Microarray analysis of gene expression induced by sexual contact in Schistosoma mansoni (2007)
Waisberg, Michael, Lobo, Francisco P, Cerqueira, Gustavo C, Passos, Liana KJ, Carvalho, Omar S, Franco, Glória R, ...
Abstract Background The parasitic trematode Schistosoma mansoni is one of the major causative agents of Schistosomiasis, a disease that affects approximately 200 million people, mostly in developing...
Ricardo JPS Guimaräes, Corina C Freitas, Luciano V Dutra, Ana CM Moura, Ronaldo S Amaral, Sandra C Drummond, ...
The aim of this work is to establish a relationship between schistosomiasis prevalence and social-environmental variables, in the state of Minas Gerais, Brazil, through multiple linear regression....
Guimarães,Ricardo JPS, Freitas,Corina C, Dutra,Luciano V, Moura,Ana CM, Amaral,Ronaldo S, Drummond,Sandra C, ...
The aim of this work is to establish a relationship between schistosomiasis prevalence and social-environmental variables, in the state of Minas Gerais, Brazil, through multiple linear regression....
Estrada, Victoria E., Velásquez, Luz E., Caldeira, Roberta L., Bejarano, Eduar E., Rojas, Winston, Carvalho, Omar S.
The planorbid snail Biomphalaria edisoni n. sp. is described from morphological and molecular characters, based on specimens collected at two localities in Colombia. The new species has the typical...
Estrada, Victoria E., Velásquez, Luz E., Caldeira, Roberta L., Bejarano, Eduar E., Rojas, Winston, Carvalho, Omar S.
The planorbid snail Biomphalaria edisoni n. sp. is described from morphological and molecular characters, based on specimens collected at two localities in Colombia. The new species has the typical...
Roberta L Caldeira, Pollanah M Lira, Omar S Carvalho
Freshwater snails belonging to the genus Biomphalaria act as intermediate hosts for the parasite trematode Schistosoma mansoni in Africa and in the neotropical region. Identification of such...
Omar S Carvalho, Paula CM Cardoso, Pollanah M Lira, Alejandra Rumi, Andrea Roche, Elizabeth Berne, ...
The specific identification of Lymnaeid snails is based on a comparison of morphological characters of the shell, radula, renal and reproductive organs. However, the identification is complicated by...
Rural Tourism as Risk Factor for the Transmission of Schistosomiasis in Minas Gerais, Brazil (2004)
Martin J Enk, Roberta L Caldeira, Omar S Carvalho, Virginia T Schall
Recently, the booming rural tourism in endemic areas of the state of Minas Gerais was identified as a contributing factor in the dissemination of the infection with Schistosoma mansoni . This...
Caldeira,Roberta L, Jannotti-Passos,Liana K, Lira,Pollanah M, Carvalho,Omar S
Freshwater snails belonging to the genus Biomphalaria act as intermediate hosts for the parasite trematode Schistosoma mansoni in Africa and in the neotropical region. Identification of such molluscs...
Carvalho,Omar S, Cardoso,Paula CM, Lira,Pollanah M, Rumi,Alejandra, Roche,Andrea, Berne,Elizabeth, ...
The specific identification of Lymnaeid snails is based on a comparison of morphological characters of the shell, radula, renal and reproductive organs. However, the identification is complicated by...
Rural tourism as risk factor for the transmission of schistosomiasis in Minas Gerais, Brazil (2004)
Enk,Martin J, Caldeira,Roberta L, Carvalho,Omar S, Schall,Virginia T
Recently, the booming rural tourism in endemic areas of the state of Minas Gerais was identified as a contributing factor in the dissemination of the infection with Schistosoma mansoni. This article...
Caldeira, Roberta L., Jannotti-Passos, Liana K., Lira, Pollanah M., Carvalho, Omar S.
Freshwater snails belonging to the genus Biomphalaria act as intermediate hosts for the parasite trematode Schistosoma mansoni in Africa and in the neotropical region. Identification of such molluscs...
Carvalho, Omar S., Cardoso, Paula C.M., Lira, Pollanah M., Rumi, Alejandra, Roche, Andrea, Berne, Elizabeth, ...
The specific identification of Lymnaeid snails is based on a comparison of morphological characters of the shell, radula, renal and reproductive organs. However, the identification is complicated by...
Rural tourism as risk factor for the transmission of Schistosomiasis in Minas Gerais, Brazil (2004)
Enk, Martin J., Caldeira, Roberta L., Carvalho, Omar S., Schall, Virgínia
Recently, the booming rural tourism in endemic areas of the state of Minas Gerais was identified as a contributing factor in the dissemination of the infection with Schistosoma mansoni. This article...
Jessica C Kissinger, Rodrigo AF Redondo, Edina CR Pires, Andrew JG Simpson, Omar S Carvalho
The first and second internal transcribed spacer regions (ITS1 and ITS2) of the ribosomal DNA of Biomphalaria tenagophila complex (B. tenagophila, B. occidentalis, and B. t. guaibensis) were...
Vidigal,Teofânia HDA, Spatz,Linus, Kissinger,Jessica C, Redondo,Rodrigo AF, Pires,Edina CR, Simpson,Andrew JG, ...
The first and second internal transcribed spacer regions (ITS1 and ITS2) of the ribosomal DNA of Biomphalaria tenagophila complex (B. tenagophila, B. occidentalis, and B. t. guaibensis) were...
Spatz, Linus, Kissinger, Jessica C., Redondo, Rodrigo A. F., Pires, Edina C. R., Simpson, Andrew J. G., ...
The first and second internal transcribed spacer regions (ITS1 and ITS2) of the ribosomal DNA of Biomphalaria tenagophila complex (B. tenagophila, B. occidentalis, and B. t. guaibensis) were...
Roberta L Caldeira, Omar S Carvalho, Cristiane LFG Mendonça, Carlos Graeff-Teixeira, Márcia CF Silva, Renata Ben, ...
Angiostrongylus cantonensis , A. costaricensis, and A. vasorum are etiologic agents of human parasitic diseases. Their identification, at present, is only possible by examining the adult worm...
Caldeira,Roberta L, Carvalho,Omar S, Mendonça,Cristiane LFG, Graeff-Teixeira,Carlos, Silva,Márcia CF, Ben,Renata, ...
Angiostrongylus cantonensis, A. costaricensis, and A. vasorum are etiologic agents of human parasitic diseases. Their identification, at present, is only possible by examining the adult worm after a...
Caldeira, Roberta L., Carvalho, Omar S., Graeff-Teixeira, Carlos, Silva, Márcia C. F., Ben, Renata, ...
Angiostrongylus cantonensis, A. costaricensis, and A. vasorum are etiologic agents of human parasitic diseases. Their identification, at present, is only possible by examining the adult worm after a...
Luz E Velásquez, Roberta L Caldeira, Victoria Estrada, Omar S Carvalho
In Colombia, five Biomphalaria planorbid species are known: B. kuhniana, B. straminea, B. peregrina, B. canonica and B. oligoza(var. B. philippiana). Among them, B. straminea is intermediate host...
Roberta L Caldeira, Omar S Carvalho, Regina CG Lage, Guilherme C Oliveira
Simple sequence repeat anchored polymerase chain reaction amplification (SSR-PCR) is a genetic typing technique based on primers anchored at the 5' or 3' ends of microsatellites, at high primer...
Teofânia HDA Vidigal, Lângia C Montresor, Andrew JG Simpson, Omar S Carvalho
The intermediate hosts of Schistosoma mansoni , in Brazil, Biomphalaria glabrata , B. tenagophila and B. straminea , were identified by restriction fragment length polymorphism analysis of the...
Velásquez,Luz E, Caldeira,Roberta L, Estrada,Victoria, Carvalho,Omar S
In Colombia, five Biomphalaria planorbid species are known: B. kuhniana, B. straminea, B. peregrina, B. canonica and B. oligoza(var. B. philippiana). Among them, B. straminea is intermediate host of...
Caldeira,Roberta L, Carvalho,Omar S, Lage,Regina CG, Cardoso,Paula Cristina M, Oliveira,Guilherme C
Simple sequence repeat anchored polymerase chain reaction amplification (SSR-PCR) is a genetic typing technique based on primers anchored at the 5' or 3' ends of microsatellites, at high primer...
Vidigal,Teofânia HDA, Montresor,Lângia C, Simpson,Andrew JG, Carvalho,Omar S
The intermediate hosts of Schistosoma mansoni, in Brazil, Biomphalaria glabrata, B. tenagophila and B. straminea, were identified by restriction fragment length polymorphism analysis of the...
Roberta L Caldeira, Teofânia HDA Vidigal, Andrew JG Simpson, Omar S Carvalho
Biomphalaria glabrata, B. tenagophila and B. straminea are intermediate hosts of Schistosoma mansoni, in Brazil. The latter is of epidemiological importance in the northwest of Brazil and, due to...
Teofânia HDA Vidigal, Roberta L Caldeira, Andrew JG Simpson, Omar S Carvalho
In Cuba, several Biomphalaria species have been reported such as B. orbignyi, B. schrammi, B. helophila, B. havanensis and B. peregrina; only the latter three are considered as potential hosts of...
Vidigal,Teofânia HDA, Caldeira,Roberta L, Simpson,Andrew JG, Carvalho,Omar S
In Cuba, several Biomphalaria species have been reported such as B. orbignyi, B. schrammi, B. helophila, B. havanensis and B. peregrina; only the latter three are considered as potential hosts of...
Caldeira,Roberta L, Vidigal,Teofânia HDA, Simpson,Andrew JG, Carvalho,Omar S
Biomphalaria glabrata, B. tenagophila and B. straminea are intermediate hosts of Schistosoma mansoni, in Brazil. The latter is of epidemiological importance in the northwest of Brazil and, due to...
Further Studies on the Molecular Systematics of Biomphalaria Snails from Brazil (2000)
Teofânia HDA Vidigal, Roberta Lima Caldeira, Andrew JG Simpson, Omar S Carvalho
The polymerase chain reaction and restriction fragment length polymorphism (RFLP) of the internal transcribed spacer (ITS) region of the rRNA gene, using the enzyme DdeI were used for the molecular...
Roberta L Caldeira, Teofânia HDA Vidigal, Liboria Matinella, Andrew JG Simpson, Omar S Carvalho
Snails of the genus Biomphalaria from Venezuela were subjected to morphological assessment as well as polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis....
Linus Spatz, Teofnia HDA Vidigal, Mrcia CA Silva, Omar S Carvalho
The correct identification of Biomphalaria oligoza, B. orbignyi and B. peregrina species is difficult due to the morphological similarities among them. B. peregrina is widely distributed in South...
Spatz,Linus, Vidigal,Teofânia HDA, Silva,Márcia CA, Gonzalez Cappa,Stella Maris, Carvalho,Omar S
The correct identification of Biomphalaria oligoza, B. orbignyi and B. peregrina species is difficult due to the morphological similarities among them. B. peregrina is widely distributed in South...
Caldeira,Roberta L, Vidigal,Teofânia HDA, Matinella,Liboria, Simpson,Andrew JG, Carvalho,Omar S
Snails of the genus Biomphalaria from Venezuela were subjected to morphological assessment as well as polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis....
Further studies on the molecular systematics of Biomphalaria snails from Brazil (2000)
Vidigal,Teofânia HDA, Caldeira,Roberta Lima, Simpson,Andrew JG, Carvalho,Omar S
The polymerase chain reaction and restriction fragment length polymorphism (RFLP) of the internal transcribed spacer (ITS) region of the rRNA gene, using the enzyme DdeI were used for the molecular...
Cristiane LGF Mendonça, Omar S Carvalho, Ester M Mota, Marcelo Pelajo-Machado, Luzia FG Caputo, Henrique L Lenzi
The intermediate hosts of Angiostrongylus costaricensis are terrestrian molluscs, mostly of the family Veronicellidae. The present work aimed at clarifying more accurately the sites of penetration...
Mendonça,Cristiane LGF, Carvalho,Omar S, Mota,Ester M, Pelajo-Machado,Marcelo, Caputo,Luzia FG, Lenzi,Henrique L
The intermediate hosts of Angiostrongylus costaricensis are terrestrian molluscs, mostly of the family Veronicellidae. The present work aimed at clarifying more accurately the sites of penetration...
Spatz, Linus, Caldeira, Roberta L., Neto, Emmanuel Dias, Cappa, Stella Maris Gonzalez, Carvalho, Omar S.
Biomphalaria tenagophila tenagophila, B. tenagophila guaibensis and B. occidentalis are indistinguishable on the basis of shell morphology and the majority of organs of the genital system. Only B. t....
Genetic Variability and Identification of the Intermediate Snail Hosts of Schistosoma mansoni (1998)
Teofânia HDA Vidigal, Emmanuel Dias Neto, Linus Spatz, Diana N Nunes, Edina R Pires, Andrew JG Simpson, ...
Studies based on shell or reproductive organ morphology and genetic considerations suggest extensive intraspecific variation in Biomphalaria snails. The high variability at the morphological and...
RESEARCH NOTE - Molecular Study of Similar Biomphalaria Species (1998)
Linus Spatz, Emmanuel Dias Neto, Omar S Carvalho
Biomphalaria tenagophila tenagophila (Orbigny 1835) is a planorbid susceptible to infection with Schistosoma mansoni which occupies a wide range in South America and is an important intermediate host...
Roberta Lima Caldeira, Teofânia HDA Vidigal, Sônia Torquato Paulinelli, Andrew JG Simpson, Omar S Carvalho
The freshwater snails Biomphalaria straminea, B. intermedia, B. kuhniana and B. peregrina, are morphologically similar; based on this similarity the first three species were therefore grouped in the...
CARVALHO,Omar S., MASSARA,Cristiano L., GUERRA,Henrique L., CAMPOS,Yoná R., CALDEIRA,Roberta L., CHAVES,Adelú, ...
This study was conducted to assess the presence of schistosomiasis mansoni in the "Noroeste de Minas" mesoregion, an area considered non-endemic. A malacologic survey and parasitologic stool...
Genetic variability and identification of the intermediate snail hosts of Schistosoma mansoni (1998)
Vidigal,Teofânia HDA, Dias Neto,Emmanuel, Spatz,Linus, Nunes,Diana N, Pires,Edina R, Simpson,Andrew JG, ...
Studies based on shell or reproductive organ morphology and genetic considerations suggest extensive intraspecific variation in Biomphalaria snails. The high variability at the morphological and...
Caldeira,Roberta Lima, Vidigal,Teofânia HDA, Paulinelli,Sônia Torquato, Simpson,Andrew JG, Carvalho,Omar S
The freshwater snails Biomphalaria straminea, B. intermedia, B. kuhniana and B. peregrina, are morphologically similar; based on this similarity the first three species were therefore grouped in the...
Molecular study of similar Biomphalaria species (1998)
Spatz,Linus, Vidigal,Teofânia HDA, Caldeira,Roberta L, Dias Neto,Emmanuel, González Cappa,Stella Maris, Carvalho,Omar S
Edina Rodrigues Pires, Teofania HDA Vidigal, Horacio MS Teles, Andrew JG Simpson, Omar S Carvalho
Although Biomphalaria occidentalis and B. tenagophila are indistinguishable on the basis of shell morphology and the majority of their genital organs, only the latter is susceptible to infection with...
Omar S Carvalho, Cristiano L Massara, Henrique L Guerra, Roberta L Caldeira, Cristiane LF Mendonca, ...
Teofania HDA Vidigal, Emmanuel Dias Neto, Andrew JG Simpson, Omar S Carvalho
The low stringency-polymerase chain reaction (LS-PCR) with a pair of specific primers for the amplification of the 18S rRNA gene was evaluated as a means of differentiating between the two...
DNA Polymorphism of Schistosomes and their Snail Hosts (1995)
Andrew JG Simpson, Emmanuel Dias Neto, Teofania Hda Vidigal, Heloisa B Pena, Omar S Carvalho, Sergio DJ Pena
Analysis of the genomes of schistosomes and one of their intermediate hosts, Biomphalaria glabrata, using Random Amplified Polymorphic DNA (RAPD) demonstrated that intraspecific genetic polymorphism...
Determinantes ambientais e sociais da esquistossomose mansoni em Ravena, Minas Gerais, Brasil (1995)
Coura-Filho,Pedro, Farah,Márcio William C., Rezende,Dilermando F. De, Lamartine,Simone Da Silva, Carvalho,Omar S., Katz,Naftale
Neste estudo foram identificados os determinantes biológicos e sociais na transmissão da esquistossomose em Ravena, Sabará, Minas Gerais, Brasil, em 1980, visando a caracterizar o perfil...