A sex education program for teachers of preschool children: a quasi-experimental study in Iran.

Background: Sex education is an important educational dimension. Together with families, teachers play a significant role in providing sex education to children. However, in most cases, they do not have enough information on this topic.

Analysis of glutathione S-transferase genes polymorphisms and the risk of schizophrenia in a sample of Iranian population.

Glutathione S-transferases (GSTs) are major intracellular antioxidants, which, impaired in their function, are involved in the progress of schizophrenia (SCZ). The aim of this case-control study was to investigate the association between the polymorphism of glutathione S-transferases M1 (GSTM1), T1 (GSTT1), the glutathione S-transferase P1 gene (GSTP1) and SCZ. We isolated genomic DNA from peripheral blood of 93 individuals with SCZ and 99 healthy control subjects' genotypes analyzing them for GSTM1, GSTT1 and GSTP1 using polymerase chain reaction.