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Granulosa theca cell

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https://www.readbyqxmd.com/read/28319575/foxl2-mutation-status-in-granulosa-theca-cell-tumors-of-the-ovary
#1
Amber Nolan, Nancy M Joseph, Ankur R Sangoi, Joseph Rabban, Charles Zaloudek, Karuna Garg
Ovarian sex-cord stromal tumors that have between 10% and 50% granulosa cells in a prominent fibrothecomatous background have been referred to as granulosa theca cell tumors or mixed granulosa theca cell tumors. The classification and prognosis of these tumors is not clear. Most adult granulosa cell tumors of the ovary harbor a mutation in the FOXL2 gene, whereas fibromas and thecomas lack this mutation. The aim of our study was to assess the FOXL2 mutation status of ovarian granulosa theca cell tumors and to correlate the mutation status with morphologic and clinical characteristics...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28315656/expression-of-odc1-spd-spm-and-azin1-in-the-hypothalamus-ovary-and-uterus-during-rat-estrous-cycle
#2
Joseph R D Fernandes, Sammit Jain, Arnab Banerjee
The aim of the present study was to investigate variation in the expression pattern of ornithine decarboxylase (ODC1), spermine (SPM), spermidine (SPD) and antizyme inhibitor (AZIN1) in hypothalamus, ovary and uterus during the estrous cycle of rats. Further, to understand any correlation between polyamines and GnRH I expression in hypothalamus; effect of putrescine treatment on GnRH I expression in hypothalamus and progesterone and estradiol levels in serum were investigated. The study also aims in quantifying all the immunohistochemistry images obtained based on pixel counting algorithm to yield the relative pixel count...
March 15, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28299992/developmental-programming
#3
Muraly Puttabyatappa, Ashleigh Irwin, Jacob D Martin, Makeda Mesquitta, Almudena Veiga-Lopez, Vasantha Padmanabhan
Prenatal testosterone (T)-treated sheep, similar to women with polycystic ovary syndrome (PCOS), manifests reproductive defects that include multifollicular ovarian phenotype. Women with PCOS manifest increased ovarian matrix metalloproteinases (MMPs) activity. We tested the hypothesis that gestational T excess in sheep would alter ovarian expression of MMPs, tissue inhibitors of MMP (TIMP) and their target proteins laminin B (LAMB), collagen, tumor necrosis factor alpha (TNF), and connexin 43 (GJA1) consistent with increased MMP activity and that these changes are developmentally regulated...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28282394/transcriptomal-profiling-of-bovine-ovarian-granulosa-and-theca-interna-cells-in-primary-culture-in-comparison-with-their-in-vivo-counterparts
#4
Nicholas Hatzirodos, Claire Glister, Katja Hummitzsch, Helen F Irving-Rodgers, Philip G Knight, Raymond J Rodgers
In vitro culture of ovarian granulosa cells and theca cells has been very important for our understanding of their function and regulation. One of the most eagerly sought attributes of cell culture is the use of chemically-defined conditions. However, even under such in vitro conditions cell behaviour could differ from the in vivo situation because of differences in oxygen tension, nutrients, adhesion matrix and other factors. To examine this further we compared the transcriptomes of both granulosa cells and cells from the theca interna that were cultured in what are arguably the best in vitro conditions for maintaining the 'follicular' phenotypes of both tissue types, as displayed by their respective freshly-isolated counterparts...
2017: PloS One
https://www.readbyqxmd.com/read/28250234/apelin-apln-regulates-progesterone-secretion-and-oocyte-maturation-in-bovine-ovarian-cells
#5
Jennifer Roche, Christelle Ramé, Maxime Reverchon, Namya Mellouk, Agnieska Rak, Pascal Froment, Joëlle Dupont
APLN and its G-protein coupled receptor APLNR are expressed in the bovine ovary. However, their role in granulosa cells and oocytes is unknown. Here, we studied their expression in bovine ovarian cells and investigated their regulation in cultured luteinizing granulosa cells in response to IGF1 and FSH. We determined the effect and the molecular mechanism of APLN (isoforms 17 and 13) on bovine granulosa cell progesterone secretion and on oocyte maturation. By RT-qPCR and immunoblot, we showed that the expression of both APLN and APLNR in granulosa and oocytes significantly increased with ovarian follicles size whereas it was similar in theca interstitial cells...
March 1, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28107515/regulatory-mechanisms-underlying-the-expression-of-prolactin-receptor-in-chicken-granulosa-cells
#6
Shenqiang Hu, Raj Duggavathi, David Zadworny
Prolactin (PRL) has both pro- and anti-gonadal roles in the regulation of avian ovarian functions through its interaction with the receptor (PRLR). However, neither the pattern of expression of PRLR nor its regulatory mechanisms during follicle development have been clearly defined. The objective of the present study was to investigate mechanisms of PRLR expression in chicken granulosa cells. Levels of PRLR transcript were highest in the stroma and walls of follicles < 2 mm in diameter and progressively declined with the maturation of follicles...
2017: PloS One
https://www.readbyqxmd.com/read/28078843/association-between-expression-of-cumulus-expansion-markers-and-real-time-proliferation-of-porcine-follicular-granulosa-cells-in-a-primary-cell-culture-model
#7
S Ciesiółka, J Budna, A Bryja, W Kranc, A Chachuła, M Dyszkiewicz-Konwińska, H Piotrowska, D Bukowska, P Antosik, M Bruska, K P Brüssow, M Nowicki, M Zabel, B Kempisty
Folliculogenesis is a compound process that involves both ovarian follicle growth and oocyte development, which is tightly attached to the follicular wall. During this process, cells that form the follicle structure undergo substantial morphological and molecular modifications that finally lead to differentiation and specialization of ovarian follicular cells. The differentiation of ovarian cells encompasses formation of follicle, which is composed of theca (TCs), mural granulosa (GCs), and cumulus cells (CCs)...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28069904/detection-and-activity-of-11-beta-hydroxylase-cyp11b1-in-the-bovine-ovary
#8
Ayelen N Amweg, Fernanda Mariel Rodriguez, Emilia Huber, Belkis E Marelli, Natalia Gareis, Eduardo M Belotti, Florencia Rey, Natalia Raquel Salvetti, Hugo H Ortega
Glucocorticoids (GCs) such as cortisol and corticosterone are important steroid hormones with different functions in intermediate metabolism, development, cell differentiation, immune response and reproduction. In response to physiological and immunological stress, adrenocorticotropic hormone (ACTH) acts on the adrenal gland by stimulating synthesis and secretion of GCs. However, there is increasing evidence that GCs may also be synthesized by extra-adrenal tissues. Here, we examined the gene and protein expression of the enzyme 11β-hydroxylase P450c11 (CYP11B1), involved in the conversion of 11-deoxycortisol to cortisol, in the different components of the bovine ovary, and determined the functionality of CYP11B1 in vitro...
January 9, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28018460/unusual-malignant-neoplasms-of-ovary-in-children-two-cases-report
#9
Ali Ghribi, Aicha Bouden, Manef Gasmi, Mourad Hamzaoui
Sex cord tumors with annular tubules are known to originate from the sex cord of embryonic gonads that synthesize Sertoli cells, Leydig cells, granulosa cells, and theca cells of the ovarian stroma, while ovarian small cell carcinoma of the hypercalcemic type is a type of neuroendocrine tumor. Both these tumors are uncommon, potentially malignant neoplasms in children. We report the case of a sex cord tumor with annular tubules in an 11-year-old girl and a case of small cell carcinoma of the hypercalcemic type in a 10-year-old girl...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28004024/transcriptomes-of-bovine-ovarian-follicular-and-luteal-cells
#10
Sarah M Romereim, Adam F Summers, William E Pohlmeier, Pan Zhang, Xiaoying Hou, Heather A Talbott, Robert A Cushman, Jennifer R Wood, John S Davis, Andrea S Cupp
Affymetrix Bovine GeneChip® Gene 1.0 ST Array RNA expression analysis was performed on four somatic ovarian cell types: the granulosa cells (GCs) and theca cells (TCs) of the dominant follicle and the large luteal cells (LLCs) and small luteal cells (SLCs) of the corpus luteum. The normalized linear microarray data was deposited to the NCBI GEO repository (GSE83524). Subsequent ANOVA determined genes that were enriched (≥2 fold more) or decreased (≤-2 fold less) in one cell type compared to all three other cell types, and these analyzed and filtered datasets are presented as tables...
February 2017: Data in Brief
https://www.readbyqxmd.com/read/27917511/evidence-for-direct-effects-of-glyphosate-on-ovarian-function-glyphosate-influences-steroidogenesis-and-proliferation-of-bovine-granulosa-but-not-theca-cells-in-vitro
#11
Maria Chiara Perego, Luis F Schutz, Francesca Caloni, Cristina Cortinovis, Marco Albonico, Leon J Spicer
Glyphosate (GLY) is a common herbicide used worldwide but its effect on ovarian function in mammals is unknown. The aim of this study was to determine the potential endocrine disruptor effects of GLY on ovarian function evaluating cell proliferation, steroidogenesis and gene expression using bovine granulosa cells (GC) and theca cells as in vitro models. GC proliferation was impaired (P < 0.05) after exposure to GLY at 0.5, 1.7 and 5 μg ml(-1) . GC progesterone production was not affected (P ≥ 0...
December 5, 2016: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/27888191/wt1-directs-the-lineage-specification-of-sertoli-and-granulosa-cells-by-repressing-sf1-expression
#12
Min Chen, Lianjun Zhang, Xiuhong Cui, Xiwen Lin, Yaqiong Li, Yaqing Wang, Yanbo Wang, Yan Qin, Dahua Chen, Chunsheng Han, Bin Zhou, Vicki Huff, Fei Gao
Supporting cells (Sertoli and granulosa) and steroidogenic cells (Leydig and theca-interstitium) are two major somatic cell types in mammalian gonads. However, the mechanisms that control their differentiation during gonad development remain elusive. In this study, we found deletion of Wt1 in ovary after sex determination caused ectopic development of steroidogenic cells at embryonic stage. Furthermore, the differentiation of both Sertoli and granulosa cells was blocked when Wt1 was deleted before sex determination and most genital ridge somatic cells differentiated into steroidogenic cells in both male and female gonads...
November 25, 2016: Development
https://www.readbyqxmd.com/read/27872196/induction-of-ectonucleotide-pyrophosphatase-phosphodiesterase-3-during-the-periovulatory-period-in-the-rat-ovary
#13
Fei-Xue Li, Jiao-Jiao Yu, Ying Liu, Xiao-Ping Miao, Thomas E Curry
Ectonucleotide pyrophosphatase/phosphodiesterase 3 (Enpp3) is involved in multiple physiological processes, such as morphological changes and inflammatory processes. The present study investigated the spatiotemporal expression pattern and regulatory mechanisms controlling expression of Enpp3 in the rat ovary during the periovulatory period. Immature female rats were injected with pregnant mare serum gonadotropin to stimulate follicular development. Ovaries, granulosa cells, or theca-interstitial cells were collected at various times after human chorionic gonadotropin (hCG) administration...
November 20, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27842549/acth-induced-stress-in-weaned-sows-impairs-lh-receptor-expression-and-steroidogenesis-capacity-in-the-ovary
#14
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/27821561/the-ovarian-renin-angiotensin-system-ovras-a-major-factor-in-ovarian-function-and-disease
#15
Angela Palumbo, Julio Ávila, Frederick Naftolin
This contribution summarizes the pivotal role of the ovarian renin-angiotensin system (OVRAS) in ovarian physiology and disease, with particular emphasis on human clinical implications and established translational applications. The presence of a complete OVRAS in all studied species has been known for decades. The OVRAS has major effects on follicle development/atresia and ovulation and steroid hormone secretion, that is, it is necessary for normal reproduction. It is well established that OVRAS activity is regulated by gonadotropins and depends on activation of proteases in the area of growing follicles...
December 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27816766/fibroblast-growth-factor-9-fgf9-regulation-of-cyclin-d1-and-cyclin-dependent-kinase-4-in-ovarian-granulosa-and-theca-cells-of-cattle
#16
M L Totty, B C Morrell, L J Spicer
To determine the mechanism by which fibroblast growth factor 9 (FGF9) alters granulosa (GC) and theca (TC) cell proliferation, cell cycle proteins that regulate progression through G1 phase of the cell cycle, cyclin D1 (CCND1) and cyclin-dependent kinase-4 (CDK4; CCND1's catalytic partner), were evaluated. Ovaries were obtained from a local abattoir, GC were harvested from small (1-5 mm) and large (8-22 mm) follicles, and TC were harvested from large follicles. GC and TC were plated in medium containing 10% fetal calf serum followed by various treatments in serum-free medium...
January 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27813674/induction-of-tissue-factor-pathway-inhibitor-2-by-hcg-regulates-periovulatory-gene-expression-and-plasmin-activity
#17
Muraly Puttabyatappa, Linah F Al-Alem, Farnosh Zakerkish, Katherine L Rosewell, Mats Brännström, Thomas E Curry
A key event during the process of ovulation is an increased proteolytic activity that aids in breakdown of the follicular wall to permit oocyte release. How the activity of these proteases is regulated is still not known. We hypothesize that Tissue Factor Pathway Inhibitor 2 (TFPI2), a matrix-associated Kunitz-type serine protease inhibitor, plays a role in regulating proteolytic activity during the periovulatory period as in other tissues. TFPI2 is secreted into the extracellular matrix (ECM) where it is postulated to regulate physiological ECM remodeling...
November 4, 2016: Endocrinology
https://www.readbyqxmd.com/read/27797914/oocyte-somatic-cell-interactions-in-the-human-ovary-novel-role-of-bone-morphogenetic-proteins-and-growth-differentiation-factors
#18
REVIEW
Hsun-Ming Chang, Jie Qiao, Peter C K Leung
BACKGROUND: Initially identified for their capability to induce heterotopic bone formation, bone morphogenetic proteins (BMPs) are multifunctional growth factors that belong to the transforming growth factor β superfamily. Using cellular and molecular genetic approaches, recent studies have implicated intra-ovarian BMPs as potent regulators of ovarian follicular function. The bi-directional communication of oocytes and the surrounding somatic cells is mandatory for normal follicle development and oocyte maturation...
December 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27769286/relationship-between-advanced-glycation-end-products-and-steroidogenesis-in-pcos
#19
REVIEW
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/27763207/potential-use-of-anti-apoptotic-proteins-and-non-coding-rnas-in-in-vitro-follicular-growth-and-ovarian-tissue-engineering
#20
Yoon Kim, Amin Tamadon, Seung-Yup Ku
In vitro culture of ovarian follicles is a promising bioengineering technique for preserving fecundity in reproductive age female by providing fertilizable oocytes. Successful clinical application should be preceded by developing the protocols that can efficiently overcome follicular cell apoptosis since the apoptosis is a critical phenomenon in in vivo folliculogenesis and in in vitro follicular maturation. Numerous pro-survival and anti-apoptotic molecules including follicular developmental regulators have been reported to be involved in the intra-ovarian apoptosis...
October 20, 2016: Tissue Engineering. Part B, Reviews
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