Muscle abnormalities worsen after post-exertional malaise in long COVID

Brent Appelman, Braeden T Charlton, Richie P Goulding, Tom J Kerkhoff, Ellen A Breedveld, Wendy Noort, Carla Offringa, Frank W Bloemers, Michel van Weeghel, Bauke V Schomakers, Pedro Coelho, Jelle J Posthuma, Eleonora Aronica, W Joost Wiersinga, Michèle van Vugt, Rob C I Wüst

Research output: Contribution to JournalArticleAcademicpeer-review

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 languageEnglish
Article number17
Pages (from-to)17
JournalNature Communications
Volume15
Issue number1
DOIs
Publication statusPublished - 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].

FundersFunder number
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

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