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https://www.readbyqxmd.com/read/29150912/sustaining-an-efficient-and-effective-cho-cell-line-development-platform-by-incorporation-of-24-deep-well-plate-screening-and-multivariate-analysis
#1
Alessandro Mora, Sheng Sam Zhang, Gerald Carson, Bernard Nabiswa, Patrick Hossler, Seongkyu Yoon
Efficient and effective cell line screening is paramount towards a successful biomanufacturing program. Here we describe the implementation of 24-deep well plate screening of CHO lines as part of the cell line development platform at AbbVie. Incorporation of this approach accelerated the identification of the best candidate lines for process development. In an effort to quantify and predict process performance comparability, we compared cell culture performance in 24-deep well plates (24-DWP) and in shake flasks, for a panel of Chinese Hamster Ovary cell lines expressing a monoclonal antibody...
November 18, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/29150728/the-plant-pathogen-gluconobacter-cerinus-strain-cdf1-is-beneficial-to-the-fruit-fly-bactrocera-dorsalis
#2
Muyang He, Jianjun Jiang, Daifeng Cheng
Plant pathogens can build relationships with insect hosts to complete their life cycles, and they often modify the behavior and development of hosts to improve their own fitness. In order to unravel whether some bacteria that can make fruit rot could have developed symbiotic interactions with Bactrocera dorsalis, we studied the symbiont bacteria profiles of the fly. We identified the bacterium Gluconobacter cerinus strain CDF1 from the ovaries and eggs of the oriental fruit fly B. dorsalis and the amount of Gluconobacter cerinus strain CDF1 increased significantly as the ovaries developed and in fruits on which non-sterile eggs were laid...
November 17, 2017: AMB Express
https://www.readbyqxmd.com/read/29150243/effects-of-n-carbamylglutamate-and-l-arginine-on-steroidogenesis-and-gene-expression-in-bovine-granulosa-cells
#3
T Feng, L F Schütz, B C Morrell, M C Perego, L J Spicer
Feeding N-carbamylglutamate (NCG) and arginine (ARG) improves reproductive measures in pigs and reduces systemic steroid levels in pregnant ewes. We hypothesized that the effects of NCG and ARG on reproduction were due to direct effects on the ovary. Thus, the objectives of this study were to investigate the effects of NCG and ARG on granulosa cell (GC) steroidogenesis, gene expression, and cell proliferation in vitro. GC were collected from small (1-5mm) bovine follicles and treated in vitro with NCG or ARG in serum-free medium for 24h to 48h...
November 10, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29148539/extrauterine-high-grade-serous-carcinomas-with-bilateral-adnexal-involvement-as-the-only-two-disease-sites-are-clonal-based-on-tp53-sequencing-results-implications-for-biology-classification-and-staging
#4
Naveena Singh, Asma Faruqi, Friedrich Kommoss, W Glenn McCluggage, Giorgia Trevisan, Janine Senz, Amy Lum, C Blake Gilks, Michael Anglesio
A previous multicenter study of 67 cases of Stage I/II tubo-ovarian high-grade serous carcinoma with complete tubal sampling identified 7 cases in which there were only two disease sites, comprising tumor involving opposite adnexa with no extra-adnexal involvement. This study aimed to determine whether such low-stage extrauterine high-grade serous carcinomas with only two sites of involvement, located on opposite adnexa, have identical or different TP53 mutations in order to investigate their clonal relationship...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29147493/the-effect-of-the-ovarian-varicose-vein-on-the-dna-methylation-in-the-rat-s-oocyte
#5
Amirhossein Mohammadi, Bagher Minaei Zangi, Mahshid Delfan Azari, Rafieh Alizadeh, Mohammad Salehi, Erfan Daneshi, Mohammad Jafar Rezaei, Mehdi Abbasi
Objectives: We intended to determine whether the ovarian varicose which is one of the common etiologies of the pelvic congestion syndrome, has the ability to interfere with the DNA methylation reprogramming in the oocyte and thereby affect the oocyte quality or not. Materials and Methods: Varicose model was induced according to the Turner's method in the rats. Briefly, a 20-gauge needle was placed on the left renal vein and a thread was tied over both the needle and the renal vein medial to the insertion of the ovarian vein, and then the needle was removed...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29147461/the-role-of-antioxidant-enzymes-in-the-ovaries
#6
REVIEW
Shan Wang, Guolin He, Meng Chen, Tao Zuo, Wenming Xu, Xinghui Liu
Proper physiological function of the ovaries is very important for the entire female reproductive system and overall health. Reactive oxygen species (ROS) are generated as by-products during ovarian physiological metabolism, and antioxidants are indicated as factors that can maintain the balance between ROS production and clearance. A disturbance in this balance can induce pathological consequences in oocyte maturation, ovulation, fertilization, implantation, and embryo development, which can ultimately influence pregnancy outcomes...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29146447/in-the-ovary-of-ciona-intestinalis-type-a-immune-related-galectin-and-phenoloxidase-genes-are-differentially-expressed-by-the-follicle-accessory-cells
#7
Daniela Parrinello, Maria Antonietta Sanfratello, Maria Giovanna Parisi, Aiti Vizzini, Matteo Cammarata
Riboprobes (in situ hybridization) and antibodies (immunohistochemistry), previously used to show the upregulation of Ciona intestinalis (Type A) galectins (CiLgals-a, CiLgals-b) and phenoloxidase (CinPO2) immune-related genes, were tested on histological sections of the ovary. The ovarian follicles are composed of oocytes encased by follicular cells (FCs) and test cells (TCs). Results show the transcription upregulation of both CiLgals and CinPO2 genes in the vitellogenic FCs, conversely distinct cytolocalization of the proteins are shown...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146210/novel-intracellular-transport-refractory-mutations-in-kcnh2-identified-in-patients-with-symptomatic-long-qt-syndrome
#8
Daisuke Fukumoto, Wei-Guang Ding, Yuko Wada, Yusuke Fujii, Mari Ichikawa, Koichiro Takayama, Megumi Fukuyama, Koichi Kato, Hideki Itoh, Takeru Makiyama, Mariko Omatsu-Kanbe, Hiroshi Matsuura, Minoru Horie, Seiko Ohno
BACKGROUND: Missense mutations in KCNH2, a gene encoding the Kv11.1 channel, cause long QT syndrome (LQTS) type 2 primarily by disrupting the intracellular transport of Kv11.1 to the plasma membrane. The present study aimed to clarify the functional changes by two novel KCNH2 missense mutations. METHODS: We performed genetic screening of three unrelated symptomatic LQTS probands with family histories of cardiac symptoms. Chinese hamster ovary cells were transfected with wild-type (WT) and/or mutant KCNH2 plasmid and examined by patch-clamp technique...
November 13, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29146058/methylation-associated-silencing-of-sfrp1-gene-in-high-grade-serous-ovarian-carcinomas
#9
Vedran Kardum, Valentina Karin, Mislav Glibo, Anita Skrtic, Tamara Nikuseva Martic, Nermina Ibisevic, Faruk Skenderi, Semir Vranic, Ljiljana Serman
Wnt is a highly conserved signaling pathway responsible for tissue regeneration, maintenance and differentiation of stem cells in adults. Its aberrant activation through reduced expression of Wnt signaling pathway inhibitors, such as proteins from the SFRP family, is commonly seen in many tumors. In the present study we explored SFRP1 protein expression using immunohistochemistry in 11 low-grade serous ovarian carcinomas (LGSC), 42 high-grade serous ovarian carcinomas (HGSC), and 5 normal ovarian tissues (controls)...
December 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29145694/engineered-and-natural-promoters-and-chromatin-modifying-elements-for-recombinant-protein-expression-in-cho-cells
#10
REVIEW
Nadiya Romanova, Thomas Noll
Promoters play a pivotal role in integrating and processing the signals related to transcription initiation. Strong natural viral promoters, such as hCMV or SV40E, have been routinely employed to achieve a high rate of gene expression in ubiquitously used Chinese hamster ovary (CHO) cells. However, viral promoters are susceptible to epigenetic silencing and lack precise regulation levers. This has paved the way to more sensible control elements: endogenous, inducible and synthetic promoters. In this review we summarise and discuss the use of natural viral, mammalian and endogenous promoters, as well as recent advances in synthetic promoters and inducible systems for protein expression in CHO cells...
November 16, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29145650/loss-of-p300-and-cbp-disrupts-histone-acetylation-at-the-mouse-sry-promoter-and-causes-xy-gonadal-sex-reversal
#11
Gwenn-Aël Carré, Pam Siggers, Marilena Xipolita, Paul Brindle, Beat Lutz, Sara Wells, Andy Greenfield
CREB-binding protein (CBP, CREBBP, KAT3A) and its closely related paralogue p300 (EP300, KAT3B), together termed p300/CBP, are histone/lysine acetyl-transferases that control gene expression by modifying chromatin-associated proteins. Here, we report roles for both of these chromatin-modifying enzymes in mouse sex determination, the process by which the embryonic gonad develops into a testis or an ovary. By targeting gene ablation to embryonic gonadal somatic cells using an inducible Cre line, we show that gonads lacking either gene exhibit major abnormalities of XY gonad development at 14...
November 14, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29145094/a-mixture-of-five-endocrine-disrupting-chemicals-modulates-concentrations-of-bisphenol-a-and-estradiol-in-mice
#12
Tyler Pollock, Rachel E Weaver, Ramtin Ghasemi, Denys deCatanzaro
Most people in developed countries are exposed to multiple endocrine-disrupting synthetic chemicals. We previously showed that a single dose of triclosan, tetrabromobisphenol A (TBBPA), butyl paraben, propyl paraben, or di(2-ethylhexyl) phthalate elevated concentrations of bisphenol A (BPA) in mice. Here we investigated whether concurrent exposure to lower doses of these five chemicals could modulate concentrations of bisphenol A (BPA) or the natural estrogen, 17β-estradiol (E2). CF1 mice were injected subcutaneously with 0...
November 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29144805/dpp4-inhibitor-sitagliptin-as-a-potential-treatment-option-in-metformin-intolerant-obese-women-with-polycystic-ovary-syndrome-a-pilot-randomized-study
#13
Simona Ferjan, Andrej Janez, Mojca Jensterle
OBJECTIVE: Metformin has an established role in the management of polycystic ovary syndrome (PCOS). Some patients cannot tolerate it due to associated gastrointestinal adverse events. The present study evaluated DPP4 inhibitor sitagliptin as a potential treatment option in metformin intolerant PCOS. DESIGN: We conducted a 12-week prospective randomized open-label study with 30 obese metformin intolerant women with PCOS (aged 35.0±7.2 years, BMI 36.9±5.5 kg/m(2))...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29144740/identification-synthesis-and-safety-assessment-of-thidiazuron-1-phenyl-3-1-2-3-thidiazol-5-yl-urea-and-its-metabolites-in-kiwifruits
#14
Zhiwei Zhang, Haihua Yang, Zhenhong Gao, Yahong Yuan, Jing Dong, Yuan Wang, Tianli Yue
Quality of kiwifruit became worse due to the abuse of plant growth regulators (PGRs). The safety of the fruits treated with PGRs are also worried by consumers. Therefore, the present study analysed the structure of thidiazuron (TDZ, (1-phenyl-3-(1,2,3-thidiazol-5-yl)urea)) (1) and its metabolites of bio-transformation in kiwifruits by using liquid chromatography hybrid ion trap time-of-flight mass spectrometry (LC-IT-TOF-MS). Standard compounds were also synthesized and used for structural identification of those metabolites...
November 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29144548/anti-m%C3%A3-llerian-hormone-measurement-for-the-diagnosis-of-polycystic-ovary-syndrome
#15
Thozhukat Sathyapalan, Ahmed Al-Qaissi, Eric S Kilpatrick, Soha R Dargham, Stephen L Atkin
OBJECTIVE: Anti-Müllerian hormone (AMH) is derived from the small antral follicles and an elevated level has been suggested to add value to the Rotterdam criteria for the diagnosis of PCOS in cases of diagnostic uncertainty. Therefore, the role of AMH in the classical phenotype of PCOS was defined within a Caucasian population. DESIGN: This was a cross sectional study. PATIENTS: 65 women without PCOS and 110 women with PCOS fulfilling all 3 diagnostic Rotterdam criteria...
November 16, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29144016/what-is-the-protective-effect-of-metformin-on-rat-ovary-against-ischemia-reperfusion-injury
#16
Cemile Dayangan Sayan, Gokhan Karaca, Zehra Sema Ozkan, Ozlem B Tulmac, Aslı Ceylan Isik, Tuba Devrim, Gülcin Aydin, Ilkin Yeral
AIM: The aim of this study was to investigate the protective effect of metformin on the rat ovary against ischemia-reperfusion injury. METHODS: Thirty-seven female Wistar albino rats were used in the study. The rats were divided into five groups, as follows: sham operation group (group 1); torsion group (group 2); torsion/detorsion + saline group (group 3); torsion/detorsion + low-dose metformin group (group 4); and torsion/detorsion + high-dose metformin group (group 5)...
November 16, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29143991/genetic-and-non-genetic-risk-factors-for-pre-eclampsia-an-umbrella-review-of-systematic-reviews-and-meta-analyses-of-observational-studies
#17
REVIEW
Konstantinos Giannakou, Evangelos Evangelou, Stefania I Papatheodorou
OBJECTIVE: To summarize evidence from the literature on the risk factors associated with preeclampsia, assess the presence of statistical biases and identify associations with robust evidence. METHODS: We searched PubMed and ISI Web of Science from inception to October, 2016, to identify systematic reviews and meta-analyses of observational studies examining associations between genetic and non-genetic risk factors for preeclampsia. For each meta-analysis we estimated the summary effect size by random-effects and fixed-effects models, the 95% confidence interval and the 95% prediction interval...
November 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29143160/solvent-free-synthesis-and-anticancer-activity-evaluation-of-benzimidazole-and-perimidine-derivatives
#18
Anuj Kumar, Somesh Banerjee, Partha Roy, S M Sondhi, Anuj Sharma
Benzimidazoles and perimidines are subsidiary structures for research and development of new biologically active molecules and have established prominence because of their promising biological activities. Two series of diversified heterocyclic molecules, tetracyclic benzimidazole derivatives, tetracyclic and pentacyclic perimidine derivatives have been synthesized in good yields by condensation of acid anhydrides and diacids with various diamines using microwave irradiation. All synthesized derivatives were fully characterized and evaluated for in vitro antiproliferative activity against five human cancer cell lines...
November 15, 2017: Molecular Diversity
https://www.readbyqxmd.com/read/29143144/carcinosarcoma-of-the-ovary-compared-to-ovarian-high-grade-serous-carcinoma-impact-of-optimal-cytoreduction-and-standard-adjuvant-treatment
#19
Ibrahim Yalcin, Mehmet Mutlu Meydanli, Ahmet Taner Turan, Salih Taskin, Mustafa Erkan Sari, Tayfun Gungor, Ozgur Akbayir, Ali Ayhan
OBJECTIVE: The purpose of this retrospective study was to compare the prognoses of women with ovarian carcinosarcoma (OCS) who had optimal cytoreductive surgery followed by platinum plus taxane combination chemotherapy to those of women with ovarian high-grade serous carcinoma (HGSC) treated in the same manner. METHODS: A multicenter, retrospective department database review was performed to identify patients with OCS at eight gynecologic oncology centers in Turkey...
November 16, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29143077/calcein-release-from-cells-in-vitro-via-reversible-and-irreversible-electroporation
#20
Violeta Rajeckaitė, Baltramiejus Jakštys, Arnas Rafanavičius, Martynas Maciulevičius, Milda Jakutavičiūtė, Saulius Šatkauskas
The aim of this study was to investigate the dependence of calcein extraction and cell viability on the parameters of pulsed electric field (PEF). Two different approaches concerning PEF parameters were investigated: (1) extraction efficiency and cell viability dependence on pulse number, exploiting 1200 V/cm 100 µs duration high voltage (HV) electric pulses and (2) extraction efficiency and cell viability dependence on the pulses with different duration (44-400 µs) and electric field strength (600-1800 V/cm) that result in the same amount of electric field energy delivered to Chinese hamster ovary cells...
November 15, 2017: Journal of Membrane Biology
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