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https://www.readbyqxmd.com/read/28648038/-effects-of-na-h-exchanger-1-inhibitor-on-intestinal-injury-of-rats-with-burn-sepsis-and-the-mechanism
#1
W P Li, G Y Zhao, X K Yang
Objective: To observe the effects of Na(+) /H(+) exchanger 1 (NHE1) inhibitor on intestinal injury of rats with burn sepsis, and to explore the possible mechanism preliminarily. Methods: Ninety SD rats were divided into control group, pure sepsis group, and NHE1 inhibitor group according to the random number table, with 30 rats in each group. Full-thickness scald (hereinafter referred to as burn) model with 20% total body surface area were reproduced on the back of rats in pure sepsis and NHE1 inhibitor groups, and then 50 μL liquid of Pseudomonas aeruginosa ATCC 27853 (2×10(5) colony forming unit/mL) were injected into the center of wounds on the back...
June 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28647588/environmentally-relevant-concentrations-of-al-iii-and-fe-iii-cations-induce-aggregation-of-free-dna-by-complexation-with-phosphate-group
#2
Chao Qin, Fuxing Kang, Wei Zhang, Weijun Shou, Xiaojie Hu, Yanzheng Gao
Environmental persistence of free DNA is influenced by its complexation with other chemical species and its aggregation mechanisms. However, it is not well-known how naturally-abundant metal ions, e.g., Al(III) and Fe(III), influence DNA aggregation. This study investigated aggregation behaviors of model DNA from salmon testes as influenced by metal cations, and elucidated the predominant mechanism responsible for DNA aggregation. Compared to monovalent (K(+) and Na(+)) and divalent (Ca(2+) and Mg(2+)) cations, Al(III) and Fe(III) species in aqueous solution caused rapid DNA aggregations...
June 18, 2017: Water Research
https://www.readbyqxmd.com/read/28647557/kcc3-loss-of-function-contributes-to-andermann-syndrome-by-inducing-activity-dependent-neuromuscular-junction-defects
#3
Melissa Bowerman, Céline Salsac, Véronique Bernard, Claire Soulard, Annie Dionne, Emmanuelle Coque, Salim Benlefki, Pascale Hince, Patrick A Dion, Gillian Butler-Browne, William Camu, Jean-Pierre Bouchard, Eric Delpire, Guy A Rouleau, Cédric Raoul, Frédérique Scamps
Loss-of-function mutations in the potassium-chloride cotransporter KCC3 lead to Andermann syndrome, a severe sensorimotor neuropathy characterized by areflexia, amyotrophy and locomotor abnormalities. The molecular events responsible for axonal loss remain poorly understood. Here, we establish that global or neuron-specific KCC3 loss-of-function in mice leads to early neuromuscular junction (NMJ) abnormalities and muscular atrophy that are consistent with the pre-synaptic neurotransmission defects observed in patients...
June 21, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28647474/antiviral-profiling-of-the-capsid-assembly-modulator-bay41-4109-on-full-length-hbv-genotype-a-h-clinical-isolates-and-core-site-directed-mutants-in-vitro
#4
Jan Martin Berke, Ying Tan, Thierry Verbinnen, Pascale Dehertogh, Karen Vergauwen, Ann Vos, Oliver Lenz, Frederik Pauwels
The HBV core protein represents an attractive target for new antiviral therapies due to its multiple functions within the viral life-cycle. Here, we report the antiviral activity of the capsid assembly modulator (CAM) BAY41-4109 and two nucleos(t)ide analogues (NAs) on a diverse panel of 54 HBV clinical isolates from genotype (GT) A-H and assessed the impact of core amino acid (aa) substitutions using site-directed mutants (SDMs). The median EC50 values of BAY41-4109 across genotypes ranged from 26 nM in GT G to 215 nM in GT F irrespective of the presence of NA resistance mutations compared to 43 nM for the GT D reference construct...
June 21, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28647268/adsorption-of-ca-2-on-single-layer-graphene-oxide
#5
Amalia Terracciano, Jianfeng Zhang, Christos Christodoulatos, Fengchang Wu, Xiaoguang Meng
Graphene oxide (GO) holds great promise for a broad array of applications in many fields, but also poses serious potential risks to human health and the environment. In this study, the adsorptive properties of GO toward Ca(2+) and Na(+) were investigated using batch adsorption experiments, zeta potential measurements, and spectroscopic analysis. When pH increased from 4 to 9, Ca(2+) adsorption by GO and the zeta potential of GO increased significantly. Raman spectra suggest that Ca(2+) was strongly adsorbed on the GO via -COOCa(+) formation...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647261/removal-of-ammonium-ion-from-water-by-na-rich-birnessite-performance-and-mechanisms
#6
Ya Cheng, Tinglin Huang, Xinxin Shi, Gang Wen, Yuankui Sun
Na-rich birnessite (NRB) was synthesized by a simple synthesis method and used as a high-efficiency adsorbent for the removal of ammonium ion (NH4(+)) from aqueous solution. In order to demonstrate the adsorption performance of the synthesized material, the effects of contact time, pH, initial ammonium ion concentration, and temperature were investigated. Adsorption kinetics showed that the adsorption behavior followed the pseudo second-order kinetic model. The equilibrium adsorption data were fitted to Langmuir and Freundlich adsorption models and the model parameters were evaluated...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647191/pyrrolidine-dithiocarbamate-alleviates-the-anti-tuberculosis-drug-induced-liver-injury-through-jak2-stat3-signaling-pathway-an-experimental-study
#7
Hong Zhang, Yang Liu, Li-Kun Wang, Na Wei
OBJECTIVE: To study the effect of pyrrolidine dithiocarbamate (PDTC) on the anti-tuberculosis drug-induced liver injury and the molecular mechanism. METHODS: Clean male SD rats were selected as experimental animals and randomly divided into normal group, model group, PDTC group and AG490 group. Animal model of anti-tuberculosis drug-induced liver injury was established by intragastric administration isoniazid + rifampicin. PDTC group received intraperitoneal injection of PDTC, and AG490 group received intraperitoneal injection of AG490...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28646854/treatment-delay-and-fatal-outcomes-of-pulmonary-tuberculosis-in-advanced-age-a-retrospective-nationwide-cohort-study
#8
Chih-Hsin Lee, Jann-Yuan Wang, Hsien-Chun Lin, Pai-Yang Lin, Jer-Hwa Chang, Chi-Won Suk, Li-Na Lee, Chou-Chin Lan, Kuan-Jen Bai
BACKGROUND AND OBJECTIVE: Studies focusing on pulmonary tuberculosis in advanced age (≥80 years) are lacking. This study aimed to explore treatment delay, outcomes and their predictors in this group. METHODS: Adult (≥20 years) patients with pulmonary tuberculosis were identified from the National Health Insurance Research Database of Taiwan from 2004 to 2009. Treatment completion and mortality rates were noted at one year after treatment. RESULTS: Among the 81,081 patients with pulmonary tuberculosis identified, 13,923 (17...
June 24, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28646811/alternative-therapy-for-patients-with-obstructive-sleep-apnea-hypopnea-syndrome-a-1-year-single-blind-randomized-trial-of-tui-na
#9
Cheng-Nan Lu, Michael Friedman, Hsin-Ching Lin, Kuo-Wei Bi, Tun-Pin Hsueh, Hsueh-Wen Chang, Mao-Chang Su, Meng-Chih Lin
Context • Obstructive sleep apnea/hypopnea syndrome (OSAHS) is among the most prevalent of sleep-related breathing disorders. No long-term follow-up studies have documented the continued success of lifestyle changes in treatment; oral appliances have an approximate 50% success rate; compliance with continuous positive airway pressure is poor, ranging from 50% to 89%; and the success rate of upper-airway surgery is only 66.4%. Therefore, some OSAHS patients seek alternative treatments. Objectives • The study intended to examine the efficacy of traditional Chinese therapeutic massage (tui na) for patients with OSAHS...
July 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28646799/tracking-the-activity-of-the-anammox-damo-process-using-excitation-emission-matrix-eem-fluorescence-spectroscopy
#10
Yong-Ze Lu, Na Li, Zhao-Wei Ding, Liang Fu, Ya-Nan Bai, Guo-Ping Sheng, Raymond J Zeng
Coupling of anaerobic ammonium oxidation (anammox) and denitrifying anaerobic methane oxidation (DAMO) microorganisms in a hollow-fiber membrane biofilm reactor (HfMBR) is a potential strategy for simultaneous anaerobic removal of nitrogen and methane in wastewater streams. In these systems, effluents contain dissolved organic substances from anammox and DAMO microorganisms, but their characteristics and relationships have not been investigated. In the present study, excitation-emission matrix (EEM) fluorescence spectroscopy was used to characterize effluent dissolved organic matter (EfDOM) from an Anammox-DAMO HfMBR...
June 14, 2017: Water Research
https://www.readbyqxmd.com/read/28646721/biochemical-immunological-hybrid-biosensor-based-on-two-dimensional-chromatography-for-on-site-sepsis-diagnosis
#11
Seung-Wan Kim, Il-Hoon Cho, Guei-Sam Lim, Gi-Na Park, Se-Hwan Paek
A hybrid-biosensor system that can simultaneously fulfill the immunoassay for protein markers (e.g., C-reactive protein (CRP) and procalcitonin (PCT)) and the enzyme assay for metabolic substances (e.g., lactate) in the same sepsis-based sample has been devised. Such a challenge was pursued through the installation of an enzyme-reaction zone on the signal pad of the typical immuno-strip for the rapid two-dimensional (2-D)-chromatography test. To minimize the mutual interference in the hybrid assays, a pre-determined membrane site was etched in a pattern and mounted with a biochemical-reaction pad, thereby allowing a loaded sample to enter and then stay in the pad for a colored-signal production over the course of an immunoassay...
June 16, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28646662/estimation-of-the-molar-absorption-coefficient-of-copper-salicylate-within-the-spectral-range-300-350nm
#12
N L Lavrik, N U Mulloev
Additional absorption was detected in absorption spectra within the range 300-350nm after addition of copper sulfate CuSO4(aq) to a solution of sodium salicylate NaНSal (рН=7.8). The additional maximum absorption was observed at 320nm. Assuming that the additional absorption depends on the formation of copper salicylate CuSal, the molar absorption coefficient εCuSal of this complex was determined to be (3.8±0.02)·10(3)М(-1)сm(-1). This value is almost equal to that of monoanion HSal(-), εHSal-=(3.6±0...
June 7, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28646621/the-hydrophobic-side-chain-of-oseltamivir-influences-type-a-subtype-selectivity-of-neuraminidase-inhibitors
#13
Xiong Lin, Chen Qin-Hua, Li Peng, Li Chun-Lei, Yang Guang-De
Neuraminidase, which plays a critical role in the influenza virus life cycle, is a target for new therapeutic agents. The study of structure-activity relationships revealed that the C-5 position amino group of oseltamivir was pointed to 150-cavity of the neuraminidase in group-1. This cavity is important for selectivity of inhibitors against N1 versus N2 NA. A serial of influenza neuraminidase inhibitors with the oseltavimir scaffold containing lipophilic side chains at the C-5 position have been synthesized and evaluated for their influenza neuraminidase inhibitory activity and selectivity...
June 24, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28646309/influence-of-polymethyl-acrylate-additive-on-the-formation-of-particulate-matter-and-nox-emission-of-a-biodiesel-diesel-fueled-engine
#14
Islam Mohammad Monirul, Haji Hassan Masjuki, Mohammad Abdul Kalam, Nurin Wahidah Mohd Zulkifli, Islam Shancita
The aim of this study is to investigate the effect of the polymethyl acrylate (PMA) additive on the formation of particulate matter (PM) and nitrogen oxide (NOX) emission from a diesel coconut and/or Calophyllum inophyllum biodiesel-fueled engine. The physicochemical properties of 20% of coconut and/or C. inophyllum biodiesel-diesel blend (B20), 0.03 wt% of PMA with B20 (B20P), and diesel fuel were measured and compared to ASTM D6751, D7467, and EN 14214 standard. The test results showed that the addition of PMA additive with B20 significantly improves the cold-flow properties such as pour point (PP), cloud point (CP), and cold filter plugging point (CFPP)...
June 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28646216/effects-of-naftopidil-on-double-j-stent-related-discomfort-a-multicenter-randomized-double-blinded-placebo-controlled-study
#15
Jong Jin Oh, Sangchul Lee, Sung Yong Cho, Sang Wook Lee, Min Chul Cho, Woong Na, Ju Hyeon Park, Seung Bae Lee, Soyeon Ahh, Chang Wook Jeong
To evaluate the effect of naftopidil 75 mg once daily for ureteral double-J (DJ) stent-related discomfort after a ureteroscopic procedure using a multicenter, randomized, double-blinded, placebo-controlled study. 100 patients with indwelled retrograde DJ ureteral stents after ureteroscopic stone removal or retrograde intrarenal surgery (RIRS) were randomized 1:1 to receive either placebo or naftopidil during the stenting period. At the time of stent removal, the Ureteral Stent Symptom Questionnaire (USSQ), the International Prostate Symptom Score and the total amount of used analgesics were reported...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646204/optogenetic-protein-clustering-through-fluorescent-protein-tagging-and-extension-of-cry2
#16
Hyerim Park, Na Yeon Kim, Sangkyu Lee, Nury Kim, Jihoon Kim, Won Do Heo
Protein homo-oligomerization is an important molecular mechanism in many biological processes. Therefore, the ability to control protein homo-oligomerization allows the manipulation and interrogation of numerous cellular events. To achieve this, cryptochrome 2 (CRY2) from Arabidopsis thaliana has been recently utilized for blue light-dependent spatiotemporal control of protein homo-oligomerization. However, limited knowledge on molecular characteristics of CRY2 obscures its widespread applications. Here, we identify important determinants for efficient cryptochrome 2 clustering and introduce a new CRY2 module, named ''CRY2clust'', to induce rapid and efficient homo-oligomerization of target proteins by employing diverse fluorescent proteins and an extremely short peptide...
June 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28646178/increased-glomerular-filtration-rate-and-impaired-contractile-function-of-mesangial-cells-in-trpc6-knockout-mice
#17
Weizu Li, Yanfeng Ding, Crystal Smedley, Yanxia Wang, Sarika Chaudhari, Lutz Birnbaumer, Rong Ma
The present study was conducted to determine if TRPC6 regulates glomerular filtration rate (GFR) and the contractile function of glomerular mesangial cells (MCs). GFR was assessed in conscious TRPC6 wild type and knockout mice, and in anesthetized rats with and without in vivo knockdown of TRPC6 in kidneys. We found that GFR was significantly greater, and serum creatinine level was significantly lower in TRPC6 deficient mice. Consistently, local knockdown of TRPC6 in kidney using TRPC6 specific shRNA construct significantly attenuated Ang II-induced GFR decline in rats...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646122/nintedanib-a-triple-tyrosine-kinase-inhibitor-attenuates-renal-fibrosis-in-chronic-kidney-disease
#18
Feng Liu, Li Wang, Hualin Qi, Jun Wang, Wei Jiang, Yi Wang, Liuqing Xu, Na Liu, Shougang Zhuang
<span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;">Nintedanib (BIBF1120) is a triple kinase inhibitor</span><span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;"> of </span><span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;">platelet derived growth factor receptor (PDGFR), fibroblast growth factor receptors (FGFR)</span><span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;">, </span><span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;">vascular endothelial growth factor receptor (VEGFR)</span><span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;"> and Src family kinase, </span><span style="margin: 0px; color: black; line-height: 200%; font-family: 'Times New Roman',serif; font-size: 12pt;">that has recently been approved by FDA to treat idiopathic pulmonary fibrosis...
June 23, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28646025/remodeling-of-repolarization-and-arrhythmia-susceptibility-in-a-myosin-binding-protein-c-knockout-mouse-model
#19
Amir Toib, Chen Zhang, Giulia Borghetti, Xiaoxiao Zhang, Markus Wallner, Yijun Yang, Constantine Troupes, Hajime Kubo, Thomas Sharp, Eric Feldsott, Remus M Berretta, Neil Zalavadia, Danielle Trappanese, Shavonn Harper, Polina Gross, Xiongwen Chen, Sadia Mohsin, Steven Houser
Hypertrophic cardiomyopathy (HCM) is one of the most common genetic cardiac diseases and amongst the leading causes of sudden cardiac death (SCD) in the young. The cellular mechanisms leading to SCD in HCM are not well known. Prolongation of the action potential duration (APD) is a common feature predisposing hypertrophied hearts to SCD. Previous studies have explored the roles of inward Na(+) and Ca(2+) in the development of HCM, but the role of repolarizing K(+) currents have not been defined. The objective of this study was to characterize the arrhythmogenic phenotype and cellular electrophysiological properties of mice with HCM, induced by Myosin Binding Protein C (MyBPC) Knockout (KO) and to test the hypothesis that remodeling of repolarizing K(+) currents cause APD prolongation in MyBPC KO myocytes...
June 23, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28645727/inhibition-of-non-canonical-hiv-1-tat-secretion-through-the-cellular-na-k-atpase-blocks-hiv-1-infection
#20
Silvia Agostini, Hashim Ali, Chiara Vardabasso, Antonio Fittipaldi, Ennio Tasciotti, Anna Cereseto, Antonella Bugatti, Marco Rusnati, Marina Lusic, Mauro Giacca
Besides its essential role in the activation of HIV-1 gene expression, the viral Tat protein has the unusual property of trafficking in and out of cells. In contrast to Tat internalization, the mechanism involved in extracellular Tat release has so far remained elusive. Here we show that Tat secretion occurs through a Golgi-independent pathway requiring binding of Tat with three short, non-consecutive intracytoplasmic loops at the C-terminus of the cellular Na(+),K(+)-ATPase pump alpha subunit. Ouabain, a pump inhibitor, blocked this interaction and prevented Tat secretion; virions produced in the presence of this drug were less infectious, consistent the capacity of virion-associated Tat to increase HIV-1 infectivity...
June 13, 2017: EBioMedicine
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