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https://www.readbyqxmd.com/read/29778041/the-efficacy-of-vitamin-d-in-multiple-sclerosis-a-meta-analysis
#1
REVIEW
Chao Zheng, Liang He, Lingling Liu, Jie Zhu, Tao Jin
BACKGROUND: Multiple sclerosis (MS) is a chronic inflammatory demyelination disorder in the central nervous system (CNS) leading to a high level of neurological disability. The pathogenesis of MS remains largely unknown, which explains the lack of significant efficacy of therapy in MS. Vitamin D deficiency is widely considered to be an environmental risk factor for MS. Many studies investigating the therapeutic effects of vitamin D on MS have been applied. The objective of this systematic review and meta-analysis was to evaluate the effectiveness of vitamin D in MS patients...
May 12, 2018: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29777955/perspectives-and-limitations-for-nucleo-t-side-analogs-in-future-hbv-therapies
#2
REVIEW
Massimo Levrero, Miroslava Subic, Francois Villeret, Fabien Zoulim
The latest generation of nucleo(t)side analogs (NAs) provide robust virus suppression with high barrier to resistance. Long term NAs treatment is associated with a partial restoration in HBV-specific T-cell functions, regression of fibrosis, no disease progression and a reduction of HCC risk but rarely lead to cure and life-long treatments is often required. New insights into the hepatitis B viral life cycle and the host immune response have expanded the potential targets for drug therapies with interesting antiviral candidates and novel immunotherapeutic approaches in early stage development...
May 16, 2018: Current Opinion in Virology
https://www.readbyqxmd.com/read/29777917/a-methodology-for-expanding-the-use-of-nai-tl-based-spectrometry-in-environmental-radioactivity-measurements
#3
M Pilakouta, F K Pappa, D L Patiris, C Tsabaris, C A Kalfas
A methodology that extends the usability of low and medium resolution γ-ray detectors to a wide range of energies that appear in environmental radioactivity measurements is described. Results of the implementation of the methodology in the analysis of 20 granite samples measured with a (3″ × 3″) NaI(Tl) are presented. A comparison with the activity results obtained by a high-resolution detector (HPGe) for two samples was found in good agreement, within the uncertainties, validating the results of the proposed method...
April 25, 2018: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29777850/a-novel-cardiovascular-prosthesis-made-from-woven-ultra-high-molecular-weight-polyethylene-fibers-proof-of-concept-in-a-sheep-model
#4
Amir Basir, Mylène Loncq de Jong, Aryan Vink, Gerard Pasterkamp, Paul Gründeman, Frans Moll, Joost van Herwaarden
BACKGROUND: A patch, made of woven ultra-high molecular weight polyethylene (UHMWPE) fibers is thin, strong, and flexible, and may be attractive for use in cardiovascular prostheses. This study assessed the hemocompatibility of this patch in a sheep model. METHODS: The UHMWPE patches were sutured in the right carotid artery and jugular vein in 12 adult sheep, and in the same animal, expanded polytetrafluoroethylene (ePTFE) patches were sutured as control patches in the left carotid artery and jugular vein...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29777839/-mesenteric-steal-physiology-as-a-cause-of-claudication-and-chronic-mesenteric-ischemia
#5
Aleem K Mirza, J Michael Bacharach
Aortoiliac occlusive disease (AOID) results in varying degrees of pelvic and lower extremity arterial insufficiency. Treatment approach has evolved and endovascular therapies are being successfully reported for high-grade lesion. However, Trans Atlantic Inter-Society Consensus (TASC) D often necessitates open revascularization. Disease limited to the infrarenal segment does not typically affect intestinal perfusion in the absence of visceral aortic or mesenteric vessel involvement. Chronic mesenteric ischemia most commonly occurs due to atherosclerotic disease of two or three of the mesenteric vessels...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29777832/novel-cysteine-and-albumin-adduct-biomarkers-to-prove-human-poisoning-with-the-pesticide-oxydemeton-s-methyl
#6
Harald John, Markus Siegert, Florian Eyer, Franz Worek, Horst Thiermann, Andreas Kranawetvogl
We herein report on the forensic analysis of plasma samples to prove human poisoning with oxydemeton-S-methyl (ODM), S-(2-(ethylsulfinyl)ethyl)-O,O-dimethyl phosphorothioate. This organophosphorus pesticide is the active ingredient of Metasystox® , that was swallowed by a 77-year-old woman to commit suicide. ODM belongs to the class of dimethyl phosphoryl (DMP) pesticides, contains a 2-(ethylsulfinyl)ethanethiol (ESOET) leaving group and undergoes adduct formation with endogenous molecules as elaborated herein with human serum exposed to pesticides in vitro...
May 16, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29777622/comparative-analysis-of-the-bacterial-community-compositions-of-the-shrimp-intestine-surrounding-water-and-sediment
#7
Dongwei Hou, Zhijian Huang, Shenzheng Zeng, Jian Liu, Shaoping Weng, Jianguo He
AIMS: To reveal the relationship of the bacterial communities in shrimp intestine and surrounding environments. METHODS AND RESULTS: We examined bacterial communities in intestine of pacific white shrimp, Litopenaeus vannamei, the surrounding water and sediment by high-throughput sequencing analysis. Sequences were clustered into operational taxonomic units (OTUs) at 97% similarity levels, which ranged from 4,956 to 5,976 in each sample. All OTUs were affiliated with at least 64 phyla...
May 19, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29777595/a-ring-based-compensator-imrt-system-optimized-for-low-and-middle-income-countries-design-and-treatment-planning-study
#8
Jonathon Van Schelt, Daniel Smith, Nicholas Fong, Dolla Toomeh, Patricia A Sponseller, Derek W Brown, Meghan W Macomber, Nina A Mayr, Shilpen Patel, Adam Shulman, G V Subrahmanyam, K Govindarajan, Eric C Ford
PURPOSE: We propose a novel compensator-based IMRT system designed to provide a simple, reliable, and cost-effective adjunct technology, with the goal of expanding global access to advanced radiotherapy techniques. The system would employ easily-reusable tungsten bead compensators that operate independent of a gantry (e.g. mounted in a ring around the patient). Thereby the system can be retrofitted to existing linac and cobalt teletherapy units. This study explores the quality of treatment plans from the proposed system and the dependence on associated design parameters...
May 19, 2018: Medical Physics
https://www.readbyqxmd.com/read/29777200/a-map-of-the-pgc-1%C3%AE-and-nt-pgc-1%C3%AE-regulated-transcriptional-network-in-brown-adipose-tissue
#9
Ji Suk Chang, Sujoy Ghosh, Susan Newman, J Michael Salbaum
Transcriptional coactivator PGC-1α and its splice variant NT-PGC-1α play crucial roles in regulating cold-induced thermogenesis in brown adipose tissue (BAT). PGC-1α and NT-PGC-1α are highly induced by cold in BAT and subsequently bind to and coactivate many transcription factors to regulate expression of genes involved in mitochondrial biogenesis, fatty acid oxidation, respiration and thermogenesis. To identify the complete repertoire of PGC-1α and NT-PGC-1α target genes in BAT, we analyzed genome-wide DNA-binding and gene expression profiles...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777018/managing-the-sugar-factory-a-new-feather-in-the-cap-for-nuclear-factor-y
#10
Sabyasachi Sen, Chandrima Das
Gluconeogenesis in the liver converts lipids and several other noncarbohydrate precursors into glucose, ensuring that blood sugar levels are maintained at healthy levels, especially during fasting. Effective regulation of gluconeogenesis is therefore critical for maintaining systemic metabolic homeostasis. Zhang and colleagues have discovered that the ubiquitous transcriptional regulator nuclear factor Y (NF-Y) confers cAMP responsiveness to key gluconeogenic genes and up-regulates hepatic glucose production...
May 18, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29777011/fox-proteins-are-modular-competency-factors-for-facial-cartilage-and-tooth-specification
#11
Pengfei Xu, Bartosz Balczerski, Amanda Ciozda, Kristin Louie, Veronika Oralova, Ann Huysseune, J Gage Crump
Facial form depends on the precise positioning of cartilage, bone, and tooth fields in the embryonic pharyngeal arches. How complex signaling information is integrated to specify these cell types remains a mystery. We find that modular expression of Forkhead-domain transcription factors (Fox) in the zebrafish face arises through integration of Hh, Fgf, Bmp, Edn1, and Jagged-Notch pathways. Whereas loss of C-class Fox proteins results in reduced upper facial cartilages, loss of F-class Fox proteins results in distal jaw truncations and absent midline cartilages and teeth...
May 18, 2018: Development
https://www.readbyqxmd.com/read/29776900/the-biopsychosocial-digital-approach-to-health-and-disease-call-for-a-paradigm-expansion
#12
Alireza Ahmadvand, Robert Gatchel, John Brownstein, Lisa Nissen
Digital health is an advancing phenomenon in modern health care systems. Currently, numerous stakeholders in various countries are evaluating the potential benefits of digital health solutions at the individual, population, and/or organizational levels. Additionally, driving factors are being created from the customer-side of the health care systems to push health care providers, policymakers, or researchers to embrace digital health solutions. However, health care providers may differ in their approach to adopt these solutions...
May 18, 2018: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29776843/a-review-advocating-caution-with-major-league-soccer-expansion-and-investment-in-more-rehabilitation-professionals
#13
REVIEW
Cody J Mansfield, Carol Ferkovic-Mack, Julie Eibensteiner, Christy Zwolski
BACKGROUND AND PURPOSE: Major League Soccer (MLS) has aggressively expanded from 10 teams to 23 teams. With the addition of more teams, the league will have to dictate a schedule that maximizes the league's popularity, while also maintaining the health of the players. A longer season and congested game schedule could increase the risk of injury for players. The purpose of this commentary is to make recommendations for the prevention of injuries among MLS players with respect to proposed league expansion...
May 9, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29776653/accuracy-of-phase-contrast-velocity-mapping-proximal-and-distal-to-stent-artifact-during-cardiac-magnetic-resonance-imaging
#14
Catherine M Avitabile, Matthew A Harris, Ravi S Doddasomayajula, Steven G Chopski, Matthew J Gillespie, Yoav Dori, Andrew C Glatz, Mark A Fogel, Kevin K Whitehead
Little data are available on the accuracy of phase-contrast magnetic resonance imaging (PC-MRI) velocity mapping in the vicinity of intravascular metal stents other than nitinol stents. Therefore, we sought to determine this accuracy using in vitro experiments. An in vitro flow phantom was used with 3 stent types: (1) 316L stainless steel, (2) nitinol self-expanding, and (3) platinum-iridium. Steady and pulsatile flow was delivered with a magnetic resonance imaging-compatible pump (CardioFlow 5000, Shelley Medical, London, Ontario, Canada)...
April 20, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29776612/immunohistochemical-investigation-of-the-cross-reactivity-of-selected-cell-markers-in-formalin-fixed-paraffin-embedded-lymphoid-tissues-of-franciscana-pontoporia-blainvillei
#15
J Díaz-Delgado, R Ressio, K R Groch, J L Catão-Dias
A considerable amount of knowledge on natural and anthropogenic pathologic conditions affecting different cetacean species has been gained over the last decades. Nonetheless, the immunopathological bases for most of these processes have been poorly documented or remain unknown. Comparative immunopathological investigations in these species are precluded by the limited number of specific antibodies, most of which are not commercially available, and the reduced spectrum of validated and/or cross-reactive ones...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776455/optimization-and-validation-of-an-analytical-method-for-the-determination-of-some-trace-and-toxic-elements-in-canned-fruit-juices-using-quadrupole-inductively-coupled-plasma-mass-spectrometer
#16
Eglal R Souaya, Mona A Khorshed, Mahmoud M Ghuniem
Background: There is increasing concern about the health effects on humans due to continuous consumption of fruit juices contaminated with metals. Objective: Quadrupole inductively coupled mass spectrometry (Q-ICP-MS) was optimized, validated, and applied in routine analysis for determination of As, Pb, Cd, Sb, Hg, Cu, Zn, Fe, Al, Cr, Sn, Co, Mn, and Ni in fruit juice beverages. Methods: Several validation parameters, such as detection limits (DLs), quantification limits, linearity, accuracy, and measurement uncertainty (MU), were studied under optimized Q-ICP-MS conditions...
May 18, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/29776366/estimating-benefit-equity-of-government-health-subsidy-in-healthcare-services-in-shandong-province-china-a-cross-sectional-study
#17
Wenzhe Qin, Lingzhong Xu, Jiajia Li, Long Sun, Gan Ding, Hui Shao, Ningze Xu
BACKGROUND: Government health subsidy (GHS) is an effective tool to improve population health in China. Ensuring an equitable allocation of GHS, particularly among the poorer socio-economic groups, is a major goal of China's healthcare reform. The paper aims to explore how GHS was allocated across different socioeconomic groups, and how well the overall health system was performing in terms of the allocation of subsidy for different types of health services. METHODS: Data from China's National Health Services Survey (NHSS) in 2013 were used...
May 18, 2018: International Journal for Equity in Health
https://www.readbyqxmd.com/read/29776050/filamentary-structures-that-self-organize-due-to-adhesion
#18
A Sengab, R C Picu
We study the self-organization of random collections of elastic filaments that interact adhesively. The evolution from an initial fully random quasi-two-dimensional state is controlled by filament elasticity, adhesion and interfilament friction, and excluded volume. Three outcomes are possible: the system may remain locked in the initial state, may organize into isolated fiber bundles, or may form a stable, connected network of bundles. The range of system parameters leading to each of these states is identified...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29776047/dynamic-evolution-of-rayleigh-taylor-bubbles-from-sinusoidal-w-shaped-and-random-perturbations
#19
Zhi-Rui Zhou, You-Sheng Zhang, Bao-Lin Tian
Implicit large eddy simulations of two-dimensional Rayleigh-Taylor instability at different density ratios (i.e., Atwood number A=0.05, 0.5, and 0.9) are conducted to investigate the late-time dynamics of bubbles. To produce a flow field full of bounded, semibounded, and chaotic bubbles, three problems with distinct perturbations are simulated: (I) periodic sinusoidal perturbation, (II) isolated W-shaped perturbation, and (III) random short-wave perturbations. The evolution of height h, velocity v, and diameter D of the (dominant) bubble with time t are formulated and analyzed...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29775952/molecular-simulation-and-experimental-validation-of-resorcinol-adsorption-on-ordered-mesoporous-carbon-omc
#20
Zaki Uddin Ahmad, Bing Chao, Mas Iwan Konggidinata, Qiyu Lian, Mark E Zappi, Daniel Dianchen Gang
Numerous research works have been devoted in the adsorption area using experimental approaches. All these approaches are based on trial and error process and extremely time consuming. Molecular simulation technique is a new tool that can be used to design and predict the performance of an adsorbent. This research proposed a simulation technique that can greatly reduce the time in designing the adsorbent. In this study, a new Rhombic ordered mesoporous carbon (OMC) model is proposed and constructed with various pore sizes and oxygen contents using Materials Visualizer Module to optimize the structure of OMC for resorcinol adsorption...
April 27, 2018: Journal of Hazardous Materials
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