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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
23/03/2005 |
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Data da última atualização: |
23/03/2005 |
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Autoria: |
MAJEWSKI, A. C.; HANSEN, P. J. |
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Título: |
Progesterone allows survival of xenografts transplanted in the sheep uterus. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Theriogenology, v. 53, n. 1, p. 285, 2000. |
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Idioma: |
Inglês |
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Notas: |
Edição de proceedings Annual Conference of the International Embryo Transfer Society, Maastricht, The Netherlands, jan. 2000. |
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Conteúdo: |
Among its many actions to maintain pregnancy, progesterone is believed to down- regulate irnrnune responses in the uterus and prevent maternal immunological destruction of the alIogenic conseptus. Here, we show that progesterone aIlows the survival of a xenotransplant placed in the uterine lumen. The transplant was a mouse hybridoma cell tine that produces an antibody to spinach BiP, a member of the heat shock protein 70 family. This cell tine was chosen because the antibody does not react with sheep peripheral blood cells. Ten ewes were bilaterally ovariectomized and ligatures were placed around each uterine bom. After >30 d, ewes were injected daily for 30 d with either vehicle or 50 mg progesterone. Reproductive tracts were then exposed, one uterine bom was injected with 1 x 107 hybridoma cells suspended in phosphate-buffered saline (PBS), and the other bom received PBS. Hormonal treatments continued for another 14 d. Reproductive tracts were then removed and hybridoma cells were identified via indirect FITC-labeling using a monoclonal antibody to the hybridoma MHC class I haplotype (H2-Kd).
The least-squares mean for number ofhybridoma cells recovered from ewes injected with vehicle was 0.0 for the PBS bom (hybridoma cells were recovered from 0/5 ewes) and 6600 for the hybridoma-injected bom (hybridoma cells were recovered from 1/5 ewes). In comparison. the least-squares man for number of hybridoma cells recovered from ewes injected with progesterone was 443,500 for the PBS bom (hybridoma cells were recovered from 2/5 ewes; in the ewes with hybridoma cells, the ligatures were patent) and 8,746,000 cells from the hybridoma-injected bom (hybridoma cells were recovered from 3/4 ewes; cells were 10st during processing for the 5th ewe and were not examined). Cell number was affected by progesterone treatment (P<0.02) and the progesterone x bom interaction (P<0.05). Using chi-square analysis, progesterone treatment affected the proportion of hybridoma-injected horns with recovered hybridoma cells (P<0.10). Overall, hybridoma cells were recovered from 1/5 vehicle-treated ewes and 4/5 progesterone-treated ewes (by chi-square analysis, P=0.06). These results demonstrate that progesterone can inhibit uterine tissue graft rejection responses sufficiently to aIlow survival of xenograft tissue. This suggests that the immunosuppressive action of progesterone contributes to the survival of the aIlogenic conceptus. The hybridoma model should prove useful in identifying the mechanism by which progesterone reguiates uterine irnrnune function. MenosAmong its many actions to maintain pregnancy, progesterone is believed to down- regulate irnrnune responses in the uterus and prevent maternal immunological destruction of the alIogenic conseptus. Here, we show that progesterone aIlows the survival of a xenotransplant placed in the uterine lumen. The transplant was a mouse hybridoma cell tine that produces an antibody to spinach BiP, a member of the heat shock protein 70 family. This cell tine was chosen because the antibody does not react with sheep peripheral blood cells. Ten ewes were bilaterally ovariectomized and ligatures were placed around each uterine bom. After >30 d, ewes were injected daily for 30 d with either vehicle or 50 mg progesterone. Reproductive tracts were then exposed, one uterine bom was injected with 1 x 107 hybridoma cells suspended in phosphate-buffered saline (PBS), and the other bom received PBS. Hormonal treatments continued for another 14 d. Reproductive tracts were then removed and hybridoma cells were identified via indirect FITC-labeling using a monoclonal antibody to the hybridoma MHC class I haplotype (H2-Kd).
The least-squares mean for number ofhybridoma cells recovered from ewes injected with vehicle was 0.0 for the PBS bom (hybridoma cells were recovered from 0/5 ewes) and 6600 for the hybridoma-injected bom (hybridoma cells were recovered from 1/5 ewes). In comparison. the least-squares man for number of hybridoma cells recovered from ewes injected with progesterone was 443,500 for the... Mostrar Tudo |
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Thesagro: |
Endocrinologia; Ovino; Progesterona; Reprodução Animal; Sobrevivência; Útero. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03273naa a2200217 a 4500
001 1531023
005 2005-03-23
008 2000 bl uuuu u00u1 u #d
100 1 $aMAJEWSKI, A. C.
245 $aProgesterone allows survival of xenografts transplanted in the sheep uterus.
260 $c2000
500 $aEdição de proceedings Annual Conference of the International Embryo Transfer Society, Maastricht, The Netherlands, jan. 2000.
520 $aAmong its many actions to maintain pregnancy, progesterone is believed to down- regulate irnrnune responses in the uterus and prevent maternal immunological destruction of the alIogenic conseptus. Here, we show that progesterone aIlows the survival of a xenotransplant placed in the uterine lumen. The transplant was a mouse hybridoma cell tine that produces an antibody to spinach BiP, a member of the heat shock protein 70 family. This cell tine was chosen because the antibody does not react with sheep peripheral blood cells. Ten ewes were bilaterally ovariectomized and ligatures were placed around each uterine bom. After >30 d, ewes were injected daily for 30 d with either vehicle or 50 mg progesterone. Reproductive tracts were then exposed, one uterine bom was injected with 1 x 107 hybridoma cells suspended in phosphate-buffered saline (PBS), and the other bom received PBS. Hormonal treatments continued for another 14 d. Reproductive tracts were then removed and hybridoma cells were identified via indirect FITC-labeling using a monoclonal antibody to the hybridoma MHC class I haplotype (H2-Kd). The least-squares mean for number ofhybridoma cells recovered from ewes injected with vehicle was 0.0 for the PBS bom (hybridoma cells were recovered from 0/5 ewes) and 6600 for the hybridoma-injected bom (hybridoma cells were recovered from 1/5 ewes). In comparison. the least-squares man for number of hybridoma cells recovered from ewes injected with progesterone was 443,500 for the PBS bom (hybridoma cells were recovered from 2/5 ewes; in the ewes with hybridoma cells, the ligatures were patent) and 8,746,000 cells from the hybridoma-injected bom (hybridoma cells were recovered from 3/4 ewes; cells were 10st during processing for the 5th ewe and were not examined). Cell number was affected by progesterone treatment (P<0.02) and the progesterone x bom interaction (P<0.05). Using chi-square analysis, progesterone treatment affected the proportion of hybridoma-injected horns with recovered hybridoma cells (P<0.10). Overall, hybridoma cells were recovered from 1/5 vehicle-treated ewes and 4/5 progesterone-treated ewes (by chi-square analysis, P=0.06). These results demonstrate that progesterone can inhibit uterine tissue graft rejection responses sufficiently to aIlow survival of xenograft tissue. This suggests that the immunosuppressive action of progesterone contributes to the survival of the aIlogenic conceptus. The hybridoma model should prove useful in identifying the mechanism by which progesterone reguiates uterine irnrnune function.
650 $aEndocrinologia
650 $aOvino
650 $aProgesterona
650 $aReprodução Animal
650 $aSobrevivência
650 $aÚtero
700 1 $aHANSEN, P. J.
773 $tTheriogenology$gv. 53, n. 1, p. 285, 2000.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
15/10/2019 |
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Data da última atualização: |
28/11/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANTOS, L. M.; FERREIRA, P. P. B.; CHAVES, A. R. de M.; BASTOS, D. C.; SILVA, S. de O. e. |
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Afiliação: |
LUCINA MARTINS SANTOS; PEDRO PAULO BEZERRA FERREIRA; AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; DEBORA COSTA BASTOS, CPATSA; SEBASTIÃO DE OLIVEIRA E SILVA. |
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Título: |
Índice de clorofila em laranjeira Sincorá enxertadas em diferentes porta-enxertos cultivadas no Nordeste. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE RECURSOS NATURAIS DO SEMIÁRIDO, 4., 2019, Crato, CE. Seminário e sociedade: sustentabilidade para gerações futuras. Crato: Universidade Federal do Cariri: Universidade Federal do Ceará, 2019. |
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DOI: |
10.18068/IVSBRNS.2019.063 |
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Idioma: |
Português |
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Conteúdo: |
O porta-enxerto pode influenciar as características da laranjeira, interferindo na atividade fotossintética através da síntese de clorofila nas plantas. Diante disso, objetivou-se avaliar o índice de clorofila em laranjeira ?Sincorá? cultivada em diferentes porta-enxertos no Nordeste. O experimento foi conduzido em blocos casualizados com seis repetições, com a cultivar copa laranjeira ?Sincorá? enxertada em limoeiro ?Cravo Santa Cruz?, tangerineira Sunki seleção Tropical, e citrandarins Indio e Riverside. Os índices de clorofila a, b e total foram determinados utilizando o aparelho clorofilômetro, cujas medições foram realizadas em folhas completamente expandidas e sadias de ramos principais de seis plantas por tratamento, entre os meses de janeiro e abril de 2018, no período da manhã. O porta-enxerto Riverside apresentou os maiores índices de clorofila, credenciando-se com grande potencial para o cultivo de laranjeira no Nordeste. |
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Palavras-Chave: |
Índice de clorofila. |
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Thesagro: |
Citricultura; Laranja; Pigmento; Porta Enxerto. |
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Thesaurus NAL: |
Oranges. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/202883/1/INDICE-DE-CLOROFILA-2019.pdf
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Marc: |
LEADER 01871nam a2200241 a 4500
001 2113106
005 2023-11-28
008 2019 bl uuuu u00u1 u #d
024 7 $a10.18068/IVSBRNS.2019.063$2DOI
100 1 $aSANTOS, L. M.
245 $aÍndice de clorofila em laranjeira Sincorá enxertadas em diferentes porta-enxertos cultivadas no Nordeste.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE RECURSOS NATURAIS DO SEMIÁRIDO, 4., 2019, Crato, CE. Seminário e sociedade: sustentabilidade para gerações futuras. Crato: Universidade Federal do Cariri: Universidade Federal do Ceará$c2019
520 $aO porta-enxerto pode influenciar as características da laranjeira, interferindo na atividade fotossintética através da síntese de clorofila nas plantas. Diante disso, objetivou-se avaliar o índice de clorofila em laranjeira ?Sincorá? cultivada em diferentes porta-enxertos no Nordeste. O experimento foi conduzido em blocos casualizados com seis repetições, com a cultivar copa laranjeira ?Sincorá? enxertada em limoeiro ?Cravo Santa Cruz?, tangerineira Sunki seleção Tropical, e citrandarins Indio e Riverside. Os índices de clorofila a, b e total foram determinados utilizando o aparelho clorofilômetro, cujas medições foram realizadas em folhas completamente expandidas e sadias de ramos principais de seis plantas por tratamento, entre os meses de janeiro e abril de 2018, no período da manhã. O porta-enxerto Riverside apresentou os maiores índices de clorofila, credenciando-se com grande potencial para o cultivo de laranjeira no Nordeste.
650 $aOranges
650 $aCitricultura
650 $aLaranja
650 $aPigmento
650 $aPorta Enxerto
653 $aÍndice de clorofila
700 1 $aFERREIRA, P. P. B.
700 1 $aCHAVES, A. R. de M.
700 1 $aBASTOS, D. C.
700 1 $aSILVA, S. de O. e
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Embrapa Semiárido (CPATSA) |
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