ALINE SANTOS SAMPAIO
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LIM/21 - Laboratório de Neuroimagem em Psiquiatria, Hospital das Clínicas, Faculdade de Medicina
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article 8 Citação(ões) na Scopus The role of the VNTR functional polymorphism of the promoter region of the MAOA gene on psychiatric disorders(2011) NISHIOKA, Silvia A.; PERIN, Eduardo Aliende; SAMPAIO, Aline Santos; CORDEIRO, Quirino; CAPPI, Carolina; MASTROROSA, Rosana Savio; MORAIS, Ivanil A.; REIS, Viviane Neri de Souza; ROSARIO, Maria Conceicao do; HOUNIE, Ana GabrielaIntroduction: A functional variable number of tandem repeats (VNTR) polymorphism of the promoter region of the monoamine oxidase A (MAOA) gene has been described and many studies have investigated the association of this polymorphism with human behaviors, as well as with several psychiatric disorders. Objective: This study aimed to review the literature on the role of the VNTR functional polymorphism of the promoter region of the MAOA gene on the modulation of human behavior for the development of psychiatric disorders. Method: Searches on the Medline, Embase, Web of Science and PsycInfo databases were performed including works from January 1998 to June 2009. The words used were: ""MAOA and human behavior"" and ""MAOA and psychiatry"". Results: Several studies were found (N = 3,873). After the selection process, 109 papers were included in the review. There was found an association of MAOA low activity alleles with antisocial personality disorder, conduct disorder, ADHD, pathological gambling, and substance abuse. High activity alleles were associated with neuroticism, anorexia nervosa and depression and anxiety disorders. There was no association between the MAOA polymorphisms and bipolar disorder and schizophrenia. Discussion: The main findings, summarized in this paper, support a role of MAOA VNTR polymorphism in some psychiatric disorders although some divergences were found due to methodological difficulties in genetic studies. In general, the studies associated the low activity alleles with impulsivity and aggressive behavior (""hyperactive behaviors""), and the high activity alleles of the gene with ""hypoactive behaviors"", such as depression and anxiety, which demonstrates a modulation of the MAOA enzyme in ""hyperactive"" and ""hypoactive"" disorders.- Estudos de associação genética no transtorno obsessivo-compulsivo(2013) SAMPAIO, Aline Santos; LINS, Rita Marcia Pacheco; DALTRO-OLIVEIRA, Renato; QUARANTINI, Lucas de Castro; ROSARIO, Maria Conceicao do; MIGUEL, Euripedes Constantino; HOUNIE, Ana GabrielaBackground: Obsessive-compulsive disorder (OCD) segregates in families. It follows a complex model of genetic transmission, which involves the influence of several small effect genes interacting with the environment. Methods: A systematic review of genetic association studies in OCD was performed. Articles published until 2012 were searched in the databases PubMed, Embase and SciELO using the terms of MeSH and its associates or synonyms for ""obsessive-compulsive disorder"", ""gene"" and ""genetic association studies"". Results: We selected 105 papers and described their main results grouped as genes related to: serotonin, dopamine, glutamate, GABA, white matter, immune system, hormones and other genes. Conclusion: There is high variability between findings of association studies among the several candidate genes studied in OCD. Glutamate-related genes are promising candidates for OCD, but there is no conclusive association between any of the candidate genes studied and OCD. Association studies with large sample size, evaluation of more homogeneous subgroups of phenotype and meta-analyses are still needed.