Scientists have identified a potential alternative to statins for managing high cholesterol levels. They have discovered how elevated cholesterol levels weaken the liver’s natural defenses and have identified a new medication that could counteract this process.
Heart disease, primarily linked to cholesterol, remains a leading cause of death worldwide. While statins like Atorvastatin (Lipitor) and Simvastatin (Zocor) are commonly prescribed in the UK to control high cholesterol and prevent heart disease, some patients struggle to reach safe cholesterol levels or experience side effects. Alternative statins like Fluvastatin, Rosuvastatin, and Pravastatin are also available.
Although statins like Atorvastatin can cause muscle discomfort in some patients, severe muscle damage is rare. Recent research from American scientists at the University of California San Diego School of Medicine has uncovered a hidden biological mechanism that explains how diets high in cholesterol hinder the body’s ability to eliminate harmful LDL cholesterol from the bloodstream. The study has identified a drug candidate that could potentially address this issue.
The study revealed that high levels of dietary cholesterol activate a protein called Ral, which depletes LDL receptors responsible for removing cholesterol from the blood. By blocking an enzyme called cathepsin A (CTSA) with a small molecule inhibitor, researchers were able to stabilize LDL receptors and significantly reduce circulating LDL cholesterol levels in mice. This discovery opens up a new pathway for developing cholesterol-lowering drugs.
The investigational drug, originally intended for heart failure treatment, has already passed safety assessments in a Phase 1 clinical trial. Researchers believe it is now ready for a Phase 2 trial focusing on high cholesterol. This promising development could potentially offer a new treatment option to patients sooner than expected.
