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Endometrial glandular epithelium

Jinhai Gou, Tingwenyi Hu, Lin Li, Luqi Xue, Xia Zhao, Tao Yi, Zhengyu Li
In a previous study we found the expression of epithelial-mesenchymal transition (EMT) biomarkers, including E-cadherin and N-cadherin, was significantly altered in uterine endometrium during embryo implantation via regulation by microRNA (miRNA)-429 and protocadherin-8 (Pcdh8). As a natural continuation of the previous study, the aim of the present study was to explore the role of EMT during embryo implantation and the potential activity of twist basic helix-loop-helix transcription factor 2 (Twist2) in regulating embryo implantation...
February 20, 2019: Reproduction, Fertility, and Development
Teresa Beyer, B Elisabeth Rink, Dragos Scarlet, Ingrid Walter, Steffen Kunert, Christine Aurich
In the horse, it is still unclear if and to what extent low progestin concentration contributes to early conceptus loss. In the present study, we have investigated if reduced or elevated progestin concentration in the early luteal phase influences endometrial function and conceptus development. We hypothesized that reduced progestin concentration via delayed downregulation of endometrial progesterone receptors (PR) influences endometrial function in healthy fertile mares while progestin substitution does not...
November 19, 2018: Theriogenology
Leszek Teresiński, Olimpia Sipak, Aleksandra Rył, Marek Masiuk, Iwona Rotter, Weronika Ratajczak, Malwina Łazowska, Maria Słomczyńska, Mariola Marchlewicz, Beata Karakiewicz, Maria Laszczyńska
INTRODUCTION: The morphology of the endometrium constantly changes in the reproductive period, depending on the levels of ovarian steroid hormones, and undergoes atrophic changes during menopause as a result of their insufficiency. The purpose of this study was to analyze morphological and morphometric changes in the mucous and muscle layers of the uterine wall in postmenopausal women, and to assess localization and number of cells showing the expression of steroid hormone receptors, namely estrogen receptor α (ER-α), progesterone receptor (PR), and androgen receptor (AR) in glandular epithelial cells and smooth muscle cells in particular groups of women...
November 14, 2018: Histology and Histopathology
Malgorzata Grzesiak, Ewa Waszkiewicz, Magdalena Wojtas, Kinga Kowalik, Anita Franczak
Vitamin D3 acting via its nuclear receptor (VDR) was shown to target many reproductive tissues and regulate their function. Nevertheless, little is known about the role of vitamin D3 and VDR in the uterus. We hypothesized that VDR expression profile varies in the porcine uterus throughout the course of the estrous cycle, and 1,25(OH)2 D3 influences uterine steroidogenic activity. The aim of this study was to investigate VDR mRNA expression, VDR protein abundance and immunolocalization in the porcine endometrium and myometrium harvested on Days 2-5, 12-13, 15-16 and 18-20 of the estrous cycle...
October 30, 2018: Theriogenology
James Tudor, Todd R Williams, Daniel T Myers, Beena Umar
Endosalpingiosis rarely affects the appendix but can be mistaken for acute appendicitis or appendiceal tumors. The medical literature regarding appendiceal endosalpingiosis is sparse; consisting of only four case reports which are primarily focused on the histopathology but provide little radiologic correlation. Endosalpingiosis is a rare condition characterized by the presence of benign fallopian tubal-like glandular epithelium derived from Mullerian ducts, usually affecting the serosal surfaces of the pelvis and peritoneum...
October 26, 2018: Abdominal Radiology
G C Camozzato, M N Martinez, H B A Bastos, S Fiala-Rechsteiner, A Meikle, M I M Jobim, R M Gregory, R C Mattos
The aim of this study was to evaluate ultrastructural and histological changes in the endometrium on days 7, 10 and 13 post-ovulation in pregnant and cyclic mares. Mares were routinely examined by transrectal palpation and ultrasonographic examination of the reproductive tract until estrus was detected. In the first cycle, endometrial biopsies from 30 cyclic mares (Cyclic group) were collected on days 7, 10 and 13 post-ovulation. In the second cycle, the same mares were bred by a fertile stallion. At days 7, 10 and 13 post-ovulation intrauterine biopsies were collected...
January 1, 2019: Theriogenology
Iside Scaravaggi, Nicole Borel, Rebekka Romer, Isabel Imboden, Susanne E Ulbrich, Shuqin Zeng, Heinrich Bollwein, Stefan Bauersachs
Previous endometrial gene expression studies during the time of conceptus migration did not provide final conclusions on the mechanisms of maternal recognition of pregnancy (MRP) in the mare. This called for a cell type-specific endometrial gene expression analysis in response to embryo signals to improve the understanding of gene expression regulation in the context of MRP. Laser capture microdissection was used to collect luminal epithelium (LE), glandular epithelium and stroma from endometrial biopsies from Day 12 of pregnancy and Day 12 of the oestrous cycle...
September 26, 2018: Reproduction, Fertility, and Development
Marlise Guerrero Schimpf, María M Milesi, Enrique H Luque, Jorgelina Varayoud
In a previous work, we detected that postnatal exposure to a glyphosate-based herbicide (GBH) alters uterine development in prepubertal rats causing endometrial hyperplasia and increasing cell proliferation. Our goal was to determine whether exposure to low-dose of a GBH during postnatal development might enhance the sensitivity of the uterus to an estrogenic treatment. Female Wistar pups were subcutaneously injected with saline solution (control) or GBH using the reference dose (2 mg/kg/day, EPA) on postnatal days (PND) 1, 3, 5, and 7...
August 18, 2018: Journal of Endocrinology
Erin Williams Lopez, Zer Vue, Russell R Broaddus, Richard R Behringer, Andrew B Gladden
Disruption of endometrial gland formation or function can cause female infertility. Formation of endometrial glands via tubulogenesis of luminal epithelial cells requires the establishment and maintenance of cell polarity and cell adhesion. The FERM domain-containing protein Merlin coordinates epithelial cell polarity and cell adhesion and is critical for epithelial tissue function in the skin and kidney. We now demonstrate a requirement for Merlin in endometrial gland development. Conditional deletion of Merlin in the endometrium results in female infertility caused by the absence of gland formation...
October 15, 2018: Developmental Biology
A Annandale, R M Stroehle, M L Schulman, K P Sibeko-Matjila, G T Fosgate, J Handler, D C Vemming, S J Clift
Persistent breeding-induced endometritis (PBIE) or delayed uterine clearance (DUC) are major causes of mare subfertility. Oxytocin and its receptor are thought to play significant roles in the pathogenesis of DUC but the specific roles of oxytocin receptor (OR) distribution and gene expression remain undefined. In this study both OR distribution and gene expression in the endometrium, myometrium and cervix during both luteal and non-luteal phases in non-pregnant mares (n = 27) of differing age (young: 2-9 years, n = 17; old: > 10 years, n = 10) and endometrial biopsy score were described using immunohistochemistry (IHC) and quantitative reverse-transcription polymerase chain reaction (RT-qPCR), respectively...
October 15, 2018: Theriogenology
Christos Dragamestianos, Christina I Messini, Pantelis T Antonakis, Konstantina Zacharouli, Evanthia Kostopoulou, Antonis Makrigiannakis, Panagiotis Georgoulias, George Anifandis, Konstantinos Dafopoulos, Antonios Garas, Alexandros Daponte, Ioannis E Messinis
OBJECTIVES: To investigate the effect of metformin on endometrial receptivity in women with polycystic ovary syndrome (PCOS). METHODS: Twenty volunteer women with polycystic ovaries and oligomenorrhea were prospectively investigated. All women were treated with exogenous estradiol and progesterone to simulate a normal menstrual cycle (28-day duration) after GnRH-induced pituitary desensitization. Ten of the women received no other medication (group A, control), while the remaining 10 received metformin (group B, metformin)...
July 26, 2018: Gynecologic and Obstetric Investigation
Takahiro Nakajima, Fumihisa Chishima, Takehiro Nakao, Chuyu Hayashi, Akiko Kasuga, Kaori Shinya, Takuo Nakayama, Hiromitsu Azuma, Go Ichikawa, Atsushi Komatsu, Tatsuo Yamamoto, Kei Kawana
BACKGROUND/AIM: We demonstrated that AT1 and AT2 are expressed and both pathways balance the renin-angiotensin system in endometriosis. MAS1, a specific receptor of angiotensin (1-7), opposes AT1 pathway-associated tissue remodelling. It is not known whether MAS1 has an effect on the pathogenesis of endometriosis or not. MATERIALS AND METHODS: Ovarian endometriotic tissues (endo-Ov) and eutopic endometrial tissues (endo-Em) were obtained from 29 patients with endometrial cysts...
2018: Gynecologic and Obstetric Investigation
Sandro Sacchi, Paola Sena, Chiara Degli Esposti, Jessica Lui, Antonio La Marca
PURPOSE: Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) mediate intracellular functions by binding their specific protein G-coupled gonadotrophin receptor, respectively FSH receptor (FSHR) and LH/choriogonadotrophin receptor (LHCGR). Whereas the expression of FSHR and LHCGR in mammals was considered gonad-specific and cell-specific, studies identified gonadotrophin receptors in human female extragonadal reproductive tissues. This study aims to demonstrate that gonadotrophin receptors are expressed in endometrium and mediates intracellular functions...
September 2018: Journal of Assisted Reproduction and Genetics
Fangrong Wu, Xiaoyan Chen, Yingyu Liu, Bo Liang, Hui Xu, Tin Chiu Li, Chi Chiu Wang
BACKGROUND: It is postulated that women suffered from recurrent implantation failure (RIF) have different endometrial receptivity compared to those who experienced with idiopathic recurrent miscarriage (RM). In this study, expression of common endometrial markers Leukemia inhibitor factor (LIF), mucin 1 (MUC1) and integrin β3 were studied and compared. METHODS: Fourteen women with RIF, 25 with RM and 20 fertile controls were recruited for endometrial biopsy during implantation window on day LH +  7...
June 21, 2018: Reproductive Biology and Endocrinology: RB&E
N B Paramonova, E A Kogan, A V Kolotovkina, O V Burmenskaya
OBJECTIVE: To study endometrial receptivity in infertile women with external genital endometriosis (EGE). SUBJECTS AND METHODS: Clinical, morphological, immunohistochemical, and molecular genetic examinations of endometrial aspiration pipelle biopsy specimens obtained on days 22-24 of the menstrual cycle from 94 infertile women with endometriosis: 50 women with Stage I-II EGE and 44 women with ovarian endometrioid cysts (OEC). A control group consisted of 54 women with tubal peritoneal factor of infertility (TPFI) and a successful attempt at IVF...
2018: Arkhiv Patologii
Shuqin Zeng, Jochen Bick, Susanne E Ulbrich, Stefan Bauersachs
BACKGROUND: Along with trophoblast elongation (Days 10 to 12), estradiol is secreted in increasing amounts for recognition of pregnancy. Endometrial secretions driven by ovarian progesterone and conceptus signals are essential for conceptus growth and development. Results of transcriptome analyses of whole endometrial tissue samples in the pig indicated the need for cell type-specific endometrial gene expression analysis for a better understanding of transcriptome changes associated with establishment of pregnancy...
June 14, 2018: BMC Genomics
Michaël Noë, Ayse Ayhan, Tian-Li Wang, Ie-Ming Shih
The pathogenesis of endometriosis, a common benign but debilitating disease in women, remains elusive. The currently held stem cell theory posits that circulating progenitor/stem cells are deposited outside the uterus, where they differentiate into endometrial stroma and glandular tissue to establish endometriosis. Fundamental to testing this hypothesis is to elucidate the evolution of both tissue types. Here, we applied droplet digital PCR to analyze synonymous and missense somatic passenger mutations, which are neutral with respect to clonal selection, among six non-superficial endometriotic lesions...
July 2018: Journal of Pathology
Sandra Schöniger, Hilke Gräfe, Franziska Richter, Heinz-Adolf Schoon
The enzyme indoleamine 2,3-dioxygenase 1 (IDO1) acts immunomodulatory and restricts bacterial growth. In the uterus of women and mice, it likely contributes to tissue homeostasis and disease pathogenesis. Pregnancy failure in mares is often caused by endometritis and endometrosis. The pathogenesis of nonsuppurative endometritis and endometrosis is still uncertain. To the authors' knowledge, no information on IDO1 expression in the equine endometrium is published. Aim of this study was to examine the presence of IDO1 as transcripts and proteins in the healthy and diseased endometrium of 25 mares and to determine its cellular expression...
June 2018: Research in Veterinary Science
Peng Wang, San-Pin Wu, Kelsey E Brooks, Andrew M Kelleher, Jessica J Milano-Foster, Francesco J DeMayo, Thomas E Spencer
Forkhead box A2 (FOXA2) is a pioneer transcription factor involved in organ development, function, and cancer. In the uterus, FOXA2 is essential for pregnancy and expressed specifically in the glands of the endometrium. Loss of FOXA2 function occurs during development of endometrial cancer in humans. The current study describes the development of a mouse model for conditional expression of mouse FOXA2. Using a system consisting of a minigene located at the Rosa26 locus, we generated a CAG-S-mFOXA2 allele in embryonic stem cells and subsequently in mice; before activation, the minigene is silent because of a floxed stop cassette inserted between the promoter and the transgene...
April 1, 2018: Endocrinology
Harriet C Fitzgerald, Jemma Evans, Nicholas Johnson, Giuseppe Infusini, Andrew Webb, Luk J R Rombauts, Beverley J Vollenhoven, Lois A Salamonsen, Tracey A Edgell
The regenerative, proliferative phase of a woman's menstrual cycle is a critical period which lays the foundation for the subsequent, receptive secretory phase. Although endometrial glands and their secretions are essential for embryo implantation and survival, the proliferative phase, when these glands form, has been rarely examined. We hypothesized that alterations in the secreted proteome of the endometrium of idiopathic infertile women would reflect a disturbance in proliferative phase endometrial regeneration...
June 1, 2018: Biology of Reproduction
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