Format

Send to

Choose Destination
See comment in PubMed Commons below
J Affect Disord. 2011 Mar;129(1-3):359-63. doi: 10.1016/j.jad.2010.08.021. Epub 2010 Sep 21.

Reduced expression of fatty acid biosynthesis genes in the prefrontal cortex of patients with major depressive disorder.

Author information

  • 1Department of Psychiatry, Lipidomics Research Program, University of Cincinnati College of Medicine, Cincinnati, OH 45219, United States. robert.mcnamara@uc.edu

Abstract

BACKGROUND:

Major depressive disorder (MDD) is associated with central and peripheral deficits in long-chain polyunsaturated fatty acids (LC-PUFA), particularly those in the omega-3 fatty acid family. However, the etiology of these deficits remains poorly understood, and there is currently little known about the expression of genes that mediate fatty acid biosynthesis in MDD patients.

METHODS:

The expression of FADS1 (Δ5 desaturase), FADS2 (Δ6 desaturase), HELO1 [ELOVL5] (elongase), PEX19 (peroxisome), and SCD (stearoyl-CoA desaturase [Δ9 desaturase]) was determined in the postmortem prefrontal cortex of MDD patients (n=10) and non-psychiatric controls (n=10) by real-time reverse transcriptase polymerase chain reaction (RT-PCR).

RESULTS:

After correcting for multiple comparisons, FADS1 mRNA expression was significantly lower in MDD patients relative to controls (-27%, p=0.009), and there were trends for lower expression of FADS2 (-30%, p=0.07), HELO1 (-37%, p=0.02), and SCD (-43%, p=0.02). PEX19 mRNA expression did not differ between controls and MDD patients (-2%, p=0.92). There were no significant gender effects, and relative reductions in FADS1, HELO1, and SCD expression were greater in patients that did not commit suicide compared with patients that did commit suicide.

LIMITATIONS:

The sample size was small, and all MDD patients were receiving antidepressant medications.

CONCLUSIONS:

Principal genes involved in LC-PUFA and monounsaturated fatty acid biosynthesis are down-regulated in the postmortem prefrontal cortex of MDD patients. Additional studies are needed to replicate and extend these findings in a larger sample that includes antidepressant-free MDD patients.

PMID:
20863572
PMCID:
PMC3023006
DOI:
10.1016/j.jad.2010.08.021
[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science Icon for PubMed Central
    Loading ...
    Support Center