Noting that high estrogen concentrations are «a defining characteristic
of dominant follicles,» Dr. Denis Magoffin (Ceders - Sinai Medical Center, Los Angeles, California, USA) and co-investigators examined whether abnormal expression of ERs could contribute to poor follicular development and ovulatory failure in women with PCOS.
The Cue Peak is a high oral reading followed by two lower oral readings (a trend spanning three days), which coincides with the selection
of the dominant follicle in the ovary.
Lockwood G.M, Muttukrishna S, Groome N.P, Matthews D.R, Ledger W.L, Mid-follicular phase pulses of inhibin B are absent in polycystic ovarian syndrome and are initiated by successful laparoscopic ovarian diathermy: a possible mechanism regulating emergence
of the dominant follicle, Journal of Clinical Endocrinology & Metabolism, 1998.
In a typical, 28 - day cycle, the selection
of the dominant follicle occurs approximately 5 - 7 days before ovulation.
By tracking the changes in the concentration of electrolytes in your saliva, the OvaCue ® Fertility Monitor is able to detect the hormonal changes that coincide with the selection
of the dominant follicle.
Not exact matches
As its name implies, FSH stimulates a selected group
of follicles each month to begin the process
of moving through the pre-ovulatory development phases with one
of these lucky contestants emerging in the end as the
dominant follicle.
Throughout these reproductive years
of our lives, for every one
dominant follicle we select, we lose, on average, 1,000 primordial
follicles!
Out
of this group, one
follicle (the
dominant follicle) is selected each month to proceed to the pre-ovulatory stage while the rest undergo atresia.
The ovaries have selected the
dominant follicle by now and with an intricate interplay
of hormones the
follicle bursts open releasing the egg to the fallopian tube.
Multiple follicular stimulation can occur if the
dominant follicle does not mature or rupture as expected (perhaps due to a timing issue with the secretion
of luteinizing hormone or some other hormone imbalance).
Estrogen (from estrus, meaning «heat» or «fertility») is the
dominant hormone for the first week or so after menstruation, stimulating the buildup
of tissue and blood in the uterus as the ovarian
follicles simultaneously begin their development
of the egg.
When these
follicles finally reach the beginning
of the 28 - day cycle that they have been preparing for, they will compete for
follicle - stimulating hormone to become the
dominant follicle.