@article{oai:soar-ir.repo.nii.ac.jp:00003689,
 author = {Sasayama,  Daimei and Hori,  Hiroaki and Teraishi,  Toshiya and Hattori,  Kotaro and Ota,  Miho and Iijima,  Yoshimi and Tatsumi,  Masahiko and Higuchi,  Teruhiko and Amano,  Naoji and Kunugi,  Hiroshi},
 journal = {BEHAVIORAL AND BRAIN FUNCTIONS},
 month = {Aug},
 note = {Background: Several lines of evidence have implicated the pro-inflammatory cytokine interleukin-1beta (IL-1 beta) in the etiology of schizophrenia. Although a number of genetic association studies have been reported, very few have systematically examined gene-wide tagging polymorphisms. Methods: A total of 533 patients with schizophrenia (302 males: mean age +/- standard deviation 43.4 +/- 13.0 years; 233 females; mean age 44.8 +/- 15.3 years) and 1136 healthy controls (388 males: mean age 44.6 +/- 17.3 years; 748 females; 46.3 +/- 15.6 years) were recruited for this study. All subjects were biologically unrelated Japanese individuals. Five tagging polymorphisms of IL-1 beta gene (rs2853550, rs1143634, rs1143633, rs1143630, rs16944) were examined for association with schizophrenia. Results: Significant difference in allele distribution was found between patients with schizophrenia and controls for rs1143633 (P = 0.0089). When the analysis was performed separately in each gender, significant difference between patients and controls in allele distribution of rs1143633 was observed in females (P = 0.0073). A trend towards association was also found between rs16944 and female patients with schizophrenia (P = 0.032). Conclusions: The present study shows the first evidence that the IL-1 beta gene polymorphism rs1143633 is associated with schizophrenia susceptibility in a Japanese population. The results suggest the possibility that the influence of IL-1 beta gene variations on susceptibility to schizophrenia may be greater in females than in males. Findings of the present study provide further support for the role of IL-1 beta in the etiology of schizophrenia., Article, BEHAVIORAL AND BRAIN FUNCTIONS. 7:35 (2011)},
 title = {Possible association between Interleukin-1beta gene and schizophrenia in a Japanese population},
 volume = {7},
 year = {2011}
}