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https://www.readbyqxmd.com/read/28324676/comparison-of-selected-nonlethal-samples-from-adult-steelhead-for-detection-of-infectious-hematopoietic-necrosis-virus-using-cell-culture
#1
David R Burbank, Tyson R Fehringer, Luciano V Chiaramonte
Nonlethal sampling techniques have previously been evaluated for detection of a variety of viral salmonid pathogens. However, many of these studies have used molecular assays in lieu of widely accepted cell culture techniques to evaluate the sampled tissues. Samples were collected from female steelhead Oncorhynchus mykiss broodstock using three potential nonlethal sampling methods (mucus/skin scrape, pectoral fin clip, and gill tissue biopsy) and evaluated for the presence of infectious hematopoietic necrosis virus (IHNV) via cell culture techniques...
June 2017: Journal of Aquatic Animal Health
https://www.readbyqxmd.com/read/28323213/oral-delivery-of-bacillus-subtilis-spores-expressing-cysteine-protease-of-clonorchis-sinensis-to-grass-carp-ctenopharyngodon-idellus-induces-immune-responses-and-has-no-damage-on-liver-and-intestine-function
#2
Zeli Tang, Hengchang Sun, TingJin Chen, Zhipeng Lin, Hongye Jiang, Xinyi Zhou, Cunbin Shi, Houjun Pan, Ouqin Chang, Pengli Ren, Jinyun Yu, Xuerong Li, Jin Xu, Yan Huang, Xinbing Yu
Clonorchis sinensis (C. sinensis) is a fish-borne trematode. Human can be infected by ingestion of C. sinensis metacercariae parasitized in grass carp (Ctenopharyngodon idella). For induction of effective oral immune responses, spores of Bacillus subtilis (B. subtilis) WB600 were utilized as vehicle to delivery CsCP (cysteine protease of C. sinensis) cooperated with CotC (B.s-CotC-CP), one of coat proteins, to the gastrointestinal tract. After routine culture of 8-12 h in LB medium, B. subtilis containing CotC-CsCP was transferred into the sporulation culture medium...
March 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28315392/dietary-yeast-sterigmatomyces-halophilus-enhances-mucosal-immunity-of-gilthead-seabream-sparus-aurata-l
#3
Martha Reyes-Becerril, Crystal Guluarte, Diana Ceballos-Francisco, Carlos Angulo, M Ángeles Esteban
A yeast was isolated from hypersaline sediments, grown and phylogenetically characterized as Sterigmatomyces halophilus strainN16. The dietary administration of this yeast was studied for its effect on skin mucosal immune and antioxidant status of gilthead seabream (Sparus aurata L.). Fish were fed a commercial diet (control, non-supplemented diet), or the same commercial diet supplemented with 0.55% or 1.1% of yeast for 15 and 30 days. One month after the end of the trial, fish from all treatments were intraperitoneally injected with pathogenic Vibrio parahaemolyticus and further fed with the same diets for one week, after which fish were also sampled...
March 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28302574/the-arginine-vasotocin-and-serotonergic-systems-affect-interspecific-social-behaviour-of-client-fish-in-marine-cleaning-mutualism
#4
Zegni Triki, Redouan Bshary, Alexandra S Grutter, Albert F H Ros
Many species engage in mutualistic relationships with other species. The physiological mechanisms that affect the course of such social interactions are little understood. In the cleaning mutualism, cleaner fish Labroides dimidiatus do not always act cooperatively by eating ectoparasites, but sometimes cheat by taking bites of mucus from so-called "client" reef fish. The physiological mechanisms in these interspecific interactions, however, are little studied. Here, we focussed on three neuromodulator systems known to play important roles in intraspecific social behaviour of vertebrates to examine their role in clients' interspecific behaviour...
March 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28266549/parasitism-perturbs-the-mucosal-microbiome-of-atlantic-salmon
#5
M S Llewellyn, S Leadbeater, C Garcia, F-E Sylvain, M Custodio, K P Ang, F Powell, G R Carvalho, S Creer, J Elliot, N Derome
Interactions between parasite, host and host-associated microbiota are increasingly understood as important determinants of disease progression and morbidity. Salmon lice, including the parasitic copepod Lepeophtheirus salmonis and related species, are perhaps the most important problem facing Atlantic Salmon aquaculture after feed sustainability. Salmon lice parasitize the surface of the fish, feeding off mucus, scales and underlying tissue. Secondary bacterial infections are a major source of associated morbidity...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28261105/aestivation-induces-changes-in-the-mrna-expression-levels-and-protein-abundance-of-two-isoforms-of-urea-transporters-in-the-gills-of-the-african-lungfish-protopterus-annectens
#6
You R Chng, Jasmine L Y Ong, Biyun Ching, Xiu L Chen, Kum C Hiong, Wai P Wong, Shit F Chew, Siew H Lam, Yuen K Ip
The African lungfish, Protopterus annectens, is ammonotelic in water despite being ureogenic. When it aestivates in mucus cocoon on land, ammonia is detoxified to urea. During the maintenance phase of aestivation, urea accumulates in the body, which is subsequently excreted upon arousal. Urea excretion involves urea transporters (UT/Ut). This study aimed to clone and sequence the ut isoforms from the gills of P. annectens, and to test the hypothesis that the mRNA and/or protein expression levels of ut/Ut isoforms could vary in the gills of P...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28241058/the-presence-of-the-putative-gardnerella-vaginalis-sialidase-a-gene-in-vaginal-specimens-is-associated-with-bacterial-vaginosis-biofilm
#7
Liselotte Hardy, Vicky Jespers, Magelien Van den Bulck, Jozefien Buyze, Lambert Mwambarangwe, Viateur Musengamana, Mario Vaneechoutte, Tania Crucitti
Bacterial vaginosis (BV) is a difficult-to-treat recurrent condition in which health-associated lactobacilli are outnumbered by other anaerobic bacteria, such as Gardnerella vaginalis. Certain genotypes of G. vaginalis can produce sialidase, while others cannot. Sialidase is known to facilitate the destruction of the protective mucus layer on the vaginal epithelium by hydrolysis of sialic acid on the glycans of mucous membranes. This process possibly facilitates adhesion of bacterial cells on the epithelium since it has been linked with the development of biofilm in other pathogenic conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28221854/effects-of-fish-derived-biological-preservatives-on-cold-storage-of-grass-carp-ctenopharyngodon-idellus-fillets
#8
Tingting Li, Yang Jiang, Gaowei Jin, Qiancheng Zhao, Jianrong Li
Two kinds of fish-derived natural antimicrobial substances, protamine and catfish ( Clarias fuscus ) epidermal mucus extract (CEME), were evaluated for their effect on the quality of grass carp fillets. Fillets were atmosphere packaged in cast polypropylene bags and were stored at 4°C in a low-temperature incubator without light. Solutions (0.5%, wt/vol) of CEME and protamine were used for dip pretreatment, respectively. Bacteriological (aerobic plate count, Shewanella putrefaciens , Pseudomonas fluorescens ) and physicochemical (pH, total volatile basic nitrogen, K value, surface color, texture profiles, water distribution) parameters and volatile odor compounds were measured on days 0, 3, 6, 9, 12, and 15...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28212382/de-novo-assembly-of-the-sea-trout-salmo-trutta-m-trutta-skin-transcriptome-to-identify-putative-genes-involved-in-the-immune-response-and-epidermal-mucus-secretion
#9
Magdalena Malachowicz, Roman Wenne, Artur Burzynski
In fish, the skin is a multifunctional organ and the first barrier against pathogens. Salmonids differ in their susceptibility to microorganisms due to varied skin morphology and gene expression patterns. The brown trout is a salmonid species with important commercial and ecological value in Europe. However, there is a lack of knowledge regarding the genes involved in the immune response and mucus secretion in the skin of this fish. Thus, we characterized the skin transcriptome of anadromous brown trout using next-generation sequencing (NGS)...
2017: PloS One
https://www.readbyqxmd.com/read/28210224/skin-mucus-of-gilthead-sea-bream-sparus-aurata-l-protein-mapping-and-regulation-in-chronically-stressed-fish
#10
Jaume Pérez-Sánchez, Genciana Terova, Paula Simó-Mirabet, Simona Rimoldi, Ole Folkedal, Josep A Calduch-Giner, Rolf E Olsen, Ariadna Sitjà-Bobadilla
The skin mucus of gilthead sea bream was mapped by one-dimensional gel electrophoresis followed by liquid chromatography coupled to high resolution mass spectrometry using a quadrupole time-of-flight mass analyzer. More than 2,000 proteins were identified with a protein score filter of 30. The identified proteins were represented in 418 canonical pathways of the Ingenuity Pathway software. After filtering by canonical pathway overlapping, the retained proteins were clustered in three groups. The mitochondrial cluster contained 59 proteins related to oxidative phosphorylation and mitochondrial dysfunction...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28197867/ultramorphological-changes-in-gill-rakers-of-astyanax-altiparanae-characidae-kept-in-contaminated-environments
#11
F P Lopes, B F Pereira, R M S Alves, J R T Valim, F A T Figueiredo, D L Pitol, F H Caetano
Most water bodies in Brazil, and in the world, are contaminated by some types of pollutants, ranging from sewage to metal/chemicals, carcinogenic products, and biodegradable detergents. Despite the extensive knowledge on their effects on fish biology and especially on gill morphology, research that concerns their impacts on gill rakers and implications in parameters such as food consumption cannot be found in the literature. Gill rakers are vital because, together with gills, they are responsible for the defense and protection of the organism and for selecting appropriate food for survival...
February 14, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28188658/in-vivo-adherence-of-flavobacterium-psychrophilum-to-mucosal-external-surfaces-of-rainbow-trout-oncorhynchus-mykiss-fry
#12
A Papadopoulou, I Dalsgaard, A Lindén, T Wiklund
The adherence of Flavobacterium psychrophilum to surfaces of epithelial tissues has been inconclusively suggested as a mechanism, which enables the bacterium to invade the host. Hence, the present study aimed to examine the adherence of the cells of two colony phenotypes, smooth and rough, of F. psychrophilum to mucosal tissues of rainbow trout fry and to test the skin mucus as a nutrient for the growth of F. psychrophilum. Fish were immersed in water containing 10(6 ) CFU( ) mL(-1) F. psychrophilum for each colony phenotype...
February 11, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28167252/evolution-of-lymphocytes-immunoglobulin-t-of-the-teleost-sea-bass-dicentrarchus-labrax-quantitation-of-gene-expressing-and-immunoreactive-cells
#13
S Picchietti, N Nuñez-Ortiz, V Stocchi, E Randelli, F Buonocore, L Guerra, G Scapigliati
Immunoglobulin T (IgT) is one of the key effector molecules of jawed vertebrate's adaptive immune system, and in this work we describe the quantitative distribution of IgT-expressing and IgT-producing cells in tissues of the European seabass Dicentrarchus labrax by using mRNA riboprobes and a specific anti-IgT antibody. A polyclonal antiserum (pAb) was prepared by immunizing rabbits with three synthetic peptides deduced from the full length IgT cDNA sequence and located in a surface-exposed CH3 domain of IgT constant region...
February 3, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28046109/dietary-yeast-cell-wall-extract-alters-the-proteome-of-the-skin-mucous-barrier-in-atlantic-salmon-salmo-salar-increased-abundance-and-expression-of-a-calreticulin-like-protein
#14
Giulia Micallef, Phillip Cash, Jorge M O Fernandes, Binoy Rajan, John W Tinsley, Ralph Bickerdike, Samuel A M Martin, Alan S Bowman
In order to improve fish health and reduce use of chemotherapeutants in aquaculture production, the immunomodulatory effect of various nutritional ingredients has been explored. In salmon, there is evidence that functional feeds can reduce the abundance of sea lice. This study aimed to determine if there were consistent changes in the skin mucus proteome that could serve as a biomarker for dietary yeast cell wall extract. The effect of dietary yeast cell wall extract on the skin mucus proteome of Atlantic salmon was examined using two-dimensional gel electrophoresis...
2017: PloS One
https://www.readbyqxmd.com/read/28026022/protective-responses-of-intestinal-mucous-cells-in-a-range-of-fish-helminth-systems
#15
G Bosi, L Giari, J A DePasquale, A Carosi, M Lorenzoni, B Sayyaf Dezfuli
Histopathological, immunofluorescence and ultrastructural studies were conducted on the intestines of four fish species infected with different taxa of enteric helminths. Brown trout (Salmo trutta trutta), eel (Anguilla anguilla) and tench (Tinca tinca) obtained from Lake Piediluco (central Italy) were examined. Brown trout and eel were infected with two species of acanthocephalans, and tench was parasitized with a tapeworm species. In addition to the above site, specimens of chub (Squalius cephalus) and brown trout infected with an acanthocephalan were examined from the River Brenta (north Italy)...
December 27, 2016: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28009054/new-icing-media-for-quality-enhancement-of-chilled-hake-merluccius-merluccius-using-a-jumbo-squid-dosidicus-gigas-skin-extract
#16
Josafat Marina Ezquerra-Brauer, José M Miranda, Jesús Enrique Chan-Higuera, Jorge Barros-Velázquez, Santiago P Aubourg
BACKGROUD: An advanced strategy for chilled fish preservation, based on the inclusion in ice of an extract of jumbo squid (Dosidicus gigas) skin (JSS), is proposed. Aqueous solutions including acetic acid-ethanol extracts of JSS were tested at two different concentrations as icing media, being the effects on the quality evolution of chilled hake (Merluccius merluccius) monitored. RESULTS: A significant inhibition (p < 0.05) of microbial activity (aerobes, psychrotrophs, Enterobacteriaceae, proteolytic bacteria; pH, trimethylamine) was obtained in hake corresponding to the icing batch including the highest JSS concentration...
December 23, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27994904/bronchial-foreign-body-alerting-of-a-bronchial-tumor-the-need-of-a-follow-up-radiography
#17
Nahida El-Rifai, Samar Shahine, Hassan Sidani, Ali Sabeh Aion, Antoine Deschildre, Marie-Christine Copin
Lung tumors are extremely rare in the pediatric population, comprising only 0.2% of all malignancies in children. Among them, mucoepidermoid carcinoma (MEC) is even rarer with a reported frequency of 0.1% to 0.2%. MEC is defined by the World Health Organization as a tumor characterized by a combination of mucus-secreting, squamous, and intermediate cell types. We describe the case of a 4-year-old girl who presented with a history of intermittent fever and nonproductive cough of 1-month duration after foreign body aspiration...
2016: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/27992807/cellular-stress-and-histopathological-tools-used-as-biomarkers-in-oreochromis-mossambicus-for-assessing-metal-contamination
#18
Neeraj Kumar, K K Krishnani, S K Gupta, N P Singh
In the present study, we have analyzed various biochemical and histopathological biomarkers in the Oreochromis mossambicus collected from 18 sites at Bhima River. The biochemical biomarkers viz. antioxidative enzymes in muscle viz. catalase, SOD, and GST, glycolytic enzymes in kidney viz. LDH and MDH, protein metabolic enzymes in liver, gill, brain, gonad and muscle viz. ALT and AST, neurotransmitter enzymes in muscle AChE, lipid peroxidation and histopathology in the liver and gill have been evaluated. The oxidative biomarkers, glycolytic enzymes, protein metabolic enzymes and lipid peroxidation were significantly (p<0...
January 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/27966609/symbiont-derived-sphingolipids-modulate-mucosal-homeostasis-and-b-cells-in-teleost-fish
#19
Ali Sepahi, Héctor Cordero, Howard Goldfine, Maria Ángeles Esteban, Irene Salinas
Symbiotic bacteria and mucosal immunoglobulins have co-evolved for millions of years in vertebrate animals. Symbiotic bacteria products are known to modulate different aspects of the host immune system. We recently reported that Flectobacillus major is a predominant species that lives in the gill and skin mucosal surfaces of rainbow trout (Oncorhynchus mykiss). F. major is known to produce sphingolipids of a unique molecular structure. Here we propose a role for F. major and its sphingolipids in the regulation of B cell populations in rainbow trout, as well as an essential role for sphingolipids in trout mucosal homeostasis...
December 14, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27898676/dietary-butyrate-helps-to-restore-the-intestinal-status-of-a-marine-teleost-sparus-aurata-fed-extreme-diets-low-in-fish-meal-and-fish-oil
#20
Itziar Estensoro, Gabriel Ballester-Lozano, Laura Benedito-Palos, Fabian Grammes, Juan Antonio Martos-Sitcha, Liv-Torunn Mydland, Josep Alvar Calduch-Giner, Juan Fuentes, Vasileios Karalazos, Álvaro Ortiz, Margareth Øverland, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez
There is a constant need to find feed additives that improve health and nutrition of farmed fish and lessen the intestinal inflammation induced by plant-based ingredients. The objective of this study was to evaluate the effects of adding an organic acid salt to alleviate some of the detrimental effects of extreme plant-ingredient substitution of fish meal (FM) and fish oil (FO) in gilthead sea bream diet. Three experiments were conducted. In a first trial (T1), the best dose (0.4%) of sodium butyrate (BP-70 ®NOREL) was chosen after a short (9-weeks) feeding period...
2016: PloS One
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