scholarly journals Activity of Three-β-Hydroxysteroid Dehydrogenase in Granulosa Cells Treated in Vitro with Luteinizing Hormone, Follicle-Stimulating Hormone, Prolactin, or a Combination

2006 ◽  
Vol 85 (10) ◽  
pp. 1769-1774 ◽  
Author(s):  
H. Taira ◽  
M.M. Beck
Keyword(s):  
Luteinizing Hormone ◽  
Granulosa Cells ◽  
Follicle Stimulating Hormone ◽  
Hydroxysteroid Dehydrogenase ◽  
Stimulating Hormone

Peripheral and local regulators of folliculogenesis

1994 ◽  
Vol 6 (2) ◽  
pp. 127 ◽  
Author(s):  
JK Findlay
Keyword(s):  
Luteinizing Hormone ◽  
Granulosa Cells ◽  
Follicle Stimulating Hormone ◽  
Follicular Atresia ◽  
Local Regulation ◽  
Premature Luteinization ◽  
Stimulating Hormone

The role of the gonadotrophins follicle-stimulating hormone (FSH) and luteinizing hormone and the putative local regulators, activin and follistatin, in the control of folliculogenesis is reviewed. An account of early work on the development and application of assays for FSH and inhibin is given, together with a summary of the data on the ovarian responsiveness to gonadotrophin and follicular atresia. Models for studying local regulation of granulosa cells in vitro are described and the data from these experiments reviewed. It is concluded that activin has a role in the development and maintenance of healthy oestrogenic follicles, preventing premature luteinization, whereas follistatin opposes these effects of activin and promotes luteinization or atresia.

scholarly journals The ratio of exogenous Luteinizing hormone to Follicle stimulating hormone administered for controlled ovarian stimulation is associated with oocytes’ number and competence

2020 ◽  
Vol 40 (1) ◽  
Author(s):  
Dragos Albu ◽  
Alice Albu
Keyword(s):  
Luteinizing Hormone ◽  
Ovarian Stimulation ◽  
Follicle Stimulating Hormone ◽  
Fertilization Rate ◽  
Controlled Ovarian Stimulation ◽  
Human Menopausal Gonadotropin ◽  
Male Factor ◽  
Entire Study ◽  
Stimulating Hormone

Abstract We performed a retrospective study aiming to study the relationship between the ratio of the exogenous luteinizing hormone to follicle stimulating hormone (LH/FSH) administrated for controlled ovarian stimulation (COS) and the number and competence of the oocytes retrieved for in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). Eight hundred sixty-eight consecutive infertile patients (mean age 34.54 ± 4.01 years, mean anti-Müllerian hormone (AMH) 2.94 ± 2.07 ng/ml) treated with long agonist protocol and a mixed gonadotropin protocol (human menopausal gonadotropin in association with recombinant FSH (recFSH)) who performed IVF/ICSI between January 2013 and February 2016, were included. Patients with severe male factor were excluded. LH/FSH was calculated based on total doses of the two gonadotropins. We found, after adjustment for confounders, a positive relationship between LH/FSH and the retrieved oocytes’ (β = 0.229, P<0.0001) and zygotes’ number (β = 0.144, P<0.0001) in the entire study group and in subgroups according to age (<35 and ≥35 years) and ovarian reserve (AMH < 1.1 and ≥ 1.1 ng/ml). The fertilization rate was positively associated with LH/FSH in patients with LH/FSH in the lowest three quartiles (below 0.77) (β = 0.096, P=0.034). However, patients in the fourth quartile of LH/FSH had a lower fertilization rate as compared with patients in quartiles 1–3 which, after adjustment for covariates, was only marginally negatively related with LH/FSH (β = −0.108, P=0.05). In conclusion, our results suggest that the adequate LH/FSH administrated during COS can improve the oocytes’ and zygotes’ number in IVF/ICSI cycles, but also the fertilization rate when a certain proportion of LH/FSH is not exceeded.

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