| Interrelationships among follicles during the common-growth phase of a follicular wave and capacity of individual follicles for dominance in mares. | |
| | |
MedLine Citation:
|
PMID: 15454636 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The changing diameter interrelationships among follicles during the interval from emergence to deviation (common-growth phase) were studied in 59 mares. All follicles of > or =6.0 mm were ablated 10 days after ovulation. The four largest follicles of the postablation wave were ranked D1, D2, D3 and D4 at the expected beginning of deviation (D1 > or = 20.0 mm), according to descending diameter. The four follicles were also ranked independently, according to order of emergence at 6.0-6.9 mm as E1 (first to emerge), E2, E3 and E4. The follicles emerged during 1.3 +/- 0.1 to 3.1 +/- 0.1 days, and expected deviation began 6.5 +/- 0.1 days after ablation. The frequency of emerging follicles becoming the largest follicle at the beginning of deviation was different (P < 0.0001; chi-square test) among follicles E1 (61%), E2 (25%), E3 (9%) and E4 (5%). There were no differences in growth rates among the four follicles throughout the common-growth phase (overall, 2.8 +/- 0.04 mm/day). The differences in diameters between follicles E1 and E2 were similar between 3 days (2.7 +/- 0.2 mm) and 6 days (2.9 +/- 0.4 mm) after ablation. In controls and after ablation of D1; D1 and D2; or D1, D2 and D3 at the expected beginning of deviation, the largest remaining follicle became dominant in 26 of 34 mares (76%). In 10 of 15 mares (67%), the second-largest follicle became dominant when the largest follicle was ablated 1 or 2 days after the expected beginning of deviation. Results indicated the following: 1) the first follicle to emerge maintained its diameter advantage in most mares and average diameter growth rates were similar among the four follicles throughout the common-growth phase; 2) the hypothesis was supported that the capacity for dominance is similar among the four largest follicles at the beginning of deviation, but dominance by a smaller follicle is blocked when a larger follicle is present; and 3) the second-largest follicle retained the capacity for dominance in most mares for as long as 2 days after the beginning of deviation. |
| | |
Authors:
|
E L Gastal; M O Gastal; M A Beg; O J Ginther |
Related Documents
:
|
22931976 - Outcome of in vitro fertilization in endometriosis-associated infertility: a 5-year dat... 19144026 - Inhba-associated markers as candidates for stallion fertility. 23162366 - Heterotropic pregnancy: rare occurrence of a 12- week ruptured right isthmo-cornual ect... 2648816 - Adequacy of "hot biopsy" for the treatment of diminutive polyps: a prospective randomiz... 2910706 - Effects of the severity of tubo-ovarian disease and previous tubal surgery on the resul... 14709646 - Invasive trophoblast antigen (hyperglycosylated human chorionic gonadotropin) in second... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Reproduction (Cambridge, England) Volume: 128 ISSN: 1470-1626 ISO Abbreviation: Reproduction Publication Date: 2004 Oct |
Date Detail:
|
Created Date: 2004-09-29 Completed Date: 2004-12-17 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 100966036 Medline TA: Reproduction Country: England |
Other Details:
|
Languages: eng Pagination: 417-22 Citation Subset: IM |
Affiliation:
|
Eutheria Foundation, Cross Plains, Wisconsin 53528, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Catheter Ablation Estrous Cycle / physiology* Female Horses / physiology* Ovarian Follicle / physiology*, surgery, ultrasonography Ovulation / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The role of calcium/calmodulin-dependent protein kinase II on the inactivation of MAP kinase and p34...
Next Document: The human corpus luteum: which cells have progesterone receptors?