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https://www.readbyqxmd.com/read/29031234/proposal-of-a-new-radiological-classification-system-for-spinal-meningiomas-as-a-descriptive-tool-and-surgical-guide
#1
Ahmed B Bayoumi, Yosef Laviv, Burhan Yokus, Ibrahim E Efe, Zafer Orkun Toktas, Turker Kilic, Mustafa K Demir, Deniz Konya, Ekkehard M Kasper
OBJECTIVES: 1) To provide neurosurgeons and radiologists with a new quantitative and anatomical method to describe spinal meningiomas (SM) consistently. 2) To provide a guide to the surgical approach needed and amount of bony resection required based on the proposed classification. 3) To report the distribution of our 58 cases of SM over different Stages and Subtypes in correlation to the surgical treatment needed for each case. 4) To briefly review the literature on the rare non-conventional surgical corridors to resect SM...
October 3, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29031225/cube-shaped-theranostic-paclitaxel-prodrug-nanocrystals-with-surface-functionalization-of-spc-and-mpeg-dspe-for-imaging-and-chemotherapy
#2
Fuqiang Guo, Jiajia Shang, Hai Zhao, Kangrong Lai, Yang Li, Zhongxiong Fan, Zhenqing Hou, Guanghao Su
As one of nanomedicine delivery systems (NDSs), drug nanocrystals exhibited an excellent anticancer effect. Recently, differences of internalization mechanisms and subcellular localization of both drug nanocrystals and small molecular free drug have drawn much attention. In this paper, paclitaxel (PTX) as a model anticancer drug was directly labeled with 4-chloro-7-nitro-1, 2, 3-benzoxadiazole (NBD-Cl) (a drug-fluorophore conjugate Ma et al. (2016) and Wang et al. (2016) [1,2] (PTX-NBD)). PTX-NBD was synthesized by nucleophilic substitution reaction of PTX with NBD-Cl in high yield and characterized by fluorescence, XRD, ESI-MS, and FT-IR analysis...
October 5, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29031221/effects-of-particulate-matter-from-straw-burning-on-lung-fibrosis-in-mice
#3
Yang Hu, Liu-Sheng Wang, Yan Li, Qiu-Hong Li, Chun-Lin Li, Jian-Min Chen, Dong Weng, Hui-Ping Li
OBJECTIVE: To investigate the impacts of particulate matter 2.5 (PM2.5) from straw burning on the acute exacerbation of lung fibrosis in mice and the preventive effects of N-acetylcysteine (NAC). METHODS: The composition, particle size, and 30-min concentration change in an exposure system of the PM2.5 from straw-burning were determined. Forty C57BL male mice were equally randomized to two groups: bleomycin (BLM)-induced lung fibrosis with an exposure to air (BLM+air) and BLM+PM2...
October 7, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29031203/local-anaesthetic-pain-relief-therapy-in-vitro-and-in-vivo-evaluation-of-a-nanotechnological-formulation-co-loaded-with-ropivacaine-and-dexamethasone
#4
Yongxin Zhang, Yaocun Yue, Meng Chang
Combination therapy is frequently applied to anesthesia and analgesia for its benefits, which includes prolonged analgesia following peripheral nerve blockade, and reduced side effects. The aim of this study was to develop chitosan (CH) coated poly(ε-caprolactone) (PCL) nanoparticles to co-deliver ropivacaine (RPV) and dexamethasone (DEM) (RPV/DEM CH-PCL NPs) for the prolongation of anesthesia and pain relief. In the present study, RPV/DEM CH-PCL NPs were fabricated. The properties of CH-PCL NPs were evaluated for their particle sizes, zeta potential, drug loading capacity and in vitro drug release profile...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29031198/tretinoin-loaded-lipid-core-nanocapsules-overcome-the-triple-negative-breast-cancer-cell-resistance-to-tretinoin-and-show-synergistic-effect-on-cytotoxicity-induced-by-doxorubicin-and-5-fluororacil
#5
Eduarda Schultze, Julieti Buss, Karine Coradini, Karine Rech Begnini, Silvia S Guterres, Tiago Collares, Ruy Carlos Ruver Beck, Adriana R Pohlmann, Fabiana Kömmling Seixas
Nanostructured drug delivery systems have been extensively studied, mainly for applications in cancer therapy. The advantages of these materials include protection against drug degradation and improvement in both the relative solubility of poorly water soluble drugs as in targeting of therapy, due to the enhanced permeability and retention effect on tumor sites. In this work, we evaluate the antitumor activity of tretinoin-loaded lipid core nanocapsules (TT-LNC) in a tretinoin-resistant breast cancer cell-line, MDA-MB- 231, as well as the synergistic effect of combination of this treatment with 5-FU or DOXO...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29031196/anti-edematogenic-and-anti-inflammatory-activity-of-the-essential-oil-from-croton-rhamnifolioides-leaves-and-its-major-constituent-1-8-cineole-eucalyptol
#6
Anita Oliveira Brito Pereira Bezerra Martins, Lindaiane Bezerra Rodrigues, Francisco Rafael Alves Santana Cesário, Maria Rayane Correia de Oliveira, Cicera Datiane Morais Tintino, Fyama Ferreira E Castro, Isabel Sousa Alcântara, Maria Neyze Martins Fernandes, Thaís Rodrigues de Albuquerque, Maria Sanadia Alexandre da Silva, Adriano Antunes de Sousa Araújo, Lucindo José Quintans Júniur, José Galberto Martins da Costa, Irwin Rose Alencar de Menezes, Almir Gonçalves Wanderley
The species Croton rhamnifolioides, belonging to the Croton genus, is known in ethnomedicine as "quebra faca" and is used in the treatment of stomach pain, vomiting and fever. This study aims to evaluate the anti-edematogenic and anti-inflammatory effect of Croton rhamnifolioides leaf essential oil (OEFC) and its major constituent: 1,8-cineole (eucalyptol). The essential oil was extracted from fresh leaves through a hydrodistillation system. The chemical analysis was determined by gas chromatography-mass spectrometry (GC-MS)...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29031192/growth-and-endocrine-function-in-children-with-dravet-syndrome
#7
Krista Eschbach, Sharon Scarbro, Elizabeth Juarez-Colunga, Victoria Allen, Stephanie Hsu, Kelly Knupp
PURPOSE: Dravet syndrome is an intractable childhood epilepsy syndrome most often associated with an SCN1A mutation. In our clinical practice, several patients with Dravet syndrome were noted to have short stature and endocrine dysfunction. This has not been reported in the literature. Our study aim was to describe growth measurements and endocrine abnormalities in children with Dravet syndrome. METHOD: A retrospective chart review was performed at a single institution...
September 29, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29031188/azithromycin-sorption-and-biodegradation-in-a-simulated-california-river-system
#8
Monica L Vermillion Maier, Ronald S Tjeerdema
Azithromycin (AZ) is a widely-used macrolide antibiotic that is continually deposited into natural waterways by sewage effluent. Though recognized as an emerging contaminant of concern, little is known about its fate and transport in aquatic systems. American River soils and water were used to determine degradation of AZ in microcosms simulating flooded (anaerobic) and non-flooded (aerobic) California watershed conditions. Under aerobic conditions the degradation rate constant (k=0.0084 ± 0.0039 day(-1)) and DT50 (82...
October 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/29031187/modelling-transitions-in-urban-water-systems
#9
W Rauch, C Urich, P M Bach, B C Rogers, F J de Haan, R R Brown, M Mair, D T McCarthy, M Kleidorfer, R Sitzenfrei, A Deletic
Long term planning of urban water infrastructure requires acknowledgement that transitions in the water system are driven by changes in the urban environment, as well as societal dynamics. Inherent to the complexity of these underlying processes is that the dynamics of a system's evolution cannot be explained by linear cause-effect relationships and cannot be predicted under narrow sets of assumptions. Planning therefore needs to consider the functional behaviour and performance of integrated flexible infrastructure systems under a wide range of future conditions...
September 22, 2017: Water Research
https://www.readbyqxmd.com/read/29031180/design-of-silk-proteins-with-increased-heme-binding-capacity-and-fabrication-of-silk-heme-materials
#10
Trevor D Rapson, Jian-Wei Liu, Alagacone Sriskantha, Mustafa Musameh, Christopher J Dunn, Jeffrey S Church, Andrea Woodhead, Andrew C Warden, Mark J Riley, Jeffrey R Harmer, Christopher J Noble, Tara D Sutherland
In our previous studies, heme was bound into honeybee silk to generate materials that could function as nitric oxide sensors or as recoverable heterogeneous biocatalysts. In this study, we sought to increase the heme-binding capacity of the silk protein by firstly redesigning the heme binding site to contain histidine as the coordinating residue and secondly, by adding multiple histidine residues within the core of the coiled coil core region of the modified silk protein. We used detergent and a protein denaturant to confirm the importance of the helical structure of the silk for heme coordination...
September 4, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29031159/development-of-fingermarks-on-latex-gloves-the-solution-to-a-challenging-surface
#11
Tomer Arbeli, Yakir Liptz, Ravell Bengiat, Michal Levin-Elad
Used Latex gloves found at crime scenes can provide strong evidence against a suspect as they almost certainly contain both the fingermarks and DNA of the perpetrator who had worn them. However, over the years, Latex gloves have proved to be a rather difficult substrate for fingermarks development, with most of the standard techniques producing poor results. In this study, the two main protocols for development on either porous or non-porous surfaces: Ninhydrin-HFE and superglue fuming followed by crystal violet (CV) dyeing, respectively, had been examined on 100 disposable Latex gloves from twenty five donors...
September 28, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29031156/hiv-misdiagnosis-a-root-cause-analysis-leading-to-improvements-in-hiv-diagnosis-and-patient-care
#12
Raynell Lang, Carmen Charlton, Brenda Beckthold, Kiana Kadivar, Stephanie Lavoie, Doug Caswell, Paul Levett, Greg Horsman, John Kim, M John Gill
BACKGROUND: Standard diagnostic testing for HIV infection has traditionally relied on a high sensitivity HIV antibody screening test using an enzyme-linked immunosorbent assay (ELISA) followed by a high specificity antibody confirmatory test such as a Western Blot. Recently several of the screening assays have been enhanced with an ability to identify p24 antigen thereby narrowing the diagnostic window. OBJECTIVES: To explore the implications of enhanced HIV screening methods that may be leading to HIV misdiagnoses...
October 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29031154/thermally-stable-microemulsions-comprising-imidazolium-based-surface-active-ionic-liquids-non-polar-ionic-liquid-and-ethylene-glycol-as-polar-phase
#13
Manvir Kaur, Gurbir Singh, Sandeep Kumar, Navnidhi, Tejwant Singh Kang
Ionic liquid (IL), 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, [C2mim] [Tf2N], as a non-polar phase in conjunction with polar ethylene glycol (EG) forms microemulsions stabilized by surface active ionic liquids (SAILs), N-methyl-N-alkylimidazolium chlorides, [Cnmim] [Cl], where n = 8, 12 and 16 in conjunction with decanol as co-surfactant. The phase behaviour of the ternary systems has been investigated and three regions of microemulsions - polar-in-ionic liquid, bicontinuous and ionic liquid-in-polar, have been identified using electrical conductivity measurements...
October 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29031135/shared-agenda-making-for-quality-improvement-towards-more-synergy-in-maternity-care
#14
Carola J M Groenen, Noortje T L van Duijnhoven, Jan A M Kremer, Marisja Scheerhagen, Frank P H A Vandenbussche, Marjan J Faber
OBJECTIVES: Professionals in maternity care have started working in a network approach. To further enhance the efficacy of this multidisciplinary maternity network, the identification of priorities for improvement is warranted. The aim of this study was to create key recommendations for the improvement agenda, in co-production with patients and professionals. STUDY DESIGN: We conducted a Delphi study to inventory (round 1), prioritize (round 2) and eventually approve (round 3) the improvement agenda for the maternity network...
October 7, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29031134/the-positive-relationships-between-plant-coverage-species-richness-and-aboveground-biomass-are-ubiquitous-across-plant-growth-forms-in-semi-steppe-rangelands
#15
Anvar Sanaei, Arshad Ali, Mohammad Ali Zare Chahouki
The positive relationships between biodiversity and aboveground biomass are important for biodiversity conservation and greater ecosystem functioning and services that humans depend on. However, the interaction effects of plant coverage and biodiversity on aboveground biomass across plant growth forms (shrubs, forbs and grasses) in natural rangelands are poorly studied. Here, we hypothesized that, while accounting for environmental factors and disturbance intensities, the positive relationships between plant coverage, biodiversity, and aboveground biomass are ubiquitous across plant growth forms in natural rangelands...
October 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29031123/electric-field-standing-wave-effects-in-internal-reflection-and-atr-spectroscopy
#16
Thomas G Mayerhöfer, Jürgen Popp
We investigate electric field standing wave effects in the system semiinfinite incidence medium with high index of refraction/layer/vacuum, the latter being the semiinfinite exit medium. If the layer has a lower index of refraction than the incidence medium, then very strong resonances occur between the two critical angles of the system defined by the systems incidence medium/layer and incidence medium/vacuum, as the layer is then a cavity. In particular close to the lower critical angles, the evanescent fields extend strongly into the exit medium...
October 4, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29031113/cross-sectional-and-longitudinal-small-animal-pet-shows-pre-and-post-synaptic-striatal-dopaminergic-deficits-in-an-animal-model-of-hiv
#17
Sanhita Sinharay, Dianne Lee, Swati Shah, Siva Muthusamy, Georgios Z Papadakis, Xiang Zhang, Dragan Maric, William C Reid, Dima A Hammoud
INTRODUCTION: In vivo imaging biomarkers of various HIV neuropathologies, including dopaminergic dysfunction, are still lacking. Towards developing dopaminergic biomarkers of brain involvement in HIV, we assessed the pre and postsynaptic components of the dopaminergic system in the HIV-1 transgenic rat (Tg), a well-characterized model of treated HIV+ patients, using small-animal PET imaging. METHODS: Fifteen to 18 month-old Tg and wild type (WT) rats were imaged with both [18F]-FP-CMT, a dopamine transporter (DAT) ligand (n=16), and [18F]-Fallypride, a D2/D3 dopamine receptor (D2/D3DR) ligand (n=16)...
August 31, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29031102/identifying-the-loss-of-functional-independence-of-older-people-residing-in-the-community-validation-of-the-prisma-7-instrument-in-brazil
#18
Ana Luiza Flores Saenger, Célia Pereira Caldas, Michel Raîche, Luciana Branco da Motta
The identification of the older people who are functionally dependant is essential for planning interventions with emphasis on secondary and tertiary prevention. Therefore, a simplified tool, able to identify these individuals for a more comprehensive evaluation, is required. However, the use of a measuring tool in a different socio-cultural context requires prior adaptation. This article aims to verify the psychometric properties of the PRISMA-7 in Brazilian context. This instrument was previously shown as able to identify older persons living in the community who have risk of functional loss in a Canadian study...
October 7, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/29031099/shear-wave-elastography-for-characterization-of-breast-lesions-shearlet-transform-and-local-binary-pattern-histogram-techniques
#19
U Rajendra Acharya, Wei Lin Ng, Kartini Rahmat, Vidya K Sudarshan, Joel E W Koh, Jen Hong Tan, Yuki Hagiwara, Arkadiusz Gertych, Farhana Fadzli, Chai Hong Yeong, Kwan Hoong Ng
Shear wave elastography (SWE) examination using ultrasound elastography (USE) is a popular imaging procedure for obtaining elasticity information of breast lesions. Elasticity parameters obtained through SWE can be used as biomarkers that can distinguish malignant breast lesions from benign ones. Furthermore, the elasticity parameters extracted from SWE can speed up the diagnosis and possibly reduce human errors. In this paper, Shearlet transform and local binary pattern histograms (LBPH) are proposed as an original algorithm to differentiate malignant and benign breast lesions...
October 2, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29031098/stepwise-construction-of-a-metabolic-network-in-event-b-the-heat-shock-response
#20
Usman Sanwal, Luigia Petre, Ion Petre
There is a high interest in constructing large, detailed computational models for biological processes. This is often done by putting together existing submodels and adding to them extra details/knowledge. The result of such approaches is usually a model that can only answer questions on a very specific level of detail, and thus, ultimately, is of limited use. We focus instead on an approach to systematically add details to a model, with formal verification of its consistency at each step. In this way, one obtains a set of reusable models, at different levels of abstraction, to be used for different purposes depending on the question to address...
September 30, 2017: Computers in Biology and Medicine
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