A study suggests snoring is not just a symptom of OSA but may actively contribute to the sleep disorder.
Key takeaways:
- Researchers developed a laboratory model to mimic snoring vibrations in muscle cells, linking the results to patient samples.
- Findings indicate that repeated vibrations impair cellular energy metabolism and weaken upper airway muscles, making them more likely to collapse.
- The study highlights a potential mechanism where snoring actively contributes to obstructive sleep apnea progression rather than acting solely as a symptom.
Snoring is widely recognized as a primary symptom of obstructive sleep apnea (OSA), but new research indicates it may also play a direct role in the development of the disease.
Researchers at Umeå University have demonstrated that the vibrations caused by snoring affect how muscle cells produce and manage energy. This disruption can weaken the muscles of the upper airway, increasing their likelihood of collapsing during sleep.
“Snoring has long been regarded as a symptom of obstructive sleep apnea, but our findings suggest that the vibrations themselves may contribute to the disease process by damaging muscle tissue and impairing cellular energy metabolism,” says Farhan Shah, PhD, associate professor at the department of medical and translational biology at Umeå University, in a release.
A key aspect of the study involved linking findings from patient samples to a newly developed laboratory model designed to mimic snoring vibrations in muscle cells. Using this model, researchers observed how repeated vibrations impact the cells’ ability to sense mechanical load, regulate energy production, and maintain normal cellular function.
The research was conducted at the university’s Laboratory for Vibration Biology, a research environment established with support from the Kempe Foundations that investigates how physical forces influence cellular function, tissue adaptation, and disease. The experimental vibration model was developed and validated by postdoctoral researcher Yucheng Qian alongside a technical team.
Understanding cellular responses to mechanical vibration could also have implications for other vibration-related conditions. The research group investigates how mechanical stimuli and disease states influence muscle health across a range of conditions, including cancer cachexia, aging, prolonged immobilization, and occupational vibration exposure, such as hand-arm vibration syndrome.
The study, “Mitochondrial dysfunction in muscle cells induced by snoring vibrations,” was published in the journal Mitochondrion.
