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| Registros recuperados: 10 | |
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| Fam,Bibiana S.O.; Paré,Pamela; Felkl,Aline B.; Vargas-Pinilla,Pedro; Paixão-Côrtes,Vanessa R.; Viscardi,Lucas Henriques; Bortolini,Maria Cátira. |
| Abstract Domestication is of unquestionable importance to the technological revolution that has given rise to modern human societies. In this study, we analyzed the DNA and protein sequences of six genes of the oxytocin and arginine vasopressin systems (OXT-OXTR; AVP-AVPR1a, AVPR1b and AVPR2) in 40 placental mammals. These systems play an important role in the control of physiology and behavior. According to our analyses, neutrality does not explain the pattern of molecular evolution found in some of these genes. We observed specific sites under positive selection in AVPR1b (ω = 1.429, p = 0.001) and AVPR2 (ω= 1.49, p = 0.001), suggesting that they could be involved in behavior and physiological changes, including those related to the domestication... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oxytocin and receptors; Vasopressin and receptors; Animal domestication; Molecular evolution; Positive selection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200235 |
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| Mota,Nina Roth; Araujo-Jnr,Eli Vieira; Paixão-Côrtes,Vanessa Rodrigues; Bortolini,Maria Cátira; Bau,Claiton Henrique Dotto. |
| Genetic studies have long suggested the important role of the DRD2 gene in psychiatric disorders and behavior. Further research has shown a conjoined effect of genes in the Chr11q22-23 region, which includes the NCAM1, TTC12, ANKK1 and DRD2 genes, or NTAD cluster. Despite a growing need to unravel the role of this cluster, few studies have taken into account interspecies and evolutionary approaches. This study shows that behaviorally relevant SNPs from the NTAD cluster, such as rs1800497 (Taq1A) and rs6277, are ancient polymorphisms that date back to the common ancestor between modern humans and Neanderthals/Denisovans. Conserved synteny and neighborhood indicate the NTAD cluster seems to have been established at least 400 million years ago, when the first... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NTAD cluster; Taq1A SNP; Shared synteny; Co-regulation; Psychiatric genetics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600004 |
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| Viscardi,Lucas Henriques; Paixão-Côrtes,Vanessa Rodrigues; Comas,David; Salzano,Francisco Mauro; Rovaris,Diego; Bau,Claiton Dotto; Amorim,Carlos Eduardo G.; Bortolini,Maria Cátira. |
| Abstract Hominin evolution is characterized by adaptive solutions often rooted in behavioral and cognitive changes. If balancing selection had an important and long-lasting impact on the evolution of these traits, it can be hypothesized that genes associated with them should carry an excess of shared polymorphisms (trans- SNPs) across recent Homo species. In this study, we investigate the role of balancing selection in human evolution using available exomes from modern (Homo sapiens) and archaic humans (H. neanderthalensis and Denisovan) for an excess of trans-SNP in two gene sets: one associated with the immune system (IMMS) and another one with behavioral system (BEHS). We identified a significant excess of trans-SNPs in IMMS (N=547), of which six of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human behavior; Evolution; Balancing selection; Immune genes; Behavioral genes. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000100067 |
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| Paixão-Côrtes,Vanessa Rodrigues; Viscardi,Lucas Henrique; Salzano,Francisco Mauro; Hünemeier,Tábita; Bortolini,Maria Cátira. |
| After a brief review of the most recent findings in the study of human evolution, an extensive comparison of the complete genomes of our nearest relative, the chimpanzee (Pan troglodytes), of extant Homo sapiens, archaic Homo neanderthalensis and the Denisova specimen were made. The focus was on non-synonymous mutations, which consequently had an impact on protein levels and these changes were classified according to degree of effect. A total of 10,447 non-synonymous substitutions were found in which the derived allele is fixed or nearly fixed in humans as compared to chimpanzee. Their most frequent location was on chromosome 21. Their presence was then searched in the two archaic genomes. Mutations in 381 genes would imply radical amino acid changes, with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human evolution; Comparative genomics; Positive selection; Neanderthal; Denisova. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600003 |
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| Bortolini,Maria Cátira; Thomas,Mark G.; Chikhi,Lourdes; Aguilar,Juan A.; Castro-De-Guerra,Dinorah; Salzano,Francisco M.; Ruiz-Linares,Andres. |
| Four biallelic and six multiallelic Y-chromosome polymorphisms were investigated in 59 Gran Canarian, 60 North African Berber and 46 Spanish subjects. These new data were merged with equivalent literature information to obtain the parental Y-chrosomomal contribution in Gran Canarians, Colombians, and Venezuelans. The results were then compared, for Gran Canarians and Colombians, to those derived from autosomal and mtDNA. In both groups, the Spanish Y-chromosome contribution was much more marked than that estimated using mtDNA. This analysis showed a usual trend in the Spanish Colonial history, characterized by a demographic collapse of the aboriginal population, but with considerable introgression of genes through native women. In accordance to D.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gran Canaria; Y-chromosome polymorphisms; Admixture. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000100001 |
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| Paskulin,Diego d'Avila; Paixão-Côrtes,Vanessa Rodrigues; Hainaut,Pierre; Bortolini,Maria Cátira; Ashton-Prolla,Patricia. |
| The TP53 gene, first described in 1979, was identified as a tumor suppressor gene in 1989, when it became clear that its product, the p53 nuclear phosphoprotein, was frequently inactivated in many different forms of cancers. Nicknamed "guardian of the genome", TP53 occupies a central node in stress response networks. The p53 protein has a key role as transcription factor in limiting oncogenesis through several growth suppressive functions, such as initiating apoptosis, senescence, or cell cycle arrest. The p53 protein is directly inactivated in about 50% of all tumors as a result of somatic gene mutations or deletions, and over 80% of tumors demonstrate dysfunctional p53 signaling. Beyond the undeniable importance of p53 as a tumor suppressor, an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: TP53; Fertility; P53 network. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600008 |
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| Carvalho,Bruno Maia; Bortolini,Maria Cátira; Santos,Sidney Emanuel Batista dos; Ribeiro-dos-Santos,Ândrea Kely Campos. |
| The formation of the Brazilian Amazonian population has historically involved three main ethnic groups, Amerindian, African and European. This has resulted in genetic investigations having been carried out using classical polymorphisms and molecular markers. To better understand the genetic variability and the micro-evolutionary processes acting in human groups in the Brazilian Amazon region we used mitochondrial DNA to investigate 159 maternally unrelated individuals from five Amazonian African-descendant communities. The mitochondrial lineage distribution indicated a contribution of 50.2% from Africans (L0, L1, L2, and L3), 46.6% from Amerindians (haplogroups A, B, C and D) and a small European contribution of 1.3%. These results indicated high genetic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: African mtDNA; Amazon population; Amerindian mtDNA; HVS-I. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100002 |
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| Viscardi,Lucas Henriques; Tovo-Rodrigues,Luciana; Paré,Pamela; Fagundes,Nelson Jurandi Rosa; Salzano,Francisco Mauro; Paixão-Côrtes,Vanessa Rodrigues; Bau,Claiton Henrique Dotto; Bortolini,Maria Cátira. |
| Abstract The FOXP subfamily is probably the most extensively characterized subfamily of the forkhead superfamily, playing important roles in development and homeostasis in vertebrates. Intrinsically disorder protein regions (IDRs) are protein segments that exhibit multiple physical interactions and play critical roles in various biological processes, including regulation and signaling. IDRs in proteins may play an important role in the evolvability of genetic systems. In this study, we analyzed 77 orthologous FOXP genes/proteins from Tetrapoda, regarding protein disorder content and evolutionary rate. We also predicted the number and type of short linear motifs (SLIMs) in the IDRs. Similar levels of protein disorder (approximately 70%) were found for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: FOXP2; Intrinsically disordered protein regions; Forkhead superfamily; Short linear motif; Molecular evolution. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100181 |
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| Registros recuperados: 10 | |
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