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Endometrial receptivity

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https://www.readbyqxmd.com/read/29040606/pinopode-score-around-the-time-of-implantation-is-predictive-of-successful-implantation-following-frozen-embryo-transfer-in-hormone-replacement-cycles
#1
X Y Jin, L J Zhao, D H Luo, L Liu, Y D Dai, X X Hu, Y Y Wang, X Lin, F Hong, T C Li, S Y Zhang
STUDY QUESTION: Is pinopode measurement of any prognostic value? SUMMARY ANSWER: Pinopode expression was significantly associated with the occurrence of pregnancy after frozen embryo transfer. WHAT IS KNOWN ALREADY: Pinopodes are expressed in the endometrium during the implantation period. Pinopode measurement has been proposed as a marker of endometrial receptivity. STUDY DESIGN, SIZE, DURATION: A prospective cohort study was conducted at the Center of Reproductive Medicine, Sir Run Run Shaw Hospital, between 2014 and 2016, recruiting 172 women with infertility and undergoing frozen embryo transfer following IVF treatment...
October 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29029020/the-endometrial-polarity-paradox-differential-regulation-of-polarity-within-secretory-phase-human-endometrium
#2
Sarah Whitby, Lois A Salamonsen, Jemma Evans
A major cause of infertility in normal and assisted reproduction cycles is failure of the endometrium to undergo appropriate changes during the secretory phase of the menstrual cycle as it acquires receptivity for an implanting blastocyst. Current dogma states that loss of epithelial polarity in the luminal epithelial cells, the point of first contact between maternal endometrium and blastocyst, may facilitate embryo implantation. Loss of polarity is likely an important change during the secretory phase to overcome mutual repulsion between otherwise polarised epithelial surfaces...
September 29, 2017: Endocrinology
https://www.readbyqxmd.com/read/29026527/recent-advances-in-in-vitro-fertilization
#3
REVIEW
Robert Casper, Jigal Haas, Tzu-Bou Hsieh, Rawad Bassil, Chaula Mehta
The field of assisted reproductive technology is rapidly progressing with many new advances in the last decade. The present review discusses methods to improve oocyte quality in older women and new stimulation protocols that may improve the number of mature oocytes retrieved during an in vitro fertilization cycle. We will discuss the present use of pre-implantation genetic screening (PGS) and finally focus on some new methods to determine endometrial receptivity. The focus of this review is to point out areas of technology that may be controversial or are new enough to require proper controlled studies for validation...
2017: F1000Research
https://www.readbyqxmd.com/read/29025102/effects-of-non-cavity-distorting-fibroids-on-endometrial-gene-expression-and-function
#4
L Aghajanova, S Houshdaran, J C Irwin, L C Giudice
Uterine fibroids are a common finding in infertility patients. Impaired implantation and decidualization have been proposed to contribute to compromised fertility. Data are limited on the endometrial transcriptome from subjects with uterine fibroids, as well as endometrial receptivity and decidualization potential of endometrial stromal fibroblasts (eSF) from women with fibroids. Our objective was to investigate the endometrial transcriptome of women with non-cavity distorting intramural fibroids and compare them to control subjects with no uterine pathology throughout the menstrual cycle...
August 30, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29025060/adrenomedullin-improves-fertility-and-promotes-pinopodes-and-cell-junctions-in-the-peri-implantation-endometrium
#5
Brooke C Matson, Stephanie L Pierce, Scott T Espenschied, Eric Holle, Imani H Sweatt, Eric S Davis, Robert Tarran, Steven L Young, Trudy A Kohout, Marcel van Duin, Kathleen M Caron
Implantation is a complex event demanding contributions from both embryo and endometrium. Despite advances in assisted reproduction, endometrial receptivity defects persist as a barrier to successful implantation in women with infertility. We previously demonstrated that maternal haploinsufficiency for the endocrine peptide adrenomedullin (AM) in mice confers a sub-fertility phenotype characterized by defective uterine receptivity and sparse epithelial pinopode coverage. The strong link between AM and implantation suggested the compelling hypothesis that administration of AM prior to implantation may improve fertility, protect against complications, and ultimately lead to better maternal and fetal outcomes...
August 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29023770/c-c-motif-chemokine-ligand-23-abolishes-er-stress-and-lps-induced-reduction-in-proliferation-of-bovine-endometrial-epithelial-cells
#6
Whasun Lim, Hyocheol Bae, Fuller W Bazer, Gwonhwa Song
To reduce embryonic losses in domestic animals for economic production of livestock meat and milk, chemokines and their receptors are required for proper implantation and placentation during early pregnancy. In this study, we investigated the effects of C-C-motif chemokine ligand 23 (CCL23) on the proliferation of bovine endometrial (BEND) epithelial cells. CCL23 treatment improved BEND cell proliferation by enhancing PCNA and cyclin D1 expression via activation of the PI3K/AKT and MAPK signaling pathways. In addition, a combination of CCL23 and tunicamycin reversed the ER stress-induced reduction in cell proliferation and the decreased expression of UPR-mediated signaling proteins, including IRE1α, PERK, and ATF6α...
October 12, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29018572/enhanced-hoxa10-sumoylation-inhibits-embryo-implantation-in-women-with-recurrent-implantation-failure
#7
Ruiwei Jiang, Lijun Ding, Jianjun Zhou, Chenyang Huang, Qun Zhang, Yue Jiang, Jingyu Liu, Qiang Yan, Xin Zhen, Jianxin Sun, Guijun Yan, Haixiang Sun
HOXA10 has emerged as an important molecular marker of endometrial receptivity. Recurrent implantation failure (RIF) after in vitro fertilization-embryo transplantation (IVF-ET) treatment is associated with impaired endometrial receptivity, but the exact underlying mechanism of this phenomenon remains elusive. Here we found that HOXA10 was modified by small ubiquitin like-modifier 1 (SUMO1) at the evolutionarily conserved lysine 164 residue. Sumoylation inhibited HOXA10 protein stability and transcriptional activity without affecting its subcellular localization...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/29017417/aberrant-expression-of-lncrna-hoxa11-as1-and-homeobox-a-hoxa9-hoxa10-hoxa11-and-hoxa13-genes-in-infertile-women-with-endometriosis
#8
Meimei Wang, Cuifang Hao, Xin Huang, Hongchu Bao, Qinglan Qu, Zhenteng Liu, Huangguan Dai, Shunzhi He, Wei Yan
This study aimed to study the expression of homeobox (HOX)A11-AS1 ( HOXA11 antisense RNA) long noncoding RNA (lncRNA) and the expression of homeobox A ( HOXA9, HOXA10, HOXA11, and HOXA13) genes in the eutopic (EU) and ectopic (EC) endometria of women with peritoneal endometriosis. A total of 30 women undergoing laparoscopic surgery for peritoneal endometriosis and 15 infertile women without endometriosis were enrolled in this study. Peritoneal EC tissue samples were obtained through surgery. The EU tissues were obtained by curettage...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28993437/thyroid-hormone-regulates-protease-expression-and-activation-of-notch-signaling-in-implantation
#9
Diletta Piccirilli, Enke Baldini, Micol Massimiani, Antonella Camaioni, Antonietta Salustri, Roberta Bernardini, Marco Centanni, Salvatore Ulisse, Constanzo Moretti, Luisa Campagnolo
A clinical association between thyroid dysfunction and pregnancy complications has been extensively reported, however the molecular mechanisms through which TH might regulate key-events of pregnancy have not been elucidated yet. In this respect, we performed in vivo studies in MMI- induced hypothyroid pregnant mice, evaluating the effect of hypothyroidism on the number of implantation sites, developing embryos/resorptions and pups per litter, at 4.5, 10.5, 18.5 days post coitum (dpc) and at birth. We also studied the expression of major molecules involved in implantation and placentation, such as the proteases ISPs, MMPs, TIMPs and Notch pathway related genes...
October 9, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28982293/the-effect-of-copper-on-endometrial-receptivity-and-induction-of-apoptosis-on-decidualized-human-endometrial-stromal-cells
#10
Jose P Carrascosa, David Cotán, Inmaculada Jurado, Manuel Oropesa-Ávila, Pascual Sánchez-Martín, Ricardo F Savaris, Justin Tan, Jose A Sánchez-Alcázar, Seang L Tan, José Antonio Horcajadas
Intrauterine devices (IUDs) have been widely used to prevent pregnancies with great efficacy during decades. It has been demonstrated that IUD alters the endometrial gene expression, but there is no scientific data about how copper, a metal commonly used in these devices, by itself, is able to influence the processes of endometrial receptivity and apoptosis in decidualized human endometrial stromal cells. Five endometrial samples were obtained from fertile women and processed by a standard protocol to obtain human endometrial stromal cells for in vitro studies...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28970135/pregnancy-outcomes-after-controlled-ovarian-hyperstimulation-in-women-with-endometriosis-associated-infertility-gnrh-agonist-versus-gnrh-antagonist
#11
Kamila Kolanska, Jonathan Cohen, Sofiane Bendifallah, Lise Selleret, Jean-Marie Antoine, Nathalie Chabbert-Buffet, Emile Darai, Emmanuelle Mathieu d'Argent
BACKGROUND OR OBJECTIVE: Endometriosis is common in women referred for infertility. In vitro fertilization provides good results but the choice of the best controlled ovarian hyperstimulation protocol remains a subject of debate. The objective of this retrospective study was to compare pregnancy outcomes in women with endometriosis-associated infertility after COH with a long agonist protocol or a six-week oral contraception-antagonist protocol. MATERIAL AND METHODS: Retrospective analysis of a prospective database identified 284 COH cycles - 165 with GnRH-agonist protocol (GnRH-agonist group) and 119 with GnRH-antagonist protocol (GnRH-antagonist group) - in 218 women, with endometriosis from January 2013 to October 2015...
September 29, 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28965550/in%C3%A2-vitro-fertilization-treatments-with-the-use-of-clomiphene-citrate-or-letrozole
#12
REVIEW
Jigal Haas, Robert F Casper
There has been increasing interest in combining the oral agents clomiphene citrate (CC) and letrozole with gonadotropins in IVF: for poor responders to reduce the amount of gonadotropins used, and in normal responders to reduce the incidence of ovarian hyperstimulation (OHSS). In normal responders, mild stimulation with the use of CC and gonadotropins was found to decrease the number of oocytes retrieved and result in good pregnancy rates, but in most studies the cumulative pregnancy rate was lower compared with conventional ovarian stimulation when frozen embryo transfers were considered...
October 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28965549/mild-stimulation-for-in%C3%A2-vitro-fertilization
#13
REVIEW
Geeta Nargund, Adrija Kumar Datta, Bart C J M Fauser
It has been proven that the use of high gonadotropin dose does not necessarily improve the final outcome of IVF. Mild ovarian stimulation is based on the principle of optimal utilization of competent oocytes/embryos and endometrial receptivity. There is growing evidence that the pregnancy or live birth rates with mild-stimulation protocols are comparable to those with conventional IVF; the cumulative pregnancy outcome has been shown to be no different, despite having fewer numbers of oocytes or embryos available with milder ovarian stimulation...
October 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28963923/pro-inflammatory-m1-th1-type-immune-network-and-increased-expression-of-tsg-6-in-the-eutopic-endometrium-from-women-with-endometriosis
#14
M Matteo, E Cicinelli, M Neri, R Carrubba, F A Carpagnano, F Romeo, G Scutiero, P Greco, C Garlanda, G Vendemiale, P E Levi Setti, G Serviddio
OBJECTIVE: The study aimed to explore the type 1 and type 2 cytokines expression in the endometrium from women affected by endometriosis compared to controls. The expression of TSG-6, a multifunctional protein involved in several inflammatory disease, was also evaluated. Study Design SETTING: Experimental clinical study. PATIENTS: 10 patients affected by endometriosis and 11 controls. INTERVENTIONS: Patients underwent to an ultrasound transvaginal examination and a diagnostic hysteroscopy in order to exclude any uterine abnormality...
September 7, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28963800/endometrial-receptivity-and-conception-outcome-among-women-with-light-menstrual-bleeding-of-unidentified-etiology
#15
Yueqing Gao, Xiangli Hong, Zhewei Wang, Ying Zhu
OBJECTIVE: To investigate endometrial receptivity (ER), conception outcome, and other factors among women with light menstrual bleeding of unidentified etiology. METHODS: A prospective study was undertaken at a center in China. Between January 1, 2011, and December 31, 2014, women meeting the inclusion criteria (aged 20-35 years, nulliparous, desire to conceive, follicle-stimulating hormone <10 IU on second or third day of cycle, and regular menstrual periods) were enrolled...
September 30, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28950833/alphavbeta3-integrin-expression-within-uterine-endometrium-in-unexplained-infertility-a-prospective-cohort-study
#16
Ahmed Elnaggar, Amr H Farag, Mohamed E Gaber, Mohamed Abdel Hafeez, Mohamed S Ali, Alaa M Atef
BACKGROUND: Implantation defect is one of these contributing factors for unexplained infertility. In the mid-luteal phase, when implantation is expected to happen, Integrins expression is remarkably increased. So, Integrins could potentially serve as markers for the frame of the window of implantation. αVβ3 integrin could have a role as a potential receptor for embryonic attachment. The aim of the current study is to investigate whether the women with unexplained infertility have a pattern of expression of endometrial αvβ3 integrin that could differ from those who have normal fertility or not...
September 26, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28947781/mir-449a-regulates-caprine-endometrial-stromal-cell-apoptosis-and-endometrial-receptivity
#17
Xiaopeng An, Xiaorui Liu, Lei Zhang, Junze Liu, Xinyan Zhao, Kaiwen Chen, Haidong Ma, Guang Li, Binyun Cao, Yuxuan Song
In this study, an RT-qPCR analysis showed that the expression levels of miR-449a in the pre-receptive endometrium were lower compared to the receptive endometrium, which is consistent with previous sequencing data (previous investigations). To detect the role of miR-449a in endometrial receptivity, we transfected caprine endometrial stromal cells (ESCs) cultured in vitro with miR-449a mimics. The results revealed that miR-449a decreased the mRNA and protein levels of LGR4 by targeting its 3'-untranslated region...
September 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28938896/effect-of-local-endometrial-injury-in-proliferative-vs-luteal-phase-on-ivf-outcomes-in-unselected-subfertile-women-undergoing-in-vitro-fertilization
#18
Wenjie Liu, Reshef Tal, He Chao, Minghui Liu, Ying Liu
BACKGROUND: Mechanical endometrial injury prior to IVF has been suggested as a means to increase implantation rates by improving endometrial receptivity. However, the effects of endometrial injury in proliferative vs. luteal phase have not been studied before. This study aimed to explore whether endometrial injury in the proliferative phase of the preceding cycle before in vitro fertilization/embryo transfer (IVF-ET) improves the clinical outcomes in unselected subfertile women compared with injury in luteal phase...
September 22, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28938408/pioneer-factors-foxa1-and-foxa2-assist-selective-glucocorticoid-receptor-signaling-in-human-endometrial-cells
#19
Shannon Whirledge, Edwina P Kisanga, Robert N Taylor, John A Cidlowski
Successful pregnancy relies on dynamic control of cell signaling in order to achieve uterine receptivity and the necessary biological changes required for endometrial decidualization, embryo implantation, and fetal development. Glucocorticoids are master regulators of intracellular signaling and can directly regulate embryo implantation and endometrial remodeling during murine pregnancy. In immortalized human uterine cells, we have shown that glucocorticoids and estradiol co-regulate thousands of genes. Recently, glucocorticoids and estradiol were shown to co-regulate the expression of Left-right determination factor 1 (LEFTY1), previously implicated in the regulation of decidualization...
August 29, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938400/il-1%C3%AE-inhibits-connexin-43-and-disrupts-decidualization-of-human-endometrial-stromal-cells-through-erk1-2-and-p38-map-kinase
#20
Jie Yu, Sarah L Berga, Wei Zou, D Grace Yook, Joshua C Pan, Aurora Arroyo Andrade, Lijuan Zhao, Neil Sidell, Indrani C Bagchi, Milan K Bagchi, Robert N Taylor
Inflammation can interfere with endometrial receptivity. We examined how IL-1β affects expression of the uterine gap junction protein, Cx43, which is known to be critical for embryonic implantation. We used an in vitro model of human endometrial stromal cells (ESC), Western blotting and a combination of validated, selective kinase inhibitors to evaluate five canonical IL-1β signaling pathways. Cx43 and two other markers of ESC differentiation (prolactin and VEGF) were inhibited predominantly via IL-1β-activated ERK1/2 and p38 MAP kinase cascades...
September 11, 2017: Endocrinology
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