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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
30/06/2004 |
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Data da última atualização: |
08/10/2010 |
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Autoria: |
TASENDE, C.; MEIKLE, A.; RODRÍGUEZ-PIÑÓN, M.; FORSBERG, M.; GARÓFALO, E. G. |
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Título: |
Estrogen and progesterone receptor content in the pituitary gland and uterus of progesterone-primed and gonadotropin releasing hormone-treated anestrous ewes. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Theriogenology, v. 57, n. 6, p. 1719-1731, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to investigate the effect of progesterone (P) and gonadotropin-releasing hormone (GnRH) treatment on estrogen receptor (ER) and P receptor (PR) concentrations in the pituitary gland and uterus of anestrous ewes. Ewes were either not treated (group C, n = 4); were treated with 0.33 g P-controlled internal drug release (P-CIDR) for 10 days (group P, n = 4), with GnRH, 6.7 ng i.v. injections every 2 h for 18 h followed by a 4 ug bolus administration of Receptal at 20 h (group GnRH, n = 4), or with a combination of the P and GnRH treatment (group P + GnRH, n = 3). Ewes were humanely killed either at the beginning of the experiment (group C), when the CIDR was removed (group P), or 24 h after the GnRH bolus treatment (groups GnRH and P + GnRH). Progesterone treatment increased serum P concentrations, indicating that the treatment was effective. AlI GnRH treated ewes had similar luteinizing hormone (LH) surges, which lasted 8 h. At slaughter, estradiol (E2) concentrations in the GnRH group were higher than in groups C, P, and P + GnRH. Treatment with GnRH increased more than 10-fold the content of ER and PR in the pituitary gland without altering steroid receptor concentrations in the uterus. When GnRH was combined with P the uterine receptor contents were higher than with P treatment alone. The treatment with P decreased ER and PR content in the uterus, but had no effect on the pituitary gland. The results show that regulation by P and GnRH of ER and PR content in anestrous ewes is tissue-specific. MenosThe objective of this work was to investigate the effect of progesterone (P) and gonadotropin-releasing hormone (GnRH) treatment on estrogen receptor (ER) and P receptor (PR) concentrations in the pituitary gland and uterus of anestrous ewes. Ewes were either not treated (group C, n = 4); were treated with 0.33 g P-controlled internal drug release (P-CIDR) for 10 days (group P, n = 4), with GnRH, 6.7 ng i.v. injections every 2 h for 18 h followed by a 4 ug bolus administration of Receptal at 20 h (group GnRH, n = 4), or with a combination of the P and GnRH treatment (group P + GnRH, n = 3). Ewes were humanely killed either at the beginning of the experiment (group C), when the CIDR was removed (group P), or 24 h after the GnRH bolus treatment (groups GnRH and P + GnRH). Progesterone treatment increased serum P concentrations, indicating that the treatment was effective. AlI GnRH treated ewes had similar luteinizing hormone (LH) surges, which lasted 8 h. At slaughter, estradiol (E2) concentrations in the GnRH group were higher than in groups C, P, and P + GnRH. Treatment with GnRH increased more than 10-fold the content of ER and PR in the pituitary gland without altering steroid receptor concentrations in the uterus. When GnRH was combined with P the uterine receptor contents were higher than with P treatment alone. The treatment with P decreased ER and PR content in the uterus, but had no effect on the pituitary gland. The results show that regulation by P and GnRH of ER an... Mostrar Tudo |
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Palavras-Chave: |
Anestro; Receptor. |
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Thesagro: |
Ciclo Estral; Endocrinologia; Estrógeno; Ovelha; Ovino; Progesterona; Reprodução Animal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02351naa a2200277 a 4500
001 1530608
005 2010-10-08
008 2002 bl uuuu u00u1 u #d
100 1 $aTASENDE, C.
245 $aEstrogen and progesterone receptor content in the pituitary gland and uterus of progesterone-primed and gonadotropin releasing hormone-treated anestrous ewes.
260 $c2002
520 $aThe objective of this work was to investigate the effect of progesterone (P) and gonadotropin-releasing hormone (GnRH) treatment on estrogen receptor (ER) and P receptor (PR) concentrations in the pituitary gland and uterus of anestrous ewes. Ewes were either not treated (group C, n = 4); were treated with 0.33 g P-controlled internal drug release (P-CIDR) for 10 days (group P, n = 4), with GnRH, 6.7 ng i.v. injections every 2 h for 18 h followed by a 4 ug bolus administration of Receptal at 20 h (group GnRH, n = 4), or with a combination of the P and GnRH treatment (group P + GnRH, n = 3). Ewes were humanely killed either at the beginning of the experiment (group C), when the CIDR was removed (group P), or 24 h after the GnRH bolus treatment (groups GnRH and P + GnRH). Progesterone treatment increased serum P concentrations, indicating that the treatment was effective. AlI GnRH treated ewes had similar luteinizing hormone (LH) surges, which lasted 8 h. At slaughter, estradiol (E2) concentrations in the GnRH group were higher than in groups C, P, and P + GnRH. Treatment with GnRH increased more than 10-fold the content of ER and PR in the pituitary gland without altering steroid receptor concentrations in the uterus. When GnRH was combined with P the uterine receptor contents were higher than with P treatment alone. The treatment with P decreased ER and PR content in the uterus, but had no effect on the pituitary gland. The results show that regulation by P and GnRH of ER and PR content in anestrous ewes is tissue-specific.
650 $aCiclo Estral
650 $aEndocrinologia
650 $aEstrógeno
650 $aOvelha
650 $aOvino
650 $aProgesterona
650 $aReprodução Animal
653 $aAnestro
653 $aReceptor
700 1 $aMEIKLE, A.
700 1 $aRODRÍGUEZ-PIÑÓN, M.
700 1 $aFORSBERG, M.
700 1 $aGARÓFALO, E. G.
773 $tTheriogenology$gv. 57, n. 6, p. 1719-1731, 2002.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
26/08/2014 |
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Data da última atualização: |
21/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
FIGUEIREDO, S. G. DE; SILVA-SENA, G. G.; SANTANA, E. N. DE; SANTOS, R. G. DOS; OIANO NETO, J.; OLIVEIRA, C. A. de. |
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Afiliação: |
SUELY GOMES DE FIGUEIREDO, UNVERSIDADE FESRAL DO ESPIRITO SANTO; GERALDA GILLIAN SILVA-SENA, Universidade Federal do Espírito Santo; ENILTON NASCIMENTO DE SANTANA, Instituto Capixaba de Pesquisa; RAQUEL GOUVÊA DOS SANTOS, Centro de Desenvolvimento da Tecnologia Nuclear; JOAO OIANO NETO, CTAA; CRISTIANE ALVES DE OLIVEIRA, Universidade Federal de Viçosa. |
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Título: |
Effect of gamma irradiation on carotenoids and vitamin C contents of Papaya fruit (Carica papaya L.) cv. Golden. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Food Processing and Technology, v. 5, n. 6, 2014. |
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DOI: |
10.4172/2157-7110.1000337 |
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Idioma: |
Inglês |
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Conteúdo: |
The irradiation has been considered an alternative process for decay control extending shelf life of fresh fruits. This study was conducted to investigate the effect of gamma irradiation on functional constituents on papaya fruits cv. Golden. Fruits were harvested into maturation 1 degree (stage) and irradiated with 0.8 kGy (Cobalt 60 source-MSD Nordion irradiator), and then stored at 24 ± 2 ° C. Total carotenoids and vitamin C contents were evaluated in the pulp fruits, in the 5, 7 e 9 th days post-harvest by a reversed-phase and ion exclusion column by a high performance liquid chromatography. Results demonstrated that the irradiation induced alterations in the total carotenoids and vitamin C levels. However, these changes did not affect the adequacy of vitamins A and C (for adult and children) in relation to daily nutritional requirements. In conclusion, the present data provide evidence that the irradiated papaya, did not impair reduce these nutritional characteristics. |
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Palavras-Chave: |
Papaya; Vitamin c. |
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Thesaurus NAL: |
carotenoids; irradiation. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108201/1/effect-of-gamma-irradiation-on-carotenoids-and-vitamin-c-contents-of-papaya-fruit-carica-papaya-l-cv-golden-2157-7110.1000337.pdf
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Marc: |
LEADER 01736naa a2200241 a 4500
001 1993447
005 2023-03-21
008 2014 bl uuuu u00u1 u #d
024 7 $a10.4172/2157-7110.1000337$2DOI
100 1 $aFIGUEIREDO, S. G. DE
245 $aEffect of gamma irradiation on carotenoids and vitamin C contents of Papaya fruit (Carica papaya L.) cv. Golden.$h[electronic resource]
260 $c2014
520 $aThe irradiation has been considered an alternative process for decay control extending shelf life of fresh fruits. This study was conducted to investigate the effect of gamma irradiation on functional constituents on papaya fruits cv. Golden. Fruits were harvested into maturation 1 degree (stage) and irradiated with 0.8 kGy (Cobalt 60 source-MSD Nordion irradiator), and then stored at 24 ± 2 ° C. Total carotenoids and vitamin C contents were evaluated in the pulp fruits, in the 5, 7 e 9 th days post-harvest by a reversed-phase and ion exclusion column by a high performance liquid chromatography. Results demonstrated that the irradiation induced alterations in the total carotenoids and vitamin C levels. However, these changes did not affect the adequacy of vitamins A and C (for adult and children) in relation to daily nutritional requirements. In conclusion, the present data provide evidence that the irradiated papaya, did not impair reduce these nutritional characteristics.
650 $acarotenoids
650 $airradiation
653 $aPapaya
653 $aVitamin c
700 1 $aSILVA-SENA, G. G.
700 1 $aSANTANA, E. N. DE
700 1 $aSANTOS, R. G. DOS
700 1 $aOIANO NETO, J.
700 1 $aOLIVEIRA, C. A. de
773 $tJournal of Food Processing and Technology$gv. 5, n. 6, 2014.
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Embrapa Pecuária Sudeste (CPPSE) |
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