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https://www.readbyqxmd.com/read/29443049/handling-and-treatment-of-male-european-eels-anguilla-anguilla-for-hormonal-maturation-and-sperm-cryopreservation
#1
Juan G Herranz-Jusdado, Eszter Kása, Tímea Kollár, Víctor Gallego, David S Peñaranda, Christoffer Rozenfeld, Luz Pérez, Ákos Horváth, Juan F Asturiano
During the last years, several research groups have been working on the development and improvement of new protocols for the European eel handling and maturation. As of yet, weekly injections of human chorionic gonadotropin (hCG) have proved to maturate males after just 5-6 weeks of treatment, producing high volumes of high-quality sperm during several weeks. In addition, sperm cryopreservation protocols using different extenders, cryoprotectants and cooling and thawing times have been previously described for European eel...
January 28, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29439729/application-of-neural-networks-for-classification-of-patau-edwards-down-turner-and-klinefelter-syndrome-based-on-first-trimester-maternal-serum-screening-data-ultrasonographic-findings-and-patient-demographics
#2
Aida Catic, Lejla Gurbeta, Amina Kurtovic-Kozaric, Senad Mehmedbasic, Almir Badnjevic
BACKGROUND: The usage of Artificial Neural Networks (ANNs) for genome-enabled classifications and establishing genome-phenotype correlations have been investigated more extensively over the past few years. The reason for this is that ANNs are good approximates of complex functions, so classification can be performed without the need for explicitly defined input-output model. This engineering tool can be applied for optimization of existing methods for disease/syndrome classification. Cytogenetic and molecular analyses are the most frequent tests used in prenatal diagnostic for the early detection of Turner, Klinefelter, Patau, Edwards and Down syndrome...
February 13, 2018: BMC Medical Genomics
https://www.readbyqxmd.com/read/29439620/acute-drug-effects-on-the-human-placental-tissue-the-development-of-a-placental-murine-xenograft-model
#3
Magali Verheecke, Els Hermans, Sandra Tuyaerts, Erika Souche, Rita Van Bree, Godelieve Verbist, Tina Everaert, Jeroen Van Houdt, Kristel Van Calsteren, Frederic Amant
OBJECTIVE: A pilot study was conducted to establish a human placental xenograft, which could serve as a model to evaluate the effect of toxic exposures during pregnancy. STUDY DESIGN: The protocol consisted of engraftment of third-trimester human placental tissue in immunocompromised mice, after induction of a pseudo-pregnancy state by ovariectomy and progesterone supplementation. To validate the model, the placental tissue before and after engraftment was examined by immunohistochemistry, fluorescence-activated cell sorting (FACS), single-nucleotide polymorphism (SNP) genotyping, and whole transcriptome sequencing (WTSS)...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29439618/effect-of-prolonged-gnrh-agonist-downregulation-on-icsi-outcome-in-patients-with-endometriomas-of-less-than-5-cm-a-randomized-controlled-trial
#4
Ahmed Mohamed Maged, Hamsa Rashwan, Maryam Mahmoud, Akmal El-Mazny, Mona Farouk, Doaa S Belal, Heba M Marie
OBJECTIVE: To evaluate the effect of prolonged Gonadotropin releasing hormone (GnRH) agonist downregulation in patients with endometriomas of less than 5 cm on the outcome of the proceeding Intracytoplasmic sperm injection (ICSI) trial. METHODS: In a randomized controlled trial at a university teaching hospital, 90 patients indicated for ICSI and having unilateral single endometrioma of less than 5 cm in diameter were randomized into 2 groups. Group A (45 patients) received the standard long protocol; whereas group B (45 patients) received 3 consecutive Intramuscular (IM) injections of triptorelin 3...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29438723/discovery-and-development-of-odm-204-a-novel-nonsteroidal-compound-for-the-treatment-of-castration-resistant-prostate-cancer-by-blocking-the-androgen-receptor-and-inhibiting-cyp17a1
#5
REVIEW
Riikka Oksala, Anu Moilanen, Reetta Riikonen, Petteri Rummakko, Arja Karjalainen, Mikko Passiniemi, Gerd Wohlfahrt, Päivi Taavitsainen, Chira Malmström, Meri Ramela, Hanna-Maija Metsänkylä, Riikka Huhtaniemi, Pekka J Kallio, Mika Vj Mustonen
We report the discovery of a novel nonsteroidal dual-action compound, ODM-204, that holds promise for treating patients with castration-resistant prostate cancer (CRPC), an advanced form of prostate cancer characterised by high androgen receptor (AR) expression and persistent activation of the AR signaling axis by residual tissue androgens. For ODM-204, has a dual mechanism of action. The compound is anticipated to efficiently dampen androgenic stimuli in the body by inhibiting CYP17A1, the prerequisite enzyme for the formation of dihydrotestosterone (DHT) and testosterone (T), and by blocking AR with high affinity and specificity...
February 10, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29438592/are-all-gonadotropin-releasing-hormone-agonists-equivalent-for-the-treatment-of-prostate-cancer-a-systematic-review
#6
REVIEW
Eva M Bolton, Thomas H Lynch
OBJECTIVES: To review comparative studies of the gonadotropin-releasing hormone (GnRH) agonists goserelin, triptorelin, and leuprorelin for the treatment of prostate cancer, and identify whether there are meaningful clinical differences between these agents. METHODS: In June 2017, the following searches were performed independently by two reviewers in PubMed: (i) 'prostate cancer' and 'triptorelin' and 'leuprorelin', (ii) 'prostate cancer' and 'triptorelin' and 'goserelin', and (iii) 'prostate cancer' and 'goserelin' and 'leuprorelin', without time restriction...
February 13, 2018: BJU International
https://www.readbyqxmd.com/read/29438534/both-in-vivo-fsh-depletion-and-follicular-exposure-to-gonadotrophin-releasing-hormone-analogues-in-vitro-are-not-effective-to-prevent-follicular-depletion-during-chemotherapy-in-mice
#7
F Horicks, G Van Den Steen, C Gervy, H J Clarke, I Demeestere
STUDY QUESTION: Does fertility preservation using gonadotrophin-releasing hormone (GnRH) analogues during chemotherapy act through a direct effect on the ovary or through inhibition of FSH secretion? SUMMARY ANSWER: The absence of FSH in vivo and the direct exposition of ovarian follicles to GnRH analogues in vitro did not prevent chemotherapy-induced ovarian damage. WHAT IS KNOWN ALREADY: The potential mechanisms of action of GnRH analogues in protecting ovaries against chemotherapy damage remain poorly understood...
February 9, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29438034/c1qtnf3-in-the-murine-ovary-and-its-function-in-folliculogenesis
#8
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/29436793/gonadotropin-regulation-of-retinoic-acid-activity-in-the-testis
#9
Seyedmehdi Nourashrafeddin, Batool Hosseini Rashidi
Initiation of spermatogenesis in primates is triggered at puberty by an increase in gonadotropins; i.e., follicle-stimulating hormone (FSH) and luteinizing hormone (LH). Prior to puberty, testis of the monkey contains only undifferentiated germ cells. However, sermatogonial differentiation and spermatogenesis may be initiated prior to puberty after stimulation with exogenous LH and FSH. Retinoic acid (RA) signaling is considered to be a major component that drives spermatogonial differentiation. We were interested in evaluating the relative role of LH and FSH, either alone or in combination, in regulating the retinoic acid signaling in monkey testis...
January 2018: Acta Medica Iranica
https://www.readbyqxmd.com/read/29436666/daidzein-induces-choriocarcinoma-cell-apoptosis-in-a-dose-dependent-manner-via-the-mitochondrial-apoptotic-pathway
#10
Wei Zheng, Teng Liu, Rong Sun, Lei Yang, Ruifang An, Yan Xue
Choriocarcinoma is a malignant gestational trophoblastic disease and relapse or drug resistance occurs in ~25% of gestational trophoblastic tumors. Cell apoptosis serves a role in the progression from hydatidiform mole to persistent gestational trophoblastic disease. It has been demonstrated that daidzein [7‑hydroxy‑3‑(4‑hydroxyphenyl)‑4H‑chromen‑4‑one] may induce apoptosis in a number of cancer types via the mitochondrial apoptotic pathway by altering the B‑cell lymphoma (Bcl)‑2/Bcl‑2 associated X, apoptosis regulator (Bax) ratio, and activating the caspase cascade...
February 13, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29436143/infertility-treatment-strategy-involving-combined-freeze-all-embryos-and-single-vitrified-warmed-embryo-transfer-during-hormonal-replacement-cycle-for-in-vitro-fertilization-of-women-with-hypogonadotropic-hypogonadism
#11
Keiji Kuroda, Kenji Ezoe, Keiichi Kato, Akiko Yabuuchi, Tomoya Segawa, Tamotsu Kobayashi, Asako Ochiai, Noriko Katoh, Satoru Takeda
AIM: Hypogonadotropic hypogonadism (HH) is a condition caused by the deficient secretion of pituitary gonadotropins, leading to diminished ovarian function. Several studies of in vitro fertilization (IVF) in women with HH revealed acceptable clinical pregnancy outcomes but high multiple pregnancy rates after multiple fresh embryo transfer (ET). The purpose of this study was to analyze the outcomes of combined freeze-all embryos and single vitrified-warmed ET in women with HH. METHODS: Of 91 infertile women with HH (basal luteinizing hormone and follicle-stimulating hormone levels <2...
February 13, 2018: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29436119/laparoscopic-diagnosis-and-treatment-of-an-isolated-epithelioid-trophoblastic-tumor-in-recto-uterine-pouch
#12
Fang Jiang, Yang Xiang, Li-Na Guo
A 30-year-old Chinese woman with irregular vaginal bleeding was admitted to our department. Serum β-human chorionic gonadotropin (β-hCG) was moderately elevated, and ultrasound and magnetic resonance imaging revealed an irregular, retro-uterine lesion without intrauterine pregnancy. Ectopic pregnancy was the primary consideration, with trophoblastic tumor being another possibility. Laparoscopy revealed a 2 × 3 × 3 cm3 irregular, infiltrating, yellow-white lesion in the left recto-uterine pouch, which was completely resected without rectal damage...
February 13, 2018: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29435182/dual-trigger-of-triptorelin-and-hcg-optimizes-clinical-outcome-for-high-ovarian-responder-in-gnrh-antagonist-protocols
#13
Saijiao Li, Danni Zhou, Tailang Yin, Wangming Xu, Qingzhen Xie, Dan Cheng, Jing Yang
In this paper, a retrospective cohort study was conducted to the high ovarian responders in GnRH-antagonist protocols of IVF/ICSI cycles. The purpose of the study is to investigate whether dual triggering of final oocyte maturation with a combination of gonadotropin-releasing hormone (GnRH) agonist and human chorionic gonadotropin (HCG) can improve the clinical outcome compared with traditional dose (10000IU) HCG trigger and low-dose (8000IU) HCG trigger for high ovarian responders in GnRH-antagonist in vitro fertilization/intracytoplasmic sperm injection (IVF-ICSI) cycles...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29434234/altered-aspects-of-anxiety-related-behavior-in-kisspeptin-receptor-deleted-male-mice
#14
Sarah Delmas, Robert Porteous, Dave H Bergin, Allan E Herbison
The roles of kisspeptin signaling outside the hypothalamus in the brain are unknown. We examined here the impact of Kiss1r-deletion on hippocampus-related behaviors of anxiety and spatial learning in adult male mice using two mouse models. In the first, global Kiss1r-null and control mice were gonadectomized (GDX KISS1R-KO). In the second, KISS1R signalling was rescued selectively in gonadotropin-releasing hormone neurons to generate Kiss1r-null mice with normal testosterone levels (intact KISS1R-KO). Intact KISS1R-KO rescue mice were found to spend twice as much time in the open arms of the elevated plus maze (EPM) compared to controls (P < 0...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29433402/the-effect-of-low-dose-ovarian-stimulation-with-hmg-plus-progesterone-on-pregnancy-outcome-in-women-with-history-of-recurrent-pregnancy-loss-and-secondary-infertility-a-retrospective-cohort-study
#15
Maria Elisabetta Coccia, Francesca Rizzello, Mauro Cozzolino, Valentina Turillazzi, Tommaso Capezzuoli
We assessed the outcome of pregnancy in women with a history of recurrent pregnancy loss (RPL) following treatment with low-dose human menopausal gonadotropin (HMG)+progesterone or progesterone alone. This single-center retrospective cohort study included data from women diagnosed with RPL and treated between February 2005 and December 2012 with one cycle of HMG + progesterone or progesterone alone. Primary endpoint was the rate of ongoing pregnancies and losses by treatment, age (<38 vs. ≥38 years) and in the subgroup with unexplained RPL...
February 12, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29432729/functional-characterization-and-quantitative-expression-analysis-of-two-gnrh-related-peptide-receptors-in-the-mosquito-aedes-aegypti
#16
Alireza Oryan, Azizia Wahedi, Jean-Paul V Paluzzi
To cope with stressful events such as flight, organisms have evolved various regulatory mechanisms, often involving control by endocrine-derived factors. In insects, two stress-related factors include the gonadotropin-releasing hormone-related peptides adipokinetic hormone (AKH) and corazonin (CRZ). AKH is a pleiotropic hormone best known as a substrate liberator of proteins, lipids and carbohydrates. CRZ has been shown to have roles in pigmentation, ecdysis or act as a cardiostimulatory factor although a universal function has not yet been elucidated...
February 9, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29431849/medical-treatment-in-the-management-of-deep-endometriosis-infiltrating-the-proximal-rectum-and-sigmoid-colon-a-comprehensive-literature-review
#17
Paolo Vercellini, Laura Buggio, Alessandra Borghi, Ermelinda Monti, Umberto Gattei, Maria Pina Frattaruolo
A comprehensive literature review was performed to evaluate the effect of various hormonal therapies, in terms of variations of intestinal and pain complaints and of patient satisfaction with treatment, in women with symptomatic, non-severely sub-occlusive endometriosis infiltrating the proximal rectum and sigmoid colon. A MEDLINE search through PubMed from 2000 to 2018 was conducted to identify all original English language articles published on medical treatment for colorectal endometriosis. Additional reports were identified by systematically reviewing reference lists and using the "similar articles" function in PubMed...
February 12, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29430170/analytical-characterization-of-recombinant-hcg-and-comparative-studies-with-reference-product
#18
Rajamannar Thennati, Sanjay Kumar Singh, Nitin Nage, Yena Patel, Sandip Kumar Bose, Vinod Burade, Ranjit Sudhakar Ranbhor
Introduction: Regulatory agencies recommend a stepwise approach for demonstrating biosimilarity between a proposed biosimilar and reference biological product emphasizing for functional and structural characterization to trace if there is any difference which may impact safety and efficacy. We studied the comparative structural and biological attributes of recombinant human chorionic gonadotropin (rhCG), SB005, with reference product, Ovidrel ® and Ovitrelle ® . Recombiant hCG was approved in 2000 by the US Food and Drug Administration for the induction of final follicular maturation, early luteinization in infertile women as part of assisted reproductive technology program...
2018: Biologics: Targets & Therapy
https://www.readbyqxmd.com/read/29430154/repeat-dose-of-gonadotropin-releasing-hormone-agonist-trigger-in-polycystic-ovarian-syndrome-undergoing-in-vitro-fertilization-cycles-provides-a-better-cycle-outcome-a-proof-of-concept-study
#19
Krishna Deepika, Pookilath Baiju, Praneesh Gautham, Rathore Suvarna, Vohra Arveen, Rao Kamini
Objective: Is a single dose of gonadotropin-releasing hormone agonist (GnRHa) trigger to induce final oocyte maturation in polycystic ovarian syndrome (PCOS) undergoing in vitro fertilization (IVF) cycles with GnRH antagonist protocol sufficient to provide optimal oocyte maturity? Design: This is a prospective, randomized, double-blind, proof-of-concept study. Setting: This study was carried out at a tertiary care center. Material and Methods: A total of 125 patients diagnosed with PCOS defined as per the ESHRE/ASRM Rotterdam criteria (2003) undergoing IVF in antagonist protocol were randomized into two groups...
October 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29430153/the-impact-of-progesterone-level-on-day-of-hcg-injection-in-ivf-cycles-on-clinical-pregnancy-rate
#20
Jawa Ashmita, Swarankar Vikas, Garg Swati
Background: Premature progesterone rise (PPR) has long been implicated as contributing to implantation failure. Despite the use of gonadotropin-releasing hormone (GnRH) analogues, subtle increases in serum progesterone ( P 4 ) levels beyond a threshold progesterone concentration were observed on the day of trigger in controlled ovarian hyperstimulation cycles. Aims: The purpose of the study was to evaluate the incidence of PPR on the day of trigger in conventional IVF/ICSI cycles and its impact on clinical pregnancy rate...
October 2017: Journal of Human Reproductive Sciences
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