this study was to assess levels of sodium content in muscles of patients with ME/CFS and to compare these to healthy controls.MethodsSix female patients with ME/CFS and six age, BMI and sex matched controls underwent 23Na-MRI of the left lower leg using a clinical 3T MR scanner before and after 3 min of plantar flexion exercise. Sodium reference phantoms with solutions of 10, 20, 30 and 40 mmol/L NaCl were used for quantification. Muscle sodium content over 40 min was measured using adedicated plugin in the open-source DICOM viewer Horos. Handgrip strength was measured and correlated with sodium content.ResultsBaseline tissue sodium content was higher in all 5 lower leg muscle compartments in ME/CFS compared to controls. Within the anterior extensor muscle compartment, the highest difference in baseline muscle sodium content between ME/CFS and controls was found (mean ± SD; 12.20 ± 1.66 mM in ME/CFS versus 9.38 ± 0.71 mM in controls, p = 0.0034). Directly after exercise, tissue sodium content increased in gastrocnemius and triceps surae muscles with + 30% in ME/CFS (p = 0.0005) and + 24% in controls (p = 0.0007) in the medial gastrocnemius muscle but not in the extensor muscles which were not exercised. Compared to baseline, the increase of sodium content in medial gastrocnemius muscle was stronger in ME/CFS than in controls with + 30% versus + 17% to baseline at 12 min (p = 0.0326) and + 29% versus + 16% to baseline at 15 min (p = 0.0265). Patients had reduced average handgrip strength which was associated with increased average muscle tissue sodium content (p = 0.0319, R2 = 0.3832).ConclusionMuscle sodium content before and after exercise was higher in ME/CFS than in healthy controls. Furthermore, our findings indicate an inverse correlation between muscle sodium content and handgrip strength. These findings provide evidence that sodium overload may play a role in the pathophysiology of ME/CFS and may allow for potential therapeutic targeting.

【 授权许可】

CC BY   
© The Author(s) 2022

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