Bracken Fern
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. SPONTANEOUS AND EXPERIMENTAL ACUTE POISONING BY BRACKEN FERN (Pteridium aquilinum) IN CATTLE / INTOXICAÇÃO AGUDA ESPONTÂNEA E EXPERIMENTAL POR SAMAMBAIA (Pteridium aquilinum) EM BOVINOS
Foram estudados a epidemiologia, a patogênese, os aspectos clínicos e patológicos da intoxicação aguda, espontânea e experimental, por samambaia (Pteridium aquilinum) em bovinos. Dois trabalhos científicos que resultaram desse estudo são aqui apresentados e discutidos. Inicialmente, foram revisados 6.256 laudos de necropsia de bovinos num período de
Publicado em: 2009
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2. MORPHOLOGY AND IMMUNOHISTOCHEMISTRY OF ALIMENTARY SQUAMOUS CELL CARCINOMA ASSOCIATED WITH Pteridium aquilinum IN CATTLE / MORFOLOGIA E IMUNOISTOQUÍMICA DOS CARCINOMAS DE CÉLULAS ESCAMOSAS ALIMENTARES ASSOCIADOS AO CONSUMO DE Pteridium aquilinum EM BOVINOS
To determine the main factors influencing the biological behavior of 40 squamous cell carcinomas (SCC) of the upper digestive tract (UDT) of cattle associated with spontaneous ingestion of bracken fern (Pteridium aquilinum), morphological, including cell proliferation, and immunohistochemical aspects were studied. The aspects analyzed included anatomical loc
Publicado em: 2007
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3. Bovine papillomavirus type 2 detection in the urinary bladder of cattle with chronic enzootic haematuria
The bovine papillomavirus type 2 (BPV-2) involvement in the aetiology of chronic enzootic haematuria associated to bracken fern ingestion has been suggested for a long time. However, a few reports have shown the presence of the BPV-2 in urinary bladder tumors of cattle. The aim of this study was to investigate the presence of the BPV-2 infection in the urina
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-09
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4. Evaluation of the immunotoxic effects of Pteridium aquilinum. Study in mice / Avaliação dos efeitos imunotóxicos da Pteridium aquilinum. Estudo em camundongos
Pteridium aquilinum, known popularly as "bracken fern" is considered one of the more important toxic plants in the world, not only for its cosmopolite distribution and poisoning of flocks in diverse parts of the world, but also for its high potential carcinogenicity observed in animals and human that feed with this plant. On the other hand, there are not dat
Publicado em: 2006
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5. Apoptose induzida por extrato aquoso de Pteridium aquilinum em células de glândula submandibular humana (HSG) e de epitélio bucal (OSCC-3)
The bracken Pteridium aquilinum is considered one of the most important toxic plants, not only for its extensive geographic distribution, but also for provoking, in different animal species that use it as food, severe poisoning and the development of tumors in the digestory and urinary tracts. Moreover, epidemiologic studies have related the high incidence o
Publicado em: 2006
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6. Alterações anátomo-histopatológicas em ratos submetidos à dieta com extrato de broto de samambaia (Pteridium aquilinum var. arachnoideum) de dois municípios do estado do Paraná
The carcinogenicity of bracken fern harvest from two regions of Paraná State to induce hematury in rats was studied. In order to do that, 33 Wistar rats were divided in three groups. Groups I and II received an aqueous extract of bracken fern from Londrina-PR or Ibaiti-PR, respectively, in drinking water for 60 days. Group III, control group, received regul
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2005-06
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7. NEOPLASIAS DO TRATO ALIMENTAR SUPERIOR EM BOVINOS ASSOCIADAS AO CONSUMO ESPONTÂNEO DE SAMAMBAIA (Pteridium aquilinum) / NEOPLASMS OF THE UPPER DIGESTIVE TRACT OF CATTLE ASSOCIATED TO SPONTANEOUS INTAKE OF BRACKEN FERN (Pteridium aquilinum)
Foram estudados 30 bovinos com neoplasias no trato alimentar superior (TAS) associadas ao consumo espontâneo de samambaia (Pteridium aquilinum) provenientes de 27 propriedades rurais, sendo 23 no município de Jaguari e quatro em Nova Esperança de Sul, Rio Grande do Sul. A população bovina total das 27 propriedades em que ocorreram os casos era de 1.090
Publicado em: 2005
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8. Interaction between Antheridogens and Fatty Acids in Fern Spore Germination 1
Certain fatty acids in the C5 to C18 range, at concentrations as low as 10−5 M, were found to inhibit the germinations of spores of the sensitive fern, Onoclea sensibilis L. The addition of gametophytic culture flltrates of the bracken fern, Pteridium aquilinum (L.) Kuhn, containing antheridogen A, was found to overcome this inhibition and allow the spores
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9. The presence of bovine papillomavirus type 4 DNA is not required for the progression to, or the maintenance of, the malignant state in cancers of the alimentary canal in cattle.
In the Western Highlands of Scotland there is a very high incidence of alimentary cancers in cattle. The carcinomas of the upper alimentary canal are found in association with virus-induced benign papillomas, and transformation of papillomas to carcinomas has been observed. Strong circumstantial evidence suggests that the progression to malignancy is due to