Association study of NOS1 gene polymorphisms and schizophrenia / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the association between nitric oxide synthase 1 (NOS1) gene polymorphisms and schizophrenia.</p><p><b>METHODS</b>Twenty eight tag single nucleotide polymorphisms (SNPs) of NOS1 in 382 schizophrenic patients and 448 healthy individuals sampled from Chinese Han population were analyzed by a Illumina GoldenGate Genotyping Assay.</p><p><b>RESULTS</b>One SNP (rs1520811) was found to be associated with schizophrenia, which however becomes negative after Bonferroni correction (P>0.05). Further analysis has failed to identify any association between particular haplotypes and the disease.</p><p><b>CONCLUSION</b>Our results did not support a significant association between NOS1 gene polymorphisms and schizophrenia.</p>

Genome-wide association study with memory measures as a quantitative trait locus for schizophrenia / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the association between gene polymorphisms and memory function through a genome-wide association study (GWAS) of schizophrenia and control group. Memory cognition was used as a quantitative trait (QT).</p><p><b>METHODS</b>Ninty-eight subjects with chronic schizophrenia and 60 matched controls were genotyped with HumanHap660 Bead Array. The results were correlated with quantitative traits including memory and memory delay.</p><p><b>RESULTS</b>Five candidate genes, including RASGRF2 (rs401758, P = 8.03×10(-5)), PLCG2 (rs7185362, P= 4.54×10(-5)), LMO1 (rs484161, P=9.80×10(-7), CSMD1 (rs2469383, P= 2.77×10(-6)) and PRKG1 (rs7898516, P=6.94×10(-5)) were associated with memory cognition deficits.</p><p><b>CONCLUSION</b>Using memory cognition as a quantitative trait, this Genome- wide association study has identified 5 susceptibility loci. With their association with nervous system development, neuronal growth, axon guidance and plasticity, brain development, above loci may play a role in the development of memory dysfunction in schizophrenia.</p>