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Association between norepinephrine transporter gene polymorphism and major depression.

Seung-Ho Ryu1, Seung-Hwan Lee, Heon-Jeong Lee

  • 1Department of Psychiatry, Konkuk University College of Medicine, Seoul, Korea.

Neuropsychobiology
|May 1, 2004
PubMed
Summary

This study found a genetic link between the norepinephrine transporter (NET) gene T-182C polymorphism and major depression in a Korean population. Lower frequency of the TT genotype was observed in patients with major depression.

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Area of Science:

  • Neuroscience
  • Genetics
  • Psychiatry

Background:

  • Major depression is linked to noradrenergic and serotonergic abnormalities.
  • Selective norepinephrine reuptake inhibitors like reboxetine are effective treatments.
  • Norepinephrine transporter (NET) dysfunction is a potential factor in major depression.

Purpose of the Study:

  • To investigate the association between the NET gene T-182C polymorphism and major depression.
  • To explore the NET gene as a candidate gene for major depression.

Main Methods:

  • A case-control study was conducted.
  • Genotyping of the NET gene T-182C polymorphism was performed.
  • A Korean sample of 112 major depression patients and 136 healthy controls was analyzed.

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Main Results:

  • A significantly lower frequency of the TT genotype was found in major depression patients compared to controls (p = 0.019).
  • The T-182C polymorphism showed a significant association when genotypes were grouped (TT vs. TC + CC).

Conclusions:

  • The T-182C polymorphism in the NET gene may be associated with major depression.
  • This finding contributes to understanding the genetic underpinnings of major depression.