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Embryo implantation failure

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https://www.readbyqxmd.com/read/28187504/extreme-spermatogenesis-failure-andrological-phenotype-and-intracytoplasmic-sperm-injection-outcomes
#1
P Plouvier, A-L Barbotin, F Boitrelle, D Dewailly, V Mitchell, J-M Rigot, V Lefebvre-Khalil, G Robin
Patients with very low sperm count through direct sperm examination can exhibit extreme oligozoospermia or cryptozoospermia (after centrifugation). The management of these patients is a real challenge for both clinicians and biologists. In this retrospective and comparative cohort study, we compared the andrological phenotype of patients with extreme alterations of spermatogenesis and assessed whether the origin of spermatozoa (testicular or ejaculate) had any influence on intracytoplasmic sperm injection (ICSI) outcomes...
February 10, 2017: Andrology
https://www.readbyqxmd.com/read/28105107/long-time-vs-short-time-insemination-of-sibling-eggs
#2
Jing Liu, Xiao Zhang, Yue Yang, Junliang Zhao, Dayong Hao, Jianrui Zhang, Yanli Liu, Wenbin Wu, Xingling Wang
This study aimed to evaluate the impact of a short insemination procedure on embryo development, assess the reliability of a fertilization check prior to the appearance of pronuclei and elucidate the role of rescue intracytoplasmic sperm injection (R-ICSI). Patients who had ≥9 eggs, were aged <38 years and had normal semen samples were included. The sibling eggs of each patient were divided into two groups; one half for conventional in vitro fertilization (IVF; insemination time, 20 h) and the other half for short insemination (insemination time, 5 h)...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101111/a-randomized-trial-to-evaluate-the-effect-of-local-endometrial-injury-on-the-clinical-pregnancy-rate-of-frozen-embryo-transfer-cycles-in-patients-with-repeated-implantation-failure
#3
Ensieh Shahrokh-Tehraninejad, Minoo Dashti, Batool Hossein-Rashidi, Elham Azimi-Nekoo, Fedyeh Haghollahi, Vahid Kalantari
Objective: Repeated implantation failure (RIF) is a condition in which the embryos implantation decreases in the endometrium. So, our aim was to evaluate the effect of local endometrial injury on embryo transfer results. Materials and methods: In this simple randomized clinical trial (RCT), a total of 120 patients were selected. The participants were less than 40 years old, and they are in their minimum two cycles of vitro fertilization (IVF). Patients were divided randomly into two groups of LEI (Local endometrial injury) and a control group (n = 60 in each group)...
September 2016: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/28081359/benzoic-acid-enhances-embryo-implantation-through-lif-dependent-expression-of-integrin-%C3%AE-v%C3%AE-3-and-%C3%AE-v%C3%AE-5
#4
Hee-Jung Choi, Tae-Wook Chung, Mi-Ju Park, Hyung Sik Kim, Sooseong You, Myeong Soo Lee, Bo Sun Joo, Kyu Sup Lee, Keuk-Jun Kim, Gabbine Wee, Choong-Yong Kim, Cheorl-Ho Kim, Ki-Tae Ha
The embryo implantation is crucial step for successful pregnancy. Diverse factors including adhesion molecules, growth factors, and cytokines are important to the embryo implantation through improving endometrial receptivity. Benzoic acid (BA), a component of various plants, has been shown to have anti-fungal and anti-oxidant effects. However, the effect of BA on the embryo implantation remains unknown. Here, we showed the contribution of BA for the enhancement of endometrial receptivity through the leukemia inhibitory factor (LIF)-dependent increase of integrin αV, β3, and β5 expression...
January 12, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28070710/the-accumulation-of-vitrified-oocytes-is-a-strategy-to-increase-the-number-of-euploid-available-blastocysts-for-transfer-after-preimplantation-genetic-testing
#5
Sandrine Chamayou, Maria Sicali, Carmelita Alecci, Carmen Ragolia, Annalisa Liprino, Daniela Nibali, Giorgia Storaci, Antonietta Cardea, Antonino Guglielmino
PURPOSE: In a preimplantation genetic diagnosis for aneuploidy (PGD-A) program, the more embryos available for biopsy, consequently increases the chances of obtaining euploid embryos to transfer. The aim was to increase the number of viable euploid blastocysts in patients undergoing PGD-A using fresh oocytes together with previously accumulated vitrified oocytes. METHODS: Sixty-nine patients with normal ovarian reserve underwent PGD-A for repeated implantation failure or recurrent pregnancy loss indication...
January 9, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28066833/the-role-of-g-csf-in-recurrent-implantation-failure-a-randomized-double-blind-placebo-control-trial
#6
Fatemeh Davari-Tanha, Ensieh Shahrokh Tehraninejad, Mohadese Ghazi, Zahra Shahraki
BACKGROUND: Recurrent implantation failure (RIF) is the absence of implantation after three consecutive In Vitro Fertilization (IVF) cycles with transferring at least four good quality embryos in a minimum of three fresh or frozen cycles in a woman under 40 years. The definition and management of RIF is under constant scrutiny. OBJECTIVE: To investigate the effects of Granulocyte colony stimulating factor (G-CSF) on RIF, pregnancy rate, abortion rate and implantation rates...
December 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28057937/a-simple-and-rapid-flow-cytometry-based-assay-to-identify-a-competent-embryo-prior-to-embryo-transfer
#7
Eva Pallinger, Zoltan Bognar, Jozsef Bodis, Timea Csabai, Nelli Farkas, Krisztina Godony, Akos Varnagy, Edit Buzas, Julia Szekeres-Bartho
Multiple pregnancy is a risk for prematurity and preterm birth. The goal of assisted reproduction is to achieve a single pregnancy, by transferring a single embryo. This requires improved methods to identify the competent embryo. Here, we describe such a test, based on flow cytometric determination of the nucleic acid (PI+) containing extracellular vesicle (EV) count in day 5 embryo culture media. 88 women undergoing IVF were included in the study. More than 1 embryos were transferred to most patients. In 58 women, the transfer resulted in clinical pregnancy, whereas in 30 women in implantation failure...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28054230/tumor-necrosis-factor-alpha-and-pregnancy-focus-on-biologics-an-updated-and-comprehensive-review
#8
REVIEW
Jaume Alijotas-Reig, Enrique Esteve-Valverde, Raquel Ferrer-Oliveras, Elisa Llurba, Josep Maria Gris
Tumor necrosis factor-α (TNF-α) is a central regulator of inflammation, and TNF-α antagonists may be effective in treating inflammatory disorders in which TNF-α plays a major pathogenic role. TNF-α has also been associated with inflammatory mechanisms related to implantation, placentation, and pregnancy outcome. TNF-α is secreted by immune cells and works by binding to TNFR1 and TNFR2 cell receptors. TNF-α is also related to JAK/STAT pathways, which opens up hypothetical new targets for modifying. The accurate balance between Th1 cytokines, mainly TNF-α, Th17, and Th2, particularly IL-10 is essential to achieve good obstetric outcomes...
January 4, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28050953/mir-142-3p-as-a-biomarker-of-blastocyst-implantation-failure-a-pilot-study
#9
Edson Borges, Amanda Souza Setti, Daniela P A F Braga, Murilo V Geraldo, Rita de Cássia S Figueira, Assumpto Iaconelli
OBJECTIVE: This study aims to find whether microRNAs (miRNAs) detected in the culture medium of embryos produced in vitro could be potential biomarkers of embryo implantation. METHODS: Culture media samples from 36 embryos, derived from patients undergoing intracytoplasmic sperm injection (ICSI) in a private university-affiliated IVF center, were collected between January/2015 and November/2015. Samples were collected on day three and embryo transfers were performed on day five and all embryos reached the blastocyst stage...
December 1, 2016: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28049832/forkhead-box-a2-foxa2-is-essential-for-uterine-function-and-fertility
#10
Andrew M Kelleher, Wang Peng, James K Pru, Cindy A Pru, Francesco J DeMayo, Thomas E Spencer
Establishment of pregnancy is a critical event, and failure of embryo implantation and stromal decidualization in the uterus contribute to significant numbers of pregnancy losses in women. Glands of the uterus are essential for establishment of pregnancy in mice and likely in humans. Forkhead box a2 (FOXA2) is a transcription factor expressed specifically in the glands of the uterus and is a critical regulator of postnatal uterine gland differentiation in mice. In this study, we conditionally deleted FOXA2 in the adult mouse uterus using the lactotransferrin Cre (Ltf-Cre) model and in the neonatal mouse uterus using the progesterone receptor Cre (Pgr-Cre) model...
February 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28003878/estimating-limits-for-natural-human-embryo-mortality
#11
Gavin E Jarvis
Natural human embryonic mortality is generally considered to be high. Values of 70% and higher are widely cited. However, it is difficult to determine accurately owing to an absence of direct data quantifying embryo loss between fertilisation and implantation. The best available data for quantifying pregnancy loss come from three published prospective studies (Wilcox, Zinaman and Wang) with daily cycle by cycle monitoring of human chorionic gonadotrophin (hCG) in women attempting to conceive. Declining conception rates cycle by cycle in these studies indicate that a proportion of the study participants were sub-fertile...
2016: F1000Research
https://www.readbyqxmd.com/read/27981253/efficacy-of-intrauterine-infusion-of-granulocyte-colony-stimulating-factor-on-patients-with-history-of-implantation-failure-a-randomized-control-trial
#12
Maryam Eftekhar, Sepideh Miraj, Maryam Farid Mojtahedi, Nosrat Neghab
BACKGROUND: Although pregnancy rate in in vitro fertilization-embryo transfer (IVF-ET) cycles has been increased over the preceding years, but the majority of IVF-ET cycles still fail. Granulocyte colony stimulating factor (GCSF) is a glycoprotein that stimulates cytokine growth factor and induces immune system which may improve pregnancy rate in women with history of implantation failure. OBJECTIVE: The aim of this study was to evaluate GCSF ability to improve pregnancy rate in women with history of implantation failure...
November 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/27939940/expression-of-er-%C3%AE-and-er-%C3%AE-during-peri-implantation-period-in-uterus-is-essential-for-implantation-and-decidualization-in-golden-hamster
#13
Randhir Kumar, Akhilesh Yadav, P L Pakrasi
AIMS: The role of estrogen in embryo implantation in golden hamster (Mesocricetus auratus) is still ambiguous. In order to clarify it, we investigated the spatial distribution and expression of estrogen receptors, ER-α and ER-β in the uterus of pregnant hamster during peri-implantation period and identified the effect of estrogen receptor antagonist ICI-182,780 on the embryo implantation. MAIN METHODS: We performed in vivo experiments on early pregnant hamsters involving treatment with ICI-182,780, an estrogen receptor antagonist...
February 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/27924832/impaired-receptivity-and-decidualization-in-dhea-induced-pcos-mice
#14
Shu-Yun Li, Zhuo Song, Min-Jie Song, Jia-Wen Qin, Meng-Long Zhao, Zeng-Ming Yang
Polycystic ovary syndrome (PCOS), a complex endocrine disorder, is a leading cause of female infertility. An obvious reason for infertility in PCOS women is anovulation. However, success rate with high quality embryos selected by assisted reproduction techniques in PCOS patients still remain low with a high rate of early clinical pregnancy loss, suggesting a problem in uterine receptivity. Using a dehydroepiandrosterone-induced mouse model of PCOS, some potential causes of decreased fertility in PCOS patients were explored...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921085/effects-of-autologous-platelet-rich-plasma-on-implantation-and-pregnancy-in-repeated-implantation-failure-a-pilot-study
#15
Leila Nazari, Saghar Salehpour, Sedighe Hoseini, Shahrzad Zadehmodarres, Ladan Ajori
BACKGROUND: Repeated implantation failure (RIF) is a major challenge in reproductive medicine and despite several methods that have been described for management, there is little consensus on the most effective one. OBJECTIVE: This study was conducted to evaluate the effectiveness of platelet-rich plasma in improvement of pregnancy rate in RIF patients. MATERIALS AND METHODS: Twenty women with a history of RIF who were candidates for frozen-thawed embryo transfer were recruited in this study...
October 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/27915038/intrauterine-administration-of-hcg-activated-autologous-human-peripheral-blood-mononuclear-cells-pbmc-promotes-live-birth-rates-in-frozen-thawed-embryo-transfer-cycles-of-patients-with-repeated-implantation-failure
#16
Saijiao Li, Jing Wang, Yan Cheng, Danni Zhou, Tailang Yin, Wangming Xu, Nan Yu, Jing Yang
Recurrent implantation failure refers to unsuccessful implantation after repeated transfers of morphologically good quality embryos into a normal uterus. Recently, accumulating evidence has suggested that local immune cells at the implantation site have actively contributed to embryo implantation. Our aim was to study the effects of intrauterine administration of hCG-activated autologous human PBMC on clinical pregnancy, implantation rates and live birth rate of patients who received frozen/thawed embryo transfer...
November 27, 2016: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/27881083/loss-of-maternal-annexin-a10-via-a-34-kb-deleted-type-copy-number-variation-is-associated-with-embryonic-mortality-in-japanese-black-cattle
#17
Shinji Sasaki, Takayuki Ibi, Takayuki Akiyama, Moriyuki Fukushima, Yoshikazu Sugimoto
BACKGROUND: Conception is a fundamental trait for successful cattle reproduction. However, conception rates in Japanese Black cattle have been gradually declining over the last two decades. Although conception failures are mainly caused by embryonic mortality, the role of maternal genetic factors in the process remains unknown. Copy number variation (CNV), defined as large-scale genomic structural variants, contributes to several genetic disorders. To identify CNV associated with embryonic mortality in Japanese Black cattle, we evaluated embryonic mortality as a categorical trait with a threshold model and conducted a genome-wide CNV association study for embryonic mortality using 791 animals...
November 24, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27862684/injury-to-the-endometrium-prior-to-the-frozen-thawed-embryo-transfer-cycle-improves-pregnancy-rates-in-patients-with-repeated-implantation-failure
#18
Emiko Kanazawa, Akira Nakashima, Koji Yonemoto, Misako Otsuka, Naomi Yoshioka, Takeshi Kuramoto, Hiroshi Mitao, Hiroto Imaishi, Kan Komai, Kimio Ushijima
AIM: This retrospective cohort study evaluated the effectiveness of injury to the endometrium prior to the frozen-thawed embryo transfer (FET) cycle in patients with repeated implantation failure (RIF) in our clinic. METHODS: Included in this study were 173 patients, aged ≤ 41 years, who failed to become pregnant after repeating fair and/or good embryo transfer more than twice between February 2012 and February 2015. The patients were divided into three groups: Group A (n = 38) underwent soft curettage to the endometrium twice, prior to the FET cycle; Group B (n = 45) underwent hysteroscopy prior to the FET cycle, with no significant factors, such as endometrial polyp; and Group C (n = 90) was the no-treatment group...
January 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27834288/maternal-t-regulatory-cell-depletion-impairs-embryo-implantation-which-can-be-corrected-with-adoptive-t-regulatory-cell-transfer
#19
Ryan J Heitmann, R Patrick Weitzel, Yanling Feng, James H Segars, John F Tisdale, Erin Foran Wolff
Maternal immune tolerance of fetal engraftment is critical for the establishment and maintenance of pregnancy, but the exact mechanisms permitting this semi-allograft in the maternal host are not completely understood. Further, failure of the embryo to implant in the uterus accounts for at least 30% of the best prognosis in vitro fertilization cycles when a perfect embryo is transferred to a normal uterus. We hypothesized that T regulatory cells (Tregs), defined by CD4(+)CD25hi surface expression and the FoxP3+ transcription factor, play an important role in the initiation of the earliest stages of pregnancy, specifically implantation of the embryo...
November 9, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27825168/activation-of-sgk1-in-endometrial-epithelial-cells-in-response-to-pi3k-akt-inhibition-impairs-embryo-implantation
#20
Madhuri S Salker, Jennifer H Steel, Zohreh Hosseinzadeh, Jaya Nautiyal, Zoe Webster, Yogesh Singh, Sara Brucker, Florian Lang, Jan J Brosens
BACKGROUND: Serum & Glucocorticoid Regulated Kinase 1 (SGK1) plays a fundamental role in ion and solute transport processes in epithelia. In the endometrium, down-regulation of SGK1 during the window of receptivity facilitates embryo implantation whereas expression of a constitutively active mutant in the murine uterus blocks implantation. METHODS/RESULTS: Here, we report that treatment of endometrial epithelial cells with specific inhibitors of the phosphoinositide 3-kinase (PI3K)/AKT activity pathway results in reciprocal activation of SGK1...
2016: Cellular Physiology and Biochemistry
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