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https://www.readbyqxmd.com/read/29668111/efficient-in-planta-gene-targeting-in-tomato-using-geminiviral-replicons-and-the-crispr-cas9-system
#1
Tal Dahan-Meir, Shdema Filler-Hayut, Cathy Melamed-Bessudo, Samuel Bocobza, Henryk Czosnek, Asaph Aharoni, Avraham A Levy
Current breeding relies mostly on random mutagenesis and recombination to generate novel genetic variation. However, targeted genome editing is becoming an increasingly important tool for precise plant breeding. Using the CRISPR-Cas system combined with the bean yellow dwarf virus rolling circle replicon we optimized a method for targeted mutagenesis and gene replacement in tomato. The carotenoid isomerase (CRTISO) and phytoene synthase 1 (PSY1) genes from the carotenoid biosynthesis pathway were chosen as targets due to their easily detectable change of phenotype...
April 18, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29668038/photodynamic-therapy-induces-antifibrotic-alterations-in-primary-human-vocal-fold-fibroblasts
#2
Chi Zhang, Jiajia Wang, Adriana Chou, Ting Gong, Erin E Devine, Jack J Jiang
OBJECTIVES/HYPOTHESIS: Photodynamic therapy (PDT) is a promising treatment modality for laryngeal dysplasia, early-stage carcinoma, and papilloma, and was reported to have the ability to preserve laryngeal function and voice quality without clinical fibrotic response. We aimed to investigate the mechanism behind the antifibrotic effects of PDT on primary human vocal fold fibroblasts (VFFs) in vitro. STUDY DESIGN: In vitro analysis from one human donor. METHODS: Cell viability of VFFs in response to varying doses of PDT was investigated by the Cell Counting Kit-8 method...
April 18, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29667998/isolation-purification-characterization-and-bioactivities-of-a-glucan-from-the-root-of-pueraria-lobata
#3
Can Xu, Ningbo Qin, Chunyan Yan, Shumei Wang
The root of Pueraria lobata is considered to be a medicinal and edible herb for the treatment of diabetes, and it has a long history of application in China. To explore the constituents responsible for the anti-hyperglycemic activities of P. lobata, a water-soluble polysaccharide (PL70-1-1) was isolated and purified by using a DEAE-Cellulose 52 anion exchange column and a Sephacryl S-100 gel filtration column. Its molecular weight (2584 Da) was determined by high performance gel permeation chromatography (HPGPC)...
April 18, 2018: Food & Function
https://www.readbyqxmd.com/read/29667914/inactivation-of-map3k7-in-foxd1-expressing-cells-results-in-loss-of-mesangial-pdgfr%C3%AE-and-juvenile-kidney-scarring
#4
Michele J Karolak, Justin A Guay, Leif Oxburgh
Transforming growth factor beta (TGFβ) plays a central role in renal scarring, controlling extracellular matrix deposition by interstitial cells and mesangial cells. TGFβ signals through Smad and mitogen activated protein kinase (MAPK) pathways. To understand the role of MAPK in interstitial and mesangial cells, we genetically inactivated TGFβ-activated kinase 1 (Map3k7) using Foxd1+/cre. Embryonic kidney development was unperturbed in mutants, but spontaneous scarring of the kidney ensued during the first postnatal week, with retention of embryonic nephrogenic rests and accumulation of collagen IV in the mesangium...
April 18, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29667904/establishing-cut-offs-for-urine-erythrocyte-and-leukocyte-dipstick-tests
#5
Yousun Chung, Dae-Hyun Ko, Jungwon Hyun, Hyun Soo Kim, Min-Jeong Park, Dong Hoon Shin
Urine erythrocyte (Ery) and leukocyte (Leu) dipstick tests are essential for detecting microhematuria and urinary tract infection. Currently, there is no suggestion for establishing the cut-off limits in an ordinal scale test. This study aimed to establish the cut-off limits for urine Ery and Leu dipstick tests via probit regression. From 1 January 2016 to 30 June 2016, laboratory data were collected from patients at one teaching hospital whose specimen had analytical results from both a urine dipstick test and an automated urine particle analyzer...
April 18, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29667835/oxygen-release-induced-chemomechanical-breakdown-of-layered-cathode-materials
#6
Linqin Mu, Ruoqian Lin, Rong Xu, Lili Han, Sihao Xia, Dimosthenis Sokaras, James Steiner, Tsu-Chien Weng, Dennis Nordlund, Marca M Doeff, Yijin Liu, Kejie Zhao, Huolin L Xin, Feng Lin
Chemical and mechanical properties interplay on the nanometric scale and collectively govern the functionalities of battery materials. Understanding the relationship between the two can inform the design of battery materials with optimal chemomechanical properties for long-life lithium batteries. Herein, we report a mechanism of nanoscale mechanical breakdown in layered oxide cathode materials, originating from oxygen release at high states of charge under thermal abuse conditions. We observe that the mechanical breakdown of charged Li1-xNi0...
April 18, 2018: Nano Letters
https://www.readbyqxmd.com/read/29667834/phase-transformation-of-geo2-glass-to-nanocrystals-under-ambient-condition
#7
Zhuohao Xiao, Xin-Yuan Sun, Xiuying Li, Yongqing Wang, Zhiqiang Wang, Bowei Zhang, Xianglin Li, Ze Xiang Shen, Lingbing Kong, Yizhong Huang
Theoretically, the accomplishment of phase transformation requires sufficient energy to overcome the barriers of structure rearrangements. Transition of an amorphous to crystalline structure is implemented traditionally by heating at high temperatures. However, phase transformation under ambient condition without involving external energy has not been reported. Here, we demonstrate that phase transformation of GeO2 glass to nanocrystals can be triggered at ambient condition when subjected to aqueous environments...
April 18, 2018: Nano Letters
https://www.readbyqxmd.com/read/29667826/ruthenium-catalyzed-ring-opening-addition-of-anilides-to-7-azabenzonorbornadienes-a-diastereoselective-route-to-hydronaphthylamines
#8
Qiangqiang Yan, Chunhua Xiong, Steven Chu, Zhanxiang Liu, Yuhong Zhang
Ruthenium(II)-catalyzed direct ring-opening reaction of 7-azabenzonorbornadienes with anilides via C-H activation to access hydronaphthylamines has been developed. The transformation proceeds with high stereoselectivity to give cis-configuration products under redox-neutral conditions.
April 18, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29667782/hypofolins-a-l-ent-labdane-diterpenoids-from-the-roots-of-hypoestes-phyllostachya-pink-splash
#9
Bin Cheng, Lin-Fen Ding, Tong Yan, Zhang-Qiao Xie, Zhi-Jun Zhang, Liu-Dong Song, Xing-De Wu, Qin-Shi Zhao
Twelve new ent-labdane diterpenoids, hypofolins A-F (1-6) and hypofolins G-L (7a/7b, 8a/8b, and 9a/9b), were isolated from the roots of Hypoestes phyllostachya "Pink Splash". Their structures were elucidated by extensive 1D and 2D NMR spectroscopic and HRMS data. The absolute configurations of 1, 2, 5, and 7a/7b were determined by single crystal X-ray diffraction and ECD analysis, as well as chemical transformations. Compounds 7a/7b, 8a/8b, and 9a/9b were isolated as three pairs of interconverting mixture of two isomers between ketone and hemiketal types...
April 18, 2018: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/29667748/accumulation-and-sublethal-effects-of-triclosan-and-its-transformation-product-methyl-triclosan-in-the-earthworm-eisenia-andrei-exposed-to-environmental-concentrations-in-an-artificial-soil
#10
Fanny Chevillot, Mélanie Guyot, Mélanie Desrosiers, Nicole Cadoret, Éloïse Veilleux, Hubert Cabana, Jean-Philippe Bellenger
Municipal biosolids are increasingly used as a low-cost fertilizer in agricultural soil. Biosolids are contaminated by low concentrations (ng g-1 dw range) of a large variety of organic contaminants, such as triclosan (TCS). The effect of exposure to low concentrations of organic contaminants on soil biota remains largely undocumented. We evaluated the sublethal effects of TCS on the earthworm Eisenia andrei using an artificial soil amended with a nominal concentration of TCS of 50 ng g-1 dry weight soil...
April 18, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29667709/the-outlet-patch-gastric-heterotopia-of-the-colo-rectum-and-anus
#11
Abul Ala Syed Rifat Mannan, Michael Vieth, Armen Khararjian, Binny Khandakar, Dora Lam-Himlin, David Heydt, Feriyl Bhaijee, Henry J Venbrux, Kathleen Byrnes, Lysandra Voltaggio, Norman Barker, Songyang Yuan, Elizabeth Montgomery
AIMS: Gastric heterotopia (GH) has been described throughout the gastrointestinal tract. However, the colorectal region is an extremely rare location for it. We describe the clinicopathologic features of GH of the colon, rectum, and anus. METHODS AND RESULTS: We identified 33 cases in 20 males and 13 females (median age 54 years; range, 4 months to 73 years). Sites included the rectum (N=26), anus (N=4), ileocecal junction (N=1), ascending colon (N=1) and descending colon (N=1)...
April 18, 2018: Histopathology
https://www.readbyqxmd.com/read/29667669/structural-characterization-and-antitumor-activity-of-a-novel-se-polysaccharide-from-selenium-enriched-cordyceps-gunnii
#12
Huiqing Sun, Zhenyuan Zhu, Yali Tang, Yuanyuan Ren, Qiaoying Song, Yun Tang, Yongmin Zhang
Selenium (Se) has been recognized as an essential element. Animals and humans absorb and retain more organic Se than inorganic Se. Bio-transformation is a major approach to transform inorganic Se to organic Se. Cordyceps gunnii (C. gunnii), well known as a Chinese edible and medicinal fungus, has a variety of biological functions. C. gunnii and selenium were combined through liquid-fermentation to obtain selenium-enriched C. gunnii. A novel Se-polysaccharide (SeCPS-II) was extracted from selenium-enriched C...
April 18, 2018: Food & Function
https://www.readbyqxmd.com/read/29667666/a-luminescent-benzothiadiazole-bridging-bis-salicylaldiminato-zinc-ii-complex-with-mechanochromic-and-organogelation-properties
#13
Xiaoxian Song, Hanbo Yu, Xianju Yan, Yuewei Zhang, Yang Miao, Kaiqi Ye, Yue Wang
Herein, a new bis(salicylaldiminato)Zn(ii) Schiff base complex, BTZn, derived from benzo[c][1,2,5]thiadiazole-5,6-diamine was designed and synthesized. It exhibited unique mechanical force-induced luminescence change characteristic. Upon mechanical grinding, the as-prepared BTZn solid crystalized from an ethanol/dichloromethane solution displays a high-contrast emission-colour variation from yellow (emission maximum λem = 545 nm) to red (λem = 645 nm), and this emission variation can be erased through solvent vapour treatment...
April 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29667657/unrivalled-diversity-the-many-roles-and-reactions-of-bacterial-cytochromes-p450-in-secondary-metabolism
#14
REVIEW
Anja Greule, Jeanette E Stok, James J De Voss, Max J Cryle
Covering: 2000 up to 2018The cytochromes P450 (P450s) are a superfamily of heme-containing monooxygenases that perform diverse catalytic roles in many species, including bacteria. The P450 superfamily is widely known for the hydroxylation of unactivated C-H bonds, but the diversity of reactions that P450s can perform vastly exceeds this undoubtedly impressive chemical transformation. Within bacteria, P450s play important roles in many biosynthetic and biodegradative processes that span a wide range of secondary metabolite pathways and present diverse chemical transformations...
April 18, 2018: Natural Product Reports
https://www.readbyqxmd.com/read/29667626/eus-fna-in-cystic-pancreatic-lesions-where-are-we-now-and-where-are-we-headed-in-the-future
#15
REVIEW
Jose Lariño-Noia, Julio Iglesias-Garcia, Daniel de la Iglesia-Garcia, J Enrique Dominguez-Muñoz
EUS-FNA is often performed in the evaluation of Cystic Pancreatic Lesions (CPL) for a better preoperative characterization. The objective is to identify premalignant lesions as Mucinous Cystic Neoplasms, and/or a malignant transformation of them (adenocarcinoma). The role of cytological evaluation in this setting is discouraging and intracystic markers analysis, mainly CEA, lacks of a good specificity for the detection of mucinous neoplasms. New devices and approaches have emerged to overcome these problems as the cytology brush (Echobrush), the small mini-biopsy foceps, the cystoscopy and the needle Confocal LASER Endomicroscopy (nCLE), showing in some studies good rates of accuracy for distinguishing among mucinosus and non-mucinous neoplasms...
March 2018: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/29667552/harvesting-isolation-and-differentiation-of-rat-adipose-derived-stem-cells
#16
Panayiotis D Megaloikonomos, Georgios N Panagopoulos, Myrto Bami, Vasileios G Igoumenou, Leonidas Dimopoulos, Adamantia Milonaki, Maria Kyriakidou, Evanthia Mitsiokapa, Jane Anastassopoulou, Andreas F Mavrogenis
BACKGROUND: Adipose tissue is one of the most attractive source of stem cells because it can be easily harvested and yields a greater stromal cell density. The multi-lineage potential of adipose-derived stem cells (ADSCs) demonstrates their significant impact within the field of tissue engineering, with studies successfully demonstrating the ability to produce a range of tissue types. However, although, a broad spectrum of applications has already been suggested, many important scientific and medical questions remain unanswered before the clinical application of ADSCs in humans...
April 17, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29667550/in-vitro-studies-on-cytotoxic-dna-protecting-antibiofilm-and-antibacterial-effects-of-biogenic-silver-nanoparticles-prepared-with-bergenia-ciliata-rhizome-extract
#17
Ghazna Zia, Haleema Sadia, Shabnam Nazir, Kiren Ejaz, Shaukat Ali, Ihsan-Ul-Haq, Tariq Iqbal, Muhammad Abdul Rauf Khan, Abida Raza, Saiqa Andleeb
BACKGROUND: Many health hazardous diseases are caused by clinical pathogens. Drug-resistant microbes are one of the major health problems in the world. To overcome the effect of infectious diseases new antimicrobial agent from nature has been explored which is environmentally friendly, less costly and more effective for the development of next-generation drugs. Bergenia ciliata and silver nitrate both have medicinal properties. OBJECTIVES: The aim of the current research was to evaluate the cytotoxic, and antibacterial effect of green synthesized nanoparticles using Bergenia ciliata rhizome against clinical bacterial pathogens...
April 17, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29667342/middle-down-characterization-of-the-cell-cycle-dependence-of-histone-h4-post-translational-modifications-and-proteoforms
#18
Tingting Jiang, Michael E Hoover, Matthew V Holt, Michael A Freitas, Alan G Marshall, Nicolas L Young
Post-translational modifications (PTMs) of histones are important epigenetic regulatory mechanisms that are often dysregulated in cancer. We employ middle-down proteomics to investigate the PTMs and proteoforms of histone H4 during cell cycle progression. We use pH gradient weak cation exchange-hydrophilic interaction liquid chromatography (WCX-HILIC) for on-line liquid chromatography-mass spectrometry analysis to separate and analyze the proteoforms of histone H4. This provides enhanced separation of proteoforms, including positional isomers, and simplifies downstream data analysis...
April 17, 2018: Proteomics
https://www.readbyqxmd.com/read/29667293/enhanced-in-vitro-biocompatibility-and-water-dispersibility-of-magnetite-and-cobalt-ferrite-nanoparticles-employed-as-ros-formation-enhancer-in-radiation-cancer-therapy
#19
Stefanie Klein, Melek Kızaloğlu, Luis Portilla, Hyoungwon Park, Tobias Rejek, Julian Hümmer, Karsten Meyer, Rainer Hock, Luitpold V R Distel, Marcus Halik, Carola Kryschi
Efficient magnetic reactive oxygen species (ROS) formation enhancing agents after X-ray treatment are realized by functionalizing superparamagnetic magnetite (Fe3 O4 ) and Co-ferrite (CoFe2 O4 ) nanoparticles with self-assembled monolayers (SAMs). The Fe3 O4 and CoFe2 O4 nanoparticles are synthesized using Massart's coprecipitation technique. Successful surface modification with the SAM forming compounds 1-methyl-3-(dodecylphosphonic acid) imidazolium bromide, or (2-{2-[2-hydroxy-ethoxy]-ethoxy}-ethyl phosphonic acid provides biocompatibility and long-term stability of the Fe3 O4 and CoFe2 O4 nanoparticles in cell media...
April 18, 2018: Small
https://www.readbyqxmd.com/read/29667176/pre-diagnostic-blood-immune-markers-incidence-and-progression-of-b-cell-lymphoma-and-multiple-myeloma-univariate-and-functionally-informed-multivariate-analyses
#20
Roel Vermeulen, Fatemeh Saberi Hosnijeh, Barbara Bodinier, Lützen Portengen, Benoît Liquet, Javiera Garrido-Manriquez, Henk Lokhorst, Ingvar A Bergdahl, Soterios A Kyrtopoulos, Ann-Sofie Johansson, Panagiotis Georgiadis, Beatrice Melin, Domenico Palli, Vittorio Krogh, Salvatore Panico, Carlotta Sacerdote, Rosario Tumino, Paolo Vineis, Raphaële Castagné, Marc Chadeau-Hyam
Recent prospective studies have shown that dysregulation of the immune system may precede the development of B-cell lymphomas (BCL) in immunocompetent individuals. However, to date, the studies were restricted to a few immune markers, which were considered separately. Using a nested case-control study within two European prospective cohorts, we measured plasma levels of 28 immune markers in samples collected a median of 6 years prior to diagnosis (range, 2.01-15.97) in 268 incident cases of BCL (including multiple myeloma) and matched controls...
April 18, 2018: International Journal of Cancer. Journal International du Cancer
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