Abstract |
Uterine secretions were collected nonsurgically from 15 normal and 9 repeat-breeder Holstein and Jersey cows on d 0 and 5, 10, or 15 of an estrous cycle. Uterine flushings presented 19 protein bands in one-dimensional PAGE, but only 16 bands were found in gels of plasma samples of normal and repeat-breeder cows. Red blood cell contamination of uterine flushings ranged from 50,400 to 4,940,000 cells/ml of flush recovered for visibly clear samples to over 17 x 10(6) cells/ml in obviously red samples. A prealbumin (electrophoretic mobility relative to albumin; Ra 1.28) and a pretransferrin (Ra .72) were found in uterine flushings. A possible uterine protein (Ra .35) was probably a hemoglobin-like contaminant. Data suggest that differences in peripheral plasma progesterone concentrations during the estrous cycle in repeat-breeder cattle may provide the basis for altered synthesis or secretion of uterine proteins needed for development by early embryos.
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Authors | M B Guise, F C Gwazdauskas |
Journal | Journal of dairy science
(J Dairy Sci)
Vol. 70
Issue 12
Pg. 2635-41
(Dec 1987)
ISSN: 0022-0302 [Print] United States |
PMID | 3448111
(Publication Type: Journal Article)
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Chemical References |
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Topics |
- Animals
- Cattle
(metabolism, physiology)
- Estrus
(physiology)
- Female
- Infertility, Female
(physiopathology, veterinary)
- Pregnancy
- Pregnancy Complications
(veterinary)
- Pregnancy, Animal
(blood, physiology)
- Progesterone
(blood)
- Proteins
(analysis, metabolism)
- Therapeutic Irrigation
(veterinary)
- Uterus
(metabolism)
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