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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Cholesterol-lowering therapy evokes time-limited changes in serotonergic transmission.

Abstract Source:

Psychiatry Res. 2005 Feb 28 ;133(2-3):197-203. PMID: 15740995

Abstract Author(s):

Jan Vevera, Zdenĕk Fisar, Tomás Kvasnicka, Hanus Zdenek, Lucie Stárková, Richard Ceska, Hana Papezová

Article Affiliation:

Psychiatric Clinic, First Faculty of Medicine of Charles University, Ke Karlovu 11, 120 00 Prague, Czech Republic. janvevera@centrum.cz

Abstract:

A number of studies have reported an increased risk for violent deaths and depression in subjects with reduced serum cholesterol concentrations. Links with hypothesized impairment of serotonin neurotransmission have not been satisfactorily tested. In this investigation, the serum and membrane cholesterol, microviscosity of erythrocyte membranes, platelet serotonin uptake, and clinical parameters were determined during pharmacotherapy of 17 hypercholesterolemic patients. A significant decrease in serum cholesterol and a nonsignificant decrease in membrane cholesterol concentration were found after 2 months of simvastatin therapy. Serotonin transporter (SERT) activity was significantly increased following 1 month of simvastatin; the tendency to decrease the initial increase in SERT activity was evident following 2 months of therapy. Both membrane cholesterol and SERT activity returned to pre-treatment levels after more than 1 year of therapy. Microviscosity of plasma membranes, impulsivity, empathy, adventure, sensation seeking, and depressed mood were not markedly changed. These data indicate that long-term therapy has different effects on serotonin transmission from short-term (1- to 2-month) therapy. A significant increase in SERT activity was detected only during the first month of simvastatin therapy. This finding suggests that within this period some patients could be vulnerable to depression, violence, or suicide.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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