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https://www.readbyqxmd.com/read/28110506/antibiotic-discovery-throughout-the-small-world-initiative-a-molecular-strategy-to-identify-biosynthetic-gene-clusters-involved-in-antagonistic-activity
#1
Elizabeth Davis, Tyler Sloan, Krista Aurelius, Angela Barbour, Elijah Bodey, Brigette Clark, Celeste Dennis, Rachel Drown, Megan Fleming, Allison Humbert, Elizabeth Glasgo, Trent Kerns, Kelly Lingro, MacKenzie McMillin, Aaron Meyer, Breanna Pope, April Stalevicz, Brittney Steffen, Austin Steindl, Carolyn Williams, Carmen Wimberley, Robert Zenas, Kristen Butela, Hans Wildschutte
The emergence of bacterial pathogens resistant to all known antibiotics is a global health crisis. Adding to this problem is that major pharmaceutical companies have shifted away from antibiotic discovery due to low profitability. As a result, the pipeline of new antibiotics is essentially dry and many bacteria now resist the effects of most commonly used drugs. To address this global health concern, citizen science through the Small World Initiative (SWI) was formed in 2012. As part of SWI, students isolate bacteria from their local environments, characterize the strains, and assay for antibiotic production...
January 22, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28110480/casubtype-an-r-package-to-identify-gene-sets-predictive-of-cancer-subtypes-and-clinical-outcomes
#2
Hualei Kong, Pan Tong, Xiaodong Zhao, Jielin Sun, Hua Li
In the past decade, molecular classification of cancer has gained high popularity owing to its high predictive power on clinical outcomes as compared with traditional methods commonly used in clinical practice. In particular, using gene expression profiles, recent studies have successfully identified a number of gene sets for the delineation of cancer subtypes that are associated with distinct prognosis. However, identification of such gene sets remains a laborious task due to the lack of tools with flexibility, integration and ease of use...
January 21, 2017: Interdisciplinary Sciences, Computational Life Sciences
https://www.readbyqxmd.com/read/28110440/molecular-characterization-of-echinococcus-granulosus-isolates-from-bulgarian-human-cystic-echinococcosis-patients
#3
Irina Marinova, Markus Spiliotis, Junhua Wang, Marin Muhtarov, Ilias Chaligiannis, Smaro Sotiraki, Iskra Rainova, Bruno Gottstein, Ghalia Boubaker
Although cystic echinococcosis (CE) is highly endemic in Bulgaria, there is still scarce information about species and/or genotypes of the Echinococcus granulosus complex that infect humans. Our study tackled the genetic diversity of E. granulosus complex in a cohort of 30 Bulgarian CE patients. Ten animal E. granulosus isolates from neighboring Greece were additionally included. Specimens were comparatively analyzed for partial sequences of five mitochondrial (mt) (cox I, nad I, rrnS, rrnL, and atp6) and three nuclear (nc) genes (act II, hbx 2, and ef-1α) using a PCR-sequencing approach...
January 21, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28110382/economic-evaluations-alongside-efficient-study-designs-using-large-observational-datasets-the-pleasant-trial-case-study
#4
Matthew Franklin, Sarah Davis, Michelle Horspool, Wei Sun Kua, Steven Julious
BACKGROUND: Large observational datasets such as Clinical Practice Research Datalink (CPRD) provide opportunities to conduct clinical studies and economic evaluations with efficient designs. OBJECTIVES: Our objectives were to report the economic evaluation methodology for a cluster randomised controlled trial (RCT) of a UK NHS-delivered public health intervention for children with asthma that was evaluated using CPRD and describe the impact of this methodology on results...
January 21, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28110356/predicting-conversion-to-glaucoma-using-standard-automated-perimetry-and-frequency-doubling-technology
#5
Genichiro Takahashi, Shaban Demirel, Chris A Johnson
PURPOSE: To test the hypothesis that development of glaucomatous visual fields can be predicted several years earlier from prior visual field information. METHODS: One-hundred and seven eyes with glaucomatous optic neuropathy (n = 47 eyes) or which were suspicious for glaucoma (n = 60) were prospectively enrolled in a longitudinal study. Visual fields were evaluated on an annual basis using standard automated perimetry (SAP), the original version of frequency doubling technology (FDT) perimetry, and a custom version of FDT that used the 24-2 stimulus pattern...
January 21, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28110245/bipartite-network-analysis-reveals-metabolic-gene-expression-profiles-that-are-highly-associated-with-the-clinical-outcomes-of-acute-myeloid-leukemia
#6
Fanfan Xie, Mingxiong He, Li He, Keqin Liu, Menglong Li, Guoquan Hu, Zhining Wen
Dysregulated and reprogrammed metabolism are one of the most important characteristics of cancer, and exploiting cancer cell metabolism can aid in understanding the diverse clinical outcomes for patients. To investigate the differences in metabolic pathways among patients with acute myeloid leukemia (AML) and differential survival outcomes, we systematically conducted microarray data analysis of the metabolic gene expression profiles from 384 patients available from the Gene Expression Omnibus and Cancer Genome Atlas databases...
January 6, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28110102/transcriptional-profiling-reveals-protective-mechanisms-in-brains-of-long-lived-mice
#7
Christiane Frahm, Akash Srivastava, Silvio Schmidt, Jule Mueller, Marco Groth, Madlen Guenther, Yuanyuan Ji, Steffen Priebe, Matthias Platzer, Otto W Witte
The brain plays a central role in organismal aging but is itself most sensitive to aging-related functional impairments and pathologies. Insights into processes underlying brain aging are the basis to positively impact brain health. Using high-throughput RNA sequencing and quantitative polymerase chain reaction (PCR), we monitored cerebral gene expression in mice throughout their whole lifespan (2, 9, 15, 24, and 30 months). Differentially expressed genes were clustered in 6 characteristic temporal expression profiles, 3 of which revealed a distinct change between 24 and 30 months, the period when most mice die...
December 27, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/28110090/spatiotemporal-reconstruction-of-auditory-steady-state-responses-to-acoustic-amplitude-modulations-potential-sources-beyond-the-auditory-pathway
#8
Ehsan Darestani Farahani, Tine Goossens, Jan Wouters, Astrid van Wieringen
Investigating the neural generators of auditory steady-state responses (ASSRs), i.e., auditory evoked brain responses, with a wide range of screening and diagnostic applications, has been the focus of various studies for many years. Most of these studies employed a priori assumptions regarding the number and location of neural generators. The aim of this study is to reconstruct ASSR sources with minimal assumptions in order to gain in-depth insight into the number and location of brain regions that are activated in response to low- as well as high-frequency acoustically amplitude modulated signals...
January 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28110021/the-application-of-crispr-technology-to-high-content-screening-in-primary-neurons
#9
Ben L Callif, Brian Maunze, Nick L Krueger, Matthew T Simpson, Murray G Blackmore
Axon growth is coordinated by multiple interacting proteins that remain incompletely characterized. High content screening (HCS), in which manipulation of candidate genes is combined with rapid image analysis of phenotypic effects, has emerged as a powerful technique to identify key regulators of axon outgrowth. Here we explore the utility of a genome editing approach referred to as CRISPR (Clustered Regularly Interspersed Palindromic Repeats) for knockout screening in primary neurons. In the CRISPR approach a DNA-cleaving Cas enzyme is guided to genomic target sequences by user-created guide RNA (sgRNA), where it initiates a double-stranded break that ultimately results in frameshift mutation and loss of protein production...
January 18, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28110016/spatial-characteristics-of-urinary-btex-concentrations-in-the-general-population
#10
Xanthi Tsangari, Xanthi D Andrianou, Agapios Agapiou, Pawel Mochalski, Konstantinos C Makris
Benzene, toluene, ethylbenzene, o-, m-, and p-xylenes (BTEX) are ubiquitous outdoor and indoor air pollutants associated with both environmental and health effects. The objective of this exploratory study was to determine the magnitude and variability of urinary BTEX levels among residents of two areas located in the same city (Nicosia, Cyprus). The two areas differed with respect to their proximity to an industrial cluster and an intercity-highway. First morning urine voids were collected during a random campaign from selected households in the two urban areas (n = 48)...
January 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28109990/ictal-eeg-fmri-study-of-vertiginous-seizures
#11
Alessandra Morano, Marco Carnì, Sara Casciato, Anna Elisabetta Vaudano, Jinane Fattouch, Martina Fanella, Mariarita Albini, Luca Manfredi Basili, Giulia Lucignani, Marco Scapeccia, Regina Tomassi, Elisabetta Di Castro, Claudio Colonnese, Anna Teresa Giallonardo, Carlo Di Bonaventura
Vertigo and dizziness are extremely common complaints, related to either peripheral or central nervous system disorders. Among the latter, epilepsy has to be taken into consideration: indeed, vertigo may be part of the initial aura of a focal epileptic seizure in association with other signs/symptoms, or represent the only ictal manifestation, a rare phenomenon known as "vertiginous" or "vestibular" seizure. These ictal symptoms are usually related to a discharge arising from/involving temporal or parietal areas, which are supposed to be a crucial component of the so-called "vestibular cortex"...
January 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28109971/optimal-systolic-blood-pressure-target-after-sprint-insights-from-a-network-meta-analysis-of-randomized-trials
#12
Sripal Bangalore, Bora Toklu, Eugenia Gianos, Arthur Schwartzbard, Howard Weintraub, Gbenga Ogedegbe, Franz H Messerli
BACKGROUND: The optimal blood pressure (BP) target has been a matter of debate. The recent SPRINT trial showed significant benefits of a BP target of <120 mm Hg albeit with an increase in serious adverse effects related to low BP. METHODS: PUBMED, EMBASE, and CENTRAL were searched for randomized trials comparing treating to different BP targets. Trial arms were grouped into five systolic BP target categories: 1) <160 mm Hg; 2) <150 mm Hg; 3) <140 mm Hg; 4) <130 mm Hg and 5) <120 mm Hg...
January 18, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28109959/crispr-cas9-mediated-genome-editing-as-a-therapeutic-approach-for-leber-congenital-amaurosis-10
#13
Guo-Xiang Ruan, Elizabeth Barry, Dan Yu, Michael Lukason, Seng H Cheng, Abraham Scaria
As the most common subtype of Leber congenital amaurosis (LCA), LCA10 is a severe retinal dystrophy caused by mutations in the CEP290 gene. The most frequent mutation found in patients with LCA10 is a deep intronic mutation in CEP290 that generates a cryptic splice donor site. The large size of the CEP290 gene prevents its use in adeno-associated virus (AAV)-mediated gene augmentation therapy. Here, we show that targeted genomic deletion using the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system represents a promising therapeutic approach for the treatment of patients with LCA10 bearing the CEP290 splice mutation...
January 18, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28109936/precision-phenotyping-in-heart-failure-and-pattern-clustering-of-ultrasound-data-for-the-assessment-of-diastolic-dysfunction
#14
Alaa Mabrouk Salem Omar, Sukrit Narula, Mohamed Ahmed Abdel Rahman, Gianni Pedrizzetti, Hala Raslan, Osama Rifaie, Jagat Narula, Partho P Sengupta
OBJECTIVES: The aim of this study was to investigate whether cluster analysis of left atrial and left ventricular (LV) mechanical deformation parameters provide sufficient information for Doppler-independent assessment of LV diastolic function. BACKGROUND: Medical imaging produces substantial phenotyping data, and superior computational analyses could allow automated classification of repetitive patterns into patient groups with similar behavior. METHODS: The authors performed a cluster analysis and developed a model of LV diastolic function from an initial exploratory cohort of 130 patients that was subsequently tested in a prospective cohort of 44 patients undergoing cardiac catheterization...
January 11, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28109865/a-survey-of-membrane-receptor-regulation-in-valvular-interstitial-cells-cultured-under-mechanical-stresses
#15
Mir S Ali, Xinmei Wang, Carla M R Lacerda
Degenerative valvular diseases have been linked to the action of abnormal forces on valve tissues during each cardiac cycle. It is now accepted that the degenerative behavior of valvular cells can be induced mechanically in vitro. This approach of in vitro modeling of valvular cells in culture constitutes a powerful tool to study, characterize, and develop predictors of heart valve degeneration in vivo. Using such in vitro systems, we expect to determine the exact signaling mechanisms that trigger and mediate propagation of degenerative signals...
January 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28109798/adverse-events-associated-with-surgical-antibiotic-prophylaxis-for-outpatient-circumcisions-at-us-children-s-hospitals
#16
Katherine H Chan, Benjamin M Whittam, Elizabeth A S Moser, Mark P Cain, William E Bennett
INTRODUCTION: Doctors often use surgical antibiotic prophylaxis (SAP) despite limited evidence to support its efficacy. We sought to determine the association between SAP in children undergoing circumcision and the rate of perioperative adverse events. MATERIAL AND METHODS: We performed a retrospective study of males >30 days old and <18 years old who underwent circumcision from 2004 to 2014 using the Pediatric Health Information System database. We excluded inpatients and those with any concomitant procedures...
November 22, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28109728/the-utility-of-hair-cortisol-concentrations-in-the-prediction-of-ptsd-symptoms-following-traumatic-physical-injury
#17
Maria L Pacella, Bryce Hruska, Susann Steudte-Schmiedgen, Richard L George, Douglas L Delahanty
RATIONALE: Although cortisol alterations have been associated with posttraumatic stress disorder (PTSD) and PTSD symptoms (PTSS), the direction of association is mixed. Cortisol which is measured in blood, saliva, or urine is subject to transient factors that may confound results. Recent advances in cortisol sampling techniques provide novel opportunities to address these inconsistencies. Hair cortisol sampling is a non-invasive method for the retrospective assessment of long-term integrated cortisol, yet its utility at predicting PTSS has not been assessed in acute injury victims...
January 6, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28109707/potential-risk-of-repeated-nasal-vaccination-that-induces-allergic-reaction-with-mucosal-ige-and-airway-eosinophilic-infiltration-in-cynomolgus-macaques-infected-with-h5n1-highly-pathogenic-avian-influenza-virus
#18
Misako Nakayama, Yasushi Itoh, Shintaro Shichinohe, Rumi Nakabayashi, Hirohito Ishigaki, Yoshihiro Sakoda, Quynh Mai Le, Yoshihiro Kawaoka, Hiroshi Kida, Kazumasa Ogasawara
The efficacy and detrimental effect of mucosal vaccination with an inactivated influenza vaccine were examined in a macaque model by intranasal administration with small amounts of inactivated whole virus particles and challenge by a human-derived H5N1 highly pathogenic avian influenza virus infection. Repeated nasal inoculation with the whole particle vaccine of an inactivated virus, A/duck/Hokkaido/Vac-3/2007 (H5N1) (Vac-3), induced antigen-specific IgA and IgG antibody production in nasal swabs and plasma...
January 18, 2017: Vaccine
https://www.readbyqxmd.com/read/28109661/mapping-sites-of-high-tb-transmission-risk-integrating-the-shared-air-and-social-behaviour-of-tb-cases-and-adolescents-in-a-south-african-township
#19
Benjamin Patterson, Carl D Morrow, Daniel Kohls, Caroline Deignan, Samuel Ginsburg, Robin Wood
BACKGROUND: Tuberculosis remains a major public health problem in poverty-stricken areas of the world. Communal gathering places account for the majority of TB transmission in high burden settings. OBJECTIVE: To investigate the social behaviour patterns of individuals who have developed TB disease and adolescents at risk of infection. To develop a cheap and effective method to locate transmission hot spots in high burden communities. DESIGN: Portable, combined CO2/GIS monitors and location diaries were given to individuals from a South African township...
January 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28109561/lithium-reverses-behavioral-and-axonal-transport-related-changes-associated-with-ank3-bipolar-disorder-gene-disruption
#20
Michael G Gottschalk, Melanie P Leussis, Tillmann Ruland, Klaudio Gjeluci, Tracey L Petryshen, Sabine Bahn
Ankyrin 3 (ANK3) has been implicated as a genetic risk factor for bipolar disorder (BD), however the resulting pathophysiological and treatment implications remain elusive. In a preclinical systems biological approach, we aimed to characterize the behavioral and proteomic effects of Ank3 haploinsufficiency and chronic mood-stabilizer treatment in mice. Psychiatric-related behavior was evaluated with the novelty-suppressed feeding (NSF) paradigm, elevated plus maze (EPM) and a passive avoidance task (PAT). Tandem mass spectrometry (MS(E)) was employed for hippocampal proteome profiling...
January 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
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