keyword
MENU ▼
Read by QxMD icon Read
search

R & d

keyword
https://www.readbyqxmd.com/read/29149772/natural-history-of-infantile-onset-spinal-muscular-atrophy
#1
Stephen J Kolb, Christopher S Coffey, Jon W Yankey, Kristin Krosschell, W David Arnold, Seward B Rutkove, Kathryn J Swoboda, Sandra P Reyna, Ai Sakonju, Basil T Darras, Richard Shell, Nancy Kuntz, Diana Castro, Julie Parsons, Anne M Connolly, Claudia A Chiriboga, Craig McDonald, W Bryan Burnette, Klaus Werner, Mathula Thangarajh, Perry B Shieh, Erika Finanger, Merit E Cudkowicz, Michelle M McGovern, D Elizabeth McNeil, Richard Finkel, Susan T Iannaccone, Edward Kaye, Allison Kingsley, Samantha R Renusch, Vicki L McGovern, Xueqian Wang, Phillip G Zaworski, Thomas W Prior, Arthur H M Burghes, Amy Bartlett, John T Kissel
OBJECTIVE: Infantile-onset spinal muscular atrophy (SMA) is the most common genetic cause of infant mortality, typically resulting in death prior to age 2. Clinical trials in this population require an understanding of disease progression and identification of meaningful biomarkers to hasten therapeutic development and predict outcomes. METHODS: A longitudinal, multi-center, prospective natural history study enrolled 26 SMA infants, and 27 control infants less than six months of age...
November 17, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/29149743/multigenerational-effects-of-salinity-in-six-clonal-lineages-of-daphnia-longispina
#2
C Venâncio, R Ribeiro, A M V M Soares, I Lopes
Sea level rise, as a consequence of climate changes, is already causing seawater intrusion in some freshwater coastal ecosystems worldwide. The increase in salinity at these freshwater coastal ecosystems may occur gradually (through groundwater) or abruptly (through extreme weather events). Moreover, many of them are also being altered and threatened by anthropogenic activities. Accordingly, the present study aimed at assessing the multigenerational lethal and sublethal effects caused by increased salinity in six clonal lineages of the freshwater cladoceran Daphnia longispina differing in their sensitivity to lethal levels of copper...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149706/exploring-the-impact-of-route-of-administration-on-medication-acceptance-in-hospitalized-patients-implications-for-venous-thromboembolism-prevention
#3
Victor O Popoola, Farrah Tavakoli, Brandyn D Lau, Matthew Lankiewicz, Patricia Ross, Peggy Kraus, Dauryne Shaffer, Deborah B Hobson, Jonathan K Aboagye, Norma A Farrow, Elliott R Haut, Michael B Streiff
BACKGROUND: Non-administration of venous thromboembolism (VTE) prophylaxis contributes to preventable patient harm. We hypothesized that non-administration would be more common for parenteral VTE prophylaxis than oral infectious disease or cardiac prophylaxis or for treatment medications. The primary study goal was to determine if non-administration of parenteral VTE prophylaxis is more frequent than other prophylactic or treatment medications. METHODS: In this retrospective cohort study of consecutive admissions we used descriptive statistics and risk ratios (RR) to compare the number of non-administered doses of VTE prophylaxis, oral infectious disease and cardiovascular prophylaxis and treatment medications...
October 21, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29149523/amniocentesis-is-still-the-best-option-for-advanced-genomic-testing-in-case-of-fetal-malformations
#4
M C de Wit, E M Bunnik, A T J I Go, I D de Beaufort, R M W Hofstra, E A P Steegers, R J H Galjaard
No abstract text is available yet for this article.
November 17, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29149479/cripsr-cas-expands-dynamic-range-of-gene-expression-from-t7rnap-promoters
#5
Sean R McCutcheon, Kwan Lun Chiu, Daniel D Lewis, Cheemeng Tan
BACKGROUND: Reducing leaky gene expression is critical for improving protein yield of recombinant bacteria and stability of engineered cellular circuits in synthetic biology. Leaky gene expression occurs when a genetic promoter is not fully repressed, leading to unintended protein synthesis in the absence of stimuli. Existing work has devised specific molecular strategies for reducing leaky gene expression of each promoter. Main Method and Results: In contrast, we describe a repurposed, modular CRISPRi system that attenuates leaky gene expression using a series of single-guide RNAs targeting the PT7/LacO1 ...
November 17, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29149327/focused-time-lapse-analysis-reveals-novel-aspects-of-human-fertilization-and-suggests-new-parameters-of-embryo-viability
#6
G Coticchio, M Mignini Renzini, P V Novara, M Lain, E De Ponti, D Turchi, R Fadini, M Dal Canto
STUDY QUESTION: Can focused application of time-lapse microscopy (TLM) lead to a more detailed map of the morphokinetics of human fertilization, revealing novel or neglected aspects of this process? SUMMARY ANSWER: Intensive harnessing of TLM reveals novel or previously poorly characterised phenomena of fertilization, such as a cytoplasmic wave (CW) preceding pronuclear formation and kinetics of pronuclear chromatin polarization, thereby suggesting novel non-invasive biomarkers of embryo quality...
November 15, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29149265/survey-of-reproductive-experiences-and-outcomes-of-cancer-survivors-who-stored-reproductive-material-before-treatment
#7
K Hammarberg, M Kirkman, C Stern, R I McLachlan, G Clarke, F Agresta, D Gook, L Rombauts, B Vollenhoven, J R W Fisher
No abstract text is available yet for this article.
November 15, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29149237/multimorbidity-among-persons-living-with-hiv-in-the-u-s
#8
Cherise Wong, Stephen J Gange, Richard D Moore, Amy C Justice, Kate Buchacz, Alison G Abraham, Peter F Rebeiro, John R Koethe, Jeffrey N Martin, Michael A Horberg, Cynthia M Boyd, Mari M Kitahata, Heidi M Crane, Kelly A Gebo, M John Gill, Michael J Silverberg, Frank J Palella, Pragna Patel, Hasina Samji, Jennifer Thorne, Charles S Rabkin, Angel Mayor, Keri N Althoff
Background: Age-associated conditions are increasingly common among persons living with HIV. A longitudinal investigation of their accrual is needed given their implications on clinical care complexity. We examined trends in the co-occurrence of age-associated conditions among persons living with HIV receiving clinical care, and differences in their prevalence by demographic subgroup. Methods: This cohort study was nested within the North American AIDS Cohort Collaboration on Research and Design...
November 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29149197/sieve-analysis-of-breakthrough-hiv-1-sequences-in-hvtn-505-identifies-vaccine-pressure-targeting-the-cd4-binding-site-of-env-gp120
#9
Allan C deCamp, Morgane Rolland, Paul T Edlefsen, Eric Sanders-Buell, Breana Hall, Craig A Magaret, Andrew J Fiore-Gartland, Michal Juraska, Lindsay N Carpp, Shelly T Karuna, Meera Bose, Steven LePore, Shana Miller, Annemarie O'Sullivan, Kultida Poltavee, Hongjun Bai, Kalpana Dommaraju, Hong Zhao, Kim Wong, Lennie Chen, Hasan Ahmed, Derrick Goodman, Matthew Z Tay, Raphael Gottardo, Richard A Koup, Robert Bailer, John R Mascola, Barney S Graham, Mario Roederer, Robert J O'Connell, Nelson L Michael, Merlin L Robb, Elizabeth Adams, Patricia D'Souza, James Kublin, Lawrence Corey, Daniel E Geraghty, Nicole Frahm, Georgia D Tomaras, M Juliana McElrath, Lisa Frenkel, Sheila Styrchak, Sodsai Tovanabutra, Magdalena E Sobieszczyk, Scott M Hammer, Jerome H Kim, James I Mullins, Peter B Gilbert
Although the HVTN 505 DNA/recombinant adenovirus type 5 vector HIV-1 vaccine trial showed no overall efficacy, analysis of breakthrough HIV-1 sequences in participants can help determine whether vaccine-induced immune responses impacted viruses that caused infection. We analyzed 480 HIV-1 genomes sampled from 27 vaccine and 20 placebo recipients and found that intra-host HIV-1 diversity was significantly lower in vaccine recipients (P ≤ 0.04, Q-values ≤ 0.09) in Gag, Pol, Vif and envelope glycoprotein gp120 (Env-gp120)...
2017: PloS One
https://www.readbyqxmd.com/read/29149191/resting-state-fmri-in-sleeping-infants-more-closely-resembles-adult-sleep-than-adult-wakefulness
#10
Anish Mitra, Abraham Z Snyder, Enzo Tagliazucchi, Helmut Laufs, Jed Elison, Robert W Emerson, Mark D Shen, Jason J Wolff, Kelly N Botteron, Stephen Dager, Annette M Estes, Alan Evans, Guido Gerig, Heather C Hazlett, Sarah J Paterson, Robert T Schultz, Martin A Styner, Lonnie Zwaigenbaum, Bradley L Schlaggar, Joseph Piven, John R Pruett, Marcus Raichle
Resting state functional magnetic resonance imaging (rs-fMRI) in infants enables important studies of functional brain organization early in human development. However, rs-fMRI in infants has universally been obtained during sleep to reduce participant motion artifact, raising the question of whether differences in functional organization between awake adults and sleeping infants that are commonly attributed to development may instead derive, at least in part, from sleep. This question is especially important as rs-fMRI differences in adult wake vs...
2017: PloS One
https://www.readbyqxmd.com/read/29149174/cystatin-b-cathepsin-l-and-d-related-to-surrogate-markers-for-cardiovascular-disease-in-children
#11
Magnus Dencker, Tina Tanha, Magnus K Karlsson, Per Wollmer, Lars B Andersen, Ola Thorsson
OBJECTIVE: This study investigated potential associations between novel biomarkers for cardiovascular disease and other surrogate markers for health. METHODS: Community sample of 170 (92 boys and 78 girls) children aged 8-11 years. Total fat mass (TBF) and abdominal fat (AFM) were measured by Dual-energy x-ray absorptiometry (DXA). Total body fat was also expressed as percentage of total body mass (BF%), and body fat distribution was calculated as AFM/TBF. Maximal oxygen uptake (VO2PEAK), systolic and diastolic blood pressure (SBP and DBP) and pulse pressure (PP) were measured...
2017: PloS One
https://www.readbyqxmd.com/read/29149105/lgr5-expression-is-regulated-by-egf-in-early-colorectal-adenomas-and-governs-egfr-inhibitor-sensitivity
#12
R G Morgan, E Mortensson, D N Legge, B Gupta, T J Collard, A Greenhough, A C Williams
BACKGROUND: LGR5 serves as a co-receptor for Wnt/β-catenin signalling and marks normal intestinal stem cells; however, its role in colorectal cancer (CRC) remains controversial. LGR5(+) cells are known to exist outside the stem cell niche during CRC progression, and the requirement for epidermal growth factor (EGF) signalling within early adenomas remains to be fully elucidated. METHODS: Epidermal growth factor and gefitinib treatments were performed in EGF-responsive LGR5(+) early adenoma RG/C2 cells...
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29149073/micronutrient-deficiencies-among-breastfeeding-infants-in-tanzania
#13
Alexandra L Bellows, Emily R Smith, Alfa Muhihi, Christina Briegleb, Ramadhani A Noor, Salum Mshamu, Christopher Sudfeld, Honorati Masanja, Wafaie W Fawzi
Infant mortality accounts for the majority of child deaths in Tanzania, and malnutrition is an important underlying cause. The objectives of this cross-sectional study were to describe the micronutrient status of infants in Tanzania and assess predictors of infant micronutrient deficiency. We analyzed serum vitamin D, vitamin B12, folate, and ferritin levels from 446 infants at two weeks of age, 408 infants at three months of age, and 427 mothers three months post-partum. We used log-Poisson regression to estimate relative risk of being deficient in vitamin D and vitamin B12 for infants in each age group...
November 17, 2017: Nutrients
https://www.readbyqxmd.com/read/29148985/subtyping-sub-saharan-esophageal-squamous-cell-carcinoma-by-comprehensive-molecular-analysis
#14
Wenjin Liu, Jeff M Snell, William R Jeck, Katherine A Hoadley, Matthew D Wilkerson, Joel S Parker, Nirali Patel, Yohannie B Mlombe, Gift Mulima, N George Liomba, Lindsey L Wolf, Carol G Shores, Satish Gopal, Norman E Sharpless
No abstract text is available yet for this article.
November 16, 2017: JCI Insight
https://www.readbyqxmd.com/read/29148888/tissue-residue-levels-after-immobilization-of-rocky-mountain-elk-cervus-elaphus-nelsoni-using-a-combination-of-nalbuphine-medetomidine-and-azaperone-antagonized-with-naltrexone-atipamezole-and-tolazoline
#15
Lisa L Wolfe, Pauline Nol, Matthew P McCollum, Travis Mays, Morgan E Wehtje, William R Lance, Mark C Fisher, Michael W Miller
Previous studies demonstrated that nalbuphine, medetomidine, and azaperone (NalMed-A) can effectively immobilize adult elk (Cervus elaphus nelsoni), and be antagonized using naltrexone and atipamezole, with or without tolazoline. To assess duration of tissue residues for this immobilization package, we immobilized 14 captive adult elk with NalMed-A, then euthanized animals and collected tissues 0, 3, 6, 14, 21, or 28 d later. Except for two animals euthanized immediately, all elk were recovered using naltrexone, atipamezole, and tolazoline...
November 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29148886/an-experimental-study-of-the-effects-of-chemically-dispersed-oil-on-feather-structure-and-waterproofing-in-common-murres-uria-aalge
#16
Emily R Whitmer, Becky A Elias, Danielle J Harvey, Michael H Ziccardi
Following an oil spill in the marine environment, chemical dispersants, which increase oil droplet formation and distribution into the water column, are assumed to provide a net benefit to seabirds by reducing the risk of exposure to oil on the water surface. However, few data are available regarding acute, external impacts of exposure to dispersed oil. We evaluated the effects of known concentrations of dispersant and crude oil in artificial seawater on live Common Murres (Uria aalge). Waterproofing and microscopic feather geometry were evaluated over time and compared to pre-exposure values...
November 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29148781/compound-stability-in-nano-particles-the-effect-of-solid-phase-fraction-on-diffusion-of-degradation-agents-into-nanostructured-lipid-carriers
#17
Daniel D Nelson, Yuanjie Pan, Rohan V Tikekar, Nily R Dan, N Nitin
The stability of active compounds encapsulated in nanoparticles depends on the resistance of the particles to diffusion of environmental degradation agents. In this paper, off-lattice Monte Carlo simulations are used to investigate a suspension of nanostructured lipid carriers (NLC) composed of interspaced liquid and solid lipid domains, immersed in a solution containing molecules representing oxidative or other degradation agents. The simulations examine the diffusion of the degradation agents into the nanoparticles as a function of nanoparticle size, solid domain fraction, and domain size...
November 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29148769/azetidine-and-piperidine-carbamates-as-efficient-covalent-inhibitors-of-monoacylglycerol-lipase
#18
Christopher R Butler, Elizabeth M Beck, Anthony R Harris, Zhen Huang, Laura A McAllister, Christopher W Am Ende, Kimberly F Fennell, Timothy L Foley, Kari R Fonseca, Steven J Hawrylik, Douglas S Johnson, John D Knafels, Scot Mente, Stephen Noell, Jayvardhan Pandit, Tracy B Phillips, Justin R Piro, Bruce N Rogers, Tarek A Samad, Jane Wang, Shuangyi Wan, Michael A Brodney
Monoacylglycerol lipase (MAGL) is the main enzyme responsible for degradation of the endocannabinoid 2-arachidonoylglycerol (2-AG) in the CNS. MAGL catalyzes the conversion of 2-AG to arachidonic acid (AA), a precursor to the pro-inflammatory eicosannoids such as prostaglandins. Herein we describe highly efficient MAGL inhibitors, identified through a parallel medicinal chemistry approach that highlighted the improved efficiency of azetidine and piperidine-derived carbamates. The discovery and optimization of 3-substituted azetidine carbamate irreversible inhibitors of MAGL was aided by the generation of inhibitor-bound MAGL crystal structures...
November 17, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29148524/comparison-of-endothelial-cell-loss-and-complications-following-dmek-with-the-use-of-three-different-graft-injectors
#19
K Droutsas, A Lazaridis, G D Kymionis, K Chatzistefanou, M M Moschos, C Koutsandrea, W Sekundo
PurposeTo compare endothelial cell loss and complications following Descemet membrane endothelial keratoplasty (DMEK) with use of three commercially available injectors.MethodsFrom 179 consecutive DMEK procedures, 66 cases with uncomplicated graft preparation and completed 12-month follow-up were included in this retrospective study. According to the injector used, 3 groups were formed: group 1 (D.O.R.C. injector, n=16), group 2 (Geuder injector, n=24), and group 3 (Pasteur laboratory pipette, n= 26). Endothelial cell density (ECD) and endothelial cell loss were evaluated preoperatively and at 3, 6 and 12 months postoperatively; surgery-related complications were recorded...
November 17, 2017: Eye
https://www.readbyqxmd.com/read/29148373/mycobacterium-ulcerans-dna-in-bandicoot-excreta-in-buruli-ulcer-endemic-area-northern-queensland-australia
#20
Katharina Röltgen, Gerd Pluschke, Paul D R Johnson, Janet Fyfe
To identify potential reservoirs/vectors of Mycobacterium ulcerans in northern Queensland, Australia, we analyzed environmental samples collected from the Daintree River catchment area, to which Buruli ulcer is endemic, and adjacent coastal lowlands by species-specific PCR. We detected M. ulcerans DNA in soil, mosquitoes, and excreta of bandicoots, which are small terrestrial marsupials.
December 2017: Emerging Infectious Diseases
keyword
keyword
118921
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"