title: TNF-α and intPLA2 genes' polymorphism in anorexia nervosa.
abstract: OBJECTIVE
  The aim of this study was the assessment of -308G/A tumor necrosis factor (TNF)-α gene polymorphism and intPLA2 gene polymorphism in patients with anorexia nervosa (AN) and healthy controls.
  
  
  METHODS
  We studied 91 non-related patients with AN and 144 healthy women (blood donors and students). The mean age of women from study group was 18.22 years (SD ± 3.13 years) and from control group was 31.71 years (SD ± 8.22).
  
  
  METHODS
  Gene polymorphisms were studied with the use of polymerase chain reaction-restriction fragment length polymorphism method. TNF-α gene polymorphism consists of G/A substitution in -308 promoter region. IntPLA2 gene polymorphism is related to intron 1, in which restrictive region is found and recognized by BanI enzyme.
  
  
  RESULTS
  We did not obtain statistically significant differences in the frequency of genotypes and alleles of -308G/A TNF-α polymorphism between the study and control groups (genotypes: P = 0.106, alleles: P = 0.076). We did analogous analysis in the restrictive and bulimic subgroups. We did not observe statistically relevant differences in the frequency of genotypes (P = 0.700) and alleles (P = 0.305). We did not obtain statistically relevant difference in the frequency of genotypes and alleles of intPLA2 gene between the study group and controls (genotypes: P = 0.300, alleles: P = 0.331). We did analogous analysis in both subgroups of AN. We did not observe statistically relevant differences in the frequency of genotypes (P = 0.344) and alleles (P = 0.230).
  
  
  CONCLUSIONS
  There was no statistically relevant trend for the association between TNF-α polymorphism and AN. We did not find association between studied polymorphism of intPLA2 gene and risk of AN.
authors.affiliation: 1Department of Child and Adolescent Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Slopien
authors.affiliation: 1Department of Child and Adolescent Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Filip
authors.initials: F
authors.lastname: Rybakowski
authors.affiliation: 1Department of Child and Adolescent Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Monika
authors.initials: M
authors.lastname: Dmitrzak-Weglarz
authors.affiliation: 2Department of Adult Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Piotr
authors.initials: P
authors.lastname: Czerski
authors.affiliation: 2Department of Adult Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Hauser
authors.affiliation: 1Department of Child and Adolescent Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Renata
authors.initials: R
authors.lastname: Komorowska-Pietrzykowska
authors.affiliation: 1Department of Child and Adolescent Psychiatry, University of Medical Sciences, Poznañ, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Rajewski