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https://www.readbyqxmd.com/read/28742504/correlation-of-serum-anti-m%C3%A3-llerian-hormone-levels-with-positive-in-vitro-fertilization-outcome-using-a-short-agonist-protocol
#1
Spyridon D Mantzavinos, Nikolaos P Vlahos, Demetrios Rizos, Demetrios Botsis, Theodoros N Sergentanis, Efthimios Deligeoroglou, Themistoklis Mantzavinos
OBJECTIVE: We examined the predictive ability of anti-Müllerian hormone (AMH) for clinical pregnancy in women who underwent in vitro fertilization (IVF) cycles in a short agonist protocol. DESIGN: This is a retrospective cohort study of 222 women undergoing their first IVF attempt between June 2010 and March 2016. Multivariate logistic regression analysis was performed to evaluate the independent associations between clinical pregnancy and its possible predictors...
April 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28741124/characterization-of-a-low-density-lipoprotein-receptor-lrp13-in-chinese-tongue-sole-cynoglossus-semilaevis-and-medaka-oryzias-latipes
#2
Na Wang, Ruoqing Wang, Qiaomu Hu, Wenteng Xu, Ying Zhu, Fang Yan, Songlin Chen
As an important economic marine species cultured in China, Chinese tongue sole (Cynoglossus semilaevis) has interested us due to its sexual dimorphism and ZW/ZZ sex determination system. In a previous study, dmrt1 was identified as a dosage-dependent male-determining gene. In the present study, a female-specific expressed gene, cse0440, initially annotated as lrp1b-like, was identified from chromosome W of C. semilaevis. In view of the differences between cse0440 and lrp1b in terms of expression pattern, a phylogenetic analysis containing 85 LRP proteins was constructed and provided an evidence to re-annotate cse0440 as cseLRP13...
July 24, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28739725/high-efficient-screening-method-for-identification-of-key-genes-in-breast-cancer-through-microarray-and-bioinformatics
#3
Zihao Liu, Gehao Liang, Luyuan Tan, A N Su, Wenguo Jiang, Chang Gong
BACKGROUND/AIM: The aim of the present study was to identify key pathways and genes in breast cancer and develop a new method for screening key genes with abnormal expression based on bioinformatics. MATERIALS AND METHODS: Three microarray datasets GSE21422, GSE42568 and GSE45827 were downloaded from the Gene Expression Omnibus (GEO) database and differentially expressed genes (DEGs) were analyzed using GEO2R. The gene ontology (GO) and pathway enrichment analysis were established through DAVID database...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28739643/histone-methyltransferase-dot1l-is-a-coactivator-for-thyroid-hormone-receptor-during-xenopus-development
#4
Luan Wen, Liezhen Fu, Yun-Bo Shi
Histone modifications are associated with transcriptional regulation by diverse transcription factors. Genome-wide correlation studies have revealed that histone activation marks and repression marks are associated with activated and repressed gene expression, respectively. Among the histone activation marks is histone H3 K79 methylation, which is carried out by only a single methyltransferase, disruptor of telomeric silencing-1-like (DOT1L). We have been studying thyroid hormone (T3)-dependent amphibian metamorphosis in two highly related species, the pseudo-tetraploid Xenopus laevis and diploid Xenopus tropicalis, as a model for postembryonic development, a period around birth in mammals that is difficult to study...
July 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28739571/splice-variants-of-ph-sensitive-chloride-channel-identify-a-key-determinant-of-ivermectin-sensitivity-in-the-larvae-of-the-silkworm-bombyx-mori
#5
Daiki Okuhara, Shogo Furutani, Katsuhiko Ito, Makoto Ihara Ihara, Kazuhiko Matsuda
The pH-sensitive chloride channels (pHCls) are broadly expressed in insects, but little is known about their physiological role, diversity and sensitivity to insecticides acting on relevant chloride channels. Here we have sequenced 50 transcripts of the pHCl-1 gene from the brain, third thoracic ganglion (T3G) and midgut of larvae of silkworm Bombyx mori. It was found that >50 variants were expressed with distinct splicing in the T3G compared to the brain and midgut. Of the variants detected, variant 9, which was expressed most abundantly in the larvae, was reconstituted in Xenopus laevis oocytes to characterise its pH- and ivermectin sensitivity...
July 24, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28739335/weight-decrease-improves-live-birth-rates-in-obese-women-undergoing-ivf-a-pilot-study
#6
Juan J Espinós, Ana Polo, Juan Sánchez-Hernández, Ramón Bordas, Pere Pares, Olga Martínez, Joaquim Calaf
Obese women have lower pregnancy rates than normal-weight women undergoing assisted reproductive treatment. We conducted a pilot study to evaluate whether a 12-week diet and exercise intervention before an IVF cycle would influence pregnancy rates in obese women. Forty-one patients were enrolled in this study. They were randomly allocated to two groups: an intervention group (n = 21), who underwent an individualized diet and physical exercise programme supervised by a dietician, and a control group (n = 20), who started IVF with no previous intervention...
July 6, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28739117/update-on-fertility-preservation-from-the-barcelona-international-society-for-fertility-preservation-eshre-asrm-2015-expert-meeting-indications-results-and-future-perspectives
#7
Francisca Martinez
STUDY QUESTION: What progress has been made in fertility preservation (FP) over the last decade? SUMMARY ANSWER: FP techniques have been widely adopted over the last decade and therefore the establishment of international registries on their short- and long-term outcomes is strongly recommended. WHAT IS KNOWN ALREADY: FP is a fundamental issue for both males and females whose future fertility may be compromised. Reproductive capacity may be seriously affected by age, different medical conditions and also by treatments, especially those with gonadal toxicity...
July 20, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28738802/histological-and-transcriptomic-effects-of-17%C3%AE-methyltestosterone-on-zebrafish-gonad-development
#8
Stephanie Ling Jie Lee, Julia A Horsfield, Michael A Black, Kim Rutherford, Amanda Fisher, Neil J Gemmell
BACKGROUND: Sex hormones play important roles in teleost ovarian and testicular development. In zebrafish, ovarian differentiation appears to be dictated by an oocyte-derived signal via Cyp19a1a aromatase-mediated estrogen production. Androgens and aromatase inhibitors can induce female-to-male sex reversal, however, the mechanisms underlying gonadal masculinisation are poorly understood. We used histological analyses together with RNA sequencing to characterise zebrafish gonadal transcriptomes and investigate the effects of 17α-methyltestosterone on gonadal differentiation...
July 24, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28738736/bacterial-vaginosis-and-the-risk-of-early-miscarriage-in-women-undergoing-intracytoplasmic-sperm-injection-cycles-a-prospective-cohort-study
#9
Ashraf Moini, Ladan Mohammadi Yeganeh, Marzieh Shiva, Malihe Ahmadieh, Reza Salman Yazdi, Fatemeh Hasani, Narges Bagheri Lankarani, Azam Sanati
This study aimed to assess the possible association of bacterial vaginosis (BV) and early miscarriage in 408 women undergoing intracytoplasmic sperm injection (ICSI) for reasons of male infertility. A vaginal sample was obtained before oocyte retrieval and evaluated for BV-associated bacteria using the Nugent scoring system. The primary outcome was early miscarriage and the secondary outcomes included implantation, pregnancy, late miscarriage, preterm delivery and live birth rates. Chi-square, ANOVA, relative risk and odds ratio were used for data analysis where appropriate...
July 24, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28738699/caspase-3-gene-expression-in-human-luteinized-granulosa-cells-is-inversely-correlated-with-the-number-of-oocytes-retrieved-after-controlled-ovarian-stimulation
#10
Verônica N Lobach, Maíra Casalechi, Cynthia Dela Cruz, Maria T Pereira, Helen L Del Puerto, Fernando M Reis
Granulosa cells control oocyte maturation through paracrine signalling and changes to the microenvironment around the oocyte. Apoptosis occurs as a physiological mechanism of granulosa cell renewal, but how it relates with the ovarian response to induced ovulation is still unclear. Therefore, this study evaluated apoptosis-related gene expression levels in granulosa cells of patients undergoing controlled ovarian stimulation. We enrolled prospectively 59 consecutive IVF patients referred to a tertiary academic hospital for couple infertility treatment...
July 25, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28738285/molecular-assessment-characterization-and-differentiation-of-theca-stem-cells-imply-the-presence-of-mesenchymal-and-pluripotent-stem-cells-in-sheep-ovarian-theca-layer
#11
Samane Adib, Mojtaba Rezazadeh Valojerdi
The ability of ovarian theca stem cells to differentiate into oocyte and theca cells may lead to a major advancement in reproductive biology and infertility treatments. However, there is little information about function, growth and differentiation potential of these immature cells. In this study adult sheep theca stem cells (TSCs) characteristics, and differentiation potential into osteocyte-like cells (OSLCs), adipocyte-like cells (ALCs), theca progenitor-like cells (TPCs), and oocyte-like cells (OLCs) were investigated...
July 8, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28737775/fertility-preservation-issues-in-pediatric-hematopoietic-stem-cell-transplantation-practical-approaches-from-the-consensus-of-the-pediatric-diseases-working-party-of-the-ebmt-and-the-international-bfm-study-group
#12
A Balduzzi, J-H Dalle, K Jahnukainen, M von Wolff, G Lucchini, M Ifversen, K T Macklon, C Poirot, T Diesch, A Jarisch, D Bresters, I Yaniv, B Gibson, A M Willasch, R Fadini, L Ferrari, A Lawitschka, A Ahler, N Sänger, S Corbacioglu, M Ansari, R Moffat, A Dalissier, E Beohou, P Sedlacek, A Lankester, C D De Heredia Rubio, K Vettenranta, J Wachowiak, A Yesilipek, E Trigoso, T Klingebiel, C Peters, P Bader
Fertility preservation is an urgent challenge in the transplant setting. A panel of transplanters and fertility specialists within the Pediatric Diseases Working Party of the European Society for Blood and Marrow Transplantation (EBMT) and the International BFM Study Group provides specific guidelines. Patients and families should be informed of possible gender- and age-specific cryopreservation strategies that should be tailored according to the underlying disease, clinical condition and previous exposure to chemotherapy...
July 24, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28737671/age-related-loss-of-cohesion-causes-and-effects
#13
REVIEW
Jin-Mei Cheng, Yi-Xun Liu
Aneuploidy is a leading genetic cause of birth defects and lower implantation rates in humans. Most errors in chromosome number originate from oocytes. Aneuploidy in oocytes increases with advanced maternal age. Recent studies support the hypothesis that cohesion deterioration with advanced maternal age represents a leading cause of age-related aneuploidy. Cohesin generates cohesion, and is established only during the premeiotic S phase of fetal development without any replenishment throughout a female's period of fertility...
July 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28737271/in-vitro-fertilization-and-pregnancy-management-in-a-woman-with-acquired-idiopathic-chylous-ascites
#14
Ai Sakamoto, Yasuhiko Kamada, Sayoko Kotani, Kiyoshi Yamada, Yoshihiro Kimata, Yuji Hiramatsu
Acquired idiopathic chylous ascites is extremely rare in women of reproductive age. This is the first report describing successful infertility and pregnancy management in a patient with idiopathic chylous ascites. A 23-year-old woman presented with abdominal distention and was diagnosed with idiopathic fluid collection. A lymphogram revealed lymphatic leakage from the right renal hilum. Lymphatic-venous anastomosis of the thoracic duct was performed thrice, but the chylous ascites persisted. In vitro fertilization was performed because natural conception was not possible...
July 24, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28736919/a-g326e-substitution-in-the-glutamate-gated-chloride-channel-3-glucl3-of-the-two-spotted-spider-mite-tetranychus-urticae-abolishes-the-agonistic-activity-of-macrocyclic-lactones
#15
Catherine Mermans, Wannes Dermauw, Sven Geibel, Thomas Van Leeuwen
BACKGROUND: The macrocyclic lactones abamectin and milbemectin are frequently used to control phytophagous mites such as Tetranychus urticae. Consequently, resistance has developed and was genetically linked with substitutions in the glutamate-gated chloride channel (GluCl) subunits TuGluCl1 and TuGluCl3. Here, we functionally validated a G326E substitution in TuGluCl3 by functional expression in Xenopus laevis oocytes followed by two-electrode voltage-clamp electrophysiology. RESULTS: Homomeric wild-type and mutated GluCl3 were successfully expressed...
July 24, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28736861/azadirachtin-effects-on-mating-success-gametic-abnormalities-and-progeny-survival-in-drosophila-melanogaster-diptera
#16
Chemseddine M Oulhaci, Béatrice Denis, Samira Kilani-Morakchi, Jean-Christophe Sandoz, Laure Kaiser, Dominique Joly, Nadia Aribi
BACKGROUND: Azadirachtin is a prominent natural pesticide and represents an alternative to conventional insecticides. It has been successfully used against insect pests. However, its effects on reproduction require further analysis. Here we investigated lethal and sublethal effects of azadirachtin, on treated adults in a model insect, Drosophila melanogaster (Meigen). Dose-mortality relationships as well as several parameters of reproduction (mating, spermatogenesis, oogenesis and fertility) were examined...
July 24, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28736370/-pregnancy-and-obstetric-outcomes-of-fresh-embryo-transfer-versus-frozen-thawed-embryo-transfer-in-women-below-35-years-of-age
#17
Ling Sun, Zhi-Heng Chen, Min-Na Yin, Yu Deng
OBJECTIVE: To compare the obstetric and perinatal outcomes between fresh embryo transfer (ET) and frozen-thawed ET (the "freeze-all" strategy) and evaluate the benefits of the "freeze-all" embryo strategy for young patients. METHODS: We reviewed a total of 2091 ET cycles performed between January, 2011 and December, 2015 in women aged 20-35 years, including 1295 fresh ET cycles and 796 frozen-thawed ET cycles. The demographic characteristics, ovarian stimulation syndrome, clinical pregnancy rates, live birth rate and the obstetric outcomes (gestational age, preterm delivery rate and mean birth weight) were compared between the two groups...
July 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28736365/-blighted-ovum-in-subfertile-patients-undergoing-assisted-reproductive-technology
#18
Qing-Wen Nie, Rui Hua, Yao Zhou, Hong Li, Yan-Hong Yu
OBJECTIVE: To explore the incidence and risk factors of blighted ovum in subfertile patients undergoing assisted reproductive technology (ART). METHODS: This retrospective analysis was conducted among 2378 patients who were pregnant following embryo transfer at our center from January, 2012 to December, 2015, including cases of early pregnancy losses and simultaneous live births. The cases with early pregnancy losses were divided into embryonic pregnancy and blighted ovum groups based on the presence or absence of an embryonic pole before dilation and curettage...
July 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28736154/retinoic-acid-induces-differentiation-of-buffalo-bubalus-bubalis-embryonic-stem-cells-into-germ-cells
#19
Syed Mohmad Shah, Suresh Kumar Singla, Prabhat Palta, Radhey Sham Manik, Manmohan Singh Chauhan
Development of precise and reproducible culture system for in vitro differentiation of embryonic stem (ES) cells into germ cells counts as a major leap forward for understanding not only the remarkable process of gametogenesis, otherwise obscured by limited availability of precursor primordial germ cells (PGCs), but in finally treating the catastrophic infertility. Taking into account the significant role of retinoic acid (RA) during in vivo gametogenesis, we designed the present study to investigate the effects of its stimulation on directing the differentiation of ES cells into germ cells...
July 19, 2017: Gene
https://www.readbyqxmd.com/read/28735888/differential-expression-of-subunits-of-20%C3%AE-hydroxysteroid-dehydrogenase-during-gametogenesis-in-rainbow-trout-oncorhychus-mykiss
#20
Arya Vazirzadeh, Yann Guiguen
The patterns of expression of two subunits of 20β-hydroxysteroid dehydrogenase (20β-HSD), key enzyme involved in the biosynthesis and activation of steroid hormones, were examined in rainbow trout by using a combination of quantitative real-time PCR and in-situ hybridization. The expression of targeted genes was examined in mRNA extracted from different tissues at different gonadal stages in male and female trout. Both subunits of 20β-HSD were found to be widely distributed in tissues. The highest expression of 20β-HSD A was found in intestine followed by skin, stomach, liver and gills, whereas, the highest expression of 20β-HSD B was observed in stomach followed by head kidney, ovary - at late vitellogenesis stage- and trunk kidney...
July 14, 2017: Animal Reproduction Science
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