1. Comparison of estradiol and progesteron serum levels in ferrets suffering from hyperoestrogenism and ovarian neoplasia
- Author
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M. Vyskocil, Vladimir Jekl, Zdenek Knotek, Karel Hauptman, and Gerry M. Dorrestein
- Subjects
Estrous cycle ,medicine.medical_specialty ,General Veterinary ,040301 veterinary sciences ,business.industry ,030231 tropical medicine ,OVARIAN NEOPLASIA ,04 agricultural and veterinary sciences ,Serum progesterone ,Diagnostic tools ,0403 veterinary science ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,Blood serum ,medicine.anatomical_structure ,Internal medicine ,medicine ,Hyperoestrogenism ,Bone marrow ,Ovarian tumours ,business - Abstract
The aim of this study was to determine whether serum levels of 17beta-estradiol and progesterone are significant diagnostic tools for the confirmation of specific reproductive diseases associated with hyperes - trogenism. Thirty-one adult ferrets (Mustela putorrius furo) were divided into five groups. The levels of serum 17beta-estradiol differed significantly when comparing females with ovarian tumors (817.80 ± 433.90 pmol/l) to intact (83.50 ± 32.53 pmol/l) and spayed, healthy females (73.17 ± 0.41 pmol/l) as well as to females with prolonged estrus (274.75 ± 192.40 pmol/l). Concentrations of serum progesterone differed significantly when comparing females with ovarian tumours (2.10 ± 1.85 ng/ml) to intact (0.40 ± 0.40 ng/ml) and spayed, healthy females (0.30 ± 0.12 ng/ml). Our study has made it clear that a determination of serum concentrations of 17-beta estradiol and progesterone is not sufficient for distinguishing between prolonged estrus and the presence of ovarian tumours. Therefore, it is advisable to employ other clinical procedures, such as ones allowing organ visualization. Increased concentrations of 17beta-estradiol in ferrets persisted for two weeks after hCG administration. This is particularly important in clinical practice, as negative effects of estrogens on bone marrow could persist for more than 14 days. Therefore, ferrets should be clinically monitored for a longer period of time.
- Published
- 2009
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