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1.
Braz J Microbiol ; 55(2): 2035-2041, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38713279

ABSTRACT

Salmonella spp. and Escherichia coli are implicated in human and animal infections and require antimicrobial treatment in many situations. Faecal samples of healthy white-lipped peccaries (Pecari tajacu) (n = 30) and collared peccaries (Tayassu pecari ) (n = 60) obtained in three farms located in the Midwest Brazil. The antimicrobial profiles of commensal E. coli from P. tajacu and T. pecari from commercial herds in Brazil were isolated and analyzed and virulence genes were detected. Among 90 healthy animals, no Salmonella spp. were isolated. However, 30 samples (27%) tested positive for E. coli, with 18 isolates from P. tajacu and 12 from T. pecari, representing frequencies of 58.0% and 38.7%, respectively. Additionally, other Enterobacteriaceae family bacteria were detected but not included in this analysis. However, individual samples from 30 animals tested positive for E. coli, of which 16 were isolated from P. tajacu presenting multidrug resistance and six were isolated from T. pecari presenting a similar pattern. The E. coli virulence genes detected were papC (pilus-associated pyelonephritis) in five isolates, tsh (temperature-sensitive hemagglutinin) in one isolate, and eae (enteric attachment and effacement) in one isolate. The serum resistance gene, iss (increased serum survival), was detected in four isolates. An association between these genes and the presence of hemolysin was also observed in one isolate. Thus, T. pecari and P. tajacu are potential reservoirs of pathogenic and multidrug-resistant and E. coli. Faecal E. coli of healthy P. tajacu and T. pecari could act as a possible reservoir of antimicrobial resistance genes in environment.


Subject(s)
Anti-Bacterial Agents , Artiodactyla , Escherichia coli , Feces , Salmonella , Virulence Factors , Animals , Escherichia coli/genetics , Escherichia coli/drug effects , Escherichia coli/isolation & purification , Escherichia coli/pathogenicity , Escherichia coli/classification , Salmonella/genetics , Salmonella/drug effects , Salmonella/isolation & purification , Salmonella/pathogenicity , Salmonella/classification , Brazil , Virulence Factors/genetics , Anti-Bacterial Agents/pharmacology , Feces/microbiology , Artiodactyla/microbiology , Escherichia coli Infections/microbiology , Escherichia coli Infections/veterinary , Escherichia coli Infections/epidemiology , Salmonella Infections, Animal/microbiology , Virulence/genetics , Prevalence , Drug Resistance, Bacterial/genetics , Microbial Sensitivity Tests
2.
Ci. Anim. bras. ; 21: e-58640, Aug. 6, 2020. ilus, tab
Article in English | VETINDEX | ID: vti-32005

ABSTRACT

The aim of this study was to perform the immunostaining of MMP-9 and MMP-2 and its inhibitors, TIMP-1 and TIMP-2, on normal and neoplastic canine mammary tissue in order to evaluate the behavior of these proteins in extracellular matrix (ECM) remodeling in different neoplastic mammary types. Thus, 48 samples of canine mammary tissue were analyzed, 14 of which complex carcinomas, 13 tubulopapillary carcinomas, six single adenomas and 15 normal mammary tissue. There were differences in MMP-9, TIMP-1 and TIMP-2 according to mammary histomorphology, and MMP-9 presented increased immunoexpression in epithelial and stromal cells in tubulopapillary and complex carcinomas. TIMP-1 exhibited reduced immunostaining in the stromal cells of the complex carcinomas and TIMP-2 enhanced immunostaining in the epithelial cells of tubulopapillary carcinomas. There was a positive correlation between MMP-9 and TIMP-1 in epithelial and stromal cells regarding immunostaining intensity and number of labeled cells in the normal breast. There was a positive correlation between MMP-9 and TIMP-2 in the epithelial cells of tubulopapillary carcinomas. It is concluded that balanced activity between MMP-9, MMP-2, TIMP-1 and TIMP-2 maintains normal canine mammary tissue homeostasis while increased immunoexpression of MMP-9 and TIMP-2 and reduced TIMP- 1 in carcinomas suggest a favorable condition for tumor evolution.(AU)


Este estudo teve como objetivo realizar a imunomarcação de MMP-9 e MMP-2 e seus inibidores, TIMP-1 e TIMP-2, no tecido mamário canino normal e neoplásico, a fim de avaliar o comportamento dessas proteínas no remodelamento da matriz extracelular (MEC) em diferentes tipos neoplásicos mamários. Foram analisadas 48 amostras de tecido mamário canino, sendo 14 carcinomas complexos, 13 carcinomas tubulopapilares, seis de adenomas simples e 15 mamas sem alterações. Houve diferença em MMP-9, TIMP-1 e TIMP-2 de acordo com a histomorfologia mamária, sendo que MMP-9 apresentou maior imunoexpressão em células epiteliais e estromais em carcinomas tubulopapilares e complexos. TIMP-1 exibiu menor imunomarcação nas células estromais dos carcinomas complexos e TIMP-2 maior imunomarcação nas células epiteliais dos carcinomas tubulopapilares. Houve correlação positiva entre MMP-9 e TIMP-1 nas células epiteliais e estromais quanto à intensidade de imunomarcação e número de células marcadas na mama normal. Houve correlação positiva entre MMP-9 e TIMP-2 nas células epiteliais dos carcinomas tubulopapilares. Conclui-se que a atividade equilibrada entre MMP-9, MMP-2, TIMP-1 e TIMP-2 mantém a homeostase do tecido mamário canino normal enquanto a imunoexpressão aumentada de MMP-9 e TIMP-2 e a imunoexpressão reduzida de TIMP-1 nos carcinomas sugere condição propícia à evolução tumoral.(AU)


Subject(s)
Animals , Female , Dogs , Matrix Metalloproteinase 9/immunology , Matrix Metalloproteinase 2/immunology , Tissue Inhibitor of Metalloproteinase-2 , Tissue Inhibitor of Metalloproteinase-1 , Mammary Glands, Animal/cytology , Mammary Neoplasms, Animal , Immunohistochemistry/veterinary , Homeostasis
3.
Parasitology ; 147(12): 1313-1319, 2020 10.
Article in English | MEDLINE | ID: mdl-32624014

ABSTRACT

Bovine trypanosomosis has been spreading in Brazil. In the present study, we evaluated the spatial distribution, prevalence and risk factors of this disease in the state of Goiás, Brazil, and performed both molecular and phylogenetical analyses of Trypanosoma vivax. A total of 4049 blood samples were collected from cattle for a period of 2 years. The parasitological diagnosis was performed using the Woo method and a questionnaire was administered to the farmers to document risk factors associated with the disease in the herd. Positive samples were DNA sequenced and compared to GenBank codes. The prevalence of T. vivax was 8.84%, occurring on 24 ranches only in dairy cattle and mainly in the central and southern portions of the state. The acquisition of new animals infected with T. vivax and the administration of exogenous oxytocin to cows using the same syringe and needle were the main associated factors (P ≤ 0.05). After an outbreak, milk production decreased by 39.62%. The presence of biting flies (tabanids, Haematobia irritans and Stomoxys calcitrans) was not a risk factor (P > 0.05) for the occurrence of T. vivax. The epidemiological data demonstrate the importance of restricting the practice of auctions as well as eliminating the use of exogenous oxytocin in animals during milking. The samples tested by polymerase chain reaction were positive for T. vivax and were genetically homologous with T. vivax found in different states of Brazil and west Africa based on the 18S rRNA gene.


Subject(s)
Trypanosoma vivax , Trypanosomiasis, Bovine/epidemiology , Animals , Cattle , Cattle Diseases/epidemiology , DNA, Protozoan , Disease Outbreaks/veterinary , Pathology, Molecular , Prevalence , RNA, Ribosomal, 18S/genetics , Risk Factors , Trypanosoma vivax/genetics , Trypanosoma vivax/isolation & purification
4.
Prev Vet Med ; 181: 105040, 2020 Aug.
Article in English | MEDLINE | ID: mdl-32516747

ABSTRACT

In this study, we evaluated the therapeutic efficacy of diminazene diaceturate at a dose of 7 mg/kg (DA), imidocarb dipropionate at 4.8 mg/kg (IMD), isometamidium chloride at 0.5 and 1.0 mg/kg (ISM 0.5 and ISM 1.0) and combinations applied through different methods to treat Trypanosoma vivax in experimentally infected calves. Thirty male Girolando calves were kept indoors and infected intravenously with T. vivax trypomastigotes (approximately 1 × 106). On D-1, the calves were randomized based on the quantity of infecting parasites per animal, yielding six groups of five animals each: G1: positive control group without treatment; G2 animals treated with DA on Day 0 intramuscularly (IM); G3 animals treated with IMD on Day 0 and D + 14 subcutaneously; G4 animals treated with ISM 0.5 on Day 0 IM; G5 animals treated with ISM 1.0 on Day 0 IM; G6 animals received DA on Day 0 and ISM 1.0 on D + 14, both IM. Throughout 180 days, blood samples were collected for the evaluation of T. vivax using the Woo, Brener and PCR methods. The results indicated that the treatment protocols with DA and/or ISM 0.5 and ISM 1.0 had high efficacy (100 %) against T. vivax. Interestingly, cattle that received ISM remained free of parasites until D + 180. In contrast, animals treated with IMD had relapsed T. vivax detected on the 10th and 14th days post-treatment (DPT). Cattle that received ISM 1.0 did not exhibit relapsed T. vivax in the blood, even after reinfection performed on the 50th DPT. However, treatment with DA on Day 0 failed to prevent a new infection of T. vivax on the 50th DPT. The animals that received ISM 1.0 had a transient decrease in packed cell volume similar to that found in the control group. The reappearance of T. vivax in herds in Brazil treated with DA likely occurred due to the short half-life of the drug and not necessarily due to T. vivax resistance to DA.


Subject(s)
Diminazene/analogs & derivatives , Imidocarb/analogs & derivatives , Phenanthridines/pharmacology , Trypanocidal Agents/pharmacology , Trypanosoma vivax/drug effects , Trypanosomiasis, African/prevention & control , Trypanosomiasis, Bovine/prevention & control , Animals , Cattle , Diminazene/pharmacology , Dose-Response Relationship, Drug , Imidocarb/pharmacology , Male
5.
Exp Parasitol ; 211: 107861, 2020 Feb 21.
Article in English | MEDLINE | ID: mdl-32112944

ABSTRACT

The aim of the present study was to compare the infection capacity of Trypanosoma vivax experimentally inoculated through different routes in calves naturally infected with latent Anaplasma marginale. On Day 0 of the study, 25 calves (breed: Girolando) were divided into five groups. The first four groups of five calves each received approximately 1 × 106 trypomastigotes of T. vivax through the intradermal, subcutaneous, intramuscular and intravenous routes. Another five animals remained unaffected to serve as A. marginale naturally infected controls. The study of T. vivax was performed on all calves from D+1 to D+30 using the Woo, Brener and blood smear techniques. PCR was performed on Days +1, +3, +4, +5, +28, +29 and + 30. The results indicated that T. vivax was capable of infecting and developing the disease in the calves independent of the inoculation route. A positive correlation was found between T. vivax and rectal temperature (P ≤ 0.05) and a negative correlation was seen between the protozoan and globular volume (P ≤ 0.05). Latent A. marginale in the calves acted as co-infection for T. vivax. Jaundice was seen only in calves with a high parasitemia by A. marginale. Therefore, in areas with the confirmed presence of T. vivax in bovines, this protozoan should be included in the complex denominated "Bovine Parasitic Sadness", which currently encompasses only Anaplasma and Babesia.

6.
Ciênc. anim. bras. (Impr.) ; 21: e, 23 mar. 2020. ilus, tab
Article in English | VETINDEX | ID: biblio-1473765

ABSTRACT

The aim of this study was to perform the immunostaining of MMP-9 and MMP-2 and its inhibitors, TIMP-1 and TIMP-2, on normal and neoplastic canine mammary tissue in order to evaluate the behavior of these proteins in extracellular matrix (ECM) remodeling in different neoplastic mammary types. Thus, 48 samples of canine mammary tissue were analyzed, 14 of which complex carcinomas, 13 tubulopapillary carcinomas, six single adenomas and 15 normal mammary tissue. There were differences in MMP-9, TIMP-1 and TIMP-2 according to mammary histomorphology, and MMP-9 presented increased immunoexpression in epithelial and stromal cells in tubulopapillary and complex carcinomas. TIMP-1 exhibited reduced immunostaining in the stromal cells of the complex carcinomas and TIMP-2 enhanced immunostaining in the epithelial cells of tubulopapillary carcinomas. There was a positive correlation between MMP-9 and TIMP-1 in epithelial and stromal cells regarding immunostaining intensity and number of labeled cells in the normal breast. There was a positive correlation between MMP-9 and TIMP-2 in the epithelial cells of tubulopapillary carcinomas. It is concluded that balanced activity between MMP-9, MMP-2, TIMP-1 and TIMP-2 maintains normal canine mammary tissue homeostasis while increased immunoexpression of MMP-9 and TIMP-2 and reduced TIMP- 1 in carcinomas suggest a favorable condition for tumor evolution.


Este estudo teve como objetivo realizar a imunomarcação de MMP-9 e MMP-2 e seus inibidores, TIMP-1 e TIMP-2, no tecido mamário canino normal e neoplásico, a fim de avaliar o comportamento dessas proteínas no remodelamento da matriz extracelular (MEC) em diferentes tipos neoplásicos mamários. Foram analisadas 48 amostras de tecido mamário canino, sendo 14 carcinomas complexos, 13 carcinomas tubulopapilares, seis de adenomas simples e 15 mamas sem alterações. Houve diferença em MMP-9, TIMP-1 e TIMP-2 de acordo com a histomorfologia mamária, sendo que MMP-9 apresentou maior imunoexpressão em células epiteliais e estromais em carcinomas tubulopapilares e complexos. TIMP-1 exibiu menor imunomarcação nas células estromais dos carcinomas complexos e TIMP-2 maior imunomarcação nas células epiteliais dos carcinomas tubulopapilares. Houve correlação positiva entre MMP-9 e TIMP-1 nas células epiteliais e estromais quanto à intensidade de imunomarcação e número de células marcadas na mama normal. Houve correlação positiva entre MMP-9 e TIMP-2 nas células epiteliais dos carcinomas tubulopapilares. Conclui-se que a atividade equilibrada entre MMP-9, MMP-2, TIMP-1 e TIMP-2 mantém a homeostase do tecido mamário canino normal enquanto a imunoexpressão aumentada de MMP-9 e TIMP-2 e a imunoexpressão reduzida de TIMP-1 nos carcinomas sugere condição propícia à evolução tumoral.


Subject(s)
Female , Animals , Dogs , Mammary Glands, Animal/cytology , Tissue Inhibitor of Metalloproteinase-1 , /immunology , Matrix Metalloproteinase 9/immunology , Homeostasis , Immunohistochemistry/veterinary , Mammary Neoplasms, Animal
7.
Ci. Anim. bras. ; 20: e-34543, Aug. 22, 2019. ilus, tab, graf
Article in Portuguese | VETINDEX | ID: vti-21875

ABSTRACT

O fator de crescimento transformador-β (TGF-β), um mediador do crescimento prostático, induz a angiogênese e inibe a proliferação celular. Neste estudo, esse marcador foi utilizado com o objetivo de avaliar sua imunomarcação no tecido normal e com lesões proliferativas benignas, pré-neoplásicas e neoplásicas da próstata canina. Para isso, foram selecionadas 54 glândulas com histomorfologia normal, hiperplasia prostática benigna (HPB) epitelial, HPB estromal, atrofia inflamatória proliferativa (PIA), neoplasia intraepitelial prostática (PIN) e carcinoma, utilizadas para a confecção de um bloco de microarranjo tecidual (Tissue Microarray - TMA). As lâminas de TMA foram submetidas à técnica de imunoistoquímica com o anticorpo anti-TGF-β, sendo avaliada a intensidade de imunomarcação nas células epiteliais e estromais. Houve imunomarcação de TGF-β no tecido normal e naqueles com lesões proliferativas. Maior imunomarcação de TGF-β foi constatada nas células do tecido prostático normal e com HPB, enquanto as células prostáticas com PIA, PIN e carcinoma exibiram menor imunomarcação dessa citocina, o que sugere a ação do TGF-β na manutenção da homeostase do tecido normal e com lesão proliferativa benigna e na progressão das lesões proliferativas pré-malignas e malignas da próstata canina.(AU)


The transforming growth factor-β (TGF-β), a mediator of prostatic growth induces angiogenesis and inhibits cell proliferation. It was used in this study in order to evaluate its expression in normal prostatic tissue and those with benign proliferative lesions, pre-malignant and malignant prostatic diseases. A total of 54 glands with normal histomorphology, epithelial benign prostatic hyperplasia (BPH), stromal BPH, prostatic inflammatory atrophy (PIA), prostatic intraepithelial neoplasia (PIN), and adenocarcinoma were selected and used in the tissue microarray block (TMA). The TMA slides were subjected to the immunohistochemistry with anti-TGF-β and its staining intensity in epithelial and stromal cells was evaluated. There was TGF-β immunostaining by both normal tissues and those with proliferative lesions. Higher TGF-β immunostaining was observed in cells from normal prostatic tissues and with HPB, whereas prostatic cells with PIA, PIN and carcinoma exhibited lower immunostaining of this cytokine, suggesting the action of TGF-β in the maintenance of normal tissue homeostasis and with benign proliferative lesion and in the progression of pre-malignant and malignant proliferative lesions of the canine prostate.(AU)


Subject(s)
Animals , Male , Dogs , Transforming Growth Factor beta/analysis , Prostatic Diseases/diagnosis , Prostatic Diseases/veterinary , Carcinoma/diagnosis , Prostatic Intraepithelial Neoplasia/diagnosis , Prostatic Intraepithelial Neoplasia/veterinary , Immunohistochemistry/veterinary
8.
Ciênc. anim. bras. (Impr.) ; 20: e, 2019. ilus, tab, graf
Article in Portuguese | VETINDEX | ID: biblio-1473688

ABSTRACT

O fator de crescimento transformador-β (TGF-β), um mediador do crescimento prostático, induz a angiogênese e inibe a proliferação celular. Neste estudo, esse marcador foi utilizado com o objetivo de avaliar sua imunomarcação no tecido normal e com lesões proliferativas benignas, pré-neoplásicas e neoplásicas da próstata canina. Para isso, foram selecionadas 54 glândulas com histomorfologia normal, hiperplasia prostática benigna (HPB) epitelial, HPB estromal, atrofia inflamatória proliferativa (PIA), neoplasia intraepitelial prostática (PIN) e carcinoma, utilizadas para a confecção de um bloco de microarranjo tecidual (Tissue Microarray - TMA). As lâminas de TMA foram submetidas à técnica de imunoistoquímica com o anticorpo anti-TGF-β, sendo avaliada a intensidade de imunomarcação nas células epiteliais e estromais. Houve imunomarcação de TGF-β no tecido normal e naqueles com lesões proliferativas. Maior imunomarcação de TGF-β foi constatada nas células do tecido prostático normal e com HPB, enquanto as células prostáticas com PIA, PIN e carcinoma exibiram menor imunomarcação dessa citocina, o que sugere a ação do TGF-β na manutenção da homeostase do tecido normal e com lesão proliferativa benigna e na progressão das lesões proliferativas pré-malignas e malignas da próstata canina.


The transforming growth factor-β (TGF-β), a mediator of prostatic growth induces angiogenesis and inhibits cell proliferation. It was used in this study in order to evaluate its expression in normal prostatic tissue and those with benign proliferative lesions, pre-malignant and malignant prostatic diseases. A total of 54 glands with normal histomorphology, epithelial benign prostatic hyperplasia (BPH), stromal BPH, prostatic inflammatory atrophy (PIA), prostatic intraepithelial neoplasia (PIN), and adenocarcinoma were selected and used in the tissue microarray block (TMA). The TMA slides were subjected to the immunohistochemistry with anti-TGF-β and its staining intensity in epithelial and stromal cells was evaluated. There was TGF-β immunostaining by both normal tissues and those with proliferative lesions. Higher TGF-β immunostaining was observed in cells from normal prostatic tissues and with HPB, whereas prostatic cells with PIA, PIN and carcinoma exhibited lower immunostaining of this cytokine, suggesting the action of TGF-β in the maintenance of normal tissue homeostasis and with benign proliferative lesion and in the progression of pre-malignant and malignant proliferative lesions of the canine prostate.


Subject(s)
Male , Animals , Dogs , Carcinoma/diagnosis , Prostatic Diseases/diagnosis , Prostatic Diseases/veterinary , Transforming Growth Factor beta/analysis , Prostatic Intraepithelial Neoplasia/diagnosis , Prostatic Intraepithelial Neoplasia/veterinary , Immunohistochemistry/veterinary
9.
Pesqui. vet. bras ; Pesqui. vet. bras;37(12): 1411-1415, dez. 2017. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-895386

ABSTRACT

In vitro bioassay using Sarcoptes scabiei as a test microorganism is a viable method of study for diverse drugs with acaricidal properties. A great amount of assays proves the diverse and efficient biological activity of extracts and compounds from Brazilian savanna plants. This study had as main object, test and compare the acaricidal activity of four Brazilian Cerrado bioproducts: Stryphnodendron adstringens Mart., Copaifera sp., Lafoensia pacari A. St Hil. and Pterodon emarginatus Vogel, 1837. To perform this test S. scabiei mites were collected from crusts removed on ears of highly infected sows. The mites were selected and separated in Petri dishes with three different concentrations (25, 50 and 75%) of each bioproduct, to evaluate their potential acaricidal activity. The mortality of the mites was counted in each Petri dish every hour, during five hours. The statistical analyses demonstrated differences between the bioproducts tested. The oleoresin of Copaifera sp. and P. emarginatus presented the best results with 100% of mites mortality after treatment. The ethanolic extracts of S. adstringens and L. pacari demonstrated lower acaricidal activity when compared to the oleoresins, with little or no difference among the control groups tested. This bioassay demonstrated to be efficient, reliable, low cost and easy accomplishment. Oil resins from Copaifera sp. and P. emarginatus have in vitro acaricidal activity against adult females of S. scabiei var. suis.(AU)


O uso de Sarcoptes scabiei como microrganismo teste para bioensaio in vitro é um método de estudo viável para diversas drogas acaricidas. Muitos ensaios comprovam a diversidade e eficiência de atividade biocida de extratos e componentes presentes em plantas do cerrado brasileiro. Este trabalho objetivou testar e comparar a atividade acaricida de quatro bioprodutos do cerrado brasileiro: Stryphnodendron adstringens Mart., Lafoensia pacari A. St Hil., Copaifera sp. e Pterodon emarginatus Vogel, 1837. Para este estudo, ácaros S. scabiei foram colhidos em crostas removidas de orelhas de fêmeas suínas altamente infestadas. Os ácaros foram selecionados, separados e colocados em placas de Petri com três diferentes concentrações (25, 50 e 75%) de bioprodutos, para avaliar o potencial de atividade acaricida de cada um. Foi realizada a contagem da mortalidade dos ácaros em cada placa de Petri a cada hora, durante cinco horas. As análises estatísticas demonstraram diferenças entre os bioprodutos testados. As óleo-resinas de Copaifera sp. e P. emarginatus apresentaram os melhores resultados, com 100% de mortalidade dos ácaros após tratamento. Os extratos etanólicos de S. adstringens Mart. e L. pacari demonstraram menor atividade acaricida quando comparados as óleo-resinas, com pequena ou nenhuma diferença entre os resultados dos grupos controle. Este ensaio demonstrou ser uma ferramenta eficiente, confiável, de baixo custo e de fácil realização. As óleo-resinas Copaifera sp. e P. emarginatus possuem atividade acaricida in vitro sobre fêmeas adultas de S. scabiei var. suis.(AU)


Subject(s)
Animals , Sarcoptes scabiei , Stryphnodendron barbatimam/analysis , Acaricides , Fabaceae , Resins, Plant/analysis , Biological Assay , Plant Extracts/therapeutic use
10.
Pesqui. vet. bras ; 37(12): 1411-1415, dez. 2017. tab, graf
Article in English | VETINDEX | ID: vti-743407

ABSTRACT

In vitro bioassay using Sarcoptes scabiei as a test microorganism is a viable method of study for diverse drugs with acaricidal properties. A great amount of assays proves the diverse and efficient biological activity of extracts and compounds from Brazilian savanna plants. This study had as main object, test and compare the acaricidal activity of four Brazilian Cerrado bioproducts: Stryphnodendron adstringens Mart., Copaifera sp., Lafoensia pacari A. St Hil. and Pterodon emarginatus Vogel, 1837. To perform this test S. scabiei mites were collected from crusts removed on ears of highly infected sows. The mites were selected and separated in Petri dishes with three different concentrations (25, 50 and 75%) of each bioproduct, to evaluate their potential acaricidal activity. The mortality of the mites was counted in each Petri dish every hour, during five hours. The statistical analyses demonstrated differences between the bioproducts tested. The oleoresin of Copaifera sp. and P. emarginatus presented the best results with 100% of mites mortality after treatment. The ethanolic extracts of S. adstringens and L. pacari demonstrated lower acaricidal activity when compared to the oleoresins, with little or no difference among the control groups tested. This bioassay demonstrated to be efficient, reliable, low cost and easy accomplishment. Oil resins from Copaifera sp. and P. emarginatus have in vitro acaricidal activity against adult females of S. scabiei var. suis.(AU)


O uso de Sarcoptes scabiei como microrganismo teste para bioensaio in vitro é um método de estudo viável para diversas drogas acaricidas. Muitos ensaios comprovam a diversidade e eficiência de atividade biocida de extratos e componentes presentes em plantas do cerrado brasileiro. Este trabalho objetivou testar e comparar a atividade acaricida de quatro bioprodutos do cerrado brasileiro: Stryphnodendron adstringens Mart., Lafoensia pacari A. St Hil., Copaifera sp. e Pterodon emarginatus Vogel, 1837. Para este estudo, ácaros S. scabiei foram colhidos em crostas removidas de orelhas de fêmeas suínas altamente infestadas. Os ácaros foram selecionados, separados e colocados em placas de Petri com três diferentes concentrações (25, 50 e 75%) de bioprodutos, para avaliar o potencial de atividade acaricida de cada um. Foi realizada a contagem da mortalidade dos ácaros em cada placa de Petri a cada hora, durante cinco horas. As análises estatísticas demonstraram diferenças entre os bioprodutos testados. As óleo-resinas de Copaifera sp. e P. emarginatus apresentaram os melhores resultados, com 100% de mortalidade dos ácaros após tratamento. Os extratos etanólicos de S. adstringens Mart. e L. pacari demonstraram menor atividade acaricida quando comparados as óleo-resinas, com pequena ou nenhuma diferença entre os resultados dos grupos controle. Este ensaio demonstrou ser uma ferramenta eficiente, confiável, de baixo custo e de fácil realização. As óleo-resinas Copaifera sp. e P. emarginatus possuem atividade acaricida in vitro sobre fêmeas adultas de S. scabiei var. suis.(AU)


Subject(s)
Animals , Sarcoptes scabiei , Stryphnodendron barbatimam/analysis , Acaricides , Fabaceae , Resins, Plant/analysis , Biological Assay , Plant Extracts/therapeutic use
11.
Rev. bras. parasitol. vet ; 26(3): 366-371, July-Sept. 2017. tab, graf
Article in English | LILACS | ID: biblio-1042446

ABSTRACT

Abstract Trypanosomiasis caused by Trypanosoma vivax has increased the reports in Brazil in the last decade. An outbreak is herein first reported in the state of Goiás, from May 2016 to January 2017. The outbreak start occurred in the city of Ipameri (Goiás) after the introduction of 18 auctioned cows from the state of Minas Gerais. Direct parasitological test (blood smears) and polymerase chain reactions targeting the catL genes diagnosed T. vivax infection. Fifty six cows from a herd of 161 were infected; 12 died during the outbreak and 44 animals persistently positive (by blood smears) even after chemical treatment were discarded. After this first case, five other cases were detected in state of Goiás. The spread of this disease can be linked to the commercialization of animals carrying T. vivax, allied to the iatrogenic transmission practice, using a single needle and syringe for all cows, during oxytocin administration before each milking.


Resumo Tripanossomíase causada por Trypanosoma vivax tem sido reportada em várias regiões do Brasil na última década. Um surto é aqui reportado no Estado de Goiás, de maio de 2016 a janeiro de 2017. O início do referido surto ocorreu na cidade de Ipameri (Goiás) depois da introdução de 18 vacas Girolando, provenientes do Estado de Minas Gerais. Pelo exame parasitológico direto (esfregaço sanguíneo) e pela reação em cadeia pela polimerase, identificou-se a infecção por T. vivax nos animais. Cinquenta e uma vacas de um rebanho de 161 foram infectadas; 12 morreram durante o surto e 44 animais permaneceram positivos (pelo esfregaço sanguíneo) mesmo recebendo tratamento químico (diminazene), e foram descartadas. Após esse primeiro caso, foram detectados outros cinco casos no Estado de Goiás. A disseminação dessa doença pode estar ligada à comercialização de animais portadores de T. vivax, aliada à prática de transmissão iatrogênica, utilizando-se uma única agulha e seringa para, todas as vacas, durante a administração da oxitocina antes de cada ordenha.


Subject(s)
Animals , Female , Cattle , Trypanosomiasis, Bovine/epidemiology , Cattle Diseases/parasitology , Cattle Diseases/epidemiology , Disease Outbreaks , Trypanosoma vivax , Trypanosomiasis/veterinary , Trypanosomiasis/epidemiology , Brazil/epidemiology , Dairying
12.
Rev Bras Parasitol Vet ; 26(3): 366-371, 2017.
Article in English | MEDLINE | ID: mdl-28678894

ABSTRACT

Trypanosomiasis caused by Trypanosoma vivax has increased the reports in Brazil in the last decade. An outbreak is herein first reported in the state of Goiás, from May 2016 to January 2017. The outbreak start occurred in the city of Ipameri (Goiás) after the introduction of 18 auctioned cows from the state of Minas Gerais. Direct parasitological test (blood smears) and polymerase chain reactions targeting the catL genes diagnosed T. vivax infection. Fifty six cows from a herd of 161 were infected; 12 died during the outbreak and 44 animals persistently positive (by blood smears) even after chemical treatment were discarded. After this first case, five other cases were detected in state of Goiás. The spread of this disease can be linked to the commercialization of animals carrying T. vivax, allied to the iatrogenic transmission practice, using a single needle and syringe for all cows, during oxytocin administration before each milking.


Subject(s)
Cattle Diseases/epidemiology , Cattle Diseases/parasitology , Disease Outbreaks , Trypanosoma vivax , Trypanosomiasis, Bovine/epidemiology , Animals , Brazil/epidemiology , Cattle , Dairying , Female , Trypanosomiasis/epidemiology , Trypanosomiasis/veterinary
13.
R. bras. Parasitol. Vet. ; 26(3): 366-371, 2017. ilus, mapas, tab
Article in English | VETINDEX | ID: vti-25928

ABSTRACT

Trypanosomiasis caused by Trypanosoma vivax has increased the reports in Brazil in the last decade. An outbreak is herein first reported in the state of Goiás, from May 2016 to January 2017. The outbreak start occurred in the city of Ipameri (Goiás) after the introduction of 18 auctioned cows from the state of Minas Gerais. Direct parasitological test (blood smears) and polymerase chain reactions targeting the catL genes diagnosed T. vivax infection. Fifty six cows from a herd of 161 were infected; 12 died during the outbreak and 44 animals persistently positive (by blood smears) even after chemical treatment were discarded. After this first case, five other cases were detected in state of Goiás. The spread of this disease can be linked to the commercialization of animals carrying T. vivax, allied to the iatrogenic transmission practice, using a single needle and syringe for all cows, during oxytocin administration before each milking.(AU)


Tripanossomíase causada por Trypanosoma vivax tem sido reportada em várias regiões do Brasil na última década. Um surto é aqui reportado no Estado de Goiás, de maio de 2016 a janeiro de 2017. O início do referido surto ocorreu na cidade de Ipameri (Goiás) depois da introdução de 18 vacas Girolando, provenientes do Estado de Minas Gerais. Pelo exame parasitológico direto (esfregaço sanguíneo) e pela reação em cadeia pela polimerase, identificou-se a infecção por T. vivax nos animais. Cinquenta e uma vacas de um rebanho de 161 foram infectadas; 12 morreram durante o surto e 44 animais permaneceram positivos (pelo esfregaço sanguíneo) mesmo recebendo tratamento químico (diminazene), e foram descartadas. Após esse primeiro caso, foram detectados outros cinco casos no Estado de Goiás. A disseminação dessa doença pode estar ligada à comercialização de animais portadores de T. vivax, aliada à prática de transmissão iatrogênica, utilizando-se uma única agulha e seringa para, todas as vacas, durante a administração da oxitocina antes de cada ordenha.(AU)


Subject(s)
Animals , Cattle , Trypanosoma vivax/pathogenicity , Disease Outbreaks , Polymerase Chain Reaction/veterinary
14.
Ciênc. anim. bras. (Impr.) ; 17(2): 296-302, Abr-Jun. 2016. tab
Article in Portuguese | VETINDEX | ID: biblio-1473465

ABSTRACT

O Bioma Cerrado possui por volta de 320 mil espécies de animais e ocupa aproximadamente 25% do território brasileiro. Por sua grande diversidade de espécies, excita o tráfico ilegal de animais silvestres. O Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA) apreende animais traficados e encaminha-os para o Centro de Triagem de Animais Silvestres (CETAS), onde passam por triagem, são identificados e submetidos a testes diagnósticos e à quarentena, antes de serem encaminhados a uma destinação final. A identificação de ectoparasitas, possíveis vetores de zoonoses, está entre um dos procedimentos preconizados. Foi realizada, durante o ano de 2013, a colheita e identificação de carrapatos encontrados em animais silvestres encaminhados ao CETAS. As respectivas espécies foram identificadas: Amblyomma longirostre em ouriço-caxeiro (Coendou prehensilis); Amblyomma rotundatum em jiboia (Boa constrictor); Amblyomma sculptum e Rhipicephalus microplus em veado-mateiro (Mazama americana); Amblyomma sculptum em lobo-guará (Chrysocyon brachyurus); Amblyomma sculptum e Amblyomma dubitatum em capivara (Hydrochoerus hydrochaeris); Amblyomma nodosum em tamanduá-mirim (Tamandua tetradactyla); Amblyomma sculptum em bugio (Alouatta guariba). Amblyomma foi o principal gênero encontrado. Este é o gênero mais disperso entre os animais silvestres da América. Animais silvestres frutos de apreensão apresentaram baixo número de carrapatos. Isto pode ter acontecido pela forma como são manejados nos criatórios


Cerrado biome has around 320,000 species of animals and it occupies approximately 25% of the Brazilian territory. This great number of species stimulates the illegal trafficking of wild animals. The Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA) is responsible for rescuing trafficked animals and forwards them to the Centro de Triagem de Animais Silvestres (CETAS), where they are screened, identified, and subjected to diagnostic tests and quarantine before being sent to a final destination. Ectoparasites identification is one of the recommended procedures. During 2013, the tick species were identified in wild animals kept in CETAS: Amblyomma longirostre in porcupine (Coendou prehensilis); Amblyomma rotundatum in common boa (Boa constrictor); Amblyomma sculptum and Riphicephalus microplus in Red brocket deer (Mazama americana); Amblyomma sculptum in maned wolf (Chrysocyon brachyurus); Amblyomma sculptum and Amblyomma dubitatum in capybara (Hydrochoerus hydrochaeris); Amblyomma nodosum in collared anteater (Tamandua tetradactyla); Amblyomma sculptum in brown howler (Alouatta guariba). Amblyomma was the main genre found dispersed among wild animals of South America. Captivity animals showed low number of ticks


Subject(s)
Animals , Animals, Wild/parasitology , Ticks/classification , Ticks/parasitology , Ixodidae/classification , Ectoparasitic Infestations/veterinary
15.
Ci. Anim. bras. ; 17(2): 296-302, Abr-Jun. 2016. tab
Article in Portuguese | VETINDEX | ID: vti-334248

ABSTRACT

O Bioma Cerrado possui por volta de 320 mil espécies de animais e ocupa aproximadamente 25% do território brasileiro. Por sua grande diversidade de espécies, excita o tráfico ilegal de animais silvestres. O Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA) apreende animais traficados e encaminha-os para o Centro de Triagem de Animais Silvestres (CETAS), onde passam por triagem, são identificados e submetidos a testes diagnósticos e à quarentena, antes de serem encaminhados a uma destinação final. A identificação de ectoparasitas, possíveis vetores de zoonoses, está entre um dos procedimentos preconizados. Foi realizada, durante o ano de 2013, a colheita e identificação de carrapatos encontrados em animais silvestres encaminhados ao CETAS. As respectivas espécies foram identificadas: Amblyomma longirostre em ouriço-caxeiro (Coendou prehensilis); Amblyomma rotundatum em jiboia (Boa constrictor); Amblyomma sculptum e Rhipicephalus microplus em veado-mateiro (Mazama americana); Amblyomma sculptum em lobo-guará (Chrysocyon brachyurus); Amblyomma sculptum e Amblyomma dubitatum em capivara (Hydrochoerus hydrochaeris); Amblyomma nodosum em tamanduá-mirim (Tamandua tetradactyla); Amblyomma sculptum em bugio (Alouatta guariba). Amblyomma foi o principal gênero encontrado. Este é o gênero mais disperso entre os animais silvestres da América. Animais silvestres frutos de apreensão apresentaram baixo número de carrapatos. Isto pode ter acontecido pela forma como são manejados nos criatórios(AU)


Cerrado biome has around 320,000 species of animals and it occupies approximately 25% of the Brazilian territory. This great number of species stimulates the illegal trafficking of wild animals. The Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA) is responsible for rescuing trafficked animals and forwards them to the Centro de Triagem de Animais Silvestres (CETAS), where they are screened, identified, and subjected to diagnostic tests and quarantine before being sent to a final destination. Ectoparasites identification is one of the recommended procedures. During 2013, the tick species were identified in wild animals kept in CETAS: Amblyomma longirostre in porcupine (Coendou prehensilis); Amblyomma rotundatum in common boa (Boa constrictor); Amblyomma sculptum and Riphicephalus microplus in Red brocket deer (Mazama americana); Amblyomma sculptum in maned wolf (Chrysocyon brachyurus); Amblyomma sculptum and Amblyomma dubitatum in capybara (Hydrochoerus hydrochaeris); Amblyomma nodosum in collared anteater (Tamandua tetradactyla); Amblyomma sculptum in brown howler (Alouatta guariba). Amblyomma was the main genre found dispersed among wild animals of South America. Captivity animals showed low number of ticks(AU)


Subject(s)
Animals , Ticks/classification , Ticks/parasitology , Animals, Wild/parasitology , Ixodidae/classification , Ectoparasitic Infestations/veterinary
16.
Ci. Anim. bras. ; 17(2)2016.
Article in Portuguese | VETINDEX | ID: vti-745161

ABSTRACT

Abstract Cerrado biome has around 320,000 species of animals and it occupies approximately 25% of the Brazilian territory. This great number of species stimulates the illegal trafficking of wild animals. The Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA) is responsible for rescuing trafficked animals and forwards them to the Centro de Triagem de Animais Silvestres (CETAS), where they are screened, identified, and subjected to diagnostic tests and quarantine before being sent to a final destination. Ectoparasites identification is one of the recommended procedures. During 2013, the tick species were identified in wild animals kept in CETAS: Amblyomma longirostre in porcupine (Coendou prehensilis); Amblyomma rotundatum in common boa (Boa constrictor); Amblyomma sculptum and Riphicephalus microplus in Red brocket deer (Mazama americana); Amblyomma sculptum in maned wolf (Chrysocyon brachyurus); Amblyomma sculptum and Amblyomma dubitatum in capybara (Hydrochoerus hydrochaeris); Amblyomma nodosum in collared anteater (Tamandua tetradactyla); Amblyomma sculptum in brown howler (Alouatta guariba). Amblyomma was the main genre found dispersed among wild animals of South America. Captivity animals showed low number of ticks.


Resumo O Bioma Cerrado possui por volta de 320 mil espécies de animais e ocupa aproximadamente 25% do território brasileiro. Por sua grande diversidade de espécies, excita o tráfico ilegal de animais silvestres. O Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA) apreende animais traficados e encaminha-os para o Centro de Triagem de Animais Silvestres (CETAS), onde passam por triagem, são identificados e submetidos a testes diagnósticos e à quarentena, antes de serem encaminhados a uma destinação final. A identificação de ectoparasitas, possíveis vetores de zoonoses, está entre um dos procedimentos preconizados. Foi realizada, durante o ano de 2013, a colheita e identificação de carrapatos encontrados em animais silvestres encaminhados ao CETAS. As respectivas espécies foram identificadas: Amblyomma longirostre em ouriço-caxeiro (Coendou prehensilis); Amblyomma rotundatum em jiboia (Boa constrictor); Amblyomma sculptum e Rhipicephalus microplus em veado-mateiro (Mazama americana); Amblyomma sculptum em lobo-guará (Chrysocyon brachyurus); Amblyomma sculptum e Amblyomma dubitatum em capivara (Hydrochoerus hydrochaeris); Amblyomma nodosum em tamanduá-mirim (Tamandua tetradactyla); Amblyomma sculptum em bugio (Alouatta guariba). Amblyomma foi o principal gênero encontrado. Este é o gênero mais disperso entre os animais silvestres da América. Animais silvestres frutos de apreensão apresentaram baixo número de carrapatos. Isto pode ter acontecido pela forma como são manejados nos criatórios.

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