Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon
Given the ilnportance of the hormones prolactin and alpha-melanotrophin in the regulation ofthe mamnial ian reproductive cycle, it was decided to assess their serum levels during the reproductive cycle ofCoiumba ¡ip/a (domestic pigeon).Fernale pigeons were utilized ¡ti the stages of egg-laying, incu...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología
1994
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/med/article/view/40933 |
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I10-R327-article-409332024-03-27T19:15:13Z Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon Castagnino, Rosa Vivas, Adriana Nicora, Olga Ibañez, Nora prolactin alpha-melanotrophin reproductive cycle ovarian structure columbia livia prolactina alfa- nielanotrofina ciclo reproductor estructura ovárica Columba livia Given the ilnportance of the hormones prolactin and alpha-melanotrophin in the regulation ofthe mamnial ian reproductive cycle, it was decided to assess their serum levels during the reproductive cycle ofCoiumba ¡ip/a (domestic pigeon).Fernale pigeons were utilized ¡ti the stages of egg-laying, incubation and rearing.Simultaneous!y, the structural changes of the ovary in the aforeinentioned periods were studied. The levels of prolactin and alpha- nielanotrophin showed similar behaviour. TI-telow concentrations found in the period of egg- laying (x + s = 4.3 ± 0.6 ; 3.5 ± 0.26 ng/mI) increased significantly during incubation (x ± s =6.5 -±0.7 ng/ml ;6.6± 1.7 ng/mI) to reach the maxiniun value in therearingperiod(x± s= 10.33 ± 1.8 ng/ml ; 13.6± 1.9 ng/mI). Accompanying these changes a marked predoniinancc of theniedullary zone over the cortex and lack of developing follicles were found in the rearing state. Dada la importancia de prolactina y alfanuelanotrofina en la regulación del ciclo reproductivo de mamíferos, se decidió investigar sus perfiles de secreción en el ciclo reproductivo de Columbic livia (paloma doméstica), y su comparación con las variaciones morfológicas del ovario. Se utilizaron palomas henibras en diferentes estadjos de su ciclo reproductivo: postura- incubación - cría. Las muestras ováricas se procesaron por las técnicas histológicas convencionales, mientras que los dosajes hormonales se realizaron mediante ensayo biológico para alfa-melanotrofina y radioinnuunoensayo para prolactina.Se obtuvieron diferencias significativas en los distintos períodos tanto en lo que respecta a la estructura ovárica como a los valores hormonales de prolactina y alfa-melanotrofina.Ambas muestran un comportamiento similar en los respectivos estadios del ciclo reproductor. Las concentraciones más bajas se encontraron en el periodo de Postura (x ±s = 4,3 ± 0,6; 3,5 ± 0,26 ng/mI), aumentando significativamente en el de Incubación (x ± s = 6,5 ± 0,7 ng/mI; 6.6 ± 1,7 ng/ni!) y alcanzando los máximos valores en eldeCria(x±s= 10,33+1,8 ng/mI; 13,6+1,9 na/ mI). Concom i tantemente, se observaron variaciones morfológicas en ovario con marcado desarrollo del estroma medular. Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología 1994-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion texto texto texto application/pdf https://revistas.unc.edu.ar/index.php/med/article/view/40933 10.31053/1853.0605.v52.n2.40933 Revista de la Facultad de Ciencias Médicas de Córdoba.; Vol. 52 No. 2 (1994); 5-10 Revista de la Facultad de Ciencias Médicas de Córdoba; Vol. 52 Núm. 2 (1994); 5-10 Revista da Faculdade de Ciências Médicas de Córdoba; v. 52 n. 2 (1994); 5-10 1853-0605 0014-6722 spa https://revistas.unc.edu.ar/index.php/med/article/view/40933/43480 Derechos de autor 2023 Universidad Nacional de Córdoba http://creativecommons.org/licenses/by-nc/4.0 |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-327 |
| container_title_str |
Revista de la Facultad de Ciencias Médicas de Córdoba |
| language |
Español |
| format |
Artículo revista |
| topic |
prolactin alpha-melanotrophin reproductive cycle ovarian structure columbia livia prolactina alfa- nielanotrofina ciclo reproductor estructura ovárica Columba livia |
| spellingShingle |
prolactin alpha-melanotrophin reproductive cycle ovarian structure columbia livia prolactina alfa- nielanotrofina ciclo reproductor estructura ovárica Columba livia Castagnino, Rosa Vivas, Adriana Nicora, Olga Ibañez, Nora Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon |
| topic_facet |
prolactin alpha-melanotrophin reproductive cycle ovarian structure columbia livia prolactina alfa- nielanotrofina ciclo reproductor estructura ovárica Columba livia |
| author |
Castagnino, Rosa Vivas, Adriana Nicora, Olga Ibañez, Nora |
| author_facet |
Castagnino, Rosa Vivas, Adriana Nicora, Olga Ibañez, Nora |
| author_sort |
Castagnino, Rosa |
| title |
Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon |
| title_short |
Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon |
| title_full |
Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon |
| title_fullStr |
Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon |
| title_full_unstemmed |
Serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of Columba livia domestic pigeon |
| title_sort |
serum levels of prolacin and alpha- melanotrophin and structure of the ovary during the reproductive cycle of columba livia domestic pigeon |
| description |
Given the ilnportance of the hormones prolactin and alpha-melanotrophin in the regulation ofthe mamnial ian reproductive cycle, it was decided to assess their serum levels during the reproductive cycle ofCoiumba ¡ip/a (domestic pigeon).Fernale pigeons were utilized ¡ti the stages of egg-laying, incubation and rearing.Simultaneous!y, the structural changes of the ovary in the aforeinentioned periods were studied. The levels of prolactin and alpha- nielanotrophin showed similar behaviour. TI-telow concentrations found in the period of egg- laying (x + s = 4.3 ± 0.6 ; 3.5 ± 0.26 ng/mI) increased significantly during incubation (x ± s =6.5 -±0.7 ng/ml ;6.6± 1.7 ng/mI) to reach the maxiniun value in therearingperiod(x± s= 10.33 ± 1.8 ng/ml ; 13.6± 1.9 ng/mI). Accompanying these changes a marked predoniinancc of theniedullary zone over the cortex and lack of developing follicles were found in the rearing state.
|
| publisher |
Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología |
| publishDate |
1994 |
| url |
https://revistas.unc.edu.ar/index.php/med/article/view/40933 |
| work_keys_str_mv |
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2024-09-03T21:04:30Z |
| last_indexed |
2024-09-03T21:04:30Z |
| _version_ |
1809210378250354688 |