Association between depression and the Gln460Arg polymorphism of P2RX7 gene: A dimensional approach

Krisztina Hejjas, Anna Szekely, Eszter Domotor, Zsuzsa Halmai, Gabriella Balogh, Boglarka Schilling, Andrea Sarosi, Gabor Faludi, Maria Sasvari-Szekely, Zsofia Nemoda

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

The P2RX7 gene (coding for P2X7 purinergic receptor) has been suggested as a novel candidate gene for major depressive disorder (MDD) and bipolar disorder (BPD). The proposed risk allele (G-allele) of the rs2230912 polymorphism results in an amino acid change at the 460th position, marking this genetic variation a possibly functional one. Here we present a case-control analysis of 171 patients diagnosed with MDD or BPD and 178 controls, as well as a dimensional approach using the Hospital Anxietyand Depression Scale (HADS) for studying the Gln460Arg polymorphism of the P2RX7 gene as a genetic risk factor in depression. While case-control analysis did not show significant difference between the groups, a significant association was found between the P2RX7 polymorphism and the HADS scales in the clinical group (MANOVA P = 0.001). Both anxiety and depression scores increased as the number of G-allele increased in the genotype groups (ANOVA for HADS-anxiety: P = 0.01, HADS-depression: P < 0.001). A significant interaction of clinical status and the P2RX7 polymorphism was also found for the depression scale (MANOVA P = 0.025, subsequent ANOVA for anxiety: P = 0.252; depression: P = 0.002). Whereas patients with G-allele-present genotypes showed more elevated depression scores, level of depression in the control group was not affected by the P2RX7 genotype. In conclusion, case-control analysis did not reveal significant results, but using a symptom severity scale we could support the association between depressive disorder and the G-allele of the Gln460Arg polymorphism in the P2RX7 gene.

Original languageEnglish
Pages (from-to)295-299
Number of pages5
JournalAmerican Journal of Medical Genetics, Part B: Neuropsychiatric Genetics
Volume150
Issue number2
DOIs
Publication statusPublished - Mar 5 2009

Keywords

  • Depressive symptoms
  • Hospital Anxiety and Depression Scale
  • P2X7
  • Purinergic receptor

ASJC Scopus subject areas

  • Genetics(clinical)
  • Psychiatry and Mental health
  • Cellular and Molecular Neuroscience

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