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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
22/02/2010 |
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Data da última atualização: |
11/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SIQUEIRA, L. G. B.; TORRES, C. A. A.; AMORIM, L. S.; SOUZA, E. D.; CAMARGO, L. S. de A.; FERNANDES, C. A. C.; VIANA, J. H. M. |
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Afiliação: |
LUIZ GUSTAVO B. SIQUEIRA, UFV; CIRO A. A. TORRES, UFV; LINCOLN S. AMORIM, UFV; ELIZA D. SOUZA; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; CARLOS A. C. FERNANDES, Universidade de Alfenas; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
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Título: |
Interrelationships among morphology, echotexture, and function of the bovine corpus luteum during the estrous cycle. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 115, n. 1/4, p. 18-28, 2009. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2008.11.009 |
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Idioma: |
Inglês |
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Conteúdo: |
It has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly correlated to plasma progesterone concentrations (r=0.86; P<0.001). When luteolysis was induced in Experiment 2, loss of CL function (decrease in plasma progesterone concentrations to metestrous values) preceded tissue regression by 48 h (24h compared with 72 h; P<0.001). The mean pixel value of ultrasound images did not change in Experiment 1 (P>0.70), but a day effect on this attribute was observed in Experiment 2 (P=0.052). In contrast, mean pixel value was correlated to plasma progesterone concentrations in Experiment 1 (r=-0.63; P<0.05), but not in Experiment 2 (r=-0.28; P>0.10). In regard to CL heterogeneity, defined as the standard deviation of the mean pixel value of the luteal tissue, a time effect was observed following both natural (Experiment 1; P<0.009) and luteolysis-induced (Experiment 2; P<0.05) estrous cycles (P<0.05). Moreover, this variable was correlated with plasma progesterone concentrations (r=-0.71 and -0.58 in Experiments 1 and 2, respectively; P<0.01), indicating that CL images were more heterogeneous during metestrus and after luteolysis (functional regression). In summary, morphological and echotextural attributes were correlated with CL function and underwent similar changes during the estrous cycle. Luteal tissue heterogeneity, assessed by ultrasonography, is considered a potential indicator of CL functional status, because it is correlated to circulating progesterone concentrations. MenosIt has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly correlated to plasma progesterone concentrations (r=0.86; P<0.001). When luteolysis was induced in Experiment 2, loss of CL function (decrease in plasma progesterone concentrations to metestrous values) preceded tissue regression by 48 h (24h compared wi... Mostrar Tudo |
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Palavras-Chave: |
Cattle-ultrasonography; Echotexture; Heterogeneity; Pixel. |
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Thesaurus Nal: |
animal reproduction; corpus luteum. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03582naa a2200277 a 4500
001 1658399
005 2022-08-11
008 2009 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2008.11.009$2DOI
100 1 $aSIQUEIRA, L. G. B.
245 $aInterrelationships among morphology, echotexture, and function of the bovine corpus luteum during the estrous cycle.$h[electronic resource]
260 $c2009
520 $aIt has been suggested that ultrasound image attributes are a potential indicator of physiological and functional status of the corpus luteum (CL) in several species, including cattle. The aims of this study were to evaluate CL morphological, functional and echotextural characteristics, and also to investigate the hypothesis that those attributes are correlated and change similarly throughout an estrous cycle. Ovaries of crossbred (Bos taurus taurus x Bos taurus indicus) heifers were evaluated using ultrasonography daily throughout an interestrus interval using a B-mode, real-time ultrasound machine equipped with a 5 MHz linear-array rectal transducer, during a natural estrous cycle (Experiment 1; n=12) or during a shortened cycle, with luteolysis induction 10d after estrus (Experiment 2; n=6). Blood samples were collected for assay of plasma progesterone concentrations. Corpora lutea areas were measured and daily images of each CL were videotaped and digitized for computer-assisted analysis using custom-developed software. In Experiment 1, area of luteal tissue increased until a maximum value 10d after estrus (P<0.001), followed by a plateau phase, and then a decline beginning 14 d after estrus. Luteal tissue area was highly correlated to plasma progesterone concentrations (r=0.86; P<0.001). When luteolysis was induced in Experiment 2, loss of CL function (decrease in plasma progesterone concentrations to metestrous values) preceded tissue regression by 48 h (24h compared with 72 h; P<0.001). The mean pixel value of ultrasound images did not change in Experiment 1 (P>0.70), but a day effect on this attribute was observed in Experiment 2 (P=0.052). In contrast, mean pixel value was correlated to plasma progesterone concentrations in Experiment 1 (r=-0.63; P<0.05), but not in Experiment 2 (r=-0.28; P>0.10). In regard to CL heterogeneity, defined as the standard deviation of the mean pixel value of the luteal tissue, a time effect was observed following both natural (Experiment 1; P<0.009) and luteolysis-induced (Experiment 2; P<0.05) estrous cycles (P<0.05). Moreover, this variable was correlated with plasma progesterone concentrations (r=-0.71 and -0.58 in Experiments 1 and 2, respectively; P<0.01), indicating that CL images were more heterogeneous during metestrus and after luteolysis (functional regression). In summary, morphological and echotextural attributes were correlated with CL function and underwent similar changes during the estrous cycle. Luteal tissue heterogeneity, assessed by ultrasonography, is considered a potential indicator of CL functional status, because it is correlated to circulating progesterone concentrations.
650 $aanimal reproduction
650 $acorpus luteum
653 $aCattle-ultrasonography
653 $aEchotexture
653 $aHeterogeneity
653 $aPixel
700 1 $aTORRES, C. A. A.
700 1 $aAMORIM, L. S.
700 1 $aSOUZA, E. D.
700 1 $aCAMARGO, L. S. de A.
700 1 $aFERNANDES, C. A. C.
700 1 $aVIANA, J. H. M.
773 $tAnimal Reproduction Science$gv. 115, n. 1/4, p. 18-28, 2009.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 32 | |
| 1. |  | AMORIM, L. S.; LUCENA, C.; . OLIVEIRA, M. I. P. de; BELTRÃO, N. E. de M. O mercado de carbono e natureza jurídica. In: CONGRESSO BRASILEIRO DE PLANTAS OLEAGINOSAS, ÓLEOS, GORDURAS E BIODIESEL, 5.; CLÍNICA TECNOLÓGICA EM BIODIESEL, 2., 2008, Lavras. Biodiesel: tecnologia limpa. Anais... Lavras: UFLA, 2008. 5 p. Seção Trabalhos. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Algodão. |
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| 4. | | FONSECA, J. F.; BRUSCHI, J. H.; ZAMBRINI, F. N.; VIANA, J. H. M.; AMORIM, L. S.; CAMARGO, L. S. A. Superovulação de cabras utilizando a primeira onda folicular do ciclo estral. Acta Scientiae Veterinariae, Porto Alegre, v. 34, supl. 1, p. s509, 2006. Edição dos resumos da 20. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, MG, agosto 2006.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 5. | | FONSECA, J. F.; BRUSCHI, J. H.; ZAMBRINI, F. N.; VIANA, J. H. M.; AMORIM, L. S.; CAMARGO, L. S. A. Superovulation in does based on first follicular wave of the estrous cycle. Acta Scientiae Veterinariae, v. 34, s508, 2006. Supl. 1. Edição dos resumos da 20ª Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, 2006.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 6. | | ZAMBRINI, F. N.; COSTA, E. P.; BRUSCHI, J. H.; SOUZA, J. M. G.; AMORIM, L. S.; FONSECA, J. F. da. Effects of hormonal administration in two different shifts and ovulatory dynamics in nonbreeding season on Toggenburg goats. Reproduction, Fertility and Development, v. 22, n. 1, p. 381, 2010. Edição dos Proceedings of the Annual Conference of the International Embryo Transfer Society, Córdoba, Argentina, 9?12 January 2010.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 7. | | ZAMBRINI, F. N.; COSTA, E. P.; BRUSCHI, J. H.; SOUZA, J. M. G.; AMORIM, L. S.; FONSECA, J. F. da. Effects of hormonal administration in two different in two different shifts and ovulatory dynamics in nonbreeding season on toggenburg goats. Reproduction, Fertility and Development, v. 22, n. 1, 2010. Edição dos proceedings do Annual Conference of the International Embryo, 2010, Cordoba.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | AMORIM. L. S.; FONSECA, J. F. da; SIQUEIRA, L. G. B.; VIANA, J. H. M.; ZAMBRINI, F. N.; SEIDEL, G. E.; TORRES, C. A. A. Association of dietary urea with plasma and follicular fluid concentration of hormones and metabolites in goats. In: ANNUAL MEETING OF THE EUROPEAN SOCIETY FOR PAEDIATRIC GASTROENTEROLOGY, HEPATOLOGY AND NUTRITION, 43., 2010, Istanbul. Abstracts... Ankara: Hacettepe University, 2010.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 9. | | FONSECA, J. F.; TORRES, C. A. A.; MAFFILI, V. V.; RODRIGUES, M. T.; SANTOS, A. D. F.; AMORIM, L. S.; MORAES, E. A.; CAMPOS, A. M. Aspectos endócrinos e comportamentais de cabras Alpinas com estro induzido. Acta Scientiae Veterinariae, Porto Alegre, v. 31, p. 374, 2003. Suplemento. Edição de anais da 17a. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Beberibe, CE, ago. 2003.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 10. | | FONSECA, J. F. da; TORRES, C. A. C.; SANTOS, A. D. F.; MAFFILI, V. V.; AMORIM, L. S.; MORAES, E. A. Progesterone and behavioral features when estrous is induced in Alpine goats. Animal Reproduction Science, v. 103, n. 3/4, p. 366-373, Jan., 2008.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 11. | | AMORIM, E. A. M.; AMORIM, L. S.; TORRES, C. A. A.; GUIMARÃES, J. D.; FONSECA, J. F. da; SEIDEL JÚNIOR, G. E. Follicular fluid concentration and oocyte quality from Toggenburg goats fed with urea. Reproduction, Fertility and Development, v. 21, n. 1, p. 184, 2009. Edição dos proceedings da Annual Conference or the International Embryo Transfer Society, San Diego, California, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 13. | | SIQUEIRA, L. G. B.; TORRES, C. A. A.; AMORIM, L. S.; SOUZA, E. D.; CAMARGO, L. S. de A.; FERNANDES, C. A. C.; VIANA, J. H. M. Interrelationships among morphology, echotexture, and function of the bovine corpus luteum during the estrous cycle. Animal Reproduction Science, v. 115, n. 1/4, p. 18-28, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 14. | | AMORIM, L. S.; TORRES, C. A. A.; AMORIM, E. A. M.; GUIMARÃES, J. D.; FONSECA, J. F. da; SIQUEIRA, L. G. B.; SEIDEL, G. E. Effect of dietary urea on embryonic viability and development of Toggenburg goats. Reproduction, Fertility and Development, v.21, n. 1, p. 151, 2009. Edição dos proceedings da Annual Conference or the International Embryo Transfer Society, San Diego, California, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | PATROCÍNIOS. T. A.; FERNANDES, C. A. C.; AMORIM, L. S.; RIBEIRO. J. R.; MACEDO, G. C.; SILVA, A. D.; VIANA, J. H. M.; CAMARGO, L. S. de A. Effect of reservatrol analogue on development of in vitro-fertilized bovine embryos. Reproduction, Fertility and Development, v. 29, n. 1, p. 183, 2017. Edição dos proceedings da Annual Conference of the International Embryo Technology Society, Austin, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 16. | | CAVALCANTI, A. S.; BRANDÃO, F. Z.; SILVA, A. L. S.; PINTO, T. G.; AMORIM, L. S.; FONSECA, J. F. da; NOGUEIRA, L. A. G. Uso do GnRH associado a protocolos de curta duração com esponjas de progestágenos para sincronização do estro em ovelhas. Acta Scientiae Veterinariae, Porto Alegre, v. 35, p. s1285, 2007. Suplemento 3. Edição dos anais da 21o. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões - SBTE, Salvador, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 17. | | SIQUEIRA, L. G. B.; VIANA, J. H. M.; DINIZ, E. S.; CAMARGO, L. S. A.; AMORIM, L. S.; FONSECA, J. F.; FERNANDES, C. A. C.; TORRES, C. A. A. Aferição de ecogenicidade luteal com o uso de diferentes transdutores de ultra-som. Acta Scientiae Veterinariae, v. 34, supl. 1, p. s281, 2006. Edição dos resumos da 20. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, MG, agosto 2006.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 18. | | SIQUEIRA, L. G. B.; VIANA, J. H. M.; TORRES, C. A. A.; SOUZA, E. D.; AMORIM, L. S.; OLIVEIRA, J. L.; CAMARGO, L. S. A.; Jr, P. L. J. M. Corpora lutea morphological and echotextural attributes related to plasma progesterona concentration in heifers. In: REPRODUCTION, FERTILITY AND DEVELOPMENT. 20. 2008, Anais. Colorado. Csiro, Academy of Science, 2008. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 19. | | SIQUEIRA, L. G. B.; VIANA, J. H. M.; TORRES, C. A. A.; SOUZA, E. D.; AMORIM, L. S.; FONSECA, J. F. da; CAMARGO, L. S. A.; MONTEIRO JÚNIOR, P. L. J. Corpora lutea morphological and echotextural attributes related to plasma progesterone concentration in heifers. Reproduction, Fertility and Development, v. 20, n. 1, p. 237-238, 2008. Edição dos proceedings da Annual Conference or the International Embryo Transfer Society, Denver, Colorado, 2008.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 20. | | AMORIM, L. S.; TORRES, C. A. A.; AMORIM, E. A. M.; GUIMARÃES, J. D.; SILVA FILHO, J. M.; FONSECA, J. F. da; VIANA, J. H. M.; SIQUEIRA, L. G. B. Características físicas e morfológicas do sêmen de touros da raça nelore confinados e tratados com somatotrofina bovina recombinante (r-bST). Acta Scientiae Veterinariae, Porto Alegre, v. 34, supl. 1, p. s377, 2006. Edição dos resumos da 20. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Araxá, MG, agosto 2006.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 32 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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