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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
02/10/2023 |
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Autoria: |
SMITH, W. D.; JACKSON, F.; JACKSON, E.; WILLIAMS, J.; MILLER, H. R. P. |
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Título: |
Manifestations of resistance to ovine ortertagiais associated with immunological responses in the gastric lymph. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Journal of Comparative Pathology, v. 94, n. 4, p. 591-601, Oct. 1984. |
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DOI: |
10.1016/0021-9975(84)90063-x |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Groups of previously infected and worm-free sheep were serially killed up to 10 days after challenge with 50 000 Ostertagia circumcincta larvae. Two similar groups of sheep were killed 10 days after challenge with 1000 larvae. The previously infected sheep were resistant to the smaller challenge dose in that fewer, stunted worms were recovered from them than from controls. However, this resistance was not as marked as that observed in the previously infected sheep which received the large challenge, because proportionally fewer worms were recovered after the 50000 dose and the great majority of these were arrested at the early fourth stage. The gastric lymph ducts of 6 previously infected sheep were cannulated successfully and a marked local immune response was detected in 3 sheep which were challenged with 50 000 larvae. No response was detected in 3 cannulated sheep challenged with 1000 larvae. In the lymph of the 50 000 dose group, a temporary increase in pepsinogen activity suggested that a hypersensitivity reaction related to the presence of large numbers of mucosal mast cells began between 24 and 48 h after challenge. This was followed by marked increases in the cellular and IgA content of lymph, which reached peaks on days 3 and 6, respectively. It is suggested that the response detected in the gastric lymph reflected aspects of a local immune reaction in the abomasal mucosa and that this reaction accounted for the enhanced degree of resistance to the larger challenge dose. MenosAbstract: Groups of previously infected and worm-free sheep were serially killed up to 10 days after challenge with 50 000 Ostertagia circumcincta larvae. Two similar groups of sheep were killed 10 days after challenge with 1000 larvae. The previously infected sheep were resistant to the smaller challenge dose in that fewer, stunted worms were recovered from them than from controls. However, this resistance was not as marked as that observed in the previously infected sheep which received the large challenge, because proportionally fewer worms were recovered after the 50000 dose and the great majority of these were arrested at the early fourth stage. The gastric lymph ducts of 6 previously infected sheep were cannulated successfully and a marked local immune response was detected in 3 sheep which were challenged with 50 000 larvae. No response was detected in 3 cannulated sheep challenged with 1000 larvae. In the lymph of the 50 000 dose group, a temporary increase in pepsinogen activity suggested that a hypersensitivity reaction related to the presence of large numbers of mucosal mast cells began between 24 and 48 h after challenge. This was followed by marked increases in the cellular and IgA content of lymph, which reached peaks on days 3 and 6, respectively. It is suggested that the response detected in the gastric lymph reflected aspects of a local immune reaction in the abomasal mucosa and that this reaction accounted for the enhanced degree of resistance to the larger... Mostrar Tudo |
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Palavras-Chave: |
Ostertagiasis; Pepsinogens; Trichostrongyloidiasis. |
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Thesagro: |
Anti-Helmíntico; Ovino; Parasitologia. |
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Thesaurus Nal: |
Antibody formation; Gastric mucosa; Immunoglobulin A; Immunoglobulin G; Immunology; Lymph; Mast cells; Parasitology; Sheep diseases. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02560naa a2200361 a 4500
001 1520852
005 2023-10-02
008 1984 bl uuuu u00u1 u #d
024 7 $a10.1016/0021-9975(84)90063-x$2DOI
100 1 $aSMITH, W. D.
245 $aManifestations of resistance to ovine ortertagiais associated with immunological responses in the gastric lymph.$h[electronic resource]
260 $c1984
520 $aAbstract: Groups of previously infected and worm-free sheep were serially killed up to 10 days after challenge with 50 000 Ostertagia circumcincta larvae. Two similar groups of sheep were killed 10 days after challenge with 1000 larvae. The previously infected sheep were resistant to the smaller challenge dose in that fewer, stunted worms were recovered from them than from controls. However, this resistance was not as marked as that observed in the previously infected sheep which received the large challenge, because proportionally fewer worms were recovered after the 50000 dose and the great majority of these were arrested at the early fourth stage. The gastric lymph ducts of 6 previously infected sheep were cannulated successfully and a marked local immune response was detected in 3 sheep which were challenged with 50 000 larvae. No response was detected in 3 cannulated sheep challenged with 1000 larvae. In the lymph of the 50 000 dose group, a temporary increase in pepsinogen activity suggested that a hypersensitivity reaction related to the presence of large numbers of mucosal mast cells began between 24 and 48 h after challenge. This was followed by marked increases in the cellular and IgA content of lymph, which reached peaks on days 3 and 6, respectively. It is suggested that the response detected in the gastric lymph reflected aspects of a local immune reaction in the abomasal mucosa and that this reaction accounted for the enhanced degree of resistance to the larger challenge dose.
650 $aAntibody formation
650 $aGastric mucosa
650 $aImmunoglobulin A
650 $aImmunoglobulin G
650 $aImmunology
650 $aLymph
650 $aMast cells
650 $aParasitology
650 $aSheep diseases
650 $aAnti-Helmíntico
650 $aOvino
650 $aParasitologia
653 $aOstertagiasis
653 $aPepsinogens
653 $aTrichostrongyloidiasis
700 1 $aJACKSON, F.
700 1 $aJACKSON, E.
700 1 $aWILLIAMS, J.
700 1 $aMILLER, H. R. P.
773 $tJournal of Comparative Pathology$gv. 94, n. 4, p. 591-601, Oct. 1984.
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Embrapa Caprinos e Ovinos (CNPC) |
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