Is low total cholesterol levels associated with suicide attempt in depressive patients?

• Published in: Annals of general psychiatry Vol. 16; no. 1; p. 20
• Main Authors: Messaoud, A, Mensi, R, Mrad, A, Mhalla, A, Azizi, I, Amemou, B, Trabelsi, I, Grissa, M H, Salem, N Haj, Chadly, A, Douki, W, Najjar, M F, Gaha, L
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 17.04.2017; BioMed Central; BMC
• Subjects: Biological marker; Cholesterol; Depression; Depression, Mental; Health aspects; High density lipoprotein; Lipids; Low density lipoprotein; Measurement; Mental depression; Physiological aspects; Plasma levels; Primary Research; Risk factors; Self destructive behavior; Suicidal behavior; Suicide; Suicides & suicide attempts; Triglycerides; Biological marker; Depression; Suicide; Cholesterol
• ISSN: 1744-859X; 1744-859X
• DOI: 10.1186/s12991-017-0144-4

Patients with major depressive disorder (MDD) have a high risk of suicide. Many pathophysiological factors involved in MDD and suicide such us a low cholesterol levels have been associated with MDD and increased vulnerability to suicide. In this study, we investigate the relation between lipid parameters and suicide risk in patients with MDD. Plasma levels of total cholesterol, triglycerides, and high-density lipoprotein cholesterol (HDL-c) and low-density lipoprotein cholesterol (LDL-c) were determined in 160 patients meeting the DSM-IV-TR criteria for MDD (110 patients without suicidal behavior and 52 suicidal attempters) and 151 healthy controls. A significant decrease in plasma cholesterol levels was observed in the group of suicidal depressive patients compared to those without suicidal behavior (  < 0.001). For the other lipid levels (triglycerides, HDL cholesterol, and LDL cholesterol), there were no significant differences between suicidal and non-suicidal patients. Our study showed a significant decrease in plasma cholesterol levels in suicidal patients. This result support the hypothesis of the association of low plasma cholesterol level and suicidal behavior in patients with major depressive disorder.