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https://www.readbyqxmd.com/read/29050014/a-real-life-analysis-of-reproductive-outcome-after-fertility-preservation-in-female-cancer-patients
#1
Sofie Hulsbosch, Martin Koskas, Carla Tomassetti, Petra De Sutter, Hans Wildiers, Patrick Neven, Thomas D'Hooghe, Frederic Amant
BACKGROUND: Fertility preservation before or during cancer treatment in young women has become an important health issue because of delayed motherhood and improved survival rates. This study evaluates the necessity and the efficacy of fertility preservation, with a focus on actual pregnancy wish and outcome after fertility preservation and cancer treatment. PATIENTS AND METHODS: All consecutive patients who received fertility preservation in 2 university referral centers before or during cancer treatment were included...
October 20, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/29046155/impact-of-dietary-fats-on-brain-functions
#2
Rosanna Chianese, Roberto Coccurello, Andrea Viggiano, Marika Scafuro, Marco Fiore, Giangennaro Coppola, Francesca Felicia Operto, Silvia Fasano, Sophie Layé, Riccardo Pierantoni, Rosaria Meccariello
Adequate dietary intake and nutritional status have important effects on brain functions and on brain health. Energy intake and specific nutrients excess or deficiency from diet differently affect cognitive processes, emotions, behaviour, neuroendocrine functions and synaptic plasticity with possible protective or detrimental effects on neuronal physiology. Lipids, in particular, play structural and functional roles in neurons. Here the importance of dietary fats and the need to understand the brain mechanisms activated by peripheral and central metabolic sensors...
October 17, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/29045593/a-teleost-androgen-promotes-development-of-primary-ovarian-follicles-in-coho-salmon-and-rapidly-alters-the-ovarian-transcriptome
#3
Christopher Monson, Kristy Forsgren, Giles Goetz, Louisa Harding, Penny Swanson, Graham Young
Recent studies using several teleost models have revealed that androgens increase the size of previtellogenic (primary and/or early secondary) ovarian follicles. To explore our hypothesis that androgens drive the development of primary follicles into early secondary follicles, and to determine the mechanisms underlying these androgenic effects, we exposed juvenile coho salmon to near-physiological and relatively sustained levels of the non-aromatizable androgen 11-ketotestosterone (11-KT). This resulted in significant growth of primary ovarian follicles after 10 and 20 days, with follicles after 20 days displaying a morphological phenotype characteristic of early secondary follicles (presence of cortical alveoli)...
October 13, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29044516/gonadotropin-inhibitory-hormone-in-the-flatfish-solea-senegalensis-molecular-cloning-brain-localization-and-physiological-effects-%C3%A2
#4
María Aliaga-Guerrero, José A Paullada-Salmerón, Vanesa Piquer, Evaristo L Mañanós, José A Muñoz-Cueto
Recently, gonadotropin-inhibitory hormone (GnIH) has emerged as an important regulator of reproduction in birds and mammals. This RFamide neuropeptide has neuromodulatory functions and controls the synthesis and/or release of gonadotropin-releasing hormone (GnRH) and gonadotropins. Although teleosts represent about half of all living vertebrates, scientific and technological advances on the Gnih system in fish are scarce, contradictory and inconclusive. Research on the fish Gnih system appears necessary to better clarify its role in the neuroendocrine and environmental control of vertebrate reproduction...
October 16, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29044511/second-trimester-levels-of-fetoplacental-hormones-among-women-with-placenta-accreta-spectrum-disorders
#5
Marina Pekar-Zlotin, Yaakov Melcer, Ron Maymon, Eric Jauniaux
Human chorionic gonadotropin (hCG) and its free β-subunit (β-hCG) are exclusively synthesized by the villous trophoblast. α-Fetoprotein (AFP) is synthesized by the secondary yolk sac and fetal liver. Levels of both hormones differ between women with placenta accreta spectrum (PAS) disorders and those with non-accreta previa.(1,2) Second-trimester maternal serum levels of AFP are increased,(1) and first-trimester serum β-hCG is decreased in women with PAS,(2) compared with those with non-accreta placenta previa...
October 17, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29044434/glp-1-increases-kiss-1-mrna-expression-in-kisspeptin-expressing-neuronal-cells
#6
Aki Oride, Haruhiko Kanasaki, Tselmeg Mijiddorj, Unurjargal Sukhbaatar, Tomomi Hara, Tuvshintugs Tumurbaatar, Satoru Kyo
Feeding-related metabolic factors exert regulatory influences on the hypothalamic-pituitary-gonadal axis. Glucagon-like peptide-1 (GLP-1) is an anorexigenic hormone synthesized from the ileum in response to food intake. The purpose of this study was to examine the direct effect of GLP-1 on hypothalamic kisspeptin and gonadotropin-releasing hormone (GnRH) expression using the rat clonal hypothalamic cell line rHypoE-8. GLP-1 significantly increased Kiss-1 mRNA expression in rHypoE-8 cells up to 1.94 ± 0.22-fold...
August 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29043503/pharmacoperones-for-misfolded-gonadotropin-receptors
#7
Claire L Newton, Ross C Anderson
The gonadotropin receptors (luteinising hormone receptor; LHR and follicle-stimulating hormone receptor; FSHR) are G protein-coupled receptors (GPCRs) that play an important role in the endocrine control of reproduction. Thus genetic mutations that cause impaired function of these receptors have been implicated in a number of reproductive disorders. Disease-causing genetic mutations in GPCRs frequently result in intracellular retention and degradation of the nascent protein through misfolding and subsequent recognition by cellular quality control machinery...
October 18, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/29042199/temporal-expression-and-gonadotropic-regulation-of-aromatase-and-estrogen-receptors-in-the-ovary-of-wall-lizard-hemidactylus-flaviviridis-correlation-with-plasma-estradiol-and-ovarian-follicular-development
#8
Mamta Tripathy, Umesh Rai
The current study in Indian wall lizard Hemidactylus flaviviridis for the first time demonstrates the reproductive phase-dependent expression pattern of aromatase (cyp19) and estrogen receptor subtypes (er-α and er-β) as well as their gonadotropic regulation in the ovary of a squamate. The expression of cyp19 remained low during regressed phase, increased markedly in recrudescent and declined sharply in breeding phase. Further, temporal profile of plasma estradiol 17-β (E2) was found to be relatively parallel to the expression pattern of ovarian cyp19...
October 14, 2017: Steroids
https://www.readbyqxmd.com/read/29040622/neurokinin-b-regulates-gonadotropin-secretion-ovarian-follicle-growth-and-the-timing-of-ovulation-in-healthy-women
#9
Karolina Skorupskaite, Jyothis T George, Johannes D Veldhuis, Richard A Anderson
Context: Neurokinin B (NKB) is obligate for human puberty, but its role in adult female gonadotropin secretion and ovarian follicle growth is unknown. Objective: To investigate antagonism of NKB on pulsatile GnRH/LH secretion and ovarian follicle development in normal women. Design: Open investigation of the effects of a neurokinin-3 receptor antagonist (NK3Ra) vs no treatment control cycle. Setting: Clinical Research Facility...
October 12, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29040519/high-gonadotropin-dosage-does-not-affect-euploidy-and-pregnancy-rates-in-ivf-pgs-cycles-with-single-embryo-transfer
#10
Oleksii O Barash, Mary D Hinckley, Evan M Rosenbluth, Kristen A Ivani, Louis N Weckstein
STUDY QUESTION: Does high gonadotropin dosage affect euploidy and pregnancy rates in PGS cycles with single embryo transfer? SUMMARY ANSWER: High gonadotropin dosage does NOT affect euploidy and pregnancy rates in PGS cycles with single embryo transfer. WHAT IS KNOWN ALREADY: PGS has been proven to be the most effective and reliable method for embryo selection in IVF cycles. Euploidy and blastulation rates decrease significantly with advancing maternal age...
October 12, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29039764/human-chorionic-gonadotropin-as-a-pivotal-endocrine-immune-regulator-initiating-and-preserving-fetal-tolerance
#11
REVIEW
Anne Schumacher
The pregnancy hormone, human chorionic gonadotropin (hCG), is crucially involved in processes such as implantation and placentation, two milestones of pregnancy whose successful progress is a prerequisite for adequate fetal growth. Moreover, hCG determines fetal fate by regulating maternal innate and adaptive immune responses allowing the acceptance of the foreign fetal antigens. As one of the first signals provided by the embryo to its mother, hCG has the potential to regulate very early pregnancy-driven immune responses, allowing the establishment and preservation of fetal tolerance...
October 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29039178/-potential-clinical-application-of-kisspeptin-in-reproductive-endocrinology
#12
Yanling Fu, Yimin Zhu
Gonadotropin-releasing hormone (GnRH) plays an important role in the process of reproduction. Studies have shown that a family of peptides Kisspeptin can act on GnRH-related neurons, stimulating the secretion of GnRH, and activating the hypothalamic-pituitary-gonadal axis. Both animal experiments and clinical studies have shown that exogenous administration of Kisspeptin is able to induce physiological GnRH release in healthy individuals and those with endocrine-disorders, which brings great hope for treatment of reproductive endocrine diseases...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29039174/-long-term-effects-of-polycystic-ovary-syndrome-on-the-offspring
#13
Dan Shen, Fangfang Wang, Zhou Jiang, Fan Qu
Polycystic ovary syndrome (PCOS) is an endocrine disorder with reproductive dysfunction and abnormal metabolic syndrome. However, its etiology is unknown yet. Androgen hypersecretion is one of the main features of PCOS. It has been found that PCOS has various effects on the offspring in reproductive, metabolic and nervous systems, including:increasing secretion of gonadotropin-releasing hormone and luteinizing hormone, ovarian morphological changes and abnormal secretion of sex hormones, leading to disorders of lipid and glucose metabolism, and increasing the risks of depression and autism...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29038356/local-production-of-neurostradiol-affects-gonadotropin-releasing-hormone-gnrh-secretion-at-mid-gestation-in-lagostomus-maximus-rodentia-caviomorpha
#14
Santiago E Charif, Pablo I F Inserra, Alejandro R Schmidt, Noelia P Di Giorgio, Santiago A Cortasa, Candela R Gonzalez, Victoria Lux-Lantos, Julia Halperin, Alfredo Daniel Vitullo, Verónica B Dorfman
Females of the South American plains vizcacha, Lagostomus maximus, show peculiar reproductive features such as massive polyovulation up to 800 oocytes per estrous cycle and an ovulatory process around mid-gestation arising from the reactivation of the hypothalamic-hypophyseal-ovary (H.H.O.) axis. Estradiol (E2) regulates gonadotropin-releasing hormone (GnRH) expression. Biosynthesis of estrogens results from the aromatization of androgens by aromatase, which mainly occurs in the gonads, but has also been described in the hypothalamus...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/29037859/chorionic-gonadotropin-%C3%AE-modulates-epithelial-mesenchymal-transition-in-colorectal-carcinoma-metastasis
#15
Futoshi Kawamata, Hiroshi Nishihara, Shigenori Homma, Yasutaka Kato, Masumi Tsuda, Yuji Konishi, Lei Wang, Shinji Kohsaka, Cheng Liu, Tadashi Yoshida, Mishie Tanino, Shinya Tanaka, Hideki Kawamura, Toshiya Kamiyama, Akinobu Taketomi
Ectopic production of free beta human chorionic gonadotropin (hCGβ) has been associated with aggressive behavior in non-trophoblastic tumors. hCGβ shares common evolutionary sequences with transforming growth factor-β (TGFβ), which represents a major driving force of epithelial to mesenchymal transition (EMT). In this study, we examined the biological roles of hCGβ during EMT and its clinical significance in colorectal cancer (CRC) progression. Eighty CRC specimens and 54 preoperative serum samples were analyzed...
October 13, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29037192/retroperitoneal-ectopic-pregnancy-a-case-report-and-review-of-the-literature
#16
Man Yang, Lamu Cidan, Dan Zhang
BACKGROUND: Retroperitoneal ectopic pregnancy (REP) is an extremely rare type of ectopic pregnancy, with a total of less than 20 cases reported in the English literature. However, failure to recognize REP may result in severe consequences. CASE PRESENTATION: We report a case of 32-year-old woman with REP. She had amenorrhea, left lower abdominal pain, but no vaginal bleeding. Her urine human chorionic gonadotropin (HCG) test was positive and blood HCG level was 1880 m-international units per milliliter (mIU/mL)...
October 16, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29037085/luteal-phase-serum-progesterone-levels-after-gnrh-agonist-trigger-how-low-is-still-high-enough-for-an-ongoing-pregnancy
#17
B Lawrenz, S Samir, L Melado, F Ruiz, H M Fatemi
In the past years, individualization of assisted reproductive technique (ART)-treatment is increasingly common to customize the treatment protocol to the patient's specific conditions. The use of GnRH-agonist for final oocyte maturation in a gonadotropin-releasing hormone (GnRH)-antagonist protocol is the best approach to reduce the risk for ovarian hyperstimulation in high responder patients. However, due to severe luteolysis, the reproductive outcome with this approach in combination with the use of vaginal progesterone as luteal phase support, was poor...
October 16, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29036809/role-of-fshr-rs6165-and-esr2-rs4986938-polymorphisms-in-ovarian-stimulation-of-iranian-women-who-underwent-assisted-reproduction-treatment
#18
Maryam Kaviani, Sayyed Mohammad Hossein Ghaderian, Soheila Arefi, Mehrdad Hashemi, Sarah Sadat Aghabozorg Afjeh
BACKGROUND: Gonadotropin therapy was used to stimulate the ovary in infertile women who underwent assisted reproduction treatment (ART). Numerous studies indicated that infertile women showed different responses to gonadotropin therapy. Follicle stimulating hormone receptor (FSHR) and Oestrogen receptor (ER) polymorphisms have been reported to involve induction of folliculogenesis and ovarian response to treatment. METHODS: In the present study, two polymorphisms, namely FSHR rs6165 and ESR2 rs4986938, were investigated in 198 Iranian infertile women aged less than 39 years who underwent ART...
September 29, 2017: Human Antibodies
https://www.readbyqxmd.com/read/29036173/pre-treatment-with-gnrha-or-ulipristal-acetate-prior-to-laparoscopic-and-laparotomic-myomectomy-a-systematic-review-and-meta-analysis
#19
Inge de Milliano, Moniek Twisk, Johannes C Ket, Judith A Huirne, Wouter J Hehenkamp
BACKGROUND: Myomectomy has potential risks of complications. To reduce these risks, medical pre-treatment can be applied to reduce fibroid size and thereby potentially decrease intra-operative blood loss, the need for blood transfusion and emergency hysterectomy. The aim of this systematic review and meta-analysis is to study the effectiveness of medical pre-treatment with Gonadotropin-releasing hormone agonists (GnRHa) or ulipristal acetate prior to laparoscopic or laparotomic myomectomy on intra-operative and post-operative outcomes...
2017: PloS One
https://www.readbyqxmd.com/read/29034302/comparison-of-two-immunoassay-systems-for-hcg%C3%AE-and-papp-a-in-prenatal-screening-for-trisomy-21-18-and-13-in-the-first-trimester
#20
Anna Elise Engell, Elin Rebecka Carlsson, Finn Stener Jørgensen, Steen Sørensen
OBJECTIVES: The biochemical serum markers free β-human chorionic gonadotropin (hCGβ) and pregnancy associated plasma protein A (PAPP-A), used in screening for trisomy 21 (T21), trisomy 18 (T18), and trisomy 13 (T13) during the first trimester, can be measured on different laboratory instruments e.g. Kryptor (Brahms) and Cobas (Roche). We compared the performance of these two analytical instruments when used for first trimester combined testing. DESIGN AND METHODS: Serum samples from 944 singleton pregnant women attending for first trimester combined testing were routinely assayed for hCGβ and PAPP-A on Kryptor, and re-analyzed on Cobas...
December 2017: Pract Lab Med
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