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https://www.readbyqxmd.com/read/29140837/disruption-of-biofilms-and-neutralization-of-bacteria-using-hypochlorous-acid-solution-an-in-vivo-and-in-vitro-evaluation
#1
Anna Day, Abdulnaser Alkhalil, Bonnie C Carney, Hilary N Hoffman, Lauren T Moffatt, Jeffrey W Shupp
OBJECTIVES: The aims of this study were to assess the effectiveness of a hypochlorous acid-based wound cleanser (Vashe Wound Solution [VWS], SteadMed Medical, Fort Worth, Texas) in disrupting methicillin-resistant Staphylococcus aureus and Pseudomonas aeruginosa biofilms relative to other cleansers using an in vitro collagen biofilm model and to evaluate cleansers' cytotoxicity. The bioburden reduction of venous stasis wounds by VWS and another cleanser was evaluated. METHODS: Plates coated with collagen films incubated with active bacteria cultures to yield biofilm mimics were treated with VWS, 1% and 10% povidone-iodine (PI), 0...
December 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29140706/a-galactosylated-pro-drug-of-ursodeoxycholic-acid-design-synthesis-characterization-and-pharmacological-effects-in-a-rat-model-of-estrogen-induced-cholestasis
#2
Francesca Di Guida, Claudio Pirozzi, Salvatore Magliocca, Anna Santoro, Adriano Lama, Roberto Russo, Maria Nieddu, Lucia Burrai, Gianpiero Boatto, Maria Pina Mollica, Federica Sodano, Loretta Lazzarato, Konstantin Chegaev, Rosaria Meli, Giuseppina Mattace Raso, Maria Grazia Rimoli
Ursodeoxycholic acid (UDCA) is considered the first-choice therapy for cholestatic disorders. To enhance solubility and exploit specific transporters in liver, we synthesized a new galactosyl pro-drug of UDCA (UDCAgal). Ethinylestradiol (EE)-induced cholestasis was used to study and compare the effects of UDCAgal with UDCA on bile flow, hepatic canalicular efflux transporter expression, and inflammation. UDCAgal resulted quite stable both at pH 7.4 and 1.2 and regenerated the parent drug after incubation in human plasma...
November 15, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29137143/evaluation-of-a-mass-media-campaign-to-increase-the-awareness-of-the-need-to-reduce-discretionary-salt-use-in-the-south-african-population
#3
Edelweiss Wentzel-Viljoen, Krisela Steyn, Carl Lombard, Anniza De Villiers, Karen Charlton, Sabine Frielinghaus, Christelle Crickmore, Vash Mungal-Singh
The South African strategic plan to reduce cardiovascular disease (CVD) includes reducing population salt intake to less than 5 g/day. A mass media campaign was undertaken to increase public awareness of the association between high salt intake, blood pressure and CVD, and focused on the reduction of discretionary salt intake. Community based surveys, before and after the campaign, were conducted in a cohort of black women aged 18-55 years. Questions on knowledge, attitudes and beliefs regarding salt use were asked...
November 12, 2017: Nutrients
https://www.readbyqxmd.com/read/29135240/an-osmotic-membrane-bioreactor-membrane-distillation-system-for-simultaneous-wastewater-reuse-and-seawater-desalination-performance-and-implications
#4
Wenhai Luo, Hop V Phan, Guo Xue Li, Faisal I Hai, William Evan Price, Menachem Elimelech, Long D Nghiem
In this study, we demonstrate the potential of an osmotic membrane bioreactor (OMBR) - membrane distillation (MD) hybrid system for simultaneous wastewater reuse and seawater desalination. A stable OMBR water flux of approximately 6 L m-2 h-1 was achieved when using MD to regenerate the seawater draw solution. Water production by the MD process was higher than that from OMBR to desalinate additional seawater and thus account for draw solute loss due to the reverse salt flux. Amplicon sequencing on the Miseq Illumina platform evidenced bacterial acclimatization to salinity build-up in the bioreactor, though there was a reduction in the bacterial community diversity...
November 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29134979/amlodipine-corrects-changes-in-blood-pressure-and-baroreceptor-reflex-sensitivity-in-sprague-dawley-rats-fed-a-high-salt-diet
#5
A A Adejare, O A Sofola
High dietary salt ingestion causes elevated blood pressure both in humans and in experimental animals.Following reports that Calcium Channel Blockers may exhibit differences in the response of blood vessels to pressor agents,this study sought to test the effects of amlodipine on blood pressure (BP) and baroreceptor reflex sensitivity (BRS) responsesto high salt ingestion. Three groups of weanling Sprague-Dawley rats i.e. control rats (CR), salt loaded rats (SR) and saltloaded rats concomitantly administered orally with amlodipine (SR+Am) were used...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29134812/deoxycholate-enhanced-shigella-virulence-is-regulated-by-a-rare-%C3%AF-helix-in-the-type-three-secretion-system-tip-protein-ipad
#6
Abram R Bernard, T Carson Jessop, Prashant Kumar, Nicholas E Dickenson
Type three secretion systems (T3SS) are specialized nano-machines that support infection by injecting bacterial proteins directly into host cells. The Shigella T3SS has uniquely evolved to sense environmental levels of the bile salt deoxycholate (DOC) and up-regulate virulence in response to DOC. In this study, we describe a rare i+5 hydrogen bonding secondary structure element (π-helix) within the type three secretion system tip protein IpaD that plays a critical role in DOC-enhanced virulence. Specifically, engineered mutations within the π-helix altered the pathogen's response to DOC with one mutant construct in particular exhibiting an unprecedented reduction in virulence following DOC exposure...
November 14, 2017: Biochemistry
https://www.readbyqxmd.com/read/29134404/curcumin-mediated-anti-microbial-photodynamic-therapy-against-candida-dubliniensis-biofilms
#7
Paula Volpato Sanitá, Ana Cláudia Pavarina, Lívia Nordi Dovigo, Ana Paula Dias Ribeiro, Mariana Carvalho Andrade, Ewerton Garcia de Oliveira Mima
The purpose of this study was to evaluate the effectiveness of anti-microbial photodynamic therapy (aPDT) mediated by curcumin (Cur) associated with LED light against biofilms of Candida dubliniensis, and further, investigate cellular uptake and drug penetration through the biofilms under confocal laser scanning microscopy (CLSM). Four C. dubliniensis strains were tested: three clinical isolates from HIV-positive patients and one reference strain (CBS 7987). Biofilms were treated with three Cur concentrations (20...
November 13, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29128711/polysubstance-use-profiles-among-electronic-dance-music-party-attendees-in-new-york-city-and-their-relation-to-use-of-new-psychoactive-substances
#8
Fermín Fernández-Calderón, Charles M Cleland, Joseph J Palamar
BACKGROUND: Electronic Dance Music (EDM) party attendees are often polysubstance users and are at high risk for use of new psychoactive substances (NPS). We sought to identify patterns of use of common illegal drugs among EDM party attendees, sociodemographic correlates, and use of NPS as a function of patterns of use of more common drugs to inform prevention and harm reduction. METHOD: Using time-space-sampling, 1045 individuals aged 18-40 were surveyed entering EDM parties in New York City...
November 4, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/29125622/fermentation-cover-brine-reformulation-for-cucumber-processing-with-low-salt-to-reduce-bloater-defect
#9
Y Zhai, I M Pérez-Díaz
Reformulation of calcium chloride (CaCl2 ) cover brine for cucumber fermentation was explored as a mean to minimize the incidence of bloater defect. This study particularly focused on cover brine supplementation with calcium hydroxide (Ca[OH]2 ), sodium chloride (NaCl), and acids to enhance buffer capacity, inhibit the indigenous carbon dioxide (CO2 )- producing microbiota, and decrease the solubility of the gas. The influence of the cover brine formulations tested, on the cucumber fermentation microbiota, biochemistry, CO2 production, and bloating defect was studied using metagenetics, HPLC analysis, a portable gas analyzer and bloater index, respectively...
November 10, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29125198/redox-active-ligand-assisted-two-electron-oxidative-addition-to-gallium-ii
#10
Igor L Fedushkin, Vladimir Dodonov, Alexandra Skatova, Vladimir Sokolov, Alexander Piskunov, Georgii Fukin
The reaction of digallane (dpp-bian)Ga-Ga(dpp-bian) (2) (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) with allylchloride (AllCl) proceeds as the two-electron oxidative addition and affords paramagnetic complexes (dpp-bian)Ga(1-All)Cl (3) and (dpp-bian)(Cl)Ga-Ga(Cl)(dpp-bian) (4). Treatment of complex 4 with pyridine induces intramolecular redox-process resulting diamagnetic (dpp-bian)Ga(Py)Cl (5). With allylbromide complex 2 gives metal- and ligand-centered addition products, (dpp-bian)Ga(1-All)Br (6) and (dpp-bian-All)(Br)Ga-Ga(Br)(dpp-bian-All) (7)...
November 10, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29124326/impact-of-two-arbuscular-mycorrhizal-fungi-on-arundo-donax-l-response-to-salt-stress
#11
Susanna Pollastri, Andreas Savvides, Massimo Pesando, Erica Lumini, Maria Grazia Volpe, Elif Aylin Ozudogru, Antonella Faccio, Fausta De Cunzo, Marco Michelozzi, Maurizio Lambardi, Vasileios Fotopoulos, Francesco Loreto, Mauro Centritto, Raffaella Balestrini
AM symbiosis did not strongly affect Arundo donax performances under salt stress, although differences in the plants inoculated with two different fungi were recorded. The mechanisms at the basis of the improved tolerance to abiotic stresses by arbuscular mycorrhizal (AM) fungi have been investigated mainly focusing on food crops. In this work, the potential impact of AM symbiosis on the performance of a bioenergy crop, Arundo donax, under saline conditions was considered. Specifically, we tried to understand whether AM symbiosis helps this fast-growing plant, often widespread in marginal soils, withstand salt...
November 9, 2017: Planta
https://www.readbyqxmd.com/read/29120956/protein-kinase-c%C3%AE-deletion-causes-hypotension-and-decreased-vascular-contractility
#12
Brandi M Wynne, Cameron G McCarthy, Theodora Szasz, Patrick A Molina, Arlene B Chapman, R Clinton Webb, Janet D Klein, Robert S Hoover
AIM: Protein kinase Cα (PKCα) is a critical regulator of multiple cell signaling pathways including gene transcription, posttranslation modifications and activation/inhibition of many signaling kinases. In regards to the control of blood pressure, PKCα causes increased vascular smooth muscle contractility, while reducing cardiac contractility. In addition, PKCα has been shown to modulate nephron ion transport. However, the role of PKCα in modulating mean arterial pressure (MAP) has not been investigated...
November 8, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29120499/evolution-of-the-subsurface-k-rich-brines-in-the-triassic-carbonates-in-the-sichuan-basin-of-china
#13
Xun Zhou, Xiaocui Wang, Jiajun Han, Qin Cao, Changlong Jiang, Juan Guo, Haiyan Zhou
Subsurface K-rich brines are important mineral resources for fertilizer production while the evolution of such brines is poorly documented. In the Sichuan Basin in southwest China, they are found mainly in the Middle and Lower Triassic marine carbonate aquifers. Total dissolved solids of the brines range from 176 to 378 g/L and K concentrations, from 1.9 to 53.3 g/L. We found that the brines are mainly of Cl-Na type, while Ba is absent in the brines. Comparison of the brine samples with both the trajectories of ions and the newly proposed trajectories of ion ratios of evaporated seawater suggests that the brines are enriched in Ca, Sr, Li, and I, depleted in SO4 and Mg, and neither enriched nor depleted in Cl and Na...
November 9, 2017: Ground Water
https://www.readbyqxmd.com/read/29120354/trans-plasma-membrane-electron-transport-and-ascorbate-efflux-by-skeletal-muscle
#14
Amanda M Eccardt, Thomas P Bell, Lyn Mattathil, Rohan Prasad, Shannon C Kelly, Jonathan S Fisher
Trans-plasma membrane electron transport (tPMET) and the antioxidant roles of ascorbate reportedly play a role in protection of cells from damage by reactive oxygen species, which have been implicated in causing metabolic dysfunction such as insulin resistance. Skeletal muscle comprises the largest whole-body organ fraction suggesting a potential role of tPMET and ascorbate export as a major source of extracellular antioxidant. We hypothesized that skeletal muscle is capable of tPMET and ascorbate efflux. To measure these processes, we assayed the ability of cultured muscle cells, satellite cells, and isolated extensor digitorum longus (EDL) and soleus (SOL) to reduce two extracellular electron acceptors, water soluble tetrazolium salt 1 (WST-1), and dichlorophenolindophenol (DPIP)...
November 9, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29114655/a-modular-approach-to-carbene-stabilized-diphosphorus-species
#15
Adinarayana Doddi, Dirk Bockfeld, Marc-Kevin Zaretzke, Christian Kleeberg, Thomas Bannenberg, Matthias Tamm
Heteroleptic N-heterocyclic dicarbene-diphosphorus species were prepared by reaction of the carbene-phosphinidene adduct (IPr)PSiMe3 (1, IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) with the carbene-phosphorus trichloride adduct (IMes)PCl3 (2, IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene), which furnished the dichloride [(IPr)PPCl(IMes)]Cl (3). Reduction of 3 with potassium graphite (KC8) afforded [(IPr)PP(IMes)] (4). The corresponding radical cation [(IPr)PP(IMes)]˙(+) (5˙(+)) is isolated as [5]PF6 by reaction of 4 with ferrocenium hexafluorophosphate, whereas complexes containing the corresponding dication [(IPr)PP(IMes)](2+) (6(2+)) can be isolated as the gallate and borate salts [6](GaCl4)2 and [6](BAr(F))2 by chloride abstraction from 3 with GaCl3 or sodium tetrakis[bis(3,5-trifluoromethyl)phenyl]borate (NaBAr(F)), respectively...
November 8, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29113921/antihypertensive-responses-of-vasoactive-androgens-in-an-in-vivo-experimental-model-of-preeclampsia
#16
Mercedes Perusquía, Andrea E Hanson, Claudia M Meza, Cris Kubli, Nieves Herrera, John N Stallone
Dehydroepiandrosterone (DHEA), testosterone (TES) and its 5-reduced metabolites induce a nongenomic vasorelaxation in several vascular beds of mammals; similarly these hormones produce systemic hypotensive and antihypertensive responses in normotensive and hypertensive male rats. Thus, it was hypothesized that the antihypertensive response of androgens, whose levels are elevated during gestation, protect against gestational hypertension. An animal model of preeclampsia was induced in female Wistar rats using DOCA-salt-treated pregnant (PT) and normal pregnant (NP) rats...
November 4, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29112926/fabrication-of-mn3o4-carbon-nanotube-composites-with-high-areal-capacitance-using-cationic-and-anionic-dispersants
#17
M S Ata, J Milne, I Zhitomirsky
Mn3O4-multiwalled carbon nanotube (MWCNT) electrodes for supercapacitors with high active mass loadings have been fabricated with the goal of achieving a high area normalized capacitance (CS) and enhanced capacitance retention at high charge-discharge rates. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt P(SSA-MA) was used as a charging and dispersing agent for the fabrication of Mn3O4. The unique bonding properties of the MA monomers allowed efficient P(SSA-MA) adsorption on Mn3O4, whereas SSA monomers imparted a negative charge...
October 31, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29112421/monometallic-and-bimetallic-platinum-complexes-with-fluorinated-%C3%AE-diketiminate-ligands
#18
Ku Sun Choung, Mohammad Din Islam, Richard W Guo, Thomas S Teets
Presented here are complexes of two different fluorinated β-diketiminate (NacNac) ligands with cyclometalated platinum. Reaction of the cyclometalated platinum dimers [Pt(C^N)(μ-X)]2 [C^N = 2-phenylpyridine (ppy), 2-(2,4-difluorophenyl)pyridine (F2ppy); X = Cl, Br] with lithium salts of backbone-fluorinated β-diketiminate ligands produces two structure types, depending on the temperature of the reaction. At milder temperatures (<80 °C), the major product is an unusual halide-bridged diplatinum complex, demonstrating a unique NacNac binding mode bridging the two platinum centers...
November 7, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29111517/copper-ii-and-gold-iii-mediated-cyclization-of-a-thiourea-to-a-substituted-2-aminobenzothiazole
#19
Zachary W Schroeder, L K Hiscock, Louise Nicole Dawe
Benzothiazole derivatives are a class of privileged molecules due to their biological activity and pharmaceutical applications. One route to these molecules is via intramolecular cyclization of thioureas to form substituted 2-aminobenzothiazoles, but this often requires harsh conditions or employs expensive metal catalysts. Herein, the copper(II)- and gold(III)-mediated cyclizations of thioureas to substituted 2-aminobenzothiazoles are reported. The single-crystal X-ray structures of the thiourea N-(3-methoxyphenyl)-N'-(pyridin-2-yl)thiourea, C13H13N3OS, and the intermediate metal complexes aquabis[5-methoxy-N-(pyridin-2-yl-κN)-1,3-benzothiazol-2-amine-κN(3)]copper(II) dinitrate, [Cu(C13H11N3OS)2(H2O)](NO3)2, and bis{2-[(5-methoxy-1,3-benzothiazol-2-yl)amino]pyridin-1-ium} dichloridogold(I) chloride monohydrate, (C13H12N3OS)2[AuCl2]Cl·H2O, are reported...
November 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/29108723/cardiovascular-respiratory-and-related-disorders-key-messages-from-disease-control-priorities-3rd-edition
#20
REVIEW
Dorairaj Prabhakaran, Shuchi Anand, David Watkins, Thomas Gaziano, Yangfeng Wu, Jean Claude Mbanya, Rachel Nugent
Cardiovascular, respiratory, and related disorders (CVRDs) are the leading causes of adult death worldwide, and substantial inequalities in care of patients with CVRDs exist between countries of high income and countries of low and middle income. Based on current trends, the UN Sustainable Development Goal to reduce premature mortality due to CVRDs by a third by 2030 will be challenging for many countries of low and middle income. We did systematic literature reviews of effectiveness and cost-effectiveness to identify priority interventions...
November 3, 2017: Lancet
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