Snorers develop high risk of injuries in the upper airways

Washington: People who snore heavily are at the risk of injuries in the upper airways caused by repeated vibrations, claimed a study.

This, in turn, can cause swallowing dysfunction and render individuals more vulnerable to developing severe condition obstructive sleep apnea.

The study published in the Journal of Respiratory Research focuses on the processes behind vibratory damage and healing of the upper airway tract. The data generated will help identify people at high risk of developing sleep apnea and to find novel treatment strategies.

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“Besides the disturbing effects, constant snoring can be a significant health risk. Nonetheless, there are indications that our research will guide towards early preventive measures and in the long term also enhance healing of damaged tissue caused by snoring,” said Per Stal, the research leader.

Researchers have shown that snorers and sleep apnea patients have neuromuscular injuries in the upper respiratory tract. The injuries can be seen at both the structural and molecular level.
Researchers could also observe a correlation between snoring and swallowing dysfunction as well as a relation between nerve damage and obstructive sleep apnea.

leep apnea is characterised by repeated collapse of the upper respiratory tract leading to respiratory arrest during sleep, which increases the risk of cardiovascular disease.

The studies show that people who constantly snore heavily and have sleep apnea displayed a loss of nerves and muscle mass in the soft palate.

Furthermore, the attempts by the body to heal damaged tissue were disturbed resulting in an abnormal muscle structure.

Another interesting finding was that muscle fibres in the soft palate lacked or had a disturbed organisation of certain structural proteins. These proteins stabilize the organelles of the muscle cell and support cellular structures related to energy production and muscle fibre contraction.

The researchers also found that a neurotransmitter that is normally associated with healing and regeneration of neurons was present in the muscle cells. This finding suggests that the body is trying to heal the injuries, but the recurrent snoring vibrations prevent proper healing. It becomes a vicious circle where snoring causes damage and at the same time disturb healing of injuries, which can lead to swallowing dysfunction and sleep apnea.

“Present findings have given us a clearer picture of the effects of snoring vibrations, which in turn increase the possibilities of finding ways to prevent damage and enhance the body’s healing processes,” said Farhan Shah, one of the researchers in the group.

The research group has now begun to experimentally grow muscles and nerve cells at the Laboratory of muscle biology.

The cultured cells will be exposed to harmful vibrations and oxygen desaturation, and the process of damage will be assessed. Thereafter, the cells will be treated with substances previously known for their role in repair and regenerations.

Researchers are hopeful that the experiments will generate extensive data that can contribute to new treatment strategies for vibration damage.


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