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https://www.readbyqxmd.com/read/28092766/effect-of-multi-walled-carbon-nanotubes-on-phytotoxicity-of-sediments-contaminated-by-phenanthrene-and-cadmium
#1
Biao Song, Guangming Zeng, Jilai Gong, Peng Zhang, Jiaqin Deng, Canhui Deng, Jin Yan, Piao Xu, Cui Lai, Chen Zhang, Min Cheng
To implement effective control and abatement programs for contaminants accumulating in sediments, strategies are needed for evaluating the quality of amended sediments. In this study, phytotoxicity of the sediments contaminated by cadmium and phenanthrene was evaluated after in situ remediation with multi-walled carbon nanotubes (MWCNTs) as adsorbents. Adsorption experiments and measurement of aqueous concentrations of the contaminants in overlying water were used to investigate the remediation effectiveness from physical and chemical aspects...
January 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28091740/controlling-eutrophication-in-a-mediterranean-shallow-reservoir-by-phosphorus-loading-reduction-the-need-for-an-integrated-management-approach
#2
Mikel Zaragüeta, Pablo Acebes
Increased nutrient enrichment in Mediterranean standing waters has enhanced the risk of being affected by cyanobacterial blooms. Because phosphorus abatement is shaped as a crucial strategy for controlling eutrophication, this study introduces a structural thinking, experiential learning laboratory with animation dynamic model elaborated for Cazalegas Reservoir (Spain) to assess the feasibility of implementing a set of internal and external control measures and hydromorphological adjustments to meet the goal of oligotrophication...
January 13, 2017: Environmental Management
https://www.readbyqxmd.com/read/28086830/sigma-2-receptor-agonist-derivatives-of-1-cyclohexyl-4-3-5-methoxy-1-2-3-4-tetrahydronaphthalen-1-yl-propyl-piperazine-pb28-induce-cell-death-via-mitochondrial-superoxide-production-and-caspase-activation-in-pancreatic-cancer
#3
Maria Laura Pati, John R Hornick, Mauro Niso, Francesco Berardi, Dirk Spitzer, Carmen Abate, William Hawkins
BACKGROUND: Despite considerable efforts by scientific research, pancreatic cancer is the fourth leading cause of cancer related mortalities. Sigma-2 receptors, which are overexpressed in several tumors, represent promising targets for triggering selective pancreatic cancer cells death. METHODS: We selected five differently structured high-affinity sigma-2 ligands (PB28, PB183, PB221, F281 and PB282) to study how they affect the viability of diverse pancreatic cancer cells (human cell lines BxPC3, AsPC1, Mia PaCa-2, and Panc1 and mouse Panc-02, KCKO and KP-02) and how this is reflected in vivo in a tumor model...
January 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28080219/adipose-tissue-insulin-resistance-in-gestational-diabetes
#4
Batbayar Tumurbaatar, Aaron T Poole, Gayle Olson, Michel Makhlouf, Hanaa S Sallam, Shwetha Thukuntla, Sucharitha Kankanala, Obos Ekhaese, Guillermo Gomez, Manisha Chandalia, Nicola Abate
BACKGROUND: Gestational diabetes mellitus (GDM) is a metabolic disorder characterized by insulin resistance (IR) and altered glucose-lipid metabolism. We propose that ectonucleotide pyrophosphate phosphodiesterase-1 (ENPP1), a protein known to induce adipocyte IR, is a determinant of GDM. Our objective was to study ENPP1 expression in adipose tissue (AT) of obese pregnant women with or without GDM, as well as glucose tolerance in pregnant transgenic (Tg) mice with AT-specific overexpression of human ENPP1...
January 12, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28063087/antimicrobial-activity-and-acute-toxicity-of-ozonated-lomefloxacin-solution
#5
Amanda Marchi Duarte de Oliveira, Milena Guedes Maniero, Caio Rodrigues-Silva, José Roberto Guimarães
Lomefloxacin (LOM) is a synthetic antimicrobial from the fluoroquinolone family (FQ) used as a veterinary and human drug. Once in the environment, LOM may pose a risk to aquatic and terrestrial microorganisms due to its antimicrobial activity. This study evaluated the effect of ozonation of LOM (500 μg L(-1)), the residual antimicrobial activity against Escherichia coli and acute toxicity against Vibrio fischeri. In addition, degradation products were investigated by UHPLC-MS/MS and proposed. Ozonation was carried out varying the applied ozone dose from 0 to 54...
January 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28062691/activating-mutations-and-translocations-in-the-guanine-exchange-factor-vav1-in-peripheral-t-cell-lymphomas
#6
Francesco Abate, Ana C da Silva-Almeida, Sakellarios Zairis, Javier Robles-Valero, Lucile Couronne, Hossein Khiabanian, S Aidan Quinn, Mi-Yeon Kim, Maria Antonella Laginestra, Christine Kim, Danilo Fiore, Govind Bhagat, Miguel Angel Piris, Elias Campo, Izidore S Lossos, Olivier A Bernard, Giorgio Inghirami, Stefano Pileri, Xosé R Bustelo, Raul Rabadan, Adolfo A Ferrando, Teresa Palomero
Peripheral T-cell lymphomas (PTCLs) are a heterogeneous group of non-Hodgkin lymphomas frequently associated with poor prognosis and for which genetic mechanisms of transformation remain incompletely understood. Using RNA sequencing and targeted sequencing, here we identify a recurrent in-frame deletion (VAV1 Δ778-786) generated by a focal deletion-driven alternative splicing mechanism as well as novel VAV1 gene fusions (VAV1-THAP4, VAV1-MYO1F, and VAV1-S100A7) in PTCL. Mechanistically these genetic lesions result in increased activation of VAV1 catalytic-dependent (MAPK, JNK) and non-catalytic-dependent (nuclear factor of activated T cells, NFAT) VAV1 effector pathways...
January 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28057041/rifampicin-resistance-pattern-of-mycobacterium-tuberculosis-and-associated-factors-among-presumptive-tuberculosis-patients-referred-to-debre-markos-referral-hospital-ethiopia-a-cross-sectional-study
#7
Wondemagegn Mulu, Bayeh Abera, Mulat Yimer, Tadesse Hailu, Haimanot Ayele, Dereje Abate
BACKGROUND: Prevailing data on rifampicin-resistant M. tuberculosis is essential for early management of MDR-TB. Therefore, this study was conducted to determine the prevalence of rifampicin-resistant Mycobacterium tuberculosis and associated factors among presumptive TB cases in Debre Markos Referral Hospital, Ethiopia. METHODS: A cross-sectional study was conducted from September 2014 to March 2015. Detection of M. tuberculosis and resistance to rifampicin was performed using Gene Xpert MTB/RIF assay...
January 3, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28055018/sumoylation-deficient-prdx6-gains-protective-function-by-amplifying-enzymatic-activity-and-stability-and-escapes-oxidative-stress-induced-aberrant-sumoylation
#8
Bhavana Chhunchha, Eri Kubo, Nigar Fatma, Dhirendra P Singh
Aberrant Sumoylation of protein(s) in response to oxidative stress or during aging is known to be involved in etiopathogenesis of many diseases. Upon oxidative stress, Peroxiredoxin (Prdx) 6 is aberrantly Sumoylated by Sumo1, resulting in loss of functions and cell death. We identified lysines (K) 122 and 142 as the major Sumo1 conjugation sites in Prdx6. Intriguingly, the mutant Prdx6 K122/142 R (arginine) gained protective efficacy, increasing in abundance and promoting glutathione (GSH) peroxidase and acidic calcium-independent phospholipase A2 (aiPLA2) activities...
January 5, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28052606/optn-srtr-2015-annual-data-report-pancreas
#9
R Kandaswamy, P G Stock, S K Gustafson, M A Skeans, M A Curry, M A Prentice, A K Israni, J J Snyder, B L Kasiske
The number of pancreas transplants performed in the United States stabilized over the last 3 years after nearly a decade of steady decline. Numbers of new additions to the list also stabilized during the same period. Notably, the persistent decline in pancreas after kidney transplants also seems to have abated, at least for now. The first full year of data after implementation of the new pancreas allocation system revealed no change in the distribution of organs between simultaneous pancreas-kidney (SPK) transplant and pancreas transplant alone...
January 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28052177/battlefield-acupuncture-is-it-ready-for-widespread-dissemination
#10
Daniel G Federman, Craig G Gunderson
The use of prescription opioids for chronic pain has increased markedly within the past few decades; thus, death rates associated with opioid overdoses have increased dramatically. Nonopioid pharmacologic therapies also are associated with adverse effects. Other pain-abatement modalities such as acupuncture may be useful in the treatment of several painful conditions. Battlefield acupuncture is being promulgated as a potential low-risk, nonpharmacological therapy for pain. In this narrative review we examine the published literature to support battlefield acupuncture...
January 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28051104/sequence-specific-sorting-of-dna-molecules-with-facs-using-3dpcr
#11
David J Sukovich, Shea T Lance, Adam R Abate
Genetic heterogeneity is an important feature of many biological systems, but introduces technical challenges to their characterization. Even with the best modern instruments, only a small fraction of DNA molecules present in a sample can be read, and they are recovered in the form of short, hundred-base reads. In this paper, we introduce 3dPCR, a method to sort DNA molecules with sequence specificity. 3dPCR allows heterogeneous populations of DNA to be sorted to recover long targets for deep sequencing. It is valuable whenever a target sequence is rare in a mixed population, such as for characterizing mutations in heterogeneous cancer cell populations or identifying cells containing a specific genetic sequence or infected with a target virus...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28045491/trends-in-adhesion-energies-of-metal-nanoparticles-on-oxide-surfaces-understanding-support-effects-in-catalysis-and-nanotechnology
#12
Stephanie L Hemmingson, Charles T Campbell
Nanoparticles on surfaces are ubiquitous in nanotechnologies, especially in catalysis, where metal nanoparticles anchored to oxide supports are widely used to produce and use fuels and chemicals, and in pollution abatement. We show that for hemispherical metal particles of the same diameter, D, the chemical potentials of the metal atoms in the particles (μM) differ between two supports by approximately -2(Eadh,A - Eadh,B)Vm/D, where Ead,i is the adhesion energy between the metal and support i, and Vm is the molar volume of the bulk metal...
January 3, 2017: ACS Nano
https://www.readbyqxmd.com/read/28045000/geometric-constraints-on-phase-coexistence-in-vanadium-dioxide-single-crystals
#13
Christina L McGahan, Sampath Gamage, Jiran Liang, Brendan Cross, Robert Marvel, Richard Haglund, Yohannes Abate
The appearance of stripe phases is a characteristic signature of strongly correlated quantum materials, and its origin in phase-changing materials has only recently been recognized as the result of the delicate balance between atomic and mesoscopic materials properties. A vanadium dioxide (VO<sub>2</sub>) single crystal is one such strongly correlated material with stripe phases. Infrared nano-imaging on low-aspect-ratio, single-crystal VO<sub>2</sub> microbeams decorated with resonant plasmonic nanoantennas reveals a novel herringbone pattern of coexisting metallic and insulating domains intercepted and altered by ferroelastic domains, unlike previous reports on high-aspect-ratio VO<sub>2</sub> crystals where the coexisting metal/insulator domains appear as alternating stripe phases perpendicular to the growth axis...
January 3, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28042468/achieving-nano-gold-stability-through-rational-design
#14
Dean H Barrett, Michael S Scurrell, Cristiane B Rodella, Beatriz Diaz, David G Billing, Paul J Franklyn
When Au is subdivided to the nanoscale its reactivity changes from an inert nature to one of incredible reactivity which is not replicated by other catalysts. When dispersed onto metal oxides such as TiO2, nano-Au has shown high reactivities for a multitude of reduction and oxidation reactions of industrial importance with potential and current uses such as, CO oxidation, NO x reduction, purification of hydrogen for fuel cells, water gas shift reactions, abatement of volatile organic compounds (VOC's) as well as pollution and emission control systems such as autocatalysts...
November 18, 2016: Chemical Science
https://www.readbyqxmd.com/read/28042018/pcr-activated-cell-sorting-as-a-general-cultivation-free-method-for-high-throughput-identification-and-enrichment-of-virus-hosts
#15
Shaun W Lim, Shea T Lance, Kenneth M Stedman, Adam R Abate
Characterizing virus-host relationships is critical for understanding the impact of a virus on an ecosystem, but is challenging with existing techniques, particularly for uncultivable species. We present a general, cultivation-free approach for identifying phage-associated bacterial cells. Using PCR-activated cell sorting, we interrogate millions of individual bacteria for the presence of specific phage nucleic acids. If the nucleic acids are present, the bacteria are recovered via sorting and their genomes analyzed...
December 29, 2016: Journal of Virological Methods
https://www.readbyqxmd.com/read/28041728/associations-between-housing-and-management-practices-and-the-prevalence-of-lameness-hock-lesions-and-thin-cows-on-us-dairy-operations
#16
A E Adams, J E Lombard, C P Fossler, I N Román-Muñiz, C A Kopral
The objective of this study was to determine the association among different housing and management practices on the prevalence of lameness, hock lesions, and thin cows on US dairy operations. This study was conducted as part of the National Animal Health Monitoring System's Dairy 2014 study, which included dairy operations in 17 states. Size categories were assigned as follows: small (30-99 cows), medium (100-499 cows), and large (≥500 cows). Trained assessors visited 191 dairy operations from March through July 2014 and recorded locomotion and hock scores (on a 3-point scale), and the number of thin cows (body condition score ≤2...
December 29, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28041693/nitrogen-containing-organic-compounds-origins-toxicity-and-conditions-of-their-photocatalytic-mineralization-over-tio2
#17
REVIEW
Drissa Bamba, Mariame Coulibaly, Didier Robert
Sustainable water management remains a global concern to meet the food needs of industrial and agricultural activities. Therefore, pollution abatement techniques, cheap and environmentally, are highly desired and recommended. The present review is devoted to the origin and the toxicity of nitrogen-containing organic compounds in water. The progress made in removing these pollutants, in recent years, is addressed. However, a prominent place is given to the photocatalytic degradation process using the TiO2 as a semiconductor, the conditions for good mineralization and especially the factors influencing it...
December 29, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28034767/interruption-of-the-transmission-of-onchocerca-volvulus-in-the-kashoya-kitomi-focus-western-uganda-by-long-term-ivermectin-treatment-and-elimination-of-the-vector-simulium-neavei-by-larviciding
#18
T Lakwo, R Garms, J Wamani, E M Tukahebwa, E Byamukama, A W Onapa, E Tukesiga, J Katamanywa, S Begumisa, P Habomugisha, D Oguttu, E Byamukama, F Richards, T R Unnasch, M Katabarwa
Uganda is the only country in sub-Saharan Africa whose onchocerciasis elimination programme extensively uses vector control and biannual treatment with ivermectin. The purpose of this study was to assess the impact of combined strategies on interrupting onchocerciasis transmission in the Kashoya-Kitomi focus. Mass Drug Administration annually (13 years) followed by biannual treatments (6 years) and ground larviciding (36 cycles in 3 years) with temephos (Abate(®), EC500) against Simulium neavei were conducted...
December 26, 2016: Acta Tropica
https://www.readbyqxmd.com/read/28034757/vancomycin-pre-treatment-impairs-tissue-healing-in-experimental-colitis-importance-of-innate-lymphoid-cells
#19
Di Zhao, Chenwen Cai, Qing Zheng, Shuang Jin, Dongjuan Song, Jun Shen, Zhihua Ran
BACKGROUND AND AIMS: The interplay between luminal microbes and innate immunity during colonic epithelial repair has been well noted. At the same time, antibiotic has widely been used during flare-ups of ulcerative colitis. The possible effects of luminal microbiota disruption caused by antibiotics usage on epithelial repairing have been scarcely discussed. Innate lymphoid cells (ILCs) embedded in the lamina propria can be modulated by gut microbes, resulting in altered colonic IL-22/pSTAT3 levels, which is considered a prominent molecular axis in tissue repairing after epithelium damage...
December 27, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28031434/testing-for-cmv-in-pregnancy
#20
Alda Saldan, Gabriella Forner, Carlo Mengoli, Nadia Gussetti, Giorgio Palù, Davide Abate
Congenital CMV-infection (cCMV) represents a relevant cause of deafness and neurological damage in newborns. Intrauterine CMV transmission might result after primary or non-primary infections, though at different rates (30% vs 0.2%, respectively). At present prenatal diagnosis of CMV infection is mainly based on maternal serology, detection of CMV-DNA in amniotic fluid and fetal blood, and US and MRI imaging. Recent evidences suggest that cCMV may be an immune-mediated disease and that evaluation of humoral and especially T-cell immunity may improve the overall prenatal diagnosis...
December 28, 2016: Journal of Clinical Microbiology
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