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https://www.readbyqxmd.com/read/29523268/the-reduction-in-circulating-levels-of-estrogen-and-progesterone-in-women-with-preeclampsia
#1
Jiayi Wan, Zheng Hu, Ke Zeng, Yongxiang Yin, Min Zhao, Miaoxin Chen, Qi Chen
Abnormalities in the development of placental vasculature in early pregnancy and the failure of transformation of the spiral arteries are associated with the pathogenesis of preeclampsia. Sex hormones influence neovascularisation during pregnancy. However the profiling of estrogen and progesterone in preeclampsia is controversial. In this study we investigated the serum levels of estrogen and progesterone in women with preeclampsia. Blood samples were collected from 86 preeclamptic and 97 gestation-matched normotensive pregnancies...
January 2018: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29501074/placental-mitochondrial-biogenesis-and-function-was-slightly-changed-by-gestational-hypercholesterolemia-in-full-term-pregnant-women
#2
Z-Y Le, S Dong, R Zhang, X-P Cai, A Gao, R Xiao, H-L Yu
It was reported that high blood cholesterol levels increased the susceptibility to mitochondrial dysfunction. This study hypothesized that the gestational hypercholesterolemia (HC) could induce the mitochondrial dysfunction in term human placenta. The eligible pregnant women were recruited from Xuanwu Hospital in Beijing during their first prenatal visit (before their 10th week of pregnancy). In total, 19 pregnant women whose serum total cholesterol levels were higher than 7.25 mm at third trimester (measured at 36-38 weeks) were selected as gestational HC...
March 4, 2018: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29474975/profile-of-cyp19a1-mrna-expression-and-aromatase-activity-during-syncytialization-of-primary-human-villous-trophoblast-cells-at-term
#3
Andrée-Anne Hudon Thibeault, Cathy Vaillancourt, J Thomas Sanderson
Estrogen production by the human villous trophoblast is dependent on the biosynthetic enzyme aromatase (CYP19; CYP19A1) and is crucial for successful placental development and pregnancy outcome. Using villous cytotrophoblast cells (vCTs) freshly isolated from normal term placenta, we characterized the promoter-specific expression of CYP19A1 mRNA (derived from promoters I.1, I.4, I.8 or total transcript) and aromatase activity during villous trophoblast syncytialization. CYP19A1 mRNA levels and aromatase activity in vCTs reached a maximum after about 48 h of culture...
February 20, 2018: Biochimie
https://www.readbyqxmd.com/read/29436602/the-expression-and-activation-of-sex-steroid-receptors-in-the-preeclamptic-placenta
#4
Mee-Na Park, Kyung-Hee Park, Jae-Eon Lee, Ye Young Shin, Sung-Min An, Seong Soo Kang, Wan-Seob Cho, Beum-Soo An, Seung Chul Kim
Estrogen and progesterone are the main pregnancy hormones produced by the placenta. It is well understood that estrogen stimulates angiogenesis in the uterus during the reproductive cycle. Although the estrogen and progesterone signaling pathways are assumed to be associated with placental vascularization and preeclampsia, expression of estrogen receptors (ESRs) and progesterone receptor (PGR) in the placenta have not been well studied. The present study examined the expression patterns of steroid hormone receptors in placentas...
February 8, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29429410/the-human-fetal-adrenal-produces-cortisol-but-no-detectable-aldosterone-throughout-the-second-trimester
#5
Zoe C Johnston, Michelle Bellingham, Panagiotis Filis, Ugo Soffientini, Denise Hough, Siladitya Bhattacharya, Marc Simard, Geoffrey L Hammond, Peter King, Peter J O'Shaughnessy, Paul A Fowler
BACKGROUND: Human fetal adrenal glands are highly active and, with the placenta, regulate circulating progesterone, estrogen and corticosteroids in the fetus. At birth the adrenals are essential for neonate salt retention through secretion of aldosterone, while adequate glucocorticoids are required to prevent adrenal insufficiency. The objective of this study was to carry out the first comprehensive analysis of adrenal steroid levels and steroidogenic enzyme expression in normal second trimester human fetuses...
February 12, 2018: BMC Medicine
https://www.readbyqxmd.com/read/29386068/effects-of-hpmscs-on-granulosa-cell-apoptosis-and-amh-expression-and-their-role-in-the-restoration-of-ovary-function-in-premature-ovarian-failure-mice
#6
Hongqin Zhang, Qianqian Luo, Xueyan Lu, Na Yin, Dongli Zhou, Lianshuang Zhang, Wei Zhao, Dong Wang, Pengchao Du, Yun Hou, Yan Zhang, Wendan Yuan
BACKGROUND: This study was performed to determine the effects of human placenta mesenchymal stem cell (hPMSC) transplantation on granulosa cell apoptosis and anti-Müllerian hormone (AMH) and follicle-stimulating hormone receptor (FSHR) expression in autoimmune drug-induced premature ovarian failure (POF) mice. The aim of this research is to investigate the mechanisms of hPMSCs on ovarian reserve capacity. METHODS: The POF mice model was established by injection of zona pellucida 3 peptide (pZP3)...
January 31, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29385440/11%C3%AE-hsd-1-in-human-fetal-membranes-as-a-potential-therapeutic-target-for-preterm-birth
#7
Wangsheng Wang, Zi-Jiang Chen, Leslie Myatt, Kang Sun
Human parturition is a complex process involving interactions between the myometrium and signals derived from the placenta, fetal membranes and fetus. Signals originating from fetal membranes are crucial components that trigger parturition, which is clearly illustrated by the labor-initiating consequence of membrane rupture. It has been recognized for a long time that among fetal tissues in late gestation the fetal membranes possess the highest capacity for cortisol regeneration by 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1)...
January 29, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29345032/mirna-320a-inhibits-trophoblast-cell-invasion-by-targeting-estrogen-related-receptor-gamma
#8
Tian Gao, Mou Deng, Qian Wang
AIM: MicroRNAs (miRs) play an essential role in the modulation of trophoblast function. We explored miR-320a expression in the human placenta. In addition, we report the promising effect and target functional loop of miR-320a in trophoblasts. METHODS: MiR-320a expression was investigated in both pre-eclamptic and healthy placenta tissues by quantitative real time-polymerase chain reaction to determine how miR-320a affected invasion, proliferation and migration in trophoblasts...
January 18, 2018: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29236987/extra-gonadal-actions-of-fsh-a-critical-need-for-novel-genetic-models
#9
T Rajendra Kumar
Follicle-stimulating hormone (FSH) is critical for ovarian folliculogenesis and essential for female fertility. FSH binds to FSH receptors (FSHRs) and regulates estrogen production in ovarian granulosa cells to orchestrate female reproductive physiology. Ovarian senescence that occurs as a function of aging results in loss of estrogen production and this is believed to be the major reason for bone loss in postmenopausal women. Although conflicting, studies in rodents and humans during the last decade provide genetic, pharmacological and physiological evidence that elevated FSH levels that occur in the face of normal or declining estrogen levels directly regulate bone mass and adiposity...
December 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/29228121/low-dose-bisphenol-a-activates-the-erk-signaling-pathway-and-attenuates-steroidogenic-gene-expression-in-human-placental-cells
#10
Po-Wei Chu, Zhi-Jie Yang, Hui-Hsin Huang, Ai-An Chang, Yu-Chen Cheng, Gwo-Jang Wu, Hsin-Chieh Lan
Bisphenol A (BPA) is an industrial material used for many plastic products and is considered an endocrine disruptor. BPA can be released into the environment and can spread through the food chain. It is well known that BPA exposure leads to lesions, especially in the reproductive system. According to previous studies, BPA reduces newborn numbers in pregnant mice and affects placentation. The placenta is a special endocrine organ during pregnancy. It secretes important hormones, such as progesterone and estrogen, to maintain gestation...
February 1, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29212380/%C3%AE-v%C3%AE-3-integrin-and-fibronectin-expressions-and-their-relation-to-estrogen-and-progesterone-during-placentation-in-swine
#11
C Vélez, C Barbeito, M Koncurat
Mammalian pregnancy requires specific interactions between the conceptus and its mother that involve the endocrine system and adhesion molecules. The relation between adhesion molecules and their ligands at the fetal-maternal interface is crucial for developing a successful implantation. Progesterone (P4) and estrogen (E2) secreted by the porcine conceptus are required for the relation to be established. We investigated the expression of αvβ3 integrin and its ligand, fibronectin (FN), at the placental interface, and E2 and P4 concentrations in both serum and maternal and fetal placental extracts during placentation in swine...
December 7, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/29207177/regulation-of-steroid-hormones-in-the-placenta-and-serum-of-women-with-preeclampsia
#12
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...
February 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29181440/influence-of-dexamethasone-on-some-reproductive-hormones-and-uterine-progesterone-receptor-localization-in-pregnant-yankasa-sheep-in-semiarid-zones-of-nigeria
#13
Dauda Yahi, Nicholas Adetayo Ojo, Gideon Dauda Mshelia
Dexamethasone is widely used in both veterinary and human medical practices. However, it seems to cause some deleterious effects on pregnancy probably by causing changes in the reproductive hormone levels and their corresponding receptor concentrations. This study investigated the effects of dexamethasone on these parameters. Twenty healthy adult Yankasa sheep comprising 18 ewes and 2 rams were used for this study. Pregnancies were achieved by natural mating after estrus synchronization. Dexamethasone was administered at 0...
2017: Journal of Veterinary Medicine
https://www.readbyqxmd.com/read/29151792/fluoxetine-modulates-sex-steroid-levels-in-vitro
#14
Diana Lupu, Marcus O D Sjödin, Mukesh Varshney, Johan Lindberg, Felicia Loghin, Joëlle Rüegg
Background and aims: Selective serotonin reuptake inhibitors (SSRIs) are antidepressants increasingly prescribed against depression during and after pregnancy. However, these compounds cross the placenta and are found in breast milk, thus reaching, and possibly affecting, the fetus and infant during critical developmental stages. Fluoxetine (FLX), a widely used SSRI, can interfere with estrogen signaling, which is important for the development of female sex organs and certain brain areas, among others...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29066529/steroidogenic-enzyme-activities-in-the-pre-and-post-parturient-equine-placenta
#15
Erin L Legacki, C Jo Corbin, Barry A Ball, Kirsten E Scoggin, Scott D Stanley, Alan J Conley
Steroidogenic enzymes in placentas shape steroid hormone profiles in the maternal circulation of each mammalian species. These include 3β-hydroxysteroid dehydrogenase/Δ5-4 isomerase (3βHSD) and 17α-hydroxylase/17,20-lyase cytochrome P450 (P450c17) crucial for progesterone and androgen synthesis, respectively, as well as aromatase cytochrome P450 (P450arom) that converts Δ4-androgens to estrogens. 5α-reductase is another important enzyme in equine placentas because 5α-dihydroprogesterone (DHP) sustains pregnancy in the absence of progesterone in the second half of equine pregnancy...
January 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29061543/peroxisome-proliferator-activated-receptor-gamma-in-human-placenta-may-mediate-the-adverse-effects-of-phthalates-exposure-in-pregnancy
#16
Yujing Huang, Jose M Garcia, Weiqun Shu, Honghui Rong, Lin Zhang, Yanzhou Wang, Yao Tan, Hui Lin, Hui Zeng, Ji-An Chen
Peroxisome-proliferator activated receptor gamma (PPARG) in placenta play an important role in pregnancy. Our previous study showed that it mediated the effects of phthalates on placental mRNA expression of estrogen synthetases in rats. To assess the effects of phthalate exposure on PPARG placental expression, and the contribution of PPARG to the effects of phthalates in human. 207 healthy pregnant women were recruited and their cord blood and placenta were collected upon delivery. Three phthalates, estrogens in cord blood and protein expression of PPARG in placenta were measured...
January 2018: Reproductive Toxicology
https://www.readbyqxmd.com/read/29052908/hbxag-suppresses-cell-apoptosis-and-promotes-the-secretion-of-placental-hormones-in-human-placental-trophoblasts-via-activation-of-the-egfr-akt-pathway
#17
Weimin Wang, Guiqin Bai, Yuting Zhang, Ting Zhang, Chen Li, Yongxing Yuan, Sixue Liu, Caili Wang
The aim of this study is to investigate the role of Hepatitis B virus x (HBx) in the growth and secretion of human placental trophoblasts. Firstly, placenta tissues were collected from pregnant HBV carriers with various viral loads. The results of immunohistochemical technique showed that the HBx protein and pEGFR protein levels were both markedly increased with the viral load elevation. Then, a placental trophoblast cell strain (JEG-3-HBx), which stably expressed HBx mRNA and protein, was established with the pcDNA-HBx transfection followed by the G418 selection...
February 2018: Cell Biology International
https://www.readbyqxmd.com/read/29040188/phagocytosis-of-extracellular-vesicles-extruded-from-the-placenta-by-ovarian-cancer-cells-inhibits-growth-of-the-cancer-cells
#18
Qi Chen, Victoria Rutten, Wei-Tzu Cheng, Mancy Tong, Jia Wei, Peter Stone, Lai-Ming Ching, Lawrence W Chamley
OBJECTIVE: Ovarian cancer is a common gynecological cancer, and parity is negatively associated with the incidence of this disease. This negative association is hypothesized to be due in part to shifting the balance of estrogen and progesterone toward more progesterone and reduced ovulation during pregnancy. However, studies suggested that parity is also associated with estrogen-independent gynecological cancers suggesting balance of hormones may not be the only protective factor. Extracellular vesicles (EVs) play an important role in cell-to-cell communication in physiological and pathological conditions...
October 17, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29018059/involvement-of-leptin-in-the-molecular-physiology-of-the-placenta
#19
REVIEW
Malena Schanton, Julieta L Maymó, Antonio Pérez-Pérez, Víctor Sánchez-Margalet, Cecilia L Varone
Leptin is a homeostatic regulator in the placenta where it promotes proliferation, protein synthesis and the expression of tolerogenic maternal response molecules such as HLA-G. Leptin also exerts an anti-apoptotic action in placenta controlling the expression of p53 master cell cycle regulator under different stress conditions. On the other hand, leptin is an integrative target of different placental stimuli. The expression of leptin in placenta is regulated by hCG, insulin, steroids, hypoxia and many other growth hormones, suggesting that it might have an important endocrine function in the trophoblastic cells...
January 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28965292/co-culture-of-jeg-3-bewo-and-syncbewo-cell-lines-with-adrenal-h295r-cell-line-an-alternative-model-for-examining-endocrine-and-metabolic-properties-of-the-fetoplacental-unit
#20
Eliza Drwal, Agnieszka Rak, Ewa Gregoraszczuk
Monocultures of different placental cells are used for many physiological and toxicological studies; however, they are not a true reflection of the interaction between placenta and fetus. To develop the most appropriate model to study endocrine and metabolic properties of fetoplacental unit we used three co-culture models of placental cells nonfusogenic JEG-3, unsyncytialised BeWo (BeWo) and syncytialised BeWo (syncBeWo) cultured with adrenal (H295R) cells. As an end point of endocrine properties we investigated steroids receptors expression and steroid secretion, while as metabolic properties AhR, CYP1A1and COMT expression...
September 30, 2017: Cytotechnology
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