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https://www.readbyqxmd.com/read/28823056/exploiting-non-canonical-translation-to-identify-new-targets-for-t-cell-based-cancer-immunotherapy
#1
REVIEW
Céline M Laumont, Claude Perreault
Cryptic MHC I-associated peptides (MAPs) are produced via two mechanisms: translation of protein-coding genes in non-canonical reading frames and translation of allegedly non-coding sequences. In general, cryptic MAPs are coded by relatively short open reading frames whose translation can be regulated at the level of initiation, elongation or termination. In contrast to conventional MAPs, the processing of cryptic MAPs is frequently proteasome independent. The existence of cryptic MAPs derived from allegedly non-coding regions enlarges the scope of CD8 T cell immunosurveillance from a mere ~2% to as much as ~75% of the human genome...
August 19, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28823015/effects-of-eutrophication-on-diatom-abundance-biovolume-and-diversity-in-tropical-coastal-waters
#2
Joon Hai Lim, Choon Weng Lee
Diatom abundance, biovolume and diversity were measured over a 2-year period along the Straits of Malacca at two stations with upper (Klang) and lower (Port Dickson) states of eutrophication. Diatom abundance, which ranged from 0.2 × 10(4) to 21.7 × 10(4) cells L(-1) at Klang and 0.9 × 10(3)- 41.3 × 10(3) cells L(-1) at Port Dickson, was influenced partly by nutrient concentrations. At Klang, the diatoms were generally smaller and less diverse (H' = 0.77 ± 0.48) and predominated by Skeletonema spp...
August 3, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28823013/dynamics-of-total-microcystin-lr-concentration-in-three-subtropical-hydroelectric-generation-reservoirs-in-uruguay-south-america
#3
Mauricio González-Piana, Daniel Fabián, Andrea Piccardo, Guillermo Chalar
This study analyzed the temporal dynamics of total microcystin LR concentrations between the years of 2012 and 2015 in the Bonete, Baygorria and Palmar hydroelectric generation reservoirs in the central region of the Negro River, Uruguay. The three reservoirs showed differents total microcystin LR concentration, with no significant differences among them. Over 20 sampling dates, the three reservoirs exhibited total microcystin LR concentrations on eight occasions that corresponded to a slight to moderate human health risk according to WHO guideline values for recreational waters...
August 20, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28822970/estimating-the-effects-of-novel-on-pack-warnings-on-young-adult-smokers-and-susceptible-non-smokers
#4
Philip Gendall, Christine Eckert, Janet Hoek, Jordan Louviere
BACKGROUND: On-pack tobacco warnings can deter smoking initiation and provide powerful cessation cues. However, these warnings typically feature graphic health images, which many young adults dismiss as irrelevant. We estimated responses to more diverse warnings and examined how these performed relative to each other. METHODS: We conducted a behavioural likelihood experiment and a choice modelling experiment in which 474 smokers and 476 susceptible non-smokers aged between 16 and 30 years evaluated 12 warnings featuring health, social, financial and cosmetic themes...
August 19, 2017: Tobacco Control
https://www.readbyqxmd.com/read/28822967/temporal-dynamics-of-cardiac-hypertrophic-growth-in-response-to-pressure-overload
#5
Yuan Wang, Yuannyu Zhang, Guanqiao Ding, Herman May, Jian Xu, Thomas G Gillette, Hang Wang, Zhao V Wang
Hypertension is one of the most important risk factors of heart failure. In response to high blood pressure, the left ventricle manifests hypertrophic growth to ameliorate wall stress, which may progress into decompensation and trigger pathological cardiac remodeling. Despite the clinical importance, the temporal dynamics of pathological cardiac growth remains elusive. Here, we took advantage of the puromycin labeling approach to measure the relative rates of protein synthesis as a way to delineate the temporal regulation of cardiac hypertrophic growth...
August 19, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28822930/spatial-and-temporal-patterns-of-pesticide-concentrations-in-streamflow-drainage-and-runoff-in-a-small-swedish-agricultural-catchment
#6
Maria Sandin, Kristin Piikki, Nicholas Jarvis, Mats Larsbo, Kevin Bishop, Jenny Kreuger
A better understanding of the dominant source areas and transport pathways of pesticide losses to surface water is needed for targeting mitigation efforts in a more cost-effective way. To this end, we monitored pesticides in surface water in an agricultural catchment typical of one of the main crop production regions in Sweden. Three small sub-catchments (88-242ha) were selected for water sampling based on a high-resolution digital soil map developed from proximal sensing methods and soil sampling; one sub-catchment had a high proportion of clay soils, another was dominated by coarse sandy soils while the third comprised a mix of soil types...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822895/gut-microbiota-trajectory-in-patients-with-severe-burn-a-time-series-study
#7
Xinying Wang, Jianbo Yang, Feng Tian, Li Zhang, Qiucheng Lei, Tingting Jiang, Jihong Zhou, Siming Yuan, Jun Wang, Zhijian Feng, Jieshou Li
PURPOSE: This time series experiments aimed to investigate the dynamic change of gut microbiomes after severe burn and its association with enteral nutrition (EN). MATERIALS AND METHODS: Seven severely burned patients who suffered from a severe metal dust explosion injury were recruited in this study. The dynamic changes of gut microbiome of fecal samples at six time points (1-3days, 2, 3, 4, 5 and 6weeks after severe burn) were detected using 16S ribosomal RNA pyrosequencing technology...
August 12, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28822872/different-mossy-fiber-sprouting-patterns-in-ilae-hippocampal-sclerosis-types
#8
Barbara Schmeiser, Jinmei Li, Armin Brandt, Josef Zentner, Soroush Doostkam, Thomas M Freiman
OBJECTIVE: Hippocampal sclerosis (HS) is the most prevalent pathology in temporal lobe epilepsy (TLE) characterized by segmental neuronal cell loss in the cornu ammonis (CA) 1-4. In addition, migration of granule cells and reorganization of their axons is observed, known as granule cell dispersion (GCD) and mossy fiber sprouting (MFS). The loss of mossy fibers` (MF) target cells in CA4 and CA3 was considered to be causative for MFS. The ILAE HS (International League Against Epilepsy) classification identifies three subtypes with different cell loss patterns in CA1-4...
August 8, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28822838/scavenging-reactive-oxygen-species-inhibits-status-epilepticus-induced-neuroinflammation
#9
Pallavi B McElroy, Li-Ping Liang, Brian J Day, Manisha Patel
Inflammation has been identified as an important mediator of seizures and epileptogenesis. Understanding the mechanisms underlying seizure-induced neuroinflammation could lead to the development of novel therapies for the epilepsies. Reactive oxygen species (ROS) are recognized as mediators of seizure-induced neuronal damage and are known to increase in models of epilepsies. ROS are also known to contribute to inflammation in several disease states. We hypothesized that ROS are key modulators of neuroinflammation i...
August 16, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28822810/post-stress-metabolic-trajectories-in-young-and-old-flies
#10
Hervé Colinet, David Renault
Hallmarks of aging and age-related mortality (actuarial senescence) have received major focus in the published literature, while fewer studies have investigated functional senescence. Age-related decline in the performance of organism is particularly important for organisms exposed to environmental stress, as the range of conditions allowing physiological equilibria narrows with age (homeostenosis concept). During aging, compensatory metabolic responses might occur to maintain the redox potential and homeostasis...
August 16, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28822776/assessment-of-ovarian-follicular-dynamics-and-folliculogenesis-associated-endocrine-profiles-following-gonadotropin-stimulation-in-the-bonnet-monkey
#11
Bhupathi Sukesh, Muraly Puttabyatappa, Augustine T Peter, Rudraiah Medhamurthy, Polani B Seshagiri
We evaluated ovarian follicular dynamics in bonnet monkeys by employing trans-abdominal ultrasonography. Following the administration of human follicle stimulating hormone (hFSH) and/or human menopausal gonadotropin (hMG), multiple follicular development was assessed and their numbers, size and growth profiles were monitored. The ultrasonograms showed that the follicular antrum appeared distinctly anechoic with well-defined hyperechoic borders. Depending on the type, quantity (12.5-25 IU), and duration (6-9 days) of hormones administered, the number of developing follicles was 2-12 per ovary with their lowest diameter being 2 mm...
August 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28822716/contrast-effects-on-speed-perception-for-linear-and-radial-motion
#12
Rebecca A Champion, Paul A Warren
Speed perception is vital for safe activity in the environment. However, considerable evidence suggests that perceived speed changes as a function of stimulus contrast, with some investigators suggesting that this might have meaningful real-world consequences (e.g. driving in fog). In the present study we investigate whether the neural effects of contrast on speed perception occur at the level of local motion processing or more complex global motion configurations. To do this we examine both speed discrimination thresholds and contrast-dependent speed perception for two global motion configurations that have matched local spatio-temporal structure...
August 16, 2017: Vision Research
https://www.readbyqxmd.com/read/28822679/spatial-and-temporal-control-of-senescence
#13
REVIEW
Yoko Ito, Matthew Hoare, Masashi Narita
Cellular senescence is an autonomous tumor suppressor mechanism leading to stable cell cycle arrest. Senescent cells are highly secretory, driving a range of different functions through the senescence-associated secretory phenotype (SASP). Recent findings have suggested that the composition of the SASP is dynamically and spatially regulated and that the changing composition of the SASP can determine the beneficial and detrimental aspects of the senescence program, tipping the balance to either an immunosuppressive/profibrotic environment or proinflammatory/fibrolytic state...
August 16, 2017: Trends in Cell Biology
https://www.readbyqxmd.com/read/28822495/crop-pollination-services-at-the-landscape-scale
#14
REVIEW
Gesine Pufal, Ingolf Steffan-Dewenter, Alexandra-Maria Klein
Managed and wild pollinators of different functional groups can provide pollination services in agricultural landscapes. These pollinators differ in their resource requirements and response to the amount and arrangement of different habitat types, that is, landscape composition and configuration. Most current approaches to test landscape effects on pollinators and pollination services are either applied to central individual crop fields or other landscape elements but rarely consider that pollinators depend on and make use of multiple habitat elements in an entire landscape...
June 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28822491/role-of-dispersal-in-resistance-evolution-and-spread
#15
REVIEW
Nicholas J Miller, Thomas W Sappington
Gene flow via immigration affects rate of evolution of resistance to a pest management tactic, while emigration from a resistant population can spread resistance alleles spatially. Whether resistance detected across the landscape reflects ongoing de novo evolution in different hotspots or spread from a single focal population can determine the most effective mitigation strategy. Pest dispersal dynamics determine the spatio-temporal scale at which mitigation tactics must be applied to contain or reverse resistance in an area...
June 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28822488/sublethal-exposure-insecticide-resistance-and-community-stress
#16
REVIEW
Raul Narciso C Guedes, Spencer S Walse, James E Throne
Insecticides are an invaluable pest management tool and anthropogenic stressors of widespread environmental occurrence that are subject to biased perceptions based on the targeted application, market value of use, and regulatory requirements. As a result, short-term and simplistic efforts focusing on lethal effects toward individual species and populations prevail. Holistic and comprehensive studies exploring rather common sublethal insecticide exposures are rare, particularly considering their potential role in structuring populations and communities in diverse environmental settings and potentially interfering in a range of ecological interactions...
June 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28822481/function-and-effectiveness-of-natural-refuge-in-irm-strategies-for-bt-crops
#17
REVIEW
Yunhe Li, Yulin Gao, Kongming Wu
Several strategies involving refuge have been proposed for delaying insect resistance to Bt crops. The report was focused on the unstructured 'natural' refuges that contain plants naturally presented as part of the cropping system in the form of non-Bt plants that differ from Bt plant species, or wild host plants of the target pests. The cases of natural refuges applied in different countries were analyzed, and the factors that favor their success are discussed. The results indicate that the effectiveness of a natural refuge strategy depends on the biological characteristics of the target pest, the spatial and temporal distribution and abundance of the host plants in the agricultural system and the quality of the host plants for the pest species...
June 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/28822406/-prediction-of-round-window-visibility-in-cochlear-implantation-with-temporal-bone-high-resolution-computed-tomography
#18
S P Sun, W Lu, Y B Lei, X M Men, B Zuo, S G Ding
Objective: To discuss the prediction of round window(RW) visibility in cochlear implantation(CI) with temporal bone high resolution computed tomography(HRCT). Methods: From January 2013 to January 2017, 130 cases underwent both HRCT and CI in our hospital were analyzed. The distance from facial nerve to posterior canal wall(FWD), the angle between facial nerve and inner margin of round window(FRA), and the angle between facial nerve and tympanic anulus to inner margin of round window(FRAA) were detected at the level of round window on axial temporal bone HRCT...
August 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28822340/endothelial-glycocalyx-biomarkers-increase-in-patients-with-infection-during-emergency-department-treatment
#19
Lisa Smart, Stephen P J Macdonald, Sally Burrows, Erika Bosio, Glenn Arendts, Daniel M Fatovich
PURPOSE: Endothelial glycocalyx (EG) shedding may promote organ failure in sepsis. This study describes temporal changes in EG biomarkers from Emergency Department (ED) arrival, and associations with clinical characteristics. MATERIALS AND METHODS: This prospective observational study included 23 patients with simple infection, 86 with sepsis and 29 healthy controls. Serum EG biomarkers included syndecan-1, syndecan-4 and hyaluronan. Samples were taken on enrolment in the ED (T0), 1 hour (T1), 3 hours (T3) and 12 to 24 hours (T24) later...
July 2, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28822316/improved-middle-ear-soft-tissue-visualization-using-synchrotron-radiation-phase-contrast-imaging
#20
Mai Elfarnawany, Seyed Alireza Rohani, Soroush Ghomashchi, Daniel G Allen, Ning Zhu, Sumit K Agrawal, Hanif M Ladak
High resolution images are used as a basis for finite-element modeling of the middle-ear structures to study their biomechanical function. Commonly used imaging techniques such as micro-computed tomography (CT) and optical microscopy require extensive sample preparation, processing or staining using contrast agents to achieve sufficient soft-tissue contrast. We compare imaging of middle-ear structures in unstained, non-decalcified human temporal bones using conventional absorption-contrast micro-CT and using synchrotron radiation phase-contrast imaging (SR-PCI)...
August 5, 2017: Hearing Research
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