scholarly journals Clinical Applications of Ultrasound in Assessment of Follicle Development and Growth

2007 ◽  
Vol 1 (2) ◽  
pp. 50-63 ◽  
Author(s):  
V Vlaisavljevic ◽  
M Došen
Keyword(s):  
Blood Volume ◽  
Clinical Success ◽  
Clinical Applications ◽  
Follicular Phase ◽  
Growth Patterns ◽  
Follicle Development ◽  
Pulsed Doppler ◽  
Dominant Follicle ◽  
Follicle Growth ◽  
Late Follicular Phase

Abstract Monitoring of individual follicles during the menstrual cycle demonstrates in a noninvasive way the changes in their number and position during the early and the late follicular phase and the luteal phase. The differences in relations between the follicles near the dominant follicle can be demonstrated with the same technique using 3D reconstruction of the ovary. An increased perifollicular blood flow can be measured in the perifollicular period using color and pulsed Doppler. Automated estimation of blood volume around the ovarian follicles brought a new concept to this area. Results confirm the observation that vascularity around the follicle is intense in the periovulatory period. The blood volume does not differ between follicles containing an oocyte and those with no oocyte in the aspirate, or a nonfertilizable oocyte. From our results we can hypothesize that those follicles containing oocytes able to produce pregnancy have a more uniform perifollicular vascular network . Recognition of the follicle growth pattern has a prognostic value for the outcome of assisted reproduction methods. Follicular diameter and changes in growth patterns are more important than follicular wall thickness as parameters having an impact on clinical success.

scholarly journals Echographic Evidence of Follicle Development and Maturation

2011 ◽  
Vol 5 (3) ◽  
pp. 267-272 ◽  
Author(s):  
Veljko Vlaisavljevic
Keyword(s):  
Luteal Phase ◽  
Clinical Success ◽  
Follicular Phase ◽  
Growth Patterns ◽  
Follicle Development ◽  
Pulsed Doppler ◽  
Dominant Follicle ◽  
Follicle Growth ◽  
Non Invasive ◽  
Late Follicular Phase

ABSTRACT Monitoring of individual follicles during the menstrual cycle demonstrates in a non-invasive way the changes in their number and position during the early and the late follicular phase and the luteal phase. The differences in relations between the follicles near the dominant follicle can be demonstrated with the same technique using 3D reconstruction of the ovary. Recognition of the follicle growth pattern has a prognostic value for the outcome of assisted reproduction methods. Follicular diameter and changes in growth patterns are more important than follicular wall thickness as parameters having an impact on clinical success. An increased perifollicular blood flow can be measured in the perifollicular period using color and pulsed Doppler. Automated estimation of blood volume around the ovarian follicles brought a new concept to this area. Results confirm the observation that vascularity around the follicle is intense in the periovulatory period. From our results we can hypothesize that those follicles containing oocytes able to produce pregnancy have a prominent and more uniform perifollicular vascular network .

scholarly journals Low-dose exogenous FSH initiated during the early, mid or late follicular phase can induce multiple dominant follicle development

2001 ◽  
Vol 16 (5) ◽  
pp. 846-854 ◽  
Author(s):  
F.P. Hohmann ◽  
J.S.E. Laven ◽  
F.H. de Jong ◽  
M.J.C. Eijkemans ◽  
B.C.J.M. Fauser
Keyword(s):  
Low Dose ◽  
Follicular Phase ◽  
Follicle Development ◽  
Dominant Follicle ◽  
Late Follicular Phase

scholarly journals Is the Short Follicular Phase in Older Women Secondary to Advanced or Accelerated Dominant Follicle Development?

2002 ◽  
Vol 87 (12) ◽  
pp. 5746-5750 ◽  
Author(s):  
Nancy A. Klein ◽  
Andrew J. Harper ◽  
Brenda S. Houmard ◽  
Patrick M. Sluss ◽  
Michael R. Soules
Keyword(s):  
Older Women ◽  
Follicular Phase ◽  
Follicle Development ◽  
Dominant Follicle

scholarly journals Effect of One-Day Delaying CIDR Administration in 5-Day Cosynch Protocol in Dairy Heifers

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1402
Author(s):  
Sükrü Metin Pancarci ◽  
Örsan Güngör ◽  
Osman Harput ◽  
Oguz Calisici
Keyword(s):  
Artificial Insemination ◽  
Follicle Development ◽  
Dominant Follicle ◽  
Dairy Heifers ◽  
Reproductive Management

Effect of one-day delaying progesterone administration at the beginning of 5-day Cosynch protocol was investigated in Holstein heifers for the first artificial insemination (AI). Heifers received a synchronized ovulation and timed AI (TAI) with CIDR inserted on day (d) 0 (CIDR-5; n = 206) or d 1 (CIDR-4; n = 192). In both group, GnRH was administered on d 0 followed by a single PGF2α injection and CIDR removal five days later from GnRH. On d 8, TAI and GnRH administration were concurrently conducted. Heifers detected in estrus up to 24 h prior to TAI were inseminated without GnRH administration. Rates of ovulation, accessory CL formation and new dominant follicle development following initial GnRH injection did not differ between groups. P/AI did not differ between CIDR-4 (44.3%, [85/192]) and CIDR-5 (51.9%, [107/206]) groups, respectively. Pregnancy per AI (P/AI) was significantly (p < 0.01) declined as heifers’ age (12–13, 14, 15, 16 and17–21 months) proceeded in CIDR-4 group (55.6%, 52.1%, 37.9%, 35.7%, 32.4%) compared to those in CIDR-5 group (60.0%, 50.0%, 53.9%, 51.5%, 46.2%) respectively. In conclusion, there is no benefit for delaying CIDR administration in 5-day Cosynch protocol in dairy heifers. However, higher P/AI in CIDR-5 group in older heifers can be considered for reproductive management.

CHANGES IN THE CONCENTRATION OF PITUITARY AND STEROID HORMONES IN THE FOLLICULAR FLUID OF HUMAN GRAAFIAN FOLLICLES THROUGHOUT THE MENSTRUAL CYCLE

1975 ◽  
Vol 64 (3) ◽  
pp. 555-571 ◽  
Author(s):  
K. P. McNATTY ◽  
W. M. HUNTER ◽  
A. S. McNEILLY ◽  
R. S. SAWERS
Keyword(s):  
Menstrual Cycle ◽  
Steroid Hormones ◽  
Follicular Fluid ◽  
Follicle Stimulating Hormone ◽  
Secretory Activity ◽  
Follicular Phase ◽  
Hormonal Changes ◽  
Peripheral Plasma ◽  
Before And After ◽  
Late Follicular Phase

SUMMARY The concentrations of FSH, LH, prolactin, oestradiol and progesterone were measured in peripheral plasma and follicular fluid of women throughout the menstrual cycle. With the exception of prolactin, concentrations of pituitary and steroid hormones in follicular fluid correlated with those in peripheral plasma. Follicle-stimulating hormone was present in a greater number of small follicles ( < 8 mm) during or just after the peaks of FSH in peripheral plasma. During the mid-follicular phase the concentration of both FSH and oestradiol in fluid from large follicles ( ≥ 8 mm) was high. During the late follicular phase the large follicles ( ≥ 8 mm) contained high amounts of progesterone in addition to oestradiol, low physiological levels of prolactin, and concentrations of LH and FSH about 30 and 60% respectively of those found in plasma. By contrast no large 'active' follicles ( ≥ 8 mm) were found during the luteal phase although many contained both LH and FSH. Luteinizing hormone was present in a proportion of small follicles ( < 8 mm) during the late follicular and early luteal but not at other stages of the menstrual cycle. It is suggested that a precise sequence of hormonal changes occur within the microenvironment of the developing Graafian follicle; the order in which they occur may be of considerable importance for the growth of that follicle and secretory activity of the granulosa cells both before and after ovulation.

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