keyword
MENU ▼
Read by QxMD icon Read
search

Pre

keyword
https://www.readbyqxmd.com/read/28738651/recent-advances-in-sample-pre-treatment-for-emerging-methods-in-proteomic-analysis
#1
María Ramos-Payán, Juan A Ocaña-González, Rut M Fernández-Torres, Santiago Maspoch, Miguel Ángel Bello-López
The objective of proteomics is the study of proteins (including their structure elucidation, the characterization of their role in biochemical process, the detection and identification of anomalous modifications in their structures and behavior, etc.) from both a qualitative and quantitative point of view. These studies have to face several difficulties as (a) the intrinsic complexity of protein molecules, (b) the low concentrations of the studied proteins, (c) the complexity of the biological samples (which could lead to interferences from the components of these matrixes), etc...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738643/facile-preparation-of-3-d-floor-like-ordered-mesoporous-carbon-functionalized-graphene-composites-and-its-application-for-selective-enrichment-of-n-glycans-from-human-serum
#2
Quanqing Zhang, Yuanyu Huang, Haofan Sun, Yangyang Gan, Huali Shen, Bin Jia, Pengyuan Yang
Novel 3-D floor-like ordered mesoporous carbon functionalized graphene composites, FLOMC-GO, with high graphitized carbon contents were successfully synthesized using a soft template method. The one-pot sol-gel method was employed to prepare the silica soft template. Then, the sandwich-like composites were further combined together to form a 3-D structure through pre-carbonization and carbonization. During these procedures, the sulphonyl and sulfide bridges were formed by cross-linking processes to connect the phenyl rings...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738607/novel-colorimetric-assay-for-paraquat-detection-on-silica-bead-using-negatively-charged-silver-nanoparticles
#3
Weena Siangproh, Thachkorn Somboonsuk, Orawan Chailapakul, Kriangsak Songsrirote
A simple, rapid, sensitive, and economical method based on colorimetry for the determination of paraquat, a widely used herbicide, was developed. Citrate-coated silver nanoparticles (AgNPs) were synthesized as the colorimetric probe. The mechanism of the assay is related to the aggregation of negatively charged AgNPs as induced by positively-charged paraquat resulting from coulombic attraction which causes the color to change from a deep greenish yellow to pale yellow in accordance with the concentrations of paraquat...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738601/biosensor-assisted-selection-of-optimal-parameters-for-designing-molecularly-imprinted-polymers-selective-to-phosmet-insecticide
#4
Nadin Aftim, Georges Istamboulié, Elena Piletska, Sergey Piletsky, Carole Calas-Blanchard, Thierry Noguer
Molecularly imprinted polymers (MIPs) for phosmet insecticide were synthesized by batch polymerization. The affinity of functional monomers to phosmet was tested using an original method involving an electrochemical biosensor based on acetylcholinesterase inhibition. It was demonstrated that association of phosmet with appropriate functional monomers resulted in a decrease of enzyme inhibition. Using this method, it was shown that N,N-methylenebis(acrylamide) displayed the highest interactions with phosmet using DMSO as solvent...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738582/metaboqc-a-tool-for-correcting-untargeted-metabolomics-data-with-mass-spectrometry-detection-using-quality-controls
#5
Mónica Calderón-Santiago, María A López-Bascón, Ángela Peralbo-Molina, Feliciano Priego-Capote
Nowadays most metabolomic studies involve the analysis of large sets of samples to find a representative metabolite pattern associated to the factor under study. During a sequence of analyses the instrument signals can be subjected to the influence of experimental variability sources. Implementation of quality control (QC) samples to check the contribution of experimental variability is the most common approach in metabolomics. This practice is based on the filtration of molecular entities experiencing a variation coefficient higher than that measured in the QC data set...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738567/application-of-thermoresponsive-hydrogel-gold-nanorods-composites-in-the-detection-of-diquat
#6
Caiyun Jiang, Xiaoyuan Ma, Maoyun Xue, Hong-Zhen Lian
Gallic acid (GA) was employed as a reducing agent for facile in situ preparation of gold nanorods (GNRs) in thermoresponsive P(NIPAM-NVP) hydrogel films. Based on the surface-enhanced Raman scattering (SERS) effect of GNRs and the enrichment effect of thermoresponsive hydrogel film on test molecules through a shrinkage process, the obtained P(NIPAM-NVP)/GNRs composites have been used as SERS substrate for the rapid detection of diquat. The influences of substrate pre-treatment, laser wavelength, and sample treatment method on diquat determination have been investigated comprehensively...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738538/diosmin-improved-cognitive-deficit-and-amplified-brain-electrical-activity-in-the-rat-model-of-traumatic-brain-injury
#7
Mohammad Ali Mirshekar, Hamed Fanaei, Fereshteh Keikhaei, Fatemeh Sargolzaee Javan
OBJECTIVE: Traumatic brain injury (TBI) is one of the main causes of intellectual and cognitive disabilities in humans. Clinically, it is essential to limit the progress of cognitive impairment after TBI. It is reported that diosmin has a neuroprotective effect that can limit the progress of the impairment. The aim of this study was to evaluate the effects of diosmin on neurological score, memory, tumor necrosis factor-α (TNF-α) level and long-term potentiation in hippocampal dentate gyrus after the injury...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738395/outcomes-of-preoperative-and-postoperative-corticosteroid-therapies-in-myasthenia-gravis
#8
Yun Jing, Xinxin Liu, Lei Yu, Ran Li
AIMS: To compare the long-term outcomes of non-thymomatous myasthenia gravis (MG) patients receiving pre-thymectomy (Pre-CS) or post-thymectomy corticosteroid (Post-CS) therapy. METHODS: In a retrospective cohort study, 41 patients with MG were treated with Pre-CS therapy, and 110 were treated with Post-CS therapy. RESULTS: In the MG cohorts, 9 of 40 patients (22.5%) in the Pre-CS group vs. 28 of 105 patients (26.7%) in the Post-CS group achieved a complete remission (CR) at 1 year, 29...
July 24, 2017: European Neurology
https://www.readbyqxmd.com/read/28738386/exercise-capacity-impairment-can-predict-postoperative-pulmonary-complications-after-liver-transplantation
#9
Clarissa Bentes de Araújo Magalhães, Ingrid Correia Nogueira, Liegina Silveira Marinho, Elizabeth F Daher, José Huygens P Garcia, Cyntia F G Viana, Pedro Felipe Carvalhedo de Bruin, Eanes Delgado Barros Pereira
BACKGROUND: Postoperative respiratory complications (PRCs) are common after liver transplantation (LT) and contribute significantly to the related morbidity and mortality. OBJECTIVE: The aim of this paper was to determine the incidence of PRCs after LT and the value of simple exercise capacity measures as independent predictors of PRCs. METHODS: We conducted a prospective cohort study of consecutive adults submitted to LT at a University Hospital in Fortaleza Brazil from March 2013 to March 2015...
July 22, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28738338/cognitive-impairment-is-reflected-by-an-increased-difference-between-real-and-imagined-timed-up-and-go-test-performance
#10
Stefanie Rüdiger, Tim Stuckenschneider, Tobias Vogt, Vera Abeln, Brian Lawlor, Marcel Olde Rikkert, Stefan Schneider
BACKGROUND: Recent research suggests using an imaginary version of the Timed Up and Go test (TUG) for a first assessment of cognitive impairment. By using the time difference between a real (TUGr) and an imagined (TUGi) TUG task, the objective of this study was to examine the effect of cognitive impairment on motor imagery ability. METHODS: Fifty-two participants (mean age 69.3 ± 4.0 years) with mild cognitive impairment or subjective cognitive impairment were included in this study...
July 22, 2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/28738269/an-anti-inflammatory-effect-of-red-microalga-polysaccharides-in-coronary-artery-endothelial-cells
#11
Oshrat Levy-Ontman, Mahmoud Huleihel, Rachel Hamias, Talya Wolak, Esther Paran
BACKGROUND AND AIMS: Polysaccharides (PSs) produced by the red microalga Porphyridium sp. were reported to exhibit anti-inflammatory bioactivities in the human skin. The primary goal of the present research was to assess whether PSs attenuate inflammatory processes by interfering with tumour necrosis factor-alpha (TNF-α)-induced inflammation, in human coronary artery endothelial cells (HCAECs). METHODS: Functional and inflammatory markers were quantified in TNF-α-stimulated HCAECs, with and without pre-treatment with PSs...
July 16, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28738231/sliding-strip-microfluidic-device-enables-elisa-on-paper
#12
Mohit S Verma, Maria-Nefeli Tsaloglou, Tyler Sisley, Dionysios Christodouleas, Austin Chen, Jonathan Milette, George M Whitesides
This article describes a 3D microfluidic paper-based analytical device that can be used to conduct an enzyme-linked immunosorbent assay (ELISA). The device comprises two parts: a sliding strip (which contains the active sensing area) and a structure surrounding the sliding strip (which holds stored reagents-buffers, antibodies, and enzymatic substrate-and distributes fluid). Running an ELISA involves adding sample (e.g. blood) and water, moving the sliding strip at scheduled times, and analyzing the resulting color in the sensing area visually or using a flatbed scanner...
July 19, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28738223/engineering-resistance-against-viroids
#13
REVIEW
Ricardo Flores, Beatriz Navarro, Natalia Kovalskaya, Rosemarie W Hammond, Francesco Di Serio
Viroids, the smallest infectious agents endowed with autonomous replication, are tiny single-stranded circular RNAs (∼250 to 400nt) without protein-coding ability that, despite their simplicity, infect and often cause disease in herbaceous and woody plants of economic relevance. To mitigate the resulting losses, several strategies have been developed, the most effective of which include: firstly, search for naturally resistant cultivars and breeding for resistance, secondly, induced resistance by pre-infection with mild strains, thirdly, ribonucleases targeting double-stranded RNAs and catalytic antibodies endowed with intrinsic ribonuclease activity, fourthly, antisense, and sense, RNAs, fifthly, catalytic antisense RNAs derived from hammerhead ribozymes, and sixthly, hairpin RNAs and artificial small RNAs for RNA interference...
July 21, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28738098/somatization-disorder-and-somatoform-symptoms-in-systematically-studied-survivors-of-10-disasters
#14
Gus Zhang, Carol S North
BACKGROUND: There is little agreement about the association of somatization with exposure to disaster trauma in the existing literature. METHODS: Pre-disaster and post-disaster psychiatric disorders, somatization disorder, and individual somatoform (medically unexplained) symptoms were assessed with structured diagnostic interviews in 811 directly exposed survivors of 10 disasters. RESULTS: Only 1 individual met criteria for post-disaster somatization disorder; there were no incident cases...
August 1, 2017: Annals of Clinical Psychiatry: Official Journal of the American Academy of Clinical Psychiatrists
https://www.readbyqxmd.com/read/28738061/magnetic-resonance-imaging-and-tensor-based-morphometry-in-the-mptp-non-human-primate-model-of-parkinson-s-disease
#15
Michel Modo, William R Crum, Madeline Gerwig, Anthony C Vernon, Priya Patel, Michael J Jackson, Sarah Rose, Peter Jenner, Mahmoud M Iravani
Parkinson's disease (PD) is the second most common neurodegenerative disorder producing a variety of motor and cognitive deficits with the causes remaining largely unknown. The gradual loss of the nigrostriatal pathway is currently considered the pivotal pathological event. To better understand the progression of PD and improve treatment management, defining the disease on a structural basis and expanding brain analysis to extra-nigral structures is indispensable. The anatomical complexity and the presence of neuromelanin, make the use of non-human primates an essential element in developing putative imaging biomarkers of PD...
2017: PloS One
https://www.readbyqxmd.com/read/28738032/nurse-administered-hand-massage-integration-into-an-infusion-suite-s-standard-of-care%C3%A2
#16
Caitlin M Braithwaite, Deborah Ringdahl
BACKGROUND: Nurse-delivered hand massage is a safe and effective intervention that has potential for positively affecting nursing and patient outcomes.
. OBJECTIVES: Nurses in a National Cancer Institute-designated academic health center outpatient chemotherapy infusion suite were taught how to administer a hand massage to strengthen the nurse-patient relationship and improve patient experience, comfort, satisfaction, stress, and anxiety.
. METHODS: A pre-/postimplementation group comparison design was used...
August 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28738029/confronting-compassion-fatigue-assessment-and-intervention-in-inpatient-oncology%C3%A2
#17
Lisa M Zajac, Katherine J Moran, Carla J Groh
BACKGROUND: A notable variation among patient satisfaction scores with nursing care was identified. Contributing factors were examined and revealed significant negative correlations between the unit death rate and surviving patients' satisfaction scores. Compassion fatigue (CF) was hypothesized to be a major contributing factor.
. OBJECTIVES: The objective was to address CF in RNs and oncology care associates (assistive personnel) by developing an intervention to provide bereavement support to staff after patient deaths...
August 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28737998/examination-of-the-patient-focused-impact-of-cancer-telegenetics-among-a-rural-population-comparison-with-traditional-in-person-services
#18
Nan M Solomons, Amanda E Lamb, Frances L Lucas, Eileen F McDonald, Susan Miesfeldt
BACKGROUND: Telecommunication models promise to improve access to cancer genetic counseling. Little is known about their impact among the geographically underserved. This work examined knowledge and emotional outcomes and attitudes/beliefs regarding cancer telegenetic services (via live-interactive videoconferencing) in Maine. MATERIALS AND METHODS: Cancer telegenetic patients seen at two remote sites and control (in-person) patients responded to pre-/postsurveys assessing care impact on hereditary breast and ovarian cancer (HBOC) knowledge and emotional health, ease of access to services, and telegenetics satisfaction/acceptability...
July 21, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28737985/evaluation-of-patient-migration-patterns-and-related-health-care-costs-within-a-national-medicare-advantage-prescription-drug-plan-after-implementation-of-an-oxycodone-hcl-extended-release-access-restriction
#19
Chi-Chang Chen, Ajita P De, Brian Sweet, Rolin L Wade
BACKGROUND: Health plans use formulary restrictions (e.g., prior authorization, step therapy, tier change, nonformulary status) in an effort to control cost and promote quality, safety, and appropriate prescription utilization. Some Medicare payers perceive that the inclusion of certain agents, such as branded oxycodone HCl extended-release tablets (OERs), on their formularies is associated with attracting high-cost members to the plan. OBJECTIVE: To evaluate disenrollment rates, patient migration, and subsequent health care costs among OER users who disenrolled from a national Medicare Advantage Prescription Drug plan (study-MAPD) in the plan year following OER nonformulary restriction...
August 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28737971/fluticasone-furoate-vilanterol-and-lung-function-decline-in-patients-with-moderate-copd-and-heightened-cardiovascular-risk
#20
Peter M A Calverley, Julie A Anderson, Robert D Brook, Courtney Crim, Natacha Gallot, Sally Kilbride, Fernando Martinez, Julie Yates, David E Newby, Jørgen Vestbo, Robert Wise, Bartolome R Celli
RATIONALE: Many patients with chronic obstructive pulmonary disease (COPD) have an accelerated loss of lung function. It is unclear whether drug treatment can modify this in moderately severe disease. OBJECTIVES: In a pre-specified analysis of the key secondary outcome in the Study to Understand Mortality and MorbidITy (SUMMIT), we investigated whether the inhaled corticosteroid fluticasone furoate 100 μg (FF), the long-acting beta-agonist vilanterol 25 µg (VI) or the combination (FF/VI) modified the rate of decline in FEV1 compared with placebo...
July 24, 2017: American Journal of Respiratory and Critical Care Medicine
keyword
keyword
12511
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"