title: Transforming growth factor-beta1 and major depressive disorder with and without attempted suicide: preliminary study.
abstract: A substantial body of evidence indicates that dysregulation of the immune system is associated with suicidal behavior in major depressive disorder (MDD). Transforming growth factor (TGF)-beta1 is believed to be an important factor in regulating inflammatory responses and to have anti-inflammatory effects. We aimed to identify the role of TGF-beta1 on suicidal depression. The TGF-beta1 polymorphisms at codons 10 and 25 were analyzed in 122 suicidal MDD patients, 61 non-suicidal MDD patients, and 120 control subjects and, among them, in vitro TGF-beta1 productions were measured in 48 suicidal MDD patients, 47 non-suicidal MDD patients, and 91 control subjects. There was no genetic polymorphism at codon 25 and three genotypes at codon 10. No significant difference in the distributions of the TGF-beta1 genotypes was found among the three groups. The in vitro TGF-beta1 productions were significantly higher in suicidal MDD patients (844.3+/-329.7 pg/ml) and in non-suicidal MDD patients (853.0+/-439.7 pg/ml) than in controls (683.0+/-397.0 pg/ml) (P=0.01). In vitro TGF-beta1 productions were not significantly different among patients with any of the TGF-beta1 alleles or genotypes. Our findings suggest that in vitro TGF-beta1 productions play an important role on MDD, but we found no associations between TGF-beta1 and suicidal behavior.
authors.affiliation: Department of Psychiatry, College of Medicine, Korea University, Ansan Hospital, Kyunggi Province, Republic of Korea.
authors.forename: Hwa-Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Yong-Ku
authors.initials: YK
authors.lastname: Kim
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D003865:Major Depressive Disorder / Q000235:genetics / Q000378:metabolism / Q000523:psychology; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic / Q000235:genetics*; D011569:Psychiatric Status Rating Scales; D013406:Suicide, Attempted; D053773:Transforming Growth Factor beta1 / Q000235:genetics / Q000378:metabolism*
chemical_list: D053773:Transforming Growth Factor beta1