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Reproduction: the Official Journal of the Society for the Study of Fertility

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https://www.readbyqxmd.com/read/29439094/uterine-and-placental-distribution-of-selected-extracellular-matrix-ecm-components-in-the-dog
#1
Felix R Graubner, Alois Boos, Selim Aslan, Ibrahim Kücükaslan, Mariusz P Kowalewski
For many years, modifications of the uterine extracellular matrix (ECM) during gestation have not been considered as critical for successful canine (Canis lupus familiaris) pregnancy. However previous reports indicated an effect of free-floating blastocysts on the composition of the uterine ECM. Here, the expression of selected genes involved in structural functions, cell-to-cell communication and inhibition of matrix metalloproteinases were targeted utilizing qPCR and immunohistochemistry. We found that canine free-floating embryos affect gene expression of FN1, ECM1 and TIMP4...
February 9, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29439093/dysregulated-genes-and-their-functional-pathways-in-luteinized-granulosa-cells-from-pcos-patients-after-cabergoline-treatment
#2
Hortensia Ferrero, Patricia Diaz-Gimeno, Patricia Sebastian-Leon, Amparo Faus, Raul Gómez, Antonio Pellicer
Polycystic ovarian syndrome (PCOS) is a common reproductive disorder frequently associated with a substantial risk factor for ovarian hyperstimulation syndrome (OHSS). Dopamine receptor 2 (D2) agonists, like Cabergoline (Cb2), have been used to reduce the OHSS risk. However, lutein granulosa cells (LGCs) from PCOS patients treated with Cb2 still show a deregulated dopaminergic tone (decreased D2 expression and low dopamine production) and increased vascularization compared to non-PCOS LGCs. Therefore, to understand the PCOS ovarian physiology, it is important to explore the mechanisms that underlie syndrome based on the therapeutic effects of Cb2...
February 9, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29434054/influence-of-dutasteride-and-nifedipine-on-catsper-gene-expression-in-epididymis-of-mice
#3
Archana Srivastav, Bendangla Changkija, Kunal Sharan, Geet Kumar Nagar, Falgun Wanganuji Bansode
Calcium (Ca2+) signaling is critical for successful fertilization. In spermatozoa, capacitation, hyperactivation of motility and the acrosome reaction are all mediated by increases in intracellular Ca2 + through CatSper (sperm specific cation channel). The CatSper channel complex contains four pore forming α subunits (CatSper1-4 ) and five accessory subunits called β, δ, ε, γ and ζ . Genetic deletion of any of the four CatSper genes in mice results in loss of hyperactivated motility and male infertility...
February 6, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29420253/the-c-x-c-signalling-system-in-the-rodent-vs-primate-testis-impact-on-germ-cell-niche-interaction
#4
Laura Heckmann, Tim Pock, Ina Tröndle, Nina Neuhaus
In zebrafish, action of the chemokine Cxcl12 is mediated through its G-protein coupled seven-transmembrane domain receptor Cxcr4 and the atypical receptor Cxcr7. Employing this animal model it was revealed that this Cxcl12 signalling system plays a crucial role for directed migration of primordial germ cells (PGC) during early testicular development. Importantly, subsequent studies indicated that this regulatory mechanism is evolutionarily conserved also in mice. What is more, the functional role of the CXCL12 system does not seem to be limited to early phases of testicular development...
February 2, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29420252/role-of-osteopontin-in-decidualization-and-pregnancy-success
#5
Xiaobo Wang, Qianrong Qi, Kailin Wu, Qingzhen Xie
OPN is essential for blastocyst implantation and placentation. Previous study found that miR181a was increased while miR181b was down-regulated in endometrium during decidualization. However, the information regarding their effects on decidualization in human endometrium is still limited. Here we report a novel role of OPN and miR181b in uterine decidualization and pregnancy success in humans. The expression of OPN was high in endometrium in secretory phase and in vitro decidualized hESC, whereas miR181b expression was low in identical conditions...
February 2, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29438034/c1qtnf3-in-the-murine-ovary-and-its-function-in-folliculogenesis
#6
Zhoufei Mao, Liuhong Yang, Xiaosheng Lu, Anni Tan, Yuxia Wang, Fei Ding, Luanjuan Xiao, Xufeng Qi, Yanhong Yu
C1q/tumor necrosis factor-related protein 3 (C1QTNF3) is a novel adipokine with modulating effects on metabolism, inflammation, and the cardiovascular system. C1QTNF3 expression levels in the sera and omental adipose tissues of women with PCOS are low compared to control subjects. However, the expression and function of C1QTNF3 in the ovary has not previously been examined. Here, we assessed the expression patterns of C1qtnf3 in the ovary and explored its role in folliculogenesis. The C1qtnf3 transcript abundance was higher in large follicles than in small follicles and was under the influence of gonadotropin...
February 1, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29386378/ovarian-angiogenesis-in-polycystic-ovary-syndrome
#7
Mariana Di Pietro, Natalia Pascuali, Fernanda Parborell, Dalhia Abramovich
Polycystic Ovary Syndrome (PCOS) is the most prevalent endocrine pathology among women in reproductive age. Its main symptoms are oligo or amenorrhea, hyperandrogenism and the presence of ovarian cysts. It is also associated with infertility, obesity and insulin resistance. Mainly due to its heterogeneity, PCOS treatments are directed to manage its symptoms and to prevent associated diseases. The correct formation and regression of blood vessels during each ovarian cycle is indispensable for proper follicular development, ovulation and corpus luteum formation...
January 31, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29374087/food-restriction-but-not-fish-oil-increases-fertility-in-hens-role-of-rarres2
#8
Namya Mellouk, Christelle Ramé, Joël Delaveau, Christophe Rat, Maxime Marchand, Frederic Mercerand, Angelique Travel, Aurelien Brionne, Pascal Chartrin, LinLin Ma, Pascal Froment, Joëlle Dupont
Overfed hens selected for their rapid growth become fatter and develop reproductive disorders. Herein, we aimed to demonstrate that food restriction leading to a weight reduction and/or a supplementation with fish oil may be effective in preventing reproductive disorders through the regulation of adipokine expression in broiler hens. This study included four groups of food restricted (Rt) or ad libitum hens (Ad, feeding at a rate 1.7 times greater than Rt hens) supplemented or unsupplemented with fish oil (1%)...
January 26, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29374086/the-role-of-tight-junction-proteins-in-ovarian-follicular-development-and-ovarian-cancer
#9
Lingna Zhang, Tao Feng, Leon Spicer
Tight junctions (TJ) are protein structures that control the transport of water, ions and macromolecules across cell layers. Functions of the transmembrane TJ protein, occludin (OCLN), and the cytoplasmic TJ proteins, tight junction protein 1 (TJP1; also known as zona occludens protein-1), cingulin (CGN), and claudins (CLDN) are reviewed, and current evidence of their role in the ovarian function is reviewed. Abundance of OCLN, CLDNs, and TJP1 mRNA changed during follicular growth. In vitro treatment with various growth factors known to affect ovarian folliculogenesis indicated that CGN, OCLN and TJP1 are hormonally regulated...
January 26, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29363570/melatonin-reduces-oxidative-damage-in-mouse-granulosa-cells-via-restraining-jnk-dependent-autophagy
#10
Yan Cao, Ming Shen, Yi Jiang, Shao-Chen Sun, Hong-Lin Liu
Oxidative stress-induced granulosa cell (GCs) injury is believed a common trigger for follicular atresia. Emerging evidence indicates that excessive autophagy occurs in mammalian cells with oxidative damage. N-acetyl-5-methoxytrypamine (Melatonin) has been shown to prevent GCs from oxidative injury, although the exact mechanism remains to be elucidated. Here we first demonstrated that the suppression of autophagy through the JNK/BCL-2/BECN1 signaling is engaged in melatonin-mediated GCs protection against oxidative damage...
January 23, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29363569/lifr-increases-the-release-of-seng-via-the-up-regulation-of-mmp14-expression-in-pe
#11
Hua Li, Juilei Yao, Xingwen Chang, Jinting Wu, Tao Duan, Kai Wang
Preeclampsia (PE) is a pregnancy-specific disorder that is the main cause of maternal and perinatal morbidity and mortality worldwide. Inadequate trophoblastic invasion and endothelial dysfunction in the placenta are considered the foundation of the pathogenesis of preeclampsia in which soluble endoglin (sEng) plays an antiangiogenic role in the development of PE. The leukemia inhibitory factor receptor (LIFR) has been widely studied and is highly involved in arterial injury in vivo and in the migration of cancer cells in vitro...
January 23, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29363568/fkbp51-regulates-decidualization-through-ser-473-dephosphorylation-of-akt
#12
Muyun Wei, Ying Gao, Bingru Lu, Yulian Jiao, Xiaowen Liu, Bin Cui, Shengnan Hu, Linying Sun, Shaowei Mao, Jing Dong, Lei Yan, Zijiang Chen, Yueran Zhao
Defective decidualization of human endometrial stromal cells (ESCs) has recently been highlighted as an underlying cause of implantation failure. FK-506 binding protein 51 (FKBP51) has been shown to participate in the steroid hormone response and the protein kinase B (AKT) regulation process, which both are important pathways involved in decidualization. The objective of the present study was to investigate the potential effects and mechanisms of FKBP51 in the regulation of ESC decidualization. By performing immunohistochemical staining on an endometrial tissue microarray (TMA) derived from normal females, we found that FKBP51 expression was much higher in the luteal phase than in the follicular phase in ESCs...
January 23, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29363567/disruption-of-female-reproductive-function-by-endotoxins
#13
Katie Bidne, Mackenzie Dickson, Jason W Ross, Lance Baumgard, Aileen Keating
Endotoxemia can be caused by obesity, environmental chemical exposure, abiotic stressors, and bacterial infection. Circumstances that deleteriously impact intestinal barrier integrity can induce endotoxemia and controlled experiments have identified negative impacts of lipopolysaccharide (LPS; an endotoxin mimetic) on folliculogenesis, puberty onset, estrus behavior, ovulation, meiotic competence, luteal function and ovarian steroidogenesis. In addition, neonatal LPS exposures have transgenerational female reproductive impacts, raising concern about early life contacts to this endogenous reproductive toxicant...
January 23, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29339454/chromatin-remodeling-in-mammalian-embryos
#14
Birgit Cabot, Ryan Cabot
The mammalian embryo undergoes a dramatic amount of epigenetic remodeling during the first week of development. In this review, we discuss several epigenetic changes that happen over the course of cleavage development, focusing on covalent marks (e.g., histone methylation and acetylation) and non-covalent remodeling (chromatin remodeling via remodeling complexes ; e.g., SWI/SNF-mediated chromatin remodeling). Comparisons are also drawn between remodeling events that occur in embryos from a variety of mammalian species...
January 16, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29339453/pgrmc1-localization-and-putative-function-in-the-nucleolus-of-bovine-granulosa-cells-and-oocytes
#15
Laura Terzaghi, Alberto Maria Luciano, Priscila C Dall Acqua, Silvia Modina, John J Peluso, Valentina Lodde
Progesterone Receptor Membrane Component-1 (PGRMC1) is a highly conserved multifunctional protein that is found in numerous systems, including reproductive system. Interestingly, PGRMC1 is expressed at several intracellular locations, including the nucleolus. The aim of this study is to investigate the functional relationship between PGRMC1 and nucleolus. Immunofluorescence experiments confirmed PGRMC1's nucleolar localization in cultured bovine granulosa cells (bGC) and oocytes. Additional experiments conducted on bGC revealed that PGRMC1 co-localizes with nucleolin (NCL), a major nucleolar protein...
January 16, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29339452/effects-of-colostrum-feeding-method-and-oral-igf1-on-porcine-uterine-development
#16
Ashley F George, Kathleen M Rahman, Dori J Miller, Anne A Wiley, Meredith E Camp, Frank Bartol, Carol A Bagnell
Nursing ensures lactocrine delivery of maternally-derived, milk-borne bioactive factors to offspring, which affects postnatal development of female reproductive tract tissues. Disruption of lactocrine communication for two days from birth (postnatal day = PND 0) by feeding milk replacer in lieu of nursing or consumption of colostrum alters porcine uterine gene expression globally by PND 2 and inhibits uterine gland genesis by PND 14. Here, objectives were to determine effects of: 1) nursing or milk replacer feeding from birth; 2) a single dose of colostrum or milk replacer and method of feeding; and 3) a single feeding of colostrum or milk replacer, with or without oral supplementation of IGF1, administered at birth on aspects of porcine uterine development at 12 h postnatally...
January 16, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29339451/inhibition-of-5%C3%AE-reductase-alters-pregnane-metabolism-in-the-late-pregnant-mare
#17
Michelle Wynn, Barry A Ball, Erin Lea Legacki, Alan Conley, Shavahn Loux, John May, Alejandro Esteller-Vico, Scott D Stanley, Kirsten Scoggin, Edward L Squires, Mats Ht Troedsson
In the latter half of gestation in the mare, progesterone concentrations decline to near undetectable levels while other 5α-reduced pregnanes are elevated. Of these, 5α-dihydroprogesterone and allopregnanolone have been reported to have important roles in either pregnancy maintenance or fetal quiescence. During this time, the placenta is necessary for pregnane metabolism, with the enzyme 5α-reductase being required for the conversion of progesterone to 5α-dihydroprogesterone. The objectives of this study were to assess the effects of a 5α-reductase inhibitor, dutasteride, on pregnane metabolism (pregnenolone, progesterone, 5α-dihydroprogesterone, 20α-hydroxy-5α-pregnan-3-one, 5α-pregnane-3β,20α-diol, and allopregnanolone), to determine circulating dutasteride concentrations, and to assess effects of dutasteride treatment on gestational parameters...
January 16, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29301980/mir-210-and-gpd1l-regulate-edn2-in-primary-and-immortalized-human-granulosa-lutein-cells
#18
Ketan Shrestha, Adepeju Esther Onasanya, Iris Eisenberg, Noa Wigoda, Simcha Yagel, Ronit Yalu, Rina Meidan, Tal Imbar
Endothelin-2 (EDN2), expressed at a narrow window during the periovulatory period, critically affects ovulation and corpus luteum (CL) formation. LH (acting mainly via cAMP) and hypoxia are implicated in CL formation; therefore, we aimed to elucidate how these signals regulate EDN2 using human primary (hGLCs) and immortalized (SVOG) granulosa-lutein cells. The hypoxiamiR, microRNA-210 (miR-210) was identified as a new essential player in EDN2 expression. Hypoxia (either mimetic compound-CoCl2, or low O2) elevated hypoxia inducible factor 1A (HIF1A), miR-210, and EDN2...
January 4, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29301979/increased-rounds-of-gonadotropin-stimulation-have-side-effects-on-mouse-fallopian-tubes-and-oocytes
#19
Valentina Di Nisio, Gianna Rossi, Maria Grazia Palmerini, Guido Macchiarelli, Gian Mario Tiboni, Sandra Cecconi
In this study it was evaluated if increased rounds of gonadotropin stimulation could affect in mice: i) expression levels of proteins regulating cell cycle and DNA repair in fallopian tubes and ii) meiotic spindle morphology of ovulated oocytes. To this end, adult female mice were subjected or not (Control) to 6 or 8 rounds of gonadotropin stimulation. Ovulated oocytes were incubated with anti A/B Tubulin to evaluate spindle morphology. Fallopian tubes were analyzed to detect Cyclin D1, phospho-p53/p53, phospho-AKT/AKT, phospho-GSK3B/GSK3B, SOX2, OCT3/4, phospho-B-catenin/B-catenin, phospho-CHK1, and phospho-H2A...
January 4, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29269517/cell-free-fetal-dna-and-spontaneous-preterm-birth
#20
Sara R van Boeckel, Donald J Davidson, Jane E Norman, Sarah J Stock
Inflammation is known to play a key role in preterm and term parturition. Cell-free Fetal DNA (cff-DNA) is present in the maternal circulation and increases with gestational age and some pregnancy complications (eg preterm birth, pre-eclampsia). Microbial DNA and adult cell-free DNA can be pro-inflammatory through DNA sensing mechanisms such as toll-like receptor 9 and the Stimulator of Interferon Genes (STING) pathway. However, the pro-inflammatory properties of cff-DNA, and the possible effects of this on pregnancy and parturition are unknown...
December 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
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