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https://www.readbyqxmd.com/read/29925074/a-retrospective-study-of-letrozole-treatment-prior-to-human-chorionic-gonadotropin-in-women-with-polycystic-ovary-syndrome-undergoing-in-vitro-fertilization-at-risk-of-ovarian-hyperstimulation-syndrome
#1
Yilu Chen, Tanchu Yang, Cuifang Hao, Junzhao Zhao
BACKGROUND Women with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization (IVF) are given letrozole before a trigger injection of human chorionic gonadotropin (hCG) to lower estrogen (E2) levels, but can experience ovarian hyperstimulation syndrome (OHSS). The aim of this study was to evaluate the effect of oral letrozole, prior to administration of hCG, on the outcome of IVF and development of OHSS. MATERIAL AND METHODS Retrospective clinical review included 181 cases of women with PCOS who underwent IVF cycles with intracytoplasmic sperm injection (ICSI) and embryo transfer (ET) (IVF/ICSI-ET)...
June 20, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29923352/isolation-and-in-vitro-culture-of-ovarian-stem-cells-in-chinese-soft-shell-turtle-pelodiscus-sinensis
#2
Hongyan Xu, Xinping Zhu, Wei Li, Zhoukai Tang, Yanyan Zhao, Xuling Wu
Gonadal cell lines provide valuable tools for studying gametogenesis, sex differentiation, and manipulating germ cells in reproductive biology. Female germline stem cells have been characterized and isolated from ovaries of mammalian species, including mice and human, but there has been very few studies on female germline stem cells in reptiles. Here, we described an ovarian stem cell-like line isolated and cultured from the Chinese soft-shell turtle (Pelodiscus sinensis), designated as PSO1. The cells showed high alkaline phosphatase activity with a normal diploid karyotype...
June 20, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29923290/mycotoxin-zearalenone-induced-gonadal-impairment-and-altered-gene-expression-in-the-hypothalamic-pituitary-gonadal-axis-of-adult-female-zebrafish-danio-rerio
#3
Sellamani Muthulakshmi, Pourmohammadi Fallah Hamideh, Hamid R Habibi, Kannan Maharajan, Krishna Kadirvelu, Venkataramana Mudili
In the present study, we aimed to assess the adverse effects of zearalenone (ZEA) at environmentally relevant concentrations (0.5, 1, 5 and 10 μg l-1 ) on hypothalamic-pituitary-gonadal axis associated reproductive function using zebrafish model. ZEA was exposed to female zebrafish for 21 days to assess growth indices such as condition factor, hepatosomatic index, gonadosomatic index and caspase 3 activity. Further, expression of estrogen receptor (ER) α and CYP19a1b genes in the brain, ERα and vitellogenin (Vtg) genes in the liver and follicle-stimulating hormone receptor, luteinizing hormone receptor, ERα, steroidogenic acute regulatory protein, 3β-hydroxysteroid dehydrogenase (HSD), 17-βHSD and CYP19a1 genes in the ovary were also investigated...
June 19, 2018: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29923210/functional-comparison-of-high-and-low-molecular-weight-basic-fibroblast-growth-factors
#4
Keiko Motozawa, Mitsuru Motoyoshi, Akari Saiki, Hideto Sasaki, Noriyoshi Shimizu, Masatake Asano
Acid-electrolyzed functional water (FW) is obtained through the electrolysis of sodium chloride solution. Stimulation of the human fibroblastic cell line HeLa by FW led to the augmented secretion of basic fibroblast growth factor (bFGF). Immunoprecipitation followed by Western blot analysis revealed that both high and low molecular weight isoforms of bFGF were secreted in response to FW treatment. To explore intracellular bFGF localization, a cell fractionation assay was performed. Despite the presence of nuclear localization signals within the N-terminal portion of these proteins, the high molecular weight isoforms (34, 24, 22...
June 20, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29923198/promotion-of-the-prehierarchical-follicle-growth-by-postovulatory-follicles-involving-pge-2-ep2-signaling-in-chickens
#5
Xin Lin, Xingting Liu, Changquan Guo, Mengqi Liu, Yuling Mi, Caiqiao Zhang
The postovulatory follicle (POF) in birds is an enigmatic structure, the function of which remains largely unknown. Previous studies on chickens have shown that removal of POFs leads to the postponement of oviposition and the disturbance of broody behavior. One suggestion is that POFs may secrete some crucial hormones or cytokines to act on reproductive organs. However, such secretions and their specific target organs remain to be identified. Here, we investigate the putative functions of POFs in promoting the development of prehierarchical follicles in chickens and explore the possible signaling mechanisms controlling these processes...
June 19, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29923054/ultra-low-carbon-dioxide-partial-pressure-improves-the-galactosylation-of-a-monoclonal-antibody-produced-in-chinese-hamster-ovary-cells-in-a-bioreactor
#6
Chen Wang, Jiaqi Wang, Min Chen, Li Fan, Liang Zhao, Wen-Song Tan
OBJECTIVE: To explore the influence of ultra-low carbon dioxide partial pressure (pCO2 ) on the monoclonal antibody (mAb) N-glycosylation profile in Chinese hamster ovary (CHO) cell culture. RESULTS: In fed-batch bioreactor cultures, lowering the pCO2 in the medium (< 25 mmHg) via increasing headspace aeration decreased the cell viability and mAb production in CHO cells. Additionally, mAb galactosylation under low pCO2 was approximately 27.45 ± 2.13%, noticeably higher than that observed under normal pCO2 (21...
June 19, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29922706/soy-protein-improves-tibial-whole-bone-and-tissue-level-biomechanical-properties-in-ovariectomized-and-ovary-intact-low-fit-female-rats
#7
Pamela S Hinton, Laura C Ortinau, Rebecca K Dirkes, Emily L Shaw, Matthew W Richard, Terese Z Zidon, Steven L Britton, Lauren G Koch, Victoria J Vieira-Potter
Background: Osteoporosis and related fractures, decreased physical activity, and metabolic dysfunction are serious health concerns for postmenopausal women. Soy protein might counter the negative effects of menopause on bone and metabolic health due to the additive or synergistic effects of its bioactive components. Objective: To evaluate the effects of ovariectomy (OVX) and a soy-protein diet (SOY) on bone outcomes in female, low-capacity running (LCR) rats selectively bred for low aerobic fitness as a model of menopause...
June 2018: Bone Reports
https://www.readbyqxmd.com/read/29921567/diagnosis-and-follow-up-of-type-2-diabetes-in-women-with-pcos-a-role-of-ogtt
#8
Marianne Skovsager Andersen, Dorte Glintborg
Polycystic ovary syndrome (PCOS) is common in premenopausal women. The majority of women with PCOS have insulin resistance and the risk of type 2 diabetes mellitus (T2D) is higher in women with PCOS compared to controls. In non-pregnant women with PCOS, glycemic status may be assessed by oral glucose tolerance test (OGTT), fasting plasma glucose (FPG), or HbA1c. OGTT has been reckoned gold standard test for diagnosing T2D, but OGTT is rarely used for diagnostic purpose in other non-pregnant individuals at risk of T2D, apart from PCOS...
June 19, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29921434/no-362-ovulation-induction-in-polycystic-ovary-syndrome
#9
David S Smithson, Tannys D R Vause, Anthony P Cheung
OBJECTIVE: To review current non-pharmacologic and pharmacologic options for ovulation induction in women with polycystic ovary syndrome (PCOS). OPTIONS: This guideline reviews the evidence for the various options for ovulation induction in PCOS. OUTCOMES: Ovulation, pregnancy and live birth rates, risks, and side effects are the outcomes of interest. EVIDENCE: Published literature was retrieved through searches of Medline using appropriate controlled vocabulary and key words spanning from 2000 to 2016...
July 2018: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/29920869/involvement-of-the-luteinizing-hormone-surge-in-the-regulation-of-ovary-and-oviduct-clock-gene-expression-in-mice
#10
Momoko Kobayashi, Kaya Watanabe, Ritsuko Matsumura, Nozomi Anayama, Akio Miyamoto, Hitoshi Miyazaki, Koyomi Miyazaki, Takashi Shimizu, Makoto Akashi
Circadian dysfunction perturbs the female reproductive cycle. In particular, mice lacking the clock gene Bmal1 show severe infertility, implying that BMAL1 plays roles in ovulation and luteinization. Here, we examined temporal changes in clock gene expression in the ovary and oviduct before and during gonadotropin-induced follicular growth, ovulation, and luteinization in sexually immature mice. While the oviduct did not show a drastic change in clock gene expression, Bmal1 expression in the ovary was higher than that in control mice during the period from 4 to 16 hr after human chorionic gonadotropin (hCG) administration...
June 19, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29920365/tdrd1-is-a-germline-specific-and-sexually-dimorphically-expressed-gene-in-paralichthys-olivaceus
#11
Jun Zhao, Bo Wang, Haiyang Yu, Yujue Wang, Xiaobing Liu, Quanqi Zhang
Tudor domain containing protein 1 (tdrd1) is a member of the Tudor family and has shown essential functions during embryogenesis and gametogenesis. In this study, we cloned the full length cDNA of Paralichthys olivaceus tdrd1 (Potdrd1). PoTDRD1 is a multidomain protein with an N-terminal MYND zinc finger domain, followed by four tandem extended Tudor domains. Sequence comparison, genomic structure, phylogenetic analyses and synteny analyses showed that Potdrd1 was homologous to those of other teleosts. In adult individuals, the expression of Potdrd1 was higher in testis than in ovary, demonstrating a sexually dimorphic gene expression pattern...
June 16, 2018: Gene
https://www.readbyqxmd.com/read/29920292/novel-tumor-necrosis-factor-%C3%AE-induced-protein-eight-tnfaip8-tipe-family-functions-and-downstream-targets-involved-in-cancer-progression
#12
Ganesan Padmavathi, Kishore Banik, Javadi Monisha, Devivasha Bordoloi, Shabnam Bano, Frank Arfuso, Gautam Sethi, Fan Lu, Ajaikumar B Kunnumakkara
The tumor necrosis factor (TNF)-α- induced protein 8 (TNFAIP8/TIPE) family is a death effector domain (DED)-containing protein family with four identified members: TNFAIP8 (TIPE), TNFAIP8L1 (TIPE1), TNFAIP8L2 (TIPE2), and TNFAIP8L3 (TIPE3). These proteins were found to play crucial roles in the regulation of immune homeostasis, inflammation, and cancer development. Intensive research in the past two decades revealed a strong correlation of TIPE proteins with development of various cancers including cancers of the bladder, blood, bone, breast, cervix, colon, esophagus, endometrium, stomach, liver, lung, ovary, pancreas, prostate, and thyroid gland...
June 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29917317/meta-analysis-of-publicly-available-chinese-hamster-ovary-cho-cell-transcriptomic-datasets-for-identifying-engineering-targets-to-enhance-recombinant-protein-yields
#13
Linas Tamošaitis, C Mark Smales
Transcriptomics has been extensively applied to the investigation of the CHO cell platform for the production of recombinant biotherapeutic proteins to identify transcripts whose expression is regulated and correlated to (non)desirable CHO cell attributes. However, there have been few attempts to analyse the findings across these studies to identify conserved changes and generic targets for CHO cell platform engineering. Here we have undertaken a meta-analysis of CHO cell transcriptomic data and report on those genes most frequently identified as differentially expressed with regard to cell growth (µ) and productivity (Qp)...
June 19, 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29917177/the-role-of-mir-324-3p-in-polycystic-ovary-syndrome-pcos-via-targeting-wnt2b
#14
Y-C Jiang, J-X Ma
OBJECTIVE: To investigate the expression of microRNA-324-3p (miR-324-3p) in polycystic ovary syndrome (PCOS) and its effects on the proliferation and apoptosis of ovarian granulosa cells. MATERIALS AND METHODS: A total of 60 Sprague-Dawley (SD) rats were randomly divided into normal group (n=30) and experimental group (n=30). Rats in the experimental group were intramuscularly injected with dehydroepiandrosterone (DHEA) (6 mg/100 g of body weight) and 0.2 mL oil for injection, while those in normal group were intramuscularly injected with 0...
June 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29916284/assessment-of-ovarian-reserve-as-an-indicator-of-fertility-and-health-consequences-in-patients-with-chronic-kidney-disease-stages-3-4
#15
Iwona Szydłowska, Aleksandra Marciniak, Agnieszka Brodowska, Marcin Lisak, Sylwia Przysiecka, Jacek Różański
The aim of the study was to evaluate whether ovarian reserve depends on chronic kidney disease. Twenty-four patients, 23-45 years with chronic kidney disease (CKD) stages 3-4 were included in the study. All the patients underwent transvaginal ultrasounds to assess antral follicle count (AFC) and ovarian volume. The serum samples were obtained on days 3-5 of the menstrual cycle from all participants for anti-Mullerian hormone (AMH), follicle stimulating hormone (FSH), and estradiol (E2) levels. On the base of the study, it was concluded that the most sensitive parameters of ovarian reserve are AMH and AFC...
June 19, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29915899/stable-expression-of-infliximab-in-crispr-cas9-mediated-bak1-deficient-cho-cells
#16
Zhi Miao, Qian Li, Jian Zhao, Peng Wang, Lei Wang, Hong-Peng He, Nan Wang, Hao Zhou, Tong-Cun Zhang, Xue-Gang Luo
OBJECTIVES: To establish stable infliximab-expressing Chinese hamster ovary (CHO) cells with high tolerance to serum-free culture. RESULTS: Bcl-2 antagonist/killer 1 (BAK1), which is a key mediator of the apoptosis pathway, was disrupted, and infliximab, which is a broadly used monoclonal antibody for the treatment of rheumatoid arthritis and other autoimmune diseases, was incorporated into the BAK1 locus of the CHO chromosome using the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas genome-editing technique...
June 18, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29915802/laparoscopic-ovarian-transposition-prior-to-pelvic-radiation-for-gynecologic-cancer
#17
Brenna E Swift, Eric Leung, Danielle Vicus, Allan Covens
This study evaluates a novel technique of laparoscopic ovarian transposition performed by Gynecologic Oncologists prior to pelvic radiation for gynecologic cancer. A retrospective review was completed of all patients that underwent laparoscopic ovarian transposition from February 2007 to June 2017 at one tertiary care cancer. The technique involves salpingectomy, followed by retroperitoneal dissection to move the ovaries lateral to the hepatic and splenic flexures of the colon. Normal ovarian function was defined by the absence of vasomotor symptoms, FSH and menstrual history (if menstruating)...
May 2018: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/29915727/comparing-the-frequency-of-polycystic-ovary-syndrome-in-women-with-and-without-epilepsy
#18
Leila Amini, Marjan Hematian, Ali Montazeri, Korosh Gharegozli
Introduction: Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders; the impact of epilepsy and antiepileptic drugs influences the function of hypothalamic-pituitary-gonadal axis and dysfunction of the endocrine system and reproductive hormones in women with epilepsy. This study was carried out with an aim of determining and comparing the frequency and intensity of the complications of the hirsutism in women with and without epilepsy in Tehran in 2016-2017. Materials and Methods: This is a cross-sectional-comparative study which was carried out on 338 women of 18-35-year-old women with and without epilepsy who were selected by continuous sampling method...
January 2018: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29915694/histology-of-24-organs-from-asian-elephant-calves-elephas-maximus
#19
Chatchote Thitaram, Pitchaya Matchimakul, Wanpitak Pongkan, Wasan Tangphokhanon, Raktham Maktrirat, Jaruwan Khonmee, Anucha Sathanawongs, Piyamat Kongtueng, Korakot Nganvongpanit
Background: Elephants are the largest and heaviest living terrestrial animals, but information on their histology is still lacking. This study provides a unique insight into the elephant's organs and also provides a comparison between juvenile Asian elephants and adult Asian elephants or other species. Here we report on the histological structure of 24 organs, including the skin, brain (cerebrum, cerebellar hemisphere, vermis, thalamus, midbrain), spinal cord, sciatic nerve, striated skeletal muscle, cardiac muscle, bone (flat bone and long bone), cartilage (hyaline cartilage and fibrocartilage), heart (right atrium, right ventricle), blood vessels (aorta, pulmonary artery and caudal vena cava), trunk, trachea, lung, tongue, esophagus, stomach, small intestine (duodenum, jejunum, ileum), large intestine (cecum, colon, rectum), liver and pancreas, kidney, ovary, uterus (body and horn) and spleen of two juvenile Asian elephants...
2018: PeerJ
https://www.readbyqxmd.com/read/29915166/unusual-sites-of-high-grade-neuroendocrine-carcinomas-a-case-series-and-review-of-the-literature
#20
Geoffrey A Watson, Yasar Ahmed, Sarah Picardo, Sonya Chew, Shona Cobbe, Cillian Mahony, James Crotty, Fintan Wallis, Martin J Shelly, Patrick Kiely, Olu Bunmi Ipadeola, Vourneen Healy, Nemer Osman, Rajnish K Gupta
BACKGROUND Neuroendocrine tumors (NETs) encompass a diverse group of varying clinicopathological entities arising from cells of the endocrine and nervous systems. The presentation of these unique tumors can range from occult disease discovered incidentally to hyperactive, metastatic secretory tumors. NETs most commonly originate in the gastrointestinal and respiratory tract, although they may occur at any site in the body due to the wide distribution of neuroendocrine cells. Their classification system is complex and continues to evolve, and the current system uses histological grade in defining these subtypes...
June 19, 2018: American Journal of Case Reports
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