Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition
Blood samples from ten Swedish dairy cows were taken one month before calving, at calving, and one month after calving. The blood concentration of vitamins A and E, and the trace element selenium (Se) were analysed, as well as the total and differential white blood cell counts,a nd the presenceo f CD62L and CD18 adhesionm oleculeso n blood neutrophils. The levels of vitamins A and E decreased significantly at calving, while whole blood Se increased Leukocytosisw as detectedat calving, explainedm ainly by neutrophilia.T he number of lymphocytest endedt o decreasea t calvrng.T he proportion of CD62L- neutrophilsd ecreased sisnlficantlv at this ttme
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oai:ojs.cerac.unlpam.edu.ar:article-20172018-05-03T18:33:44Z Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition Cambios en los niveles sanguíneos de vitaminas A y E, selenio, leucocitos y expresión de moléculas de BR adhesión para migración en neutrófilos en vacas lecheras alrededor del parto Meglia, Guillermo Esteban Johannisson, Anders Petersson, L Persson Waller, Karin Dairy cows Immunity Leucocytes Vitamins Vacas lecheras Inmunidad Leucocitos Vitaminas Blood samples from ten Swedish dairy cows were taken one month before calving, at calving, and one month after calving. The blood concentration of vitamins A and E, and the trace element selenium (Se) were analysed, as well as the total and differential white blood cell counts,a nd the presenceo f CD62L and CD18 adhesionm oleculeso n blood neutrophils. The levels of vitamins A and E decreased significantly at calving, while whole blood Se increased Leukocytosisw as detectedat calving, explainedm ainly by neutrophilia.T he number of lymphocytest endedt o decreasea t calvrng.T he proportion of CD62L- neutrophilsd ecreased sisnlficantlv at this ttme La susceptibilidada las enfermedadesin fecciosas,tales como la mastitis, en vacas lecheras es muy alta durante el período alrededor del parto. Los mecanismos de defensa del animal están disminuidos desde aproximadamente tres semanas antes del parto hasta tres semanas despues. Las causas no son claras, sin embargo ocurren una serie de cambios metabòlicos y hormonales durante este periodo, los cuales pueden influr negativamente sobre el sistema inmunitario. En este ensayo se tomaron muestras de sangre de diez vacas lecheras (raza Roja y Blanca Sueca) un mes antes del parto, al parto y un mes después del mismo. Las concentracioness éricasd e vitaminas A y E, y los niveles de selenio (Se) en sangre fueron analizados, como así también el número y diferenciación ieucocitarios, y la presencia de moléculas de adhesión para migración CD62L y CD18 en neutrófilos. Los niveles de vitaminas A y E disminuyeron significativamente al parto, mientras que los de Se aumentaron. En este momento también fue detectada una leucocitosis, expiicada por neutrofilia y linfopenia. Las proporciones de neutrófilos positivos a CD62L disminuyeron significativamente al parto. Los cambioso bservadose n 1osn iveles sanguíneos de vitaminas y Se fueron principalmente en respuesta a la formación de calostro, a cambios en la ingesta de materia seca y a el metabolismo ruminal. Los bajos niveles de vitaminas A y E pueden tener efectos negativos en el funclonamiento del sistema inmunitario. Las menores proporciones de neutrófilos positivos a CD62L al parto resultarían en menor migración hacla los tejidos, contribuyendoa un aumento en la susceptibilidada enfetmedades como mastitis EdUNLPam 2017-09-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://cerac.unlpam.edu.ar/index.php/veterinaria/article/view/2017 Ciencia Veterinaria; Vol. 2 Núm. 1 (2000); 74-82 1853-8495 1515-1883 spa https://cerac.unlpam.edu.ar/index.php/veterinaria/article/view/2017/1969 Derechos de autor 2017 Ciencia Veterinaria |
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Meglia, Guillermo Esteban Johannisson, Anders Petersson, L Persson Waller, Karin |
| spellingShingle |
Meglia, Guillermo Esteban Johannisson, Anders Petersson, L Persson Waller, Karin Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| author_facet |
Meglia, Guillermo Esteban Johannisson, Anders Petersson, L Persson Waller, Karin |
| author_sort |
Meglia, Guillermo Esteban |
| title |
Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| title_short |
Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| title_full |
Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| title_fullStr |
Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| title_full_unstemmed |
Changes in blood vitamins A and E, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| title_sort |
changes in blood vitamins a and e, selenium, leukocytes and neutrophil expression of adhesion molecules in dairy cows around parturition |
| description |
Blood samples from ten Swedish dairy cows were taken one month before calving, at calving, and one month after calving. The blood concentration of vitamins A and E, and the trace element selenium (Se) were analysed, as well as the total and differential white blood cell counts,a nd the presenceo f CD62L and CD18 adhesionm oleculeso n blood neutrophils. The levels of vitamins A and E decreased significantly at calving, while whole blood Se increased Leukocytosisw as detectedat calving, explainedm ainly by neutrophilia.T he number of lymphocytest endedt o decreasea t calvrng.T he proportion of CD62L- neutrophilsd ecreased sisnlficantlv at this ttme |
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EdUNLPam |
| publishDate |
2017 |
| url |
https://cerac.unlpam.edu.ar/index.php/veterinaria/article/view/2017 |
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