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Reproductive Biology and Endocrinology: RB&E

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https://www.readbyqxmd.com/read/30007408/age-related-morphometrical-peculiarities-of-lithuanian-women-s-primordial-ovarian-follicles
#1
Kristina Lasiene, Donatas Gasiliunas, Nomeda Juodziukyniene, Aleksandras Vitkus
BACKGROUND: For the first time, thorough morphometrical measurements of primordial ovarian follicles were performed and their age-related changes were investigated in Lithuanian women of the reproductive age. METHODS: Ovaries of dead women (n = 30) were divided into six age groups: 15-20 years old, 21-25 years old, 26-30 years old, 31-35 years old, 36-40 years old and 41-46 years old. Histological slides of left and right ovaries were stained using haematoxylin-eosin and periodic acid-Schiff (PAS) staining methods...
July 14, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29981579/fmr1-expression-in-human-granulosa-cells-increases-with-exon-1-cgg-repeat-length-depending-on-ovarian-reserve
#2
Julia Rehnitz, Diego D Alcoba, Ilma S Brum, Jens E Dietrich, Berthe Youness, Katrin Hinderhofer, Birgitta Messmer, Alexander Freis, Thomas Strowitzki, Ariane Germeyer
BACKGROUND: Fragile-X-Mental-Retardation-1- (FMR1)-gene is supposed to be a key gene for ovarian reserve and folliculogenesis. It contains in its 5'-UTR a triplet-base-repeat (CGG), that varies between 26 and 34 in general population. CGG-repeat-lengths with 55-200 repeats (pre-mutation = PM) show instable heredity with a tendency to increase and are associated with premature-ovarian-insufficiency or failure (POI/POF) in about 20%. FMR1-mRNA-expression in leucocytes and granulosa cells (GCs) increases with CGG-repeat-length in PM-carriers, but variable FMR1-expression profiles were also described in women with POI without PM-FMR1 repeat-length...
July 7, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29980195/reproductive-outcomes-in-women-with-unicornuate-uterus-undergoing-in-vitro-fertilization-a-nested-case-control-retrospective-study
#3
Yanrong Chen, Victoria Nisenblat, Puyu Yang, Xinyu Zhang, Caihong Ma
BACKGROUND: Unicornuate uterus, a congenital uterine malformation resulting from unilateral maldevelopment of Mullerian duct, is more prevalent in women with infertility. Owing to relative rarity of the condition, the evidence on the associated reproductive outcomes is derived from small heterogeneous studies that report different clinical endpoints and often do not account for the anatomical variations of unicornuate uterus. The aim of this study was to evaluate the embryological and clinical outcomes following IVF-ICSI treatment in women with unicornuate uterus without rudimentary functional cavity (ESHRE-ESGE class IVb)...
July 6, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29976200/art-manipulation-after-controlled-ovarian-stimulation-may-not-increase-the-risk-of-abnormal-expression-and-dna-methylation-at-some-cpg-sites-of-h19-igf2-and-snrpn-in-foetuses-a-pilot-study
#4
Menglu Ji, Xingling Wang, Wenbin Wu, Yichun Guan, Jing Liu, Jingyan Wang, Wenxia Liu, Chunyan Shen
BACKGROUND: To examine the effects of IVF, ICSI and FET, as well as in vitro culture, on the safety of offspring, this study was conducted from the perspective of genetic imprinting to investigate whether assisted reproductive technology would influence the parental and maternal imprinting genes. METHODS: Eighteen foetuses were collected from multifoetal reduction and divided into 6 groups: multifoetal reduction after IVF fresh transferred D3 embryos (n = 3), multifoetal reduction after IVF frozen transferred D3 embryos (n = 3), multifoetal reduction after IVF frozen transferred D5 embryos (n = 3), multifoetal reduction after ICSI fresh transferred D3 embryos (n = 3), multifoetal reduction after ICSI frozen transferred D3 embryos (n = 3), and multifoetal reduction after controlled ovarian hyperstimulation (COH) (n = 3)...
July 5, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29935533/sugar-sweetened-beverage-intake-and-serum-testosterone-levels-in-adult-males-20-39-years-old-in-the-united-states
#5
Liang Chen, Yu-Mei Xie, Jian-Hao Pei, Jian Kuang, Hong-Mei Chen, Zhong Chen, Zhong-Wen Li, Xiao-Ying Fu, Long Wang, Shui-Qing Lai, Shu-Ting Zhang, Zhi-Jiang Chen, Jin-Xin Lin
BACKGROUND: This population-based study was designed to investigate whether consumption of sugar-sweetened beverages (SSB) is associated with lower serum total testosterone concentration in men 20-39 years old. METHODS: All data for this study were retrieved from the National Health and Nutrition Examination Survey (NHANES) 2011-2012. The primary outcome was serum testosterone concentration, and main independent variable was SSB intake. Other variables included age, race/ethnicity, poverty/income ratio, body mass index (BMI), serum cotinine, heavy drinking, and physical activity...
June 23, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29935526/melatonin-inhibits-17%C3%AE-estradiol-induced-migration-invasion-and-epithelial-mesenchymal-transition-in-normal-and-endometriotic-endometrial-epithelial-cells
#6
Shasha Qi, Lei Yan, Zhao Liu, Yu-Lan Mu, Mingjiang Li, Xingbo Zhao, Zi-Jiang Chen, Hui Zhang
BACKGROUND: Melatonin is a potential therapeutic agent for endometriosis, but its molecular mechanism is unclear. Here, we investigated the effect of melatonin on the epithelial-mesenchymal transition (EMT) in endometriotic endometrial epithelial cells and explored the pathway that might be involved. METHODS: This hospital-based study included 60 women of reproductive age using the endometrium for immunohistochemistry, 6 women of reproductive age undergoing bilateral tubal ligation and 6 patients with endometriosis for isolation of endometrial epithelial cells or subsequent analysis, respectively...
June 23, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29929546/decreased-muc1-in-endometrium-is-an-independent-receptivity-marker-in-recurrent-implantation-failure-during-implantation-window
#7
Fangrong Wu, Xiaoyan Chen, Yingyu Liu, Bo Liang, Hui Xu, Tin Chiu Li, Chi Chiu Wang
BACKGROUND: It is postulated that women suffered from recurrent implantation failure (RIF) have different endometrial receptivity compared to those who experienced with idiopathic recurrent miscarriage (RM). In this study, expression of common endometrial markers Leukemia inhibitor factor (LIF), mucin 1 (MUC1) and integrin β3 were studied and compared. METHODS: Fourteen women with RIF, 25 with RM and 20 fertile controls were recruited for endometrial biopsy during implantation window on day LH +  7...
June 21, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29925391/effects-of-levonorgestrel-and-progesterone-on-oviductal-physiology-in-mammals
#8
Cheng Li, Hui-Yu Zhang, Yan Liang, Wei Xia, Qian Zhu, Duo Zhang, Zhen Huang, Gui-Lin Liang, Rui-Hong Xue, Hang Qi, Xiao-Qing He, Jiang-Jing Yuan, Ya-Jing Tan, He-Feng Huang, Jian Zhang
BACKGROUND: Our previous study indicated that emergency contraception, including levonorgestrel and progesterone, could lead to ectopic pregnancy following contraception failure. However, our understanding of the effects of levonorgestrel and progesterone on oviductal physiology is limited. METHODS: The receptivity of the fallopian tubal epithelium after levonorgestrel and progesterone treatment was examined through western blots for receptivity markers and JAr-spheroid-fallopian tubal epithelial cell attachment assays...
June 20, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29895300/papp-a2-deficiency-does-not-exacerbate-the-phenotype-of-a-mouse-model-of-intrauterine-growth-restriction
#9
Julian K Christians, Kendra I Lennie, Maria F Huicochea Munoz, Nimrat Binning
BACKGROUND: Pregnancy-associated plasma protein-A2 (PAPP-A2) is consistently upregulated in the placentae of pregnancies complicated by preeclampsia and fetal growth restriction. The causes and significance of this upregulation remain unknown, but it has been hypothesized that it is a compensatory response to improve placental growth and development. We predicted that, if the upregulation of PAPP-A2 in pregnancy complications reflects a compensatory response, then deletion of Pappa2 in mice would exacerbate the effects of a gene deletion previously reported to impair placental development: deficiency of matrix metalloproteinase-9 (MMP9)...
June 12, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29859541/the-thermo-sensitive-gene-expression-signatures-of-spermatogenesis
#10
Santosh K Yadav, Aastha Pandey, Lokesh Kumar, Archana Devi, Bhavana Kushwaha, Rahul Vishvkarma, Jagdamba P Maikhuri, Singh Rajender, Gopal Gupta
BACKGROUND: Spermatogenesis in most mammals (including human and rat) occurs at ~ 3 °C lower than body temperature in a scrotum and fails rapidly at 37 °C inside the abdomen. The present study investigates the heat-sensitive transcriptome and miRNAs in the most vulnerable germ cells (spermatocytes and round spermatids) that are primarily targeted at elevated temperature in a bid to identify novel targets for contraception and/or infertility treatment. METHODS: Testes of adult male rats subjected to surgical cryptorchidism were obtained at 0, 24, 72 and 120 h post-surgery, followed by isolation of primary spermatocytes and round spermatids and purification to > 90% purity using a combination of trypsin digestion, centrifugal elutriation and density gradient centrifugation techniques...
June 2, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29859539/comparison-of-the-enzymatic-efficiency-of-liberase-tm-and-tumor-dissociation-enzyme-effect-on-the-viability-of-cells-digested-from-fresh-and-cryopreserved-human-ovarian-cortex
#11
Viola Maria Schmidt, Vladimir Isachenko, Gunter Rappl, Gohar Rahimi, Bettina Hanstein, Bernd Morgenstern, Peter Mallmann, Evgenia Isachenko
BACKGROUND: The aim of this study was to examine the effectiveness of Tumor Dissociation Enzyme (TDE) on the viability of follicles after digestion of fresh and cryopreserved ovarian cortex fragments (OCFs). METHODS: Fresh and thawed OCF from 14 patients (29 ± 6 years), sized 20 to 210 mm3 were randomly distributed into four treatment groups and digested with 16% TDE or 0.05 mg/ml Liberase TM: Group 1, frozen OCF digested with TDE; Group 2, frozen OCF digested with LiberaseTM; Group 3, fresh OCF digested with TDE; and Group 4, fresh OCF digested with Liberase TM...
June 2, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29855380/exogenous-leptin-affects-sperm-parameters-and-impairs-blood-testis-barrier-integrity-in-adult-male-mice
#12
Xiaotong Wang, Xiaoke Zhang, Lian Hu, Honggang Li
BACKGROUND: Serum leptin levels are augmented in obese infertile men and in men with azoospermia. They also correlate inversely with sperm concentration, motility and normal forms. The mechanisms underlying the adverse effects of excess leptin on male reproductive function remain unclear. The present study aimed to evaluate the effects of exogenous leptin on sperm parameters in mice and to explore the underlying mechanisms. METHODS: We treated normal adult male mice with saline, 0...
May 31, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29843716/the-vegf-and-pedf-levels-in-the-follicular-fluid-of-patients-co-treated-with-letrozole-and-gonadotropins-during-the-stimulation-cycle
#13
Jigal Haas, Rawad Bassil, Noa Gonen, Jim Meriano, Andrea Jurisicova, Robert F Casper
BACKGROUND: Previous studies have shown that androgens, in addition to serving as precursors for ovarian estrogen synthesis, also have a fundamental role in primate ovarian follicular development by augmentation of FSH receptor expression on granulosa cells. Recent studies have shown that aromatase inhibitor, letrozole, improves ovarian response to FSH in normal and poor responder patients, possibly by increasing intraovarian androgen levels. Studies in mice also showed an effect of letrozole to increase pigment epithelium-derived factor (PEDF) and to lower vascular epithelial growth factor (VEGF), which might be expected to reduce the risk of ovarian hyperstimulation syndrome (OHSS) with stimulation...
May 29, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29807533/progestin-primed-milder-stimulation-with-clomiphene-citrate-yields-fewer-oocytes-and-suboptimal-pregnancy-outcomes-compared-with-the-standard-progestin-primed-ovarian-stimulation-in-infertile-women-with-polycystic-ovarian-syndrome
#14
Hongjuan Ye, Hui Tian, Wen He, Qifeng Lyu, Yanping Kuang, Qiuju Chen, Lihua Sun
BACKGROUND: Oral progestin has recently been used to prevent premature LH surges in ovarian stimulation, and this progestin-primed ovarian stimulation (PPOS) is effective and safe in patients with different ovarian reserves. The current data are lacking regarding how to individualize the gonadotropin dose and regimen for women with polycystic ovarian syndrome (PCOS). A retrospective cohort trial was performed to evaluate the efficacy of progestin-primed milder stimulation with clomiphene citrate (CC) compared to the standard progestin-primed ovarian stimulation (PPOS) protocol for infertile women with PCOS...
May 28, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29803227/follicle-stimulating-hormone-fsh-promotes-retinol-uptake-and-metabolism-in-the-mouse-ovary
#15
Zhuo Liu, Yongfeng Sun, Yanwen Jiang, Yuqiang Qian, Shuxiong Chen, Shan Gao, Lu Chen, Chunjin Li, Xu Zhou
BACKGROUND: Retinoids (retinol and its derivatives) are required for the development and maintenance of normal physiological functions of the ovary. However, the mechanisms underlying the regulation of ovarian retinoid homeostasis during follicular development remain unclear. METHODS: The present study determined retinoid levels and the expression levels of genes involved in the retinol uptake and its metabolic pathway in the ovaries of follicle-stimulating hormone (FSH)-treated mice and in granulosa cells treated with FSH using ultra performance liquid chromatography (UPLC) combined with quadrupole time-of-flight high-sensitivity mass spectrometry (Q-TOF/HSMS) and real-time PCR analysis...
May 26, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29801455/identification-and-characterization-of-micrornas-in-the-pituitary-of-pubescent-goats
#16
Jing Ye, Zhiqiu Yao, Wenyu Si, Xiaoxiao Gao, Chen Yang, Ya Liu, Jianping Ding, Weiping Huang, Fugui Fang, Jie Zhou
BACKGROUND: Puberty is the period during a female mammal's life when it enters estrus and ovulates for the first time; this indicates that a mammal is capable of reproduction. The onset of puberty is a complex and tightly coordinated biological event; it has been reported that microRNAs (miRNAs) are involved in regulating the initiation of puberty. METHODS: We performed miRNA sequencing on pituitary tissue from prepubescent and pubescent goats to investigate differences in miRNA expression during the onset of puberty in female goats...
May 25, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29793502/deficiency-of-gpr1-improves-steroid-hormone-abnormality-in-hyperandrogenized-mice
#17
Ya-Li Yang, Li-Feng Sun, Yan Yu, Tian-Xia Xiao, Bao-Bei Wang, Pei-Gen Ren, Hui-Ru Tang, Jian V Zhang
BACKGROUND: Polycystic ovary syndrome (PCOS) is a complex genetic disease with multifarious phenotypes. Many researches use dehydroepiandrosterone (DHEA) to induce PCOS in pubertal mouse models. The aim of this study was to investigate the role of GPR1 in dehydroepiandrosterone (DHEA)-induced hyperandrogenized mice. METHODS: Prepubertal C57BL/6 mice (25 days of age) and Gpr1-deficient mice were each divided into two groups and injected daily with sesame oil with or without DHEA (6 mg/100 g) for 21 consecutive days...
May 24, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29778100/associations-of-sperm-dna-fragmentation-with-lifestyle-factors-and-semen-parameters-of-saudi-men-and-its-impact-on-icsi-outcome
#18
Basmah Al Omrani, Nadia Al Eisa, Murid Javed, Maher Al Ghedan, Hamoud Al Matrafi, Hamad Al Sufyan
BACKGROUND: Male factor infertility is quite common as 30-50% of infertility cases are due to sperm defects. The high sperm DNA fragmentation is one of the causes of male factor infertility. Many factors cause sperm DNA fragmentation and could be testicular or post-testicular. The purpose of this study was to assess relationships among sperm DNA fragmentation, lifestyle factors and semen values of Saudi men and to determine impact of sperm DNA fragmentation on ICSI cycle outcome. METHODS: The duration of this study was from January 2015 to June 2016...
May 19, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29753325/effects-of-pelvic-endometriosis-and-adenomyosis-on-ciliary-beat-frequency-and-muscular-contractions-in-the-human-fallopian-tube
#19
Wei Xia, Duo Zhang, Jing Ouyang, Yan Liang, Huiyu Zhang, Zhen Huang, Guiling Liang, Qian Zhu, Xiaoming Guan, Jian Zhang
BACKGROUND: Pelvic endometriosis (EM) and adenomyosis (AM) have different effects on the fallopian tube. This study aimed to assess the transport capability of the fallopian tube in women with pelvic EM or AM. METHODS: Twenty women with uterine leiomyoma (control group), 20 with adenomyosis without pelvic EM (AM group) and 35 with pelvic EM without AM (EM group) were included. EM cases were further divided into the tubal EM and non-tubal EM subgroups. Ciliary beat frequency (CBF), percentage of ciliated cells, and smooth muscle contraction were measured...
May 12, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29751768/the-preclinical-evaluation-of-immunocontraceptive-vaccines-based-on-canine-zona-pellucida-3-czp3-in-a-mouse-model
#20
Ying Wang, Yijie Li, Beibei Zhang, Fuchun Zhang
BACKGROUND: Stray dogs are the reservoirs and carriers of rabies and are definitive hosts of echinococcosis. To control the overpopulation of stray dogs, zona pellucida 3 (ZP3), a primary receptor for sperm, is a potential antigen for developing contraceptive vaccines. To enhance the immune responses and contraceptive effects of canine ZP3 (cZP3), dog gonadotropin-releasing hormone (GnRH) and a T cell epitope of chicken ovalbumin (OVA) were selected to construct two fusion proteins with cZP3, ovalbumin-GnRH-ZP3 (OGZ) and ovalbumin-ZP3 (OZ), and their contraceptive effects were evaluated in mice...
May 11, 2018: Reproductive Biology and Endocrinology: RB&E
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