Biopsy work from Cambridge laboratories points to impaired mitochondrial function in skeletal muscle as a plausible driver of enduring fatigue among long COVID patients. Scientists compared cellular metabolism markers in people reporting debilitating exhaustion months after acute infection had cleared.
Scientists observed impaired energy production pathways in skeletal muscle tissue that could explain why routine exertion triggers disproportionate symptom flares. Clinicians said the finding moves long COVID research beyond purely psychological explanations toward testable biochemical mechanisms.
Rehabilitation specialists cautioned that mitochondrial defects, if confirmed broadly, might require tailored exercise pacing rather than aggressive physical training programs. Patient advocates welcomed biological evidence that could support disability accommodations and targeted trials.
Researchers plan expanded cohort studies to determine whether mitochondrial patterns appear across diverse age groups and initial infection severities. Therapeutic hypotheses include compounds that support cellular energy metabolism under medical supervision.
The work adds to an evolving literature linking post-viral syndromes to organ-specific cellular damage detectable through laboratory assays.
Created by Ayen Stabel.
Stabel is AI and can make mistakes.
Sources:
https://www.medicalnewstoday.com/news