Supplements and Botanicals · Antioxidant Supplements
Lédée-Bataille N et al., 2002 · Hum Reprod
To evaluate the effect of an antifibrotic treatment by a combination of pentoxifylline (PTX) and tocopherol (vitamin E) in patients with a thin endometrium who were enrolled in an oocyte donation programme. Eighteen oocyte recipients who failed to develop a pre-ovulatory endometrial thickness of at least 6 mm after receiving vaginal micronized estradiol were enrolled in the study. The patients received a combination of PTX (800 mg/day) and vitamin E (1000 IU/day) for 6 months. The main outcome measurements were the change in endometrial thickness and the pregnancy and delivery rates after treatment. Endometrial thickness increased significantly (P <0.001), with a mean of (+/-SD) 4.9 +/-0.6 mm before and 6.2 +/- 1.4 mm after treatment, with 72% (13/18) of patients being good responders. Five patients either did not respond to the treatment or responded only slightly. Three patients, of which two had received previous radiotherapy, became spontaneously pregnant, and two became pregnant after embryo transfer. Three patients did not have embryo transfer. A total of four babies were delivered. The pregnancy rate was thus 33% and the delivery rate 27%. Treatment by combination of PTX and vitamin E appears to improve the pregnancy rate in patients with a thin endometrium by increasing the endometrial thickness and improving ovarian function. This was especially noticeable in patients who had previously received total body irradiation.
Luteal Phase · Corpus Luteum Function
Fanchin R et al., 2001 · Semin Reprod Med
Human chorionic gonadotropin (hCG) is widely used as a surrogate to luteinizing hormone (LH) to trigger ovulation in controlled ovarian hyperstimulation (COH). Yet this molecule may exert direct effects on the endometrium. These effects, not mediated by ovarian hormones, are probably a consequence of stimulation of endometrial hCG/LH receptors. Because the half-life of hCG differs markedly from that of LH, possible pharmacological effects of hCG on the endometrium could alter endometrial receptivity in COH. Arguments supporting a clinical action of gonadotropins, and hCG in particular, on the endometrium abound. Notably, evidence has been reported of decidualization of stromal cells of the human endometrium in vitro as a result of exposure to gonadotropins, including hCG. The present article discusses, from a clinical standpoint, the main basis supporting the hypothesis that hCG administration as commonly used in infertility treatments may exert direct effects in vivo on endometrial histology and partake in endometrial transformations of the luteal phase. Preliminary results suggest that endometrial effects of hCG exist in vivo and should be taken into account when assessing the endometrial effects of hormones.
Luteal Phase · Progesterone Support
Fanchin R et al., 2001 · Fertil Steril
To investigate whether uterine contractility at the time of embryo transfer (ET) can be reduced by early onset of luteal support with progesterone administered vaginally. Prospective analysis. Assisted reproduction unit. PATIENT(S): Eighty-four women undergoing 84 GnRH-a and FSH/hCG cycles for IVF-ET were studied. INTERVENTION(S): Vaginal progesterone was randomly started on the day of oocyte retrieval (group A, n = 43) or on the evening of ET (group B, n = 41). On the day of hCG administration and just before ET, 2-minute sagittal uterine scans were obtained by ultrasound and digitized with an image analysis system for assessing uterine contraction frequency. MAIN OUTCOME MEASURE(S): Uterine contraction frequency. RESULT(S): Whereas uterine contraction frequency was similar in both groups on the day of hCG (4.6 +/- 0.3 and 4.5 +/- 0.3 contractions per minute, respectively), only women in group A showed decreased uterine contraction frequency on the day of ET (2.8 +/- 0.2 vs. 4.2 +/- 0.3 contractions per minute). CONCLUSION(S): Vaginal progesterone administration starting on the day of oocyte retrieval induced a decrease in uterine contraction frequency on the day of ET as compared with preovulatory values. Uterine relaxation before ET is likely to improve IVF-ET outcome by avoiding the displacement of embryos from the uterine cavity.
Pregnancy Complications · Intrauterine Infection
Baud O et al., 1999 · Br J Obstet Gynaecol
To test the association between cytokine levels in the amniotic fluid and (i) the vascular invasion phase of intrauterine infection, (ii) the occurrence of periventricular leukomalacia; to assess the correlation between C-reactive protein levels, a recognised biological marker of inflammation in maternal serum and cytokine levels in the amniotic fluid. Prospective clinical study. Fetal medicine unit and neonatal intensive care unit, Antoine Beclere Hospital, Clamart, France. Thirty-one pregnancies complicated by chorioamnionitis leading to birth before 32 weeks of gestation. Interleukin 1-beta, Interleukin 6 and TNF-alpha prospectively measured in the amniotic fluid. Histological examination of the placenta. Ultrasound examination and magnetic resonance imaging of the brains of the newborn infants performed within the first week of life. The occurrence of periventricular leukomalacia was assessed by transfontanellar ultrasound and magnetic resonance imaging. There was a significant positive correlation between the occurrence of histological chorioamnionitis, vascular extension of infection of the membranes, maternal inflammatory syndrome and neonatal sepsis. A strong association was found between maternal serum C-reactive protein concentrations and cytokine levels in the amniotic fluid. Interleukin-1beta was the best predictor of vascular extension of chorioamnionitis, and TNF-alpha was the best predictor of the development of severe early neonatal infection. There was no association between the amniotic fluid levels of cytokines and the development of periventricular leukomalacia. These data suggest that IL-1beta, IL-6 and TNF-alpha are produced in relation to intrauterine inflammation and infection, but cannot be directly implicated in the development of fetal cerebral white matter lesions.
