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https://www.readbyqxmd.com/read/29334661/altered-expression-of-il-1%C3%AE-il-1ri-il-1rii-il-1ra-and-il-4-could-contribute-to-anovulation-and-follicular-persistence-in-cattle
#1
A F Stassi, M E Baravalle, E M Belotti, A N Amweg, E Angeli, M M L Velázquez, F Rey, N R Salvetti, H H Ortega
Cystic ovarian disease (COD) is an important cause of infertility in dairy cattle. The main signs of this infertility are ovulation failure and follicular persistence. The aim of this study was to examine the expression of the cytokines IL-1β, IL-1RI, IL-1RII, IL-1RA and IL-4 in ovarian follicular structures at different times of persistence in a model of follicular persistence induced by prolonged administration of progesterone in dairy cows. Protein expression of IL-1β, IL-1RI, IL-1RII, IL-1RA and IL-4 was evaluated by immunohistochemistry...
January 3, 2018: Theriogenology
https://www.readbyqxmd.com/read/29330967/the-impact-of-bisphenol-s-on-bovine-granulosa-and-theca-cells
#2
K A Campen, M Lavallee, Cmh Combelles
Bisphenol S (BPS) is an endocrine-disrupting chemical with multiple potential mechanisms of action, including as an oestrogen receptor agonist. BPS is increasingly used in plastics and thermal receipts as a substitute for bisphenol A, which has been phased out due to concerns about human health implications. The ability of BPS to alter female reproductive function in mammals has not been widely studied, despite the importance of normal hormone signalling for female reproduction. The aim of this study was to investigate how BPS (in a wide range of doses, including very low doses) affects granulosa cell and theca cell steroid hormone production and cell viability in the bovine...
January 12, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29321934/an-elderly-woman-with-a-mediastinal-granulosa-cell-tumour-a-rare-presentation
#3
Garrett M Harp, Gregory N Matwiyoff, Steven J Escobar, Keith E Thompson, Addie Alkhas, Alfredo R Ramirez
Mediastinal lesions occur in a wide variety of clinical conditions. Metastatic granulosa cell tumour (GCT) in the mediastinum is a rare occurrence. We report a case of a woman who had a metastatic (GCT) in her mediastinum 40 years after treatment of the initial neoplasm. Surgical resection of the mediastinal mass revealed a low-grade epithelioid neoplasm with coffee bean-shaped nuclei and immunohistochemical stains that were consistent with metastatic GCT.
February 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29319157/mir-181b-induced-smad7-downregulation-controls-granulosa-cell-apoptosis-through-tgf-%C3%AE-signaling-by-interacting-with-the-tgfbr1-promoter
#4
Wang Yao, Zengxiang Pan, Xing Du, Jinbi Zhang, Qifa Li
SMAD7 disrupts the TGF-β signaling pathway by influencing TGFBR1 stability and by blocking the binding of TGFBR1 to SMAD2/3. In this study, we showed that SMAD7 attenuated the TGF-β signaling pathway in ovarian granulosa cells (GCs) by regulating TGFBR1 transcriptional activity. To function as a transcription factor, SMAD7 downregulated the mRNA levels of TGFBR1 via direct binding to the SMAD-binding elements (SBEs) within the promoter region of pig TGFBR1. We also showed that SMAD7 enhanced porcine GC apoptosis by interrupting TGFBR1 and the TGF-β signaling pathway...
January 10, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29312650/nanoparticles-and-female-reproductive-system-how-do-nanoparticles-affect-oogenesis-and-embryonic-development
#5
REVIEW
Cong-Cong Hou, Jun-Quan Zhu
Along with the increasing application of nanoparticles (NPs) in many walks of life, environmental exposure to NPs has raised considerable health concerns. When NPs enter a pregnant woman's body through inhalation, venous injection, ingestion or skin permeation, maternal toxic stress reactions such as reactive oxygen species (ROS), inflammation, apoptosis and endocrine dyscrasia are induced in different organs, particularly in the reproductive organs. Recent studies have shown that NPs disturb the developing oocyte by invading the protective barrier of theca cells, granulosa cell layers and zona pellucida...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29308622/epigenetic-aberration-of-fmr1-gene-in-infertile-women-with-diminished-ovarian-reserve
#6
Hossein Eslami, Ali Eslami, Raha Favaedi, Ummolbanin Asadpour, Shabnam Zari Moradi, Poopak Eftekhari-Yazdi, Tahereh Madani, Maryam Shahhoseini, Anahita Mohseni Meybodi
OBJECTIVES: The diminished ovarian reserve (DOR) is a condition characterized by a reduction in the number and/or quality of oocytes. This primary infertility disorder is usually accompanied with an increase in the follicle-stimulating hormone (FSH) levels and regular menses. Although there are many factors contributing to the DOR situation, it is likely that many of idiopathic cases have genetic/epigenetic bases. The association between the FMR1 premutation (50-200 CGG repeats) and the premature ovarian failure (POF) suggests that epigenetic disorders of FMR1 can act as a risk factor for the DOR as well...
April 2018: Cell Journal
https://www.readbyqxmd.com/read/29306259/effects-of-n-acetylcysteine-on-ovarian-tissue-autografted-intogranulation-tissue-compared-to-back-muscle-in-rats
#7
Farideh Danehpoya, Mojtaba Karimipour, Masoumeh Zirak Javanmard, Bagher Pourheydar
Background/aim: Ovarian transplantation can preserve fertility in cancer patients. The aim of this study was to compare ovarian transplantation into granulation tissue (GT) versus back muscle (BM) sites and also to investigate the effects of N-acetylcysteine (NAC) as an antioxidant on ovarian survival in a rat autograft model.Materials and methods: Twenty-eight adult female rats were divided into four equal groups (n = 7 each) as follows: Group 1, ovarian tissue grafted into GT + saline (GT + saline); Group 2, ovarian tissue grafted into GT + NAC (GT + NAC); Group 3, ovarian tissue grafted into BM + saline (BM + saline); and Group 4, ovarian tissue grafted into BM + NAC (BM + NAC)...
December 19, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29301980/mir-210-and-gpd1l-regulate-edn2-in-primary-and-immortalized-human-granulosa-lutein-cells
#8
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/29300939/cgmp-pkg-i-pathway-mediated-glut1-4-regulation-by-no-nitric-oxide-in-female-rat-granulosa-cells
#9
Ye Tian, Dai Heng, Kaili Xu, Wenbo Liu, Xuechun Weng, Xusong Hu, Cheng Zhang
Nitric oxide (NO) is a multifunctional gaseous molecule that plays important roles in mammalian reproductive functions including follicular growth and development. Although our previous study showed that NO mediated 3,5,3'-triiodothyronine (T3) and follicle-stimulating hormone (FSH)-induced granulosa cell development via upregulation of GLUT1 (glucose transporter protein ) and GLUT4 in granulosa cells, little is known about the precise mechanisms regulating ovarian development via glucose. The objective of the present study was to determine the cellular and molecular mechanism by which NO regulates GLUT expression and glucose uptake in granulosa cells...
December 28, 2017: Endocrinology
https://www.readbyqxmd.com/read/29299255/evolution-of-a-complex-phenotype-with-biphasic-ontogeny-contribution-of-development-versus-function-and-climatic-variation-to-skull-modularity-in-toads
#10
Monique Nouailhetas Simon, Gabriel Marroig
The theory of morphological integration and modularity predicts that if functional correlations among traits are relevant to mean population fitness, the genetic basis of development will be molded by stabilizing selection to match functional patterns. Yet, how much functional interactions actually shape the fitness landscape is still an open question. We used the anuran skull as a model of a complex phenotype for which we can separate developmental and functional modularity. We hypothesized that functional modularity associated to functional demands of the adult skull would overcome developmental modularity associated to bone origin at the larval phase because metamorphosis would erase the developmental signal...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29299127/adverse-stimulation-of-4-nonylphenol-in-abnormal-reproductive-organs-of-female-chickens
#11
Fenghua Zhang, Peng Yang, Lei Qin, Jie Zhang
4-Nonylphenol (4-NP) is a known endocrine disrupting chemical and a persistent environmental contaminant. However, the 4-NP caused mechanism of reproductive toxicity still remains largely unknown in birds. In this study, female chickens (Hy-Line Variety White) were dosed via oral gavage in the early laying period with 0, 50, 100, and 200 mg 4-NP/kg/d for 60 days. Food intake and weight increase were monitored in this organism to investigate chicken growth and development. Moreover, pathological changes of reproductive organs, serum hormone, and mRNA changes on the HPOA were detected...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29297778/chronic-cholestasis-is-associated-with-hypogonadism-and-premature-ovarian-failure-in-adult-rats-cholestasis-causes-ovarian-hypogonadism
#12
Yomna I Mahmoud
Hypogonadism is a well-known complication in males with chronic liver diseases. However, the consequences of chronic hepatopathies on female reproductive capacities have received relatively little attention. The present study evaluates the effect of chronic obstructive jaundice on the ovary of adult cycling rats. Estrous cyclicity was monitored to check the functional status of the hypothalamic-pituitary-ovarian axis. Ovarian changes were assessed using histomorphometric, immunohistochemical, and ultrastructural techniques...
January 2018: Ultrastructural Pathology
https://www.readbyqxmd.com/read/29290327/-the-value-of-immunohistochemistry-using-smarca4-brg1-in-the-diagnosis-of-small-cell-ovarian-carcinoma-hypercalcemic-type-a-report-of-two-cases
#13
Gema Ruiz-García, M Amparo Torroba-Carón, Belén Ferri-Ñíguez, Miriam Lencina-Guardiola, Francisco García-Molina, Enrique Martínez-Barba
Small cell carcinoma of ovary-hypercalcemic type is an undifferentiated carcinoma. We describe two cases in women aged 32 and 29. Both presented with large masses and complete surgical extirpation was impossible. Histologically, the images were similar, with diffuse cell proliferation, accompanied by the presence of follicle-like spaces. In both cases it was necessary to make a differential diagnosis with entities such as adult or juvenile granulosa cell tumour, small cell carcinoma of pulmonary type, dysgerminoma and even peripheral neuroectodermal tumour...
January 2018: Revista Española de Patología
https://www.readbyqxmd.com/read/29286463/in-vitro-growth-of-mouse-preantral-follicles-under-simulated-microgravity
#14
Shen Zhang, Yonggen Wu, Yimin Weng, Zhihui Xu, Wenmin Chen, Dahan Zheng, Wei Lin, Jun Liu, Ying Zhou
14 day-old mouse ovarian tissue and preantral follicles isolated from same-aged mice were incubated in a simulated microgravity culture system. We quantitatively assessed follicle survival, measured follicle and oocyte diameters, and examined ultrastructure of the oocytes produced from the system. We observed decreased follicle survival, downregulation of expressions of proliferating cell nuclear antigen and growth differentiation factor 9, as indicators for the development of granulosa cells and oocytes, respectively, and oocyte ultrastructural abnormalities under the simulated microgravity condition...
December 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29275930/ovarian-sex-cord-stromal-tumours-an-update-in-recent-molecular-advances
#15
REVIEW
Diana Lim, Esther Oliva
Sex cord-stromal tumours (SCSTs) consist of a heterogeneous group of neoplasms with diverse clinicopathological features and biological behaviour. They often present as a diagnostic challenge as they have varied and occasionally overlapping histomorphology and some may even mimic non-SCSTs. An accurate diagnosis is important for therapeutic and prognostic purposes. The use of a panel of immunohistochemical markers which are sensitive and specific for sex cord-stromal differentiation such as α-inhibin, calretinin, SF-1 and FOXL2, may be helpful in confirming the cellular lineage of these tumours, but is of limited utility in distinguishing between the different tumour types within this category...
December 21, 2017: Pathology
https://www.readbyqxmd.com/read/29275592/-the-effect-of-follicular-fluid-from-patients-with-endometriosis-follicle-stimulating-hormone-and-bone-morphogenetic-protein-15-on-the-proliferation-and-progesterone-secretion-of-granular-cells
#16
X F Wang, X N Lin, Y D Dai, X Lin, H M Lü, F Zhou, S Y Zhang
Objective: The study was designed to evaluate the effect of follicular fluid from patients with endometriosis, follicle stimulating hormone (FSH), bone morphogenetic protein 15 (BMP-15) on the proliferation and progesterone secretion of human luteinized granular cells in vitro. Methods: Cumulus granulosa cells were collected from the patients who underwent in vitro fertilization and embryo transfer (IVF-ET) ovulation due to tubal or male factor infertility on the day of the retrieval. The cells in the control group were cultured with complete medium of DMEM/F-12, an extra of FSH at a dose of 12 μg/L was added in the FSH group, an extra of BMP-15 at a dose of 6 μg/L was added to the BMP-15 group, an extra of 5% of the follicular fluid from the patients with tubal or male factor infertility was added to the tubal group, an extra of 5% of the follicular fluid from the patients with endometriosis infertility was added to the endometriosis group, an extra of 5% of the follicular fluid from the patients with endometriosis infertility plus FSH at a dose of 12 μg/L were added to the endometriosis plus FSH group, and an extra of 5% of the follicular fluid from the patients with endometriosis infertility plus BMP-15 at a dose of 6 μg/L were added to the endometriosis plus BMP-15 group...
December 5, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29275192/detection-of-aristaless-related-homeobox-protein-in-ovarian-sex-cord-stromal-tumors
#17
Tamara Knific, Snježana Frković Grazio, Tea Lanišnik Rižner
OBJECTIVE: To examine the potential of ARX as a novel biomarker of ovarian endometriosis and other ovarian pathologies. METHODS: The mRNA level of ARX in ovarian endometriosis and normal endometrium samples was determined by real-time PCR, while the protein level was determined by Western blotting and immunohistochemical staining. Immunohistochemical analysis was performed on nearly 200 tissue samples of different ovarian pathologies. GraphPad Prism was used for statistical analysis...
December 21, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29262378/occurrence-of-sulfonated-steroids-and-ovarian-expression-of-steroid-sulfatase-and-sult1e1-in-cyclic-cows
#18
Carina Blaschka, Gerhard Schuler, Alberto Sánchez-Guijo, Bettina Zimmer, Sabine Feller, Franziska Kotarski, Stefan A Wudy, Christine Wrenzycki
Historically sulfonated steroids were primarily considered as inactive metabolites destined for elimination. However, more recently they have been increasingly recognized as precursors for the production of bioactive steroids in target tissues and as functional molecules without preceding hydrolysis. In order to comprehensively characterize their occurrence in cyclic cows and their formation and hydrolysis in bovine ovarian steroidogenesis, ovaries from cyclic cows were screened for the expression of oestrogen sulfotransferase (SULTE1) and steroid sulfatase (STS) by Western blot and immunohistochemistry...
December 17, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29261327/ovarian-steroid-hormone-secretion-activity-examined-after-supplementation-of-green-tea-extract
#19
S Roychoudhury, M Halenar, V Tupa, K Michalcova, S Nath, M Kacaniova, A Kolesarova
This study aimed at examining the secretion activity of steroid hormones progesterone and 17beta-estradiol by porcine ovarian granulosa cells after addition of green tea extract. Granulosa cells were incubated with green tea extract (at doses of 0.01, 0.1, 1, 10 and 100 microg.ml(-1). Another set of cells were incubated with green tea extract at the above doses along with additional supplementation of follicle stimulating hormone (FSH) at 10 microg.ml(-1). Release of hormones by granulosa cells was assessed by EIA after 24 h exposure...
December 20, 2017: Physiological Research
https://www.readbyqxmd.com/read/29260383/oxidative-stress-in-granulosa-cells-contributes-to-poor-oocyte-quality-and-ivf-et-outcomes-in-women-with-polycystic-ovary-syndrome
#20
Qiaohong Lai, Wenpei Xiang, Qing Li, Hanwang Zhang, Yufeng Li, Guijin Zhu, Chengliang Xiong, Lei Jin
The increased levels of intracellular reactive oxygen species (ROS) in granulosa cells (GCs) may affect the pregnancy results in women with polycystic ovary syndrome (PCOS). In this study, we compared the in vitro fertilization and embryo transfer (IVF-ET) results of 22 patients with PCOS and 25 patients with tubal factor infertility and detected the ROS levels in the GCs of these two groups. Results showed that the PCOS group had significantly larger follicles on the administration day for human chorionic gonadotropin than the tubal factor group (P < 0...
December 19, 2017: Frontiers of Medicine
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