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https://www.readbyqxmd.com/read/28434138/dynamic-epr-oximetry-of-changes-in-intracerebral-oxygen-tension-during-induced-thromboembolism
#1
Huagang Hou, Nadeem Khan, Sangeeta Gohain, Clifford J Eskey, Karen L Moodie, Kirk J Maurer, Harold M Swartz, Periannan Kuppusamy
Cerebral tissue oxygenation (oxygen tension, pO2) is a critical parameter that is closely linked to brain metabolism, function, and pathophysiology. In this work, we have used electron paramagnetic resonance oximetry with a deep-tissue multi-site oxygen-sensing probe, called implantable resonator, to monitor temporal changes in cerebral pO2 simultaneously at four sites in a rabbit model of ischemic stroke induced by embolic clot. The pO2 values in healthy brain were not significantly different among the four sites measured over a period of 4 weeks...
April 22, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28434092/cyberbullying-victimization-and-adolescent-mental-health-evidence-of-differential-effects-by-sex-and-mental-health-problem-type
#2
Soyeon Kim, Scott R Colwell, Anna Kata, Michael H Boyle, Katholiki Georgiades
The use of electronic communication technologies has become a core method for adolescent communication. While there are many benefits to such technologies, cyberbullying has emerged as a potential harm. This study examines the association between cyberbullying and adolescent mental health problems and the extent to which this association differs by sex and mental health problem type. A clustered sample of 31,148 students in grades 6-12 (Female = 51.9%; 56.5% Caucasian, 10.2% South Asian) completed an anonymous survey asking their frequency of exposure to traditional forms of bullying, cyberbullying, and experiences of mental health problems over the past 6 months...
April 22, 2017: Journal of Youth and Adolescence
https://www.readbyqxmd.com/read/28434085/exploring-the-oral-microflora-of-preschool-children
#3
Wen Ren, Qun Zhang, Xuenan Liu, Shuguo Zheng, Lili Ma, Feng Chen, Tao Xu, Baohua Xu
The oral cavity is one of the most important and complicated habitats in our body and supports diverse microbial communities. In this study, we aimed to determine the bacterial diversity and composition of various oral micro-niches. Samples were collected from supragingival plaque, saliva, and tongue coating from 10 preschool children (30 samples total). 16S rRNA gene pyrosequencing dataset generated 314,639 clean reads with an average of 10,488 ± 2,787 reads per sample. The phyla Firmicutes, Proteobacteria, Actinobacteria, Bacteroidetes, and Fusobacteria were predominant, accounting for more than 90% of the total sequences...
April 22, 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28434052/core-curriculum-illustration-orbital-blow-out-fracture
#4
M Mubashir Ramzan, Shaimaa Fadl, Ken F Linnau
This is the 32nd installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at: http://www.erad.org/page/CCIP_TOC.
April 22, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28433942/synthesis-and-characterization-of-poly-propylene-imine-dendrimer-grafted-gold-nanoparticles-as-nanocarriers-of-doxorubicin
#5
Marzieh Golshan, Mehdi Salami-Kalajahi, Mina Mirshekarpour, Hossein Roghani-Mamaqani, Maryam Mohammadi
The aim of current work is synthesis 4th-generation-poly(propylene imine) (PPI)-dendrimer modified gold nanoparticles (Au-G4A) as nanocarriers for doxorubicin (DOX) and studying in vitro drug release kinetics from nanocarriers into different media. Accordingly, AuNPs were synthesized by reduction of chloroauric acid (HAuCl4) aqueous solution with trisodium citrate and modified with cysteamine to obtain amine-functionalized (Au-NH2) nanoparticles. Au-NH2 nanoparticles were used as multifunctional cores and participated in Michael addition of acrylonitrile and reduction process by lithium aluminum hydride (LAH) to synthesize Au-G4A nanoparticles...
April 13, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28433936/sustained-viral-gene-delivery-from-a-micro-fibrous-elastomeric-cardiac-patch-to-the-ischemic-rat-heart
#6
Xinzhu Gu, Yasumoto Matsumura, Ying Tang, Souvik Roy, Richard Hoff, Bing Wang, William R Wagner
Biodegradable and elastomeric patches have been applied to the surface of infarcted hearts as temporary mechanical supports to effectively alter adverse left ventricular remodeling processes. In this report, recombinant adeno-associated virus (AAV), known for its persistent transgene expression and low pathogenicity, was incorporated into elastomeric polyester urethane urea (PEUU) and polyester ether urethane urea (PEEUU) and processed by electrospinning into two formats (solid fibers and core-sheath fibers) designed to influence the controlled release behavior...
April 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/28433889/quantitative-proteomic-profiling-for-clarification-of-the-crucial-roles-of-lysosomes-in-microbial-infections
#7
Benhong Xu, Yanpan Gao, Shaohua Zhan, Wei Ge
Lysosomes play vital roles in both innate and adaptive immunity. It is widely accepted that lysosomes do not function exclusively as a digestive organelle. It is also involved in the process of immune cells against pathogens. However, the changes in the lysosomal proteome caused by infection with various microbes are still largely unknown, and our understanding of the proteome of the purified lysosome is another obstacle that needs to be resolved. Here, we performed a proteomic study on lysosomes enriched from THP1 cells after infection with Listeria monocytogenes (L...
April 20, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28433847/is-it-reliable-to-predict-the-outcome-of-elderly-patients-with-severe-traumatic-brain-injury-using-impact-prognostic-calculator
#8
Xueyan Wan, Kai Zhao, Sheng Wang, Huaqiu Zhang, Liang Zeng, Yu Wang, Lin Han, Rajluxmee Beejadhursing, Kai Shu, Ting Lei
BACKGROUND: Many investigators endeavor to predict the outcome based on admission characteristics using some established models to determine which management should be applied. However, the efficacy and applicability of the models using in the geriatric severe traumatic brain injury (TBI) patients have not been evaluated yet. METHODS: 137 geriatric severe TBI patients were enrolled in this retrospective study. Receiver operating characteristics (ROC) curves were constructed to evaluate the efficacy and usability of the IMPACT prognostic model in evaluating the prognosis for these patients...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433791/employment-and-choice-making-for-adults-with-intellectual-disability-autism-and-down-syndrome
#9
Kelsey L Bush, Marc J Tassé
BACKGROUND: Adults with disabilities are employed at a significantly lower rate than adults without disabilities. Of adults with disabilities in the workforce, more individuals work in a facility setting rather than a community setting, despite efforts to improve community inclusion. Choice-making has been proposed as a predictive factor for employment for individuals with disabilities. AIMS: The purpose of this research was to examine the current state of employment for three groups of adults with intellectual disability (ID): individuals with autism spectrum disorder (ASD), individuals with Down syndrome (DS), and individuals with idiopathic ID...
April 20, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28433787/facile-encapsulation-of-hydroxycamptothecin-nanocrystals-into-zein-based-nanocomplexes-for-active-targeting-drug-delivery-and-cell-imaging
#10
Hongdi Wang, Wei Zhu, Yunna Huang, Zhixian Li, Yanbin Jiang, Qiuling Xie
Nano-drug delivery systems that integrate inorganic and organic or even bioactive components into a single nanoscale platform are playing a greatly important role in cancer treatment. Here, the fabrication of a versatile nanocarrier based on self-assembled structures of gold nanoparticles (AuNPs)-zein is reported, which displays high drug-loading efficiency for needle-shaped hydroxycamptothecin (HCPT) nanocrystals. The surface modification with folate-conjugated polydopamine (PFA) renders them stable and also facilitates their selective cellular internalization and enhancement of endocytosis...
April 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28433752/serotonergic-transmission-and-gap-junctional-coupling-in-proventricular-muscle-cells-in-the-american-cockroach-periplaneta-americana
#11
Ryoichi Yoshimura, Taeko Suetsugu, Yasuhisa Endo
The visceral muscle tissues of insects consist of striated muscle cells. The mechanisms responsible for delivering signals to the contractile muscles in the insect digestive tract remain unclear. We found that serotonergic nerves innervate the hemocoel surfaces of foregut and midgut muscles in the American cockroach. Electron microscopy of the neuromuscular junctions in the proventriculus (gizzard) revealed typical synaptic structures, the accumulation of large core/cored vesicles (neuropeptides) and small clear vesicle (neurotransmitter) at presynapses, and synaptic clefts...
April 19, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28433672/montreal-accord-on-patient-reported-outcomes-use-series-paper-1-introduction
#12
Susan J Bartlett, Sara Ahmed
BACKGROUND: Patient-centered healthcare, where we design and deliver care to address the needs and preferences of patients, represents an important paradigm shift. Patient reported outcomes (PROs) are critical to capture the patient voice, understand how illness and treatments affect people, and establish how well services and treatments address what matters most to patients. OBJECTIVE: Originally developed for use in research, PROs are now used to monitor individuals and populations, manage care, evaluate services and providers, and inform policy...
April 19, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28433513/ortho-group-activation-of-a-bromopyrrole-ester-in-suzuki-miyaura-cross-coupling-reactions-application-to-the-synthesis-of-new-microtubule-depolymerizing-agents-with-potent-cytotoxic-activities
#13
John T Gupton, Scott Yeudall, Nakul Telang, Megan Hoerrner, Ellis Huff, Evan Crawford, Katie Lounsbury, Michael Kimmel, William Curry, Andrew Harrison, Wen Juekun, Alex Shimozono, Joe Ortolani, Kristin Lescalleet, Jon Patteson, Veronica Moore-Stoll, Cristina C Rohena, Susan L Mooberry, Ahmad J Obaidullah, Glen E Kellogg, James A Sikorski
New microtubule depolymerizing agents with potent cytotoxic activities have been prepared with a 5-cyano or 5-oximino group attached to a pyrrole core. The utilization of ortho activation of a bromopyrrole ester to facilitate successful Suzuki-Miyaura cross-coupling reactions was a key aspect of the synthetic methodology. This strategy allows for control of regiochemistry with the attachment of four completely different groups at the 2, 3, 4 and 5 positions of the pyrrole scaffold. Biological evaluations and molecular modeling studies are reported for these examples...
April 11, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28433403/-public-health-competencies-and-contents-in-spanish-university-degree-programmes-of-veterinary-medicine
#14
María Del Carmen Davó-Blanes, Carmen Vives-Cases, Belén Huerta
OBJECTIVE: To reach a consensus among public health faculty from various Spanish universities about the core public health competencies that should be integrated into the Veterinary Medicine degree training. METHODS: The 3rd Forum of University Professors of Public Health was held at the School of Veterinary Medicine of the University of Cordoba (12-13 January 2016). Forty-two university professors and lecturers from nine Spanish universities with veterinary degrees participated in the forum...
April 19, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/28433029/early-stages-of-clathrin-aggregation-at-a-membrane-in-coarse-grained-simulations
#15
M Giani, W K den Otter, W J Briels
The self-assembly process of clathrin coated pits during endocytosis has been simulated by combining and extending coarse grained models of the clathrin triskelion, the adaptor protein AP2, and a flexible network membrane. The AP2's core, upon binding to membrane and cargo, releases a motif that can bind clathrin. In conditions where the core-membrane-cargo binding is weak, the binding of this motif to clathrin can result in a stable complex. We characterize the conditions and mechanisms resulting in the formation of clathrin lattices that curve the membrane, i...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28432973/methane-explosion-suppression-characteristics-based-on-the-nahco3-red-mud-composite-powders-with-core-shell-structure
#16
Yan Wang, Yi-Shen Cheng, Ming-Gao Yu, Yao Li, Jian-Liang Cao, Li-Gang Zheng, Hong-Wei Yi
The NaHCO3/red-mud (RM) composite powders were successfully prepared by the solvent-anti-solvent method for methane explosion suppression. The RM was used as a carrier, and the NaHCO3 was used as a loaded inhibitor. The NaHCO3/RM composite powders showed a special core-shell structure and excellent endothermic performance. The suppression properties of NaHCO3/RM composite for 9.5% CH4 explosion were tested in a 20L spherical explosion vessel and a 5L Perspex duct. The results showed that the NaHCO3/RM composite powders displayed a much better suppression property than the pure RM or NaHCO3 powders...
April 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28432957/nanoencapsulation-strategies-for-the-delivery-of-novel-bifunctional-antioxidant-%C3%AF-1-selective-ligands
#17
Claudia Carbone, Emanuela Arena, Veronica Pepe, Orazio Prezzavento, Ivana Cacciatore, Hasan Turkez, Agostino Marrazzo, Antonio Di Stefano, Giovanni Puglisi
Nowadays sigma-1 receptors are considered as new therapeutic objectives for central nervous system neurodegenerative diseases. Among different molecules, alpha lipoic acid has been identified as a natural potent antioxidant drug, whose therapeutic efficacy is limited by its many drawbacks, such as fast metabolism, poor bioavailability and high physico-chemical instability. Alfa-lipoic acid derivatives have been recently developed demonstrating their neuroprotective activity and effectiveness in different types of oxidative stress...
April 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28432925/structure-of-the-s1-subunit-c-terminal-domain-from-bat-derived-coronavirus-hku5-spike-protein
#18
Xue Han, Jianxun Qi, Hao Song, Qihui Wang, Yanfang Zhang, Ying Wu, Guangwen Lu, Kwok-Yung Yuen, Yi Shi, George F Gao
Accumulating evidence indicates that MERS-CoV originated from bat coronaviruses (BatCoVs). Previously, we demonstrated that both MERS-CoV and BatCoV HKU4 use CD26 as a receptor, but how the BatCoVs evolved to bind CD26 is an intriguing question. Here, we solved the crystal structure of the S1 subunit C-terminal domain of HKU5 (HKU5-CTD), another BatCoV that is phylogenetically related to MERS-CoV but cannot bind to CD26. We observed that the conserved core subdomain and those of other betacoronaviruses (betaCoVs) have a similar topology of the external subdomain, indicating the same ancestor of lineage C betaCoVs...
April 19, 2017: Virology
https://www.readbyqxmd.com/read/28432922/restricted-access-magnetic-core-mesoporous-shell-microspheres-with-c8-modified-interior-pore-walls-for-the-identification-of-20-s-protopanaxadiol-metabolites-in-rat-plasma-using-uplc-q-tof-ms-ms
#19
Jin Ling, Yingjia Yu, Jianan Feng, Changjiang Xu, Jiebing Jiang, Liping Wang, Jiakun Long, Yan Li, Gengli Duan
In the present study, a novel sample preparation method based on magnetic core-mesoporous shell microspheres with C8-modified interior pore walls (C8-Fe3O4@mSiO2) was established for the identification of 20(S)-protopanaxadiol (PPD) metabolites in rat plasma by UPLC-Q-TOF-MS/MS analysis. C8-Fe3O4@mSiO2 allowed selective extraction of PPD metabolites from rat plasma by excluding macromolecules in the plasma owing to size exclusion effect. Five extraction conditions including the amount of C8-Fe3O4@mSiO2 microspheres used, extraction time, elution solvents, elution volume, and elution time were investigated and optimized...
April 3, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28432913/spontaneously-formed-redox-and-ph-sensitive-polymersomes-by-mpeg-based-cytocompatible-random-copolymers
#20
Partha Laskar, Joykrishna Dey, Sudip Kumar Ghosh
Stimuli-sensitive polymersomes are one of the important vehicles and have been extensively studied as smart drug delivery system. Polymersomes have added advantage over the micelles because of having the ability to carry not only hydrophobic but also hydrophilic guest in their aqueous core. Among various stimuli, the change of pH and redox reaction is very important for drug delivery purpose especially for anticancer drug. Therefore, in this work, two poly(ethylene glycol) methyl ether methacrylate (mPEG) containing hydrophilic random anionic copolymers, poly[(2-hydroxyethyl methacrylate-3,3'-dithiodipropanoic acid)x-co-(poly(ethylene glycol) methyl ether methacrylate)y], poly[(HEMA-DTDPA)x-co-mPEGy] with different copolymer ratios were designed and synthesized...
April 12, 2017: Journal of Colloid and Interface Science
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