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https://www.readbyqxmd.com/read/28549371/theoretical-analysis-of-coupled-effects-of-microbe-and-root-architecture-on-methane-oxidation-in-vegetated-landfill-covers
#1
S Feng, A K Leung, C W W Ng, H W Liu
Reduction of soil moisture by plant root-water uptake could improve soil aeration for microbial aerobic methane oxidation (MAMO) in a landfill cover, but excessive soil moisture removal could suppress microbial activity due to water shortage. Existing models ignore the coupled microbe-vegetation interaction. It is thus not known whether the presence of plants is beneficial or adverse to MAMO. This study proposes a newly-improved theoretical model that couples the effects of root-water uptake and microbial activity for capturing water-gas flow and MAMO in unsaturated soils...
May 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28549369/safety-analysis-of-occupational-exposure-of-healthcare-workers-to-residual-contaminations-of-cytotoxic-drugs-using-fmeca-security-approach
#2
Laetitia Minh Mai Le, Delphine Reitter, Sophie He, Franck Té Bonle, Amélie Launois, Diane Martinez, Patrice Prognon, Eric Caudron
Handling cytotoxic drugs is associated with chemical contamination of workplace surfaces. The potential mutagenic, teratogenic and oncogenic properties of those drugs create a risk of occupational exposure for healthcare workers, from reception of starting materials to the preparation and administration of cytotoxic therapies. The Security Failure Mode Effects and Criticality Analysis (FMECA) was used as a proactive method to assess the risks involved in the chemotherapy compounding process. FMECA was carried out by a multidisciplinary team from 2011 to 2016...
May 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28549360/-intercarpal-fusion-as-a-salvage-procedure-in-kienb%C3%A3-ck-disease
#3
M Puig-Zentella, J A Rivas-Montero, E Hernández-Méndez-Villamil, A J Espinosa-Gutiérrez
INTRODUCTION: Functional results of four surgical techniques to resolve the IIIB-IV Litchman's stage of the Kienböck disease were analyzed. We observed the evolution from 2000 to 2015. MATERIAL AND METHODS: Transversal retrospective study of 33 patients treated with different surgical techniques and evaluated with Quick-DASH scale, dynamometer and EVA. RESULTS: Less functional limitation was found in the patients who underwent the intercarpal fusion with or without neurotomy of the posterior interosseous...
November 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28549352/eye-abduction-reduces-but-does-not-eliminate-competition-in-the-oculomotor-system
#4
Paul J Boon, Jan Theeuwes, Artem V Belopolsky
Although it is well established that there is a tight coupling between covert attention and the eye movement system there is an ongoing controversy whether this relationship is functional. Previous studies demonstrated that disrupting the ability to execute an eye movement interferes with the allocation of covert attention. One technique that prevents the execution of an eye movement involves the abduction of the eye in the orbit while presenting the stimuli outside of the effective oculomotor range (Craighero, Nascimben, & Fadiga, 2004)...
May 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28549333/endoplasmic-reticulum-er-stress-and-camp-pka-pathway-mediated-zn-induced-hepatic-lipolysis
#5
Yu-Feng Song, Christer Hogstrand, Chuan-Chuan Wei, Kun Wu, Ya-Xiong Pan, Zhi Luo
The present study was performed to determine the effect of Zn exposure influencing endoplasmic reticulum (ER) stress, explore the underlying molecular mechanism of Zn-induced hepatic lipolysis in a fish species of significance for aquaculture, yellow catfish Pelteobagrus fulvidraco. We found that waterborne Zn exposure evoked ER stress and unfolded protein response (UPR), and activated cAMP/PKA pathway, and up-regulated hepatic lipolysis. The increase in ER stress and lipolysis were associated with activation of cAMP/PKA signaling pathway...
May 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28549307/thymoquinone-protects-against-the-sepsis-induced-mortality-mesenteric-hypoperfusion-aortic-dysfunction-and-multiple-organ-damage-in-rats
#6
Erdem Kamil Ozer, Mustafa Tugrul Goktas, Aysun Toker, Sultan Pehlivan, Hulagu Bariskaner, Ceyhan Ugurluoglu, Alper Bektas Iskit
BACKGROUND: Thymoquinone (TQ) is a potent cytoprotective, antioxidant and anti-inflammatory agent. We aimed to investigate the possible protective effects of TQ on survival, mesenteric artery blood flow (MABF), vascular reactivity, oxidative and inflammatory injuries in a murine sepsis model induced by cecal ligation and puncture (CLP). METHODS: Wistar rats were divided into the following four groups: Sham, CLP, Sham+TQ and CLP+TQ. TQ (1mg/kg/day) or vehicle (dimethyl sulfoxide, 1mL/kg/day) was intraperitoneally injected for 3 days...
March 24, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28549300/evaluation-of-the-in-vitro-effect-of-boldo-and-meadowsweet-plant-extracts-on-the-expression-of-antimicrobial-peptides-and-inflammatory-markers-in-canine-keratinocytes
#7
Domenico Santoro, Kim Ahrens, Ryan Vesny, Christelle Navarro, Hugues Gatto, Rosanna Marsella
Dogs with allergies are prone to skin infections and treatments/preventatives to boost innate immune-defenses are beneficial. The aim of this study was to evaluate the effects of Boldo and Meadowsweet extracts on the expression of β-defensins (cBD), cathelicidin (cCath), and pro-inflammatory cytokines in canine keratinocyte. This study had two phases. Phase I evaluated mRNA expression of cBD103 and cCath, and secretion of cCath, IL-8 and TNF-α by keratinocytes harvested from healthy (n=5) and atopic (n=5) age-matched beagles exposed to Boldo (2% to 0...
May 17, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28549270/the-effects-of-early-life-adversity-on-the-immune-system
#8
REVIEW
Martha M C Elwenspoek, Annette Kuehn, Claude P Muller, Jonathan D Turner
Early life adversity (ELA) is associated with a higher risk for diseases in adulthood. Although the pathophysiological effects of ELA are varied, there may be a unifying role for the immune system in all of the long-term pathologies such as chronic inflammatory disorders (autoimmune diseases, allergy, and asthma). Recently, significant efforts have been made to elucidate the long-term effects ELA has on immune function, as well as the mechanisms underlying these immune changes. In this review, we focus on data from human studies investigating immune parameters in relation to post-natal adverse experiences...
May 17, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28549264/effectiveness-of-family-group-conferencing-in-preventing-repeat-referrals-to-child-protective-services-and-out-of-home-placements
#9
Dana M Hollinshead, Tyler W Corwin, Erin J Maher, Lisa Merkel-Holguin, Heather Allan, John D Fluke
Rigorous research on the efficacy of family group conferencing is rare. This randomized control trial study used an intent-to-treat approach to examine whether a referral to a family group conference (FGC) was associated with re-referrals, substantiated re-referrals, or out-of-home placements among child welfare-involved families receiving in-home services. We found no significant associations between treatment and control group assignment and the three outcomes for the sample as a whole. However, families with more children had higher odds of a re-referral and a substantiated re-referral, families with more than one parent had higher odds of re-referral, and families where a substance abuse services referral was noted had higher odds of out-of-home placement...
May 23, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28549221/preventing-underfeeding-and-overfeeding-a-clinician-s-guide-to-the-acquisition-and-implementation-of-indirect-calorimetry
#10
Amy K Ladd, Heather E Skillman, Matthew A Haemer, Peter M Mourani
BACKGROUND: In critically ill patients, indirect calorimetry (IC) is the gold standard to determine energy needs, as the use of predictive equations can result in underfeeding or overfeeding. The aim of this quality improvement (QI) initiative was to describe the rationale for and implementation of a process to target energy provision according to IC measurements in a tertiary academic medical center pediatric intensive care unit (PICU). MATERIALS AND METHODS: To justify the purchase of an indirect calorimeter for clinical use, a needs assessment was conducted, followed by a training and implementation period...
May 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28549213/binding-of-copper-and-cisplatin-to-atox1-is-mediated-by-glutathione-through-the-formation-of-metal-sulfur-clusters
#11
Nataliya V Dolgova, Corey Yu, John P Cvitkovic, Miroslav Hodak, Kurt Nienaber, Kelly Lynn Summers, Julien Cotelesage, Jerzy Bernholc, George A Kaminski, Ingrid J Pickering, Graham N George, Oleg Y Dmitriev
Copper is an essential nutrient required for many biological processes involved in primary metabolism, but free cop-per is toxic due to its ability to catalyze formation of free radicals. To prevent toxic effects, in the cell copper is bound to proteins and low molecular weight compounds, such as glutathione, at all times. The widely used chemotherapy agent cisplatin is known to bind to copper-transporting proteins, including copper chaperone Atox1. Cisplatin interac-tions with Atox1 and other copper transporters are linked to cancer resistance to platinum-based chemotherapy...
May 26, 2017: Biochemistry
https://www.readbyqxmd.com/read/28549190/newborn-care-practices-and-health-seeking-behavior-in-rural-eastern-ethiopia-a-community-based-study
#12
Betemariam Gebre, Sibhatu Biadgilign, Zinaw Taddese, Kebede Deribe, Tsigereda Legesse, Meftuh Omar
Background: Most of the newborn deaths in developing countries occur at home. Up to two-thirds of these deaths would have been prevented if mothers and newborns had received known and effective interventions. The objective of this study is to determine newborn-care practices and health-seeking behavior in rural Eastern Ethiopia. Methods: A community-based cross-sectional study was conducted in Adadle district, Ethiopian Somali Regional State. A multi-stage random sampling technique was applied...
May 26, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28549174/phosphorylated-sirt1-associates-with-replication-origins-to-prevent-excess-replication-initiation-and-preserve-genomic-stability
#13
Koichi Utani, Haiqing Fu, Sang-Min Jang, Anna B Marks, Owen K Smith, Ya Zhang, Christophe E Redon, Noriaki Shimizu, Mirit I Aladjem
Chromatin structure affects DNA replication patterns, but the role of specific chromatin modifiers in regulating the replication process is yet unclear. We report that phosphorylation of the human SIRT1 deacetylase on Threonine 530 (T530-pSIRT1) modulates DNA synthesis. T530-pSIRT1 associates with replication origins and inhibits replication from a group of 'dormant' potential replication origins, which initiate replication only when cells are subject to replication stress. Although both active and dormant origins bind T530-pSIRT1, active origins are distinguished from dormant origins by their unique association with an open chromatin mark, histone H3 methylated on lysine 4...
May 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28549172/orrm5-an-rna-recognition-motif-containing-protein-has-a-unique-effect-on-mitochondrial-rna-editing
#14
Xiaowen Shi, Benoit Castandet, Arnaud Germain, Maureen R Hanson, Stéphane Bentolila
Plants have an RNA editing mechanism that prevents deleterious organelle mutations from resulting in impaired proteins. A typical flowering plant modifies about 40 cytidines in chloroplast transcripts and many hundreds of cytidines in mitochondrial transcripts. The plant editosome, the molecular machinery responsible for this process, contains members of several protein families, including the organelle RNA recognition motif (ORRM)-containing family. ORRM1 and ORRM6 are chloroplast editing factors, while ORRM2, ORRM3, and ORRM4 are mitochondrial editing factors...
May 26, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28549158/chd2-regulates-chromatin-for-proper-gene-expression-toward-differentiation-in-mouse-embryonic-stem-cells
#15
Yuichiro Semba, Akihito Harada, Kazumitsu Maehara, Shinya Oki, Chikara Meno, Jun Ueda, Kazuo Yamagata, Atsushi Suzuki, Mitsuho Onimaru, Jumpei Nogami, Seiji Okada, Koichi Akashi, Yasuyuki Ohkawa
Chromatin reorganization is necessary for pluripotent stem cells, including embryonic stem cells (ESCs), to acquire lineage potential. However, it remains unclear how ESCs maintain their characteristic chromatin state for appropriate gene expression upon differentiation. Here, we demonstrate that chromodomain helicase DNA-binding domain 2 (Chd2) is required to maintain the differentiation potential of mouse ESCs. Chd2-depleted ESCs showed suppressed expression of developmentally regulated genes upon differentiation and subsequent differentiation defects without affecting gene expression in the undifferentiated state...
May 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28549155/evidence-for-double-strand-break-mediated-mitochondrial-dna-replication-in-saccharomyces-cerevisiae
#16
Kanchanjunga Prasai, Lucy C Robinson, Rona S Scott, Kelly Tatchell, Lynn Harrison
The mechanism of mitochondrial DNA (mtDNA) replication in Saccharomyces cerevisiae is controversial. Evidence exists for double-strand break (DSB) mediated recombination-dependent replication at mitochondrial replication origin ori5 in hypersuppressive ρ- cells. However, it is not clear if this replication mode operates in ρ+ cells. To understand this, we targeted bacterial Ku (bKu), a DSB binding protein, to the mitochondria of ρ+ cells with the hypothesis that bKu would bind persistently to mtDNA DSBs, thereby preventing mtDNA replication or repair...
May 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28549151/borrelia-species-detected-in-ticks-feeding-on-wild-korean-water-deer-hydropotes-inermis-using-molecular-and-genotypic-analyses
#17
D VanBik, S H Lee, M G Seo, B R Jeon, Y K Goo, S J Park, M H Rhee, O D Kwon, T H Kim, P J L Geraldino, D Kwak
Lyme borreliosis is a vector-borne disease transmitted through the bite of ticks infected by Borrelia burgdorferi sensu lato group, including B. burgdorferi sensu stricto, B. afzelii, and B. garinii. The goal of the present study was to detect Borrelia species in ticks infesting wild Korean water deer (KWD; Hydropotes inermis Swinhoe), using molecular and genotypic analyses. In total, 48 ticks were collected from KWD, all of which were morphologically identified as Haemaphysalis longicornis Neumann that is dominant in Korea...
May 26, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28549133/drug-repurposing-to-target-proteostasis-and-prevent-neurodegeneration-accelerating-translational-efforts
#18
Gabriela Mercado, Claudio Hetz
No abstract text is available yet for this article.
June 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28549123/working-conditions-in-the-explanation-of-occupational-inequalities-in-sickness-absence-in-the-french-sumer-study
#19
Isabelle Niedhammer, Thomas Lesuffleur, Sarah Memmi, Jean-François Chastang
: Explanations of social inequalities in sickness absence are lacking in the literature. Our objectives were to evaluate the contribution of various occupational exposures in explaining these inequalities in a national representative sample of employees. : The study was based on the cross-sectional sample of the SUMER 2010 survey that included 46 962 employees, 26 883 men and 20 079 women. Both sickness absence spells and days within the last 12 months, as health indicators, were studied. Occupation was used as a marker of social position...
May 25, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28549111/diabetic-db-db-mice-do-not-develop-heart-failure-upon-pressure-overload-a-longitudinal-in-vivo-pet-mri-and-mrs-study-on-cardiac-metabolic-structural-and-functional-adaptations
#20
Desiree Abdurrachim, Miranda Nabben, Verena Hoerr, Michael T Kuhlmann, Philipp Bovenkamp, Jolita Ciapaite, Ilvy M E Geraets, Will Coumans, Joost J F P Luiken, Jan F C Glatz, Michael Schäfers, Klaas Nicolay, Cornelius Faber, Sven Hermann, Jeanine J Prompers
Aim: Heart failure is associated with altered myocardial substrate metabolism and impaired cardiac energetics. Comorbidities like diabetes may influence the metabolic adaptations during heart failure development. We quantified to what extent changes in substrate preference, lipid accumulation, and energy status predict the longitudinal development of hypertrophy and failure in the non-diabetic and the diabetic heart. Methods and results: Transverse aortic constriction (TAC) was performed in non-diabetic ( db /+) and diabetic ( db/db ) mice to induce pressure overload...
May 26, 2017: Cardiovascular Research
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