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https://www.readbyqxmd.com/read/28712873/the-effect-of-oil-sands-tailings-pond-sediments-on-embryo-larval-walleye-sander-vitreus
#1
J C Raine, D Turcotte, V Tumber, K M Peru, Z Wang, C Yang, J V Headley, J L Parrott
Walleye (Sander vitreus) are a commercially important North American fish species that inhabit the Athabasca River. This river flows through the Athabasca oil sands where natural sources of bitumen erode from the McMurray formation. Little information is available on responses of walleye embryos to oil sands tailings pond sediments in a laboratory setting. The current study describes the design and implementation of a daily-renewal bioassay to assess the potential effects of tailings pond sediments from the Athabasca oil sands area on walleye development...
July 13, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28708521/flow-cytometric-enrichment-of-pacific-bluefin-tuna-type-a-spermatogonia-based-on-light-scattering-properties
#2
REVIEW
Kensuke Ichida, Kazuyoshi Kise, Tetsuro Morita, Ryosuke Yazawa, Yutaka Takeuchi, Goro Yoshizaki
We previously established surrogate broodstock in which the donor germ cells transplanted into the peritoneal cavities of xenogeneic recipients were capable of developing into functional eggs and sperm in teleost fish. In this transplantation system, only the undifferentiated germ cells such as type A spermatogonia (ASG) or a portion of the ASG population were capable of being incorporated into the genital ridges of the recipients and undergo gametogenesis. Therefore, the use of enriched ASGs can be expected to achieve efficient donor-cell incorporation...
June 22, 2017: Theriogenology
https://www.readbyqxmd.com/read/28707626/performance-of-neural-networks-for-localizing-moving-objects-with-an-artificial-lateral-line
#3
Luuk H Boulogne, Ben J Wolf, Marco A Wiering, Sietse M van Netten
Fish are able to sense water flow velocities relative to their body with their mechanoreceptive lateral line organ. This organ consists of an array of flow detectors distributed along the fish body. Using the excitation of these individual detectors, fish can determine the location of nearby moving objects. Inspired by this sensory modality, it is shown here how neural networks can be used to extract an object's location from simulated excitation patterns, such as can be measured along arrays of stationary artificial flow velocity sensors...
July 14, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28704673/contributions-of-combined-sewer-overflows-and-treated-effluents-to-the-bacterial-load-released-into-a-coastal-area
#4
M Al Aukidy, P Verlicchi
The impact of combined sewer overflow (CSO) on the receiving water body is an issue of increasing concern, as it may lead to restrictions in the use and destination of the receiving body, such as bathing or recreational area closures, fish and shellfish consumption restrictions, and contamination of drinking water resources. Recent investigations have mainly referred to the occurrence and loads of suspended solids, organic compounds and, in some cases, micropollutants. Attempts have been made to find correlations between the discharged load and the size and characteristics of the catchment area, climate conditions, rainfall duration and intensity...
July 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28700578/a-novel-mechanism-for-mechanosensory-based-rheotaxis-in-larval-zebrafish
#5
Pablo Oteiza, Iris Odstrcil, George Lauder, Ruben Portugues, Florian Engert
When flying or swimming, animals must adjust their own movement to compensate for displacements induced by the flow of the surrounding air or water. These flow-induced displacements can most easily be detected as visual whole-field motion with respect to the animal's frame of reference. Despite this, many aquatic animals consistently orient and swim against oncoming flows (a behaviour known as rheotaxis) even in the absence of visual cues. How animals achieve this task, and its underlying sensory basis, is still unknown...
July 12, 2017: Nature
https://www.readbyqxmd.com/read/28700572/biomechanics-how-fish-feel-the-flow
#6
John O Dabiri
No abstract text is available yet for this article.
July 12, 2017: Nature
https://www.readbyqxmd.com/read/28699666/apoptosis-inhibition-of-atlantic-salmon-salmo-salar-peritoneal-macrophages-by-piscirickettsia-salmonis
#7
S Díaz, M E Rojas, M Galleguillos, C Maturana, P I Smith, F Cifuentes, I Contreras, P A Smith
To improve the understanding of the piscirickettsiosis pathogenesis, the in vivo apoptosis modulation of peritoneal macrophages and lymphocytes was studied in juvenile Salmo salar intraperitoneally injected with Piscirickettsia salmonis. Five fish were sampled at post-exposure days 1, 5, 8 (preclinical), 20 (clinical) and 40 (post-clinical period of the disease), and the leucocytes of their coelomic washings were analysed by flow cytometry (using the JC-1 cationic dye), TUNEL and cytology to detect apoptotic cells...
July 12, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28698276/a-novel-single-cell-fish-flow-assay-identifies-effector-memory-cd4-t-cells-as-a-major-niche-for-hiv-1-transcription-in-hiv-infected-patients
#8
Judith Grau-Expósito, Carla Serra-Peinado, Lucia Miguel, Jordi Navarro, Adrià Curran, Joaquin Burgos, Imma Ocaña, Esteban Ribera, Ariadna Torrella, Bibiana Planas, Rosa Badía, Josep Castellví, Vicenç Falcó, Manuel Crespo, Maria J Buzon
Cells that actively transcribe HIV-1 have been defined as the "active viral reservoir" in HIV-infected individuals. However, important technical limitations have precluded the characterization of this specific viral reservoir during both treated and untreated HIV-1 infections. Here, we used a novel single-cell RNA fluorescence in situ hybridization-flow cytometry (FISH-flow) assay that requires only 15 million unfractionated peripheral blood mononuclear cells (PBMCs) to characterize the specific cell subpopulations that transcribe HIV RNA in different subsets of CD4(+) T cells...
July 11, 2017: MBio
https://www.readbyqxmd.com/read/28689637/measurement-of-flow-of-thought-in-68-patients-monitored-in-post-emergency-outpatient-consultations-role-of-ideational-turmoil-in-the-anxiety-depressive-symptomatology
#9
J Vandevoorde, A Sanchez Valero, E Baudoin, S Kamar, B Chabert, T Baudoin
INTRODUCTION: Rumination, cognitive control deficits, cognitive saturation, and loss of inhibition are the major hypotheses used to explain depressive disorders. A few studies have nevertheless looked at the form of thought. In this study, we will test a double measurement of the number of thoughts and a double measurement of the flow of thought together with their correlation with well-being, mental pain, and depression. MATERIAL AND METHODS: Between May and September 2015, 68 subjects, initially admitted as emergencies for acute anxiety depressive disorders and/or suicide attempts and subsequently monitored as post-emergency outpatients in medico-psychological consultations agreed to complete a set of Visual Analogue Scales measuring their well-being, their mental pain, their estimated number of thoughts and the how agitated these thoughts are estimated to be...
July 6, 2017: L'Encéphale
https://www.readbyqxmd.com/read/28681975/exposure-effects-of-levonorgestrel-on-oogenesis-in-the-fathead-minnow-pimephales-promelas
#10
Tyler Frankel, Lance Yonkos, Jack Frankel
The synthetic progestin levonorgestrel (LNG) is commonly utilized as a component of human oral contraceptives. LNG enters the environment as a component of wastewater treatment plant effluent, and has been measured at low ng/L concentrations in surface waters. LNG has been shown to activate fish androgen receptors, causing the physical masculinization of females, changes in reproductive behavior, and decreases in fecundity. In this present study, the effects of LNG exposure on early stage oogenesis in the fathead minnow (Pimephales promelas) was examined...
July 6, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28679792/hydrodynamic-sensory-threshold-in-harbour-seals-phoca-vitulina-for-artificial-flatfish-breathing-currents
#11
Benedikt Niesterok, Guido Dehnhardt, Wolf Hanke
Harbour seals have the ability to detect benthic fish such as flatfish using the water currents these fish emit through their gills (breathing currents). We investigated the sensory threshold in harbour seals for this specific hydrodynamic stimulus under conditions which are realistic for seals hunting in the wild. We used an experimental platform where an artificial breathing current was emitted through one of eight different nozzles. Two seals were trained to search for the active nozzle. Each experimental session consisted of eight test trials of a particular stimulus intensity and 16 supra-threshold trials of high stimulus intensity...
July 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28678798/use-of-navigation-channels-by-lake-sturgeon-does-channelization-increase-vulnerability-of-fish-to-ship-strikes
#12
Darryl W Hondorp, David H Bennion, Edward F Roseman, Christopher M Holbrook, James C Boase, Justin A Chiotti, Michael V Thomas, Todd C Wills, Richard G Drouin, Steven T Kessel, Charles C Krueger
Channelization for navigation and flood control has altered the hydrology and bathymetry of many large rivers with unknown consequences for fish species that undergo riverine migrations. In this study, we investigated whether altered flow distributions and bathymetry associated with channelization attracted migrating Lake Sturgeon (Acipenser fulvescens) into commercial navigation channels, potentially increasing their exposure to ship strikes. To address this question, we quantified and compared Lake Sturgeon selection for navigation channels vs...
2017: PloS One
https://www.readbyqxmd.com/read/28675881/making-sense-of-the-noise-the-effect-of-hydrology-on-silver-carp-edna-detection-in-the-chicago-area-waterway-system
#13
Jeffery W Song, Mitchell J Small, Elizabeth A Casman
Environmental DNA (eDNA) sampling is an emerging tool for monitoring the spread of aquatic invasive species. One confounding factor when interpreting eDNA sampling evidence is that eDNA can be present in the water in the absence of living target organisms, originating from excreta, dead tissue, boats, or sewage effluent, etc. In the Chicago Area Waterway System (CAWS), electric fish dispersal barriers were built to prevent non-native Asian carp species from invading Lake Michigan, and yet Asian carp eDNA has been detected above the barriers sporadically since 2009...
July 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28667932/combined-effects-of-water-stress-and-pollution-on-macroinvertebrate-and-fish-assemblages-in-a-mediterranean-intermittent-river
#14
Eleni Kalogianni, Aikaterini Vourka, Ioannis Karaouzas, Leonidas Vardakas, Sofia Laschou, Nikolaos Th Skoulikidis
Water stress is a key stressor in Mediterranean intermittent rivers exacerbating the negative effects of other stressors, such as pollutants, with multiple effects on different river biota. The current study aimed to determine the response of macroinvertebrate and fish assemblages to instream habitat and water chemistry, at the microhabitat scale and at different levels of water stress and pollution, in an intermittent Mediterranean river. Sampling was conducted at high and low summer discharge, at two consecutive years, and included four reaches that were targeted for their different levels of water stress and pollution...
June 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28666033/dorso-ventral-skin-characterization-of-the-farmed-fish-gilthead-seabream-sparus-aurata
#15
Héctor Cordero, Diana Ceballos-Francisco, Alberto Cuesta, María Ángeles Esteban
The skin is the first barrier of defence in fish, protecting against any external stressor and preserving the integrity and homeostasis of the fish body. The aim of this study was to characterise gilthead seabream skin by isolating cells and studying the cell cycle by flow cytometry, to study the skin histology by scanning electron microscopy and the transcription level of some immune-relevant genes by RT-PCR. Furthermore, the results obtained from samples taken from the dorsal and the ventral part of the specimens are compared...
2017: PloS One
https://www.readbyqxmd.com/read/28657128/sea-ice-loss-boosts-visual-search-fish-foraging-and-changing-pelagic-interactions-in-polar-oceans
#16
Tom J Langbehn, Øystein Varpe
Light is a central driver of biological processes and systems. Receding sea-ice changes the lightscape of high-latitude oceans and more light will penetrate into the sea. This affects bottom-up control through primary productivity and top-down control through vision-based foraging. We model effects of sea-ice shading on visual search to develop a mechanistic understanding of how climate-driven sea-ice retreat affects predator-prey interactions. We adapt a prey encounter model for ice-covered waters, where prey-detection performance of planktivorous fish depends on the light cycle...
June 28, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28653157/computational-analysis-on-down-regulated-images-of-macrophage-scavenger-receptor
#17
Byeongtaek Oh, Yugyung Lee, Mingui Fu, Chi H Lee
BACKGROUND: Thiolated-graphene quantum dots (SH-GQDs) were developed and assessed for an efficient preventive means against atherosclerosis and potential toxicity through computational image analysis and animal model studies. EXPERIMENTS: Zebrafish (wild-type, wt) were used for evaluation of toxicity through the assessment of embryonic mortality, malformation and ROS generation. The amounts of SH-GQDs uptaken by mouse macrophage cells (Raw264.7) were analyzed using a flow cytometer...
June 26, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28651931/upregulated-long-non-coding-rna-loc90784-promotes-cell-proliferation-and-invasion-and-is-associated-with-poor-clinical-features-in-hcc
#18
Jian-Hua Xu, Wei-Hua Chang, Hang-Wei Fu, Wei-Qun Shu, Tao Yuan, Ping Chen
A growing amount of literature has indicated that long non-coding RNAs (lncRNAs) are important factors in hepatocellular carcinoma (HCC) progression. However, the significance of lncRNAs in the progression and prognosis of liver cancer is largely unknown. In the present study, upregulated lncRNA LOC90784 was identified through integrative analysis of GSE58043 and GSE55191. Furthermore, associations between LOC90784 expression and the clinicopathological characteristics of patients were analyzed with a validated cohort 1 and the Cancer Genome Atlas (TCGA) cohort 2...
June 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28649324/conceptualising-the-interactive-effects-of-climate-change-and-biological-invasions-on-subarctic-freshwater-fish
#19
REVIEW
Robert J Rolls, Brian Hayden, Kimmo K Kahilainen
Climate change and species invasions represent key threats to global biodiversity. Subarctic freshwaters are sentinels for understanding both stressors because the effects of climate change are disproportionately strong at high latitudes and invasion of temperate species is prevalent. Here, we summarize the environmental effects of climate change and illustrate the ecological responses of freshwater fishes to these effects, spanning individual, population, community and ecosystem levels. Climate change is modifying hydrological cycles across atmospheric, terrestrial and aquatic components of subarctic ecosystems, causing increases in ambient water temperature and nutrient availability...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28644154/acute-promyelocytic-leukemia-and-chronic-lymphocytic-leukemia-concomitant-presentation-of-two-molecularly-distinct-entities
#20
Jingdong Su, Diana Veillon, Rodney Shackelford, James Cotelingam, Hazem El-Osta, Glenn Mills, Reinhold Munker, Srinivas Devarakonda
Acute myeloid leukemia (AML) developing in patients with chronic lymphocytic leukemia (CLL) is very uncommon and usually associated with prior treatment. Acute promyelocytic leukemia (APL) accounts for a very small proportion of treatment-associated AML. So far, there has been only one reported case of APL occurring post radiation for prostate cancer in a patient with CLL. We report herein the first case of APL and CLL presenting concomitantly in an untreated patient. Evaluation of peripheral blood and bone marrow aspirate with immunohistochemistry, flow cytometry, and FISH to confirm two morphologically, molecularly and genetically distinct leukemic populations characteristic of APL and CLL is required...
May 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
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