43 results on '"Scofield, Alessandra"'
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2. Detection of Pathogenic Leptospira in Captive Chelonians (Kinosternon scorpioides—Linnaeus, 1766) in the Brazilian Amazon
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Freitas, Rafael Souza, primary, Rocha, Katarine de Souza, additional, Monteiro, Louysse Helene, additional, Alexandre, Thais Fernandes, additional, Monteiro, Thamillys Rayssa Marques, additional, Honorio, Betsy Emely Tavares, additional, Gripp, Mayra Coelho, additional, Guimarães, Claudio Douglas de Oliveira, additional, Palha, Maria das Dores Correia, additional, Gonçalves, Thamirys de Souza, additional, Scofield, Alessandra, additional, and Moraes, Carla Cristina Guimarães de, additional
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- 2024
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3. Molecular characterization of Trypanosoma cruzi DTUs of the triatomine species in a Chagas disease endemic area
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Silva, Tatiene Rossana Móta, Rios, Thaynádia Gomes, do Nascimento Ramos, Carlos Alberto, Scofield, Alessandra, Lima, Thiago Antonio Rodrigues Freire, Alves, Leucio Câmara, Ramos, Rafael Antonio Nascimento, and de Carvalho, Gílcia Aparecida
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- 2022
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4. Tick and flea infestations in captive Tapirus terrestris and Tapirus kabomani (Perissodactyla: Tapiridae) in the Brazilian Amazon
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Gonçalves, Thamirys de Souza, primary, Sampaio-Júnior, Francisco Dantas, additional, Barrozo, Pedro Henrique Marques, additional, de Farias, Diana Maria, additional, Alves, Larissa Borges, additional, de Souza, Elda Ely Gomes, additional, de Aguiar, Adriano Bezerra, additional, Nery, Breno William Batista, additional, Gering, Ana Paula, additional, Linardi, Pedro Marcos, additional, Martins, Thiago Fernandes, additional, and Scofield, Alessandra, additional
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- 2023
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5. Molecular Detection of Histoplasma capsulatum in Small Wild Mammals, Dogs, and Cats from Areas of Remaining Forest in the Brazilian Amazon
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de Farias, Diana Maria, primary, Leite Barros, Flávia de Nazaré, additional, Sampaio-Júnior, Francisco Dantas, additional, dos Santos Cruz Vieira, Juliana, additional, de Sousa Gonçalves, Thamirys, additional, da Costa Rodrigues, Amanda de Nazaré, additional, de Lima Macedo, Renata Cecília, additional, Duarte Cerqueira, Valíria, additional, Mendes de Oliveira, Ana Cristina, additional, Souza da Paz, Giselle, additional, Góes-Cavalcante, Gustavo, additional, and Scofield, Alessandra, additional
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- 2023
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6. Larvicidal activity of the crude methanolic extract from leaves of Clibadium surinamense against Aedes aegypti
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Cruz, Andrely de Jesus Soares da, primary, Silva, Wanessa Rendeiro da Silva e, additional, Cruz, Juliana dos Santos, additional, Dantas Sampaio-Júnior, Francisco, additional, Monteiro, Maria Vivina Barros, additional, Hamoy, Moises, additional, Scofield, Alessandra, additional, and Góes-Cavalcante, Gustavo, additional
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- 2023
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7. Occurrence of eggs and oocysts of gastrointestinal parasites in passerine birds kept in captivity in Para State, Brazil/Ocorrencia de ovos e oocistos de parasitos gastrointestinais em aves Passeriformes mantidas em cativeiro no estado do Para, Brasil
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Magalhaes-Matos, Paulo Cesar, Silva, Michele Bahia do Vale, Souza, Paulo Geovani Silva, Lima, Danillo Henrique da Silva, de Morais, Rodrigo, de Farias, Diana Maria, Alvarenga, Lais Cristina Oliveira, Gabriel, Aurea Martins, Oliveira, Wanessa Batista Lima, Goes-Cavalcante, Gustavo, and Scofield, Alessandra
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- 2016
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8. Reemerging of natural infection by Trypanosoma evansi in horses in Arari, Marajo Island, Brazil/Reemergencia da infeccao natural por Trypanosoma evansi em cavalos, na regiao do Arari, Ilha do Marajo, Brazil
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da Silva, Josileide Araujo, Domiciano, Tarcisio Oliveira, Montao, Daniele Pina, Sousa, Paulo Geovani Silva, Ramos, Leandro Lopes, Paredes, Laura Jamille Argolo, Monteiro, Silvia Gonzalez, Rivero, Gabriela Riet Correa, Scofield, Alessandra, Bezerra, Jr., Pedro, Bezerra, Isis Abel, and Cerqueira, Valiria Duarte
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- 2016
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9. Molecular detection of Trypanosoma evansi (Kinetoplastida: Trypanosomatidae) in procyonids (Carnivora: Procyonidae) in Eastern Amazon, Brazil/Deteccao molecular de Trypanosoma evansi (Kinetoplastida: Trypanosomatidae) em procionideos (Carnivora: Procyonidae) na Amazonia Oriental, Brasil
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Magalhaes-Matos, Paulo Cesar, Cunha-Santos, Rafaelle, Sousa, Paulo Geovani Silva, Sampaio, Jr., Francisco Dantas, Barros, Flavia de Nazare Leite, Mourao, Fabio Rodrigo Paixao, Oliveira, Wanessa Batista Lima, Gabriel, Aurea Martins, Monteiro, Silvia Gonzalez, Goes-Cavalcante, Gustavo, and Scofield, Alessandra
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- 2016
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10. Diagnóstico pós-morte de Aelurostrongylus abstrusus e caracterização morfométrica de ovos e mórulas por meio de histologia e impressão de tecido
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Scofield Alessandra, Madureira Renata Cunha, Oliveira Carlo José Freire de, Guedes Junior Daniel da Silva, Soares Cleber Oliveira, and Fonseca Adivaldo Henrique da
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verme pulmonar ,histologia ,impressão de tecido ,morfometria ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Os objetivos deste trabalho foram diagnosticar Aelurostrongylus abstrusus por meio das técnicas de histologia e impressão de tecido pulmonar de gato doméstico e realizar a caracterização morfométrica de ovos e mórulas desse nematódeo. Pela histologia, os ovos (n=100) mediram, em média, 83,4 x 65,5mim, índice morfométrico (IM) 0,8 e as mórulas (n=100) mediram, em média, 45,4 x 31,8mim, IM 0,7. Pela impressão de pulmão, os ovos (n=100) mediram, em média, 105,3 x 93,6mim, IM 0,9, e as mórulas (n=100) mediram, em média, 43,1 x 36,5mim, IM 0,8. A utilização da técnica de impressão de tecido permitiu a observação das mesmas formas parasitárias visualizadas histologicamente. Os resultados sugerem a viabilidade da utilização dessa técnica no diagnóstico pós-morte de A. abstrusus.
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- 2005
11. Molecular characterization of Trypanosoma cruzi DTUs of the triatomine species in a Chagas disease endemic area
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Silva, Tatiene Rossana Móta, primary, Rios, Thaynádia Gomes, additional, do Nascimento Ramos, Carlos Alberto, additional, Scofield, Alessandra, additional, Lima, Thiago Antonio Rodrigues Freire, additional, Alves, Leucio Câmara, additional, Ramos, Rafael Antonio Nascimento, additional, and de Carvalho, Gílcia Aparecida, additional
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- 2021
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12. New records of Leptospira spp. in wild marsupials and a rodent in the eastern Brazilian Amazon through PCR detection
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SOUZA ROCHA, Katarine de, SCHUPP DE SENA MESQUITA, Gleiciane, SILVA FERREIRA, Maeli Fernanda, LEITE BARROS, Flávia de Nazaré, MACEDO, Renata Cecília Soares de Lima, ARAÚJO SARAIVA, Elane de, MENDES-OLIVEIRA, Ana Cristina, DUARTE CERQUEIRA, Valíria, SCOFIELD, Alessandra, GOES CAVALCANTE, Gustavo, ABEL, Isis, and GUIMARÃES DE MORAES, Carla Cristina
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live traps ,kidney ,fígado ,armadilhas ,rim ,Rodentia ,Didelphimorphia ,16S rRNA ,liver - Abstract
We analyzed the presence of Leptospira spp. in liver and kidney tissue of wild marsupials and rodents trapped in a periurban forest in the eastern Brazilian Amazon. We examined 25 individuals of four marsupial and seven rodent species for the presence of the 16S rRNA gene of Leptospira in the DNA extracted from 47 liver and kidney tissue samples using PCR. We detected positive samples in 12% (3/25) of the individuals, in kidney fragments of two marsupial species (Didelphis marsupialis and Marmosops pinheiroi) and in a liver fragment of one rodent species (Echimys chrysurus). These are the first records of Leptospira spp. in M. pinheiroi and E. chrysurus and it is the first molecular survey of marsupials and rodents in the Brazilian Amazon. RESUMO Analisamos a presença de Leptospira spp. em tecido hepático e renal de marsupiais e roedores silvestres capturados em uma floresta periurbana no leste da Amazônia brasileira. Foram examinados 25 indivíduos de quatro espécies de marsupial e sete de roedor quanto à presença do gene 16S rRNA de Leptospira no DNA extraído de 47 amostras de tecido hepático e renal usando PCR. Detectamos amostras positivas em 12% (3/25) dos indivíduos, em fragmentos renais de duas espécies de marsupial (Didelphis marsupialis e Marmosops pinheiroi) e em um fragmento hepático de uma espécie de roedor (Echimys chrysurus). Estes são os primeiros registros de Leptospira spp. em M. pinheiroi e E. chrysurus, e é o primeiro levantamento molecular de marsupiais e roedores na Amazônia brasileira.
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- 2020
13. Molecular investigation of Toxoplasma gondii in oysters (Crassostrea spp.) sold on beaches in the State of Pará, Brazil
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Rosário, Marcely Karen Santos do, primary, Silva, Jacqueline, additional, Melo, Hugo Filipe Rodrigues, additional, Monteiro, Thamillys Rayssa Marques, additional, Costa, Davi Ribeiro da, additional, Scofield, Alessandra, additional, and Moraes, Carla Cristina Guimarães de, additional
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- 2021
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14. Leishmania infantum infection in dogs from maroon communities in the Eastern Amazon/Infeccao por Leishmania infantum em caes de comunidades quilombolas na Amazonia Oriental
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da Silva, Andreia Ferreira, Damasceno, Agatha Rossanni Alves, Prado, Welton Seabra, Caldeira, Rossela Damasceno, Sampaio, Francisco Dantas, Jr., de Farias, Diana Maria, da Silva, Lais Cristina Oliveira, Souza, Ricardo Jose de Paula Guimaraes, Goes-Cavalcante, Gustavo, and Scofield, Alessandra
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- 2017
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15. New records of Leptospira spp. in wild marsupials and a rodent in the eastern Brazilian Amazon through PCR detection
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SOUZA ROCHA, Katarine de, primary, SCHUPP DE SENA MESQUITA, Gleiciane, additional, SILVA FERREIRA, Maeli Fernanda, additional, LEITE BARROS, Flávia de Nazaré, additional, MACEDO, Renata Cecília Soares de Lima, additional, ARAÚJO SARAIVA, Elane de, additional, MENDES-OLIVEIRA, Ana Cristina, additional, DUARTE CERQUEIRA, Valíria, additional, SCOFIELD, Alessandra, additional, GOES CAVALCANTE, Gustavo, additional, ABEL, Isis, additional, and GUIMARÃES DE MORAES, Carla Cristina, additional
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- 2020
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16. Serological prevalence of Toxoplasma gondii infection in cats (Belém, Pará, Brazil)
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Rocha, Katarine de Souza, primary, Lima, Michele de Souza, additional, Monteiro, Thamillys Rayssa Marques, additional, Honorio, Betsy Emely Tavares, additional, Pinho, Ana Paula Vilhena Beckman, additional, Paz, Giselle Souza da, additional, Scofield, Alessandra, additional, Cavalcante, Gustavo Góes, additional, Magalhães-Matos, Paulo Cesar, additional, Sampaio Junior, Francisco Dantas, additional, Abel, Isis, additional, Langoni, Helio, additional, and Moraes, Carla Cristina Guimarães de, additional
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- 2020
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17. Plasmodium vivax and Plasmodium?falciparum infection in Neotropical primates in the western Amazon, Brazil
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Silva, Tatiene R. M, Barros, Fl?via N. L, Bahia, Michele, Sampaio Junior, Francisco D, Santos, Sidney S. F, Inoue, Larissa S, Gon?alves, Thamirys S, Chiesorin Neto, Laerzio, Faria, Diogo C. L. O, Tchetto, Camila, Viana, Giselle Maria Rachid, Monteiro, Frederico O. B, Cavalcante, Gustavo G?es, and Scofield, Alessandra
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Amaz?nia Brasileira (BR) ,Plasmodium vivax / patogenicidade ,parasitic diseases ,Monitoramento Epidemiol?gico / veterin?ria ,Rea??o em Cadeia da Polimerase / m?todos ,Primatas / parasitologia ,Mal?ria / veterin?ria ,Primatas / anatomia & histologia ,Plasmodium falciparum / patogenicidade - Abstract
Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Federal Rural University of Rio de Janeiro. Rio de Janeiro, RJ, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Sauim Castanheiras Wildlife Refuges. Manaus, AM, Brazil. Chico Mendes Institute for Biodiversity Conservation. Manaus, AM, Brazil. Jungle Warfare Instruction Center, Manaus, Brazil Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Laborat?rio de Pesquisa B?sica em Mal?ria. Ananindeua, PA, Brasil. Federal Rural University of the Amazon. Institute of Veterinary Medicine. Postgraduate Program in Health and Animal Production in the Amazon. Bel?m, PA, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. Federal University of Par?. Institute of Veterinary Medicine. Postgraduate Program in Animal Health in the Amazon. Laboratory of Animal Parasitology. Castanhal, PA, Brazil. The Brazilian Amazon is endemic for malaria and natural infections by Plasmodium spp. have been detected in Neotropical primates. Despite the diversity of primate species in the region, studies on infections by these agents are limited. The aim of the present study was to investigate the frequency of infection by Plasmodium vivax and P. falciparum in free-born primates that were kept in captivity, in the western Amazon, Brazil. Blood samples were collected from 98 Neotropical primates. Detection of P. vivax and P. falciparum DNA was performed using a semi-nested PCR, and the amplified products were sequenced. Plasmodium spp. DNA was detected in 6.12% (6/98) of the primates. P. vivax, and P. falciparum DNA was detected in 2.04% (2/98) and 4.08% (4/98) of these mammals, respectively. Sequencing and phylogenetic analysis confirmed the results obtained from the semi-nested PCR. The presence of infected non-human primates (NHP) can be auxiliary in the maintenance of P. falciparum and P. vivax and may have implications for the malaria surveillance and control in the Brazilian Amazon. It is necessary to structure an efficient surveillance system for the aetiological agents of malaria that infect NHP and humans to reduce the risk of Plasmodium spp. introduction into new areas, to protect all susceptible species.
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- 2019
18. Dirofilaria immitis infection in dogs in Algodoal Island, Brazilian Amazon
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Moreira, Hanniele R., primary, Madeira, Ene A.O., additional, Cunha, Dalvarina N. Lima, additional, Scofield, Alessandra, additional, Góes-Cavalcante, Gustavo, additional, Abel, Isis, additional, Guimarães, Ricardo J.P.S., additional, and Fernandes, Julio I., additional
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- 2019
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19. Allergic dermatitis caused by Culicoides in Texel sheep in the state of Pará, Brazil
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Oliveira, Carlos Alberto, Silva, Antonio Ozemir Fialho, Cerqueira, Valíria D., Scofield, Alessandra, Almeida, Milton Begeres, Riet-Correa, Franklin, Felippe-Bauer, Maria L., and Riet-Correa, Gabriela
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maruim ,Dermatite alérgica ,ovinos Texel ,Texel sheep ,Culicoides ,hypersensitivity ,hipersensibilidade ,Allergic dermatitis ,Brazilian Amazon ,Amazônia brasileira ,seasonal dermatitis ,dermatite sazonal - Abstract
Allergic dermatitis was studied at a farm located in the municipality of Castanhal in the state of Pará, Brazil, from December 2009 to December 2012. Clinical and epidemiological data were obtained during monthly visits to the farm. Skin biopsies were performed for histopathological examinations, and insects were captured with Centers for Disease Control and Prevention (CDC) traps and live-bait entomological vacuum devices. The property housed a herd of both genders, with 45 Santa Inês sheep of different ages and 72 Texel adults. Of the 72 Texel sheep, 56 were affected. Of these, 24 exhibited alopecia, erythema, edema, and crust in the ears, on top of the head, and less often, around the eyes. In addition to the lesions described above, 14 animals exhibited hyperpigmentation of the ears and/or around the eyes and crust in the nose. Another 18 animals exhibited chronic lesions characterized by deformed and thickened ears, alopecia with hyperpigmentation, and in most cases, secondary bacterial infections with abscesses and/or myiasis. Some of these animals had lost part of their ears. Histologically, the lesions were characterized as orthokeratotic hyperkeratosis, acanthosis, vacuolization, and necrosis of epidermal cells. An inflammatory infiltrate was present in the dermis, which was composed mainly of eosinophils and macrophages, some lymphocytes and mast cells, and few neutrophils, in addition to edema and collagen deposition. The Santa Inês sheep were not affected. Among the captured insects, 294 specimens of Culicoides (Hoffmania) plaumanni Spinelli, 57 specimens of C. (Hoffmania) insignis Lutz, and 27 specimens of other Culicoides species were identified. We conclude that C. plaumanni, C. insignis, and possibly other Culicoides species are involved in the etiology of allergic dermatitis in Texel sheep in the state of Pará. Santa Inês sheep in the same region and under the same conditions were not affected, which suggests lower susceptibility of these animals. RESUMO: A doença foi estudada em uma propriedade localizada no município de Castanhal, Pará, no período de dezembro de 2009 a dezembro de 2012. A propriedade possuía um plantel de 117 ovinos, 45 da raça Santa Inês e 72 Texel. Dos 72 ovinos da raça Texel, 56 estavam afetados. Os principais sinais clínicos observados foram alopecia, eritema, edema, hiperpigmentação e crostas nas orelhas, parte superior da cabeça e ao redor dos olhos. Em alguns animais as orelhas estavam deformadas, espessadas e com abscessos e/ou miíase. Histologicamente, as lesões caracterizavam-se por hiperqueratose ortoqueratótica, acantose, vacuolização e necrose das células da epiderme. Na derme havia infiltrado inflamatório composto principalmente por eosinófilos e macrófagos, edema e deposição de colágeno. Entre os insetos capturados foram identificados 294 exemplares de Culicoides (Hoffmania) plaumanni Spinelli, 57 de Culicoides (Hoffmania) insignis Lutz e 27 exemplares pertencentes a outras espécies de Culicoides. Conclui-se que C. plaumanni, C. insignis e, possivelmente, outras espécies de Culicoides estejam envolvidos na etiologia da dermatite alérgica nos ovinos da raça Texel no estado do Pará. Ovinos da raça Santa Inês que se encontravam na mesma área e nas mesmas condições não foram afetados, sugerindo menor susceptibilidade.
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- 2017
20. Frequency of antibodies against Toxoplasma gondii and Borrelia spp. in domiciled dogs at the Municipality of Castanhal in the State of Pará
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Pacheco, Adlilton, Bahia, Michele, Cordeiro, Matheus Dias, Prado, Welton Seabra, Scofield, Alessandra, Cavalcante, Gustavo Góes, and da Fonseca, Adivaldo Henrique
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education ,Cães ,Borrelia ,Pará State ,ambiente ,infection ,ecotourism ,Dogs ,ecoturismo ,infecção ,educación ,Estado do Pará ,environment ,Toxoplasma - Abstract
Pacheco A., Bahia M., Cordeiro M.D., Prado W.S., Scofield A., GoesCavalcante G., Fonseca A.H. [Frequency of antibodies against Toxoplasma gondii and Borrelia spp. in domiciled dogs at the Municipality of Castanhal in the State of Pará.] Frequência de anticorpos contra Toxoplasma gondii e Borrelia spp. em cães domiciliados do município de Castanhal, estado do Pará Revista Brasileira de Medicina Veterinária, 38(supl. 3): 122-128, 2016. Laboratório de Doenças Parasitárias, Departamento de Epidemiologia e Saúde Pública, Instituto de Veterinária, Universidade Federal Rural de Rio de Janeiro, BR 465, Km 7, 23890-000, Seropédica, RJ, Brasil. Email: adivaldofonseca@yahoo.com Domestic dogs can be infected by different zoonotic agents, assuming an epidemiological importance in the spatial distribution of these agents. The objective was to detect the frequency of antibodies against Toxoplasma gondii and B. burgdorferi lato sensu in dogs in the city of Castanhal, State of Para, Brazil. 186 dogs were studied (male = 88, female = 98) of different age groups (0-6 months> 6 months to 2 years> 2 years). Samples were collected for convenience in 148 animals domiciled in urban districts and 38 dogs resident in the rural area. Antibodies against T. gondii and B. burgdorferi lato sensu were detected in 59.7% and 80.1% of the animals examined, respectively. Antibodies against the two agents were detected in 48.4% (90/186) of the dogs. It is concluded that domestic dogs domiciled in urban and rural areas of the municipality of Castanhal, in the state of Pará, are exposed to infection by T. gondii and B. burgodoferi lato sensu, with animals aged over two years being the most frequent infected., Os cães domésticos podem ser infectados por diferentes agentes zoonóticos, assumindo uma importância epidemiológica na distribuição espacial destes agentes. O objetivo do presente trabalho foi detectar a frequência de anticorpos contra Toxoplasma gondii e B. burgdorferi lato sensu em cães domiciliados no município de Castanhal, estado do Pará, Brasil. Foram estudados 186 cães (machos= 88, fêmeas= 98) de diferentes faixas etárias (0 a 6 meses, >6 meses a 2 anos, > 2 anos). As coletas das amostras foram realizadas por conveniência em 148 animais domiciliados em bairros localizados na zona urbana e 38 cães residentes na zona rural. Anticorpos contra T. gondii e B. burgdorferi lato sensu foram detectados em 59,7% e 80,1% dos animais examinados, respectivamente. Anticorpos contra os dois agentes foram detectados em 48,4% (90/186) dos cães. Conclui-se que os cães domésticos domiciliados em áreas urbana e rural do município de Castanhal, estado do Pará, são expostos à infecção por T. gondii e B. burgodoferi lato sensu, sendo os animais com faixa etária superior a dois anos os mais frequentemente infectados.
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- 2016
21. Reemergência da infecção natural por Trypanosoma evansi em cavalos, na região do Arari, Ilha do Marajó, Brazil
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Silva, Josileide Araújo da, Domiciano, Tarcísio Oliveira, Montão, Daniele Pina, Sousa, Paulo Geovani Silva, Ramos, Leandro Lopes, Paredes, Laura Jamille Argolo, Monteiro, Silvia Gonzalez, Rivero, Gabriela Riet Correa, Scofield, Alessandra, Bezerra Júnior, Pedro, Bezerra, Isis Abel, and Cerqueira, Valíria Duarte
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trypanosomiasis ,Ilha de Marajó ,Marajó Island ,equids ,equídeos ,tripanossomíase ,Pará - Abstract
Two outbreaks of trypanosomiasis by Trypanosoma evansi in horses in the municipality of Chaves, Marajó Island, Pará State, Brazil are reported. The first outbreak occurred in April 2011 in a farm with 147 horses; of these, 47 (31.97%) got sick, and 40 (27.21%) died. The second outbreak occurred in May 2012 and involved nine properties. Of a total of 679 horses, 209 (30.07%) got sick, and 183 (26.97%) died. The main clinical signs observed in these horses were weight loss, abdominal edema, toe dragging, and pelvic muscle atrophy. Necropsy was performed in two horses, one from each outbreak. Macroscopic alterations were not seen in the horse from the first outbreak; however, the horse from the second outbreak exhibited emaciation, pallor and icterus, as well as enlarged spleen with prominent white pulp at cut surface. Histopathology of the central nervous system of both animals revealed mild to severe, diffuse lymphoplasmacytic encephalitis, with presence of Mott cells. Immunohistochemistry for T. evansi revealed structures similar to intralesional trypomastigote forms. Between November and December of 2013, an epidemiological survey was carried out in the municipalities of Cachoeira do Arari, Santa Cruz do Arari, Salvaterra, Soure, and Chaves. Only Santa Cruz do Arari and Chaves had reported cases of the disease. Blood samples were collected from 243 horses for detection of T. evansi DNA by polymerase chain reaction (PCR) and 20 were positive. RESUMO: São relatados dois surtos de tripanossomíase por Trypanosoma evansi , em cavalos no município de Chaves, Ilha do Marajó, Pará, Brasil. O primeiro surto ocorreu em abril de 2011 em uma fazenda com 147 cavalos, em que 47 (31,97%) adoeceram e 40 (27,21%) morreram. O segundo ocorreu em maio de 2012 e envolveu nove propriedades. De um total de 679 cavalos, 209 (30,07%) adoeceram e 183 (26,97%) morreram. Os principais sinais clínicos observados foram perda de peso, edema abdominal, emboletamento dos membros e atrofia da musculatura da região pélvica e membros posteriores. A necropsia foi realizada em dois cavalos, um de cada surto. O equino do primeiro surto não apresentou lesões macroscópicas, enquanto o segundo, do segundo surto, apresentava emagrecimento, palidez e icterícia, aumento do baço com protrusão da polpa branca ao corte. O sistema nervoso central de ambos os animais revelou uma leve à severa encefalite linfoplasmocitária, difusa, com presença de células de Mott. A imunohistoquímica para T. evansi revelou estruturas similares a formas tripomastigotas nas lesões. Entre novembro e dezembro de 2013, um levantamento epidemiológico foi realizado nos municípios de Cachoeira do Arari, Santa Cruz do Arari, Salvaterra, Soure e Chaves. Somente Santa Cruz do Arari e Chaves relataram casos da doença. Foram coletadas amostras de sangue de 243 equinos e realizada a reação em cadeia de polimerase (PCR) para a detecção do DNA de T. evansi das quais 20 foram positivas.
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- 2016
22. Additional file 1: Table S1. of Geographical distribution of Amblyomma cajennense (sensu lato) ticks (Parasitiformes: Ixodidae) in Brazil, with description of the nymph of A. cajennense (sensu stricto)
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Thiago Martins, Barbieri, Amália, Costa, Francisco, Terassini, Flávio, Camargo, Luís, Cássio Peterka, Pacheco, Richard De C., Dias, Ricardo, Nunes, Pablo, Arlei Marcili, Scofield, Alessandra, Campos, Artur, Horta, Mauricio, Guilloux, Aline, Benatti, Hector, Ramirez, Diego, Barros-Battesti, Darci, and Labruna, Marcelo
- Abstract
Records of Amblyomma cajennense sensu stricto (s.s.), Amblyomma sculptum, and Amblyomma cajennense sensu lato (s.l.) that were examined in the tick collections “Acari Colletion of the Instituto Butantan” (IBSP), São Paulo, Brazil, and “Coleção Nacional de Carrapatos” (CNC) of the University of São Paulo, São Paulo, Brazil. (PDF 1091 kb)
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- 2016
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23. Allergic dermatitis caused by Culicoides in Texel sheep in the state of Pará, Brazil
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Oliveira, Carlos Alberto, primary, Silva, Antonio Ozemir Fialho, additional, Cerqueira, Valíria D., additional, Scofield, Alessandra, additional, Almeida, Milton Begeres, additional, Riet-Correa, Franklin, additional, Felippe-Bauer, Maria L., additional, and Riet-Correa, Gabriela, additional
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- 2017
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24. Leishmania infantum infection in dogs from maroon communities in the Eastern Amazon
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Silva, Andréia Ferreira da, primary, Damasceno, Ágatha Rossanni Alves, additional, Prado, Welton Seabra, additional, Caldeira, Rossela Damasceno, additional, Sampaio-Junior, Francisco Dantas, additional, Farias, Diana Maria de, additional, Silva, Laís Cristina Oliveira da, additional, Guimarães, Ricardo José de Paula Souza e, additional, Góes-Cavalcante, Gustavo, additional, and Scofield, Alessandra, additional
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- 2017
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25. Tick and flea infestations in captive Tapirus terrestrisand Tapirus kabomani(Perissodactyla: Tapiridae) in the Brazilian Amazon
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Gonçalves, Thamirys de Souza, Sampaio-Júnior, Francisco Dantas, Barrozo, Pedro Henrique Marques, de Farias, Diana Maria, Alves, Larissa Borges, de Souza, Elda Ely Gomes, de Aguiar, Adriano Bezerra, Nery, Breno William Batista, Gering, Ana Paula, Linardi, Pedro Marcos, Martins, Thiago Fernandes, and Scofield, Alessandra
- Abstract
•First report of adult and nymphs Amblyomma pacaeinfestation on Tapirus terrestris.•First report of T. terrestrisinfestation with Rhopalopsyllus a. australis.•Novel C. f. felisand T. penetransinfestation in captive T. terrestris.•First report of T. kabomaniinfestation with Amblyomma cajennensesensu stricto.
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- 2023
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26. Molecular diagnosis and frequency of anti-Leishmania infantum chagasi antibodies in dogs in Bel?m/Par?, Brazil
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Schwanke, Katiane, Silva, Aryane M. M. da, Pacheco, Adlilton, Bahia, Michele, Silveira, Fernando Tobias, Scofield, Alessandra, and G?es-Cavalcante, Gustavo
- Subjects
C?es ,Leishmaniose Visceral / diagn?stico ,Imunofluoresc?ncia / /utiliza??o ,Leishmania infantum / parasitologia ,Rea??o em Cadeia da Polimerase / m?todos ,Testes Sorol?gicos / m?todos ,Bel?m (PA) - Abstract
Universidade Federal do Par?. Instituto de Medicina Veterin?ria. Laborat?rio de Parasitologia Animal. Castanhal, PA, Brasil. Universidade Federal do Par?. Instituto de Medicina Veterin?ria. Laborat?rio de Parasitologia Animal. Castanhal, PA, Brasil. Universidade Federal do Par?. Instituto de Medicina Veterin?ria. Laborat?rio de Parasitologia Animal. Castanhal, PA, Brasil. Universidade Federal do Par?. Instituto de Medicina Veterin?ria. Laborat?rio de Parasitologia Animal. Castanhal, PA, Brasil. Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Ananindeua, PA, Brasil. Universidade Federal do Par?. Instituto de Medicina Veterin?ria. Laborat?rio de Parasitologia Animal. Castanhal, PA, Brasil. Universidade Federal do Par?. Instituto de Medicina Veterin?ria. Laborat?rio de Parasitologia Animal. Castanhal, PA, Brasil. A leishmaniose visceral ? uma enfermidade cujo agente etiol?gico no Brasil ? o protozo?rio Leishmania infantum chagasi. Os c?es s?o considerados reservat?rios urbanos da doen?a, sendo indicadores da ocorr?ncia de casos humanos. O presente trabalho teve como objetivo diagnosticar a infec??o por L. infantum chagasi em c?es domiciliados e errantes do munic?pio de Bel?m, estado do Par?, atrav?s da rea??o em cadeia da polimerase (PCR) e da rea??o de imunofluoresc?ncia indireta (RIFI), empregando dois ant?genos distintos. Amostras de sangue venoso de c?es adultos, sem distin??o de sexo ou ra?a, de diferentes bairros e ?pocas do ano da cidade de Bel?m-PA, foram colhidas em tubos sem e com anticoagulante para obten??o do soro e do DNA, respectivamente. Esses animais foram divididos em dois grupos: c?es errantes capturados pelo Centro de Controle de Zoonoses (Grupo A) e c?es domiciliados (Grupo B). Os soros foram analisados atrav?s do teste de RIFI para pesquisa de IgG utilizando-se dois ant?genos distintos: 1) ant?geno do kit Bio-Manguinhos/FIOCRUZ (Ag-PRO) contendo formas promastigotas de Leishmania sp. (complexo major-like); 2) Ant?geno do Instituto Evandro Chagas (Ag-AMA) constitu?do por formas amastigotas de L. infantum chagasi. A avalia??o dos dois ant?genos foi realizada com as amostras reagentes a partir da titula??o 1:80. J? a PCR foi realizada a partir do DNA extra?do do sangue total dos animais e amplificado utilizando-se os iniciadores RV1e RV2. Das 335 amostras analisadas, 10,4 por cento (35/335) foram reagentes na RIFI (Ag-PRO) e 0,9 por cento (3/335) reagiram com o Ag-AMA. A distribui??o das amostras positivas se deu da seguinte forma: Grupo A 14,8 por cento (25/169) com Ag-PRO e 1,2 por cento (2/169) com Ag-AMA; Grupo B 6 por cento (10/166) com Ag-PRO e 0,6 por cento (1/166) com Ag-AMA; sendo que todas as amostras positivas pelo teste de RIFI com o Ag-AMA tamb?m reagiram com o Ag-PRO e em nenhuma das amostras foi detectado o DNA de L. infantum chagasi. Os achados do presente estudo indicam que Bel?m ainda pode ser considerada ?rea n?o end?mica para leishmaniose visceral canina e que a natureza do ant?geno influencia no resultado da RIFI para a pesquisa de anticorpos anti-L. infantum chagasi em c?es, sendo que a RIFI que utiliza formas promastigotas de Leishmania major-like como ant?geno deve ser utilizada com cautela como m?todo diagn?stico confirmat?rio em estudos epidemiol?gicos em ?reas n?o end?micas para LVC. Visceral leishmaniasis is a disease whose etiological agent in Brazil is Leishmania infantum chagasi. Dogs are considered urban reservoirs of the disease, being an indicator of the human cases occurrence. The present study aimed to diagnose L. infantum chagasi infection in stray and owned dogs in Bel?m, Par? State, by polymerase chain reaction (PCR) and indirect immunofluorescence assay (IFA) using two different antigens. Venous blood samples from adult dogs, regardless of gender or breed, of different neighborhoods in Bel?m-PA, were collected in tubes with and without anticoagulant to obtain DNA and serum, respectively. These animals were divided into two groups: stray dogs captured by the Center for Zoonosis Control (Group A) and owned dogs (Group B). Sera were analyzed by IFA testing for IgG using two different antigens: 1) Bio-Manguinhos/Fiocruz antigen kit (Ag-PRO) containing promastigotes of Leishmania sp. (Complex Major-Like), 2) Instituto Evandro Chagas Antigen (Ag-AMA) consisting of amastigotes of L. infantum chagasi. The evaluation of the two antigens was performed considering positive the reactions above the 1:80 dilution. Already PCR was performed with DNA isolated from whole blood of animals and amplified with the primers RV1 and RV2. Of the 335 samples analyzed, 10.4 per cent (35/335) were positive by IFA (Ag-PRO) and 0.9 per cent (3/335) with the Ag-AMA. The distribution of positive samples is given as follows: Group A 14.8 per cent (25/169) with Ag-PRO and 1.2 per cent (2/169) with Ag-AMA; Group B 6 per cent (10/166) with Ag-PRO and 0.6 per cent (1/166) with Ag-AMA, being that all samples positive by IFA with Ag-AMA also reacted with Ag-PRO, and none of the samples detected DNA of L. infantum chagasi. The findings of this study indicate that Bel?m can still be considered non-endemic area for canine visceral leishmaniasis and the nature of the antigen influences the result of the IFA for the detection of anti-L. infantum chagasi antibodies in dogs, and the IFA using promastigotes of Leishmania major- -like antigen should be used with caution as a confirmatory diagnostic on epidemiological studies in non-endemic areas.
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- 2014
27. Reemerging of natural infection by Trypanosoma evansi in horses in Arari, Marajó Island, Brazil
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Silva, Josileide Araújo da, primary, Domiciano, Tarcísio Oliveira, additional, Montão, Daniele Pina, additional, Sousa, Paulo Geovani Silva, additional, Ramos, Leandro Lopes, additional, Paredes, Laura Jamille Argolo, additional, Monteiro, Silvia Gonzalez, additional, Rivero, Gabriela Riet Correa, additional, Scofield, Alessandra, additional, Bezerra Júnior, Pedro, additional, Bezerra, Isis Abel, additional, and Cerqueira, Valíria Duarte, additional
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- 2016
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28. Geographical distribution of Amblyomma cajennense (sensu lato) ticks (Parasitiformes: Ixodidae) in Brazil, with description of the nymph of A. cajennense (sensu stricto)
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Martins, Thiago F., primary, Barbieri, Amália R. M., additional, Costa, Francisco B., additional, Terassini, Flávio A., additional, Camargo, Luís M. A., additional, Peterka, Cássio R. L., additional, de C. Pacheco, Richard, additional, Dias, Ricardo A., additional, Nunes, Pablo H., additional, Marcili, Arlei, additional, Scofield, Alessandra, additional, Campos, Artur K., additional, Horta, Mauricio C., additional, Guilloux, Aline G. A., additional, Benatti, Hector R., additional, Ramirez, Diego G., additional, Barros-Battesti, Darci M., additional, and Labruna, Marcelo B., additional
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- 2016
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29. Infestation by Haematopinus quadripertusus on cattle in São Domingos do Capim, state of Pará, Brazil
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Scofield, Alessandra, Campos, Karinny Ferreira, Silva, Aryane Maximina Melo da, Oliveira, Cairo Henrique Sousa, Barbosa, José Diomedes, and Góes-Cavalcante, Gustavo
- Subjects
Pediculosis ,Brasil ,Phthiraptera ,Haematopinus quadripertusus ,bovinos ,piolhos ,lice ,bovines ,Pará ,Brazil ,Pediculose - Abstract
Severe infestation with lice was observed on crossbred cattle (Bos taurus indicus ×Bos taurus taurus) in the municipality of São Domingos do Capim, state of Pará, Brazil. Sixty-five animals were inspected and the lice were manually collected, preserved in 70% alcohol and taken to the Animal Parasitology Laboratory, School of Veterinary Medicine, Federal University of Pará, Brazil, for identification. The adult lice were identified as Haematopinus quadripertusus, and all the cattle examined were infested by at least one development stage of this ectoparasite. The specimens collected were located only on the tail in 80% (52/65) of the cattle, while they were around the eyes as well as on the ears and tail in 20% (13/65). Nits, nymphs and adults of the parasite were respectively collected from 98.46% (64/65), 38.46% (25/65) and 23.08% (15/65) of the animals examined. This is the first report of bovine pediculosis caused by H. quadripertusus in the state of Pará, Brazil. Further studies should be conducted to determine the occurrence pattern of this species in Brazil and its importance to livestock production. Alta infestação por piolhos foi observada em vacas mestiças Bos taurus indicus e Bos taurus taurus do município de São Domingos do Capim, Estado do Pará, Brasil. Sessenta e cinco animais foram inspecionados e os piolhos foram coletados manualmente, armazenados em álcool 70% e transportados ao Laboratório de Parasitologia Animal da Faculdade de Medicina Veterinária da Universidade Federal do Pará para a identificação. Os exemplares adultos foram identificados como Haematopinus quadripertusus e todos os animais examinados apresentaram pelo menos um estágio de desenvolvimento do ectoparasito. Em 80% (52/65) dos animais, os exemplares coletados localizavam-se somente na cauda e em 20% (13/65) na região periocular, orelha e cauda. Lêndeas, ninfas e adultos foram coletados, respectivamente, em 98,46% (64/65), em 38,46% (25/65) e em 23,08% (15/65) dos animais examinados. Esse é o primeiro relato de pediculose bovina causada por H. quadripertusus no estado do Pará e mais estudos devem ser realizados para determinar a ocorrência dessa espécie no Brasil e a sua importância para a pecuária nacional.
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- 2012
30. Infestation by Haematopinus quadripertusus on cattle in São Domingos do Capim, state of Pará, Brazil
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Scofield,Alessandra, Campos,Karinny Ferreira, Silva,Aryane Maximina Melo da, Oliveira,Cairo Henrique Sousa, Barbosa,José Diomedes, and Góes-Cavalcante,Gustavo
- Subjects
Pediculosis ,Phthiraptera ,Haematopinus quadripertusus ,lice ,bovines ,Pará ,Brazil - Abstract
Severe infestation with lice was observed on crossbred cattle (Bos taurus indicus ×Bos taurus taurus) in the municipality of São Domingos do Capim, state of Pará, Brazil. Sixty-five animals were inspected and the lice were manually collected, preserved in 70% alcohol and taken to the Animal Parasitology Laboratory, School of Veterinary Medicine, Federal University of Pará, Brazil, for identification. The adult lice were identified as Haematopinus quadripertusus, and all the cattle examined were infested by at least one development stage of this ectoparasite. The specimens collected were located only on the tail in 80% (52/65) of the cattle, while they were around the eyes as well as on the ears and tail in 20% (13/65). Nits, nymphs and adults of the parasite were respectively collected from 98.46% (64/65), 38.46% (25/65) and 23.08% (15/65) of the animals examined. This is the first report of bovine pediculosis caused by H. quadripertusus in the state of Pará, Brazil. Further studies should be conducted to determine the occurrence pattern of this species in Brazil and its importance to livestock production.
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- 2012
31. First record of notoedric mange in ocelot (Leopardus pardalis Linnaeus, 1758) in the amazon region, Brazil
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Scofield, Alessandra, Santos, Rafaelle Cunha dos, Carvalho, Nadino, Martins, Áurea Linhares, and Góes-Cavalcante, Gustavo
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Amazônia ,jaguatirica ,Brasil ,ocelot ,Notoedres cati ,Amazon ,Brazil - Abstract
This paper describes a case of notoedric mange in an ocelot (Leopardus pardalis) in the Brazilian Amazon region. A young male of approximately four months of age that was illegally kept as a pet was apprehended in Altamira, State of Pará, northern Brazil. The animal was transported to the Mangal das Garças Park in the state's capital city of Belém. The ocelot had pruritus and lesions suggestive of scabies in the head. Skin scraping material was examined under optic microscopy. There was seen a large number of eggs, larvae, nymphs and adult mites. The mean female and male sizes were 230.2 × 200.4 µm and 137.6 × 104.9 µm. Based on the morphologic characteristics and morphometric analysis, this mite was classified as Notoedres cati. This is the first report of notoedric mange in L. pardalis from Brazilian Amazon. O presente estudo descreve um caso de sarna notoédrica em uma jaguatirica (Leopardus pardalis) na região da Amazônia Brasileira. Um macho jovem com aproximadamente quatro meses de idade, ilegalmente mantido como animal de estimação, foi apreendido em uma residência em Altamira, Estado do Pará, Brasil. O animal foi transportado para o Parque Mangal das Garças, município de Belém, estado do Pará. A jaguatirica apresentava prurido e lesões sugestivas de escabiose na cabeça, por isso um raspado cutâneo foi realizado e examinado ao microscópio óptico. Foi observado um grande número de ovos, larvas, ninfas e ácaros adultos. Os exemplares fêmeas mediram em média 230,2 × 200,4 µm, e os exemplares machos mensuraram 137,6 × 104,9 µm. Com base nas características morfológicas e análises morfométricas, o ácaro foi classificado como Notoedres cati. Esse é o primeiro relato da sarna notoédrica em L. pardalis na Amazônia Brasileira.
- Published
- 2011
32. Morphology and morphometry of three Plasmodium juxtanucleare (Apicomplexa: Plasmodiidae) isolates
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Elisei, Carina, Fernandes, Kátia, R., Forlano, Maria D., Madureira, Renata C., Scofield, Alessandra, Yotoko, Karla S. C., Soares, Cleber O., Araújo, Flábio Ribeiro, and Massard, Carlos L.
- Subjects
infecção experimental ,malária ,experimental infection ,avian malaria ,Plasmodium juxtanucleare ,Gallus gallus - Abstract
In this work, three isolates of Plasmodium juxtanucleare have been analyzed based on morphological, morphometric and parasitic parameters. Each isolate was sampled from naturally infected adult chicken (Gallus gallus) from rural areas of three Brazilian municipalities: Seropédica (22º 48' S; 43º 41'W), in the state of Rio de Janeiro; Cruzeiro (22º 33' S; 44º 57'W), in the state of São Paulo; and Santa Bárbara do Tugúrio (21º 15' S; 43º 27' W), in the state of Minas Gerais. The blood samples taken from each infected chicken were inoculated in three groups of ten young chicken (21 days old). Blood smears of the experimentally infected chicken were sampled every two days until the 69th day in order to evaluate the parasitemia. For the morphological-descriptive and morphometric analyses, we measured 30 individuals from each of the intraerythocytic states, measures of the major (MD) and minor diameters (md), the estimation of morphometric index (Mi=md/MD) and size (T=pab, a= md/2; b=MD/2). The results indicated low and homogeneous parasitemia rates in the three strains, which showed differences among shape and size of the parasitic stadia displayed. Neste trabalho, três isolados de Plasmodium juxtanucleare foram analisados com base na morfologia, morfometria e parâmetros parasitológicos. Cada isolado foi coletado de aves (Gallus gallus) adultas infectadas naturalmente de áreas rurais de três municípios brasileiros: Seropédica (22º 48' S; 43º 41' W), no estado do Rio de Janeiro; Cruzeiro (22º 33' S; 44º 57' W), no estado de São Paulo; e Santa Bárbara do Tugúrio (21º 15' S; 43º 27' W), no estado de Minas Gerais. As amostras de sangue coletadas de cada ave infectada foram inoculadas em três grupos de dez aves (21 dias de idade). Esfregaços sangüíneos das aves infectadas experimentalmente foram realizados de dois em dois dias durante um período de 69 dias para avaliar a parasitemia. Para análises morfofisiológica e morfométrica, foram mensurados 30 indivíduos de cada estágio intraeritrocítico. Foram tomadas as medidas do diâmetro maior (DM) e diâmetro menor (dm), com os quais foi estimado o índice morfométrico (Mi=md/MD) e o tamanho (T=pab, a= md/ 2; b=MD/2). Os resultados indicaram uma parasitemia homogênea entre os três isolados, havendo diferenças apenas nas formas e tamanhos dos estádios parasitários.
- Published
- 2007
33. Morphology and morphometry of three Plasmodium juxtanucleare (Apicomplexa: Plasmodiidae) isolates
- Author
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OLIVEIRA, Carina Elisei de, FERNANDES, Kátia Roberta, FORLANO, Maria Dalila, MADUREIRA, Renata Cunha, SCOFIELD, Alessandra, YOTOKO, Karla Suemy Clemente, SOARES, Cleber Oliveira, ARAÚJO, Flábio Ribeiro de, and MASSARD, Carlos Luiz
- Subjects
Parasitologia ,Infecção experimental ,Plasmodium juxtanucleare ,Gallus gallus ,Morfologia ,Morfometria ,Aves - Abstract
Neste trabalho, três isolados de Plasmodium juxtanucleare foram analisados com base na morfologia, morfometria e parâmetros parasitológicos. Cada isolado foi coletado de aves (Gallus gallus) adultas infectadas naturalmente de áreas rurais de três municípios brasileiros: Seropédica (22º 48' S; 43º 41' W), no estado do Rio de Janeiro; Cruzeiro (22º 33' S; 44º 57' W), no estado de São Paulo; e Santa Bárbara do Tugúrio (21º 15' S; 43º 27' W), no estado de Minas Gerais. As amostras de sangue coletadas de cada ave infectada foram inoculadas em três grupos de dez aves (21 dias de idade). Esfregaços sangüíneos das aves infectadas experimentalmente foram realizados de dois em dois dias durante um período de 69 dias para avaliar a parasitemia. Para análises morfofisiológica e morfométrica, foram mensurados 30 indivíduos de cada estágio intraeritrocítico. Foram tomadas as medidas do diâmetro maior (DM) e diâmetro menor (dm), com os quais foi estimado o índice morfométrico (Mi=md/MD) e o tamanho (T=pab, a= md/ 2; b=MD/2). Os resultados indicaram uma parasitemia homogênea entre os três isolados, havendo diferenças apenas nas formas e tamanhos dos estádios parasitários. In this work, three isolates of Plasmodium juxtanucleare have been analyzed based on morphological, morphometric and parasitic parameters. Each isolate was sampled from naturally infected adult chicken (Gallus gallus) from rural areas of three Brazilian municipalities: Seropédica (22º 48' S; 43º 41'W), in the state of Rio de Janeiro; Cruzeiro (22º 33' S; 44º 57'W), in the state of São Paulo; and Santa Bárbara do Tugúrio (21º 15' S; 43º 27' W), in the state of Minas Gerais. The blood samples taken from each infected chicken were inoculated in three groups of ten young chicken (21 days old). Blood smears of the experimentally infected chicken were sampled every two days until the 69th day in order to evaluate the parasitemia. For the morphological-descriptive and morphometric analyses, we measured 30 individuals from each of the intraerythocytic states, measures of the major (MD) and minor diameters (md), the estimation of morphometric index (Mi=md/MD) and size (T=pab, a= md/2; b=MD/2). The results indicated low and homogeneous parasitemia rates in the three strains, which showed differences among shape and size of the parasitic stadia displayed.
- Published
- 2007
34. Diagnóstico molecular e frequência de anticorpos anti-Leishmania infantum chagasi em cães do município de Belém, Pará
- Author
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Schwanke, Katiane, primary, Silva, Aryane M.M. da, additional, Pacheco, Adlilton, additional, Bahia, Michele, additional, Silveira, Fernando T., additional, Scofield, Alessandra, additional, and Góes-Cavalcante, Gustavo, additional
- Published
- 2014
- Full Text
- View/download PDF
35. Diagnóstico molecular da infecção por hemoplasmas em gatos domésticos naturalmente infectados da cidade de Belém, Pará
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Aragão-de-Sousa, Sinerey K.S., primary, Sampaio-Junior, Francisco D., additional, Sousa, Luciane O., additional, Santos, Rafaelle C., additional, Gonçalves, Evonnildo C., additional, Scofield, Alessandra, additional, and Góes-Cavalcante, Gustavo, additional
- Published
- 2013
- Full Text
- View/download PDF
36. Infestation by Haematopinus quadripertusus on cattle in São Domingos do Capim, state of Pará, Brazil
- Author
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Scofield, Alessandra, primary, Campos, Karinny Ferreira, additional, Silva, Aryane Maximina Melo da, additional, Oliveira, Cairo Henrique Sousa, additional, Barbosa, José Diomedes, additional, and Góes-Cavalcante, Gustavo, additional
- Published
- 2012
- Full Text
- View/download PDF
37. First record of notoedric mange in ocelot (Leopardus pardalis Linnaeus, 1758) in the amazon region, Brazil
- Author
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Scofield, Alessandra, primary, Santos, Rafaelle Cunha dos, additional, Carvalho, Nadino, additional, Martins, Áurea Linhares, additional, and Góes-Cavalcante, Gustavo, additional
- Published
- 2011
- Full Text
- View/download PDF
38. Morphology and morphometry of three Plasmodium juxtanucleare (Apicomplexa: Plasmodiidae) isolates
- Author
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Elisei, Carina, primary, Fernandes, Kátia, R., additional, Forlano, Maria D., additional, Madureira, Renata C., additional, Scofield, Alessandra, additional, Yotoko, Karla S. C., additional, Soares, Cleber O., additional, Araújo, Flábio Ribeiro, additional, and Massard, Carlos L., additional
- Published
- 2007
- Full Text
- View/download PDF
39. Soroprevalência de Anaplasma marginale em bovinos na mesorregião Norte Fluminense
- Author
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Souza, José Carlos P., primary, Soares, Cleber O., additional, Massard, Carlos L., additional, Scofield, Alessandra, additional, and Fonseca, Adivaldo H., additional
- Published
- 2000
- Full Text
- View/download PDF
40. Soroprevalência de Babesia bigemina em bovinos na mesorregião Norte Fluminense
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Souza, José Carlos P., primary, Soares, Cleber O., additional, Scofield, Alessandra, additional, Madruga, Claudio R., additional, Cunha, Nathalie C., additional, Massard, Carlos L., additional, and Fonseca, Adivaldo H., additional
- Published
- 2000
- Full Text
- View/download PDF
41. Larvicidal activity of the crude methanolic extract from leaves of Clibadium surinamense against Aedes aegypti.
- Author
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Soares da Cruz, Andrely de Jesus, da Silva e Silva, Wanessa Rendeiro, dos Santos Cruz, Juliana, Dantas Sampaio-Júnior, Francisco, Barros Monteiro, Maria Vivina, Hamoy, Moises, Scofield, Alessandra, and Góes-Cavalcante, Gustavo
- Subjects
- *
AEDES aegypti , *ONE-way analysis of variance , *NATURAL selection , *PLANT extracts , *MOSQUITOES , *PYRETHROIDS - Abstract
The continuous use of synthetic insecticides for controlling the arboviral vector Aedes aegypti has led to the natural selection of mosquito populations resistant to different chemical groups. Thus, plant-derived compounds have emerged as a viable alternative for vectorcontrol. This study determined whether the crude methanolic extract (CME) from leaves of Clibadium surinamense has larvicidal activity against Ae. aegypti. Third- and fourth-instar Ae. Aegyptilarvae were kept in recipients containing 99 mL of water and 1mL of ethanoldiluted CMEat concentrations of 250, 500, 750, and 1000 ppm. The control group contained 99 mL of water and 1 mL of ethanol. Three trials were performed in triplicate for each group.After 24 hours of treatment, the LC50 and LC90 values were determined to be 283 and 430 ppm, respectively, according to one-way analysis of variance. In conclusion, we have demonstrated for the first time that the CME from leaves of C. surinamense show larvicidal activity against Ae. aegypti under laboratory conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
42. Occurrence of eggs and oocysts of gastrointestinal parasites in passerine birds kept in captivity in Para State, Brazil.
- Author
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Cesar Magalhães-Matos, Paulo, do Vale Silva, Michele Bahia, Silva Souza, Paulo Geovani, da Silva Lima, Danillo Henrique, de Morais, Rodrigo, de Farias, Diana Maria, Oliveira Alvarenga, Laís Cristina, Martins Gabriel, Áurea, Lima Oliveira, Wanessa Batista, Góes-Cavalcante, Gustavo, and Scofield, Alessandra
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PASSERIFORMES , *BIRD eggs , *BIRD diseases , *COCCIDIA , *GASTROINTESTINAL diseases , *POTASSIUM dichromate - Abstract
The objective of this study was to detect helminth eggs and protozoan oocysts in samples of feces from birds of the order Passeriformes in Para State, Brazil. Fecal samples were collected individually from 403 passerine birds seized and kept in captivity in Para State. Samples were processed by the double centrifugation technique in saturated sucrose solution and the coccidial oocystpositive samples were submitted to sporulation in potassium dichromate 2.0%. Helminth eggs and/or protozoan oocysts were observed in 43.18% (174/403) of the fecal samples examined. Coccidial oocysts were detected in 93.68% (163/174) of the positive samples, whereas helminth eggs were observed in 10.34% (18/174) of the positive samples. Oocyst sporulation occurred in 43.56% (71/163) of the samples, and only Isospora spp. oocysts were detected. Nematode eggs of the superfamilies Trichostrongyloidea (4.60%; 8/174), Ascaridoidea (0.57%; 1/174), and Trichuroidea (0.57%; 1/174) were diagnosed in the positive samples. Cestoda eggs were diagnosed in 2.87% (5/174), whereas Trematoda eggs were detected in 2.30% (4/174) of positive samples. Passerine birds seized and kept in captivity in the visited local presented parasitism by intestinal helminths and protozoan, with a predominance of infection with coccidia of the gender Isospora. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
43. Campanha Nacional de verminoses: impacto e an?lises das infec??es por geo-helmintos em escolares no munic?pio de Bel?m estado do Par?, Brasil
- Author
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Prestes, Sheila Paula da Costa, Guimar?es, Ricardo Jos? de Paula Souza e, Ventura, Ana Maria Revoredo da Silva, Matos, Haroldo Jos? de, Scofield, Alessandra, Chaves, T?nia do Socorro Souza, and Enk, Martin Johannes
- Subjects
Pr?-Escolar / educa??o ,Helmint?ase / tratamento farmacol?gico ,Campanha Nacional de Geo-helmintos ,Helmint?ase / diagn?stico ,Solo / parasitologia - Abstract
Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Programa de P?s-Gradua??o em Epidemiologia e Vigil?ncia em Sa?de. Ananindeua, PA, Brasil. Visando ao fortalecimento das a??es de vigil?ncia das geohelmint?ases, o Minist?rio da Sa?de prop?e desde 2013, a realiza??o da Campanha Nacional dos Geo- helmintos que preconiza o tratamento preventivo e coletivo com um comprimido de Albendazol de 400mg em crian?as de cinco a 14 anos das escolas p?blicas dos munic?pios brasileiros. O objetivo deste estudo foi determinar o perfil epidemiol?gico das infec??es por geo-helmintos nos escolares abrangidos pela Campanha Nacional de Verminoses no munic?pio de Bel?m, Par? em 2016. Tratou-se de um estudo descritivo, documental, de abordagem quantitativa utilizando dados secund?rios de resultados de exames de fezes antes, um m?s e doze meses ap?s tratamento, obtidos do Sistema de Informa??o do Programa de Vigil?ncia e Controle da Esquistossomose (SISPCE) disponibilizados pela Secretaria Municipal de Sa?de (SESMA) do estado do Par?. Os participantes foram alunos de cinco a 14 anos da rede p?blica de ensino fundamental do Distrito Administrativo do Guam? (DAGUA), abrangidos e tratados como preconizado pela campanha com um comprimido de Albendazol de 400mg. Os achados neste estudo mostraram que crian?as com idade entre cinco a 9 anos s?o as mais acometidas pelos geo-helmintos e que os escolares do sexo masculino, uma vez tratados e curados para as geo-helmint?ases estes tem tr?s vezes mais chances de se reinfectarem ap?s um ano. No presente estudo confirmamos que a campanha nacional de geo-helmint?ases ? uma importante estrat?gia capaz de controlar as infec??es por geo-helmintos, j? que consegue curar as infec??es por Ascaris lumbricoides. No entanto, uma ?nica dose de albendazol mostra pouca efic?cia para as infec??es por T. trichiura nos escolares.
- Published
- 2018
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