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https://www.readbyqxmd.com/read/28433920/proteomic-analysis-of-sockeye-salmon-serum-as-a-tool-for-biomarker-discovery-and-new-insight-into-the-sublethal-toxicity-of-diluted-bitumen
#1
Sarah L Alderman, Laura A Dindia, Christopher J Kennedy, Anthony P Farrell, Todd E Gillis
Pipelines carrying diluted bitumen (dilbit) from Canada's oil sands traverse North America, including the freshwater habitat of Pacific salmon, posing a risk of environmental release and aquatic exposure. Swimming performance is impacted in juvenile sockeye (Oncorhynchus nerka) exposed to dilbit; therefore biomarkers of dilbit exposure will be valuable for monitoring at-risk salmon stocks. This study characterized changes in the serum proteome of sockeye exposed to a sub-lethal and environmentally relevant concentration of dilbit using isobaric tags for relative and absolute quantitation (iTRAQ), and included a range of experimental conditions to permit identification of biomarkers that are robust across time (1 and 4wk) and exercise level (at rest and following a swim test)...
April 12, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28432942/insights-into-the-diversity-of-nod-like-receptors-identification-and-expression-analysis-of-nlrc3-nlrc5-and-nlrx1-in-rainbow-trout
#2
Claudio A Álvarez, Felipe Ramírez-Cepeda, Paula Santana, Elisa Torres, Jimena Cortés, Fanny Guzmán, Paulina Schmitt, Luis Mercado
Nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) are efficient soluble intracellular sensors that activate defense mechanisms against pathogens. In teleost fish, the involvement of NLRs in the immune response is not well understood. However, recent work has evidenced the expression of different NLRs in response to some pathogen associated molecular patterns (PAMPs). In the present work, the cDNA sequence encoding three new NOD-like receptors were identified in Oncorhynchus mykiss, namely OmNLRC3, OmNLRC5 and OmNLRX1...
April 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28432152/exposure-to-seawater-increases-intestinal-motility-in-euryhaline-rainbow-trout-oncorhynchus-mykiss
#3
Jeroen Brijs, Grant W Hennig, Albin Gräns, Esmée Dekens, Michael Axelsson, Catharina Olsson
Upon exposure to seawater, euryhaline teleosts need to imbibe and desalinate seawater to allow for intestinal ion and water absorption, as this is essential for maintaining osmotic homeostasis. Despite the potential benefits of increased mixing and transport of imbibed water for increasing the efficiency of absorptive processes, the effect of water salinity on intestinal motility in teleosts remains unexplored. By qualitatively and quantitatively describing in vivo intestinal motility of euryhaline rainbow trout (Oncorhynchus mykiss), this study demonstrates that in freshwater, the most common motility pattern consisted of clusters of rhythmic, posteriorly propagating contractions that lasted ∼1-2 minutes followed by a period of quiescence lasting ∼4-5 minutes...
April 21, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28431210/exotic-gill-lice-species-copepoda-lernaeopodidae-salmincola-spp-infect-rainbow-trout-oncorhynchus-mykiss-and-brook-trout-salvelinus-fontinalis-in-the-southeastern-united-states
#4
Carlos F Ruiz, Jacob M Rash, Doug A Besler, Jackson R Roberts, Micah B Warren, Cova R Arias, Stephen A Bullard
Salmincola californiensis infected 25 of 31 (prevalence 0.8; intensity 2-35 [mean 6.6 ± standard deviation 7.7; n = 25]) rainbow trout, Oncorhynchus mykiss, from a private trout farm connected to the Watauga River, North Carolina. Salmincola edwardsii infected all of 9 (1.0; 2-43 [9.3 ± 13.0; 9]) brook trout, Salvelinus fontinalis, from Big Norton Prong, a tributary of the Little Tennessee River, North Carolina. Both lernaeopodids are well-known salmonid pathogens but neither is native to, nor has been previously taxonomically confirmed from, the southeastern United States...
April 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28429822/what-goes-around-comes-around-an-investigation-of-resistance-to-proliferative-kidney-disease-in-rainbow-trout-oncorhynchus-mykiss-walbaum-following-experimental-re-exposure
#5
C Bailey, H Segner, T Wahli
Rainbow trout Oncorhynchus mykiss surviving proliferative kidney disease (PKD) are reported not to develop the disease upon re-exposure. However, the mechanisms involved in the immune response to re-exposure are unknown. We examined disease susceptibility and the immune response of naive 1+ rainbow trout when first exposed to Tetracapsuloides bryosalmonae in comparison with that of 1+ rainbow trout re-exposed to T. bryosalmonae. PKD pathogenesis, parasite burden and transcriptional signatures of the host immune response were assessed at 10, 25 and 40 d...
April 21, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28425455/the-effect-of-hydraulic-flowback-and-produced-water-on-gill-morphology-oxidative-stress-and-antioxidant-response-in-rainbow-trout-oncorhynchus-mykiss
#6
Tamzin A Blewett, Alyssa M Weinrauch, Perrine L M Delompré, Greg G Goss
Hydraulic fracturing fluid are complex mixtures containing high concentrations of salts (up to 330,000 ppm), organic, and metal contaminants. However, little data exist on the potential mechanisms of toxicity of these flowback and produced wastewaters (FPW) on aquatic biota. Juvenile rainbow trout were exposed to either control, FPW (2.5 or 7.5%), FPW that had been treated with activated charcoal (AC), or a custom salt-matched control (SW; replicating only the salt content of FPW) for 48 hours. Gill histology revealed decreases in interlamellar cell mass (ILCM) and mean lamellar length in all treatments (FPW, AC and SW) compared to control, indicative of hyperosmotic stress...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421080/b-cell-functions-can-be-modulated-by-antimicrobial-peptides-in-rainbow-trout-oncorhynchus-mykiss-novel-insights-into-the-innate-nature-of-b-cells-in-fish
#7
Xu-Jie Zhang, Peng Wang, Nu Zhang, Dan-Dan Chen, Pin Nie, Jia-Le Li, Yong-An Zhang
B cells in fish were recently proven to have potent innate immune activities like macrophages. This inspired us to further explore the innate nature of B cells in fish. Moreover, antimicrobial peptides (AMPs) are representative molecules of innate immunity, and they can modulate the functions of macrophages. These make fish an appropriate model to study the interactions between B cells and AMPs. Interestingly, the results in this study revealed that the IgM(+) and IgT(+) B cells of rainbow trout could express multiple AMP genes, including four cathelicidin genes and one β-defensin gene...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28419542/effect-of-nanosilver-on-metabolism-in-rainbow-trout-oncorhynchus-mykiss-an-investigation-using-different-respirometric-approaches
#8
Laura Murray, Michael D Rennie, Jon C Svendsen, Eva C Enders
Nanosilver (nAg) has been incorporated into many consumer products for its antimicrobial properties, including clothing and washing machines. Consequently, the potential for its release into aquatic environments is of significant concern. Documented toxic effects on fish include altered gene expression, gill damage, impaired gas exchange, as well as mortality at high nAg concentrations. This study reports the effects of nAg on the metabolism of Rainbow Trout (Oncorhynchus mykiss). Fish were exposed to environmentally-relevant concentrations (0...
April 17, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28419112/lens-metabolomic-profiling-as-a-tool-to-understand-cataractogenesis-in-atlantic-salmon-and-rainbow-trout-reared-at-optimum-and-high-temperature
#9
Sofie Charlotte Remø, Ernst Morten Hevrøy, Olav Breck, Pål Asgeir Olsvik, Rune Waagbø
Periods of high or fluctuating seawater temperatures result in several physiological challenges for farmed salmonids, including an increased prevalence and severity of cataracts. The aim of the present study was to compare cataractogenesis in Atlantic salmon (Salmo salar L.) and rainbow trout (Oncorhynchus mykiss) reared at two temperatures, and investigate whether temperature influences lens metabolism and cataract development. Atlantic salmon (101±2 g) and rainbow trout (125±3 g) were reared in seawater at either 13°C (optimum for growth) or 19°C during the 35 days experiment (n = 4 tanks for each treatment)...
2017: PloS One
https://www.readbyqxmd.com/read/28410970/insulin-and-insulin-like-growth-factor-1-modulate-the-lipolytic-action-of-growth-hormone-by-altering-signal-pathway-linkages
#10
Heather E Bergan-Roller, Alicia T Ickstadt, Jeffrey D Kittilson, Mark A Sheridan
Growth hormone (GH) has many actions in vertebrates, including the regulation of two disparate metabolic processes: growth promotion (anabolic) and th e mobilization of stored lipids (catabolic). Our previous studies showed that GH stimulated IGF-1 production in hepatocytes from fed rainbow trout, but in cells from fasted fish GH stimulated lipolysis. In this study, we used rainbow trout (Oncorhynchus mykiss) to elucidate regulation of the mechanisms that enable cells to alter their lipolytic responsiveness to GH...
April 11, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28407501/transcriptional-changes-in-innate-immunity-genes-in-head-kidneys-from-aeromonas-salmonicida-challenged-rainbow-trout-fed-a-mixture-of-polycyclic-aromatic-hydrocarbons
#11
Lawrence R Curtis, Claudia F Bravo, Christopher J Bayne, Fred Tilton, Mary R Arkoosh, Elisabetta Lambertini, Frank J Loge, Tracy K Collier, James P Meador, Susan C Tilton
We previously observed that exposure to a complex mixture of high molecular weight polycyclic aromatic hydrocarbons (PAHs) increased sensitivity of rainbow trout (Oncorhynchus mykiss) to subsequent challenge with Aeromonas salmonicida, the causative agent of furunculosis. In this study, we evaluate potential mechanisms associated with disease susceptibility from combined environmental factors of dietary PAH exposure and pathogen challenge. Rainbow trout were fed a mixture of ten high molecular weight PAHs at an environmentally relevant concentration (7...
April 10, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28405298/seasonal-and-temperature-related-movement-of-colorado-river-cutthroat-trout-in-a-low-elevation-rocky-mountain-stream
#12
Brian W Hodge, Kyle D Battige, Kevin B Rogers
Mobile species will migrate considerable distances to find habitats suitable for meeting life history requirements, and stream-dwelling salmonids are no exception. In April-October 2014, we used radio-telemetry to examine habitat use and movement of 36 Colorado River cutthroat trout Oncorhynchus clarkii pleuriticus (CRCT) in a 14.9-km fragment of Milk Creek, a relatively low-elevation stream in the Rocky Mountains (Colorado). We also used a network of data loggers to track stream temperature across time and space...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28391306/unstable-linkage-of-molecular-markers-with-sex-determination-gene-in-pacific-salmon-oncorhynchus-spp
#13
Aleksandr V Podlesnykh, Vladimir A Brykov, Andrey D Kukhlevsky
In the present study, we tested the congruence between the sdY sex-specific marker and other commonly used male markers, located on the Y-chromosome, with the sex phenotypes in 5 species of Pacific salmon in Asian waters, including Chinook, chum, sockeye, masu, and pink salmon. We found that the localization of the sex-specific marker of both males and females of these species is not consistent with the phenotypic sex. Also, no linkage was found between noncoding markers and the sdY gene in the same species samples...
May 1, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28387056/effects-of-ovarian-fluid-and-genetic-differences-on-sperm-performance-and-fertilization-success-of-alternative-reproductive-tactics-in-chinook-salmon
#14
Sarah J Lehnert, Ian A E ButtS, Erin W Flannery, Kia M Peters, Daniel D Heath, Trevor E Pitcher
In many species, sperm velocity affects variation in the outcome of male competitive fertilization success. In fishes, ovarian fluid (OF) released with the eggs can increase male sperm velocity and potentially facilitate cryptic female choice for males of specific phenotypes and/or genotypes. Therefore, to investigate the role of OF on fertilization success, we measured sperm velocity and conducted in vitro competitive fertilizations with paired Chinook salmon (Oncorhynchus tshawytscha) males representing two alternative reproductive tactics, jacks (small sneaker males) and hooknoses (large guarding males), in the presence of river water alone and OF mixed with river water...
April 7, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28381310/biochemical-histopathologic-physiologic-and-behavioral-effects-of-nonsteroidal-antiinflammatory-drugs-in-rainbow-trout-oncorhynchus-mykiss
#15
Amy L Rizzo, Gregory A Wooster, Luce E Guanzini, Christine M Peterson, Karryssas Fenderson, Hollis N Erb, Paul R Bowser, Mary E Martin
Because the number of fish being used in research is increasing rapidly, evaluating the analgesic and pathologic effects of NSAID in fish is essential. To determine the biochemical, histopathologic, physiologic and behavioral effects of 3 NSAID, 48 rainbow trout underwent anesthesia with tricaine methanesulfonate and exploratory celiotomy and were randomly assigned to receive flunixin (0.5 mg/kg IM), ketorolac (0.5 mg/kg IM), ketoprofen (2 mg/kg IM), or saline. Clinical pathologic variables were assessed 1 wk before surgery and 48 h after surgery...
March 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28377114/uptake-and-selective-partitioning-of-dietary-lipids-to-ovarian-and-muscle-tissue-of-maturing-female-coho-salmon-oncorhynchus-kisutch-during-secondary-oocyte-growth
#16
Ronald B Johnson, Eric L Kroeger, William L Reichert, Cameron S Carter, Michael B Rust
Female coho salmon, Oncorhynchus kisutch, were fed one of two experimental feeds containing lipids with markedly different stable (13)C isotope signatures during the late cortical alveolus, lipid droplet, and vitellogenesis stages of secondary oocyte growth. Ovarian and muscle lipids fatty acid concentrations were significantly affected by treatment during all three stages of development. Stable (13)C isotope analyses confirmed that dietary lipids were incorporated into both ovarian and muscle lipids during all three stages and revealed that ovarian lipids were more affected than muscle lipids during vitellogenesis...
April 1, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28374170/invitromatics-invitrome-and-invitroomics-introduction-of-three-new-terms-for-in-vitro-biology-and-illustration-of-their-use-with-the-cell-lines-from-rainbow-trout
#17
REVIEW
Niels C Bols, Phuc H Pham, Vivian R Dayeh, Lucy E J Lee
The literature on cell lines that have been developed from rainbow trout (RT) (Oncorhynchus mykiss) is reviewed to illustrate three new terms: invitromatics, invitrome, and invitroomics. Invitromatics is defined as the history, development, characterization, engineering, storage, and sharing of cell lines. RT invitromatics differs from invitromatics for humans and other mammals in several ways. Nearly all the RT cell lines have developed through spontaneous immortalization. No RT cell line undergoes senescence and can be described as being finite, whereas many human cell lines undergo senescence and are finite...
April 3, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28372487/nocardiosis-in-freshwater-reared-chinook-salmon-oncorhynchus-tshawytscha
#18
C L Brosnahan, S Humphrey, G Knowles, H J Ha, A Pande, J B Jones
CASE HISTORY: An investigation was conducted to identify the cause of mortalities in freshwater reared Chinook salmon (Oncorhynchus tshawytscha). Mortalities occurred in juvenile salmon, at a salmon rearing facility in the South Island of New Zealand. The affected fish were from a pen inside the facility with no surrounding pens or other year classes affected. CLINICAL FINDINGS: Clinically affected fish presented with skin lesions. The majority of skin lesions were unruptured, boil-like, raised circular masses up to 4 cm in diameter, particularly on the dorsolateral aspects and the flank...
April 3, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28365405/novel-insights-into-cardiac-remodelling-revealed-by-proteomic-analysis-of-the-trout-heart-during-exercise-training
#19
Laura A Dindia, Sarah L Alderman, Todd E Gillis
The changes in the cardiac proteome of rainbow trout (Oncorhynchus mykiss) were quantified during the early phases (4, 7, and 14d) of a typical exercise-training regime to provide a comprehensive overview of the cellular changes responsible for developing a trained heart phenotype. Enhanced somatic growth during the 14d experiment was paralleled by cardiac growth to maintain relative ventricular mass. This was reflected in the cardiac proteome by the increased abundance of contractile proteins and cellular integrity proteins as early as Day 4, including a pronounced and sustained increase in blood vessel epicardial substance - an intercellular adhesion protein expressed in the vertebrate heart...
March 29, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28365313/transcriptome-analysis-provides-insights-into-hepatic-responses-to-moderate-heat-stress-in-the-rainbow-trout-oncorhynchus-mykiss
#20
Yongjuan Li, Jinqiang Huang, Zhe Liu, Yanjing Zhou, Binpeng Xia, Yongjie Wang, Yujun Kang, Jianfu Wang
The rainbow trout is an economically important fish in the world. The limited stress tolerance of this species to high summer-like temperatures usually leads to mass mortality and great economic loss. However, there is limited information on the mechanisms underlying moderate heat responses in the liver of the rainbow trout. Here, we performed transcriptome profiling of rainbow trout liver under moderate heat stress by using the Hiseq™ 4000 sequencing platform. >277 million clean reads were obtained from 6 libraries and aligned against the rainbow trout genome...
March 29, 2017: Gene
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