[Other actors in the oocyte and follicular growth: The role of microRNAs in the cumulus-oocyte dialog].

International audienceThe good folliculogenesis evolution is fundamental for the obtaining of a competent oocyte, able to lead to pregnancy, once fertilized. During the follicular development, the oocyte is in close contact with surrounding cumulus cells (CCs) to form a cumulus-oocyte complex. The bidirectional exchange between oocyte and contiguous CCs via gap junction communications and paracrine signaling is important for oocyte competence and CCs development. These reciprocal regulations are controlled by some key genes. Recently, it has been demonstrated that these genes are themselves regulated by short RNAs fragments (approximately 22 nucleotides), called microRNAs. The identification and the quantification in the CCs of the microRNAs regulating these genes could promote the development of non invasive tests in order to assess the oocyte quality and its ability to provide embryo with a high implantation potential. This approach could be decisive in the embryo selection to transfer and could avoid the risk of multiple pregnancies by the replacement of a single embryo

Oocyte recovery post human follicular fluid centrifugation in modified natural cycle and achieving embryo

This case reports a successful live birth by intracytoplasmic sperm injection (ICSI) following human follicular fluid (HFF) centrifugation for oocyte retrieval in the modified natural cycle of a poor responder patient. A 37-year-old patient presenting with a severe ovarian defect underwent a modified natural cycle with HFF centrifugation prior to ICSI. As there was only one oocyte under direct binocular observation, HFF was centrifuged and a second oocyte was collected. ICSI was performed on both oocytes. Embryo quality and outcome were not compromised by HFF centrifugation. A live birth was achieved in April 2008. In a modified natural cycle, HFF centrifugation avoided loss of oocytes, optimized the IVF treatment, and achieved the development of two embryos

Endometriosis and in vitro fertilisation: a review

This review aims to evaluate whether severe endometriosis has an impact on the outcome of in vitro fertilisation (IVF), whether IVF is associated with specific complications in this context, whether a specific ovarian stimulation protocol is most appropriate, whether the endometrial condition progresses following ovarian stimulation, and whether endometrial cysts pose a specific problem for IVF. In patients with severe endometriosis, IVF represents an effective treatment option for infertility, as a complement to surgery. The prognostic parameters of IVF are identical to those of other patients. However, the risks related to the severity of endometriosis, particularly the risk of ovarian deficiency, need to be considered. Because of this issue, to which endometriosis-related pain often adds, IVF treatment should be initiated as early as possible, using appropriate protocols and after having fully informed the patient about the specific oocytes retrieval-related risks

Age-associated discrepancy between measured and calculated bioavailable testosterone in men

International audienc

Fertilité des patientes présentant une endométriose traitées par cœlioscopie et AMP

Objective To evaluate fertility outcomes after laparoscopic and ART management of endometriosis in an infertile population. Patients and methods Retrospective analysis including 79 infertile patients treated by laparoscopic surgery. Fertility was studied in relation to pregnancy\u27s mode (spontaneous or ART) and to endometriosis stages (rAFS). Results After laparoscopy, 8.9% of patients had a spontaneous pregnancy. IIU led to a cumulative rate of pregnant women of 21.5%. Then after laparoscopy, IIU and IVF, 68.4% of patients were pregnant. The average delay was 460 days between laparoscopy and spontaneous pregnancy, 271 days between surgery and IIU pregnancy and 600 days between surgery and IVF pregnancy. Among women with stages I-II endometriosis (62 cases), 11.3% patients obtained a spontaneous pregnancy, the cumulative rate of pregnant women after laparoscopy and IIU was 25,8%. After laparoscopy, IIU and IVF, 66.1% of patients were pregnant. The average post-surgical time to spontaneous pregnancy was 460 days. The average delay between surgery and IIU pregnancy was 279 days and 589 days between surgery and IVF pregnancy. In case of stages III-IV (17 patients), 76.4% of pregnancies were obtained. No spontaneous pregnancy was observed. 94.1% of patients were treated with IVF, leading to a global rate of pregnancy of 70.5%. The average delay between surgery and IVF pregnancy was 563 days. Conclusions With a combination of surgery and ART, two-third of patients were pregnant with an average time between surgery and pregnancy of less than two years. This combination (surgery and ART) increases the chances of becoming pregnant. At the moment, the delay between surgery and ART needs to be established

Rupture of membranes in case of internal podalic version: a risk for cesarean section on the second twin

Objectives To evaluate if internal version with ruptured membranes is a risk factor of cesarean section for the second twin. Patients and methods Two hundred and fifty-nine twins vaginal deliveries after 33 weeks of gestation from 1997 to 2009 in a level 3 maternity. A retrospective case-control study comparing two groups: cases of cesarean section on second twin and five twins vaginal deliveries following the case. Active management of the second twin delivery was performed with a short intertwin delivery. Results Eleven cesarean sections on the second twin were performed (4.2%). The main indication was failure of internal version. The risk of cesarean section was significantly greater when the internal version was performed with ruptured membranes (OR: 25.4 IC 95% [2.3-275.7] P \u3c 0.003) and when intertwin time delivery interval was increased (8.1 ± 5.1 vs 16.7 ± 6.3, P \u3c 0.001). Discussion and conclusion The rupture of amniotic membranes before or during the internal podalic version is associated with a risk of failure and cesarean for the second twin. We recommend to perform the internal podalic version with unruptured membranes according to the French recommendations

Do female translocations influence the ovarian response pattern to controlled ovarian stimulation in preimplantation genetic diagnosis?

BACKGROUND Ovarian response in female translocation carriers is not well understood. We aimed to evaluate the impact of chromosomal autosomal balanced translocations on the ovarian response to controlled ovarian stimulation (COS) in female carriers undergoing IVF and PGD. METHODS In a retrospective study, we included all female translocation carriers who underwent PGD at our centre. We compared these patients to female patients from couples with male translocation carriers who underwent PGD. RESULTS Results from 79 cycles of PGD from 33 female translocation carriers were compared with 116 cycles from 55 male translocation carriers. No difference was observed for patient characteristics: female age, anti-Müllerian hormone or antral follicle count. No difference in COS parameters was observed for the total dose of recombinant FSH, the number of retrieved oocytes and embryos on Day 3, for unaffected and transferred embryos. For the two groups, pregnancy rate was similar per cycle (12.7 versus 20.7%, P = 0.208). Multivariate analysis demonstrated that female translocation carriers had a significantly higher estradiol level on the day of hCG administration (+540 pg/ml, P = 0.05). CONCLUSIONS This paper is the largest to report ovarian response of female translocation carriers. This study showed that the ovarian response to COS was not impaired by balanced translocation status, suggesting that female chromosomal structural abnormalities did not influence the results of COS in PGD. Thus, female carriers of balanced translocations could be considered normal responders and standard doses of gonadotrophins used for ovarian stimulation

Myotonic dystrophy type 1 and PGD: ovarian stimulation response and correlation analysis between ovarian reserve and genotype

This study aimed at evaluating parameters and results of ovarian stimulation for myotonic dystrophy type 1 (DM1) female patients undergoing preimplantation genetic diagnosis (PGD) and to assess an eventual association between genotype and ovarian reserve. A retrospective study involved all 17 DM1 patients treated in the study centre\u27s PGD programme. The control group consisted of 22 patients treated for X-linked disorders in the same period. Comparative analysis of ovarian stimulation parameters and results was performed with bivariate and multivariate analysis. Then, among DM1 patients, a correlation between genotype (number of CTG repeats) and ovarian reserve, assessed by antral follicle count, was investigated. Comparative study showed no difference concerning the number of oocytes, embryos and pregnancy rate between the two groups. Multivariate analysis demonstrated that DM1 patients needed a significantly higher dose of gonadotrophins (+544 IU, P \u3c 0.001) than X-linked disorders patients and suggests a decreased ovarian sensitivity. However, with higher dose of gonadotrophins, PGD for DM1 offers good reproductive outcomes with a clinical pregnancy rate of 35.7%. Genotype was not correlated to ovarian reserve and appeared not to be helpful for the choice of the dose of gonadotrophins

[Comparison of frozen embryo transfer outcomes at blastocyst stage according to freezing method and type of endometrial preparation].

International audienceOBJECTIVE:This study intended to compare frozen embryo transfer (FET) outcomes at blastocyst stage according to freezing methods, slow freezing versus vitrification and according to the type of endometrial preparation.PATIENTS AND METHODS:A total of 172 FET at blastocyst stage (day 5 or 6) were included retrospectively from April, 2007 to December, 2012. The FET outcomes from slow freezing (group 1, n=86) were compared with those from vitrification (group 2, n=86). More particularly, the survival rate after thawing, as well as implantation and pregnancy rates (clinical and ongoing pregnancy rates) were compared respectively between these two groups, after matching on women's age at freezing day, embryo number and embryo development stage for transfer. Furthermore, for each freezing method, FET outcomes were compared according to the type of endometrial preparation, i.e. natural cycle (group N) versus stimulated cycle (group S).RESULTS:The survival rate as well as implantation and clinical pregnancy rates were significantly higher for FET after vitrification compared to FET after slow freezing (97% vs 85%, P<0.0001; 32% vs 20%, P=0.02; 43% vs 28%, P=0.04, respectively). By taking into account the number of transferred embryos for each group, the multiple pregnancy rate was three-fold higher in the group of FET after vitrification compared to the group of FET after slow freezing but not significantly (27.3% vs 8.3%, NS). However, FET outcomes were not affected significantly by the type of endometrial preparation whatever freezing methods. Nevertheless, the early spontaneous abortion (ESA) rate was lower in the case of embryos that were frozen by vitrification and transferred in natural cycle (group N2 vs group S2: 20% vs 47%, NS).DISCUSSION AND CONCLUSION:Our study confirms that the survival rate after thawing at blastocyst stage (day 5 or 6) is significantly improved after freezing by vitrification compared to slow freezing method. Likewise, implantation and clinical pregnancy rates are significantly increased in the case of FET at blastocyst stage when these embryos were frozen by vitrification. The results obtained by vitrification are very satisfactory but are also associated with an increased multiple pregnancy rate. Moreover, FET associated with natural or stimulated cycle does not modify significantly the outcomes of attempts, whatever the freezing method. However, the risk of ESA is reduced in the case of FET with natural cycle and after embryo vitrification

Lésions périnéales sév\u27res liées á une extraction foetale par spatules. Quels facteurs de risques ?

Objective To assess risk factors for anal sphincter injury during operative vaginal delivery using spatulas. Patients and methods A monocentric retrospective study of all assisted vaginal deliveries using Thierry and Teissier\u27s spatulas between January 1st, 2008 and December 31st, 2009 in a teaching level III maternity. We studied risk factors such as primiparity, gestational age, maternal age, previous perineal laceration, level and type of presentation, type of expulsion, unsuccessful extraction and successive use of tools, episiotomy, type of anaesthesia and birth weight. Results There were 346 perineal tears (60.5%); among them, 175 (31%) were type 1, 131 (23%) type 2, 35 (6.1%) type 3 and five (0.9%) type 4. There were 235 episiotomy (41.1%). There was no statistically significant difference between all the supposed risk factors and the severe perineal tears. Conclusion There are no relationship between third and fourth degree perineal lesions during spatula\u27s delivery and supposed risk factors of anal sphincter injury. Only statistical tendances between first vaginal delivery and anal sphincter injury and between occipitosacral delivery and anal sphincter injury were found. We need further randomized studies comparing assisted births using spatulas, forceps and vacuum extractors to better assess perineal tears risk factors