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New insights into link between anti-cholesterol statin drugs and depression

Date:
July 7, 2010
Source:
American Chemical Society
Summary:
Scientists are reporting a possible explanation for the symptoms of anxiety and depression that occur in some patients taking the popular statin family of anti-cholesterol drugs, and reported by some individuals on low-cholesterol diets. These symptoms could result from long-term, low levels of cholesterol in the brain, the report suggests.

Scientists are reporting a possible explanation for the symptoms of anxiety and depression that occur in some patients taking the popular statin family of anti-cholesterol drugs, and reported by some individuals on low-cholesterol diets. These symptoms could result from long-term, low levels of cholesterol in the brain, the report suggests.

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The research appears in the American Chemical Society's weekly journal Biochemistry.

Amitabha Chattopadhyay and colleagues note in the study that statins work by blocking a key enzyme involved in the body's production of cholesterol. Some studies link the drugs to an increased risk of anxiety and depression, but the reasons are unclear. The scientists previously showed that maintaining normal cholesterol levels is important for the function of cell receptors for serotonin, a brain hormone that influences mood and behavior. But the long-term effect of cholesterol depletion on these receptors, which can occur in patients taking anti-cholesterol drugs, is unknown.

The scientists turned to the statin medication mevastatin to find out. In lab tests using human serotonin receptors expressed in animal cells, they showed that long-term use of the drug caused significant changes in the structure and function of serotonin cell receptors. Adding cholesterol to cells treated with mevastatin restored them to normal. The results represent the first report describing the effect of long-term cholesterol depletion on this type of cell receptor and suggest that chronic, low cholesterol levels in the brain might trigger anxiety and depression, the scientists say.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sandeep Shrivastava, Thomas J. Pucadyil, Yamuna Devi Paila, Sourav Ganguly, Amitabha Chattopadhyay. Chronic Cholesterol Depletion Using Statin Impairs the Function and Dynamics of Human Serotonin1AReceptors. Biochemistry, 2010; 49 (26): 5426 DOI: 10.1021/bi100276b

Cite This Page:

American Chemical Society. "New insights into link between anti-cholesterol statin drugs and depression." ScienceDaily. ScienceDaily, 7 July 2010. <www.sciencedaily.com/releases/2010/06/100630121130.htm>.
American Chemical Society. (2010, July 7). New insights into link between anti-cholesterol statin drugs and depression. ScienceDaily. Retrieved March 2, 2015 from www.sciencedaily.com/releases/2010/06/100630121130.htm
American Chemical Society. "New insights into link between anti-cholesterol statin drugs and depression." ScienceDaily. www.sciencedaily.com/releases/2010/06/100630121130.htm (accessed March 2, 2015).

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