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https://www.readbyqxmd.com/read/29346493/antimicrobial-studies-using-the-therapeutic-tissue-cross-linking-agent-sodium-hydroxymethylglycinate-implication-for-treating-infectious-keratitis
#1
Patrick B Rapuano, Alexandra H Scanameo, Daeryl E Amponin, Sefy A Paulose, Mariya Zyablitskaya, Anna Takaoka, Leejee H Suh, Takayuki Nagasaki, Stephen L Trokel, David C Paik
Purpose: Our recent studies raise the possibility of using sodium hydroxymethylglycinate (SMG), for pharmacologic therapeutic tissue cross-linking (TXL) of the cornea. The present study was performed to evaluate the antimicrobial effects of SMG for potential use in treating infectious keratitis. Methods: In initial (group 1) experiments, methicillin-sensitive Staphylococcus aureus (MSSA), methicillin-resistant Staphylococcus aureus (MRSA), and Pseudomonas aeruginosa (PA) were treated with SMG (10-40 mM) for 10 to 120 minutes...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29345520/correlates-of-physical-activity-among-middle-aged-and-older-adults-with-hazardous-drinking-habits-in-six-low-and-middle-income-countries
#2
Davy Vancampfort, Brendon Stubbs, Mats Hallgren, Andreas Lundin, James Mugisha, Ai Koyanagi
We investigated physical activity (PA) correlates among middle-aged and older adults (aged ≥50 years) with hazardous drinking patterns in six low-and-middle-income countries (LMICs). Cross-sectional data were analyzed from the World Health Organization's Study on Global Ageing and Adult Health. Hazardous drinking was defined as consuming >7 (females) or >14 (males) standard drinks per week. Participants were dichotomized into low (i.e. not meeting 150 minutes of moderate PA / week) and moderate-to-high physically active groups...
January 18, 2018: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/29345473/highly-sensitive-and-ultrastable-skin-sensors-for-biopressure-and-bioforce-measurements-based-on-hierarchical-microstructures
#3
Qi-Jun Sun, Jiaqing Zhuang, Shishir Venkatesh, Ye Zhou, Su-Ting Han, Wei Wu, Ka-Wai Kong, Wen-Jung Li, Xianfeng Chen, Robert K Y Li, Vellaisamy A L Roy
Piezoresistive microsensors are considered to be essential components of the future wearable electronic devices. However, the expensive cost, complex fabrication technology, poor stability, and low yield have limited their developments for practical applications. Here, we present a cost-effective, relatively simple, and high-yield fabrication approach to construct highly sensitive and ultrastable piezoresistive sensors using a bioinspired hierarchically structured graphite/polydimethylsiloxane composite as the active layer...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29345310/a-potential-role-of-knockout-serum-replacement-as-a-porcine-follicular-fluid-substitute-for-in-vitro-maturation-lipid-metabolism-approach
#4
Jun-Xue Jin, Sanghoon Lee, Erif Maha Nugraha Setyawan, Anukul Taweechaipaisankul, Geon A Kim, Ho Jae Han, Curie Ahn, Byeong Chun Lee
The use of supplements, such as porcine follicular fluid (pFF), fetal bovine serum and human serum albumin are widely used during in vitro maturation (IVM) in different species but these supplements contain undefined components that cause technical difficulties in standardization and influence the efficiency of IVM. Knockout serum replacement (KSR) is a synthetic protein source, without any undefined growth factors or differentiation-promoting factors. Therefore, it is feasible to use KSR as a defined component for avoiding effects of unknown molecules in an IVM system...
January 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29345215/relationship-of-weekend-warrior-and-regular-physical-activity-patterns-with-metabolic-syndrome-and-its-associated-diseases-among-chinese-rural-adults
#5
Jing Xiao, Minjie Chu, Huan Shen, Wenlong Ren, Zhou Li, Tianqi Hua, Hong Xu, Yuanyuan Liang, Yuexia Gao, Xun Zhuang
Little is known about the "weekend warrior" pattern of physical activity (PA) where people perform all their PA in 1 or 2 sessions per week. We investigated the relationship of weekend warrior and other PA patterns with metabolic syndrome (MS) and its associated diseases. Data on sociodemographic and lifestyle characteristics were collected from the Nantong Metabolic Syndrome Study that included 13,505 women and 6,997 men between 2007 and 2008. Compared with inactive participants, weekend warriors were at lower risk of MS, diabetes, and hypertension; respective odds ratios (95% confidence intervals) for men and women were 0...
January 18, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29345067/supramolecular-gels-derived-from-the-salts-of-variously-substituted-phenylacetic-acid-and-dicyclohexyl-amine-design-synthesis-structures-and-dye-adsorption
#6
Parthasarathi Dastidar, Rajdip Roy, Tapas Kumar Adalder
A well-studied supramolecular synthon namely secondary ammonium monocarboxylate (SAM) was exploited to generate a new series of organic salts derived from variously substituted phenylacetic acid (PA) and dicyclohexyl amine (DCA) as potential low molecular weight gelators (LMWGs). As much as 25% of the SAM salts under study were gelators. The gels were characterized by rheology and the morphology of the gel networks was studied by high resolution electron microscopy. Single crystal and powder X-ray diffraction data were employed to study structure-property (gelation) correlation...
January 18, 2018: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29345016/evaluation-of-the-implementation-of-a-24-hour-stroke-thrombolysis-emergency-treatment-for-patients-with-acute-ischemic-stroke
#7
Jun Zhao, Xingqiang Li, Yingchun Liang, Liang Zhao, Xinping Zhang, Yunlin Liu
AIMS AND OBJECTIVES: To assess the trends of intravenous (IV) thrombolysis with recombinant tissue plasminogen activator (rt-PA) among patients with acute ischemic stroke (AIS) admitted to our hospital between 2012 and 2014 and investigate the effects of a 24-hours (h) stroke thrombolysis emergency treatment on the intra-hospital clinical data and outcomes of these patients treated with IV rt-PA thrombolysis. BACKGROUND: Although pre-notification of stroke by emergency medical services have been endorsed by the national recommendations and implemented in some developed countries, the development in China is limited...
January 18, 2018: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29344963/refractory-pulmonary-edema-and-upper-body-hypoxemia-during-veno-arterial-extracorporeal-membrane-oxygenation-a-case-for-atrial-septostomy
#8
Amit Prasad, Ali Ghodsizad, Christoph Brehm, Mark Kozak, Michael Körner, Aly El Banayosy, Kai Singbartl
Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) provides mechanical circulatory support for patients with advanced cardiogenic shock, facilitating myocardial recovery and limiting multi-organ failure. In patients with severely limited left ventricular ejection, peripheral VA-ECMO can further increase left ventricular and left atrial pressures (LAP). Failure to decompress the left heart under these circumstances can result in pulmonary edema and upper body hypoxemia, that is, myocardial and cerebral ischemia...
January 18, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29343984/appropriateness-of-sham-or-placebo-acupuncture-for-randomized-controlled-trials-of-acupuncture-for-nonspecific-low-back-pain-a-systematic-review-and-meta-analysis
#9
Yan Xiang, Jinyuan He, Rui Li
Objectives: To establish whether sham acupuncture (SA) or placebo acupuncture (PA) is more efficacious for reducing low back pain (LBP) than other routine treatments and to discuss whether SA or PA is appropriate for randomized controlled trials of acupuncture for LBP. Methods: Six databases were searched on 31 May 2017. We included only randomized controlled trials of adults with LBP and lower back myofascial pain syndrome. The studies had at least two control arms: a sham-controlled acupuncture arm and a routine care or waiting list arm (people who did not receive acupuncture until the end of treatment)...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29342894/crystallization-of-tio%C3%A2-nanotubes-by-in-situ-heating-tem
#10
Alberto Casu, Andrea Lamberti, Stefano Stassi, Andrea Falqui
The thermally-induced crystallization of anodically grown TiO₂ amorphous nanotubes has been studied so far under ambient pressure conditions by techniques such as differential scanning calorimetry and in situ X-ray diffraction, then looking at the overall response of several thousands of nanotubes in a carpet arrangement. Here we report a study of this phenomenon based on an in situ transmission electron microscopy approach that uses a twofold strategy. First, a group of some tens of TiO₂ amorphous nanotubes was heated looking at their electron diffraction pattern change versus temperature, in order to determine both the initial temperature of crystallization and the corresponding crystalline phases...
January 14, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29342268/reduced-expression-of-mismatch-repair-genes-msh6-msh2-directly-promotes-pituitary-tumor-growth-via-the-atr-chk1-pathway
#11
Shinsuke Uraki, Hiroyuki Ariyasu, Asako Doi, Shintaro Kawai, Ken Takeshima, Shuhei Morita, Junya Fukai, Koji Fujita, Hiroto Furuta, Masahiro Nishi, Kokichi Sugano, Naoko Inoshita, Naoyuki Nakao, Shozo Yamada, Takashi Akamizu
Context: The mechanisms of pituitary adenoma (PA) pathogenesis and proliferation remain largely unknown. Objectives: To evaluate the direct association between PA proliferation and expression of mismatch repair (MMR) genes and proteins, and to clarify the role of MMR genes in the molecular mechanism of PA proliferation. Experimental Design: We performed quantitative analyses by real-time PCR and immunohistochemistry to detect MMR gene and protein expression in human PAs (n = 47)...
January 12, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29342187/induction-of-high-tolerance-to-artemisinin-by-sub-lethal-administration-a-new-in-vitro-model-of-p-falciparum
#12
Serena De Lucia, Ioannis Tsamesidis, Maria Carmina Pau, Kristina R Kesely, Antonella Pantaleo, Francesco Turrini
Artemisinin resistance is a major threat to malaria control efforts. Resistance is characterized by an increase in the Plasmodium falciparum parasite clearance half-life following treatment with artemisinin-based combination therapies (ACTs) and an increase in the percentage of surviving parasites. The remarkably short blood half-life of artemisinin derivatives may contribute to drug-resistance, possibly through factors including sub-lethal plasma concentrations and inadequate exposure. Here we selected for a new strain of artemisinin resistant parasites, termed the artemisinin resistant strain 1 (ARS1), by treating P...
2018: PloS One
https://www.readbyqxmd.com/read/29342112/useful-bicistronic-reporter-system-for-studying-poly-a-site-defining-cis-elements-and-regulation-of-alternative-polyadenylation
#13
Zhongyuan Deng, Shen Zhang, Shaohua Gu, Xinzhi Ni, Wenxian Zeng, Xianchun Li
The link between polyadenylation (pA) and various biological, behavioral, and pathological events of eukaryotes underlines the need to develop in vivo polyadenylation assay methods for characterization of the cis-acting elements, trans-acting factors and environmental stimuli that affect polyadenylation efficiency and/or relative usage of two alternative polyadenylation (APA) sites. The current protein-based CAT or luciferase reporter systems can measure the polyadenylation efficiency of a single pA site or candidate cis element but not the choice of two APA sites...
January 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29341873/differences-in-heart-rate-reserve-of-similar-physical-activities-during-work-and-in-leisure-time-a-study-among-danish-blue-collar-workers
#14
Pieter Coenen, Mette Korshøj, David M Hallman, Maaike A Huysmans, Allard J van der Beek, Leon M Straker, Andreas Holtermann
Recent studies suggest that while leisure-time physical activity (LTPA) promotes general health, engaging in occupational physical activity (OPA) may have negative health consequences. It has been hypothesized that the different health effects from OPA and LTPA can be explained by differences in physical activity (PA) intensity in these two domains. To assess the intensity of OPA and LTPA, we aimed to study the percentage heart rate reserve (%HRR) during similar types of OPA and LTPA during workdays. Data from the NOMAD study on Danish blue-collar workers (n=124) with objective measurements of PA (using accelerometers) and heart rate (using heart rate monitors) for 4 workdays were analysed...
January 13, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29341714/kinetically-controlled-two-step-amorphization-and-amorphous-amorphous-transition-in-ice
#15
Chuanlong Lin, Xue Yong, John S Tse, Jesse S Smith, Stanislav V Sinogeikin, Curtis Kenney-Benson, Guoyin Shen
We report the results of in situ structural characterization of the amorphization of crystalline ice Ih under compression and the relaxation of high-density amorphous (HDA) ice under decompression at temperatures between 96 and 160 K by synchrotron x-ray diffraction. The results show that ice Ih transforms to an intermediate crystalline phase at 100 K prior to complete amorphization, which is supported by molecular dynamics calculations. The phase transition pathways show clear temperature dependence: direct amorphization without an intermediate phase is observed at 133 K, while at 145 K a direct Ih-to-IX transformation is observed; decompression of HDA shows a transition to low-density amorphous ice at 96 K and ∼1  Pa, to ice Ic at 135 K and to ice IX at 145 K...
September 29, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341484/nasal-ventilation-is-an-important-factor-in-evaluating-the-diagnostic-value-of-nasal-nitric-oxide-in-allergic-rhinitis
#16
Jing Hou, Hongfei Lou, Yang Wang, Fei He, Feifei Cao, Chengshuo Wang, Luo Zhang
BACKGROUND: The role of nasal nitric oxide (NO) in the diagnosis of allergic rhinitis (AR) is controversial. The aim of this study was to identify factors that may affect levels of nasal NO in AR patients and evaluate the role of nasal NO in the diagnosis of AR. METHODS: Seventy-five AR patients and 31 healthy controls were enrolled in this study. AR symptom scores were assessed using the visual analog scale. Eosinophil cationic protein (ECP) was detected by enzyme-linked immunoassay, nasal NO was measured using a chemiluminescence analyzer, and nasal airway resistance (NAR) was assessed by active anterior rhinomanometry...
January 17, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29340795/the-sesquiterpene-botrydial-from-botrytis-cinerea-induces-phosphatidic-acid-production-in-tomato-cell-suspensions
#17
Juan Martin D'Ambrosio, Gabriela Gonorazky, Daniela J Sueldo, Javier Moraga, Andrés Arruebarrena Di Palma, Lorenzo Lamattina, Isidro González Collado, Ana Maria Laxalt
The phytotoxin botrydial triggers PA production in tomato cell suspensions via PLD and PLC/DGK activation. PLC/DGK-derived PA is partially required for botrydial-induced ROS generation. Phosphatidic acid (PA) is a phospholipid second messenger involved in the induction of plant defense responses. It is generated via two distinct enzymatic pathways, either via phospholipase D (PLD) or by the sequential action of phospholipase C and diacylglycerol kinase (PLC/DGK). Botrydial is a phytotoxic sesquiterpene generated by the necrotrophic fungus Botrytis cinerea that induces diverse plant defense responses, such as the production of reactive oxygen species (ROS)...
January 16, 2018: Planta
https://www.readbyqxmd.com/read/29340285/quantitative-bone-scan-lesion-area-as-an-early-surrogate-outcome-measure-indicative-of-overall-survival-in-metastatic-prostate-cancer
#18
Matthew S Brown, Grace Hyun J Kim, Gregory H Chu, Bharath Ramakrishna, Martin Allen-Auerbach, Cheryce P Fischer, Benjamin Levine, Pawan K Gupta, Christiaan W Schiepers, Jonathan G Goldin
A clinical validation of the bone scan lesion area (BSLA) as a quantitative imaging biomarker was performed in metastatic castration-resistant prostate cancer (mCRPC). BSLA was computed from whole-body bone scintigraphy at baseline and week 12 posttreatment in a cohort of 198 mCRPC subjects (127 treated and 71 placebo) from a clinical trial involving a different drug from the initial biomarker development. BSLA computation involved automated image normalization, lesion segmentation, and summation of the total area of segmented lesions on bone scan AP and PA views as a measure of tumor burden...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29339577/a-wearable-pressure-sensor-based-on-ultra-violet-ozone-microstructured-carbon-nanotube-polydimethylsiloxane-arrays-for-electronic-skins
#19
Guohui Yu, Jingdong Hu, Jianping Tan, Yang Gao, Yongfeng Lu, Fu-Zhen Xuan
Pressure sensors with high performance (e.g., a broad pressure sensing range, high sensitivities, rapid response/relaxation speeds, temperature-stable sensing), as well as a cost-effective and highly efficient fabrication method are highly desired for electronic skins. In this research, a high-performance pressure sensor based on microstructured carbon nanotube/polydimethylsiloxane arrays was fabricated using an ultra-violet/ozone (UV/O3) microengineering technique. The UV/O3 microengineering technique is controllable, cost-effective, and highly efficient since it is conducted at room temperature in an ambient environment...
January 17, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29339107/influenza-a-virus-polymerase-an-attractive-target-for-next-generation-anti-influenza-therapeutics
#20
REVIEW
Zhongxia Zhou, Tao Liu, Jian Zhang, Peng Zhan, Xinyong Liu
The influenza RNA-dependent RNA polymerase (RdRP) is conserved among different types of influenza virus, playing an important part in transcription and replication. In this regard, influenza RdRP is an attractive target for novel anti-influenza drug discovery. Herein, we will introduce the structural and functional information of influenza polymerase; and an overview of inhibitors targeting the PA endonuclease and PB2 cap-binding site is provided, along with the approaches utilized for identification of these inhibitors...
January 12, 2018: Drug Discovery Today
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