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Endometrial receptivity

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https://www.readbyqxmd.com/read/29456564/role-of-granulocyte-colony-stimulating-factor-in-human-reproduction
#1
REVIEW
Maryam Eftekhar, Elham Naghshineh, Parisa Khani
As new research reveals, granulocyte colony-stimulating factor (G-CSF) plays an effective role in pregnancy success, considering that it not only affects the embryo implantation and ovarian function but also it promotes endometrial thickening and improves the pathophysiology of endometriosis, which all fundamentally lead to reducing pregnancy loss. In this review, we focus on the role of G-CSF in human reproduction. We summarized its role in ovulation, luteinized unruptured follicle syndrome, poor responders, improving repeated in vitro fertilization failure, endometrial receptivity and treatment of thin endometrium, and recurrent spontaneous abortion...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29452422/asynchronous-and-pathological-windows-of-implantation-two-causes-of-recurrent-implantation-failure
#2
P Sebastian-Leon, N Garrido, J Remohí, A Pellicer, P Diaz-Gimeno
STUDY QUESTION: Is endometrial recurrent implantation failure (RIF) only a matter of an asynchronous (displaced) window of implantation (WOI), or could it also be a pathological (disrupted) WOI? SUMMARY ANSWER: Our predictive results demonstrate that both displaced and disrupted WOIs exist and can present independently or together in the same RIF patient. WHAT IS KNOWN ALREADY: Since 2002, many gene expression signatures associated with endometrial receptivity and RIF have been described...
February 14, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29447367/endometrial-natural-killer-nk-cells-reveal-a-tissue-specific-receptor-repertoire
#3
D Feyaerts, T Kuret, B van Cranenbroek, S van der Zeeuw-Hingrez, O W H van der Heijden, A van der Meer, I Joosten, R G van der Molen
STUDY QUESTION: Is the natural killer (NK) cell receptor repertoire of endometrial NK (eNK) cells tissue-specific? SUMMARY ANSWER: The NK cell receptor (NKR) expression profile in pre-pregnancy endometrium appears to have a unique tissue-specific phenotype, different from that found in NK cells in peripheral blood, suggesting that these cells are finely tuned towards the reception of an allogeneic fetus. WHAT IS KNOWN ALREADY: NK cells are important for successful pregnancy...
February 13, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29447354/creb3-regulatory-factor-mtor-autophagy-regulates-goat-endometrial-function-during-early-pregnancy
#4
Diqi Yang, Tingting Jiang, Jianguo Liu, Beibei Zhang, Pengfei Lin, Huatao Chen, Dong Zhou, Keqiong Tang, Aihua Wang, Yaping Jin
In domestic ruminants, a receptive endometrium is crucial for successful pregnancy. Although many essential molecular modulators and pathways have been identified during early pregnancy, the precise mechanisms regulating goat endometrial function remains largely unknown. Here, we describe a novel regulator during early pregnancy, whereby hormones increased CREB3 Regulatory Factor (CREBRF) expression and act as a potential activator of autophagy in endometrial epithelial cells (EECs) via the mTOR pathway. Our results showed that knockdown of CREBRF via shCREBRF hampered EECs proliferation by S-phase cell cycle arrest and significantly inhibited endometrial function...
February 13, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29430155/does-perifollicular-vascularity-on-the-day-of-oocyte-retrieval-affect-pregnancy-outcome-in-an-in-vitro-fertilization-cycle
#5
Nikita Naredi, Santosh Kumar Singh, Rajesh Sharma
Background: The vascularization status of ovarian follicles affects reproductive competence of oocytes and in turn embryo quality by regulating its oxygen supply. Transvaginal power Doppler ultrasound can noninvasively map this vascularity of the ovarian follicles. Thus, we aimed to study the association of perifollicular vascularity and pregnancy outcome in women while on treatment for an in vitro fertilization cycle. Material and Methods: A prospective study on 200 participants evaluated the vascularity of 1008 follicles on the day of oocyte retrieval to outline a map depicting perfusion of each follicle...
October 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29425943/chlorinated-insecticides-toxaphene-and-endrin-affect-oxytocin-testosterone-oestradiol-and-prostaglandin-secretion-from-ovarian-and-uterine-cells-as-well-as-myometrial-contractions-in-cow-in%C3%A2-vitro
#6
Michael Hubert Wrobel, Jaroslaw Mlynarczuk
We examined the direct effects of toxaphene and endrin, chlorinated insecticides that are widespread in the environment, on myometrial contractions and on the secretion of hormones involved in regulating these contractions. Granulosa, luteal, endometrial and myometrial cells, and myometrial strips from non-pregnant cows were incubated with both insecticides at environmentally relevant doses. Toxaphene inhibited and endrin stimulated the secretion of testosterone and oestradiol from granulosa cells. Toxaphene also inhibited and endrin stimulated the expression of the mRNA encoding the precursor of oxytocin (OT), as well OT secretion in luteal cell cultures...
February 3, 2018: Chemosphere
https://www.readbyqxmd.com/read/29415736/uterine-foxl2-regulates-the-adherence-of-the-trophectoderm-cells-to-the-endometrial-epithelium
#7
Michal Elbaz, Ron Hadas, Louise M Bilezikjian, Eran Gershon
BACKGROUND: Forkhead Transcription Factor L2 (FOXL2) is a member of the forkhead family with important roles in reproduction. Recent studies showed that FOXL2 is expressed in human and bovine endometrium and that its levels fluctuate during pregnancy. In this study, we aimed at evaluating the expression and function of FOXL2 in embryo implantation. METHODS: Mouse uteri at different days of pregnancy were isolated and analyzed for the expression and localization of FOXL2...
February 7, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29398418/luteal-phase-progesterone-and-oestradiol-after-ovarian-stimulation-relation-to-response-and-prediction-of-pregnancy
#8
Jesper Friis Petersen, Anders Nyboe Andersen, Bjarke Mirner Klein, Lisbeth Helmgaard, Joan-Carles Arce
Research has focused on optimizing luteal phase support and endometrial receptivity in ovarian stimulation cycles. In this study, serial endocrine measurements were taken in 600 patients after a gonadotrophin-releasing hormone antagonist stimulation protocol. On the day of blastocyst transfer, serum progesterone and oestradiol were similar irrespective of a subsequent positive or negative pregnancy test (median 99 ng/ml versus 103 ng/ml for progesterone, respectively) or a subsequent live birth or pregnancy loss...
January 17, 2018: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29397924/dehydroepiandrosterone-enhances-decidualization-in-women-of-advanced-reproductive-age
#9
Douglas A Gibson, Ioannis Simitsidellis, Olympia Kelepouri, Hilary O D Critchley, Philippa T K Saunders
OBJECTIVE: To investigate the impact of the androgen precursor dehydroepiandrosterone (DHEA) on the decidualization of human endometrial stromal cells isolated from women of advanced reproductive age. DESIGN: In vitro study. SETTING: University research institute. PATIENT(S): Proliferative phase primary human endometrial stromal fibroblasts (hESFs) were isolated from women of advanced reproductive age (n = 16; mean age, 44...
February 1, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29394365/live-birth-rate-following-frozen-thawed-blastocyst-transfer-is-higher-with-blastocysts-expanded-on-day-5-than-on-day-6
#10
Lucile Ferreux, Mathilde Bourdon, Amira Sallem, Pietro Santulli, Virginie Barraud-Lange, Nathalie Le Foll, Chloé Maignien, Charles Chapron, Dominique de Ziegler, Jean-Philippe Wolf, Khaled Pocate-Cheriet
STUDY QUESTION: The aim of this study was to evaluate the live birth rate (LBR) after frozen-thawed Day 5 (D5) and Day 6 (D6) blastocyst transfers. SUMMARY ANSWER: LBR following frozen-thawed blastocyst transfer is significantly lower with D6 than with D5 blastocyst regardless of embryo quality. WHAT IS KNOWN ALREADY: During fresh embryo transfer cycles, pregnancy rates (PR) are significantly higher when transferring blastocysts expanded on D5 compared with slow developing blastocysts (D6)...
February 2, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29370409/does-the-endometrial-gene-expression-of-fertile-women-vary-within-and-between-cycles
#11
Gloria E Evans, Gregory T M Phillipson, Peter H Sykes, Les A McNoe, Cristin G Print, John J Evans
STUDY QUESTION: Does gene expression of putative endometrial implantation markers vary in expression between menstrual cycles? SUMMARY ANSWER: In fertile women the expression of certain genes exhibits a pattern of stable regulation.which is not affected even when sampled twice in one cycle. WHAT IS KNOWN ALREADY: Successful implantation occurs in a minority of IVF embryo transfers. In contrast to knowledge regarding the ovulatory process, there is a sparse understanding of endometrial genes critical to implantation...
January 23, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29369190/endometrial-thickness-as-a-predictor-of-the-reproductive-outcomes-in-fresh-and-frozen-embryo-transfer-cycles-a-retrospective-cohort-study-of-1512-ivf-cycles-with-morphologically-good-quality-blastocyst
#12
Tao Zhang, Zhou Li, Xinling Ren, Bo Huang, Guijin Zhu, Wei Yang, Lei Jin
To evaluate the relationship between endometrial thickness during fresh in vitro fertilization (IVF) cycles and the clinical outcomes of subsequent frozen embryo transfer (FET) cycles.FET cycles using at least one morphological good-quality blastocyst conducted between 2012 and 2013 at a university-based reproductive center were reviewed retrospectively. Endometrial ultrasonographic characteristics were recorded both on the oocyte retrieval day and on the day of progesterone supplementation in FET cycles. Clinical pregnancy rate, spontaneous abortion rate, and live birth rate were analyzed...
January 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29365037/an-update-on-the-progress-of-transcriptomic-profiles-of-human-endometrial-receptivity
#13
Xi Wang, Qi Yu
Despite advances in our understanding of fertility, implantation failure remains a significant problem for both spontaneous and assisted pregnancies. Most research efforts concerning the process of implantation are embryo-centric, with a dearth of studies on endometrial factors. Currently, there are no practical and effective diagnostic tools available to precisely predict endometrial receptivity. Transcriptomics, a field based on microarray technology, has a number of procedures for clinical applications, although the functional relevance of most identified genes remains unclear...
January 22, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29362381/gene-expression-of-human-endometrial-l-selectin-ligand-in-relation-to-the-phases-of-the-natural-menstrual-cycle
#14
Tsung-Hsuan Lai, Fung-Wei Chang, Jun-Jie Lin, Qing-Dong Ling
This study investigates peptide components of L-selectin ligand (LSL) and their gene expressions in human endometrium during the natural menstrual cycle. We recruited 41 endometrial samples from reproductive-aged women with leiomyoma and undergoing hysterectomy and 11 endometrial samples from menopausal women as controls. Immunohistochemistry revealed strong MECA-79 expression from the early through the mid-secretory phase and low expression in menopausal endometrium. Five peptide components of LSL were detected in reproductive and menopausal endometrium by one-step quantitative RT-PCR: podocalyxin, endomucin, nepmucin, GlyCAM-1, and CD34...
January 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29354932/-effects-of-the-combined-therapy-of-heat-sensitive-moxibustion-and-acupoint-injection-on-endometrial-receptivity-of-hypdrosalphinx-infertility-in-the-patients-after-hysteroscopy-and-laparoscopy
#15
Yanling Liu, Lizhen Pan, Ying Wang
OBJECTIVE: To explore the effects of the combined therapy of heat sensitive moxibustion and acupoint injection on endometrial receptivity of hypdrosalphinx infertility in the patients after hysteroscopy and laparoscopy on the base of routine post-operative anti-inflammation. METHODS: A total of 210 patients of hypdrosalphinx infertility after hysteroscopy and laparoscopy were divided into a combined therapy group, a heat sensitive moxibustion group and a control group, 70 cases in each one according to the random number table...
January 12, 2018: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29346447/pik3ca-is-required-for-mouse-uterine-gland-development-and-pregnancy
#16
Hye Jin Chang, Hee Sung Shin, Tae Hoon Kim, Jung-Yoon Yoo, Hanna E Teasley, Jean J Zhao, Un-Hwan Ha, Jae-Wook Jeong
The PI3K/AKT signaling pathway plays a critical role in the maintenance of equilibrium between cell survival and apoptosis. The Pik3ca gene is mutated in a range of human cancers. It has been found to be oncogenic, and mutations lead to constitutive activation of the PI3K/AKT pathway. The expression patterns of PIK3CA proteins in the uterus of mice during early pregnancy indicate that it may play a role in the regulation of glandular epithelial cells, which is required to support uterine receptivity. To further investigate the role of Pik3ca in uterine function, Pik3ca was conditionally ablated only in the PGR-positive cells (Pgrcre/+Pik3caf/f; Pik3cad/d)...
2018: PloS One
https://www.readbyqxmd.com/read/29335465/the-high-concentration-of-progesterone-is-harmful-for-endometrial-receptivity-and-decidualization
#17
Yu-Xiang Liang, Li Liu, Zhi-Yong Jin, Xiao-Huan Liang, Yong-Sheng Fu, Xiao-Wei Gu, Zeng-Ming Yang
Progesterone is required for the establishment and maintenance of mammalian pregnancy and widely used for conservative treatment of luteal phase deficiency in clinics. However, there are limited solid evidences available for the optimal timing and dose of progesterone therapy, especially for the possible adverse effects on implantation and decidualization when progesterone is administrated empirically. In our study, mouse models were used to examine effects of excess progesterone on embryo implantation and decidualization...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29334205/overexpression-of-endometrial-estrogen-receptor-alpha-in-the-window-of-implantation-in-women-with-unexplained-infertility
#18
Mehran Dorostghoal, Hamid-O-Allah Ghaffari, Farideh Marmazi, Narjes Keikhah
Background: Failure in the endometrial receptivity may account for a significant number of infertility cases including unexplained infertility in women. Reduction in the endometrial estrogen receptor-alpha (ER-α) expression during implantation may be a critical event that coincides with the expression of specific genes and the formation of a receptive endometrium. The aim of the present study was to assess the expression of ER-α in the mid-secretory phase in the endometrium of women with unexplained infertility...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29330027/selective-estrogen-receptor-modulator-ormeloxifene-suppresses-embryo-implantation-via-inducing-mir-140-and-targeting-insulin-like-growth-factor-1-receptor-in-rat-uterus
#19
Vijay K Sirohi, Kanchan Gupta, Rohit Kumar, Vinay Shukla, Anila Dwivedi
Ormeloxifene, the non-steroidal SERM contraceptive, inhibits endometrial receptivity and embryo implantation via countering nidatory estrogen. However, the molecular mechanism of ormeloxifene action responsible for its contraceptive efficacy still remains unclear. Herein, we aimed to identify the miRNAs modulated under the influence of ormeloxifene and to explore their role in endometrial receptivity and embryo implantation. By doing microRNA sequencing analysis, a total of 168 miRNAs were found to be differentially expressed in uterine tissue of ormeloxifene-treated rats, on day 5 (10:00 h) of pregnancy i...
January 9, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29327111/the-role-of-the-endometrial-receptivity-array-era-in-patients-who-have-failed-euploid-embryo-transfers
#20
J Tan, A Kan, J Hitkari, B Taylor, N Tallon, G Warraich, A Yuzpe, G Nakhuda
PURPOSE: Endometrial receptivity issues represent a potential source of implantation failure. The aim of this study was to document our experience with the endometrial receptivity array (ERA) among patients with a history of euploid blastocyst implantation failure. We investigated whether the contribution of the endometrial factor could be identified with the ERA test and if actionable results can lead to improved outcomes. METHODS: A retrospective review was performed for 88 patients who underwent ERA testing between 2014 and 2017...
January 11, 2018: Journal of Assisted Reproduction and Genetics
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