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Uterus AND metabolism OR implantation

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https://www.readbyqxmd.com/read/29402916/transcriptomic-changes-in-the-pre-implantation-uterus-highlight-histotrophic-nutrition-of-the-developing-marsupial-embryo
#1
Camilla M Whittington, Denis O'Meally, Melanie K Laird, Katherine Belov, Michael B Thompson, Bronwyn M McAllan
Early pregnancy is a critical time for successful reproduction; up to half of human pregnancies fail before the development of the definitive chorioallantoic placenta. Unlike the situation in eutherian mammals, marsupial pregnancy is characterised by a long pre-implantation period prior to the development of the short-lived placenta, making them ideal models for study of the uterine environment promoting embryonic survival pre-implantation. Here we present a transcriptomic study of pre-implantation marsupial pregnancy, and identify differentially expressed genes in the Sminthopsis crassicaudata uterus involved in metabolism and biosynthesis, transport, immunity, tissue remodelling, and uterine receptivity...
February 5, 2018: Scientific Reports
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/28743542/the-endocannabinoid-system-expression-in-the-female-reproductive-tract-is-modulated-by-estrogen
#5
J Maia, M Almada, A Silva, G Correia-da-Silva, N Teixeira, S I Sá, B M Fonseca
The endocannabinoid system (ECS) is involved in several physiological events that resulted in a growing interest in its modulation. Moreover, the uterine levels of anandamide (AEA), the major endocannabinoid, must be tightly regulated to create proper embryo implantation conditions. However, there are no evidences about the regulation of AEA in uterus by estrogen. Thus, the aim of this study is to elucidate whether estradiol benzoate (EB) and tamoxifen (TAM) administration to ovariectomized (OVX) rats can induce changes in the expression of cannabinoid receptors and AEA-metabolic enzymes in uterus by evaluating gene transcription and protein levels by qPCR, Western blot and immunohistochemistry...
November 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28696810/mitochondrial-dna-variations-are-associated-with-recurrent-pregnancy-loss
#6
Ali Azadi, Dong Joo Seo, Hannaneh Jafari Sasansara, Michael Van Haute
Cases with three or more consecutive spontaneous abortions before the 20th week of gestation are termed as recurrent pregnancy loss (RPL). Problems in implantation of the foetus and any retarded growth of the foetus in the uterus can be correlated to RPL. Possible causes of RPL would include the genetic variations in the regulatory enzymes of the crucial metabolic pathways, clotting factors, hormones and hormone receptors. This defect of the mitochondrial respiratory chain is recognized as a major cause of human disease...
July 11, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28555957/diethylhexyl-phthalate-magnifies-deposition-of-14-c-bisphenol-a-in-reproductive-tissues-of-mice
#7
Evan D Borman, Nicholas Vecchi, Tyler Pollock, Denys deCatanzaro
Endocrine disrupting chemicals are found in diverse common products, including cosmetics, food packaging, thermal receipt paper and plastic containers. This exposes most people in developed countries through ingestion, skin absorption and inhalation. Two ubiquitous endocrine disrupting chemicals, bisphenol A (BPA) and diethylhexyl phthalate (DEHP) can interact in disrupting blastocyst implantation in inseminated females. We hypothesized that DEHP might increase the bioavailability of BPA in tissues by competing for metabolic enzymes...
May 29, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28336389/metformin-ameliorates-uterine-defects-in-a-rat-model-of-polycystic-ovary-syndrome
#8
Yuehui Zhang, Min Hu, Fanci Meng, Xiaoyan Sun, Hongfei Xu, Jiao Zhang, Peng Cui, Njomeza Morina, Xin Li, Wei Li, Xiao-Ke Wu, Mats Brännström, Ruijin Shao, Håkan Billig
Adult rats treated concomitantly with insulin and human chorionic gonadotropin exhibit endocrine, metabolic, and reproductive abnormalities that are very similar to those observed in polycystic ovary syndrome (PCOS) patients. In this study, we used this rat model to assess the effects of metformin on PCOS-related uterine dysfunction. In addition to reducing androgen levels, improving insulin sensitivity, and correcting the reproductive cycle, metformin treatment induced morphological changes in the PCOS-like uterus...
April 2017: EBioMedicine
https://www.readbyqxmd.com/read/27760751/phospholipid-profile-and-distribution-in-the-receptive-oviduct-and-uterus-during-early-diestrus-in-cattle
#9
Katia Roberta A Belaz, Alessandra Tata, Moana R França, Maressa I Santos da Silva, Pedro Henrique Vendramini, Anna Maria A P Fernandes, Fábio L D'Alexandri, Marcos N Eberlin, Mario Binelli
Phospholipid metabolism and signaling influences on early pregnancy events in cattle are unknown. This study aimed to characterize global phospholipid composition of oviduct and uterus during early diestrus in a model of contrasting embryo receptivity. Beef cows were treated to ovulate a larger (LF-LCL group, associated with greater receptivity) or smaller (SF-SCL group) follicle and, consequently, to present greater or smaller plasma concentrations of estradiol during proestrus-estrus, as well as progesterone during early diestrus...
December 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27758953/absorption-and-distribution-of-estradiol-from-male-seminal-emissions-during-mating
#10
Denys deCatanzaro, Tyler Pollock
Estradiol-17β (E2) plays critical roles in female maturation, sexual receptivity, ovulation and fertility. In many mammals, contact with males can similarly affect these female parameters, whereas male excretions contain significant quantities of E2 We administered radiolabeled estradiol ([(3)H]E2) to male mice in doses representing a small fraction of their endogenous E2 These males were paired with sexually receptive females, and radioactivity was traced into the females' systems. In Experiment 1, males were given [(3)H]E2 at 24 and 1 h before mating...
December 2016: Journal of Endocrinology
https://www.readbyqxmd.com/read/27638325/triclosan-elevates-estradiol-levels-in-serum-and-tissues-of-cycling-and-peri-implantation-female-mice
#11
Tyler Pollock, Lucas J Greville, Brandon Tang, Denys deCatanzaro
Triclosan, an antimicrobial agent added to personal care products, can modulate estrogenic actions. We investigated whether triclosan affects concentrations of exogenous and endogenous estradiol. Female mice were given injections of triclosan followed by 1μCi tritium-labeled estradiol. Mice given daily 2-mg triclosan doses (57.9mg/kg/dose) showed significantly elevated radioactivity in tissues and serum compared to controls. A single dose of 1 or 2mg triclosan increased radioactivity in the uterus in both cycling and peri-implantation females...
October 2016: Reproductive Toxicology
https://www.readbyqxmd.com/read/27348627/functional-expression-of-aryl-hydrocarbon-receptor-on-mast-cells-populating-human-endometriotic-tissues
#12
Laura Mariuzzi, Rossana Domenis, Maria Orsaria, Stefania Marzinotto, Ambrogio P Londero, Michela Bulfoni, Veronica Candotti, Andrea Zanello, Maurizio Ballico, Maria C Mimmi, Angelo Calcagno, Diego Marchesoni, Carla Di Loreto, Antonio P Beltrami, Daniela Cesselli, Giorgia Gri
Endometriosis is an inflammatory disease characterized by the presence of ectopic endometrial tissue outside the uterus. A diffuse infiltration of mast cells (MCs) is observed throughout endometriotic lesions, but little is known about how these cells contribute to the network of molecules that modulate the growth of ectopic endometrial implants and promote endometriosis-associated inflammation. The aryl hydrocarbon receptor (AhR), a transcription factor known to respond to environmental toxins and endogenous compounds, is present in MCs...
September 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/26987819/uterine-prx2-restrains-decidual-differentiation-through-inhibiting-lipolysis-in-mice
#13
Yufei Jiang, Shuangbo Kong, Bo He, Bingyan Wang, Haibin Wang, Jinhua Lu
Uterine decidualization, characterized as extensive stromal cell proliferation, differentiation and polyploidization, is a crucial event for successful pregnancy and is tightly regulated by many different molecules and pathways. Prx2, an evolutionarily conserved homeobox transcription factor expressed in both embryos and adults, plays an important role during mesenchymal cell differentiation. However, it remains unclear what the exact function of Prx2 is in the uterine stromal cells, one type of mesenchymal cells...
August 2016: Cell and Tissue Research
https://www.readbyqxmd.com/read/26776288/-pregnancy-associated-hormones-and-fetal-maternal-relations
#14
REVIEW
E Gailly-Fabre, V Kerlan, S Christin-Maitre
Pregnancy is an immunological paradox that implies that a semi-allogeneic fetus is not rejected by the maternal immune system, from implantation of the embryo to delivery. Progesterone (P4), estradiol (E2) and human chorionic gonadotropin (hCG), contribute to the transformation of immune cells in a transient tolerance state, necessary to the maintenance of pregnancy. The effects of pregnancy hormones depend probably of their maternal plasma level. hCG is dangerous at high concentrations because it can stimulate autoantibodies production, whereas in physiological concentrations, hCG, P4 and E2 upregulate immune response expanding regulatory T and B cells, allowing the fetus to grow within the maternal uterus in a protective environment...
October 2015: Annales D'endocrinologie
https://www.readbyqxmd.com/read/26450499/pregnancy-recognition-and-implantation-of-the-conceptus-in-the-mare
#15
REVIEW
Claudia Klein
Few, if any, biological processes are as diverse among domestic species as establishment of early pregnancy, in particular maternal recognition of pregnancy. Following fertilization and initial development in the mare oviduct, selective transport of the embryo through the uterotubal junction driven by embryo-derived PGE2 occurs. Upon arrival in the uterus, an acellular glycoprotein capsule is formed that covers the embryo, blastocyst, and conceptus (embryo and associated extraembryonic membranes) between the second and third weeks of pregnancy...
2015: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/26290006/maternal-n-carbamylglutamate-supplementation-during-early-pregnancy-enhances-embryonic-survival-and-development-through-modulation-of-the-endometrial-proteome-in-gilts
#16
Jinlong Zhu, Xiangfang Zeng, Qian Peng, Shenming Zeng, Haiyi Zhao, Hexiao Shen, Shiyan Qiao
BACKGROUND: Early pregnancy loss is a major concern in humans and animals. N-carbamylglutamate (NCG) has been found to enhance embryonic survival during early pregnancy in rats. However, little is known about the key factors in the endometrium involved in the improvement of embryonic implantation and development induced by maternal NCG supplementation. OBJECTIVES: Our objectives were to investigate whether NCG supplementation during early gestation enhanced embryonic survival and development in gilts and to uncover the related factors using the approach of endometrium proteome analysis with isobaric tags for relative and absolute quantification (iTRAQ)...
October 2015: Journal of Nutrition
https://www.readbyqxmd.com/read/25609213/amino-acid-metabolism-in-intestinal-bacteria-and-its-potential-implications-for-mammalian-reproduction
#17
REVIEW
Zhaolai Dai, Zhenlong Wu, Suqin Hang, Weiyun Zhu, Guoyao Wu
Reproduction is vital for producing offspring and preserving genetic resources. However, incidences of many reproductive disorders (e.g. miscarriage, intrauterine growth restriction, premature delivery and lower sperm quality) have either increased dramatically or remained at high rates over the last decades. Mounting evidence shows a strong correlation between enteral protein nutrition and reproduction. Besides serving as major nutrients in the diet, amino acids (AA) are signaling molecules in the regulation of diverse physiological processes, ranging from spermatogenesis to oocyte fertilization and to embryo implantation...
May 2015: Molecular Human Reproduction
https://www.readbyqxmd.com/read/25596750/local-uterine-ang-1-7-infusion-augments-the-expression-of-cannabinoid-receptors-and-differentially-alters-endocannabinoid-metabolizing-enzymes-in-the-decidualized-uterus-of-pseudopregnant-rats
#18
K Bridget Brosnihan, Victor M Pulgar, Patricia E Gallagher, Liomar A A Neves, Liliya M Yamaleyeva
BACKGROUND: Endocannabinoids (ECs) are important contributors to implantation and decidualization and are suppressed in early pregnancy. Elevated levels of anandamide (AEA), the endogenous ligand for the CB1 and CB2 receptors (R), interfere with receptivity of the blastocyst. Ang-(1-7) is down-regulated in the implantation site (IS) in normal pregnancy at day 7 of gestation. We determined the effects of intra-uterine angiotensin-(1-7) [Ang-(1-7)] (24 microg/kg/h) or vehicle given into the left uterine horn on the ECs in the decidualized uterus...
January 17, 2015: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/25528731/systems-genetics-view-of-endometriosis-a-common-complex-disorder
#19
REVIEW
Vladislav S Baranov, Tatyana E Ivaschenko, Thomas Liehr, Maria I Yarmolinskaya
Endometriosis is a condition in which cells derived from the endometrium grow outside the uterus, e.g. in the peritoneum (external genital endometriosis). As these cells are under the influence of female hormones, major symptoms of endometriosis are pain, especially during the cycle, and infertility. Numerous hypotheses for the formation of endometriosis can be found in the literature, but there is growing evidence of serious genetic contributions to endometriosis susceptibility. The involvement of genes, steroid hormone metabolism, immunological reactions, receptor formation, inflammation, proliferation, apoptosis, intercellular adhesion, cell invasion and angiogenesis as well as genes regulating the activity of aforementioned enzymes have been suggested...
February 2015: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/25438102/oestrogen-regulates-bone-resorption-and-cytokine-production-in-the-maxillae-of-female-mice
#20
Soraia Macari, Letícia F Duffles, Celso M Queiroz-Junior, Mila F M Madeira, George J Dias, Mauro M Teixeira, Raphael E Szawka, Tarcília A Silva
Oestrogen plays major role in bone metabolism/remodelling. Despite of well-established effect of oestrogen deficiency on long bones, it remains unclear whether alveolar bone is affected. We aimed to determine the effect of oestrogen-deficiency in the alveolar bone microarchitecture. C57BL6/J and Balb/c mice were ovariectomized and implanted with oil-(OVX) or 17β-estradiol (E2)-containing (OVX+E2) capsules. Ovary-intact mice were used as controls. The dose of E2 replacement was selected based on trophic effects on the uterus and femur bone loss...
February 2015: Archives of Oral Biology
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