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https://www.readbyqxmd.com/read/29909220/worse-than-cell-lysis-the-resilience-of-oscillatoria-sp-during-sludge-storage-in-drinking-water-treatment
#1
Jiongming Sun, Hangzhou Xu, Haiyan Pei, Yan Jin, Hongmin Li, Chunxia Ma
Benthic Oscillatoria sp. may form dense surface blooms especially under eutrophic and calm conditions, which poses a threat to drinking water safety because it can produce toxic and odorous metabolites. This is the first study to investigate the effect of the conventional coagulant polyaluminium ferric chloride (PAFC) on removal of Oscillatoria sp., and the behavior of Oscillatoria sp. cells in sludges formed from different dosages of PAFC (control, optimum, and overdose system) during storage was also studied...
June 9, 2018: Water Research
https://www.readbyqxmd.com/read/29909172/metallo-%C3%AE-lactamases-and-class-d-carbapenemases-in-south-east-of-tunisia-implication-of-mobile-genetic-elements-in-their-dissemination
#2
Olfa Dziri, Carla Andrea Alonso, Raoudha Dziri, Haythem Gharsa, Abderrahmen Maraoub, Carmen Torres, Chedly Chouchani
Carbapenem resistance in Gram-negative bacteria constitutes a major clinical problem. We propose to characterize molecular features among carbapenem-resistant Gram-negative clinical isolates collected from Southeastern Tunisian Island Hospital. Eighteen carbapenem-resistant clinical isolates (13 Klebsiella pneumoniae, 1 Proteus mirabilis, 1 Enterobacter cloacae, 3 Acinetobacter baumannii) were recovered during April 2015-August 2016. Molecular characterization of antimicrobial resistance was performed by PCR and sequencing...
June 14, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29909095/molecular-characterization-of-a-nosocomial-outbreak-of-influenza-b-virus-in-an-acute-care-hospital-setting
#3
Martina Sansone, Åsa Wiman, Maria Lind Karlberg, Maria Brytting, Lars Bohlin, Lars-Magnus Andersson, Johan Westin, Rickard Nordén
BACKGROUND/AIM: To describe a hospital outbreak of influenza B (InfB) virus infection during season 2015/2016 by combining clinical and epidemiological data with molecular methods. METHODS: Twenty patients diagnosed with InfB from a hospital outbreak during a four-week-period were included. Nasopharyngeal swabs (NPS) positive for InfB by multiplex real-time PCR were sent for lineage typing and whole genome sequencing (WGS). Medical records were retrospectively reviewed for data regarding patient characteristics, localisation, exposure and outcome and assembled into a timeline...
June 14, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29909007/early-emergence-of-de-novo-egfr-t790-m-gatekeeper-mutations-during-erlotinib-treatment-in-pc9-non-small-cell-lung-cancer-cells
#4
Sujin Kim, Angela Kj Park, Jeonghee Cho
The emergence of the T790 M gatekeeper mutation in the Epidermal Growth Factor Receptor (EGFR) gene is an important mechanism that can lead to the acquired resistance to EGFR-targeted tyrosine kinase inhibitors such as erlotinib or gefitinib. These drugs have been used in treating a subset of non-small cell lung cancer (NSCLC) patients harboring EGFR activating mutations. Here we investigated the paths leading to the acquisition of the T790 M mutation by establishing an erlotinib resistant PC9 cell model harboring ectopically introduced EGFR cDNA...
June 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29908861/label-free-detection-of-exonuclease-iii-activity-and-its-inhibition-based-on-dna-hairpin-probe
#5
Xiafei Jiang, Haisheng Liu, Farjana Yeasmin Khusbu, Changbei Ma, Anqi Ping, Qiling Zhang, Kefeng Wu, Mingjian Chen
In this paper, we have developed a label-free and rapid fluorescence assay for the detection of exonuclease III (exo III) activity via thioflavin T (ThT) as the G-quadruplex inducer. In this assay, a hairpin probe (HP) with a 5'-guanine-rich (G-rich) sequence is employed as the substrate for exo III. In the presence of exo III, HP can be digested at 3'-OH termini releasing 5'-G-rich sequence. Then, the 5'-G-rich sequence folds into a G-quadruplex, which can be recognized quickly by the ThT dye resulting in an increase in fluorescence emission...
June 14, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29907874/nearing-saturation-of-cancer-driver-gene-discovery
#6
EDITORIAL
David Hsiehchen, Antony Hsieh
Extensive sequencing efforts of cancer genomes such as The Cancer Genome Atlas (TCGA) have been undertaken to uncover bona fide cancer driver genes which has enhanced our understanding of cancer and revealed therapeutic targets. However, the number of driver gene mutations is bounded, indicating that there must be a point when further sequencing efforts will be excessive. We found that there was a significant positive correlation between sample size and identified driver gene mutations across 33 cancers sequenced by the TCGA, which is expected if additional sequencing is still leading to the identification of more driver genes...
June 15, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29907293/a-homogeneous-anti-dsdna-antibody-based-assay-for-multicolor-detection-of-cancer-stem-cell-transcription-factors
#7
Jiehua Ma, Hai Shi, Meiling Zhang, Chao Li, Yang Xiang, Ping Liu
Cancer stem cells (CSCs) are responsible for maintaining tumor growth, metastasis and recurrence. The high expression of cancer stem cell transcription factors (Oct4, Sox2 and Nanog) is a valuable prognostic factor, suggesting a higher risk of tumor recurrence and metastasis. So, the development of a convenient and cost-effective method for multiplex assay of these transcription factors (TFs) is highly required. In this work, we have proposed a universal homogeneous assay for multicolor detection of these TFs based on anti-dsDNA antibody-decorated Fe3 O4 magnetite nanoparticles (aadMNPs)...
October 31, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29907165/management-of-ocular-human-herpesvirus-1-infection-in-a-white%C3%A2-faced-saki-monkey-pithecia-pithecia
#8
Kendra L Bauer, James C Steeil, Elizabeth A Adkins, April L Childress, James F X Wellehan, Kenton L Kerns, Steven J Sarro, Kali A Holder
A 20-y-old male intact white-faced saki monkey (Pithecia pithecia) presented with an acute ocular disease of the righteye.Clinical signs included periocular swelling, conjunctivitis, and anisocoria with a miotic right pupil. Conjunctival swabs werepositive for Human herpesvirus 1 (HHV1) according to PCR amplification with sequencing. Initial clinical signs resolvedwith supportive treatment, and the animal was managed chronically by using acyclovir (5 mg/kg PO twice daily) during flare-ups. After more than 2 y, the progression of clinical disease led to enucleation of the right eye...
June 15, 2018: Comparative Medicine
https://www.readbyqxmd.com/read/29906676/the-relationship-between-volatile-fatty-acids-accumulation-and-microbial-community-succession-triggered-by-excess-sludge-alkaline-fermentation
#9
Xiangkun Li, Gaige Liu, Shuli Liu, Kaili Ma, Lingwei Meng
The volatile fatty acids (VFAs) accumulation pattern and microbial community succession were studied during excess sludge (ES) alkaline fermentation at pH of 10.0 with expanded granular sludge blanket reactor over 5 cyclers. Microbial community shifted conspicuously as ES suffered alkaline fermentation. Both VFAs and acid-producing bacteria increased rapidly during the first 8 days fermentation time, and they showed a quite positive correlation relationship. In addition, soluble chemical oxygen demand (SCOD) also dramatically increased during the first 8 days, which implied 8 day was the optimum sludge retention time (SRT) for ES alkaline fermentation and VFAs accumulation time...
June 12, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29906486/pathophysiological-consequences-of-isoform-specific-ip-3-receptor-mutations
#10
REVIEW
Martijn Kerkhofs, Bruno Seitaj, Hristina Ivanova, Giovanni Monaco, Geert Bultynck, Jan B Parys
Ca2+ signaling governs a diverse range of cellular processes and, as such, is subject to tight regulation. A main component of the complex intracellular Ca2+ -signaling network is the inositol 1,4,5-trisphosphate (IP3 ) receptor (IP3 R), a tetrameric channel that mediates Ca2+ release from the endoplasmic reticulum (ER) in response to IP3 . IP3 R function is controlled by a myriad of factors, such as Ca2+ , ATP, kinases and phosphatases and a plethora of accessory and regulatory proteins. Further complexity in IP3 R-mediated Ca2+ signaling is the result of the existence of three main isoforms (IP3 R1, IP3 R2 and IP3 R3) that display distinct functional characteristics and properties...
June 12, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29906453/immunization-with-tumor-neoantigens-displayed-on-t7-phage-nanoparticles-elicits-plasma-antibody-and-vaccine-draining-lymph-node-b-cell-responses
#11
Girja S Shukla, Yu-Jing Sun, Stephanie C Pero, Giselle S Sholler, David N Krag
The aim of this preclinical study was to evaluate T7 bacteriophage as a nanoparticle platform for expression of neoantigens that could allow rapid generation of vaccines for potential studies in human cancer patients. We have generated recombinant T7 phage vaccines carrying neoepitopes derived from mutated proteins of B16-F10 melanoma tumor cells. With the single mutated amino acid (AA) centered, peptides were expressed on the outer coat of T7 phage. All peptides with 11 and 34 AAs were successfully expressed...
June 12, 2018: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29905532/chronic-vitamin-d-insufficiency-impairs-physical-performance-in-c57bl-6j-mice
#12
Kenneth L Seldeen, Manhui Pang, Merced M Leiker, Jonathan E Bard, Maria Rodríguez-Gonzalez, Mireya Hernandez, Zachary Sheridan, Norma Nowak, Bruce R Troen
Vitamin D insufficiency (serum 25-OH vitamin D < 30 ng/ml) affects 70-80% of the general population, yet the long-term impacts on physical performance and the progression of sarcopenia are poorly understood. We therefore followed 6-month-old male C57BL/6J mice ( n =6) consuming either sufficient (STD, 1000 IU) or insufficient (LOW, 125 IU) vitamin D3/kg chow for 12 months (equivalent to 20-30 human years). LOW supplemented mice exhibited a rapid decline of serum 25-OH vitamin D levels by two weeks that remained between 11-15 ng/mL for all time points thereafter...
June 14, 2018: Aging
https://www.readbyqxmd.com/read/29904570/longitudinal-relationship-between-forgiveness-of-self-and-forgiveness-of-others-among-individuals-with-alcohol-use-disorders
#13
Amy R Krentzman, Jon R Webb, Jennifer M Jester, J Irene Harris
Previous research has suggested that forgiveness of self and forgiveness of others might function differently over the course of addiction recovery. However, we know little about the longitudinal process of these dimensions of forgiveness for individuals addressing alcohol-use disorders. Increased knowledge would inform the content and sequencing of intervention strategies. Three hundred and sixty-four individuals managing alcohol dependence participated in a 30-month longitudinal study, reporting their capacity to forgive self and to forgive others every 6 months...
May 2018: Psychology of Religion and Spirituality
https://www.readbyqxmd.com/read/29903927/time-course-of-cerebral-perfusion-changes-in-children-with-migraine-with-aura-mimicking-stroke
#14
K M Cobb-Pitstick, N Munjal, R Safier, D D Cummings, G Zuccoli
Hemiplegic migraine is a common cause of acute brain attack in pediatrics. MR imaging sequences useful in differentiating hemiplegic migraine from other entities include arterial spin-labeling, SWI, MRA, and DWI. There has been limited exploration on the simultaneous use of these sequences in pediatrics. We present 12 pediatric patients with acute hemiplegic migraine or migraine with aura who underwent MR imaging within 12 hours of symptom onset. Quantitative and qualitative analyses were performed on arterial spin-labeling; and qualitative analysis, on SWI and MRA sequences...
June 14, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29903723/long-read-sequencing-of-nascent-rna-reveals-coupling-among-rna-processing-events
#15
Lydia Herzel, Korinna Straube, Karla M Neugebauer
Pre-mRNA splicing is accomplished by the spliceosome, a megadalton complex that assembles de novo on each intron. Because spliceosome assembly and catalysis occur cotranscriptionally, we hypothesized that introns are removed in the order of their transcription in genomes dominated by constitutive splicing. Remarkably little is known about splicing order and the regulatory potential of nascent transcript remodeling by splicing, due to the limitations of existing methods that focus on analysis of mature splicing products (mRNAs) rather than substrates and intermediates...
June 14, 2018: Genome Research
https://www.readbyqxmd.com/read/29903187/-preparation-of-monoclonal-antibody-against-cystatin-c-and-establishment-of-its-immunoassay-system
#16
Yizhan Yu, Tingting Yang, Pei Liu, Nianchao Wang, Yan Lu, Yahong Huang, Pingping Shen
OBJECTIVE: To prepare human cystatin C( CysC) recombinant protein and produce monoclonal antibodies with high affinity and specificity. Develop a competitive ELISA detection system to detect of CysC in human serum. METHODS: The CysC gene sequence was found on NCBI. The optimized gene fragments were synthesized and the recombinant CysC protein was expressed in Escherichia coli then used to immunize Balb/c mice. The positive hybridoma cell lines were obtained by hybridoma cell fusion techniques and ascites monoclonal antibody was prepared and purified...
July 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29902966/transcriptional-and-physiological-analyses-of-short-term-iron-deficiency-response-in-apple-seedlings-provide-insight-into-the-regulation-involved-in-photosynthesis
#17
Yan-Xiu Wang, Ya Hu, Yan-Fang Zhu, Abdul Wahid Baloch, Xu-Mei Jia, Ai-Xia Guo
BACKGROUND: Iron (Fe) is an essential micronutrient for plants. Utilization of Fe deficiency-tolerant rootstock is an effective strategy to prevent Fe deficiency problems in fruit trees production. Malus halliana is an apple rootstock that is resistant to Fe deficiency; however, few molecular studies have been conducted on M. halliana. RESULTS: To evaluate short-term molecular response of M. halliana leaves under Fe deficiency condition, RNA sequencing (RNA-Seq) analyses were conducted at 0 (T1), 0...
June 15, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29902575/a-data-driven-framework-of-typical-treatment-process-extraction-and-evaluation
#18
Jingfeng Chen, Leilei Sun, Chonghui Guo, Wei Wei, Yanming Xie
BACKGROUND: A clinical pathway (CP) defines a standardized care process for a well-defined patient group that aims to improve patient outcomes and promote patient safety. However, the construction of a new pathway from scratch is a time-consuming task for medical staff because it involves many factors, including objects, multidisciplinary collaboration, sequential design, and outcome measurements. Recently, the rapid development of hospital information systems has allowed the storage of large volumes of electronic medical records (EMRs), and this information constitutes an abundant data resource for building CPs using data-mining methods...
June 11, 2018: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/29902563/fclip-seq-for-transcriptomic-footprinting-of-dsrna-binding-proteins-lessons-from-drosha
#19
Baekgyu Kim, V Narry Kim
CLIP-seq (crosslinking immunoprecipitation and sequencing) is widely used to map the binding sites of a protein of interest on the transcriptome, and generally employs UV to induce the covalent bonds between protein and RNA, which allows stringent washing. However, dsRNA is inefficiently crosslinked by UV, making it difficult to study the interactions between dsRNA binding proteins and their substrates. A dsRNA endoribonuclease DROSHA initiates the maturation of microRNA (miRNA) by cleaving primary miRNA (pri-miRNA)...
June 11, 2018: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29902212/a-rapid-multiplex-pcr-assay-for-presumptive-species-identification-of-rhinoceros-horns-and-its-implementation-in-vietnam
#20
Kyle M Ewart, Greta J Frankham, Ross McEwing, Dang Tat The, Carolyn J Hogg, Claire Wade, Nathan Lo, Rebecca N Johnson
Rhinoceros (rhinos) have suffered a dramatic increase in poaching over the past decade due to the growing demand for rhino horn products in Asia. One way to reverse this trend is to enhance enforcement and intelligence gathering tools used for species identification of horns, in particular making them fast, inexpensive and accurate. Traditionally, species identification tests are based on DNA sequence data, which, depending on laboratory resources, can be either time or cost prohibitive. This study presents a rapid rhino species identification test, utilizing species-specific primers within the cytochrome b gene multiplexed in a single reaction, with a presumptive species identification based on the length of the resultant amplicon...
2018: PloS One
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