BACKGROUND/AIMS: Schizophrenia (SCH) and bipolar affective disorder (BPAD) are complex disorders with significant participation of genetic risk factors. Several lines of evidence point to the role of shared neurobiological mechanisms and common genetic background in SCH and BPAD. Immune disturbances have been suggested as contributing factor in the pathogenesis of both SCH and BPAD. The gene coding cytokine tumor necrosis factor (TNF) has been the object of a number of association studies in SCH, with ambiguous results. Only 3 such studies were performed in BPAD. The aim of our study was to perform a case-control association analysis of the TNF -308G/A polymorphism in a Polish sample of patients with SCH, BPAD and healthy controls. METHODS: We genotyped the TNF -308G/A polymorphism (rs1800629) by PCR-RFLP in 348 patients with SCH, 361 patients with BPAD and in 351 controls. RESULTS: We observed an association of the -308G allele with both SCH (p = 0.008) and BPAD (p = 0.039), and also with a positive family history in patients with SCH (p = 0.048) and BPAD (p = 0.027). For TNF genotypes, the association was only seen in SCH (p = 0.018). CONCLUSIONS: Our results may point to an association of the TNF -308G allele and -308G/G genotype with both SCH and BPAD, and to a relationship of the -308G allele with the risk of SCH and BPAD in patients with a positive family history. TNF could be potentially a susceptibility gene, shared between SCH and BPAD. Complex TNF gene studies--based on multiple single-nucleotide polymorphisms and involving haplotype analysis--are necessary for the clarification of currently contradictory findings. 2008 S. Karger AG, Basel.
BACKGROUND/AIMS: Schizophrenia (SCH) and bipolar affective disorder (BPAD) are complex disorders with significant participation of genetic risk factors. Several lines of evidence point to the role of shared neurobiological mechanisms and common genetic background in SCH and BPAD. Immune disturbances have been suggested as contributing factor in the pathogenesis of both SCH and BPAD. The gene coding cytokine tumor necrosis factor (TNF) has been the object of a number of association studies in SCH, with ambiguous results. Only 3 such studies were performed in BPAD. The aim of our study was to perform a case-control association analysis of the TNF -308G/A polymorphism in a Polish sample of patients with SCH, BPAD and healthy controls. METHODS: We genotyped the TNF -308G/A polymorphism (rs1800629) by PCR-RFLP in 348 patients with SCH, 361 patients with BPAD and in 351 controls. RESULTS: We observed an association of the -308G allele with both SCH (p = 0.008) and BPAD (p = 0.039), and also with a positive family history in patients with SCH (p = 0.048) and BPAD (p = 0.027). For TNF genotypes, the association was only seen in SCH (p = 0.018). CONCLUSIONS: Our results may point to an association of the TNF -308G allele and -308G/G genotype with both SCH and BPAD, and to a relationship of the -308G allele with the risk of SCH and BPAD in patients with a positive family history. TNF could be potentially a susceptibility gene, shared between SCH and BPAD. Complex TNF gene studies--based on multiple single-nucleotide polymorphisms and involving haplotype analysis--are necessary for the clarification of currently contradictory findings. 2008 S. Karger AG, Basel.
Authors: Meng Han Lv; Yun Long Tan; Shao Xiao Yan; Li Tian; Da Chun Chen; Shu Ping Tan; Zhi Ren Wang; Fu De Yang; Jin H Yoon; Giovana B Zunta-Soares; Jair C Soares; Xiang Yang Zhang Journal: Psychopharmacology (Berl) Date: 2014-06-24 Impact factor: 4.530
Authors: Joanna K Soczynska; Sidney H Kennedy; Hanna O Woldeyohannes; Samantha S Liauw; Mohammad Alsuwaidan; Christina Y Yim; Roger S McIntyre Journal: Neuromolecular Med Date: 2010-12-17 Impact factor: 3.843
Authors: Marija Bošković; Tomaž Vovk; Marko Saje; Katja Goričar; Vita Dolžan; Blanka Kores Plesničar; Iztok Grabnar Journal: Neurochem Res Date: 2012-12-02 Impact factor: 3.996
Authors: Fayaz Seifuddin; Pamela Belmonte Mahon; Jennifer Judy; Mehdi Pirooznia; Dubravka Jancic; Jacob Taylor; Fernando S Goes; James B Potash; Peter P Zandi Journal: Am J Med Genet B Neuropsychiatr Genet Date: 2012-05-09 Impact factor: 3.568
Authors: Yang Zhang; Tianlan Lu; Hao Yan; Yanyan Ruan; Lifang Wang; Dai Zhang; Weihua Yue; Lin Lu Journal: PLoS One Date: 2013-02-21 Impact factor: 3.240