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https://www.readbyqxmd.com/read/28222245/translation-rewiring-at-the-heart-of-phenotype-switching-in-melanoma
#1
Eleonora Leucci, Pierre Close, Jean-Christophe Marine
During tumor progression cancer cells are constantly challenged by intrinsic oncogene-induced and extrinsic micro-environmental stress signals such as hypoxia, nutrient deprivation, oxidative and genotoxic stress. Under these suboptimal growth conditions cancer cells activate an Integrative Stress Response (ISR), which results in a transient decrease in energy consumption followed by a cellular adaptation phase and possibly recovery, if the environmental conditions become more favorable. Translation is a very high energy-consuming process; it is therefore not surprising that to minimize energy consumption cancer cells turn down global protein synthesis rates while reprograming translation towards specific transcripts required for survival and adaptation...
February 21, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28199874/biodegradation-of-polyethylene-microplastics-by-the-marine-fungus-zalerion-maritimum
#2
Ana Paço, Kátia Duarte, João P da Costa, Patrícia S M Santos, R Pereira, M E Pereira, Ana C Freitas, Armando C Duarte, Teresa A P Rocha-Santos
Plastic yearly production has surpassed the 300milliontons mark and recycling has all but failed in constituting a viable solution for the disposal of plastic waste. As these materials continue to accumulate in the environment, namely, in rivers and oceans, in the form of macro-, meso-, micro- and nanoplastics, it becomes of the utmost urgency to find new ways to curtail this environmental threat. Multiple efforts have been made to identify and isolate microorganisms capable of utilizing synthetic polymers and recent results point towards the viability of a solution for this problem based on the biodegradation of plastics resorting to selected microbial strains...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28176548/nutritional-adequacy-of-meals-from-an-independent-catering-facility-versus-chain-restaurants-for-young-adults
#3
Charoula Konstantia Nikolaou, Catherine Ruth Hankey, Michael Ernest John Lean
BACKGROUND/OBJECTIVES: Eating out of home has been associated with the increasing prevalence of obesity. While some chain restaurants provide nutritional information for their products, smaller independent catering facilities may not provide such information. The aim of this study was to assess the nutritional adequacy of meals provided to young adults at an independent catering facility and compare them with meals provided by chain restaurants. SUBJECTS/METHODS: Meals were analysed in 2014 in the UK in relation of nutrient provision to targets for macro- and micro-nutrients...
January 1, 2017: Nutrition and Health
https://www.readbyqxmd.com/read/28167098/what-if-houses-were-powered-by-milk
#4
Neil Phillips, Andrew Adamatzky, Richard Mayne
Living architectures and green energy are hot topics of the applied sciences. They aim to develop buildings that co-live with their environment and co-habit with people they house. An ultimate goal would be to make every block in a building capable of producing energy. We present results of scoping, and somewhat illustrative, experiments on generating electrical energy in modified aerated concrete blocks. These blocks are commonly used in modern building industry and therefore make an ideal candidate for 'inbuilt' microbial bio-reactors...
February 3, 2017: Bio Systems
https://www.readbyqxmd.com/read/28163331/nutrient-and-pollutant-metals-within-earthworm-residues-are-immobilized-in-soil-during-decomposition
#5
J B Richardson, D J Renock, J H Görres, B P Jackson, S M Webb, A J Friedland
Earthworms are known to bioaccumulate metals, making them a potential vector for metal transport in soils. However, the fate of metals within soil upon death of earthworms has not been characterized. We compared the fate of nutrient (Ca, Mg, Mn) and potentially toxic (Cu, Zn, Pb) metals during decomposition of Amynthas agrestis and Lumbricus rubellus in soil columns. Cumulative leachate pools, exchangeable pools (0.1 M KCl + 0.01 M acetic acid extracted), and stable pools (16 M HNO3 + 12 M HCl extracted) were quantified in the soil columns after 7, 21, and 60 days of decomposition...
October 2016: Soil Biology & Biochemistry
https://www.readbyqxmd.com/read/28160904/the-vascular-anatomy-of-the-capitate-new-discoveries-using-micro-computed-tomography-imaging
#6
Assaf Kadar, Mohamed Morsy, Yoo-Joon Sur, Alexis T Laungani, Osman Akdag, Steven L Moran
PURPOSE: To study the intraosseous 3-dimensional microvasculature of the capitate bone using a novel high-resolution micro-computed tomography (μCT) imaging technology, and to examine the blood supply as it relates to the most common fracture types. METHODS: Ten cadaveric wrists were injected with a lead-based contrast agent. The capitates were harvested and imaged using a μCT scanner. The intraosseous vascularity was incorporated into a 3-dimensional image. We measured the vascular pattern as well as the vessels' cross-sectional area, number, and distribution...
February 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28133904/lifelong-intake-of-flaxseed-or-menhaden-oil-to-provide-varying-n-6-to-n-3-pufa-ratios-modulate-bone-microarchitecture-during-growth-but-not-after-ovx-in-sprague-dawley-rats
#7
Amanda B Longo, Phillip J Sullivan, Sandra J Peters, Paul J LeBlanc, Gregory R Wohl, Wendy E Ward
SCOPE: Skeletal health is a lifelong process impacted by environmental factors, including nutrient intake. The n-3 source and PUFA ratio affect bone health in growing rats, or following ovariectomy (OVX), but no study has investigated the longitudinal effect of PUFA-supplementation throughout these periods of bone development. METHODS AND RESULTS: One month old, Sprague-Dawley rats (n = 98) were randomized to receive 1 of 4 diets from 1 through 6 months of age. Diets were modified from AIN-93G to contain a varying amount and source of n-3 (flaxseed versus menhaden oil) to provide an n-6 to n-3 ratio of 10:1 or 5:1...
January 29, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28111314/three-dimensional-flow-patterns-in-the-feto-placental-vasculature-system-of-the-mouse-placenta
#8
Alexander T Shannon, Parisa Mirbod
In this study, three-dimensional (3D) blood flow of the feto-placental vasculature system of the mouse placenta was investigated using computational fluid dynamics (CFD) methods and finite element analysis. Micro-computerized tomography (micro-CT) images were used to acquire the 3D geometry of the feto-placental vasculature system, and image-processing software has been used to calculate the 3D morphology of the placenta. The flow was analyzed numerically and compared to the experimental data received from the same model...
January 19, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28110099/high-dietary-intake-of-specific-fatty-acids-increases-risk-of-flares-in-patients-with-ulcerative-colitis-in-remission-during-treatment-with-aminosalicylates
#9
Edward L Barnes, Molly Nestor, Louisa Onyewadume, Punyanganie De Silva, Joshua R Korzenik
BACKGROUND & AIMS: Dietary factors may have a significant role in relapse of disease among patients with ulcerative colitis (UC). However, the relationship between diet and UC is inadequately understood. We analyzed data from the diet's role in exacerbations of mesalamine maintenance study to determine whether dietary factors affect the risk of disease flares in patients with UC. METHODS: We performed a prospective, multicenter, observational study of 412 patients, from 25 sites, with UC in remission during monotherapy with an aminosalicylate...
January 18, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28105733/vitamin-d-supplementation-for-sickle-cell-disease
#10
REVIEW
Htoo Htoo Kyaw Soe, Adinegara Bl Abas, Nan Nitra Than, Han Ni, Jaspal Singh, Abdul Razzak Bin Mohd Said, Ifeyinwa Osunkwo
BACKGROUND: Sickle cell disease is a genetic chronic haemolytic and pro-inflammatory disorder. The clinical manifestations of sickle cell disease result from the presence of mutations on the beta globin genes that generate an abnormal haemoglobin product (called haemoglobin S) within the red blood cell. Sickle cell disease can lead to many complications such as acute chest syndrome, stroke, acute and chronic bone complications (including painful vaso-occlusive crisis, osteomyelitis, osteonecrosis and osteoporosis)...
January 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28092382/a-vascularized-and-perfused-organ-on-a-chip-platform-for-large-scale-drug-screening-applications
#11
Duc T T Phan, Xiaolin Wang, Brianna M Craver, Agua Sobrino, Da Zhao, Jerry C Chen, Lilian Y N Lee, Steven C George, Abraham P Lee, Christopher C W Hughes
There is a growing awareness that complex 3-dimensional (3D) organs are not well represented by monolayers of a single cell type - the standard format for many drug screens. To address this deficiency, and with the goal of improving screens so that drugs with good efficacy and low toxicity can be identified, microphysiological systems (MPS) are being developed that better capture the complexity of in vivo physiology. We have previously described an organ-on-a-chip platform that incorporates perfused microvessels, such that survival of the surrounding tissue is entirely dependent on delivery of nutrients through the vessels...
January 31, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28078576/feeding-problems-and-nutrient-intake-in-children-with-and-without-autism-a-comparative-study
#12
Prahbhjot Malhi, Lolam Venkatesh, Bhavneet Bharti, Pratibha Singhi
OBJECTIVE: To compare parent reported feeding difficulties and nutritional adequacy of children with Autism Spectrum Disorders (ASD) to an age and socio-economically matched group of typically developing children. METHODS: The scores on Children's Eating Behavior Inventory (CEBI), three-day food records, anthropometric measures and adequacy of micro- and macro- nutrients were compared for 63 children diagnosed with ASD and 50 typically developing children enrolled from the department of pediatrics of a tertiary care teaching hospital from North India...
January 12, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28074329/dietary-adequacy-of-egyptian-children-with-autism-spectrum-disorder-compared-to-healthy-developing-children
#13
Nagwa A Meguid, Mona Anwar, Geir Bjørklund, Adel Hashish, Salvatore Chirumbolo, Maha Hemimi, Eman Sultan
Although the etiology and pathology of autism spectrum disorder (ASD) is still poorly understood, a number of environmental, anthropological, neurobiological and genetic factors have been related to the pathophysiology of ASD, even the impact of oxidative stress response related to the environment and nutrition intake. Usual recommended dietary habits are based on the combination of behavioral and dietary or nutraceutical interventions together with pharmacotherapy. Investigations about a reliable relationship between diet and ASD are still lacking...
January 10, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28031055/the-returns-of-family-planning-macro-level-assessment-of-the-effect-of-contraceptive-use-on-women-s-anaemia-and-childhood-undernutrition
#14
Md Juel Rana, Srinivas Goli
This study investigated the effect of family planning on the levels of women's anaemia and child undernutrition at the aggregate level using the compiled databases of the World Bank, UNICEF and the Economist Intelligence Unit. Correlation scatter matrix plots and multivariate OLS regression models were employed to assess the effect of family planning on women's anaemia and child nutritional status across countries. At the aggregate level, the bivariate correlation estimates found that the Contraceptive Prevalence Rate (CPR) was negatively associated with women's anaemia (r=-0...
December 29, 2016: Journal of Biosocial Science
https://www.readbyqxmd.com/read/28030637/quality-matters-influences-of-citrus-flush-physicochemical-characteristics-on-population-dynamics-of-the-asian-citrus-psyllid-hemiptera-liviidae
#15
Mamoudou Sétamou, Catherine R Simpson, Olufemi J Alabi, Shad D Nelson, Srilakshmi Telagamsetty, John L Jifon
Studies were conducted to relate the influence of the physical characteristics, leaf nutrient content and phloem sap amino acid concentration of citrus flush shoots on the densities of various Diaphorina citri life stages. Adult D. citri preferentially selected young shoots for feeding and numbers of D. citri immatures were positively correlated with flush shoot softness. Young flush shoots had higher concentrations of macro and micro nutrients relative to mature ones and this was associated with higher densities of all D...
2016: PloS One
https://www.readbyqxmd.com/read/28011362/designing-living-walls-for-greywater-treatment
#16
Harsha S Fowdar, Belinda E Hatt, Peter Breen, Perran L M Cook, Ana Deletic
Greywater is being increasingly used as an alternative water source to reduce potable water demand and to alleviate pressure on sewerage systems. This paper presents the development of a low energy and low maintenance greywater treatment technology: a living wall system, employing ornamental plants (including vines) grown in a sand filter on a side of a building to treat shower, bath, and washing basin wastewaters. The system can, at the same time, provide critical amenity and micro-climate benefits to our cities...
December 14, 2016: Water Research
https://www.readbyqxmd.com/read/27979230/polar-constituents-protection-against-reactive-oxygen-species-and-nutritional-value-of-chinese-artichoke-stachys-affinis-bunge
#17
Alessandro Venditti, Claudio Frezza, Diana Celona, Armandodoriano Bianco, Mauro Serafini, Kevin Cianfaglione, Dennis Fiorini, Stefano Ferraro, Filippo Maggi, Anna Rita Lizzi, Giuseppe Celenza
In the present work, we studied the chemical composition of Chinese artichoke (S. affinis tubers) by analyzing its polar constituents and its macro- and micro- nutrients. A total of nine compounds were isolated from the tuber ethanolic extract and structurally elucidated by Nuclear Magnetic Resonance (NMR) spectroscopy and mass spectrometry (MS). The marker compounds identified were oligosaccharide stachyose and the organic acid, succinic acid, as well as phenylethanoid and iridoid glycosides. The macronutrient profile was dominated by carbohydrates (36...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27965730/a-microfluidic-method-and-custom-model-for-continuous-non-intrusive-biofilm-viscosity-measurements-under-different-nutrient-conditions
#18
J Greener, M Parvinzadeh Gashti, A Eslami, M P Zarabadi, S M Taghavi
Straight, low-aspect ratio micro flow cells are used to support biofilm attachment and preferential accumulation at the short side-wall, which progressively reduces the effective channel width. The biofilm shifts downstream at measurable velocities under the imposed force from the constant laminar co-flowing nutrient stream. The dynamic behaviour of the biofilm viscosity is modeled semi-analytically, based on experimental measurements of biofilm dimensions and velocity as inputs. The technique advances the study of biofilm mechanical properties by strongly limiting biases related to non-Newtonian biofilm properties (e...
November 2016: Biomicrofluidics
https://www.readbyqxmd.com/read/27965729/a-novel-method-for-fabricating-engineered-structures-with-branched-micro-channel-using-hollow-hydrogel-fibers
#19
Shuai Li, Yuanyuan Liu, Yu Li, Change Liu, Yuanshao Sun, Qingxi Hu
Vascularization plays a crucial role in the regeneration of different damaged or diseased tissues and organs. Vascularized networks bring sufficient nutrients and oxygen to implants and receptors. However, the fabrication of engineered structures with branched micro-channels (ESBM) is still the main technological barrier. To address this problem, this paper introduced a novel method for fabricating ESBM; the manufacturability and feasibility of this method was investigated. A triaxial nozzle with automatic cleaning function was mounted on a homemade 3D bioprinter to coaxially extrude sodium alginate (NaAlg) and calcium chloride (CaCl2) to form the hollow hydrogel fibers...
November 2016: Biomicrofluidics
https://www.readbyqxmd.com/read/27965690/root-to-shoot-hormonal-communication-in-contrasting-rootstocks-suggests-an-important-role-for-the-ethylene-precursor-aminocyclopropane-1-carboxylic-acid-in-mediating-plant-growth-under-low-potassium-nutrition-in-tomato
#20
Cristina Martínez-Andújar, Alfonso Albacete, Ascensión Martínez-Pérez, José Manuel Pérez-Pérez, María José Asins, Francisco Pérez-Alfocea
Selection and breeding of rootstocks that can tolerate low K supply may increase crop productivity in low fertility soils and reduce fertilizer application. However, the underlying physiological traits are still largely unknown. In this study, 16 contrasting recombinant inbred lines (RILs) derived from a cross between domestic and wild tomato species (Solanum lycopersicum × Solanum pimpinellifolium) have been used to analyse traits related to the rootstock-mediated induction of low (L, low shoot fresh weight) or high (H, high shoot fresh weight) vigor to a commercial F1 hybrid grown under control (6 mM, c) and low-K (1 mM, k)...
2016: Frontiers in Plant Science
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