| Colour Doppler sonography of cystic ovarian follicles in cows. | |
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MedLine Citation:
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PMID: 18787308 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The goals of the present study were to investigate whether colour Doppler sonography can be used to differentiate temporary from persistent ovarian follicles and follicles with luteal tissue from follicles without luteal tissue and to assess the response of follicular cysts to administration of a gonadotropin releasing hormone (GnRH) analogue. Fifty-four cows having ovarian follicular structures with a diameter of >15 mm but no corpus luteum were included. These cows were examined via B-mode and colour Doppler sonography. The same examinations were repeated 10 to 12 days later, and the cows with follicular cysts (n=17) received a GnRH analogue. Blood flow was measured before and 30 min after treatment. Ten to 12 days later, the response to treatment was assessed using B-mode sonography. While 31 of 54 follicles disappeared spontaneously (temporary follicles), 23 follicles persisted and were diagnosed as cystic ovarian follicles (COFs). There was no difference between temporary follicles and COFs in regard to total area, wall thickness or the perfused area. In the luteinized follicles (n=13), based on the plasma progesterone concentration, total area was twice as large, wall thickness was three times greater and the perfused area was 4.5 times larger than those of the non-luteinized follicles (n=41). The sensitivity of diagnosing luteinized follicles was 61.5% using B-mode sonography and 92.3% using colour Doppler sonography. Twelve cows responded to GnRH, and five cows did not. There was a trend (P=0.07) toward higher (59.3%) blood flow in the cyst wall 30 min after treatment in the responding cows compared with the non-responding cows. Our results showed that the perfused area more accurately reflects active luteal tissue than wall thickness. Thus, colour Doppler sonography is superior to B-mode sonography for differentiating follicular and luteal cysts and aids in the selection of treatment. However, exact prediction of COFs destined to regress or persist and the response of COFs to treatment with a GnRH analogue were not possible using colour Doppler sonography. |
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Authors:
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Alexandra Rauch; Lars Krüger; Akio Miyamoto; Heinrich Bollwein |
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Publication Detail:
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Type: Journal Article Date: 2008-09-12 |
Journal Detail:
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Title: The Journal of reproduction and development Volume: 54 ISSN: 0916-8818 ISO Abbreviation: J. Reprod. Dev. Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2009-01-08 Completed Date: 2009-02-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9438792 Medline TA: J Reprod Dev Country: Japan |
Other Details:
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Languages: eng Pagination: 447-53 Citation Subset: IM |
Affiliation:
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Clinic for Cattle, University of Veterinary Medicine Hannover, Hannover, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cattle Cattle Diseases / ultrasonography* Female Gonadotropin-Releasing Hormone / analogs & derivatives Luteinization Ovarian Cysts / drug therapy, ultrasonography, veterinary* Ovarian Follicle / blood supply, ultrasonography Progesterone / blood Ultrasonography, Doppler, Color / veterinary* |
| Chemical | |
Reg. No./Substance:
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33515-09-2/Gonadotropin-Releasing Hormone; 57-83-0/Progesterone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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