Abstract
A subgroup of patients infected with SARS-CoV-2 remain symptomatic over three months after infection. A distinctive symptom of patients with long COVID is post-exertional malaise, which is associated with a worsening of fatigue- and pain-related symptoms after acute mental or physical exercise, but its underlying pathophysiology is unclear. With this longitudinal case-control study (NCT05225688), we provide new insights into the pathophysiology of post-exertional malaise in patients with long COVID. We show that skeletal muscle structure is associated with a lower exercise capacity in patients, and local and systemic metabolic disturbances, severe exercise-induced myopathy and tissue infiltration of amyloid-containing deposits in skeletal muscles of patients with long COVID worsen after induction of post-exertional malaise. This study highlights novel pathways that help to understand the pathophysiology of post-exertional malaise in patients suffering from long COVID and other post-infectious diseases.
Original language | English |
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Article number | 17 |
Pages (from-to) | 17 |
Journal | Nature Communications |
Volume | 15 |
Issue number | 1 |
DOIs | |
Publication status | Published - 4 Jan 2024 |
Bibliographical note
© 2024. The Author(s).Funding
We particularly thank all participants for their time and dedication in participating in this study. We also would like to thank all staff of the post-COVID outpatient clinic of the Amsterdam UMC, in particular, Drs. Mooij-Kalverda and Huismans, for their support during this study. We also acknowledge the help of Dr. Eric Voorn in the data acquisition of the physical activity measurements, Onno van Driel in the analysis of the fiber type distribution, and Jos de Koning in supporting exercise data collection. This study was funded by own funding, the Patient-Led Research Collaborative for Long COVID (Grant ID: C1, [MvV]), the Talud Foundation for the Amsterdam UMC Corona Research Fund [WWJ], AMC Foundation [MvV], VU Foundation [RCIW], ZonMw Onderzoeksprogramma ME/CVS [RCIW], and the 2022 Ramsay Grant Program [RCIW].
Funders | Funder number |
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Patient-Led Research Collaborative for Long COVID | |
RCIW | |
Talud Foundation | |
ZonMw Onderzoeksprogramma ME | |
V Foundation for Cancer Research | |
Center for Visual Science | |
ACE Foundation |
Keywords
- Humans
- Post-Acute COVID-19 Syndrome
- SARS-CoV-2
- Case-Control Studies
- COVID-19/complications
- Fatigue/etiology
- Musculoskeletal Abnormalities
- Muscle, Skeletal
- Pain
- Plaque, Amyloid