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Reproductive Biology and Endocrinology: RB&E

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https://www.readbyqxmd.com/read/28720098/arcyriaflavin-a-a-cyclin-d1-cyclin-dependent-kinase4-inhibitor-induces-apoptosis-and-inhibits-proliferation-of-human-endometriotic-stromal-cells-a-potential-therapeutic-agent-in-endometriosis
#1
Tomoko Hirakawa, Kaei Nasu, Yoko Aoyagi, Kanetoshi Takebayashi, Hisashi Narahara
BACKGROUND: We previously showed that microRNA-503 (miR-503) transfection into endometriotic cyst stromal cells (ECSCs) induced cell cycle arrest at the G0/G1 phase by suppressing cyclin D1. This finding prompted us to evaluate the potential therapeutic effects of cyclin D1 inhibitors in endometriotic cells. This study aimed to determine whether arcyriaflavin A, a representative inhibitor of cyclin D1-cyclin-dependent kinase 4 (CDK4), is beneficial in the treatment of endometriosis. METHODS: ECSCs were isolated from the ovarian endometriotic tissues of 32 women...
July 18, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28716123/differentiating-mouse-embryonic-stem-cells-express-markers-of-human-endometrium
#2
P Parasar, C R Sacha, N Ng, E R McGuirk, S Chinthala, P Ozcan, J Lindsey, S Salas, M R Laufer, S A Missmer, R M Anchan
BACKGROUND: Modeling early endometrial differentiation is a crucial step towards understanding the divergent pathways between normal and ectopic endometrial development as seen in endometriosis. METHODS: To investigate these pathways, mouse embryonic stem cells (mESCs) and embryoid bodies (EBs) were differentiated in standard EB medium (EBM). Immunofluorescence (IF) staining and reverse-transcription polymerase chain reaction (RT-PCR) were used to detect expression of human endometrial cell markers on differentiating cells, which were sorted into distinct populations using fluorescence-activated cell sorting (FACS)...
July 17, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28693593/psychological-stress-is-related-to-a-decrease-of-serum-anti-m%C3%A3-llerian-hormone-level-in-infertile-women
#3
Yue-Zhi Dong, Fei-Jing Zhou, Ying-Pu Sun
BACKGROUND: Stress exposure has been proved to be linked to reproductive failure. The reproductive potential of women depends on the ovarian reserve. Anti-müllerian hormone (AMH) has been proved a reliable clinical marker of ovarian reserve. However, the correlation between psychological stress and AMH level is not clear. METHODS: A cross-sectional study including 576 women was conducted. AMH concentration was tested to reflect the ovarian reserve. Salivary alpha-amylase (SAA) level was measured to assess the stress of patients objectively...
July 11, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28693534/polycystic-ovary-syndrome-induced-by-exposure-to-testosterone-propionate-and-effects-of-sympathectomy-on-the-persistence-of-the-syndrome
#4
Leticia Morales-Ledesma, Juan Antonio Díaz Ramos, Angélica Trujillo Hernández
No abstract text is available yet for this article.
July 10, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28666459/towards-a-better-understanding-of-preimplantation-genetic-screening-for-aneuploidy-insights-from-a-virtual-trial-for-women-under-the-age-of-40-when-transferring-embryos-one-at-a-time
#5
Paul N Scriven
BACKGROUND: The aim of this theoretical study is to explore the cost-effectiveness of aneuploidy screening in a UK setting for every woman aged under the age of 40 years when fresh and vitrified-warmed embryos are transferred one at a time in a first full cycle of assisted conception. METHODS: It is envisaged that a 24-chromosome genetic test for aneuploidy could be used to exclude embryos with an abnormal test result from transfer, or used only to rank embryos with the highest potential to be viable; the effect on cumulative outcome is assessed...
June 30, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28645286/the-myths-surrounding-mild-stimulation-in-vitro-fertilization-ivf
#6
REVIEW
Raoul Orvieto, Valeria Stella Vanni, Norbert Gleicher
So-called mild controlled ovarian hyperstimulation (mCOH) has in recent years increased in popularity, claiming to be safer and more patient-friendly, while also improving in vitro fertilization (IVF) outcomes. We here challenge the International Society for Mild Approaches in Assisted Reproduction (ISMAAR) definition of mild stimulation, and especially address four fundamental issues, where our review found conventional COH (cCOH) advantageous over mCOH. They are: prevalence of severe ovarian hyperstimulation syndrome (OHSS), oocyte/embryo quality, pregnancy/live birth rates, and cost...
June 24, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28645283/oocyte-polarized-light-microscopy-assay-of-specific-follicular-fluid-metabolites-and-gene-expression-in-cumulus-cells-as-different-approaches-to-predict-fertilization-efficiency-after-icsi
#7
Alberto Revelli, Stefano Canosa, Loredana Bergandi, Oleksii A Skorokhod, Valentina Biasoni, Andrea Carosso, Angela Bertagna, Milena Maule, Elisabetta Aldieri, Maria Diletta D'Eufemia, Francesca Evangelista, Nicola Colacurci, Chiara Benedetto
BACKGROUND: The complex relationship between oocyte morphology, specific follicular fluid metabolites, gene expression in cumulus granulosa cells, and oocyte competence toward fertilization and embryo development still needs further clarification. METHODS: Forty-six oocytes retrieved from the largest pre-ovulatory follicle of patients undergoing intra-cytoplasmic sperm injection (ICSI) were considered assessing: (a) oocyte morphological characteristics at polarized light microscopy (PLM), (b) specific follicular fluid (FF) metabolites previously suggested to influence oocyte competence (AMH, markers of redox status and of cytotoxicity), (c) transcription of AMH and AMH type II receptor genes in cumulus cells...
June 23, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28623929/the-potential-regulatory-mechanisms-of-the-gonadotropin-releasing-hormone-in-gonadotropin-transcriptions-identified-with-bioinformatics-analyses
#8
Wei Xiang, Baoyun Zhang, Fenglin Lv, Guangde Feng, Long Chen, Fang Yang, Ke Zhang, Chunyu Cao, Pingqing Wang, Mingxing Chu
BACKGROUND: The regulation of gonadotropin synthesis and release by gonadotropin-releasing hormone (GnRH) plays an essential role in the neuroendocrine control of reproduction. However, the mechanisms underlying gonadotropin regulation by GnRH pulse frequency and amplitude are still ambiguous. This study aimed to explore the molecular mechanisms and biological pathways associated with gonadotropin synthesis by GnRH pulse frequencies and amplitudes. METHODS: Using GSE63251 datasets downloaded from the Gene Expression Omnibus (GEO), differentially expressed genes (DEGs) were screened by comparing the RNA expression from the GnRH pulse group, the GnRH tonic group and the control group...
June 17, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28606175/differences-in-utilization-of-intracytoplasmic-sperm-injection-icsi-within-human-services-hhs-regions-and-metropolitan-megaregions-in-the-u-s
#9
Pavel Zagadailov, Albert Hsu, David B Seifer, Judy E Stern
BACKGROUND: Anecdotal evidence suggests that US practice patterns for ART differ by geographical region. The purpose of this study was to determine whether use of ICSI differs by region and to evaluate whether these rates are correlated with differences in live birth rates. METHODS: Public data for 2012 were obtained from the Centers for Disease Control and Prevention. Clinics with ≥100 fresh, non-donor cycles were grouped by 10 nationally recognized Department of Health & Human Services regions and 11 metropolitan Megaregions and were compared for use of ICSI, frequency of male factor infertility, and live birth rate in women <35 years...
June 12, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28595591/effect-of-race-and-ethnicity-on-utilization-and-outcomes-of-assisted-reproductive-technology-in-the-usa
#10
Alice J Shapiro, Sarah K Darmon, David H Barad, David F Albertini, Norbert Gleicher, Vitaly A Kushnir
BACKGROUND: The purpose of this study was to determine the utilization and live birth rates of assisted reproductive technology (ART) modalities among various racial and ethnic groups in recent years. METHODS: We reviewed ART data reported to the Society for Assisted Reproductive Technologies Clinic Outcome Reporting System (SART CORS) for autologous ART and third-party ART (3ART) cycles which involved donor oocytes, sperm, embryos and gestational carrier, performed in the U...
June 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28577574/activating-transcription-factor-3-promotes-embryo-attachment-via-up-regulation-of-leukemia-inhibitory-factor-in-vitro
#11
Xi Cheng, Jingyu Liu, Huizhi Shan, Lihua Sun, Chenyang Huang, Qiang Yan, Ruiwei Jiang, Lijun Ding, Yue Jiang, Jianjun Zhou, Guijun Yan, Haixiang Sun
BACKGROUND: A receptive endometrium is essential for maternal-embryonic molecular communication during implantation. However, the specific molecular regulatory mechanisms of the endometrial capacity remain poorly understood. Here, we examined activating transcription factor 3 (ATF3) expression in human endometria and the functional effect of ATF3 on embryo attachment in vitro. METHODS: Immunohistochemistry (IHC) was used to assess the ATF3 expression patterns in human endometria...
June 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28576120/expression-of-genes-associated-with-bmp-signaling-pathway-in-porcine-oocytes-before-and-after-ivm-a-microarray-approach
#12
Joanna Budna, Marta Rybska, Sylwia Ciesiółka, Artur Bryja, Sylwia Borys, Wiesława Kranc, Katarzyna Wojtanowicz-Markiewicz, Michal Jeseta, Ewa Sumelka, Dorota Bukowska, Paweł Antosik, Klaus P Brüssow, Małgorzata Bruska, Michał Nowicki, Maciej Zabel, Bartosz Kempisty
BACKGROUND: The full maturational capability of mammalian oocytes is accompanied by nuclear and cytoplasmic modifications, which are associated with proliferation and differentiation of surrounding cumulus cells. These events are regulated on molecular level by the expression of target genes involved in signal transduction pathways crucial for folliculogenesis and oogenesis. Transforming growth factor beta signaling includes several molecules that are involved in the regulation of oogenesis and embryo growth, including bone morphogenetic protein (BMP)...
June 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28558842/natriuretic-peptides-improve-the-developmental-competence-of-in-vitro-cultured-porcine-oocytes
#13
Yanhao Zhang, Huarong Wang, Wei Liu, Ye Yang, Xiao Wang, Zhiyuan Zhang, Qirui Guo, Chao Wang, Guoliang Xia
BACKGROUND: Natriuretic peptides (NPs), brain and C type NPs (BNP and CNP), were involved in the maintenance of porcine oocyte meiotic arrest. The present study investigated the effects of NPs on developmental competence of immature porcine oocytes with follicles of different sizes. METHODS: Follicular fluid NP levels were examined by radioimmunoassay. The developmental competence of porcine oocytes was evaluated by cleavage and blastocyst developmental rates after in vitro fertilization (IVF) or parthenogenetic activation (PA) of cumulus oocyte complexes (COCs), which were recovered from follicle with different sizes...
May 30, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28549437/p-p-ddt-induces-testicular-oxidative-stress-induced-apoptosis-in-adult-rats
#14
Neila Marouani, Dorsaf Hallegue, Mohsen Sakly, Moncef Benkhalifa, Khémais Ben Rhouma, Olfa Tebourbi
BACKGROUND: The 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (p,p'-DDT) is a known persistent organic pollutant and male reproductive toxicant. The present study is designed to test the hypothesis that oxidative stress mediates p,p'-DDT-induced apoptosis in testis. METHODS: Male Wistar rats received an intraperitoneal (ip) injection of the pesticide at doses of 50 and 100mg/kg for 10 consecutive days. The oxidative stress was evaluated by biomarkers such lipid peroxidation (LPO) and metallothioneins (MTs) levels...
May 26, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28545515/outcome-of-in-vitro-fertilization-in-women-with-subclinical-hypothyroidism
#15
YunYing Cai, LanPing Zhong, Jie Guan, RuiJin Guo, Ben Niu, YanPing Ma, Heng Su
BACKGROUND: Previous studies examining associations between subclinical hypothyroidism (SCH) with in vitro fertilization (IVF) outcome indicate some benefits of levothyroxine (LT4) treatment. But IVF outcomes in treated SCH women whose serum Thyroid Stimulating Hormone (TSH) concentration did and did not exceed 2.5 mIU/L before the IVF cycle has not been studied thoroughly. METHODS: In this study, we performed a prospective cohort study with 270 treated subclinical hypothyroidism patients undergoing their first IVF retrieval cycle at a single cite...
May 25, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28499456/role-of-micrornas-in-premature-ovarian-insufficiency
#16
REVIEW
Ying Guo, Junyan Sun, Dongmei Lai
Premature ovarian insufficiency (POI) is a typical disorder of amenorrhea lasting for a minimum of 4 months. The typical characteristics comprised of declined estrogen and raised serum concentrations of follicle-stimulating hormone (FSH) in women <40-year-old, primarily originating from iatrogenic factors, karyotypic abnormalities, and genetic factors. However, the etiology of POI remains unknown in approximately 90% of cases. POI could lead to infertility, osteoporosis, cardiovascular disorder, and cognitive dysfunction...
May 12, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28482910/pregnancy-rates-of-day-4-and-day-5-embryos-after-culture-in-an-integrated-time-lapse-incubator
#17
Verena Holschbach, Julia Weigert, Jens Erik Dietrich, Sabine Roesner, Markus Montag, Thomas Strowitzki, Bettina Toth
BACKGROUND: The aim of this study was to compare pregnancy rates in patients undergoing IVF/ICSI with embryo transfer after 4 and 5 days of culture in a closed incubation system with integrated time-lapse imaging. METHODS: Out of n = 2207 in vitro fertilization (IVF)/ intracytoplasmic sperm injection (ICSI) cycles performed between January 2011 and April 2016 at a tertiary referral university hospital, a total of n = 599 IVF/ICSI cycles with prolonged embryo culture in an integrated time-lapse system (EmbryoScope(©) (Vitrolife)) until day 4 or 5 were retrospectively analyzed with regard to embryo morphology and pregnancy rates...
May 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28472983/comparative-neonatal-outcomes-in-singleton-births-from-blastocyst-transfers-or-cleavage-stage-embryo-transfers-a-systematic-review-and-meta-analysis
#18
REVIEW
Xingling Wang, Mingze Du, Yichun Guan, Bijun Wang, Junwei Zhang, Zihua Liu
BACKGROUND: Comparative neonatal outcomes with respect to singleton births from blastocyst transfers or cleavage-state embryo transfers are controversial with respect to which method is superior. Many studies have yielded contradictory results. We performed a systematic review and meta-analysis for the purpose of comparing neonatal outcomes in single births following IVF/ICSI. METHODS: We searched the Medline, Embase and Cochrane Central Register of Clinical Trials (CCTR) databases until October 2016...
May 4, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28464910/intracerebroventricular-injection-of-rfrp-3-delays-puberty-onset-and-stimulates-growth-hormone-secretion-in-female-rats
#19
Xinghui Han, Yuanyuan He, Gulan Zeng, Yonghong Wang, Wen Sun, Junchao Liu, Yanyan Sun, Jian Yu
BACKGROUND: Puberty onset is a complex, organized biological process with multilevel regulation, and its physiopathological mechanisms are yet to be elucidated. RFRP-3, the mammalian ortholog to gonadotropin-inhibitory hormone, is implicated in inhibiting the synthesis and release of gonadotropin in mammals. However, it is unclear whether RFRP-3 participates in regulating pubertal development. METHODS: This study investigated the functional significance and regulatory mechanism of hypothalamic RFRP-3 neuropeptide in the onset of puberty in young female rats...
May 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28454580/association-of-skewed-x-chromosome-inactivation-with-fmr1-cgg-repeat-length-and-anti-mullerian-hormone-levels-a-cohort-study
#20
David H Barad, Sarah Darmon, Andrea Weghofer, Gary J Latham, Filipovic-Sadic, Qi Wang, Vitaly A Kushnir, David F Albertini, Norbert Gleicher
BACKGROUND: Premutation range CGGn repeats of the FMR1 gene denote risk toward primary ovarian insufficiency (POI), also called premature ovarian failure (POF). This prospective cohort study was undertaken to determine if X-chromosome inactivation skew (sXCI) is associated with variations in FMR1 CGG repeat length and, if so, is also associated with age adjusted antimüllerian hormone (AMH) levels as an indicator of functional ovarian reserve (FOR). METHODS: DNA samples of 58 women were analyzed for methylation status and confirmation of CGGn repeat length...
April 28, 2017: Reproductive Biology and Endocrinology: RB&E
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