| Autor: |
Seamans KW, Harms PG, Atkins DT, Fleeger JL |
| Jazyk: |
angličtina |
| Zdroj: |
Steroids [Steroids] 1979 Jan; Vol. 33 (1), pp. 55-63. |
| DOI: |
10.1016/s0039-128x(79)80006-9 |
| Abstrakt: |
Blood samples were collected from eight mares for ten days before and two days following parturition. Progesterone, 5 alpha-dihydroprogesterone and hydroxy-5 alpha-pregnanones were extracted from serum, separated by Sephadex LH-20 column chromatography and quantitated by radioimmunoassay. Progesterone levels ranged from 8.5 to 4.1 ng/ml among mares with normal parturition and decreased to 1.2 ng/ml after parturition. One mare with a retained placenta maintained the prepartal levels of progesterone into the postpartum period. 5 alpha-dihydroprogesterone increased to a level of 133 ng/ml at 80 hrs before parturition and began decreasing and reached a level of 9.2 ng/ml in the postpartum period. Levels of hydroxy-5 alpha-pregnanones were variable with a high of 1690 ng/ml and declined to a postpartum level of 60 ng/ml. The timing of the decline varied among the mares. The possible source and significance of these progestins remain speculative. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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