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https://www.readbyqxmd.com/read/29155779/a-novel-use-of-three-dimensional-high-frequency-ultrasonography-for-early-pregnancy-characterization-in-the-mouse
#1
Mary C Peavey, Corey L Reynolds, Maria M Szwarc, William E Gibbons, Cecilia T Valdes, Francesco J DeMayo, John P Lydon
High-frequency ultrasonography (HFUS) is a common method to non-invasively monitor the real-time development of the human fetus in utero. The mouse is routinely used as an in vivo model to study embryo implantation and pregnancy progression. Unfortunately, such murine studies require pregnancy interruption to enable follow-up phenotypic analysis. To address this issue, we used three-dimensional (3-D) reconstruction of HFUS imaging data for early detection and characterization of murine embryo implantation sites and their individual developmental progression in utero...
October 24, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29137430/genome-wide-analysis-and-functional-prediction-of-long-non-coding-rnas-in-mouse-uterus-during-the-implantation-window
#2
Qi Wang, Nan Wang, Rui Cai, Fan Zhao, Yongjie Xiong, Xiao Li, Aihua Wang, Pengfei Lin, Yaping Jin
Establishment of the receptive uterus is a crucial step for embryo implantation. In this study, the expression profiles and characterization of long non-coding RNAs (lncRNAs) in pregnant mouse uteri on day 4, day 5 at implantation sites and inter-implantation sites were conducted using RNA-seq. A total of 7,764 putative lncRNA transcripts were identified, including 6,179 known lncRNA transcripts and 1,585 novel lncRNA transcripts. Bioinformatics analysis of the cis and trans lncRNA targets showed that the differentially expressed lncRNAs were mainly involved in tissue remodelling, immune response and metabolism-related processes, indicating that lncRNAs could be involved in the regulation of embryo implantation...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29133384/estrogen-and-high-fat-diet-induced-alterations-in-c57bl-6-mice-endometrial-transcriptome-profile
#3
Yali Cheng, Qiaoying Lv, Bingying Xie, Bingyi Yang, Weiwei Shan, Chengcheng Ning, Bing Li, Liying Xie, Chao Gu, Xuezhen Luo, Xiaojun Chen, Qin Zhu
Unopposed estrogen stimulation and insulin resistance are known to play important roles in endometrial cancer (EC), but the interaction between these two factors and how they contribute to endometrial lesions are not completely elucidated. To investigate the endometrial transcriptome profile and the associated molecular pathway alterations, we established an ovariectomized C57BL/6 mouse model treated with subcutaneous implantation of 17-β estradiol (E2) pellet and/or high-fat diet (HFD) for 12 weeks to mimic sustained estrogen stimulation and insulin resistance...
November 13, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29112458/review-detrimental-effects-of-alcohol-exposure-around-conception-putative-mechanisms
#4
Jacinta I Kalisch-Smith, Karen M Moritz
In western countries, alcohol consumption is widespread in women of reproductive age, and in binge quantities. These countries also continue to have high incidences of unplanned pregnancies, with women often reported to cease drinking after discovering their pregnancy. This suggests the early embryo may be highly exposed to the detrimental effects of alcohol during this periconceptional period. The periconception and pre-implantation windows which includes maturation of the oocyte, fertilisation and morphogenesis of the pre-implantation embryo, are particularly sensitive times of development...
November 7, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29109007/roles-of-dek-in-the-endometrium-of-mice-in-early-pregnancy
#5
Yang Yang, Mengyun Wu, Yanqing Geng, Xueqing Liu, Yuan Yang, Xuemei Chen, Yubin Ding, Junlin He, Yingxiong Wang, Liling Xie
Embryo implantation is a complex process requiring reciprocal interactions between implantation-competent blastocysts and receptive uteri. Accumulating evidence from Digital Protein Expression Profiling indicates that DEK protein expression at implantation sites (ISs) was much higher than that at inter-implantation sites (IISs). In this study, we investigated the expression of DEK in mouse uterus by immunohistochemistry (IHC), Western blotting. We explored its function during decidualization of uterine stromal cells by inhibiting the expression of DEK...
November 3, 2017: Gene
https://www.readbyqxmd.com/read/29108503/stress-during-development-of-experimental-endometriosis-influences-nerve-growth-and-disease-progression
#6
Marielly Cuevas, Myrella L Cruz, Antonio E Ramirez, Idhaliz Flores, Kenira J Thompson, Manuel Bayona, Michael W Vernon, Caroline B Appleyard
PURPOSE: We have previously shown that stress prior to induction worsens clinical presentation and inflammatory parameters in a rat model of endometriosis. This study was designed to examine whether stress during the development of endometriosis can affect the growth of endometriotic implants through nerve growth and immune alterations. METHODS: Endometriosis was surgically induced in female Sprague-Dawley rats by suturing uterine horn implants onto the small intestine mesentery...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29096585/increased-expression-of-ndrg3-in-mouse-uterus-during-embryo-implantation-and-in-mouse-endometrial-stromal-cells-during-in-vitro-decidualization
#7
Qian Yang, Xuan Zhang, Yan Shi, Ya-Ping He, Zhao-Gui Sun, Hui-Juan Shi, Jian Wang
Decidualization is an indispensable event in the embryo implantation process, but its underlying molecular mechanisms remain elusive. In this study, we showed that in mice, the uterine expression of N-myc downstream-regulated gene 3 (NDRG3), a member of the α/β hydrolase superfamily, was induced by estradiol and progesterone. During the embryo implantation process, uterine Ndrg3 expression was remarkably upregulated, and its expression level at implantation sites (IS) was significantly higher than that at inter-IS...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29096270/de-novo-synthesis-of-sphingolipids-is-essential-for-decidualization-in-mice
#8
Nai-Zheng Ding, Qian-Rong Qi, Xiao-Wei Gu, Ru-Juan Zuo, Jie Liu, Zeng-Ming Yang
Sphingolipids play multiple roles in membrane structure, signal transduction, stress responses, neural development and immune reaction. The rate of de novo synthesis pathway of sphingolipids is regulated by two key enzymes, serine palmitoyltransferase (SPT), and ketoreductase (Kds). Here, we find that the mRNA levels of three subunits of the SPT holoenzyme (Sptlc1, Sptlc2, and Ssspta) are significantly up-regulated in mouse uterine stromal cells during decidualization. The expression of Kds, which reduces 3-keto-dihydrosphingosine to dihydrosphingosine, is co-localized with Sptlc1 in mouse uteri during early pregnancy...
October 9, 2017: Theriogenology
https://www.readbyqxmd.com/read/29092905/estrogen-induces-egr1-to-fine-tune-its-actions-on-uterine-epithelium-by-controlling-pr-signaling-for-successful-embryo-implantation
#9
Hye-Ryun Kim, Yeon Sun Kim, Jung Ah Yoon, Seung Chel Yang, Mira Park, Dong-Won Seol, Sang Woo Lyu, Jin Hyun Jun, Hyunjung Jade Lim, Dong Ryul Lee, Haengseok Song
The harmonized actions of ovarian E2 and progesterone (P4) regulate the proliferation and differentiation of uterine cells in a spatiotemporal manner. Imbalances between these hormones often lead to infertility and gynecologic diseases. Whereas numerous factors that are involved in P4 signaling have been identified, few local factors that mediate E2 actions in the uterus have been revealed. Here, we demonstrate that estrogen induces the transcription factor, early growth response 1 (Egr1), to fine-tune its actions in uterine epithelial cells (ECs) that are responsible for uterine receptivity for embryo implantation...
November 1, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29066530/regulation-of-porcupine-dependent-wnt-signaling-is-essential-for-uterine-development-and-fertility
#10
Omar Farah, Steffen Biechele, Janet Rossant, Daniel Dufort
Six members of the Wnt family are expressed in the female reproductive tract. Their collective function ensures proper development of the uterus, preparing it for pregnancy during adulthood. Here we take advantage of the fact that Porcn, a prerequisite for all Wnt secretion, is located on the X chromosome to generate females that were mosaic for Porcn throughout the reproductive tract. Porcnflox/x females were mated with progesterone receptor (Pgr)-Cre males (PgrCre/+) to generate females that were heterozygous for Porcupine in all tissues of the female reproductive tract, which resulted in mosaicism due to random X-inactivation...
October 24, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29062782/the-impact-of-combined-oral-contraceptives-on-ocular-tissues-a-review-of-ocular-effects
#11
REVIEW
Marilita M Moschos, Eirini Nitoda
The aim of this manuscript is to review the action and adverse effects of combined oral contraceptives (COCs) on ocular tissues. The percentage of unwanted pregnancies and the subsequent abortions make contraception crucial worldwide. Over 100 million women around the world use common contraceptive methods, including intrauterine devices, combined estrogen and progestin oral contraceptives, as well as progestin only preparations (oral contraceptives, implants or injections). COCs are widely used for contraception, but they are also indicated in menorrhagia, endometriosis, acne and hirsutism, fibroid uterus and premenstrual syndrome...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29043704/accuracy-of-two-dimensional-transvaginal-sonography-and-office-hysteroscopy-for-detection-of-uterine-abnormalities-in-patients-with-repeated-implantation-failures-or-recurrent-pregnancy-loss
#12
Marzieh Shiva, Firouzeh Ahmadi, Arezoo Arabipoor, Mansoureh Oromiehchi, Mohammad Chehrazi
Background: We sought to compare diagnostic values of two-dimensional transvaginal sonography (2D TVS) and office hysteroscopy (OH) for evaluation of endometrial pathologies in cases with repeated implantation failure (RIF) or recurrent pregnancy loss (RPL). MATERIALS AND METHODS: This prospective study was performed at Royan Institute from December 2013 to January 2015. TVS was performed before hysteroscopy as part of the routine diagnostic work-up in 789 patients with RIF or RPL...
January 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29025102/effects-of-noncavity-distorting-fibroids-on-endometrial-gene-expression-and-function
#13
Lusine Aghajanova, Sahar Houshdaran, Juan C Irwin, Linda 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 noncavity-distorting intramural fibroids and compare them to control subjects with no uterine pathology throughout the menstrual cycle...
October 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29025060/adrenomedullin-improves-fertility-and-promotes-pinopodes-and-cell-junctions-in-the-peri-implantation-endometrium
#14
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 subfertility 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 pregnancy complications, and ultimately lead to better maternal and fetal outcomes...
September 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28982937/paracrine-and-endocrine-actions-of-interferon-tau-ifnt
#15
REVIEW
Thomas R Hansen, Leticia D P Sinedino, Thomas E Spencer
This review focuses on the paracrine and endocrine actions of interferon tau (IFNT) during pregnancy recognition and establishment in ruminants. Pregnancy recognition involves the suppression of the endometrial luteolytic mechanism by the conceptus to maintain progesterone production by the corpus luteum (CL). The paracrine antiluteolytic effects of conceptus-derived IFNT inhibit upregulation of oxytocin receptors in the endometrial epithelia of the uterus, thereby preventing the production of luteolytic prostaglandin F2 alpha (PGF2α) pulses...
November 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28969693/effects-of-melatonin-administration-on-embryo-implantation-and-offspring-growth-in-mice-under-different-schedules-of-photoperiodic-exposure
#16
Lu Zhang, Zhenzhen Zhang, Feng Wang, Xiuzhi Tian, Pengyun Ji, Guoshi Liu
BACKGROUND: Embryo implantation is crucial for animal reproduction. Unsuccessful embryo implantation leads to pregnancy failure, especially in human-assisted conception. Environmental factors have a profound impact on embryo implantation. Because people are being exposed to more light at night, the influence of long-term light exposure on embryo implantation should be explored. METHODS: The effects of long photoperiodic exposure and melatonin on embryo implantation and offspring growth were examined...
October 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28965972/estrogen-induced-transcription-factor-egr1-regulates-c-kit-transcription-in-the-mouse-uterus-to-maintain-uterine-receptivity-for-embryo-implantation
#17
Mira Park, Hye-Ryun Kim, Yeon Sun Kim, Seung Chel Yang, Jung Ah Yoon, Sang Woo Lyu, Hyunjung Jade Lim, Seok-Ho Hong, Haengseok Song
Early growth response 1 (Egr1) is a key transcription factor that mediates the action of estrogen (E2) to establish uterine receptivity for embryo implantation. However, few direct target genes of EGR1 have been identified in the uterus. Here, we demonstrated that E2 induced EGR1-regulated transcription of c-Kit, which plays a crucial role in cell fate decisions. Spatiotemporal expression of c-Kit followed that of EGR1 in uteri of ovariectomized mice at various time points after E2 treatment. E2 activated ERK1/2 and p38 to induce EGR1, which then activated c-Kit expression in the uterus...
September 28, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28941468/prospective-evaluation-of-uterine-receptivity-in-mice
#18
Hitomi Nakamura, Takayoshi Hosono, Keiichi Kumasawa, Tadashi Kimura
In current infertility treatments it is necessary to evaluate uterine receptivity in each menstrual cycle. During the implantation period, the uterus goes through many complex orchestrated changes, including changes to the glycocalyx. The changes to the glycocalyx are due to sialylation, sulfation and fucosylation. Can the measurement of in-vivo uterine pH and/or oxidation-reduction potential (ORP) determine the alterations of uterine endometrium for implantation and evaluate prospective uterine receptivity? In the present study we assessed in vivo uterine pH and ORP during the early stages of pregnancy in naïve mice, as well as in a murine model of implantation failure created by local and transient suppression of signal transducer and activator of transcription 3...
September 25, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28884736/-the-application-of-low-frequency-ultrasound-for-the-comprehensive-treatment-and-rehabilitation-of-the-patients-presenting-with-chronic-endometritis
#19
Yu V Kovaleva
The incidence of chronic endometritis remains rather high despite considerable progress in reproductive medicine including the advent of the new methods for assisted reproduction; the pregnancy rate after the treatment of this condition is still unacceptably low. It implies the necessity of the careful preparation of endometrium for the implantation of the embryo especially in women with a history of unsuccessful outcomes of the IVF treatment. It calls for the development of the efficient therapeutic modalities for the management of chronic endometritis and restoration of the normal reproductive function; their introduction into the therapeutic algorithm remains equally relevant...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/28868248/the-window-of-implantation-is-closed-by-estrogen-via-insulin-like-growth-factor-1-pathway
#20
Ryosuke Kobayashi, Jumpei Terakawa, Tsutomu Omatsu, Yupadee Hengjan, Tetsuya Mizutani, Yasushige Ohmori, Eiichi Hondo
BACKGROUND: The opening and closing of the implantation window is important for successful pregnancy in eutherians. The recent study demonstrated that the window of uterine receptivity was prepared by the sole action of progesterone in mice, but the mechanism to close the window remained to be elucidated. METHODS: The pregnant mice were ovariectomized on the evening on the third day of pregnancy with a single injection of medroxyprogesterone acetate to induce delayed implantation (DI)...
April 2017: Journal of Reproduction & Infertility
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