Effect of ovarian stimulation with human menopausal gonadotropin and recombinant follicle stimulating hormone on the expression of integrins alpha3, beta1 in the rat endometrium during the implantation period.
OBJECTIVE
To investigate the effect of exogenous ovarian stimulation with human menopausal gonadotropin (hMG) and recombinant follicle stimulating hormone (rFSH) on the expression of integrins alpha(3), beta(1) in the rat endometrium during implantation.


METHODS
Following three successive normal estrous cycles the animals were divided into five groups: Group I (n=10, control group) received no medication; Group II (n=10) received 10 units of hMG; Group III (n=10) received 20 units of hMG; Group IV (n=10) received 10 units of rFSH; Group V (n=10) received 20 units of rFSH at midday of middiestrous. The rats were then mated with fertile males. The animals were sacrificed on the day of implantation. The uterine horns were placed in fixative and paraffin blocks of the tissue were cut in 5 microm sections. The tissues were stained with primary antibodies; monoclonal anti-integrin alpha(3) and monoclonal anti-integrin beta(1) using immunohistochemical methods. The staining intensities of alpha(3) and beta(1) integrins were calculated separately for epithelium and stroma in each group.


RESULTS
Staining intensities of alpha(3) and beta(1) integrins in both the epithelium and the stroma were significantly lower in the treatment groups than the control group (p<0.05).


CONCLUSIONS
Ovarian stimulation by low and high doses of HMG and rFSH may have an effect on endometrial receptivity, possibly via a decrease in expression of integrins in the endometrium during the implantation period.
Sendag
Fatih
F
Department of Obstetrics and Gynecology, School of Medicine, Ege University, 35100 Izmir, Turkey. fatih.sendag@gmail.com
Akdogan
Ayşin
A
Ozbilgin
Kemal
K
Giray
Gülşen
G
Oztekin
Kemal
K
D000818:Animals; D010064:Embryo Implantation / Q000502:physiology*; D004717:Endometrium / Q000187:drug effects / Q000378:metabolism*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000494:pharmacology*; D039422:Integrin alpha3 / Q000096:biosynthesis; D039201:Integrin alpha3beta1 / Q000096:biosynthesis* / Q000235:genetics; D019012:Integrin beta1 / Q000096:biosynthesis; D008596:Menotropins / Q000008:administration & dosage / Q000494:pharmacology*; D010062:Ovulation Induction / Q000379:methods*; D051381:Rats
D039422:Integrin alpha3; D039201:Integrin alpha3beta1; D019012:Integrin beta1; D008596:Menotropins; D005640:Follicle Stimulating Hormone