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https://www.readbyqxmd.com/read/29305993/dietary-supplementation-of-probiotic-bacillus-licheniformis-dahb1-improves-growth-performance-mucus-and-serum-immune-parameters-antioxidant-enzyme-activity-as-well-as-resistance-against-aeromonas-hydrophila-in-tilapia-oreochromis-mossambicus
#1
Narayanan Gobi, Baskaralingam Vaseeharan, Jiann-Chu Chen, Ravichandran Rekha, Sekar Vijayakumar, Mahalingam Anjugam, Arokiadhas Iswarya
The present study evaluated the dietary supplementation of probiotic Bacillus licheniformis Dahb1 on the growth performance, immune parameters and antioxidant enzyme activities in serum and mucus as well as resistance against Aeromonas hydrophila in Mozambique tilapia Oreochromis mossambicus. Fish (24 ± 2.5 g) were fed separately with three diets, 1) commercial diet (control), 2) diet containing probiotic at 105 cfu g-1 (D1), and 3) diet containing probiotic at 107 cfu g-1 (D2) for 4 weeks. Growth performance in term of final weight (FW), specific growth rate (SGR) and feed conversion ratio (FCR), immune parameters of total protein (TP), alkaline phosphatase (ALP), myeloperoxidase (MPO), lysozyme (LYZ), reactive oxygen species (ROS), reactive nitrogen species (RNS) and antioxidant parameters of superoxide dismutase (SOD) and glutathione peroxidase (GPx) in serum and mucus were evaluated after 2nd and 4th weeks...
January 3, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29295755/regional-morphology-and-mucus-composition-in-the-urogenital-papilla-skin-of-the-blackbelly-rosefish-helicolenus-dactylopterus-delaroche-1809
#2
Gianluca Accogli, Letizia Sion, Porzia Maiorano, Francesca Capezzuto, Gianfranco D'Onghia, Salvatore Desantis
Blackbelly rosefish Helicolenus dactylopterus is a zygoparous fish whose males are equipped with the copulating organ named urogenital papilla (UP). This study deals with the morphology and the glycoconjugate pattern of the UP epidermis, which is the male tissue interacting with the female internal body during copulation. The carbohydrate content was studied by means of conventional and lectin histochemistry. The epidermis was shown to be a stratified cuboidal epithelium and to exhibit characteristic intraepithelial pits in the apical zone...
December 26, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29285742/characterisation-of-lactic-acid-bacteria-isolated-from-the-gut-of-cyprinus-carpio-that-may-be-effective-against-lead-toxicity
#3
Sib Sankar Giri, Jin Woo Jun, Saekil Yun, Hyoun Joong Kim, Sang Guen Kim, Jeong Woo Kang, Sang Wha Kim, Se Jin Han, Se Chang Park, V Sukumaran
The present study was conducted to isolate and characterise Pb-resistant lactic acid bacteria (LAB), and thus determine their potential for use as probiotics against Pb toxicity. A total of 107 Pb-resistant LAB strains were isolated from the gut content of Cyprinus carpio, of which 41 were established to be gram-positive and catalase-negative. Investigation of the Pb-binding ability of these isolated LAB identified seven strains (P2, P6, P7, P9, P16, P19 and P22) with comparatively high Pb-binding activities...
December 28, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29282153/under-control-how-a-dietary-additive-can-restore-the-gut-microbiome-and-proteomic-profile-and-improve-disease-resilience-in-a-marine-teleostean-fish-fed-vegetable-diets
#4
María Carla Piazzon, Josep Alvar Calduch-Giner, Belén Fouz, Itziar Estensoro, Paula Simó-Mirabet, Mónica Puyalto, Vasileios Karalazos, Oswaldo Palenzuela, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez
BACKGROUND: The constant increase of aquaculture production and wealthy seafood consumption has forced the industry to explore alternative and more sustainable raw aquafeed materials, and plant ingredients have been used to replace marine feedstuffs in many farmed fish. The objective of the present study was to assess whether plant-based diets can induce changes in the intestinal mucus proteome, gut autochthonous microbiota and disease susceptibility of fish, and whether these changes could be reversed by the addition of sodium butyrate to the diets...
December 28, 2017: Microbiome
https://www.readbyqxmd.com/read/29277971/intake-of-fish-oil-specifically-modulates-colonic-muc2-expression-in-middle-aged-rats-by-suppressing-the-glycosylation-process
#5
Yafang Ma, Guanghong Zhou, Yingqiu Li, Yingying Zhu, Xiaobo Yu, Fan Zhao, He Li, Xinglian Xu, Chunbao Li
SCOPE: Dietary fats have been shown to affect gut microbiota composition and aging gene expression of middle-aged rats at a normal dose, but little is known about such an effect on gut barrier. In this study, the changes in colonic Muc2 expression were investigated and the underlying mechanism was also proposed. METHODS AND RESULTS: Thirty-six middle-aged Sprague-Dawley rats were assigned to one of diets containing soybean oil, lard or fish oil (4%). The rats were fed for 5 weeks and then goblet cells, Muc2 expression and inflammatory cytokines in the colon were measured...
December 26, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29247694/the-selective-cleaning-behaviour-of-juvenile-blue-headed-wrasse-thalassoma-bifasciatum-in-the-caribbean
#6
Katie Dunkley, Jo Cable, Sarah E Perkins
Through the removal of parasites, dead skin and mucus from the bodies of visiting reef fish (clients), cleaner fish have a significant ecosystem function in the ecology of coral reefs. Cleaners gain nutrition from these interactions and through offering a 'service' are afforded protection from predators. Given these benefits, it is unclear why more fish do not engage in cleaning, and why part-time cleaning strategies exist. On coral reefs, dedicated species clean throughout their life, whereas some species are facultative, employing opportunistic and/or temporary cleaning strategies...
December 13, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/29242133/role-of-aloin-in-the-modulation-of-certain-immune-parameters-in-skin-mucus-of-an-indian-major-carp-labeo-rohita
#7
Ayan Srivastava, Ashwini Kumar Nigam, Swati Mittal, Ajay Kumar Mittal
Enhancement of immune system seems to be the most promising method of preventing fish diseases. Several herbal products have immunostimulant properties, and are environmental friendly, economical and can act against a broad spectrum of pathogens. Present study was designed with an aim to evaluate the role of aloin, extracted from a herb Aloe barbadensis, in the modulation of certain immune parameters in an Indian major carp, Labeo rohita. Fishes were divided into control, vehicle control and aloin treated groups...
December 11, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29197330/chronic-wounds-alter-the-proteome-profile-in-skin-mucus-of-farmed-gilthead-seabream
#8
Héctor Cordero, Monica F Brinchmann, Alberto Cuesta, María A Esteban
BACKGROUND: Skin and its mucus are known to be the first barrier of defence against any external stressors. In fish, skin wounds frequently appear as a result of intensive culture and also some diseases have skin ulcers as external clinical signs. However, there is no information about the changes produced by the wounds in the mucosae. In the present paper, we have studied the alterations in the proteome map of skin mucus of gilthead seabream during healing of experimentally produced chronic wounds by 2-DE followed by LC-MS/MS...
December 2, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29176788/preservation-of-three-dimensional-spatial-structure-in-the-gut-microbiome
#9
Yuko Hasegawa, Jessica L Mark Welch, Blair J Rossetti, Gary G Borisy
Preservation of three-dimensional structure in the gut is necessary in order to analyze the spatial organization of the gut microbiota and gut luminal contents. In this study, we evaluated preparation methods for mouse gut with the goal of preserving micron-scale spatial structure while performing fluorescence imaging assays. Our evaluation of embedding methods showed that commonly used media such as Tissue-Tek Optimal Cutting Temperature (OCT) compound, paraffin, and polyester waxes resulted in redistribution of luminal contents...
2017: PloS One
https://www.readbyqxmd.com/read/29155272/oral-immunization-with-recombinant-lactobacillus-casei-expressing-ompai-confers-protection-against-aeromonas-veronii-challenge-in-common-carp-cyprinus-carpio
#10
Dong-Xing Zhang, Yuan-Huan Kang, Long Chen, Shahrood Ahmed Siddiqui, Chun-Feng Wang, Ai-Dong Qian, Xiao-Feng Shan
Aeromonas veronii is a gram-negative pathogen capable of infecting both fish and mammals, including humans, and natural infection in fish results in irreparable damage to the aquaculture industry. Lactic acid bacteria (LAB) have a number of properties that make them attractive candidates as delivery vehicles for presentation to the mucosa sites of compounds with pharmaceutical interest, in particular vaccines. In this study, we generated two recombinant Lactobacillus casei (surface-displayed or secretory) expressing the OmpAI of A...
November 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146501/antibacterial-activity-and-probiotic-characterization-of-autochthonous-paenibacillus-polymyxa-isolated-from-anabas-testudineus-bloch-1792
#11
Sebastian J Midhun, Sahadevan Neethu, A Vysakh, Damodaran Arun, E K Radhakrishnan, Mathew Jyothis
Microbial fish pathogens are prevalent in aquaculture. Control of Bacterial fish pathogens is important and bio control of pathogenic bacteria is a novel field of study. The aim of this study was to evaluate the antagonistic activity of bacteria isolated from Anabas testudineus against potent fish pathogens. The cellular components/preparations and filtered cell free culture supernatants were effective against six fish pathogens. Altogether 110 strains were isolated from fish proximal and distal intestine, out of which 10 strains were selected through well diffusion method...
November 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29134526/mucociliary-transport-differential-white-blood-cells-and-cyto-genotoxicity-in-peripheral-erythrocytes-in-fish-from-a-polluted-urban-pond
#12
Edison Bezerra da Silva, Sandra Aparecida da Silva Corrêa, Denis Moledo de Souza Abessa, Bruno Ferreira Xavier da Silva, Dolores Helena Rodriguez Ferreira Rivero, Robson Seriani
The present study evaluated the water quality of a polluted pond through the analysis of in vitro mucociliary transport, hematological parameters, and biomarkers of cyto-genotoxicity in the Nile tilapia (Oreochromis niloticus). Blood and mucus samples were collected from ten specimens from the polluted pond and from ten specimens from a control area. The fish were anesthetized with 3% benzocaine, mucus was collected directly from the gills, and blood was drawn from the caudal artery. Blood smears were stained using the May-Grünwald Giemsa process for the differential leukocyte counts and to determine the frequency of leukocytes, thrombocytes, erythroblasts, micronuclei, and nuclear abnormalities...
November 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29104567/the-skin-mucus-microbial-community-of-farmed-atlantic-salmon-salmo-salar
#13
Giusi Minniti, Live Heldal Hagen, Davide Porcellato, Sven Martin Jørgensen, Phillip B Pope, Gustav Vaaje-Kolstad
The skin of the teleost is a flexible and scaled structure that protects the fish toward the external environment. The outermost surface of the skin is coated with mucus, which is believed to be colonized by a diverse bacterial community (commensal and/or opportunistic). Little is known about such communities and their role in fish welfare. In aquaculture, fish seem to be more susceptible to pathogens compared to wild fish. Indeed common fish farming practices may play important roles in promoting their vulnerability, possibly by causing changes to their microbiomes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29104260/antimicrobial-and-anti-proliferative-effects-of-skin-mucus-derived-from-dasyatis-pastinaca-linnaeus-1758
#14
Virginia Fuochi, Giovanni Li Volti, Giuseppina Camiolo, Francesco Tiralongo, Cesarina Giallongo, Alfio Distefano, Giulio Petronio Petronio, Ignazio Barbagallo, Maria Viola, Pio Maria Furneri, Michelino Di Rosa, Roberto Avola, Daniele Tibullo
Resistance to chemotherapy occurs in various diseases (i.e., cancer and infection), and for this reason, both are very difficult to treat. Therefore, novel antimicrobial and chemotherapic drugs are needed for effective antibiotic therapy. The aim of the present study was to assess the antimicrobial and anti-proliferative effects of skin mucus derived from Dasyatis pastinaca (Linnaeus, 1758). Our results showed that skin mucus exhibited a significant and specific antibacterial activity against Gram-negative bacteria but not against Gram-positive bacteria...
November 1, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29102685/antibacterial-activity-of-autochthonous-bacteria-isolated-from-anabas-testudineus-bloch-1792-and-it-s-in-vitro-probiotic-characterization
#15
Sebastian J Midhun, Sahadevan Neethu, A Vysakh, M A Sunil, E K Radhakrishnan, Mathew Jyothis
Antimicrobial potentials of bacteria isolated from Anabas testudineus have been evaluated through in vitro antagonistic activity against potent fish pathogens. The cellular components and filtered culture medium were effective against six fish pathogens. Altogether 110 strains were isolated from the fish gut, out of which 10 strains were selected through well diffusion method. From them, a strain HGA8B having cumulative maximum score was selected as candidate probiotic. The whole-cell product, heat-killed whole-cell product, Ethyl acetate extract, and the filtered broth were exhibited bactericidal activity against the tested pathogens...
November 7, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29098580/high-concentrations-of-perfluorooctane-sulfonate-in-mucus-of-tiger-puffer-fish-takifugu-rubripes-a-laboratory-exposure-study
#16
Masato Honda, Akemi Muta, Akinari Shimazaki, Taiki Akasaka, Michiyasu Yoshikuni, Yohei Shimasaki, Yuji Oshima
Distribution of perfluorooctane sulfonate (PFOS) was investigated in tissues (plasma, blood clot, mucus, skin, liver, muscle, and gonad) of tiger puffer fish Takifugu rubripes. A single dose of PFOS was intraperitoneally injected at 0.1 mg/kg body weight with samples taken over a 14-day period. The highest concentration of PFOS was found in the plasma, 861 ng/mL at 14 days, followed by the mucus, liver, blood clot, gonads, muscles, and skin of fish. A gradual upward trend in PFOS concentration was observed in the mucus and liver whereas there was no change in the plasma, blood clot, gonad, muscle, and skin after the initial increase in PFOS concentrations following injection...
November 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29073147/molecular-characterization-of-three-rhesus-glycoproteins-from-the-gills-of-the-african-lungfish-protopterus-annectens-and-effects-of-aestivation-on-their-mrna-expression-levels-and-protein-abundance
#17
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
African lungfishes are ammonotelic in water. They can aestivate for long periods on land during drought. During aestivation, the gills are covered with dried mucus and ammonia excretion ceases. In fishes, ammonia excretion through the gills involves Rhesus glycoproteins (RhGP/Rhgp). This study aimed to obtain the complete cDNA coding sequences of rhgp from the gills of Protopterus annectens, and to determine their branchial mRNA and protein expression levels during the induction, maintenance and arousal phases of aestivation...
2017: PloS One
https://www.readbyqxmd.com/read/29054826/viral-infections-in-common-carp-lead-to-a-disturbance-of-mucin-expression-in-mucosal-tissues
#18
Mikolaj Adamek, Dennis Hazerli, Marek Matras, Felix Teitge, Michal Reichert, Dieter Steinhagen
In response to the constant challenge by potential pathogens, external surfaces of fish, their skin, gills and intestinal tract, are coated with mucus, a gel like substance which largely prevents the entry of pathogens. This mucus gel consists mainly of water and mucins, large O-glycosylated proteins, which are responsible for forming a gel like mixture. A modulation of the mRNA expression of mucins, was described in viral diseases in mammals however there is a knowledge gap about the regulation of mucins during viral infection in fish...
October 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29038557/anti-infective-effect-of-adhesive-probiotic-lactobacillus-in-fish-is-correlated-with-their-spatial-distribution-in-the-intestinal-tissue
#19
Suxu He, Chao Ran, Chubin Qin, Shuning Li, Hongling Zhang, Willem M de Vos, Einar Ringø, Zhigang Zhou
In this study, we tested the distribution of 49 Lactobacillus strains in the mucus and mucosa of the intestine tissue of zebrafish. We observed a progressive change in the spatial distribution of Lactobacillus strains, and suggested a division of the strains into three classes: mucus type (>70% in mucus), mucosa type (>70% in mucosa) and hybrid type (others). The hybrid type strains were more efficient in protection of zebrafish against Aeromonas hydrophila infection. Three strains representing different distribution types (JCM1149, CGMCC1...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29023973/ihigh-resolution-mass-spectrometry-of-skin-mucus-for-monitoring-physiological-impacts-and-contaminant-biotransformation-products-in-fathead-minnows-exposed-to-wastewater-effluent
#20
Jonathan D Mosley, Drew R Ekman, Jenna E Cavallin, Daniel L Villeneuve, Gerald T Ankley, Timothy W Collette
High-resolution mass spectrometry is advantageous for monitoring physiological impacts and contaminant biotransformation products in fish exposed to complex wastewater effluent. We evaluated this technique using skin mucus from male and female fathead minnows (Pimephales promelas) exposed to control water or treated wastewater effluent at 5%, 20%, and 100% levels for 21 d, using an onsite, flow-through system providing real-time exposure. Both sex-specific and non-sex-specific responses were observed in the mucus metabolome, the latter suggesting the induction of general compensatory pathways for xenobiotic exposures...
October 11, 2017: Environmental Toxicology and Chemistry
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