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https://www.readbyqxmd.com/read/29793181/exogenously-applied-spermidine-alleviates-photosynthetic-inhibition-under-drought-stress-in-maize-zea-mays-l-seedlings-associated-with-changes-in-endogenous-polyamines-and-phytohormones
#1
Lijie Li, Wanrong Gu, Jing Li, Congfeng Li, Tenglong Xie, Danyang Qu, Yao Meng, Caifeng Li, Shi Wei
Drought stress (DS) is a major environmental factor limiting plant growth and crop productivity worldwide. It has been established that exogenous spermidine (Spd) stimulates plant tolerance to DS. The effects of exogenous Spd on plant growth, photosynthetic performance, and chloroplast ultrastructure as well as changes in endogenous polyamines (PAs) and phytohormones were investigate in DS-resistant (Xianyu 335) and DS-sensitive (Fenghe 1) maize seedlings under well-watered and DS treatments. Exogenous Spd alleviated the stress-induced reduction in growth, photosynthetic pigment content, photosynthesis rate (Pn ) and photochemical quenching (qP ) parameters, including the maximum photochemistry efficiency of photosystem II (PSII) (Fv /Fm ), PSII operating efficiency (ФPSII), and qP coefficient...
May 15, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29792723/-experimental-promotion-of-liver-regeneration-after-portal-vein-branch-ligation
#2
V Liška, V Třeška, H Mírka, O Vyčítal, J Brůha, L Haidingerová, J Beneš, Z Tonar, R Pálek, J Rosendorf
INTRODUCTION: Portal vein embolization or ligation (PVE/PVL) is part of most multi-stage liver procedures in the case of low future liver remnant volume (FLRV). PVE initiates compensatory hypertrophy of non-occluded liver parenchyma. This hypertrophy is stimulated by an increased volume of portal blood in the non-occluded veins. PVE results in adequate FLRV growth necessary for resection only in 63-96% patients. The aim of this publication is to summarize the possibilities of influencing liver regeneration after PVE/PVL in an experiment using cytokines (TNF-α, IL-6), a monoclonal antibody against TGF-β1 (MAB TGF-β1) and mesenchymal stem cells (MSC)...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29792173/impact-of-growth-ph-and-glucose-concentrations-on-the-cody-regulatory-network-in-streptococcus-salivarius
#3
Jianing Geng, Szu-Chuan Huang, Yueh-Ying Chen, Cheng-Hsun Chiu, Songnian Hu, Yi-Ywan M Chen
BACKGROUND: Streptococcus salivarius is an abundant isolate of the human oral microbiota. Since both pH and glucose availability fluctuate frequently in the oral cavity, the goal of this study was to investigate regulation by CodY, a conserved pleiotropic regulator of Gram positive bacteria, in response to these two signals. The chemostat culture system was employed to precisely control the growth parameters, and the transcriptomes of wild-type S. salivarius 57.I and its CodY-null derivative (ΔcodY) grown at pH 7 and 5...
May 23, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29790557/controlling-the-magic-size-of-white-light-emitting-cdse-quantum-dots
#4
Sheng Dai, Yu-Sheng Su, Shu-Ru Chung, Kuan-Wen Wang, Xiaoqing Pan
White light-emitting quantum dots (QDs) have shown brilliant prospects as a white-light source in solid-state lighting devices, however their commercial application is limited by their low fluorescence quantum yield (QY). Here, we report a facile thermal pyrolyzed organometallic route to synthesize white-light emitting CdSe QDs with enhanced QY, by employing a particular non-coordinating solvent and long carbon chain amine. By clarifying the three distinct growing stages of CdSe nanocrystals, we are able to determine the critical growth parameters for high quality magic size QDs...
May 23, 2018: Nanoscale
https://www.readbyqxmd.com/read/29790310/anticancer-activity-of-chlorhexidine-and-cranberry-extract-an-in-vitro-study
#5
Mahesh R Khairnar, Umesh Wadgave, Harish Jadhav, Rahul Naik
Introduction: Oral cancer is considered to be a global pandemic. The study was conducted to assess the anti-cancer activities of Chlorhexidine (CHX) and Cranberry against oral cancer cell lines. Material and Methods: Anticancer activity of CHX and Cranberry extract (CE) was assessed against AW13516 (poorly to moderately differentiated squamous cell carcinoma of tongue) and KB (Nasopharyngeal carcinoma) using Sulforhodamine B (SRB) assay at the Advanced Centre for Treatment Research and Education in Cancer (ACTREC) Mumbai, India...
May 2018: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/29790222/monitoring-the-hydrothermal-growth-of-cobalt-spinel-water-oxidation-catalysts-from-preparative-history-to-catalytic-activity
#6
Lukas Reith, Karla Lienau, Daniel S Cook, René Moré, Richard I Walton, Greta Ricarda Patzke
The hydrothermal growth of cobalt oxide spinel (Co₃O₄) nanocrystals from cobalt acetate precursors was monitored with in situ powder X-ray diffraction (PXRD) in combination with ex situ electron microscopy and vibrational spectroscopy. Kinetic data from in situ PXRD monitoring were analyzed using Sharp-Hancock and Gualtieri approaches, which both clearly indicate a change of the growth mechanism for reaction temperatures above 185°C. This mechanistic transition goes hand in hand with morphology changes that notably influence the photocatalytic oxygen evolution activity...
May 23, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29790214/predictability-of-demographic-rates-based-on-phylogeny-and-biological-similarity
#7
Judy Che-Castaldo, Christian Che-Castaldo, Maile C Neel
Lack of demographic data for most of the world's threatened species is a widespread problem that precludes viability-based status assessments for species conservation. A commonly suggested solution is to use data from species that are closely related or biologically similar to the focal species. This approach assumes that similar species and populations of the same species would have similar demographic rates, an assumption that has yet to be thoroughly tested. In this study, we constructed a Bayesian hierarchical model to predict demographic rates (intrinsic rate of population growth, r; recruit survival; juvenile survival; adult survival; fecundity) based on biological traits and phylogenetic relatedness, using data for 425 plant species...
May 23, 2018: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/29789988/growth-performance-blood-parameters-carcass-characteristics-and-meat-quality-traits-in-potchefstroom-koekoek-chickens-fed-lippia-javanica-leaf-meal
#8
T B Matshogo, V Mlambo, U Marume, N Sebola
Lippia javanica leaves may have nutraceutical bioactivity and thus could be a viable alternative to antibiotic growth promoters in poultry diets. To test this hypothesis, a feeding trial was carried out to determine the effects of dietary inclusion of Lippia javanica leaf meal (LJ) on growth performance, blood parameters, carcass characteristics and meat quality of indigenous Potchefstroom Koekoek (PK) chickens. The leaf meal was used to dilute a commercial chicken grower diet at a rate of 25 or 50 g/kg diet...
May 22, 2018: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29789898/-clinical-parameters-of-patients-with-neovascular-age-related-macular-degeneration-longterm-treatment-results-of-an-outpatient-clinic
#9
S Wassel, E Tsompanidi, E Tahmaz, B Hörster, R Hoerster
BACKGROUND: The clinical outcome of neovascular age-related macular degeneration (nAMD) depends on constant follow-up and consistent treatment. Data about the long-term course of intensive anti-vascular endothelial growth factor (VEGF) therapy from outpatient clinics are rare. OBJECTIVE: The aim of the study was to characterize a population of nAMD patients with long-term follow-up and intensive anti-VEGF therapy. PATIENTS AND METHODS: In a supra-regional outpatient clinic, we retrospectively identified patients who had received at least 30 intravitreal anti-VEGF injections and were followed for at least 4 years...
May 22, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29789791/association-between-insulin-like-growth-factor-1-and-uric-acid-in-chinese-children-and-adolescents-with-idiopathic-short-stature-a-cross-sectional-study
#10
Panpan Wang, Baolan Ji, Qian Shao, Mei Zhang, Bo Ban
Objective: The aim of this study was to examine the relationship between insulin-like growth factor-1 (IGF-1) and serum uric acid (UA) in Chinese children and adolescents with idiopathic short stature (ISS). Methods: A cross-sectional study of 91 Chinese children and adolescents with ISS was performed. Anthropometric measurements and biochemical parameters were tested. The standard deviation score of IGF-1 (IGF-1 SDS) was calculated. Results: A univariate analysis displayed a significant positive correlation between IGF-1 SDS and UA ( P = 0...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29788365/implementation-of-different-feed-withdrawal-times-and-water-temperatures-in-managing-turkeys-during-heat-stress
#11
Mohamed F A Farghly, Khalid M Mahrose, Ali E Galal, Reham M Ali, Enas A M Ahmad, Zaib Ur Rehman, Zafar Ullah, Chan Ding
This investigation studied the effects of different feed withdrawal times, water temperatures, and their interaction on growth performance, carcass traits, blood parameters, and health aspects of native turkeys (Egyptian local breed). We distributed native turkey poults (n = 180; 4 wk old) into 3 groups according to feed withdrawal time (ad libitum; feed withdrawal from 800 to 1,400 h, FW8 to 14; and feed withdrawal from 1,400 to 2,000 h, FW14 to 20). Each group was further divided into 2 subgroups corresponding to water temperature (ordinary and chilled water)...
May 19, 2018: Poultry Science
https://www.readbyqxmd.com/read/29788327/tree-ring-proxies-of-larch-bud-moth-defoliation-latewood-width-and-blue-intensity-are-more-precise-than-tree-ring-width
#12
Estelle Arbellay, Ingrid Jarvis, Raphaël D Chavardès, Lori D Daniels, Markus Stoffel
Reconstructions of defoliation by larch bud moth (LBM, Zeiraphera diniana Gn.) based on European larch (Larix decidua Mill.) tree rings have unraveled outbreak patterns over exceptional temporal and spatial scales. In this study, we conducted tree-ring analyses on 105 increment cores of European larch from the Valais Alps, Switzerland. The well-documented history of LBM outbreaks in Valais provided a solid baseline for evaluating the LBM defoliation signal in multiple tree-ring parameters. First, we used tree-ring width measurements along with regional records of LBM outbreaks to reconstruct the occurrence of these events at two sites within the Swiss Alps...
May 19, 2018: Tree Physiology
https://www.readbyqxmd.com/read/29787908/impact-of-fouling-on-the-decline-of-aeration-efficiency-under-different-operational-conditions-at-wrrfs
#13
Manel Garrido-Baserba, Pitiporn Asvapathanagul, Hee-Deung Park, Taek-Seung Kim, G Andres Baquero-Rodriguez, Betty H Olson, Diego Rosso
Biofilm formation influences the most energy-demanding process in the waste water treatment cycle. Biofilm growth on the surface of wastewater aeration diffusers in water resource recovery facilities (WRRFs) can increase the energy requirements up to 50% in less than 2 years. The impact of biofilms in aeration diffusers was quantified and assessed for first time using molecular tools (i.e., Energy-dispersive X-ray, Ra and RMS and Pyrosequencing) and state-of-the-art techniques (i.e., EPS quantification, Hydrophobicity and DNA quantification)...
May 19, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29787849/application-of-prickly-pear-fruit-extract-to-improve-domestic-shelf-life-quality-and-microbial-safety-of-sliced-beef
#14
Rosa Palmeri, Lucia Parafati, Cristina Restuccia, Biagio Fallico
The research aimed to expand the knowledge on the use of natural bioactive compounds for food preservation. First-crop fruit of prickly pear were subjected to water extraction and evaluated for total polyphenol content, antioxidant activity, in vitro antimicrobial performance against food spoilage and pathogenic bacteria, and betacyanin and betaxanthin content. The extract was then applied by dipping technique to packed sliced beef, to evaluate its effect on physical and chemical parameters, color and texture maintenance, as well as on microbial growth during shelf life at domestic storage conditions...
May 19, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29787258/the-mode-of-action-of-adjuvants-relevance-of-physicochemical-properties-for-effects-on-the-foliar-application-cuticular-permeability-and-greenhouse-performance-of-pinoxaden
#15
Katja Arand, Elisabeth Asmus, Christian Popp, Daniel Schneider, Markus Riederer
We comprehensively studied the complexity of mode of action of adjuvants by uncoupling the parameters contributing to the spray process during foliar application of agrochemicals. The ethoxylated sorbitan esters Tween 20 and Tween 80 improved the efficiency of Pinoxaden (PXD) in controlling grass-weed species in greenhouse experiments by aiding retention, having humectant properties, maintaining the bioavailability and increasing the cuticular penetration of PXD. The non-ethoxylated sorbitan esters Span 20 and Span 80 showed minimal effects on retention, droplet hydration or cuticular penetration, resulting in poor PXD effects in the greenhouse...
May 22, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29785961/trajectories-of-childhood-blood-pressure-and-adult-left-ventricular-hypertrophy-the-bogalusa-heart-study
#16
Tao Zhang, Shengxu Li, Lydia Bazzano, Jiang He, Paul Whelton, Wei Chen
This longitudinal study aims to characterize longitudinal blood pressure (BP) trajectories from childhood and examine the impact of level-independent childhood BP trajectories on adult left ventricular hypertrophy (LVH) and remodeling patterns. The longitudinal cohort consisted of 1154 adults (787 whites and 367 blacks) who had repeated measurements of BP 4 to 15 times from childhood (4-19 years) to adulthood (20-51 years) and assessment of echocardiographic LV dimensions in adulthood. Model-estimated levels and linear slopes of BP at childhood age points were calculated in 1-year intervals using the growth curve parameters and their first derivatives, respectively...
May 21, 2018: Hypertension
https://www.readbyqxmd.com/read/29785337/modelling-the-growth-of-the-brown-frog-rana-dybowskii
#17
Qing Tong, Xiao-Peng Du, Zong-Fu Hu, Li-Yong Cui, Hong-Bin Wang
Well-controlled development leads to uniform body size and a better growth rate; therefore, the ability to determine the growth rate of frogs and their period of sexual maturity is essential for producing healthy, high-quality descendant frogs. To establish a working model that can best predict the growth performance of frogs, the present study examined the growth of one-year-old and two-year-old brown frogs ( Rana dybowskii ) from metamorphosis to hibernation (18 weeks) and out-hibernation to hibernation (20 weeks) under the same environmental conditions...
2018: PeerJ
https://www.readbyqxmd.com/read/29785067/-in-silico-physicochemical-characterization-and-topology-analysis-of-respiratory-burst-oxidase-homolog-rboh-proteins-from-arabidopsis-and-rice
#18
Gurpreet Kaur, Pratap Kumar Pati
NADPH oxidase (NOX) is a key enzyme involved in the production of apoplastic superoxide (O2-), a type of reactive oxygen species (ROS). Plant Noxes are the homologs of mammalian NADPH oxidase's catalytic subunit and are documented as respiratory burst oxidase homologs (Rbohs). A number of studies have reported their diverse functions in combating various stresses and in plant growth and development. In the present study, a total of 19 Rboh proteins (10 from Arabidopsis thaliana and 9 from Oryza sativa Japonica) were analyzed...
2018: Bioinformation
https://www.readbyqxmd.com/read/29784576/normal-values-and-growth-related-changes-of-left-ventricular-volumes-stress-and-strain-in-healthy-children-measured-by-3-dimensional-echocardiography
#19
Joseph D Kuebler, Sunil Ghelani, David M Williams, Meena Nathan, Gerald Marx, Steven D Colan, David M Harrild
Normal pediatric values of three-dimensional (3D) left ventricular (LV) volumes and strain are not well established; moreover, no reports exist of the stress-strain relation and the heart rate-corrected velocity of circumferential fiber shortening (VCFc) based upon 3D imaging in children. Three-dimensional LV datasets were obtained in pediatric patients (≤18 years of age) with structurally normal hearts. Ventricular volumes and strain components (longitudinal, GLS; circumferential, GCS; and 3D strain, 3DS) were analyzed using a commercial 3D speckle-tracking analysis package...
April 24, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29783867/virtual-stenting-of-intracranial-aneurysms-a-pilot-study-for-the-prediction-of-treatment-success-based-on-hemodynamic-simulations
#20
Philipp Berg, Sylvia Saalfeld, Gábor Janiga, Olivier Brina, Nicole M Cancelliere, Paolo Machi, Vitor M Pereira
Endovascular treatment of intracranial aneurysms using flow-diverting devices has revolutionized the treatment of large and complex lesions due to its minimally invasive nature and potential clinical outcomes. However, incomplete or delayed occlusion and persistent intracranial aneurysm growth are still an issue for up to one-third of the patients. We evaluated two patients with intracranial aneurysm located at the internal carotid artery who were treated with flow-diverting devices and had opposite outcomes...
May 1, 2018: International Journal of Artificial Organs
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