TrypanosomaCruzi : Ancestral Genomes and Population Structure (2009)
Pena, Sérgio D.J., Machado, Carlos Renato, Macedo, Andréa Mara
Although the genome of Trypanosomacruzi has been completely sequenced, little is known about its population structure and evolution. Since 1999, two major evolutionary lineages presenting distinct...
No association found between gr/gr deletions and infertility in Brazilian males (2006)
Carvalho, Cláudia M.B., Zuccherato, Luciana W., Bastos-Rodrigues, Luciana, Santos, Fabrício R., Pena, Sérgio D.J.
The Y chromosome carries several spermatogenesis genes distributed in three regions: AZFa, AZFb and AZFc. Microdeletions in these regions have been seen in 10% of sterile males with azoospermia or...
Macedo, Andréa M., Machado, Carlos R., Oliveira, Riva P., Pena, Sérgio D.J.
Chagas disease, caused by the protozoan Trypanosoma cruzi, has a variable clinical course, ranging from symptomless infection to severe chronic disease with cardiovascular or gastrointestinal...
Pena,Sérgio D.J., Bortolini,Maria Cátira
NESTE TRABALHO nós usamos o instrumental da genética molecular e da genética de populações para estimar quantitativamente a contribuição africana para a formação do povo brasileiro....
Cloning and Molecular Characterization of the Schistosoma mansoni Genes RbAp48 and Histone H4 (2002)
Souza,Patrícia P, Santos,Débora N, Pena,Sérgio D J, Franco,Glória R
The human nuclear protein RbAp48 is a member of the tryptophan/aspartate (WD) repeat family, which binds to the retinoblastoma (Rb) protein. It also corresponds to the smallest subunit of the...
Pereira,Rinaldo W., Pires,Edina R., Duarte,Ana P.M., Moura,Ricardo P. De, Monteiro,Elisangela, Torloni,Humberto, ...
The identification of a 32-bp deletion in the cc-chemokine receptor-5 gene (CCR5delta32 allele) that renders homozygous individuals highly resistant to HIV infection has prompted worldwide...
Screening fetal losses for monosomy X with a simple PCR-based procedure (2000)
Pereira,Rinaldo W., Sturzeneker,Rosane, Pena,Sérgio D.J.
To screen for monosomy X in spontaneous fetal losses we explored a simple molecular strategy based on loss of heterozygosity at highly polymorphic X-linked loci. We developed a multiplex fluorescent...
Sturzeneker, Rosane, Bevilacqua, Roberta A.U., Haddad, Luciana A., Simpson, Andrew J.G., Pena, Sérgio D.J.
We screened 42 sporadic gastric tumors and found that seven of them had significant microsatellite instability. These were then studied at 26 microsatellite loci, comprising di-, tri- and...
Diagnosis of the fragile X syndrome in males using methylation-specific PCR of the FMRI locus (1999)
Pena,Sérgio D.J., Sturzeneker,Rosane
We have developed a non-isotopic technique based on methylation-specific PCR (MSP) of the FMR1 promoter for the identification of fragile X full mutations among men. DNA samples were first treated...
Probing the genetic population structure of Trypanosoma cruzi with polymorphic microsatellites
Oliveira, Riva P., Broude, Natalia E., Macedo, Andrea M., Cantor, Charles R., Smith, Cassandra L., Pena, Sérgio D. J.
We describe here the identification of eight polymorphic microsatellite loci with (CA)n repeats in the Trypanosoma cruzi genome based on the affinity capture of fragments using biotinylated (CA)12...
Color and genomic ancestry in Brazilians
Parra, Flavia C., Amado, Roberto C., Lambertucci, José R., Rocha, Jorge, Antunes, Carlos M., Pena, Sérgio D. J.
This work was undertaken to ascertain to what degree the physical appearance of a Brazilian individual was predictive of genomic African ancestry. Using a panel of 10 population-specific alleles, we...
Vasconcelos, Ana Tereza R., Ferreira, Henrique B., Bizarro, Cristiano V., Bonatto, Sandro L., Carvalho, Marcos O., Pinto, Paulo M., ...
This work reports the results of analyses of three complete mycoplasma genomes, a pathogenic (7448) and a nonpathogenic (J) strain of the swine pathogen Mycoplasma hyopneumoniae and a strain of the...
Tarazona-Santos, Eduardo, Carvalho-Silva, Denise R., Pettener, Davide, Luiselli, Donata, De Stefano, Gian Franco, Labarga, Cristina Martinez, ...
The geographic structure of Y-chromosome variability has been analyzed in native populations of South America, through use of the high-frequency Native American haplogroup defined by the DYS199-T...
The Phylogeography of Brazilian Y-Chromosome Lineages
Carvalho-Silva, Denise R., Santos, Fabrício R., Rocha, Jorge, Pena, Sérgio D. J.
We examined DNA polymorphisms in the nonrecombining portion of the Y-chromosome to investigate the contribution of distinct patrilineages to the present-day white Brazilian population. Twelve...
The Ancestry of Brazilian mtDNA Lineages
Alves-Silva, Juliana, Da Silva Santos, Magda, Guimarães, Pedro E. M., Ferreira, Alessandro C. S., Bandelt, Hans-Jürgen, Pena, Sérgio D. J., ...
We have analyzed 247 Brazilian mtDNAs for hypervariable segment (HVS)–I and selected restriction fragment-length–polymorphism sites, to assess their ancestry in different continents. The total...
Ancestral Genomes, Sex, and the Population Structure of Trypanosoma cruzi
De Freitas, Jorge M., Augusto-Pinto, Luiz, Pimenta, Juliana R, Bastos-Rodrigues, Luciana, Gonçalves, Vanessa F, Teixeira, Santuza M. R, ...
Acquisition of detailed knowledge of the structure and evolution of Trypanosoma cruzi populations is essential for control of Chagas disease. We profiled 75 strains of the parasite with five nuclear...
Augusto-Pinto, Luiz, Teixeira, Santuza M R, Pena, Sérgio D J, Machado, Carlos Renato
We have identified single-nucleotide polymorphisms (SNPs) in the mismatch-repair gene TcMSH2 from Trypanosoma cruzi. Phylogenetic inferences based on the SNPs, confirmed by RFLP analysis of 32...
Colorectal Cancer “Methylator Phenotype”: Fact or Artifact?1
Anacleto, Charles, Leopoldino, Andréia M, Rossi, Benedito, Soares, Fernando A, Lopes, Ademar, Rocha, José Cláudio C, ...
It has been proposed that human colorectal tumors can be classified into two groups: one in which methylation is rare, and another with methylation of several loci associated with a “CpG island...
Probing the genetic population structure of Trypanosoma cruzi with polymorphic microsatellites
Oliveira, Riva P., Broude, Natalia E., Macedo, Andrea M., Cantor, Charles R., Smith, Cassandra L., Pena, Sérgio D. J.
We describe here the identification of eight polymorphic microsatellite loci with (CA)n repeats in the Trypanosoma cruzi genome based on the affinity capture of fragments using biotinylated (CA)12...
Color and genomic ancestry in Brazilians
Parra, Flavia C., Amado, Roberto C., Lambertucci, José R., Rocha, Jorge, Antunes, Carlos M., Pena, Sérgio D. J.
This work was undertaken to ascertain to what degree the physical appearance of a Brazilian individual was predictive of genomic African ancestry. Using a panel of 10 population-specific alleles, we...
The Phylogeography of Mitochondrial DNA Haplogroup L3g in Africa and the Atlantic Slave Trade
Bortolini, Maria Cátira, Da Silva, Wilson A., Zago, Marco Antônio, Elion, Jacques, Krishnamoorthy, Rajagopal, Gonçalves, Vanessa F., ...
Vasconcelos, Ana Tereza R., Ferreira, Henrique B., Bizarro, Cristiano V., Bonatto, Sandro L., Carvalho, Marcos O., Pinto, Paulo M., ...
This work reports the results of analyses of three complete mycoplasma genomes, a pathogenic (7448) and a nonpathogenic (J) strain of the swine pathogen Mycoplasma hyopneumoniae and a strain of the...
Tarazona-Santos, Eduardo, Carvalho-Silva, Denise R., Pettener, Davide, Luiselli, Donata, De Stefano, Gian Franco, Labarga, Cristina Martinez, ...
The geographic structure of Y-chromosome variability has been analyzed in native populations of South America, through use of the high-frequency Native American haplogroup defined by the DYS199-T...
The Phylogeography of Brazilian Y-Chromosome Lineages
Carvalho-Silva, Denise R., Santos, Fabrício R., Rocha, Jorge, Pena, Sérgio D. J.
We examined DNA polymorphisms in the nonrecombining portion of the Y-chromosome to investigate the contribution of distinct patrilineages to the present-day white Brazilian population. Twelve...
The Ancestry of Brazilian mtDNA Lineages
Alves-Silva, Juliana, Da Silva Santos, Magda, Guimarães, Pedro E. M., Ferreira, Alessandro C. S., Bandelt, Hans-Jürgen, Pena, Sérgio D. J., ...
We have analyzed 247 Brazilian mtDNAs for hypervariable segment (HVS)–I and selected restriction fragment-length–polymorphism sites, to assess their ancestry in different continents. The total...
Ancestral Genomes, Sex, and the Population Structure of Trypanosoma cruzi
De Freitas, Jorge M., Augusto-Pinto, Luiz, Pimenta, Juliana R, Bastos-Rodrigues, Luciana, Gonçalves, Vanessa F, Teixeira, Santuza M. R, ...
Acquisition of detailed knowledge of the structure and evolution of Trypanosoma cruzi populations is essential for control of Chagas disease. We profiled 75 strains of the parasite with five nuclear...
Augusto-Pinto, Luiz, Teixeira, Santuza M R, Pena, Sérgio D J, Machado, Carlos Renato
We have identified single-nucleotide polymorphisms (SNPs) in the mismatch-repair gene TcMSH2 from Trypanosoma cruzi. Phylogenetic inferences based on the SNPs, confirmed by RFLP analysis of 32...
Colorectal Cancer “Methylator Phenotype”: Fact or Artifact?1
Anacleto, Charles, Leopoldino, Andréia M, Rossi, Benedito, Soares, Fernando A, Lopes, Ademar, Rocha, José Cláudio C, ...
It has been proposed that human colorectal tumors can be classified into two groups: one in which methylation is rare, and another with methylation of several loci associated with a “CpG island...
Vago, Annamaria R., Andrade, Luciana O., Leite, Adriana A., D’Ávila Reis, Débora, Macedo, Andrea M., Adad, Sheila J., ...
We have previously shown that a low-stringency single-specific primer–polymerase chain reaction (LSSP- PCR) is a highly sensitive and reproducible technique for the genetic profiling of Trypanosoma...
A Worldwide Phylogeography for the Human X Chromosome
Santos-Lopes, Simone S., Pereira, Rinaldo W., Wilson, Ian J., Pena, Sérgio D.J.
Virus-Host Coevolution: Common Patterns of Nucleotide Motif Usage in Flaviviridae and Their Hosts
Lobo, Francisco P., Mota, Bruno E. F., Pena, Sérgio D. J., Azevedo, Vasco, Macedo, Andréa M., Tauch, Andreas, ...
Virus-host biological interaction is a continuous coevolutionary process involving both host immune system and viral escape mechanisms. Flaviviridae family is composed of fast evolving RNA viruses...
Drummond, Marcela G., Calzavara-Silva, Carlos E., D'Astolfo, Diego S., Cardoso, Fernanda C., Rajão, Matheus A., Mourão, Marina M., ...
Schistosomes are parasites that exhibit a complex life cycle during which they progress through many morphological and physiological transformations. These transformations are likely accompanied by...