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https://www.readbyqxmd.com/read/29792943/the-development-of-a-screening-protocol-for-salmonella-spp-and-enteropathogenic-yersinia-spp-in-samples-from-wild-boar-sus-scrofa-also-generating-mlva-data-for-y-enterocolitica-and-y-pseudotuberculosis
#1
Axel Sannö, Magdalena Jacobson, Sandra Sterner, Susanne Thisted-Lambertz, Anna Aspán
Salmonellosis and yersiniosis are notifiable human diseases that are commonly associated with contaminated food. Domestic pigs as well as wild boars and other wild-life have been identified as reservoirs of these bacteria. Methods for cultivation and molecular epidemiological investigations of Salmonella spp. are well established, however, cultivation of enteropathogenic Yersinia spp. is time- consuming and the commonly used method for molecular epidemiological investigations, pulsed-field gel electrophoresis, lack in discriminatory power...
May 21, 2018: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/29792930/functional-genomics-for-the-oleaginous-yeast-yarrowia-lipolytica
#2
Kurt Patterson, James Yu, Jenny Landberg, Ivan Chang, Farbod Shavarebi, Virginia Bilanchone, Suzanne Sandmeyer
Oleaginous yeasts are valuable systems for biosustainable production of hydrocarbon-based chemicals. Yarrowia lipolytica is one of the best characterized of these yeast with respect to genome annotation and flux analysis of metabolic processes. Nonetheless, progress is hampered by a dearth of genome-wide tools enabling functional genomics. In order to remedy this deficiency, we developed a library of Y. lipolytica insertion mutants via transposon mutagenesis. The Hermes DNA transposon was expressed to achieve saturation mutagenesis of the genome...
May 21, 2018: Metabolic Engineering
https://www.readbyqxmd.com/read/29791854/nup133-is-required-for-proper-nuclear-pore-basket-assembly-and-dynamics-in-embryonic-stem-cells
#3
Benoit Souquet, Ellen Freed, Alessandro Berto, Vedrana Andric, Nicolas Audugé, Bernardo Reina-San-Martin, Elizabeth Lacy, Valérie Doye
Nup133 belongs to the Y-complex, a key component of the nuclear pore complex (NPC) scaffold. Studies on a null mutation in mice previously revealed that Nup133 is essential for embryonic development but not for mouse embryonic stem cell (mESC) proliferation. Using single-pore detection and average NE-fluorescence intensity, we find that Nup133 is dispensable for interphase and postmitotic NPC scaffold assembly in pluripotent mESCs. However, loss of Nup133 specifically perturbs the formation of the nuclear basket as manifested by the absence of Tpr in about half of the NPCs combined with altered dynamics of Nup153...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29791348/detection-of-iron-atoms-by-emission-spectroscopy-and-laser-induced-fluorescence-in-solid-propellant-flames
#4
G Vilmart, N Dorval, M Orain, D Lambert, R Devillers, Y Fabignon, B Attal-Tretout, A Bresson
Planar laser-induced fluorescence on atomic iron is investigated in this paper, and a measurement strategy is proposed to monitor the fluorescence of iron atoms with good sensitivity. A model is proposed to fit the experimental fluorescence spectra, and good agreement is found between simulated and experimental spectra. Emission and laser-induced fluorescence measurements are performed in the flames of ammonium perchlorate composite propellants containing iron-based catalysts. A fluorescence signal from iron atoms after excitation at 248 nm is observed for the first time in propellant flames...
May 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29790020/can-we-accurately-predict-cost-effectiveness-without-access-to-overall-survival-data-the-case-study-of-nivolumab-in-combination-with-ipilimumab-for-the-treatment-of-patients-with-advanced-melanoma-in-england
#5
D Lee, A Amadi, J Sabater, J Ellis, H Johnson, S Kotapati, S McNamara, A Walker, M Cooper, K Patterson, N Roskell, Y Meng
BACKGROUND: Nivolumab with ipilimumab (the Regimen) is the first immuno-oncology combination treatment to demonstrate long-term clinical benefit for advanced melanoma patients. We evaluated the cost effectiveness of the Regimen in this population, with and without the availability of overall survival (OS) data. METHODS: A partitioned survival model and a Markov state-transition model were developed to estimate the lifetime costs and benefits of the Regimen versus ipilimumab...
May 22, 2018: PharmacoEconomics Open
https://www.readbyqxmd.com/read/29789540/rapid-host-strain-improvement-by-in-vivo-rearrangement-of-a-synthetic-yeast-chromosome
#6
B A Blount, G-O F Gowers, J C H Ho, R Ledesma-Amaro, D Jovicevic, R M McKiernan, Z X Xie, B Z Li, Y J Yuan, T Ellis
Synthetic biology tools, such as modular parts and combinatorial DNA assembly, are routinely used to optimise the productivity of heterologous metabolic pathways for biosynthesis or substrate utilisation, yet it is well established that host strain background is just as important for determining productivity. Here we report that in vivo combinatorial genomic rearrangement of Saccharomyces cerevisiae yeast with a synthetic chromosome V can rapidly generate new, improved host strains with genetic backgrounds favourable to diverse heterologous pathways, including those for violacein and penicillin biosynthesis and for xylose utilisation...
May 22, 2018: Nature Communications
https://www.readbyqxmd.com/read/29785640/switching-from-high-fat-diet-to-foods-containing-resveratrol-as-a-calorie-restriction-mimetic-changes-the-architecture-of-arcuate-nucleus-to-produce-more-newborn-anorexigenic-neurons
#7
Maryam Safahani, Hadi Aligholi, Farshid Noorbakhsh, Mahmoud Djalali, Hamideh Pishva, Sayed Mostafa Modarres Mousavi, Leila Alizadeh, Ali Gorji, Fariba Koohdani
PURPOSE: These days, obesity threatens the health for which one of the main interventions is calorie restriction (CR). Due to the difficulty of compliance with this treatment, CR mimetics such as resveratrol (RSV) have been considered. The present study compared the effects of RSV and CR on hypothalamic remodeling in a diet-switching experiment. METHODS: C57BL/6 male mice received high-fat diet (HFD) for 4 weeks, subsequently their diet switched to chow diet, HFD + RSV, chow diet + RSV or CR diet for a further 6 weeks...
May 21, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29785135/mutation-analysis-of-brca1-2-mutations-with-special-reference-to-polymorphic-snps-in-indian-breast-cancer-patients
#8
Nidhi D Shah, Parth S Shah, Yash Y Panchal, Kalpesh H Katudia, Nikunj B Khatri, Hari Shankar P Ray, Upti R Bhatiya, Sandip C Shah, Bhavini S Shah, Mandava V Rao
Background: Germline mutations BRCA1 and BRCA2 contribute almost equally in the causation of breast cancer (BC). The type of mutations in the Indian population that cause this condition is largely unknown. Purpose: In this cohort, 79 randomized BC patients were screened for various types of BRCA1 and BRCA2 mutations including frameshift, nonsense, missense, in-frame and splice site types. Materials and methods: The purified extracted DNA of each referral patient was subjected to Sanger gene sequencing using Codon Code Analyzer and Mutation Surveyor and next-generation sequencing (NGS) methods with Ion torrent software, after appropriate care...
2018: Application of Clinical Genetics
https://www.readbyqxmd.com/read/29783834/-application-of-next-generation-sequencing-in-clinical-microbial-research
#9
L Y Guo, Q J Li, G Liu
No abstract text is available yet for this article.
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29783823/-phenotypic-and-genotypic-spectra-of-patients-with-glucose-6-phosphate-dehydrogenase-deficiency-gene-known-pathogenic-variants-a-single-center-study
#10
X Chen, L Yang, H J Wang, B B Wu, Y L Lu, X R Dong, W H Zhou
Objective: To analyze the hotspots of known pathogenic disease-causing variants of glucose-6-phosphate dehydrogenase (G6PD) and the phenotype spectrum of neonatal patients with known pathogenic disease-causing variants of G6PD. Methods: The known pathogenic disease-causing variants of G6PD were collected from Human Gene Mutation Database. Screening was performed for these variants among the 7 966 cases (2 357 neonatal, 5 609 non-neonatal) in the database of sequencing at Molecular Diagnosis Center, Children's Hospital of Fudan University...
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29783668/a-comprehensive-characterization-of-a-10-at-yb-ysag-laser-ceramic-sample
#11
Angela Pirri, Guido Toci, Jiang Li, Yagang Feng, Tengfei Xie, Zhaoxiang Yang, Barbara Patrizi, Matteo Vannini
We report a comprehensive characterization of a 10 at.% Yb3+ -doped YSAG (Yb:Y₃Scx Al(5-x) O12 , x = 1.5) ceramic, including microstructural, spectroscopic and laser properties. Moreover, we illustrate and discuss the fabrication technique. Yb3+ in YSAG features a broader absorption and emission band than in traditional YAG, which is advantageous for laser applications (i.e., tunable laser sources, ultrafast pulse generation). Pumping in a quasi continuous wave regime at 936 nm, the ceramic has shown good laser performance as the maximum output power was 6...
May 18, 2018: Materials
https://www.readbyqxmd.com/read/29783654/recent-progress-in-upconversion-photodynamic-therapy
#12
REVIEW
Hailong Qiu, Meiling Tan, Tymish Y Ohulchanskyy, Jonathan F Lovell, Guanying Chen
Photodynamic therapy (PDT) is a minimally invasive cancer modality that combines a photosensitizer (PS), light, and oxygen. Introduction of new nanotechnologies holds potential to improve PDT performance. Upconversion nanoparticles (UCNPs) offer potentially advantageous benefits for PDT, attributed to their distinct photon upconverting feature. The ability to convert near-infrared (NIR) light into visible or even ultraviolet light via UCNPs allows for the activation of nearby PS agents to produce singlet oxygen, as most PS agents absorb visible and ultraviolet light...
May 18, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29782498/endoplasmic-reticulum-plasma-membrane-contact-sites-integrate-sterol-and-phospholipid-regulation
#13
Evan Quon, Yves Y Sere, Neha Chauhan, Jesper Johansen, David P Sullivan, Jeremy S Dittman, William J Rice, Robin B Chan, Gilbert di Paolo, Christopher T Beh, Anant K Menon
Tether proteins attach the endoplasmic reticulum (ER) to other cellular membranes, thereby creating contact sites that are proposed to form platforms for regulating lipid homeostasis and facilitating non-vesicular lipid exchange. Sterols are synthesized in the ER and transported by non-vesicular mechanisms to the plasma membrane (PM), where they represent almost half of all PM lipids and contribute critically to the barrier function of the PM. To determine whether contact sites are important for both sterol exchange between the ER and PM and intermembrane regulation of lipid metabolism, we generated Δ-super-tether (Δ-s-tether) yeast cells that lack six previously identified tethering proteins (yeast extended synatotagmin [E-Syt], vesicle-associated membrane protein [VAMP]-associated protein [VAP], and TMEM16-anoctamin homologues) as well as the presumptive tether Ice2...
May 21, 2018: PLoS Biology
https://www.readbyqxmd.com/read/29782490/an-optimized-digital-watermarking-algorithm-in-wavelet-domain-based-on-differential-evolution-for-color-image
#14
Xinchun Cui, Yuying Niu, Xiangwei Zheng, Yingshuai Han
In this paper, a new color watermarking algorithm based on differential evolution is proposed. A color host image is first converted from RGB space to YIQ space, which is more suitable for the human visual system. Then, apply three-level discrete wavelet transformation to luminance component Y and generate four different frequency sub-bands. After that, perform singular value decomposition on these sub-bands. In the watermark embedding process, apply discrete wavelet transformation to a watermark image after the scrambling encryption processing...
2018: PloS One
https://www.readbyqxmd.com/read/29782207/the-benzodiazepine-anesthetic-midazolam-prevents-hyperglycemia-induced-microvascular-leakage-in-the-retinas-of-diabetic-mice
#15
Yeon-Ju Lee, Minsoo Kim, Jee-Yeon Lee, Se-Hui Jung, Hye-Yoon Jeon, Seung Ah Lee, Seongsik Kang, Eun-Taek Han, Won Sun Park, Seok-Ho Hong, Young-Myeong Kim, Kwon-Soo Ha
We investigated the beneficial effects of midazolam against vascular endothelial growth factor (VEGF)-induced vascular leakage and its molecular mechanism of action in human retinal endothelial cells (HRECs) and the retinas of diabetic mice. Midazolam inhibited VEGF-induced elevation of intracellular Ca2+ , generation of reactive oxygen species (ROS), and transglutaminase activation in HRECs; these effects were reversed by the GABA, type A (GABAA ) receptor antagonist flumazenil but not by the translocator protein antagonist PK11195...
May 21, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29780499/rational-design-of-a-water-soluble-nir-aiegen-and-its-application-in-ultrafast-wash-free-cellular-imaging-and-photodynamic-cancer-cell-ablation
#16
Dong Wang, Huifang Su, Ryan T K Kwok, Xianglong Hu, Hang Zou, Qianxin Luo, Michelle M S Lee, Wenhan Xu, Jacky W Y Lam, Ben Zhong Tang
The synthesis of water-soluble near-infrared (NIR)-emissive fluorescent molecules with aggregation-induced emission (AIE) characteristics and theranostic functions is highly desirable but remains challenging. In this work, we designed and readily prepared for the first time such a molecule with AIE features, good water-solubility and intense emission in the NIR region. This AIE luminogen (AIEgen) is able to specifically "light up" the cell membrane without the involvement of a washing procedure. Interestingly, the staining process can be performed by simply shaking the culture with cells at room temperature for only a few seconds after the addition of the AIEgen, indicating an ultrafast and easy-to-operate staining protocol...
April 21, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780470/stable-2d-anti-ferromagnetically-coupled-fluorenyl-radical-dendrons
#17
Jian Wang, Gakhyun Kim, María Eugenia Sandoval-Salinas, Hoa Phan, Tullimilli Y Gopalakrishna, Xuefeng Lu, David Casanova, Dongho Kim, Jishan Wu
We report the first class of stable, two-dimensional (2D) anti-ferromagnetically coupled dendritic polyradicaloids. A kinetically blocked fluorenyl radical was used to build up the first and second generation dendrons FR-G1 and FR-G2 containing three and seven fluorenyl units, respectively. The neighboring fluorenyl radicals in FR-G1 and FR-G2 show moderate anti-ferromagnetic exchange interaction, resulting in a doublet and quartet ground state, respectively, with a small doublet-quartet energy gap. From FR-G1 to FR-G2 , the energy gap decreased and the two-photon absorption was enhanced owing to more extended 2D π-conjugation...
April 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29779353/-using-target-next-generation-sequencing-assay-in-diagnosing-of-46-patients-with-suspected-congenital-anemias
#18
Y Li, G X Peng, Q Y Gao, Y Li, L Ye, J P Li, L Song, H H Fan, Y Yang, Y Z Xiong, Z J Wu, W R Yang, K Zhou, X Zhao, L P Jing, F K Zhang, L Zhang
Objective: To evaluate the impact of the targeted next-generation sequencing (NGS) assay for difficult congenital anemias. Methods: Blood Disease Hospital Anemia Panel 2014 (BDHAP-2014) including 217 known genes of congenital anemias was developed. NGS and parental verification were performed for patients who were suspected diagnosed with congenital anaemia from August 2014 to July 2017. Results: A total of 46 patients were enrolled in this study, the clinical suspection were 11 cases Fanconi anemia (FA), 8 cases congenital dyserythropoietic anemia (CDA), 6 cases congenital sideroblast anemia (CSA), 12 cases congenital hemolytic anemia (CHA), 1 case dyskeratosis congenital (DC), 4 cases iron-refractory iron deficiency anemia and 4 cases unexplained cytopenia (Uc), respectively...
May 14, 2018: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29779145/comprehensive-genetic-testing-for-female-and-male-infertility-using-next-generation-sequencing
#19
Bonny Patel, Sasha Parets, Matthew Akana, Gregory Kellogg, Michael Jansen, Chihyu Chang, Ying Cai, Rebecca Fox, Mohammad Niknazar, Roman Shraga, Colby Hunter, Andrew Pollock, Robert Wisotzkey, Malgorzata Jaremko, Alex Bisignano, Oscar Puig
PURPOSE: To develop a comprehensive genetic test for female and male infertility in support of medical decisions during assisted reproductive technology (ART) protocols. METHODS: We developed a next-generation sequencing (NGS) gene panel consisting of 87 genes including promoters, 5' and 3' untranslated regions, exons, and selected introns. In addition, sex chromosome aneuploidies and Y chromosome microdeletions were analyzed concomitantly using the same panel. RESULTS: The NGS panel was analytically validated by retrospective analysis of 118 genomic DNA samples with known variants in loci representative of female and male infertility...
May 19, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29777591/bioengineering-triacetic-acid-lactone-production-in-yarrowia-lipolytica-for-pogostone-synthesis
#20
James Yu, Jenny Landberg, Farbod Shavarebi, Virginia Bilanchone, Adam Okerlund, Umayangani Wanninayake, Le Zhao, George Kraus, Suzanne Sandmeyer
Yarrowia lipolytica is an oleaginous yeast that is recognized for its ability to accumulate high levels of lipids, which can serve as precursors to biobased fuels and chemicals. Polyketides such as triacetic acid lactone (TAL) can also serve as a precursor for diverse commodity chemicals. This study used Y. lipolytica as a host organism for the production of TAL via expression of the 2-pyrone synthase gene from Gerbera hybrida. Induction of lipid biosynthesis by nitrogen-limited growth conditions increased TAL titers...
May 19, 2018: Biotechnology and Bioengineering
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