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Reproductive Biology and Endocrinology: RB&E

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https://www.readbyqxmd.com/read/27881125/enhanced-expression-of-the-stemness-related-factors-oct4-sox15-and-twist1-in-ectopic-endometrium-of-endometriosis-patients
#1
Katharina Proestling, Peter Birner, Sukirthini Balendran, Nadine Nirtl, Erika Marton, Gülen Yerlikaya, Lorenz Kuessel, Theresa Reischer, Rene Wenzl, Berthold Streubel, Heinrich Husslein
BACKGROUND: Current evidence suggests that endometrial-derived stem cells, spilled in the peritoneal cavity via retrograde menstruation, are key players in the establishment of endometriotic lesions. The aim of this study was to determine the presence and distribution of the stemness-related factors OCT4, SOX15, TWIST1 and DCAMLK1 in women with and without endometriosis. METHODS: Immunohistochemical analysis was used to determine stromal and epithelial expression of OCT4, SOX15, TWIST1 and DCAMLK1 in endometriosis patient (EP) endometrium (n = 69) and endometriotic tissue (n = 90) and in control endometrium (n = 50)...
November 24, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27842549/acth-induced-stress-in-weaned-sows-impairs-lh-receptor-expression-and-steroidogenesis-capacity-in-the-ovary
#2
H S Zhu, Z Qian, H L Liu, E D Bao
BACKGROUND: Stress has been proved to impair the porcine reproduction soundly. Endocrine disruption, which is closely related to the persistent follicles, is possibly one of the results of stress, although the mechanism is unclear. Since the expression of luteinizing hormone receptor (LHR) in ovarian follicular wall and concentrations of steroid hormone in follicular fluid are related to the development of persistent follicles, this study is designed to evaluate the effect of administered adrenocorticotrophic hormone (ACTH) to weaned pigs on their ovarian steroidogenesis capacity and LHR expression...
November 14, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27832793/cryopreservation-and-xenografting-of-human-ovarian-fragments-medulla-decreases-the-phosphatidylserine-translocation-rate
#3
Vladimir Isachenko, Plamen Todorov, Evgenia Isachenko, Gohar Rahimi, Bettina Hanstein, Mahmoud Salama, Peter Mallmann, Andrey Tchorbanov, Paul Hardiman, Natalie Getreu, Markus Merzenich
BACKGROUND: Phosphatidylserine is the phospholipid component which plays a key role in cell cycle signaling, specifically in regards to necrosis and apoptosis. When a cell affected by some negative factors, phosphatidylserine is no longer restricted to the intracellular side of membrane and can be translocated to the extracellular surface of the cell. Cryopreservation can induce translocation of phosphatidylserine in response to hypoxia, increasing intracellular Ca(2+), osmotic disruption of cellular membranes, generation of reactive oxygen species and lipid peroxidation...
November 10, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27829441/characterization-of-exosomal-release-in-bovine-endometrial-intercaruncular-stromal-cells
#4
Yong Qin Koh, Hassendrini N Peiris, Kanchan Vaswani, Sarah Reed, Gregory E Rice, Carlos Salomon, Murray D Mitchell
BACKGROUND: Cell-to-cell communication between the blastocyst and endometrium is critical for implantation. In recent years, evidence has emerged from studies in humans and several other animal species that exosomes are secreted from the endometrium and trophoblast cells and may play an important role in cell-to-cell communication maternal-fetal interface during early pregnancy. Exosomes are stable extracellular lipid bilayer vesicles that encapsulate proteins, miRNAs, and mRNAs, with the ability to deliver their cargo to near and distant sites, altering cellular function(s)...
November 9, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27821126/efficient-generation-of-ggta1-null-diannan-miniature-pigs-using-talens-combined-with-somatic-cell-nuclear-transfer
#5
Wenmin Cheng, Heng Zhao, Honghao Yu, Jige Xin, Jia Wang, Luyao Zeng, Zaimei Yuan, Yubo Qing, Honghui Li, Baoyu Jia, Cejun Yang, Youfeng Shen, Lu Zhao, Weirong Pan, Hong-Ye Zhao, Wei Wang, Hong-Jiang Wei
BACKGROUND: α1,3-Galactosyltransferase (GGTA1) is essential for the biosynthesis of glycoproteins and therefore a simple and effective target for disrupting the expression of galactose α-1,3-galactose epitopes, which mediate hyperacute rejection (HAR) in xenotransplantation. Miniature pigs are considered to have the greatest potential as xenotransplantation donors. A GGTA1-knockout (GTKO) miniature pig might mitigate or prevent HAR in xenotransplantation. METHODS: Transcription activator-like effector nucleases (TALENs) were designed to target exon 6 of porcine GGTA1 gene...
November 8, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27814762/risk-of-adverse-pregnancy-and-perinatal-outcomes-after-high-technology-infertility-treatment-a-comprehensive-systematic-review
#6
REVIEW
Stefano Palomba, Roy Homburg, Susanna Santagni, Giovanni Battista La Sala, Raoul Orvieto
In the literature, there is growing evidence that subfertile patients who conceived after infertility treatments have an increased risk of pregnancy and perinatal complications and this is particularly true for patients who conceived through use of high technology infertility treatments. Moreover, high technology infertility treatments include many concomitant clinical and biological risk factors. This review aims to summarize in a systematic fashion the current evidence regarding the relative effect of the different procedures for high technology infertility treatments on the risk of adverse pregnancy and perinatal outcome...
November 4, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27809846/the-participation-of-the-muscarinic-receptors-in-the-preoptic-anterior-hypothalamic-areas-in-the-regulation-of-ovulation-depends-on-the-ovary
#7
Adriana Espinosa-Valdez, Angélica Flores, Isabel Arrieta-Cruz, Mario Cárdenas, Roberto Chavira, Roberto Domínguez, María Esther Cruz
BACKGROUND: Muscarinic receptors (mAChRs) of the preoptic and anterior hypothalamus areas (POA-AHA) regulate ovulation in an asymmetric manner during the estrous cycle. The aims of the present study were to analyze the effects of a temporal blockade of mAChRs on either side of the POA-AHA performed in diestrus-2 rats on ovulation, the levels of estradiol, follicle stimulating hormone (FSH) and luteinizing hormone (LH) and the mechanisms involved in changes in ovulation. METHODS: Cyclic rats on diestrus-2 day were anesthetized and randomly assigned to the following groups: 1) microinjection of 1 μl of saline or atropine solution (62...
November 4, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27809920/assisted-reproductive-technology-pregnancy-complications-are-significantly-associated-with-endometriosis-severity-before-conception-a-retrospective-cohort-study
#8
Tatsuya Fujii, Osamu Wada-Hiraike, Takeshi Nagamatsu, Miyuki Harada, Tetsuya Hirata, Kaori Koga, Tomoyuki Fujii, Yutaka Osuga
BACKGROUND: Endometriosis has been shown to be associated with second- to third-trimester pregnancy complications such as preterm birth and placenta previa, but the evidence is inconsistent. We hypothesized that endometriosis severity might affect these inconsistent results. Therefore we aimed to conduct a retrospective cohort study to elucidate whether endometriosis severity is associated with the incidence rates of adverse pregnancy outcomes. METHODS: The patients who achieved singleton pregnancy by assisted reproductive technology (ART) in our facility between March 2000 and December 2014 (N = 631) were included in this analysis...
November 3, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27809915/biallelic-modification-of-il2rg-leads-to-severe-combined-immunodeficiency-in-pigs
#9
Jung-Taek Kang, Bumrae Cho, Junghyun Ryu, Caitlin Ray, Eun-Jin Lee, Yun-Jin Yun, SunMi Ahn, JinSeok Lee, Dal-Young Ji, Nathaniel Jue, Sherrie Clark-Deener, Kiho Lee, Kwang-Wook Park
BACKGROUND: Pigs with SCID can be a useful model in regenerative medicine, xenotransplantation, and cancer cell transplantation studies. Utilizing genome editing technologies such as CRISPR/Cas9 system allows us to generate genetically engineered pigs at a higher efficiency. In this study, we report generation and phenotypic characterization of IL2RG knockout female pigs produced through combination of CRISPR/Cas9 system and SCNT. As expected, pigs lacking IL2RG presented SCID phenotype...
November 3, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27793163/involvement-of-mesosalpinx-in-endometrioma-is-a-possible-risk-factor-for-decrease-of-ovarian-reserve-after-cystectomy-a-retrospective-cohort-study
#10
Ai Saito, Akira Iwase, Tomoko Nakamura, Satoko Osuka, Bayasula, Tomohiko Murase, Nao Kato, Chiharu Ishida, Sachiko Takikawa, Maki Goto, Fumitaka Kikkawa
BACKGROUND: Serum anti-Müllerian hormone (AMH) concentration has been used to assess ovarian reserve in patients with endometriosis, especially when endometrioma surgery is involved. Previously, we reported that decreased serum AMH levels after cystectomy for endometriomas can recover to preoperative levels in some cases. In this present study, we assessed the sequential changes in serum AMH levels before and after cystectomy in terms of the state of the mesosalpinx prior to surgery...
October 28, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27769286/relationship-between-advanced-glycation-end-products-and-steroidogenesis-in-pcos
#11
Deepika Garg, Zaher Merhi
BACKGROUND: Women with PCOS have elevated levels of the harmful Advanced Glycation End Products (AGEs), which are highly reactive molecules formed after glycation of lipids and proteins. Additionally, AGEs accumulate in the ovaries of women with PCOS potentially contributing to the well-documented abnormal steroidogenesis and folliculogenesis. MAIN BODY: A systematic review of articles and abstracts available in PubMed was conducted and presented in a systemic manner...
October 21, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27769268/second-harmonic-generation-microscopy-reveals-collagen-fibres-are-more-organised-in-the-cervix-of-postmenopausal-women
#12
Brenda F Narice, Nicola H Green, Sheila MacNeil, Dilly Anumba
BACKGROUND: During labour, the cervix undergoes a series of changes to allow the passage of the fetoplacental unit. While this visible transformation is well-described, the underlying and causative microscopic changes, in which collagen plays a major role, are poorly understood and difficult to visualise. Recent studies in mice and humans have shown that Second Harmonic Generation (SHG) microscopy, a non-destructive imaging technique, can detect changes in the cervical collagen. However, the question of whether SHG can identify changes in the arrangement of cervical collagen at different physiological stages still needs addressing...
October 21, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27760569/abdominal-ectopic-pregnancy-after-in-vitro-fertilization-and-single-embryo-transfer-a-case-report-and-systematic-review
#13
Nicole Yoder, Reshef Tal, J Ryan Martin
BACKGROUND: Ectopic pregnancy is the leading cause of maternal morbidity and mortality during the first trimester and the incidence increases dramatically with assisted-reproductive technology (ART), occurring in approximately 1.5-2.1 % of patients undergoing in-vitro fertilization (IVF). Abdominal ectopic pregnancy is a rare yet clinically significant form of ectopic pregnancy due to potentially high maternal morbidity. While risk factors for ectopic pregnancy after IVF have been studied, very little is known about risk factors specific for abdominal ectopic pregnancy...
October 19, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27756404/local-intra-uterine-ang-1-7-infusion-attenuates-pge2-and-6-keto-pgf1%C3%AE-in-decidualized-uterus-of-pseudopregnant-rats
#14
K Bridget Brosnihan, Victor M Pulgar, Manish S Bharadwaj, Liomar A A Neves, Liliya M Yamaleyeva
BACKGROUND: Cyclooxygenase (COX)-derived prostanoids (PGE2, PGI2) are important contributors to the process of decidualization. Previous studies showed the presence of Ang-(1-7) in the primary and secondary decidualized zones of the implantation site at early pregnancy. Decreased concentrations of Ang-(1-7) were found in the decidualized uterus compared to the non-decidualized uterus of pseudopregnant rats, suggesting that low levels of Ang-(1-7) are required for successful decidualization at early pregnancy...
October 18, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27756332/effects-of-hyperandrogenism-on-metabolic-abnormalities-in-patients-with-polycystic-ovary-syndrome-a-meta-analysis
#15
Rui Yang, Shuo Yang, Rong Li, Ping Liu, Jie Qiao, Yanwu Zhang
BACKGROUND: The study evaluated the effect of hyperandrogenism (HA) in polycystic ovary syndrome (PCOS) on metabolic parameters. METHODS: We searched PubMed, EMBASE, Cochrane, Web of Science, Chinese Biomedical Database (CBM), China National Knowledge Infrastructure (CNKI), WanFang data and VIP for clinical observational studies. The study evaluated PCOS patients with or without HA on metabolic parameters was included. Prevalence of metabolic syndrome, indexes of insulin resistance (IR) including homeostasis model assessment IR index (HOMA-IR), incidence of IR, biomarkers of serum lipid metabolism such as total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL), and low density lipoprotein (LDL)...
October 18, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27724926/anti-platelet-therapy-holds-promises-in-treating-adenomyosis-experimental-evidence
#16
Bo Zhu, Yumei Chen, Xiaolu Shen, Xishi Liu, Sun-Wei Guo
BACKGROUND: Recently emerging evidence indicates that endometriotic lesions are wounds undergoing repeated tissue injury and repair (ReTIAR), and platelets induce epithelial-mesenchymal transition (EMT), fibroblast-to-myofibroblast transdifferentiation (FMT), leading ultimately to fibrosis. Due to the commonality of cyclic bleeding as in endometriosis, adenomyotic lesions are also wounds that undergo ReTIAR, and we have recently provided evidence corroborating platelet-induced EMT, FMT and fibrogenesis in adenomyosis...
October 10, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27717400/expression-and-regulation-of-atf6%C3%AE-in-the-mouse-uterus-during-embryo-implantation
#17
Yongjie Xiong, Wenzhe Li, Pengfei Lin, Lei Wang, Nan Wang, Fenglei Chen, Xiao Li, Aihua Wang, Yaping Jin
BACKGROUND: ATF6α, one of the sensor proteins in the stress signaling pathway of the endoplasmic reticulum, is located in the membrane of the endoplasmic reticulum. To date, the physiological function of ATF6α in the process of embryo implantation has not been reported. METHODS: In this study, the expression pattern of ATF6α in the mouse uterus during peri-implantation and the estrous cycle was detected by real-time PCR, western blot and immunohistochemistry...
October 7, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27716434/oestrogen-induced-angiogenesis-and-implantation-contribute-to-the-development-of-parasitic-myomas-after-laparoscopic-morcellation
#18
Ben-Shian Huang, Muh-Hwa Yang, Peng-Hui Wang, Hsin-Yang Li, Teh-Ying Chou, Yi-Jen Chen
BACKGROUND: Iatrogenic parasitic myomas (PMs), caused by intra-corporeal power morcellation during laparoscopy is gradually increasing. However, the pathogenesis and medical treatment of PMs remain largely unelucidated. METHODS: Laparoscopically-induced PM xenografted mouse model was conducted by xenografting human uterine myoma fragments into the abdominal cavity of SCID mice and hormonal manipulation was performed using this mouse model to demonstrate the role of oestrogen in the development of implanted PMs...
October 6, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27669889/comment-on-biosimilar-fsh-preparations-are-they-identical-twins-or-just-siblings
#19
Thomas Strowitzki, Waldemar Kuczynski, Arnd Mueller, Peter Bias
No abstract text is available yet for this article.
September 26, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27645154/adenomyosis-in-infertile-women-prevalence-and-the-role-of-3d-ultrasound-as-a-marker-of-severity-of-the-disease
#20
J M Puente, A Fabris, J Patel, A Patel, M Cerrillo, A Requena, J A Garcia-Velasco
BACKGROUND: Adenomyosis is linked to infertility, but the mechanisms behind this relationship are not clearly established. Similarly, the impact of adenomyosis on ART outcome is not fully understood. Our main objective was to use ultrasound imaging to investigate adenomyosis prevalence and severity in a population of infertile women, as well as specifically among women experiencing recurrent miscarriages (RM) or repeated implantation failure (RIF) in ART. METHODS: Cross-sectional study conducted in 1015 patients undergoing ART from January 2009 to December 2013 and referred for 3D ultrasound to complete study prior to initiating an ART cycle, or after ≥3 IVF failures or ≥2 miscarriages at diagnostic imaging unit at university-affiliated private IVF unit...
September 20, 2016: Reproductive Biology and Endocrinology: RB&E
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