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Statin-associated autoimmune myopathy (SAAM), also known as anti-HMGCR myopathy, is a very rare form of muscle damage caused by the immune system in people who take statin medications. [1] However, there are cases of SAAM in patients who have not taken statin medication, and this can be explained by the exposure to natural sources of statin ...
Common types of myopathy due to statins include myalgia, myositis, and rhabdomyolysis. Statins induce myopathy by inhibiting protein synthesis within the muscle. [6] Statin therapy tends to not show any histopathological differences, and thus a biopsy does not reveal too much about the damage. Often, the damage is found within the mitochondria.
Rhabdomyolysis (shortened as rhabdo) is a condition in which damaged skeletal muscle breaks down rapidly, often due to high intensity exercise over a short period. [6] [4] [5] Symptoms may include muscle pains, weakness, vomiting, and confusion. [3] [4] There may be tea-colored urine or an irregular heartbeat.
Part of the power of statins lies in the fact that they cause few side effects. “Generally, about 90 out of 100 people have no trouble with a stain,” says Dr. Blumenthal.
A 2010 published meta-analysis found for every 255 patients taking a statin for 4 years, one additional case of diabetes would occur whilst preventing 5.4 major coronary events. [27] Some drugs interact with statins in a way that increases the risk of muscle injury called myopathy, characterized by unexplained muscle weakness or pain.
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Statin-induced hepatotoxicity can cause autoimmune hepatitis and an elevation in serum levels of hepatic enzymes such as alanine aminotransferase, impairing liver function. [20] Myotoxicity is commonly presented with statin-associated muscle symptoms (SAMS), which include myalgia and myositis. [21]
It can often be treated by drugs like corticosteroids or immunosuppressants. (M33.2) Polymyositis produces muscle weakness. It can often be treated by drugs like corticosteroids or immunosuppressants. Inclusion body myositis is a slowly progressive disease that produces weakness of hand grip and straightening of the knees. No effective ...