objective: to evaluate the impact of luteal phase support with vaginal progesterone on pregnancy rates in the intrauterine insemination (iui) cycles, stimulated with clomiphene citrate and human menopausal gonadotropin (hmg), in sub fertile couples. materials and methods: this prospective, randomized, double blind study was performed in a tertiary infertility center from march 2011 to january 2...

BACKGROUND The menstrual cycle influences pain, with symptoms often increasing during the premenstrual (late-luteal) phase. Deficiencies in endogenous inhibition of afferent nociception at the spinal level might contribute to menstrual phase-related changes in pain. PURPOSE This study assessed whether conditioned pain modulation (CPM) of spinal nociception differs between mid-follicular and l...

BACKGROUND To assess the impact of luteal phase support on the expression of estrogen receptor (ER) alpha and progesterone receptors B (PR-B) on the endometrium of oocyte donors undergoing controlled ovarian hyperstimulation (COH). METHODS A prospective, randomized study was conducted in women undergoing controlled ovarian hyperstimulation for oocyte donation. Participants were randomized to ...

The cyclic changes of menstrual cycle alter the pharmacokinetics of levofloxacin. The effect of follicular and luteal phase on levofloxacin pharmacokinetics was studied in 15 healthy female volunteers taking a single dose of 500mg tablet on day 10 (follicular phase) and day 21 (luteal phase ). Levofloxacin levels in saliva samples at different time points were estimated by HPLC. Follicular phas...

After first postpartum ovulation most cows have a short luteal phase due to a premature secretion of PGF2a from the uterus. Pregnancy rate in estrous cycles with short luteal phases is essentially nil. The lack of exposure of the uterus to P4 and estrogen prior to first postpartum ovulation decreases the concentration of P4 receptors and up regulates oxytocin receptors. The inadequate number of...

background: supplementation of luteal phase with progesterone is prescribed for women undergoing routine ivf treatment. objective: the objective of this study was to compare the efficacy of three types of progesterone on biochemical, clinical and ongoing pregnancy rates and abortion and live birth rates. materials and methods: a prospective randomized study was performed at royan institute betw...

background: the application of luteal phase supplementation hormones to increase the implantation rate is on debate among researchers. objective: in this study, the morphological and morphometrical assessment of superovulated mice endometrium were investigated at window implantation period superovulated mice. materials and methods: female mice were superovualated then were mated with vasectomiz...

Canine reproductive physiology exhibits several unusual features. Among the most interesting of these are the lack of an acute luteolytic mechanism, coinciding with the apparent luteal independency of a uterine luteolysin in absence of pregnancy, contrasting with the acute prepartum luteolysis observed in pregnant animals. These features indicate the existence of mechanisms different from those...

The study was conducted on Surti buffaloes for follicular dynamics and endocrine profile during normal estrous cycle (n=6) early pregnancy (n=6). In cyclic pregnant buffaloes, one-wave (33.33% vs. 50.00%) two-waves (66.66% development recorded, without three-wave pattern. buffalo, the length of duration inter-ovulatory interval were little shorter in one wave cycles than two (22.50±0.50 23.25±0...

background: the aim of this study, we have compared the advantages of oral dydrogestrone with vaginal progesterone (cyclogest) for luteal support in intrauterine insemination (iui) cycles. progesterone supplementation is the first line treatment when luteal phase deficiency (lpd) can reasonably be assumed. objective: this study was conduct to compare the effect of oral dydrogestrone with vagina...