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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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Biblioteca |
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| Registros recuperados : 164 | |
| 61. |  | FONSECA, J. F. da; VERGANI, G. B.; CÔRTES, L. R.; RODRIGUES, J. N. D.; SIQUEIRA, L. G. B.; SOUZA-FABJAN, J. M.; OLIVEIRA, M. E. F. Induction of accessory corpus luteum in goats and sheep: from physiological basis to reproductive effects. Revista Brasileira de Reprodução Animal, v. 45, n. 4, p. 309-317, out./dez. 2021. Edição dos anais do XXIV Congresso Brasileiro de Reprodução Animal e VIII International Symposium on Animal Biology of Reproduction, Belo Horizonte, 2021.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
|    |
| 62. | | FONSECA, J. F. da; VERGANI, G. B.; CÔRTES, L. R.; RODRIGUES, J. N. D.; SIQUEIRA, L. G. B.; SOUZA-FABJAN, J. M.; OLIVEIRA, M. E. F. Induction of accessory corpus luteum in goats and sheep: From physiological basis to reproductive effects. Revista Brasileira de Reprodução Animal, v. 45, n. 4, p. 309-317, out./dez. 2021. Anais do XXIV Congresso Brasileiro de Reprodução Animal (CBRA-2021) e VIII International Symposium on Animal Biology of Reproduction - Joint Meeting, Belo Horizonte, MG, 19 a 22 de outubro de 2021.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 63. | | ARASHIRO, E. K. N.; VIEIRA, D. S.; PFEIFER, L. F. M.; SIQUEIRA, L. G. B.; CAMARGO, L. S. de A.; FERNANDES, C. A. C.; VIANA, J. H. M. Induction of ovulation with estradiol benzoate affects the progression of vascularization in preoculatory follicles. n: ANNUAL CONFERENCE OF THE INTERNATIONAL EMBRYO TRANSFER SOCIETY, 2013, Hannover. Proceedings... Hannover: [s.n.], 2013.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 64. | | CHEN, Z.; HAGEN, D. E.; WANG, J.; ELSIK, C. G.; JI, T.; SIQUEIRA, L. G. B.; HANSEN, P. J.; RIVERA, R. M. Global assessment of imprinted gene expression in the bovine conceptus by next generation sequencing. Epigenetics, v. 11, n. 7, p. 501-516, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 65. | | CAMARGO, L. S. de A.; GONÇALVES, F. S.; QUINTAO, C. C. R.; IGUMA, L. T.; SOUZA, E. D.; SIQUEIRA, L. G. B.; VIANA, J. H. M. Genetic modification of bovine embryos by lentiviral vectors. Animal Reproduction, v.10, n.3, p. 359, Jul./Sept. 2013.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 66. | | SIQUEIRA, L. G. B.; SEQUETO, R.; ANUNCIAÇÃO, R.; CAMARGO, L. S. de A.; FERNANDES, C.; FONSECA, J. F. da; PFEIFER, L. F. M.; VIANA, J. H. M. Hormonal profile during resynchronisation using oestradiol benzoate and progesterone-based protocols associated or not with flunixin meglumine in cattle. Reproduction, Fertility, and Development, v. 35, n. 1/2, p. 218-219, 2023. Edição dos Proceedings of the 49th Annual Conference of the International Embryo Technology, Lima, Peru, 2023.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos; Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia. |
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| 67. | | MAIA, A. L. R. S.; BRANDÃO, F. Z.; SOUZA-FABJAN, J. M. G.; ARAÚJO, M. C. C.; SIQUEIRA, L. G. B.; FACO, O.; FONSECA, J. F. da. Hydrosalpinx in dairy goats: occurrence, ultrasound diagnosis, macro- and microscopic characterization. Small Ruminant Research, v. 160, p. 5-11, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
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| 69. | | SCHWARZ, D. G. G.; OLIVEIRA, T. S. A. M. de; MALAQUIAS, J. V.; BRAVO, R. P. B.; SIQUEIRA, L. G. B.; MARTINS, C. F. Influência da idade e condição corporal no comportamento em pastejo de ovinos Santa Inês no Bioma Cerrado. In: ENCONTRO DE JOVENS TALENTOS DA EMBRAPA CERRADOS, 4., 2009, Planaltina, DF. Resumos apresentados... Planaltina, DF: Embrapa Cerrados, 2009. p. 169-170 (Embrapa Cerrados. Documentos, 243).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
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| 71. | | WOHLRES-VIANA, S.; ARASHIRO, E. K. N; MACHADO, M. A.; CAMARGO, L. S. de A.; SIQUEIRA, L. G. B.; PALHÃO, M. P.; VIANA, J. H. M. Intrafollicular oestradiol production, expression of the LH receptor (LHR) gene and its isoforms, and early follicular deviation in Bos indicus. Reproduction Fertility and Development, v. 29, n. 10, p. 1958-1970, 2017. Publicado online em 19 nov. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 72. | | 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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| 74. | | SIQUEIRA, L. G. B.; VIANA, J. H. M.; DINIZ, E. S.; CAMARGO, L. S. A.; OLIVEIRA, A. P.; FERNANDES, C. A. C.; TORRES, C. A. A. Luteal tissue area in embryo recipients synchronized and with spontaneous or estradiol benzoate induced ovulation. Acta Scientiae Veterinariae, v. 34, s494, 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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| 75. | | SIQUEIRA, L. G. B.; VIANA, J. H. M.; SOUZA, E. D.; ARASHIRO, E. K. N.; CAMARGO, L. S. A.; FONSECA, J. F. da; FERNANDES, C. A. C. Eficiência na indução da luteólise em diferentes dias após a coleta de embriões em bovinos (resultados parciais). Acta Scientiae Veterinariae, v. 35, p. s1230, 2007. Supl. 3. Edição dos anais da 21ª Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Salvador, 2007.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
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| 76. | | GRÁZIA, J. G. V.; GOIS, A. C. N.; PELLEGRINO, A. P.; MARQUES-JÚNIOR, A. P.; SIQUEIRA, L. G. B.; VIANA, J. H. M. Effect of in vitro maturation (IVM) method and gas tension during culture upon in vitro production of F1 embryos (Nelore x Angus) using Y-sorted semen. Animal Reproduction, v. 15, n. 3, p. 401, 2018. Edição dos proceedings do 32º Annual Meeting of the Brazilian Embryo Technology Society, Florianópolis, 2018.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 77. | | VIANA, J. H. M.; VARGAS, M. S. B.; SIQUEIRA, L. G. B.; CAMARGO, L. S. de A.; FIGUEIREDO, A. C. S.; FERNANDES, C. A. C.; PALHÃO, M. P. Efficacy of induction of luteolysis in superovulated cows is dependent on time of prostaglandin F2alpha analog treatment: effects on plasma progesterone and luteinizing hormone profiles. Theriogenology, v. 86, n. 4, p. 934-939, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 79. | | CAMARGO, L. S. de A.; QUINTAO, C. C. R.; DENICOL, A. C.; IGUMA, L. T.; CARVALHO, B. C. de; SIQUEIRA, L. G. B.; VIANA, J. H. M. Efeito da tricostatina A na produção de embriões bovinos por transferência nuclear com células somáticas e subsequente gestações. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, 25., 2011, Cumbuco. Resumos... p. 436| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 80. | | 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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| Registros recuperados : 164 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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