Hymenoptera “parasitica” no estado do Mato Grosso do Sul, Brasil

A checklist composed of 105 species of parasitic Hymenoptera, which includes the non-aculeate Apocrita, recorded in the state of Mato Grosso do Sul (MS), Brazil, is presented. A new list, containing 153 genera obtained in recent surveys is also presented; out of these 131 are new records. The major knowledge gaps for these organisms in the State and the prospects for future studies for these organisms are discussed. © 2017, Fundacao Zoobotanica do Rio Grande do Sul. All rights reserved

Distribution of the CCR2-64I allele in three Brazilian ethnic groups

Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2013-01-22T19:14:01Z No. of bitstreams: 1 Acosta, Angelina Xavier. et al. Distribution of the....pdf: 90711 bytes, checksum: 1dc2a96aa2013c0f4f75656b9c504c48 (MD5)Made available in DSpace on 2013-01-22T19:14:01Z (GMT). No. of bitstreams: 1 Acosta, Angelina Xavier. et al. Distribution of the....pdf: 90711 bytes, checksum: 1dc2a96aa2013c0f4f75656b9c504c48 (MD5) Previous issue date: 2003Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, Brasil / Universidade Federal da Bahia. Faculdade de Medicina. Departamento de Pediatria. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Fundação para o Desenvolvimento das Ciências. Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, Brasil / Fundação para o Desenvolvimento das Ciências. Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, BrasilCCR2 is a member of the superfamily of seven transmembrane domain G protein-coupled receptors, the largest receptor superfamily in the human genome. CCR2 acts as a receptor for MCP-1 (CC chemokine) and as a co-receptor for HIV-1 cell-target entry. The gene encoding this receptor is mapped to the chromosome band 3p21. A G-to-A transition at position 190 characterizes the CCR2-64I mutation, causing valine to isoleucine substitution in codon 64. This mutation has been identified as an important factor for delaying progression to AIDS. Here, we determined the prevalence of this allele in three different Brazilian populations: 261 Amerindians inhabiting an isolated region in northern Brazil (82 samples from the Waiampi tribe, and 179 samples from the Tiriyó tribe); 89 German descendents from Joinville, a city in southern Brazil; and 305 individuals of predominantly African ancestry, from Salvador, a city in northeast Brazil. The CCR2-64I mutant allele was identified in 26% of the Tiryió and 30% of Waiampi samples, in 18% of the Joinville samples, and in 14% of the Salvador samples

Study of the CCR5-m303 mutation in three different ethnic groups from Brazil

The main coreceptor gene involved in HIV-1 infection is CCR5 beta chemokine receptor gene for which several mutations have been described, some of which have correlated with HIV-1 infection, acquired immune deficiency syndrome (AIDS), or both. Deletion of 32bp in the CCR5 gene (delta32) has been shown to confer resistance to infection by HIV-1 R5 strains. Another mutation, characterized by a thymine to adenine (T to A) nucleotide substitution at position 303 (m303), has shown the same effects as the delta32 mutation, with previous studies having shown that the allele frequency of the CCR5-m303 mutation is 0.014 in African-American and 0.007 in French populations. The Brazilian population is known to be genetically diverse, because of which we investigated the allele frequency of the CCR5-m303 mutation in three different Brazilian ethnic groups containing individuals who were not infected with HIV-1 and also in a cohort of HIV-1 long-term non-progressors. We used the polymerase chain reaction (PCR) and HincII restriction fragment length polymorphisms (RFLP) to investigate these populations and found that none of the 566 individuals examined the mutant CCR5-m303 allele. These results are in accordance with the previously reported allelic frequencies for African-American and Caucasian populations and may reflect the real prevalence of the m303 mutation in Brazil

Distribution of SDF1-3'A polymorphisms in three different ethnic groups from Brazil

Submitted by Martha Silveira Berbert ([email protected]) on 2011-03-29T20:48:16Z No. of bitstreams: 0Made available in DSpace on 2011-03-29T20:48:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-04Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, Brasil / Fundação para o Desenvolvimento das Ciências. Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, Brasil / Universidade Federal da Bahia, Faculdade de Medicina. Department of Pediatrics. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, BrasilFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Laboratório Avançado de Saúde Pública. Salvador, BA, Brasil / Fundação para o Desenvolvimento das Ciências. Escola Bahiana de Medicina e Saúde Pública. Salvador, BA, BrasilA mutation described as a G-to-A transition has been reported in SDF-1 gene (SDF1-3'A), being prevalent in all ethnic groups, except in Africans. This mutation is associated with the onset of AIDS progression. Our aim was to identify the frequency of this allele in different groups from Brazil: Tiriyó and Waiampi Amerindian tribes (Asian ancestry); selected blood donors from Joinville (German descendents); and from Salvador (predominance of African and Portuguese mixture). SDF1-3'A was screened by PCR/RFLP with MspI enzyme. Our results showed a high allelic frequency in Tiriyó tribe (0.24) and Joinville population (0.21), and a frequency of 0.17 and 0.05 in the Salvador population and in the Waiampi tribe, respectively. There was no statistical difference among the allelic frequencies in the studied ethnic groups, except in the Waiampi. Due to the great genetic diversity among Brazilian population and the lack of studies on SDF1-3'A allele, our study of this allelic frequency in these different Brazilian ethnic groups could be important to identification of biomarker for therapeutic support in progression to AIDS and a molecular marker for analysis of evolutionary relationships among human populations