Comparison of two culture media on morphokinetics and ploidy status of sibling embryos.

To investigate the effects of culture media with different lactate concentrations on early embryonic development, data collected from our patients undergoing preimplantation genetic testing (PGT) were assessed using the EmbryoScope™ time-lapse culturing system. After intracytoplasmic sperm injection (ICSI), sibling oocytes were cultured in the same EmbryoScope (Vitrolife) slides including two different commercially available media. The patients with fewer than five mature oocytes were not included in the analyses. All embryos were hatched on day 3, and trophectoderm biopsies (n = 212) were performed accordingly. PGT for aneuploidy (PGT-A) on biopsied materials was carried out using next generation sequencing. Morphokinetic parameters, fertilization, irregular division, degeneration, blastulation, euploidy, and pregnancy rates of embryos cultured in LifeGlobal Global Total medium (LGGT) and Continuous Single Culture-NX Complete medium (CSCM-NXC) were compared. There were no differences observed in time to pronuclear fade, or in time spent as 2-cell (cc2) and 3-cell (s2), to 4-cell, 5-cell, morula and blastocyst stages (P > 0.05). Embryos reached the 2-cell (t2) and 3-cell (t3) stages significantly faster in LGGT (P < 0.05), whereas embryos grown in CSCM-NXC with lower lactate reached starting blastulation significantly sooner (P = 0.026). However, there were no statistical differences observed in fertilization, blastulation, degeneration, irregular division euploidy, and pregnancy rates between the two groups (P > 0.05). Even though pregnancy and fertilization rates did not indicate statistical differences, results are significant to provide better insight on potential roles of lactate in embryo development. These finding will advance the fundamental knowledge of human embryo development and assisted reproductive technologies.

Longitudinal Description of Gonadal Function in Sickle-cell Patients Treated With Hematopoietic Stem Cell Transplant Using Alkylator-based Conditioning Regimens.

OBJECTIVES: This study describes the hormone profiles for gonadal late effects after alkylator-based hematopoietic stem cell transplant (HSCT) regimens used for sickle-cell disease (SCD). METHODS: This is a retrospective chart review of subjects followed in the post-HSCT clinic for sickle-cell disease. Patient demographics, pubertal development, characteristics of pre-HSCT disease severity, treatment before HSCT, conditioning regimens, presence of graft versus host disease and follicle-stimulating hormone, anti-Müllerian hormone (AMH), luteinizing hormone and testosterone were abstracted from the medical record. RESULTS: Forty subjects (24 female individuals) with SCD were 9 (±4.3) years old at HSCT and 7.9 years (±5.6) from HSCT. At the time of transplant, 8% of female individuals and no male individuals were pubertal and 58% of female individuals and 38% of male individuals had been treated with hydroxyurea. Post-HSCT, all of the female individuals had diminished ovarian reserve on the basis of low AMH values and 10 of the pubertal female individuals (71%) had premature ovarian insufficiency defined as follicle-stimulating hormone >40 mIU/mL ×2. There was no ovarian recovery and AMH remained very low or undetectable up to 13 years post-HSCT. In male individuals, luteinizing hormone and testosterone levels were normal for age. CONCLUSIONS: Post-HSCT for SCD, all female individuals had diminished ovarian reserve and most female individuals had POI, whereas male individuals had normal testosterone hormone production.

Effects of Supraphysiologic Levels of Estradiol on Endometrial Decidualization, sFlt1, and HOXA10 Expression.

OBJECTIVE: Supraphysiologic estradiol (E2) levels associated with controlled ovarian hyperstimulation in high in vitro fertilization (IVF) responders may alter implantation and placentation and increase the risk of preeclampsia. Our hypothesis is that elevated E2 levels in vitro significantly alter endometrial decidualization, sFlt1, and HOXA10 expression. METHODS: Human endometrial stromal cells were treated with a decidualization cocktail of medroxyprogesterone, cyclic adenosine monophosphate, and 3 concentrations of E2 10 nM (standard), 100 nM (intermediate), or 1000 nM E2 (high). Effects on sFlt1, prolactin (PRL), insulin-like growth factor binding protein 1 (IGFBP-1), vascular endothelial growth factor (VEGF), and HOXA10 were studied. RESULTS: Prolactin, IGFBP-1, and VEGF significantly increased at all 3 E2 concentrations. While IGFBP-1 and VEGF did not change with increasing E2, PRL was less with high E2 (6.0 ng/mL ± 1.4 standard error of the mean) compared to standard (21.4 ± 3.2) and intermediate (19.8 ± 3.8). sFlt1 decrease was similar at all E2 concentrations. HOXA10 was lower at standard (10%) and intermediate (30%) as expected, but did not change with high E2. CONCLUSIONS: Supraphysiologic E2 levels associated with high IVF responders that exceed in vivo levels may impair in vitro endometrial decidualization. Although PRL did increase with high E2, the levels were, however, attenuated and 3.4-fold lower than standard and intermediate E2. sFlt1 was decreased under all 3 conditions with no differences between concentrations. Reduced HOXA10 was not observed with high E2. These findings suggest that elevated E2 levels in vitro may alter endometrial decidualization and subsequently affect implantation and placentation.

Impact of cancer treatment on risk of infertility and diminished ovarian reserve in women with polycystic ovary syndrome.

OBJECTIVE: To compare markers of fertility and ovarian reserve between cancer survivors and cancer-free women with and without polycystic ovary syndrome (PCOS). DESIGN: Furthering Understanding of Cancer, Health, and Survivorship in Adult (FUCHSIA) Women's Study-a population-based cohort study. SETTING: Not applicable. PATIENT(S): Female cancer survivors (n = 1,090) aged 22-45 years, diagnosed between ages 20 and 35 years, and at least 2 years after diagnosis; 369 participated in a clinic visit. Three hundred seventy-four reproductive-aged women without cancer also completed a clinic visit. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Infertility, time to first pregnancy after cancer diagnosis, and measures of ovarian reserve (antimüllerian hormone [AMH] and antral follicle count [AFC]). RESULTS: Seventy-eight cancer survivors (7.2%) reported a PCOS diagnosis, with 41 receiving gonadotoxic treatment. Survivors with PCOS exposed to gonadotoxic treatment (odds ratio [OR] 2.3, 95% confidence interval [CI] 1.2-4.5) and unexposed (OR 3.4, 95% CI 1.7-6.9) were more likely to report infertility than unexposed survivors without PCOS and were more likely to have fewer children than desired (exposed: OR 2.1, 95% CI 1.0-4.2; unexposed: OR 3.0, 95% CI 1.4-6.8). After adjusting for age, comparison women with PCOS had the highest markers of ovarian reserve (AMH: 2.43 ng/mL, 95% CI 1.22-4.82 ng/mL; AFC: 20.7, 95% CI 15.3-27.8), and cancer survivors without PCOS treated with gonadotoxic agents had the lowest levels (AMH: 0.19 ng/mL, 95% CI 0.14-0.26 ng/mL; AFC: 7.4, 95% CI 6.4-8.5). CONCLUSION(S): Despite having higher AMH and AFC on average after cancer treatment, cancer survivors with PCOS were less likely to meet their reproductive goals compared with survivors without PCOS.

Human endometrial stromal cell plasticity: Reversible sFlt1 expression negatively coincides with decidualization.

Preeclampsia (PE) is a major complication of pregnancy in which the placenta is known to have shallow implantation into the uterine decidua. Studies have implicated soluble fms-like tyrosine kinase-1 (sFlt1), a soluble vascular endothelial growth factor (VEGF) receptor protein, in the pathogenesis of PE. sFlt1 has the ability to bind to and neutralize the angiogenic functions of VEGF and placental growth factor (PlGF). The presence of sFlt1 and its action in the endometrium is yet to be determined. We hypothesize that endometrial stromal cells (ESC) at the maternal-fetal interface may play a role in sFlt-1 regulation during pregnancy. In this study, we seek to understand the dynamic regulation of sFlt1 production in primary human ESC as a result of hormone stimulation and withdrawal. To mimic a biphasic menstrual cycle, ESC were treated with cAMP to induce endometrial decidualization that occurs during the luteal secretory phase, followed by cAMP withdrawal reflecting the follicular proliferative phase. Here, we present data to show that (1) ESC produce detectable amounts of sFlt1, (2) sFlt1 expression is turned off during decidualization at both the protein and RNA level (3) ESC decidualization and resulting sFlt1 expression are reversible phenomenon, and (4) Decidualization markers prolactin (PRL) and VEGF expressions in ESC are negatively correlated with sFlt1. These findings may have important implications in diseases such as PE that involve abnormal decidualization, implantation and angiogenesis at the maternal-fetal interface.