Why do muscles with this rare disease get weak?
Reduced mitochondrial fission and impaired energy metabolism in human primary skeletal muscle cells of Megaconial Congenital Muscular Dystrophy
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Muscle cells in this rare disease have broken mitochondria that can't split properly, so they get big and clump together near the nucleus instead of spreading out. They also make less energy, like a battery that won't charge well.
Surprising Findings
Mitochondria cluster near the nucleus instead of spreading through the muscle cell.
Scientists expected mitochondria to be scattered where energy is needed—like near muscle fibers—but in this disease, they’re all piled up near the center, like a battery bank stuck in a closet instead of distributed in every room.
Practical Takeaways
People with unexplained muscle weakness or rare neuromuscular disorders could ask for mitochondrial metabolite testing (ATP, Krebs intermediates) in muscle biopsies.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Muscle cells in this rare disease have broken mitochondria that can't split properly, so they get big and clump together near the nucleus instead of spreading out. They also make less energy, like a battery that won't charge well.
Surprising Findings
Mitochondria cluster near the nucleus instead of spreading through the muscle cell.
Scientists expected mitochondria to be scattered where energy is needed—like near muscle fibers—but in this disease, they’re all piled up near the center, like a battery bank stuck in a closet instead of distributed in every room.
Practical Takeaways
People with unexplained muscle weakness or rare neuromuscular disorders could ask for mitochondrial metabolite testing (ATP, Krebs intermediates) in muscle biopsies.
Publication
Journal
Scientific Reports
Year
2021
Authors
Evrim Aksu-Menges, C. C. Eylem, E. Nemutlu, M. Gizer, P. Korkusuz, H. Topaloğlu, B. Talim, B. Balci-Hayta
Related Content
Claims (5)
In a rare muscle disease, muscle cells have bigger, rounder mitochondria and less of the proteins that normally split them apart, which might mess up how they work.
The muscle cells from this rare disease patient make less of the energy molecules (like ATP) and have slower energy production cycles, meaning their muscles probably don't have enough fuel to work properly.
In this disease, the proteins that split mitochondria are low, but the ones that glue them together are normal—so the problem isn't that everything is out of balance, just that splitting is broken.
Only the muscle cells in the dish had the big, weird mitochondria—even the nearby skin-like cells looked normal, meaning the problem is unique to muscle tissue.
In this disease, the energy factories (mitochondria) in muscle cells are all piled up near the center (nucleus) instead of spread out where they’re needed, and this same pattern is seen in actual patient muscle tissue.