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https://www.readbyqxmd.com/read/28644869/status-of-chemistry-lab-safety-in-nepal
#1
Krishna Prasad Kandel, Bhanu Bhakta Neupane, Basant Giri
Chemistry labs can become a dangerous environment for students as the lab exercises involve hazardous chemicals, glassware, and equipment. Approximately one hundred thousand students take chemistry laboratory classes annually in Nepal. We conducted a survey on chemical lab safety issues across Nepal. In this paper, we assess the safety policy and equipment, protocols and procedures followed, and waste disposal in chemistry teaching labs. Significant population of the respondents believed that there is no monitoring of the lab safety in their lab (p<0...
2017: PloS One
https://www.readbyqxmd.com/read/28644614/role-of-the-protein-corona-derived-from-human-plasma-in-cellular-interactions-between-nanoporous-human-serum-albumin-particles-and-endothelial-cells
#2
Mikhail Valeryevich Zyuzin, Yan Yan, Raimo Hartmann, Katelyn T Gause, Moritz Nazarenus, Jiwei Cui, Frank Caruso, Wolfgang J Parak
The presence of a protein corona on various synthetic nanomaterials has been shown to strongly influence how they interact with cells. However, it is unclear if the protein corona also exists on protein particles, and if so, its role in particle-cell interactions. In this study, pure human serum albumin (HSA) particles were fabricated via mesoporous silica particle templating. Our data reveal that various serum proteins adsorbed on the particles. The presence of a corona from human plasma was shown to decrease particle binding to cell membrane, increase the residence time of particles in early endosomes, and reduce the amount of internalized particles within the first hours of cell exposure to particles...
June 23, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28644575/comparison-of-10-days-levofloxacin-bismuth-based-quadruple-therapy-and-levofloxacin-based-triple-therapy-for-helicobacter-pylori-therapy
#3
Tzung-Shiun Wu, Ping-I Hsu, Chao-Hung Kuo, Huang-Ming Hu, I-Chen Wu, Sophie S W Wang, Yen-Hsu Chen, Deng-Chyang Wu, Wei-Wen Su, Fu-Chen Kuo
BACKGROUND: This was a prospective study, the aid was to prove if levofloxacin plus Bismuth-based quadruple therapy was more effective than levofloxacin-based triple therapy after failure of first-line therapies. METHODS: We collected total of 67 patients, who was infected by H.pylori. Patients were enrolled and were randomly assigned to two groups; one was levofloxacin plus Bismuth-based quadruple therapy (RBAL group) (Rabeprazole 20 mg b.i.d., bismuth subcitrate 120 mg q...
June 23, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28644563/gas-phase-dissociation-study-of-erythrinian-alkaloids-by-electrospray-ionization-mass-spectrometry-and-computational-methods
#4
T Guaratini, L G P Feitosa, D B Silva, N P Lopes, J L C Lopes, R Vessecchi
Alkaloids from plants of the genus Erythrina display important biological activities, including anxiolytic action. Characterization of these alkaloids by mass spectrometry (MS) has contributed to the construction of a spectral library, has improved understanding of their structures, and has supported the proposal of fragmentation mechanisms in light of density functional calculations (DFT). In this study, we have used low- and high-resolution MS(n) analyses to investigate the fragmentation patterns of erythrinian alkaloids; we have employed the B3LYP/6-31+G(d,p) model to obtain their reactive sites...
June 23, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28643840/synchronization-of-excitable-cardiac-cultures-of-different-origin
#5
N N Agladze, O V Halaidych, V A Tsvelaya, T Bruegmann, C Kilgus, P Sasse, K I Agladze
In the present work, we investigated the synchronization of electrical activity in cultured cardiac cells of different origin put in direct contact. In the first set of experiments synchronization was studied in the primary culture cells of neonatal rats taken at different developmental ages, and in the second - in the neonatal rat cardiomyocytes and HL-1 cells. The electrical excitation of cells was recorded using the calcium transient marker Fluor-4. In the confluent cell layers created with the aid of a specially devised mask, the excitation waves and their propagation between areas occupied by cells of different origin were observed...
June 23, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28643605/novel-simulation-device-for-targeting-tumors-in-laparoscopic-ablation-a-learning-curve-study
#6
Zeljka Jutric, Jan Grendar, William L Brown, Maria A Cassera, Ronald F Wolf, Paul D Hansen, Chet W Hammill
INTRODUCTION: A novel 3-dimensional (3D) guidance system was developed to aid accurate needle placement during ablation. METHODS: Five novices and 5 experienced hepatobiliary surgeons were recruited. Using an agar block with analog tumor, participants targeted under 4 conditions: in-line with the ultrasound plane using ultrasound, in-line using 3D guidance, 45° off-axis using ultrasound, and off-axis using 3D guidance. Time to target the tumor, number of withdrawals, and the National Aeronautics and Space Administration Task Load Index were collected...
June 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28641913/a-five-year-review-of-paediatric-burns-and-social-deprivation-is-there-a-link
#7
Helen Richards, Maria Kokocinska, Darren Lewis
AIM: To establish if there is a correlation between burn incidence and social deprivation in order to formulate a more effective burns prevention strategy. METHODS: A quantitative retrospective review of International Burn Injury Database (IBID) was carried out over a period from 2006 to 2011 to obtain data for children referred to our burns centre in West Midlands. Social deprivation scores for geographical areas were obtained from Office of National Statistics (ONS)...
June 19, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28640930/orotracheal-intubation-in-infants-performed-with-a-stylet-versus-without-a-stylet
#8
REVIEW
Joyce E O'Shea, Jennifer O'Gorman, Aakriti Gupta, Sanjay Sinhal, Jann P Foster, Liam Af O'Connell, C Omar F Kamlin, Peter G Davis
BACKGROUND: Neonatal endotracheal intubation is a common and potentially life-saving intervention. It is a mandatory skill for neonatal trainees, but one that is difficult to master and maintain. Intubation opportunities for trainees are decreasing and success rates are subsequently falling. Use of a stylet may aid intubation and improve success. However, the potential for associated harm must be considered. OBJECTIVES: To compare the benefits and harms of neonatal orotracheal intubation with a stylet versus neonatal orotracheal intubation without a stylet...
June 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28640129/vacter-syndrome-with-situs-inversus-totalis-case-report-and-a-new-syndrome
#9
Wei Wu, Zhibao Lv, Weijue Xu, Jiangbing Liu, Wei Jia
INTRODUCTION: The association of situs inversus totalis (SIT) and VACTERL syndrome an extremely rare coincidence. PATIENTS: The patient was first diagnosed as simple SIT with lumbosacral neoplasms according to the prenatal magnetic resonance imaging (MRI) examination; however, the local hospital ignored the important to physical examination so that missed anal atresia with fistula. The patient was presented to our hospital owing to constipation for 1 week. And then, she was diagnosed as VACTER syndrome with situs inversus totalis...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639943/bioprintable-form-of-chitosan-hydrogel-for-bone-tissue-engineering
#10
T Tolga Demirtas, Gülseren Irmak, Menemse Gumusderelioglu
Bioprinting can be defined as the 3D patterning of living cells and other biologics by using a computer-aided layer-by-layer deposition approach. Presence of cells within the ink to usage of a "bio-ink" presents the potential to print of living tissues and organ analogs that can be implanted into damaged/diseased tissue to promote highly controlled cell-based regeneration. In this study, it was shown for the first time that chitosan solution and its composite with nanostructured bone-like hydroxyapatite (HA) can be mixed with cells and printed successfully...
June 22, 2017: Biofabrication
https://www.readbyqxmd.com/read/28639878/exploring-the-phenotype-in-mild-cognitive-impairment-to-aid-the-prediction-of-those-at-risk-of-transitioning-to-parkinson-disease-and-dementia-with-lewy-bodies
#11
Jennifer Y Y Szeto, Glenda M Halliday, Sharon L Naismith, Simon J G Lewis
To date, only limited research has concurrently investigated the presence of rapid eye movement sleep behavior disorder (RBD) and other features associated with Parkinson disease (PD) and dementia with Lewy bodies (DLB) in people presenting with mild cognitive impairment (MCI). As a first step towards a longitudinal research project, the present study explored the relationships between MCI, RBD, and depression in 108 older adults who presented with subjective memory complaints but were not known to have a neurodegenerative condition...
July 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28639519/knee-joint-kinetics-in-response-to-multiple-three-dimensional-printed-customised-foot-orthoses-for-the-treatment-of-medial-compartment-knee-osteoarthritis
#12
Richard Allan, James Woodburn, Scott Telfer, Mandy Abbott, Martijn Pm Steultjens
The knee adduction moment is consistently used as a surrogate measure of medial compartment loading. Foot orthoses are designed to reduce knee adduction moment via lateral wedging. The 'dose' of wedging required to optimally unload the affected compartment is unknown and variable between individuals. This study explores a personalised approach via three-dimensional printed foot orthotics to assess the biomechanical response when two design variables are altered: orthotic length and lateral wedging. Foot orthoses were created for 10 individuals with symptomatic medial knee osteoarthritis and 10 controls...
June 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28639499/hiv-and-aids-related-stigma-and-discrimination-in-two-referral-hospitals-in-ethiopia
#13
Befekadu S Wodajo, Gloria Thupayagale-Tshweneagae, Oluwaseyi A Akpor
The aim of the study was to determine the magnitude of HIV and AIDS-related stigma and discrimination (SAD) and its associated factors in healthcare settings. Primary data were collected from June to September 2014 from two referral hospitals located in north-west Ethiopia. The study used pre-test/post-test design with a non-equivalent control group using a quantitative approach. Healthcare professionals were divided into strata and then, using the stratified random sampling technique, the study participants were selected from each stratum...
June 22, 2017: African Journal of AIDS Research: AJAR
https://www.readbyqxmd.com/read/28639486/estimated-prevalence-of-the-target-population-for-brain-computer-interface-neurotechnology-in-the-netherlands
#14
Elmar G M Pels, Erik J Aarnoutse, Nick F Ramsey, Mariska J Vansteensel
BACKGROUND: People who suffer from paralysis have difficulties participating in society. Particularly burdensome is the locked-in syndrome (LIS). LIS patients are not able to move and speak but are cognitively healthy. They rely on assistive technology to interact with the world and may benefit from neurotechnological advances. Optimal research and design of such aids requires a well-defined target population. However, the LIS population is poorly characterized and the number of patients in this condition is unknown...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28639375/challenges-in-regenerating-the-diabetic-heart-a-comprehensive-review
#15
REVIEW
Venkata R Satthenapalli, Regis R Lamberts, Rajesh Katare
Stem cell therapy is one of the promising regenerative strategies developed to improve cardiac function in patients with ischemic heart diseases (IHD). However, this approach is limited in IHD patients with diabetes due to a progressive decline in the regenerative capacity of stem cells. This decline is mainly attributed to the metabolic memory incurred by diabetes on stem cell niche and their systemic cues. Understanding the molecular pathways involved in the diabetes-induced deterioration of stem cell function will be critical for developing new cardiac regeneration therapies...
June 22, 2017: Stem Cells
https://www.readbyqxmd.com/read/28639141/survival-of-an-aids-patient-after-infection-with-acanthamoeba-sp-of-the-central-nervous-system
#16
Hana El Sahly, Michelle Udayamurthy, George Parkerson, Rodrigo Hasbun
CASE DESCRIPTION: A 38-year-old man presented with headaches and generalized weakness. He was found to have AIDS; a ring-enhancing central nervous system lesion was found on brain imaging and he had elevated serum Toxoplasma gondii IgG levels. A diagnosis of presumptive toxoplasma encephalitis was made and he received antiretrovirals and antitoxoplasma therapy for 4 years. Intermittent headaches and evidence of disease progression on neuroimaging warranted further evaluation and cerebrospinal fluid analysis revealed amebic forms on hematoxylin and eosin staining and positive polymerase chain reaction testing for Acanthamoeba spp...
June 21, 2017: Infection
https://www.readbyqxmd.com/read/28638405/a-combined-one-class-svm-and-template-matching-approach-for-user-aided-human-fall-detection-by-means-of-floor-acoustic-features
#17
Diego Droghini, Daniele Ferretti, Emanuele Principi, Stefano Squartini, Francesco Piazza
The primary cause of injury-related death for the elders is represented by falls. The scientific community devoted them particular attention, since injuries can be limited by an early detection of the event. The solution proposed in this paper is based on a combined One-Class SVM (OCSVM) and template-matching classifier that discriminate human falls from nonfalls in a semisupervised framework. Acoustic signals are captured by means of a Floor Acoustic Sensor; then Mel-Frequency Cepstral Coefficients and Gaussian Mean Supervectors (GMSs) are extracted for the fall/nonfall discrimination...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28638377/a-novel-bromodomain-inhibitor-reverses-hiv-1-latency-through-specific-binding-with-brd4-to-promote-tat-and-p-tefb-association
#18
Huachao Huang, Shuai Liu, Maxime Jean, Sydney Simpson, He Huang, Mark Merkley, Tsuyoshi Hayashi, Weili Kong, Irene Rodríguez-Sánchez, Xiaofeng Zhang, Hailemichael O Yosief, Hongyu Miao, Jianwen Que, James J Kobie, James Bradner, Netty G Santoso, Wei Zhang, Jian Zhu
While combinatory antiretroviral therapy (cART) can effectively reduce HIV-1 viremia, it cannot eliminate HIV-1 infection. In the presence of cART, viral reservoirs remain latent, impeding the cure of HIV-1/AIDS. Recently, latency-reversing agents (LRAs) have been developed with the intent of purging latent HIV-1, providing an intriguing strategy for the eradication of the residual viral reservoirs. Our earlier studies show that the first-generation, methyl-triazolo bromodomain, and extra-terminal domain inhibitor (BETi), JQ1, facilitates the reversal of HIV-1 latency...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28637739/intrathecal-baclofen-therapy-in-paediatrics-a-study-protocol-for-an-australian-multicentre-10-year-prospective-audit
#19
Kirsty Stewart, Gavin Hutana, Megan Kentish
INTRODUCTION: Increasing clinical use of Intrathecal baclofen (ITB) in Australian tertiary paediatric hospitals, along with the need for standardised assessment and reporting of adverse events, saw the formation of the Australian Paediatric ITB Research Group (APIRG). APIRG developed a National ITB Audit tool designed to capture clinical outcomes and adverse events data for all Australian children and adolescents receiving ITB therapy. METHODS AND ANALYSIS: The Australian ITB Audit is a 10 year, longitudinal, prospective, clinical audit collecting all adverse events and assessment data across body functions and structure, participation and activity level domains of the ICF...
June 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28637156/the-sink-or-swim-hypothesis-a-roadmap-from-pathology-to-work-instability
#20
Bilal Akter Mateen, Catherine Doogan, Kate Hayward, Susan Hourihan, Joanne Hurford, E Diane Playford
PURPOSE: Selecting the most appropriate health-related work outcome to evaluate an intervention can be fraught with difficulty. To aid clinicians in navigating this problem we have developed a model, which illustrates how pathology can affect specific measureable quantities, such as work instability. METHODS: Using a modified-Delphi procedure, a panel of experts met initially to analyze the content of 95 health-related work outcome measures and organize the identified areas of measurement into a coherent model, complemented by a narrative review of the literature...
March 3, 2017: Disability and Rehabilitation
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