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https://www.readbyqxmd.com/read/28227691/understanding-the-cochlear-implant-environment-by-mapping-perilymph-proteomes-from-different-species
#1
Jonathan C Palmer, Megan S Lord, Jeremy L Pinyon, Andrew K Wise, Nigel H Lovell, Paul M Carter, Ya Lang Enke, Gary D Housley, Rylie A Green, Jonathan C Palmer, Megan S Lord, Jeremy L Pinyon, Andrew K Wise, Nigel H Lovell, Paul M Carter, Ya Lang Enke, Gary D Housley, Rylie A Green, Ya Lang Enke, Rylie A Green, Jonathan C Palmer, Nigel H Lovell, Paul M Carter, Jeremy L Pinyon, Gary D Housley, Andrew K Wise, Megan S Lord
Cochlear implants operate within a bony channel of the cochlea, bathed in a fluid known as the perilymph. The perilymph is a complex fluid containing ions and proteins, which are known to actively interact with metallic electrodes. To improve our understanding of how cochlear implant performance varies in preclinical in vivo studies in comparison to human trials and patient outcomes, the protein composition (or perilymph proteome) is needed. Samples of perilymph were gathered from feline and guinea pig subjects and analyzed using liquid chromatography with tandem mass spectrometry (LC-MS/MS) to produce proteomes and compare against the recently published human proteome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227621/non-contact-automatic-respiration-monitoring-in-restrained-rodents
#2
Behnaz Rezaei, Jared Lowe, Jason R Yee, Stephen Porges, Sarah Ostadabbas, Behnaz Rezaei, Jared Lowe, Jason R Yee, Stephen Porges, Sarah Ostadabbas, Sarah Ostadabbas, Jason R Yee, Stephen Porges, Jared Lowe, Behnaz Rezaei
Prairie voles are socially monogamous rodents that form social bonds similar to those seen in primates. Social behavior investigation in these species, that include studying their breathing regulation, can provide us with an invaluable psychological model to understand social and emotional functions in both animals and humans. There have been several studies associated with the respiratory pattern of these species in the state of fear-induced defense. However, non-invasive measurement methods employed so far suffer from the lack of a natural experiment environment for the rodents...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227465/reaction-mechanism-of-blood-coagulation-factors-in-shear-flow-field
#3
Koki Kawakami, Daisuke Sakota, Ryo Kosaka, Masahiro Nishida, Yasuo Kawaguchi, Osamu Maruyama, Koki Kawakami, Daisuke Sakota, Ryo Kosaka, Masahiro Nishida, Yasuo Kawaguchi, Osamu Maruyama, Masahiro Nishida, Koki Kawakami, Ryo Kosaka, Yasuo Kawaguchi, Osamu Maruyama, Daisuke Sakota
Thrombus formation in blood pumps is a major problem. It has been reported that the shear rate is closely related to thrombus formation in blood pumps; however, the mechanism of blood coagulation in a shear flow field is not yet fully understood. The purpose of this study is to evaluate the effect of shear loading on the reaction of blood coagulation factors quantitatively. Human blood and porcine blood were used as test blood and sheared at 2,880 s(-1) for 3 h using a rheometer. After shear loading to the test blood, the activated partial thromboplastin time (APTT) and prothrombin time (PT) of sample plasma were measured using an automated coagulation analyzer...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226785/mechanisms-of-stochastic-focusing-and-defocusing-in-biological-reaction-networks-insight-from-accurate-chemical-master-equation-acme-solutions
#4
Gamze Giirsoy, Anna Terebus, Youfang Cao, Jie Liang, Gamze Gursoy, Anna Terebus, Youfang Cao, Jie Liang, Gamze Gursoy, Youfang Cao, Anna Terebus, Jie Liang
Stochasticity plays important roles in regulation of biochemical reaction networks when the copy numbers of molecular species are small. Studies based on Stochastic Simulation Algorithm (SSA) has shown that a basic reaction system can display stochastic focusing (SF) by increasing the sensitivity of the network as a result of the signal noise. Although SSA has been widely used to study stochastic networks, it is ineffective in examining rare events and this becomes a significant issue when the tails of probability distributions are relevant as is the case of SF...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226278/quantitative-methylene-blue-decolourisation-assays-as-rapid-screening-tools-for-assessing-the-efficiency-of-catalytic-reactions
#5
Jan Kruid, Ronen Fogel, Janice Leigh Limson
Identifying the most efficient oxidation process to achieve maximum removal of a target pollutant compound forms the subject of much research. There exists a need to develop rapid screening tools to support research in this area. In this work we report on the development of a quantitative assay as a means for identifying catalysts capable of decolourising methylene blue through the generation of oxidising species from hydrogen peroxide. Here, a previously described methylene blue test strip method was repurposed as a quantitative, aqueous-based spectrophotometric assay...
February 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28226269/the-causes-and-consequences-of-dna-methylome-variation-in-plants
#6
REVIEW
Danelle K Seymour, Claude Becker
Epigenetic variation - polymorphisms at the level of DNA methylation or histone modifications - modulates chromatin accessibility, which can perturb transcriptional activity and spur phenotypic variation. Determining the origin, frequency spectrum, and consequences of epigenetic variants is key to understanding the role of this variation in generating stable phenotypic variation in plants. Here we review recent literature on DNA methylation variation in both model and crop plant species with a focus on the link between genotype, epigenotype, and transcription...
February 19, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28226263/comparing-impacts-between-formal-and-informal-recreational-trails
#7
Catherine Marina Pickering, Patrick Norman
Globally there are hundreds of thousands of kilometres of recreational trails traversing natural areas of high conservation value: but what are their impacts and do impacts differ among trails? We compared the effects of four common types of recreational trails [(1) narrow and (2) medium width informal bare earth trails and (3) gravel and (4) tarmac/concrete formal trails] on vegetation adjacent to trails in a high conservation value plant community that is popular for mountain biking and hiking in Australia...
February 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28226237/novel-insights-into-tree-biology-and-genome-evolution-as-revealed-through-genomics
#8
David B Neale, Pedro J Martínez-García, Amanda R De La Torre, Sara Montanari, Xiao-Xin Wei
Reference genome sequences are the key to the discovery of genes and gene families that determine traits of interest. Recent progress in sequencing technologies has enabled a rapid increase in genome sequencing of tree species, allowing the dissection of complex characters of economic importance, such as fruit and wood quality and resistance to biotic and abiotic stresses. Although the number of reference genome sequences for trees lags behind those for other plant species, it is not too early to gain insight into the unique features that distinguish trees from nontree plants...
February 6, 2017: Annual Review of Plant Biology
https://www.readbyqxmd.com/read/28226235/plant-mitochondrial-genomes-dynamics-and-mechanisms-of-mutation
#9
José M Gualberto, Kathleen J Newton
The large mitochondrial genomes of angiosperms are unusually dynamic because of recombination activities involving repeated sequences. These activities generate subgenomic forms and extensive genomic variation even within the same species. Such changes in genome structure are responsible for the rapid evolution of plant mitochondrial DNA and for the variants associated with cytoplasmic male sterility and abnormal growth phenotypes. Nuclear genes modulate these processes, and over the past decade, several of these genes have been identified...
February 9, 2017: Annual Review of Plant Biology
https://www.readbyqxmd.com/read/28226230/genomics-physiology-and-molecular-breeding-approaches-for-improving-salt-tolerance
#10
Abdelbagi M Ismail, Tomoaki Horie
Salt stress reduces land and water productivity and contributes to poverty and food insecurity. Increased salinization caused by human practices and climate change is progressively reducing agriculture productivity despite escalating calls for more food. Plant responses to salt stress are fairly well understood, involving numerous critical processes that are each controlled by multiple genes. Knowledge of the critical mechanisms controlling salt uptake and exclusion from functioning tissues, signaling of salt stress, and the arsenal of protective metabolites is advancing...
February 22, 2017: Annual Review of Plant Biology
https://www.readbyqxmd.com/read/28226194/melatonin-systemically-ameliorates-drought-stress-induced-damage-in-medicago-sativa-plants-by-modulating-nitro-oxidative-homeostasis-and-proline-metabolism
#11
Chrystalla Antoniou, Giannis Chatzimichail, Rafaella Xenofontos, Giannis Pavlou, Evangelia Panagiotou, Anastasis Christou, Vasileios Fotopoulos
Recent reports have uncovered the multifunctional role of melatonin in plant physiological responses under optimal and sub-optimal environmental conditions. In this study, we explored whether melatonin pretreatment could provoke priming effects in alfalfa (Medicago sativa L.) plants subsequently exposed to prolonged drought stress (7 days), by withholding watering. Results revealed that the rhizospheric application of melatonin (10 μM) remarkably enhanced the drought tolerance of alfalfa plants, as evidenced by the observed plant tolerant phenotype, as well as by the higher levels of chlorophyll fluorescence and stomatal conductance, compared with non-treated drought-stressed plants...
February 22, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28226018/profile-of-human-anti-rabies-treatment-in-the-agreste-region-of-pernambuco-state-brazil-2010-2012
#12
Cleber Vinicius Brito Dos Santos, Rafaely Bezerra de Melo, Daniel Friguglietti Brandespim
Objective: to describe the characteristics of reported human anti-rabies treatment in municipalities of the 'agreste' region of Pernambuco State, Brazil, 2010-2012. Methods: this was a descriptive study using data from human anti-rabies medical records filed on the Information System for Notifiable Diseases (Sinan). Results: 10,138 reported records of anti-rabies treatment were included; canines were the most involved species (68.1%), in good health condition (79...
January 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/28225906/the-current-status-of-the-lutzomyia-longipalpis-diptera-psychodidae-phlebotominae-species-complex
#13
Nataly A Souza, Reginaldo P Brazil, Alejandra S Araki
Lutzomyia longipalpis s.l. is a complex of sibling species and is the principal vector of American visceral leishmaniasis. The present review summarises the diversity of efforts that have been undertaken to elucidate the number of unnamed species in this species complex and the phylogenetic relationships among them. A wide variety of evidence, including chemical, behavioral and molecular traits, suggests very recent speciation events and complex population structure in this group. Although significant advances have been achieved to date, differential vector capacity and the correlation between structure of parasite and vector populations have yet to be elucidated...
March 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28225905/comparison-of-four-molecular-approaches-to-identify-candida-parapsilosis-complex-species
#14
Leonardo Silva Barbedo, Maria Helena Galdino Figueiredo-Carvalho, Mauro de Medeiros Muniz, Rosely Maria Zancopé-Oliveira
Since the description of Candida orthopsilosis and C. metapsilosis in 2005, several methods have been proposed to identify and differentiate these species from C. parapsilosis sensu stricto. Species-specific uniplex polymerase chain reaction (PCR) was performed and compared with sequencing of the D1/D2 region of the LSU 28S rDNA gene, microsatellite typing of C. parapsilosis sensu stricto, and PCR-restriction fragment length polymorphism patterns in the ITS1-5.8S-ITS2 region of the rDNA gene. There was agreement between results of testing of 98 clinical isolates with the four PCR-based methods, with 59 isolates identified as C...
March 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28225899/comparison-of-four-molecular-approaches-to-identify-candida-parapsilosis-complex-species
#15
Leonardo Silva Barbedo, Maria Helena Galdino Figueiredo-Carvalho, Mauro de Medeiros Muniz, Rosely Maria Zancopé-Oliveira
Since the description of Candida orthopsilosis and C. metapsilosis in 2005, several methods have been proposed to identify and differentiate these species from C. parapsilosis sensu stricto. Species-specific uniplex polymerase chain reaction (PCR) was performed and compared with sequencing of the D1/D2 region of the LSU 28S rDNA gene, microsatellite typing of C. parapsilosis sensu stricto, and PCR-restriction fragment length polymorphism patterns in the ITS1-5.8S-ITS2 region of the rDNA gene. There was agreement between results of testing of 98 clinical isolates with the four PCR-based methods, with 59 isolates identified as C...
February 16, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28225825/validation-of-band-counts-in-eyestalks-for-the-determination-of-age-of-antarctic-krill-euphausia-superba
#16
Raouf Kilada, Christian S Reiss, So Kawaguchi, Robert A King, Tsuyoshi Matsuda, Taro Ichii
Using known-age Antarctic krill (Euphausia superba) grown from eggs hatched at two different laboratories, we validate the annual pattern of bands deposited in the eyestalks of krill and determine the absolute age of these animals. Ages two through five years were validated, and these animals ranged from 37.1 to 62.6 mm in total length. The band counts in these individuals were either identical to their absolute ages, or only failed to agree by a few months, which demonstrates the accuracy of this method. Precision and bias were estimated graphically using Chang's index (Coefficient of Variation = 5...
2017: PloS One
https://www.readbyqxmd.com/read/28225823/a-novel-approach-to-eliminate-detection-of-contaminating-staphylococcal-species-introduced-during-clinical-testing
#17
Wanyuan Ao, Adrianne Clifford, Maylene Corpuz, Robert Jenison
We describe here a strategy that can distinguish between Staphylococcus species truly present in a clinical sample from contaminating Staphylococcus species introduced during the testing process. Contaminating Staphylococcus species are present at low levels in PCR reagents and colonize lab personnel. To eliminate detection of contaminants, we describe an approach that utilizes addition of sufficient quantities of either non-target Staphylococcal cells (Staphylococcus succinus or Staphylococcus muscae) or synthetic oligonucleotide templates to helicase dependent isothermal amplification reactions to consume Staphylococcus-specific tuf and mecA gene primers such that contaminating Staphylococcus amplification is suppressed to below assay limits of detection...
2017: PloS One
https://www.readbyqxmd.com/read/28225817/binational-climate-change-vulnerability-assessment-of-migratory-birds-in-the-great-lakes-basins-tools-and-impediments
#18
Robert S Rempel, Megan L Hornseth
Climate change is a global concern, requiring international strategies to reduce emissions, however, climate change vulnerability assessments are often local in scope with assessment areas restricted to jurisdictional boundaries. In our study we explored tools and impediments to understanding and responding to the effects of climate change on vulnerability of migratory birds from a binational perspective. We apply and assess the utility of a Climate Change Vulnerability Index on 3 focal species using distribution or niche modeling frameworks...
2017: PloS One
https://www.readbyqxmd.com/read/28225788/molecular-detection-and-genotyping-of-enteroviruses-from-csf-samples-of-patients-with-suspected-sepsis-like-illness-and-or-aseptic-meningitis-from-2012-to-2015-in-west-bank-palestine
#19
Kamal Dumaidi, Amer Al-Jawabreh
BACKGROUND: Human enteroviruses (HEVs) are the most frequently reported cause of aseptic meningitis with or without CSF pleocytosis in childhood. Rapid detection and genotype of HEVs is essential to determine the causative agent and variant causing sepsis-like illness and/or aseptic meningitis. AIM: To investigate the molecular epidemiology of enteroviruses (EVs) among patients with sepsis-like illness and/or aseptic meningitis admitted to three major hospitals in West Bank, Palestine from 2012 to 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28225787/forest-dynamics-in-the-u-s-indicate-disproportionate-attrition-in-western-forests-rural-areas-and-public-lands
#20
Sheng Yang, Giorgos Mountrakis
Forests are experiencing significant changes; studying geographic patterns in forests is critical in understanding the impact of forest dynamics to biodiversity, soil erosion, water chemistry and climate. Few studies have examined forest geographic pattern changes other than fragmentation; however, other spatial processes of forest dynamics are of equal importance. Here, we study forest attrition, the complete removal of forest patches, that can result in complete habitat loss, severe decline of population sizes and species richness, and shifts of local and regional environmental conditions...
2017: PloS One
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