Scientists have uncovered the mechanism explaining muscle pain from statins

• Statins can cause muscle pain due to calcium leakage
• The study revealed the molecular mechanism of these side effects
• New data may help in the development of safer statins

The mechanism of action of statins and their side effects

Statins are important medications for the prevention of cardiovascular diseases, lowering cholesterol levels and saving millions of lives. However, despite their effectiveness, some patients experience undesirable side effects such as muscle pain and weakness. In rare cases, serious complications may arise, including muscle tissue breakdown, which can lead to kidney failure. These issues raise concerns among both patients and doctors, highlighting the need for further research in this area.

A recent study conducted by scientists at the University of British Columbia in collaboration with the University of Wisconsin-Madison revealed a molecular mechanism explaining why statins may cause muscle pain. The results were published in the journal Nature Communications. The researchers used cryo-electron microscopy to study the interaction of statins with ryanodine receptors, which regulate calcium movement in muscle cells. This discovery could lead to the development of safer statins that retain their cholesterol-lowering properties but are less harmful to muscle tissue.

The study focused on atorvastatin, one of the most commonly used statins. Researchers found that statins can disrupt the normal functioning of the ryanodine receptor by keeping the channel open and allowing calcium to leak uncontrollably into areas where its level should be strictly regulated. This leads to muscle tissue damage and explains why some patients experience muscle pain or even serious complications.

Statins and their impact on health

The study found that three statin molecules interact with the calcium channel in a specific way. The first molecule binds to the channel when it is closed, increasing the likelihood of it opening. Then, two additional molecules occupy a special pocket in the protein and keep the channel open, leading to calcium leakage. This discovery has been an important step forward in understanding how statins activate this channel and how unwanted effects can be avoided.

Dr. Steven Molinarolo, the lead author of the study, noted: "We were able to see, almost atom by atom, how statins bind to this channel." This understanding could help drug developers create statin medications that do not interact with muscle tissue, thereby reducing the risk of side effects. Given that over 200 million people worldwide take statins, this discovery is of immense significance for public health.

Although serious muscle damage occurs in only a small portion of patients, less severe issues such as soreness, weakness, and fatigue are much more common. These symptoms can be so pronounced that some patients stop taking statins, which can lead to a loss of important protection against cardiovascular diseases. New data may help create more tolerable medications, allowing more patients to continue treatment.

Molecular mechanism of muscle pain

To achieve such a level of understanding, scientists required high-precision visualization methods. Working with high-resolution cryo-electron microscopy, the team was able to accurately observe how statin molecules interact with muscle protein. These structural data link a long-standing drug safety issue with a specific molecular process, providing valuable information for future drug development.

Dr. Philip Van Petegem, the senior author of the study, emphasized: "Statins have been the cornerstone of cardiology care for decades. Our goal is to make them even safer so that patients can benefit without fear of serious side effects." This research opens new horizons for the development of statins that will be less harmful to muscles, which could significantly improve patients' quality of life.

Despite the promising results, further research and drug development are necessary before these discoveries can be implemented in new medications. Scientists hope that their work will lead to the creation of statins that are not only effective but also safe for patients, allowing them to continue treatment without fear of side effects.

Prospects for developing safer statins

In conclusion, the discovery of the molecular mechanism explaining muscle pain from statins is an important step in pharmacology. It may lead to the creation of safer statins that retain their cholesterol-lowering properties but are less harmful to muscle tissue. This discovery could change the approach to treating cardiovascular diseases and improve the quality of life for millions of people who rely on statins.

Thus, the results of the study emphasize the importance of further research in the field of drug safety and their interactions with the body. Understanding the molecular mechanisms of statin action may aid in the development of new therapies that are more effective and less risky for patients. This discovery may also serve as a foundation for creating new classes of drugs aimed at lowering cholesterol without negatively impacting muscles.

Ultimately, the work of scientists from the University of British Columbia and the University of Wisconsin-Madison opens new horizons in the fields of cardiology and pharmacology. Given that cardiovascular diseases remain one of the leading causes of mortality worldwide, the development of safer statins could be an important step towards improving public health and reducing the incidence of cardiovascular diseases.

Source: ScienceDaily