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https://www.readbyqxmd.com/read/28340408/ongoing-evolution-of-pseudomonas-aeruginosa-pao1-sublines-complicates-studies-of-dna-damage-repair-and-tolerance
#1
Julia Sidorenko, Tatjana Jatsenko, Maia Kivisaar
Sublines of the major P. aeruginosa reference strain PAO1 are derivatives of the original PAO1 isolate, which are maintained in laboratories worldwide. These sublines display substantial genomic and phenotypic variation due to ongoing microevolution. Here, we examined four sublines, MPAO1, PAO1-L, PAO1-DSM and PAO1-UT, originated from different laboratories, and six DNA polymerase-deficient mutants from the P. aeruginosa MPAO1 transposon library for their employment in elucidation of DNA damage repair and tolerance mechanisms in P...
March 16, 2017: Mutation Research
https://www.readbyqxmd.com/read/28339187/accurate-mirna-analysis-in-crude-cell-lysate-by-capillary-electrophoresis-based-hybridization-assay-in-comparison-with-quantitative-reverse-transcription-polymerase-chain-reaction
#2
Liang Hu, Alexander S Stasheuski, David W Wegman, Nan Wu, Burton B Yang, Heyam Hayder, Chun Peng, Stanley K Liu, George M Yousef, Sergey N Krylov
Accurate quantitation of microRNA (miRNA) in tissue samples is required for validation and clinical use of miRNA-based disease biomarkers. Since sample processing, such as RNA extraction, introduces undesirable biases, it is advantageous to measure miRNA in a crude cell lysate. Here we report on accurate miRNA quantitation in crude cell lysate by a CE-based hybridization assay termed direct quantitative analysis of multiple miRNAs (DQAMmiR). Accuracy and precision of miRNA quantitation were determined for miRNA samples in a crude cell lysate, RNA extract from the lysate, and a pure buffer...
March 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28339086/identification-of-novel-mutations-in-endometrial-cancer-patients-by-whole-exome-sequencing
#3
Ya-Sian Chang, Hsien-Da Huang, Kun-Tu Yeh, Jan-Gowth Chang
The aim of the present study was to identify genomic alterations in Taiwanese endometrial cancer patients. This information is vitally important in Taiwan, where endometrial cancer is the second most common gynecological cancer. We performed whole-exome sequencing on DNA from 14 tumor tissue samples from Taiwanese endometrial cancer patients. We used the Genome Analysis Tool kit software package for data analysis, and the dbSNP, Catalogue of Somatic Mutations in Cancer (COSMIC) and The Cancer Genome Atlas (TCGA) databases for comparisons...
March 20, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28339067/characterization-of-dapk1-as-a-novel-transcriptional-target-of-brms1
#4
Xiaojing Qiao, Xi Yang, Yiren Zhou, Xinyu Mei, Jianming Dou, Wenjuan Xie, Guoqing Li, Yekai Wang, Shouyi Qiao, Jianwei Hu, Yanhua Wu
Breast cancer metastasis suppressor 1 (BRMS1) can specifically regulate tumor metastasis in many cancers. Our previous studies have demonstrated that BRMS1 can promote cell apoptosis through regulating osteopontin (OPN) expression in hepatocellular carcinoma (HCC) cells. However, the transcriptional targets of BRMS1 have not been thoroughly studied. In this study, death-associated protein kinase 1 (DAPK1), a tumor suppressor gene with multiple roles in regulating cell death, was identified as a potential transcriptional target of BRMS1 in the whole genome expression microarray...
March 23, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28338983/multi-site-clinical-assessment-of-myalgic-encephalomyelitis-chronic-fatigue-syndrome-mcam-design-and-implementation-of-a-prospective-retrospective-rolling-cohort-study
#5
Elizabeth R Unger, Jin-Mann S Lin, Hao Tian, Benjamin H Natelson, Gudrun Lange, Diana Vu, Michelle Blate, Nancy G Klimas, Elizabeth G Balbin, Lucinda Bateman, Ali Allen, Charles W Lapp, Wendy Springs, Andreas M Kogelnik, Catrina C Phan, Joan Danver, Richard N Podell, Trisha Fitzpatrick, Daniel L Peterson, C Gunnar Gottschalk, Mangalathu S Rajeevan
In the Multi-Site Clinical Assessment of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (MCAM), we relied on expert clinician diagnoses to enroll patients from 7 specialty clinics in the United States in order to perform a systematic collection of data on measures of myalgic encephalomyelitis (ME)/chronic fatigue syndrome (CFS). Healthy persons and those with other illnesses that share some features with ME/CFS were enrolled in comparison groups. The major objectives were to: 1) use standardized questionnaires to measure illness domains of ME/CFS and to evaluate patient heterogeneity overall and between clinics; 2) describe the course of illness, identify the measures that best correlate with meaningful clinical differences, and assess the performances of questionnaires as patient/person-reported outcome measures; 3) describe prescribed medications, orders for laboratory and other tests, and management tools used by expert clinicians to care for persons with ME/CFS; 4) collect biospecimens for future hypothesis testing and for evaluation of morning cortisol profiles; and 5) identify measures that best distinguish persons with ME/CFS from those in the comparison groups and detect subgroups of persons with ME/CFS who may have different underlying causes...
March 17, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28338942/structure-and-mechanism-of-benzaldehyde-dehydrogenase-from-pseudomonas-putida-atcc-12633-a-member-of-the-class-3-aldehyde-dehydrogenase-superfamily
#6
Megan P D Zahniser, Shreenath Prasad, Malea M Kneen, Cheryl A Kreinbring, Gregory A Petsko, Dagmar Ringe, Michael J McLeish
Benzaldehyde dehydrogenase from Pseudomonas putida (PpBADH) belongs to the Class 3 aldehyde dehydrogenase (ALDH) family. The Class 3 ALDHs are unusual in that they are generally dimeric (rather than tetrameric), relatively non-specific and utilize both NAD+ and NADP+. To date, X-ray structures of three Class 3 ALDHs have been determined, of which only two have cofactor bound, both in the NAD+ form. Here we report the crystal structure of PpBADH in complex with NADP+ and a thioacyl intermediate adduct. The overall architecture of PpBADH resembles that of most other members of the ALDH superfamily, and the cofactor binding residues are well conserved...
March 9, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/28338828/validity-of-a-dietary-questionnaire-assessed-by-comparison-with-multiple-weighed-dietary-records-or-24-hour-recalls
#7
Changzheng Yuan, Donna Spiegelman, Eric B Rimm, Bernard A Rosner, Meir J Stampfer, Junaidah B Barnett, Jorge E Chavarro, Amy F Subar, Laura K Sampson, Walter C Willett
The authors evaluated the validity of a 152-item semiquantitative food frequency questionnaire (SFFQ) by comparing it with two 7-day dietary records (7DDRs) or up to 4 automated self-administered 24-hour recalls (ASA24s) over a 1-year period in the women's Lifestyle Validation Study (2010-2012), conducted among subgroups of the Nurses' Health Studies. Intakes of energy and 44 nutrients were assessed using the 3 methods among 632 US women. Compared with the 7DDRs, SFFQ responses tended to underestimate sodium intake but overestimate intakes of energy, macronutrients, and several nutrients in fruits and vegetables, such as carotenoids...
February 25, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28338303/what-is-the-quickest-scoring-system-to-predict-percutaneous-nephrolithotomy-outcomes-a-comparative-study-among-s-t-o-n-e-score-guy-s-stone-score-and-croes-nomogram
#8
Fabio C Vicentini, Felipe R Serzedello, Kay Thomas, Giovanni S Marchini, Fabio C M Torricelli, Miguel Srougi, Eduardo Mazzucchi
OBJECTIVE: To compare the application time and the capacity of the nomograms to predict the success of Guy's Stone Score (GSS), S.T.O.N.E. Nephrolithometry (STONE) and Clinical Research Office of the Endourological Society nephrolithometric nomogram (CROES) of percutaneous nephrolithotomy (PCNL), evaluating the most efficient one for clinical use. MATERIALS AND METHODS: We studied 48 patients who underwent PCNL by the same surgeon between 2010 and 2011. We calculated GSS, STONE and CROES based on preoperative non-contrast computed tomography (CT) images and clinical data...
March 24, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28337645/maintenance-of-memory-for-melodies-articulation-or-attentional-refreshing
#9
Michael A Nees, Ellen Corrini, Peri Leong, Joanna Harris
Past research on the effects of articulatory suppression on working memory for nonverbal sounds has been characterized by discrepant findings, which suggests that multiple mechanisms may be involved in the rehearsal of nonverbal sounds. In two experiments we examined the potential roles of two theoretical mechanisms of verbal working memory-articulatory rehearsal and attentional refreshing-in the maintenance of memory for short melodies. In both experiments, participants performed a same-different melody comparison task...
March 23, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28337419/smile-esthetics-evaluation-of-long-term-changes-in-the-transverse-dimension
#10
Sercan Akyalcin, Kenner Misner, Jeryl D English, Wick G Alexander, J Moody Alexander, Ron Gallerano
OBJECTIVE: To analyze the long-term changes in maxillary arch widths and buccal corridor ratios in orthodontic patients treated with and without premolar extractions. METHODS: The study included 53 patients who were divided into the extraction (n = 28) and nonextraction (n = 25) groups. These patients had complete orthodontic records from the pretreatment (T1), posttreatment (T2), and postretention (T3) periods. Their mean retention and postretention times were 4 years 2 months and 17 years 8 months, respectively...
March 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28337128/connexin36-expression-in-the-mammalian-retina-a-multiple-species-comparison
#11
Tamás Kovács-Öller, Gábor Debertin, Márton Balogh, Alma Ganczer, József Orbán, Miklós Nyitrai, Lajos Balogh, Orsolya Kántor, Béla Völgyi
Much knowledge about interconnection of human retinal neurons is inferred from results on animal models. Likewise, there is a lack of information on human retinal electrical synapses/gap junctions (GJ). Connexin36 (Cx36) forms GJs in both the inner and outer plexiform layers (IPL and OPL) in most species including humans. However, a comparison of Cx36 GJ distribution in retinas of humans and popular animal models has not been presented. To this end a multiple-species comparison was performed in retinas of 12 mammals including humans to survey the Cx36 distribution...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28337078/comparison-of-the-efficacy-and-safety-of-2-acetaminophen-dosing-regimens-in-febrile-infants-and-children-a-report-on-3-legacy-studies
#12
Anthony R Temple, Brenda Zimmerman, Cathy Gelotte, Edwin K Kuffner
OBJECTIVE: Compare efficacy and safety of 10 to 15 mg/kg with 20 to 30 mg/kg acetaminophen in febrile children 6 months to ≤ 11 years from 3 double-blind, randomized, single or multiple dose studies. METHODS: Doses were compared on sum of the temperature differences (SUMDIFF), maximum temperature difference (MAXDIFF), temperature differences at each time point, and dose by time interactions. Alanine aminotransferase (ALT) was evaluated in the 72-hour duration study...
January 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/28336930/tp53-arg72pro-mortality-after-cancer-and-all-cause-mortality-in-105-200-individuals
#13
Jakob B Kodal, Signe Vedel-Krogh, Camilla J Kobylecki, Børge G Nordestgaard, Stig E Bojesen
Rs1042522 (Arg72Pro) is a functional polymorphism of TP53. Pro72 has been associated with lower all-cause mortality and lower mortality after cancer. We hypothesized that TP53 Pro72 is associated with lower mortality after cancer, lower all-cause mortality, and with increased cancer incidence in the general population in a contemporary cohort. We genotyped 105,200 individuals aged 20-100 years from the Copenhagen General Population Study, recruited in 2003-2013, and followed them in Danish health registries...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28336784/evaluation-of-the-effect-of-fingolimod-treatment-on-microglial-activation-using-serial-pet-imaging-in-multiple-sclerosis
#14
Marcus Sucksdorff, Eero Rissanen, Jouni Tuisku, Salla Nuutinen, Teemu Paavilainen, Johanna Rokka, Juha Rinne, Laura Airas
Traditionally, multiple sclerosis (MS) has been considered a white matter (WM) disease with focal inflammatory lesions. It is, however, becoming clear that significant pathology, such as microglial activation, also takes place outside the plaque areas, i.e. in areas of normal appearing white matter (NAWM) and gray matter (GM). Microglial activation can be detected in vivo using an 18 kDa translocator protein (TSPO) binding radioligands and positron emission tomography (PET). It is unknown whether fingolimod affects microglial activation in MS...
March 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28336567/sox9-is-an-astrocyte-specific-nuclear-marker-in-the-adult-brain-outside-the-neurogenic-regions
#15
Wei Sun, Adam Cornwell, Jiashu Li, Sisi Peng, M Joana Osorio, Nadia Aalling Su Wanga, Abdellatif Benraiss, Nanhong Lou, Steven A Goldman, Maiken Nedergaard
Astrocytes have in recent years become the focus of intense experimental interest, yet markers for their definitive identification remain both scarce and imperfect. Astrocytes may be recognized as such by their expression of glial fibrillary acidic protein (GFAP), glutamine synthetase (GS), glutamate transporter 1 (GLT1)quaporin-4 (AQP4)ldehyde dehydrogenase 1 family member L1 (ALDH1L1)nd other proteins. Yet these proteins may all be regulated both developmentally and functionally, restricting their utility...
March 23, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28336415/sncam-as-a-specific-marker-of-peripheral-demyelination
#16
Adam Niezgoda, Sławomir Michalak, Jacek Losy, Alicja Kalinowska-Łyszczarz, Wojciech Kozubski
Adhesion molecules are involved in nerve growth, synaptic plasticity and myelin formation and maintenance process. Neural cell adhesion molecule (CD56 or NCAM) seems to play a crucial role in all the above-mentioned events. Having found poly-sialylated NCAM increased re-expression on demyelinated axons within multiple sclerosis plaques we assessed soluble NCAM (sNCAM) in sera of patients with various types of peripheral nerve affections - demyelinating, axonal "inflammatory", axonal metabolic polyneuropathies and healthy controls...
March 20, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28336096/multigenerational-effects-of-two-glucocorticoids-prednisolone-and-dexamethasone-on-life-history-parameters-of-crustacean-ceriodaphnia-dubia-cladocera
#17
Navdeep Bal, Anupama Kumar, Jun Du, Dayanthi Nugegoda
Synthetic glucocorticoids (GCs) such as dexamethasone (DEX) and prednisolone (PDS) have been used since the 1940s to cure inflammatory and auto-immune disorders. Their use has been linked to a host of deleterious effects in aquatic ecosystems such as osteoporosis in vertebrates, developmental impairments in molluscs and reduced fecundity and growth in cladocerans. Apart from these handful of studies, the effects of GCs on aquatic biota are largely unknown. The present study is a first of its kind aiming to assess the multi-generational exposure effects of DEX and PDS on the life history parameters of Ceriodaphnia dubia (C...
March 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28335788/accuracy-of-left-ventricular-ejection-fraction-by-contemporary-multiple-gated-acquisition-scanning-in-patients-with-cancer-comparison-with-cardiovascular-magnetic-resonance
#18
Hans Huang, Prabhjot S Nijjar, Jeffrey R Misialek, Anne Blaes, Nicholas P Derrico, Felipe Kazmirczak, Igor Klem, Afshin Farzaneh-Far, Chetan Shenoy
BACKGROUND: Multiple gated acquisition scanning (MUGA) is a common imaging modality for baseline and serial assessment of left ventricular ejection fraction (LVEF) for cardiotoxicity risk assessment prior to, surveillance during, and surveillance after administration of potentially cardiotoxic cancer treatment. The objective of this study was to compare the accuracy of left ventricular ejection fractions (LVEF) obtained by contemporary clinical multiple gated acquisition scans (MUGA) with reference LVEFs from cardiovascular magnetic resonance (CMR) in consecutive patients with cancer...
March 24, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28335471/mobile-phonocardiogram-diagnosis-in-newborns-using-support-vector-machine
#19
Amir Mohammad Amiri, Mohammadreza Abtahi, Nick Constant, Kunal Mankodiya
Phonocardiogram (PCG) monitoring on newborns is one of the most important and challenging tasks in the heart assessment in the early ages of life. In this paper, we present a novel approach for cardiac monitoring applied in PCG data. This basic system coupled with denoising, segmentation, cardiac cycle selection and classification of heart sound can be used widely for a large number of the data. This paper describes the problems and additional advantages of the PCG method including the possibility of recording heart sound at home, removing unwanted noises and data reduction on a mobile device, and an intelligent system to diagnose heart diseases on the cloud server...
March 18, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28334727/discovering-the-relative-efficacy-of-inhaled-medications-for-chronic-obstructive-pulmonary-disease-multiple-treatment-comparisons
#20
Ying Zhu, Tong Zhang, Haiyan Li, Yang Yang, Qiong Chen, Lei Kong, Bo Tai
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is managed by three major classes of inhaled medications: inhaled corticosteroids (ICS), long-acting Beta 2-agonist (LABA), long-acting muscarinic antagonist (LAMA). Single inhaled medication is usually replaced by combined inhaled medications for efficacy enhancement. However, this practice should be supported by clinical evidence for large-scale implementations. METHODS: The relative efficacy of inhaled medications is determined by three endpoints: changes in the trough forced expiratory volume in 1 second (tFEV1), changes in the St George's Respiratory Questionnaire (SGRQ) score and the proportion of SGRQ responders which represents a reduction in SGRQ total score at week 24 of ≥4...
March 27, 2017: Cellular Physiology and Biochemistry
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