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https://www.readbyqxmd.com/read/27933682/high-efficient-intramolecular-electrochemiluminescence-energy-transfer-for-ultrasensitive-bioanalysis-of-aflatoxin-m1
#1
Jiali Liu, Min Zhao, Ying Zhuo, Yaqin Chai, Ruo Yuan
The intermolecular electrochemiluminescence resonance energy transfer (ECL-RET) between luminol and Ru(bpy)32+ was studied extensively to achieve the sensitive bio-analysis owing to the perfect spectral overlap of the donor and acceptor, but it still suffers from the challenging issue of low energy transfer efficiency. Here, the intramolecular ECL-RET towards the novel ECL compound containing the donor of luminol and the acceptor of Ru(bpy)2(mcbpy)2+ was designed and investigated for the first time (The compound was abbreviated as Lum-Ru)...
December 8, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27933661/mutations-in-the-neb-gene-cause-fetal-akinesia-arthrogryposis-multiplex-congenita
#2
Michal Feingold-Zadok, David Chitayat, Karen Chong, Marie Injeyan, Patrick Shannon, Daphne Chapmann, Ron Maymon, Nir Pillar, Orit Reish
OBJECTIVE: We studied a series of patients with fetal akinesia deformation sequence (FADS)/arthrogryposis multiplex congenita (AMC), with nemaline bodies on muscle specimens, that revealed mutations in the NEB gene. METHOD: We pathologically assessed seven cases from three families, who presented with AMC/FADS. Targeted genetic analysis for Ashkenazi Jewish (AJ) mutation (in relevant patients) was followed by next generation sequencing and Multiplex Ligation-dependent Probe Amplification...
December 9, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27933276/acinetobacter-baumannii-isolated-from-lebanese-patients-phenotypes-and-genotypes-of-resistance-clonality-and-determinants-of-pathogenicity
#3
Elias Dahdouh, Micheline Hajjar, Monica Suarez, Ziad Daoud
Introduction:Acinetobacter baumannii is a nosocomial pathogen that usually affects critically ill patients. High mortality rates have been associated with MDR A. baumannii infections. Carbapenem resistance among these isolates is increasing worldwide and is associated with certain International Clones (ICs) and oxacillinases (OXAs). Moreover, this organism possesses a wide range of virulence factors, whose expression is not yet fully understood. In this study, clinical A. baumannii isolates are characterized in terms of antibiotic resistance, mechanisms of carbapenem resistance, clonality, and virulence...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27933271/functional-significance-of-aurora-kinases-p53-protein-family-interactions-in-cancer
#4
REVIEW
Kaori Sasai, Warapen Treekitkarnmongkol, Kazuharu Kai, Hiroshi Katayama, Subrata Sen
Aurora kinases play critical roles in regulating spindle assembly, chromosome segregation, and cytokinesis to ensure faithful segregation of chromosomes during mitotic cell division cycle. Molecular and cell biological studies have revealed that Aurora kinases, at physiological levels, orchestrate complex sequential cellular processes at distinct subcellular locations through functional interactions with its various substrates. Aberrant expression of Aurora kinases, on the other hand, cause defects in mitotic spindle assembly, checkpoint response activation, and chromosome segregation leading to chromosomal instability...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27932758/-expressions-of-her2-and-topo-ii%C3%AE-in-breast-cancer-and-%C3%A2-its-clinical-significance
#5
Ping Shuai
To detect the expressions of human epidermal growth factor receptor 2 (HER2) and Topo IIα in breast cancer, and to analyze the clinical significance of neoadjuvant chemotherapy for the anthracycline-based drugs.
 Methods: The HER2 and Topo IIα gene and protein expressions in cancer tissues from 189 patients with breast cancer were detected by fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC). And the objective response rate (ORR) and pathological complete rate (pCR) were analyzed...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27932754/-overexpression-of-lentivirus-rfx1-and-its-inhibitory-effect-on-proliferation-of-glioblastoma-cells
#6
Kai Cheng, Haojie Sun, Mingzhi Zhang, Li Shen
To construct overexpression lentivirus vector for human regulatory factor X1 (RFX1) gene, and to explore its effect on proliferation of F98 cell line.
 Methods: Huamn RFX1 gene was amplified by polymerase reaction. Gene amplification products were inserted into lentivirus vector pITA, and the lentivirus vector pITA-RFX1 was constructed. The constructed vector was verified by agarose gel electrophoresis and DNA sequencing. Lentivirus vector pITA-RFX1 and virus packaging plasmids were cotransfected into 293T cells, and then transfected into F98 cells...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27932388/from-embryo-to-adult-pirna-mediated-silencing-throughout-germline-development-in-drosophila
#7
Pauline P Marie, Stéphane Ronsseray, Antoine Boivin
In metazoan germ cells, transposable element activity is repressed by small noncoding PIWI-associated RNAs (piRNAs). Numerous studies in Drosophila have elucidated the mechanism of this repression in the adult germline. However, when and how transposable element repression is established during germline development, has not been addressed. Here, we show that homology-dependent trans silencing is active in female primordial germ cells from late embryogenesis through pupal stages, and that genes related to the adult piRNA pathway are required for silencing during development...
December 7, 2016: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27932296/low-density-lipoproteins-amplify-cytokine-signaling-in-chronic-lymphocytic-leukemia-cells
#8
Lindsay McCaw, Yonghong Shi, Guizhi Wang, You-Jun Li, David E Spaner
Recent studies suggest there is a high incidence of elevated low-density lipoprotein (LDL) levels in Chronic Lymphocytic Leukemia (CLL) patients and a survival benefit from cholesterol-lowering statin drugs. The mechanisms of these observations and the kinds of patients they apply to are unclear. Using an in vitro model of the pseudofollicles where CLL cells originate, LDLs were found to increase plasma membrane cholesterol, signaling molecules such as tyrosine-phosphorylated STAT3, and activated CLL cell numbers...
November 30, 2016: EBioMedicine
https://www.readbyqxmd.com/read/27932168/spindle-cell-lipoma-in-an-end-stage-renal-allograft-case-report
#9
Z Zhao, S Selvarajan, A L S Tiong, T H Lim, L Y Khor
BACKGROUND: Spindle cell lipoma is an uncommon variant of lipoma and usually occurs as a solitary, subcutaneous, and well circumscribed lesion in the posterior neck, shoulders, and back of older men. Primary renal lipomas are rarely reported. Spindle cell lipoma in the kidney has not been previously described in the literature. CASE REPORT: A 60-year-old Chinese man suffered graft failure 10 years after living related donor kidney transplantation. During cancer surveillance, he was found to have a mass in the renal allograft, which increased in size and was suspicious for renal cell carcinoma on computerized tomographic scan...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932114/presence-of-t-275a-and-c-2152t-polymorphisms-of-the-promoter-region-of-uridine-diphosphate-glucuronosyltransferase-1a9-increases-mortality-from-digestive-tumors-results-after-10-years-of-follow-up-in-a-renal-transplant-population
#10
N Calvo, A Shabaka, B Rodriguez Cubillo, V López de la Manzanara, I Pérez-Flores, M A Moreno de la Higuera, J Bautista, A I Sánchez-Fructuoso
BACKGROUND: The aim of this study was to determine the distribution of uridine diphosphate-glucuronosyltransferase 1A9 (UGT1A9) promoter region T-275A and C-2152T single-nucleotide polymorphisms (SNPs) in stable transplant patients and to investigate the impact of these SNPs on the evolution of this population after 10 years of follow-up. METHODS: White renal transplant recipients (n = 873) were studied. The median time of follow-up was 91.8 months (P25-75 46-146)...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932063/toward-connecting-metabolism-to-the-exocytotic-site
#11
REVIEW
Mourad Ferdaoussi, Patrick E MacDonald
Within cells the regulated exocytosis of secretory granules controls multiple physiological functions, including endocrine hormone secretion. Release of the glucose-regulating hormone insulin from pancreatic islet β cells is critical for whole-body metabolic homeostasis. Impaired insulin secretion appears early in the progression to type 2 diabetes (T2D). Key mechanisms that control the β-cell exocytotic response, mediating the long-known but little understood metabolic amplification of insulin secretion, are becoming clearer...
December 5, 2016: Trends in Cell Biology
https://www.readbyqxmd.com/read/27931238/elaboration-of-a-nomogram-to-predict-nonsentinel-node-status-in-breast-cancer-patients-with-positive-sentinel-node-intraoperatively-assessed-with-one-step-nucleic-amplification-retrospective-and-validation-phase
#12
Franco Di Filippo, Simona Di Filippo, Anna Maria Ferrari, Raffaele Antonetti, Alessandro Battaglia, Francesca Becherini, Laia Bernet, Renzo Boldorini, Catherine Bouteille, Simonetta Buglioni, Paolo Burelli, Rafael Cano, Vincenzo Canzonieri, Pierluigi Chiodera, Alfredo Cirilli, Luigi Coppola, Stefano Drago, Luca Di Tommaso, Privato Fenaroli, Roberto Franchini, Andrea Gianatti, Diana Giannarelli, Carmela Giardina, Florence Godey, Massimo M Grassi, Giuseppe B Grassi, Siobhan Laws, Samuele Massarut, Giuseppe Naccarato, Maria Iole Natalicchio, Sergio Orefice, Fabrizio Palmieri, Tiziana Perin, Manuela Roncella, Massimo G Roncalli, Antonio Rulli, Angelo Sidoni, Corrado Tinterri, Maria C Truglia, Isabella Sperduti
BACKGROUND: Tumor-positive sentinel lymph node (SLN) biopsy results in a risk of non sentinel node metastases in micro- and macro-metastases ranging from 20 to 50%, respectively. Therefore, most patients underwent unnecessary axillary lymph node dissections. We have previously developed a mathematical model for predicting patient-specific risk of non sentinel node (NSN) metastases based on 2460 patients. The study reports the results of the validation phase where a total of 1945 patients were enrolled, aimed at identifying a tool that gives the possibility to the surgeon to choose intraoperatively whether to perform or not axillary lymph node dissection (ALND)...
December 8, 2016: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/27931045/breast-cancer-in-neurofibromatosis-type-1-overrepresentation-of-unfavourable-prognostic-factors
#13
Elina Uusitalo, Roope A Kallionpää, Samu Kurki, Matti Rantanen, Janne Pitkäniemi, Pauliina Kronqvist, Pirkko Härkönen, Riikka Huovinen, Olli Carpen, Minna Pöyhönen, Sirkku Peltonen, Juha Peltonen
BACKGROUND: An increased breast cancer incidence and poor survival have been reported for women with neurofibromatosis 1 (NF1). To explain the poor survival, we aimed to link the histopathology and clinical characteristics of NF1-associated breast cancers. METHODS: The Finnish Cancer Registry and the Finnish NF Registry were cross-referenced to identify the NF1 patients with breast cancer. Archival NF1 breast cancer specimens were retrieved for histopathological typing and compared with matched controls...
December 8, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27930746/perinatal-natural-history-of-the-ts1cje-mouse-model-of-down-syndrome-growth-restriction-early-mortality-heart-defects-and-delayed-development
#14
Millie A Ferrés, Diana W Bianchi, Ashley E Siegel, Roderick T Bronson, Gordon S Huggins, Faycal Guedj
BACKGROUND: The Ts1Cje model of Down syndrome is of particular interest for perinatal studies because affected males are fertile. This permits affected pups to be carried in wild-type females, which is similar to human pregnancies. Here we describe the early natural history and growth profiles of Ts1Cje embryos and neonates and determine if heart defects are present in this strain. METHODS: Pups were studied either on embryonic (E) day 15.5, or from postnatal (P) day 3 through weaning on P21...
2016: PloS One
https://www.readbyqxmd.com/read/27930648/isothermal-diagnostic-assays-for-monitoring-single-nucleotide-polymorphisms-in-necator-americanus-associated-with-benzimidazole-drug-resistance
#15
Nour Rashwan, Catherine Bourguinat, Kathy Keller, Nipul Kithsiri Gunawardena, Nilanthi de Silva, Roger Prichard
BACKGROUND: Soil-transmitted helminths (STHs) are the most prevalent intestinal helminths of humans, and a major cause of morbidity in tropical and subtropical countries. The benzimidazole (BZ) drugs albendazole (ABZ) and mebendazole (MBZ) are used for treatment of human STH infections and this use is increasing dramatically with massive drug donations. Frequent and prolonged use of these drugs could lead to the emergence of anthelmintic resistance as has occurred in nematodes of livestock...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27930439/loss-of-pulse-pressure-amplification-between-the-ascending-and-descending-aorta-in-patients-after-an-aortic-arch-repair
#16
Tomoaki Murakami, Masahiro Shiraishi, Tomohiro Nawa, Atsuhito Takeda
INTRODUCTION: One of the most important problems in patients with an aortic coarctation after an aortic arch repair is future cardiovascular disease. We previously reported the enhancement of the aortic pressure wave reflection in patients and hypothesized that the enhancement was caused by a new pressure wave reflection generated from the repaired site. To prove the hypothesis, we analyzed the pressure waveform in the ascending and descending aorta and examined their pulse pressure (PP) amplification...
December 7, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27929588/use-of-%C3%AE-cyclodextrin-tethered-cationic-polymer-based-fluorescence-enhancement-of-pyrene-and-hybridization-chain-reaction-for-the-enzyme-free-amplified-detection-of-dna
#17
Chunxia Song, Bingjie Li, Xiaohai Yang, Kemin Wang, Qing Wang, Jianbo Liu, Jin Huang
Herein, we proposed an enzyme-free strategy for the amplified detection of DNA by combining the efficient fluorescence enhancement capability of a β-cyclodextrin-tethered cationic polymer (cationic polyβ-CD) to pyrene with the amplification capability of target DNA triggered hybridization chain reaction (HCR). Cationic polyβ-CD with positive charge was synthesized. Two hairpin probes, H1 and H2, were employed in the system and the pyrene-labelled H2 was chosen as the signal unit. The pyrene attached on the sticky end of H2 was flexible and there was strong electrostatic interaction between cationic polyβ-CD and negatively-charged H2, so pyrene could easily enter the cavity of CD that is tethered on the cationic polymer, accompanied by significant fluorescence enhancement...
December 8, 2016: Analyst
https://www.readbyqxmd.com/read/27929459/perturbations-of-circulating-mirnas-in-irritable-bowel-syndrome-detected-using-a-multiplexed-high-throughput-gene-expression-platform
#18
Nicolaas H Fourie, Ralph M Peace, Sarah K Abey, LeeAnne B Sherwin, John W Wiley, Wendy A Henderson
The gene expression platform assay allows for robust and highly reproducible quantification of the expression of up to 800 transcripts (mRNA or miRNAs) in a single reaction. The miRNA assay counts transcripts by directly imaging and digitally counting miRNA molecules that are labeled with color-coded fluorescent barcoded probe sets (a reporter probe and a capture probe). Barcodes are hybridized directly to mature miRNAs that have been elongated by ligating a unique oligonucleotide tag (miRtag) to the 3' end...
November 30, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27929456/high-throughput-detection-of-respiratory-pathogens-in-animal-specimens-by-nanoscale-pcr
#19
Laura B Goodman, Renee R Anderson, Marcia Slater, Elen Ortenberg, Randall W Renshaw, Brittany D Chilson, Melissa A Laverack, John S Beeby, Edward J Dubovi, Amy L Glaser
Nanoliter scale real-time PCR uses spatial multiplexing to allow multiple assays to be run in parallel on a single plate without the typical drawbacks of combining reactions together. We designed and evaluated a panel based on this principle to rapidly identify the presence of common disease agents in dogs and horses with acute respiratory illness. This manuscript describes a nanoscale diagnostic PCR workflow for sample preparation, amplification, and analysis of target pathogen sequences, focusing on procedures that are different from microliter scale reactions...
November 28, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27929353/enhanced-survival-but-not-amplification-of-francisella-spp-in-the-presence-of-free-living-amoebae
#20
Helen Y Buse, Frank W Schaefer, Eugene W Rice
Transmission of Francisella tularensis, the etiologic agent of tularemia, has been associated with various water sources. Survival of many waterborne pathogens within free-living amoeba (FLA) is well documented; however, the role of amoebae in the environmental persistence of F. tularensis is unclear. In this study, axenic FLA cultures of Acanthamoeba castellanii, Acanthamoeba polyphaga, and Vermamoeba vermiformis were each inoculated with virulent strains of F. tularensis (Types A and B), the attenuated live vaccine strain, and Francisella novicida...
December 8, 2016: Acta Microbiologica et Immunologica Hungarica
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