Expression of RFamide-related peptide-3 [RFRP-3] mRNA in dorsomedial hypothalamic nucleus and KiSS-1 mRNA in arcuate nucleus of rat during pregnancy
IJFS-International Journal of Fertility and Sterility. 2014; 8 (3): 333-340
Dans Anglais
| IMEMR
| ID: emr-148949
ABSTRACT
RFamide-related peptide-3 [RFRP-3] and kisspeptin [KiSS-1] are known to respectively inhibit and stimulate gonadotropin releasing hormone [GnRH] and luteinizing hormone [LH] secretion in rat. The aim of the present study was to evaluate the relative mRNA expression of RFRP-3 and KiSS-1 in the hypothalamus of pregnant rats. In a randomized controlled experimental study, the exact pregnancy day of 18 Sprague-Dawley rats were confirmed using the vaginal smear method and were equally assigned to three groups of days 7, 14 and 21 of pregnancy. Four non-pregnant female rats were ovariectomized and assigned as the control group. All rats were decapitated, and the dorsomedial hypothalamic nucleus [DMH] and the arcuate nucleus [ARC] for detection of KiSS-1 mRNA were separated from their hypothalamus to detect RFRP-3 and KiSS-1 mRNA respectively. Then, their relative expressions were compared between control and pregnant groups using real-time polymerase chain reaction [PCR]. The relative expression of RFRP-3 mRNA in DMH did not change significantly during pregnancy [p>0.01]. However, the relative expression of KiSS-1 mRNA in ARC was at its highest in day 7 of pregnancy and decreased until day 21 of pregnancy [p<0.01]. Decrease in GnRH and LH secretion during the pregnancy of rat may be controlled by constant expression of RFRP-3 mRNA and reduced expression of KiSS-1 mRNA in hypothalamus
Recherche sur Google
Indice:
Méditerranée orientale
Sujet Principal:
Noyau arqué de l'hypothalamus
/
Grossesse
/
ARN messager
/
Rat Sprague-Dawley
/
Noyau hypothalamique dorsomédial
/
Kisspeptines
Type d'étude:
Essai clinique contrôlé
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Int. J. Fertil. Steril.
Année:
2014
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS