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https://www.readbyqxmd.com/read/29248225/reproductive-performance-and-herd-exit-dynamics-of-lactating-dairy-cows-managed-for-first-service-with-the-presynch-ovsynch-or-double-ovsynch-protocol-and-different-duration-of-the-voluntary-waiting-period
#1
M L Stangaferro, R Wijma, M Masello, J O Giordano
The objective of this experiment was to evaluate the reproductive performance and herd exit dynamics of dairy cows managed for first service with programs varying in method of submission for insemination and voluntary waiting period (VWP) duration. Holstein cows from a commercial farm in New York were randomly allocated to receive timed artificial insemination (TAI) after the Double-Ovsynch protocol (GnRH, 7 d later PGF2α, 3 d later GnRH, 7 d later GnRH, 7 d later PGF2α, 56 h later GnRH, and 16 to 18 h later TAI) at 60 ± 3 d in milk (DIM) (DO60 = 458), TAI after Double-Ovsynch at 88 ± 3 DIM (DO88 = 462), or a combination of AI at detected estrus (starting at 50 ± 3 d in milk) and TAI with the Presynch-Ovsynch protocol (PGF2α, 14 d later PGF2α, 12 d later GnRH, 7 d later PGF2α, 56 h later GnRH, and 16 to 18 h later TAI; PSOv = 450)...
December 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29234102/endometrial-apoptosis-and-neutrophil-infiltration-during-menstruation-exhibits-spatial-and-temporal-dynamics-that-are-recapitulated-in-a-mouse-model
#2
Gregory M Armstrong, Jacqueline A Maybin, Alison A Murray, Moira Nicol, Catherine Walker, Philippa T K Saunders, Adriano G Rossi, Hilary O D Critchley
Menstruation is characterised by synchronous shedding and restoration of tissue integrity. An in vivo model of menstruation is required to investigate mechanisms responsible for regulation of menstrual physiology and to investigate common pathologies such as heavy menstrual bleeding (HMB). We hypothesised that our mouse model of simulated menstruation would recapitulate the spatial and temporal changes in the inflammatory microenvironment of human menses. Three regulatory events were investigated: cell death (apoptosis), neutrophil influx and cytokine/chemokine expression...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29207177/regulation-of-steroid-hormones-in-the-placenta-and-serum-of-women-with-preeclampsia
#3
Ye Young Shin, Jea Sic Jeong, Mee-Na Park, Jae-Eon Lee, Sung-Min An, Wan-Seob Cho, Seung Chul Kim, Beum-Soo An, Kyu-Sup Lee
Preeclampsia (PE) is a pregnancy‑specific hypertensive syndrome that results in substantial maternal and fetal morbidity and mortality. The exact cause of PE has not been completely elucidate, although abnormal formation of the placenta has been considered. The placenta connects the developing fetus to the uterine wall, producing a large quantity of steroid hormones to maintain pregnancy. Although steroid hormones, particularly progesterone (P4) and estrogen (E2), in the serum of women with PE have been studied, steroidogenesis in the placenta has not well been established...
November 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29202469/h3k27me3-dynamics-dictate-evolving-uterine-states-in-pregnancy-and-parturition
#4
Patrice Nancy, Johan Siewiera, Gabrielle Rizzuto, Elisa Tagliani, Ivan Osokine, Priyanka Manandhar, Igor Dolgalev, Caterina Clementi, Aristotelis Tsirigos, Adrian Erlebacher
Uncovering the causes of pregnancy complications such as preterm labor requires greater insight into how the uterus remains in a noncontractile state until term and then surmounts this state to enter labor. Here, we show that dynamic generation and erasure of the repressive histone modification tri-methyl histone H3 lysine 27 (H3K27me3) in decidual stromal cells dictate both elements of pregnancy success in mice. In early gestation, H3K27me3-induced transcriptional silencing of select gene targets ensured uterine quiescence by preventing the decidua from expressing parturition-inducing hormone receptors, manifesting type 1 immunity, and most unexpectedly, generating myofibroblasts and associated wound-healing responses...
November 27, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29175682/expression-of-progesterone-receptor-protein-in-the-ovine-uterus-during-the-estrous-cycle-effects-of-nutrition-arginine-and-fsh
#5
Anna T Grazul-Bilska, Jiratti Thammasiri, Aree Kraisoon, Arshi Reyaz, Casie S Bass, Samantha L Kaminski, Chainarong Navanukraw, Dale A Redmer
To evaluate expression of progesterone receptor (PGR) AB in follicle stimulating hormone (FSH)-treated or non-treated sheep administered with arginine (Arg) or saline (Sal) fed a control (C), excess (O) or restricted (U) diet, uterine tissues were collected at the early, mid and/or late luteal phases. In exp. 1, ewes from each diet were randomly assigned to one of two treatments, Arg or Sal administration three times daily from day 0 of the first estrous cycle until uterine tissue collection. In exp. 2, ewes were injected twice daily with FSH on days 13-15 of the first estrous cycle...
November 20, 2017: Theriogenology
https://www.readbyqxmd.com/read/29122954/pregnancy-adapted-uterine-artery-endothelial-cell-ca2-signaling-and-its-relationship-with-membrane-potential
#6
Roxanne E Alvarez, Derek S Boeldt, Bikash R Pattnaik, Hannah L Friedman, Ian M Bird
Pregnancy-derived uterine artery endothelial cells (P-UAEC) express P2Y2 receptors and at high cell density show sustained and synchronous [Ca2+]i burst responses in response to ATP Bursts in turn require coupling of transient receptor potential canonical type3 channel (TRPC3) and inositol 1,4,5-triphosphate receptor type 2 (IP3R2), which is upregulated in P-UAEC in a manner dependent on connexin 43 (Cx43) gap junctions. While there is no known direct interaction of TRPC3 with Cx43, early descriptions of TRPC3 function showed it may also be influenced by altered membrane potential (Vm)...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29117499/preclinical-chorioamnionitis-dysregulates-cxcl1-cxcr2-signaling-throughout-the-placental-fetal-brain-axis
#7
REVIEW
Tracylyn R Yellowhair, Shahani Noor, Jessie R Maxwell, Christopher V Anstine, Akosua Y Oppong, Shenandoah Robinson, Erin D Milligan, Lauren L Jantzie
In the United States, perinatal brain injury (PBI) is a major cause of infant mortality and childhood disability. For a large proportion of infants with PBI, central nervous system (CNS) injury begins in utero with inflammation (chorioamnionitis/CHORIO) and/or hypoxia-ischemia. While studies show CHORIO contributes to preterm CNS injury and is also a common independent risk factor for brain injury in term infants, the molecular mechanisms mediating inflammation in the placental-fetal-brain axis that result in PBI remain a gap in knowledge...
November 5, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/29100521/dce-mri-of-patient-derived-xenograft-models-of-uterine-cervix-carcinoma-associations-with-parameters-of-the-tumor-microenvironment
#8
Anette Hauge, Catherine S Wegner, Jon-Vidar Gaustad, Trude G Simonsen, Lise Mari K Andersen, Einar K Rofstad
BACKGROUND: Abnormalities in the tumor microenvironment are associated with resistance to treatment, aggressive growth, and poor clinical outcome in patients with advanced cervical cancer. The potential of dynamic contrast-enhanced (DCE) MRI to assess the microvascular density (MVD), interstitial fluid pressure (IFP), and hypoxic fraction of patient-derived cervical cancer xenografts was investigated in the present study. METHODS: Four patient-derived xenograft (PDX) models of squamous cell carcinoma of the uterine cervix (BK-12, ED-15, HL-16, and LA-19) were subjected to Gd-DOTA-based DCE-MRI using a 7...
November 3, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29077897/in-vivo-oxygen-temperature-and-ph-dynamics-in-the-female-reproductive-tract-and-their-importance-in-human-conception-a-systematic-review
#9
Ka Ying Bonnie Ng, Roel Mingels, Hywel Morgan, Nick Macklon, Ying Cheong
BACKGROUND: Despite advances in ART, implantation and pregnancy rates per embryo transfer still remain low. IVF laboratories strive to ensure that the process of handling gametes in vitro closely mimics the in vivo environment. However, there remains a lack of knowledge regarding the in vivo regulation and dynamic variation in biophysical parameters such as oxygen concentration, pH and temperature within the reproductive tract. OBJECTIVE AND RATIONALE: To undertake a systematic review of the current understanding of the physico-chemical parameters of oxygen tension (pO2), pH and temperature within the female reproductive tract, and their potential implications in clinical and pathological processes related to fertility and those pertaining to limited reproductive capacity...
January 1, 2018: Human Reproduction Update
https://www.readbyqxmd.com/read/29055542/extending-the-duration-of-the-voluntary-waiting-period-from-60-to-88-days-in-cows-that-received-timed-artificial-insemination-after-the-double-ovsynch-protocol-affected-the-reproductive-performance-herd-exit-dynamics-and-lactation-performance-of-dairy-cows
#10
M L Stangaferro, R W Wijma, M Masello, Mark J Thomas, J O Giordano
This experiment evaluated the reproductive performance, herd exit dynamics, and lactation performance of dairy cows managed with a voluntary waiting period (VWP) of 60 or 88 d. Secondary objectives were evaluating VWP effect on cyclicity status, uterine health, systemic inflammation, and body condition score (BCS) before first service. Lactating Holstein cows from 3 commercial farms in New York State cows were blocked by parity group and total milk yield in their previous lactation and then randomly assigned to VWP of 60 (VWP60; n = 1,352) or 88 (VWP88; n = 1,359) days in milk (DIM)...
October 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29053991/molecular-mechanisms-of-development-of-the-human-fetal-female-reproductive-tract
#11
Gerald R Cunha, Takeshi Kurita, Mei Cao, Joel Shen, Stanley Robboy, Laurence Baskin
Human female reproductive tract development rests mostly upon hematoxilyn and eosin stained sections despite recent advances on molecular mechanisms in mouse studies. We report application of immunohistochemical methods to explore the ontogeny of epithelial and mesenchymal differentiation markers (keratins, homobox proteins, steroid receptors), transcription factors and signaling molecules (TP63 and RUNX1) during human female reproductive tract development. Keratins 6, 7, 8, 10, 14 and 19 (KRT6, KRT7, KRT8, KRT10, KRT14, KRT19) were expressed in a temporally and spatially dynamic fashion...
July 29, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/29033397/a-transvaginal-endoscopy-based-technique-for-performing-ovarian-examinations-in-sows
#12
Minami W Okuyama, Tomochika Sugiura, Masaharu Moriyoshi, Kazuto Yamashita, Jun Tamura, Seiji Katagiri
For examining pig ovaries, which have complex structures, laparoscopy is a useful technique, but requires general anesthesia; therefore, it cannot be performed repeatedly within a short period of time. We report a transvaginal endoscopy-based technique for conducting ovarian examinations without general anesthesia. Sows were sedated in pig stalls. Using a colonoscope, the vaginal wall was punctured with a trocar. To avoid the trocar being caught in the broad ligament of the uterus or the connective tissue around the vagina, the trocar was inserted close to the external uterine os and between the 2:00 and 3:00 or the 9:00 and 10:00 positions (in a clockwise direction)...
October 14, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28989909/evaluation-of-progesterone-and-ovulation-stimulating-drugs-on-the-glandular-epithelium-and-angiogenesis-in-mice
#13
Bahman Rashidi, Mohammad Mardani, Mostafa Peyvandi Karizbodagh
BACKGROUND: Human endometrium is a dynamic tissue during the menstrual cycle can be influenced by ovarian hormones. The purpose of this study was to evaluate the endometrium angiogenesis under the influence of human menopausal gonadotropin and human chorionic gonadotropin (HMG and HCG) that stimulate ovulation and progesterone. MATERIALS AND METHODS: In this study, thirty adult female mice were randomly divided into three groups as: control, gonadotropin and gonadotropin + progesterone...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28982184/uptake-and-release-of-amino-acids-in-the-fetal-placental-unit-in-human-pregnancies
#14
Maia Blomhoff Holm, Nasser Ezzatkhah Bastani, Ane Moe Holme, Manuela Zucknick, Thomas Jansson, Helga Refsum, Lars Mørkrid, Rune Blomhoff, Tore Henriksen, Trond Melbye Michelsen
OBJECTIVES: The current concepts of human fetal-placental amino acid exchange and metabolism are mainly based on animal-, in vitro- and ex vivo models. We aimed to determine and assess the paired relationships between concentrations and arteriovenous differences of 19 amino acids on the maternal and fetal sides of the human placenta in a large study sample. METHODS: This cross-sectional in vivo study included 179 healthy women with uncomplicated term pregnancies...
2017: PloS One
https://www.readbyqxmd.com/read/28939933/cellular-mechanics-of-primary-human-cervical-fibroblasts-influence-of-progesterone-and-a-pro-inflammatory-cytokine
#15
Vasudha Shukla, Victoria Barnhouse, William E Ackerman, Taryn L Summerfield, Heather M Powell, Jennifer L Leight, Douglas A Kniss, Samir N Ghadiali
The leading cause of neonatal mortality, pre-term birth, is often caused by pre-mature ripening/opening of the uterine cervix. Although cervical fibroblasts play an important role in modulating the cervix's extracellular matrix (ECM) and mechanical properties, it is not known how hormones, i.e., progesterone, and pro-inflammatory insults alter fibroblast mechanics, fibroblast-ECM interactions and the resulting changes in tissue mechanics. Here we investigate how progesterone and a pro-inflammatory cytokine, IL-1β, alter the biomechanical properties of human cervical fibroblasts and the fibroblast-ECM interactions that govern tissue-scale mechanics...
September 22, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28938408/pioneer-factors-foxa1-and-foxa2-assist-selective-glucocorticoid-receptor-signaling-in-human-endometrial-cells
#16
Shannon Whirledge, Edwina P Kisanga, Robert N Taylor, John A Cidlowski
Successful pregnancy relies on dynamic control of cell signaling to achieve uterine receptivity and the necessary biological changes required for endometrial decidualization, embryo implantation, and fetal development. Glucocorticoids are master regulators of intracellular signaling and can directly regulate embryo implantation and endometrial remodeling during murine pregnancy. In immortalized human uterine cells, we have shown that glucocorticoids and estradiol (E2) coregulate thousands of genes. Recently, glucocorticoids and E2 were shown to coregulate the expression of Left-right determination factor 1 (LEFTY1), previously implicated in the regulation of decidualization...
November 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28915450/molecular-signature-and-functional-analysis-of-uterine-ilcs-in-mouse-pregnancy
#17
Minmin Li, Yimin Gao, Liang Yong, Dake Huang, Jijia Shen, Miao Liu, Cuiping Ren, Xin Hou
In addition to natural killer cells, other innate lymphoid cells have recently been identified in the mouse and human uterus, but their roles in successful pregnancy remain poorly defined. In this study, we examined the dynamic changes of uterine innate lymphoid cells throughout pregnancy in mice. We found that the total number of uterine innate lymphoid cells markedly increased at early-gestation. Among the three groups of uterine innate lymphoid cells, the number of the group 2 uterine innate lymphoid cells increased the most during pregnancy...
September 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28914881/microrna-200c-impairs-uterine-receptivity-formation-by-targeting-fut4-and-%C3%AE-1-3-fucosylation
#18
Qin Zheng, Dandan Zhang, Y U Yang, Xinyuan Cui, Jiaqi Sun, Caixia Liang, Huamin Qin, Xuesong Yang, Shuai Liu, Qiu Yan
Successful embryo implantation requires the establishment of a receptive endometrium. Poor endometrial receptivity has generally been considered as a major cause of infertility. Protein glycosylation is associated with many physiological and pathological processes. The fucosylation is catalyzed by the specific fucosyltransferases. Fucosyltransferase IV (FUT4) is the key enzyme for the biosynthesis of α1,3-fucosylated glycans carried by glycoproteins, and the previous studies showed FUT4 expression changed dynamically during perimplantation...
December 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28822903/uterine-clinical-findings-fertility-rate-leucocyte-migration-and-cox-2-protein-levels-in-the-endometrial-tissue-of-susceptible-mares-treated-with-platelet-rich-plasma-before-and-after-ai
#19
Lorenzo G Segabinazzi, Aime M Friso, Sebastian B Correal, André M Crespilho, José Antonio Dell'Aqua, Jordi Miró, Frederico O Papa, Marco Antonio Alvarenga
Persistent mating-induced endometritis (PMIE) results in decreased fertility in horses, thereby causing a significant impact in the horse market. Platelet-rich plasma (PRP), a modulator of the inflammatory response, has been largely used in veterinary medicine. Here, we investigated the effects of PRP on uterine inflammation, conception rate, endometrial polymorphonuclear neutrophil (PMN) migration, and COX-2 protein levels in the endometrial tissue. Thirteen PMIE-susceptible mares were used for artificial insemination (AI)...
August 12, 2017: Theriogenology
https://www.readbyqxmd.com/read/28731465/pr-set7-deficiency-limits-uterine-epithelial-population-growth-hampering-postnatal-gland-formation-in-mice
#20
Tongtong Cui, Bo He, Shuangbo Kong, Chan Zhou, Hangxiao Zhang, Zhangli Ni, Haili Bao, Jingtao Qiu, Qiliang Xin, Danny Reinberg, John P Lydon, Jinhua Lu, Haibin Wang
Formation of secretary endometrial glands in the uterus known as adenogenesis is a typical process of branching morphogenesis involving dynamic epithelial growth and differentiation. Unsuccessful adenogenesis often leads to female infertility. However, it remains largely unexplored so far regarding the epigenetic machinery governing normal endometrial gland formation. Here, we demonstrated that PR-Set7, an epigenetic regulator for H4K20me1 modification, was extensively expressed in the postnatal uteri, and its conditional deletion resulted in a complete lack of endometrial glands and infertility in mice...
December 2017: Cell Death and Differentiation
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