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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
https://www.readbyqxmd.com/read/29017945/healing-and-mucosal-immunity-in-the-skin-of-experimentally-wounded-gilthead-seabream-sparus-aurata-l
#12
Diana Ceballos-Francisco, Héctor Cordero, Francisco A Guardiola, Alberto Cuesta, María Ángeles Esteban
Skin lesions are very common in fisheries, increasing the risk of pathogens entering through the wounded skin of the fish. In the present assay, the progression of wound healing was studied over a 7 day period in gilthead seabream (Sparus aurata L.) after making experimental wounds in two different locations: above (group A) or below (group B) the lateral line. Macroscopic observation confirmed faster wound healing of the wounds of fish from group B. Furthermore, several immune-related components were studied in the skin mucus of wounded fish to ascertain whether wounding altered the mucus composition compared with the values obtained from non-wounded fish (group C, control)...
October 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29017944/immunological-responses-and-disease-resistance-of-rainbow-trout-oncorhynchus-mykiss-juveniles-following-dietary-administration-of-stinging-nettle-urtica-dioica
#13
Mohammad Reza Saeidi Asl, Milad Adel, Christopher Marlowe A Caipang, Mahmoud A O Dawood
The present study investigated the effects of dietary supplementation of stinging nettle (Urtica dioica) on growth performance, skin mucus, immune response and disease resistance of rainbow trout (Oncorhynchus mykiss) fed with diets supplemented with U. dioica at 0, 1, 2 and 3%. After 8 weeks of feeding, the addition of U. dioica at 3% level resulted in improved weight gain, specific growth rate and feed conversion ratio significantly when compared to the other groups (P < 0.05). Hematological responses including: hematocrit (Htc), hemoglobin (Hb), lymphocyte and neutrophil populations enhanced significantly in fish fed 3% of stinging nettle when measured after 4 weeks; while, total red blood cells, white blood, Htc, Hb, lymphocyte and neutrophil populations significantly increased after 8 weeks in the same group (P < 0...
October 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28956008/skin-mucus-proteins-of-lumpsucker-cyclopterus-lumpus
#14
Deepti Manjari Patel, Monica F Brinchmann
Fish skin mucus serves as a first line of defense against pathogens and external stressors. In this study the proteomic profile of lumpsucker skin mucus was characterized using 2D gels coupled with tandem mass spectrometry. Mucosal proteins were identified by homology searches across the databases SwissProt, NCBInr and vertebrate EST. The identified proteins were clustered into ten groups based on their gene ontology biological process in PANTHER (www.patherdb.org). Calmodulin, cystatin-B, histone H2B, peroxiredoxin1, apolipoprotein A1, natterin-2, 14-3-3 protein, alfa enolase, pentraxin, warm temperature acclimation 65 kDa (WAP65kDa) and heat shock proteins were identified...
March 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/28928412/bacterial-communities-16s-rdna-fingerprinting-as-a-potential-tracing-tool-for-cultured-seabass-dicentrarchus-labrax
#15
Tânia Pimentel, Joana Marcelino, Fernando Ricardo, Amadeu M V M Soares, Ricardo Calado
Traceability of seafood has become crucial with market globalization and consumer's awareness. The present study used PCR-DGGE and 454 pyrosequencing to assess if bacterial communities fingerprint associated to seabass (Dicentrarchus labrax) skin mucus can be used to discriminate the geographic origin of fishes cultured in three semi-intensive fish farms. PCR-DGGE and pyrosequencing results were congruent and suggested that this molecular approach has the potential to trace fish farms with a spatial resolution <500 m...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28917489/the-effects-of-single-or-combined-administration-of-galactooligosaccharide-and-pediococcus-acidilactici-on-cutaneous-mucus-immune-parameters-humoral-immune-responses-and-immune-related-genes-expression-in-common-carp-cyprinus-carpio-fingerlings
#16
Maryam Modanloo, Siyavash Soltanian, Mostafa Akhlaghi, Seyed Hossein Hoseinifar
The present study was performed to investigate the effects of single or combined administration of galactooligosaccharide (GOS) and Pediococcus acidilactici on cutaneous mucus immune parameters, humoral immune responses and immune related genes expression in common carp (Cyprinus carpio) fingerlings. Carps were fed experimental diets for 8 weeks as follows: non-supplemented (Control), prebiotic diet (10 g/kg GOS), probiotic diet (1 g/kg [0.9 × 10(7) CFU] lyophilized P. acidilactici) and synbiotic diet (10 GOS in combination with 1 g/kg [0...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28903867/detection-accuracy-of-renibacterium-salmoninarum-in-chinook-salmon-oncorhynchus-tshawytscha-walbaum-from-non-lethally-collected-samples-effects-of-exposure-route-and-disease-severity
#17
Carolyn A Richards, Cheryl A Murphy, Travis O Brenden, Thomas P Loch, Mohamed Faisal
Bacterial kidney disease (BKD), caused by Renibacterium salmoninarum, threatens salmonid populations throughout the Northern hemisphere. Many fishery regulatory authorities require ongoing disease monitoring in hatcheries and spawning runs prior to gamete collection to prevent BKD outbreaks and spread. According to diagnostic protocols of the American Fisheries Society-Fish Health Section, monitoring for R. salmoninarum generally consists of lethal sampling of visceral organs from fish. However, non-lethal sampling would be preferable, especially for valuable broodstock or endangered species...
September 15, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28899776/the-effect-of-temperature-on-the-mucosal-igm-antibody-response-to-dnp-klh-in-channel-catfish-ictalurus-punctatus
#18
Miles D Lange, Carl D Webster
Bath immersion remains a practical route for immunizing against disease in channel catfish; however research efforts in this area have revealed variable results when activating mucosal Ab responses with different antigens. This is likely due to a number of factors including the individual species, age of the fish, preparation of the immunogens, and differences in the overall dosage and the duration of exposure to vaccines. The current study sought to evaluate the effect of water temperature on the in vivo mucosal adaptive immune response in channel catfish to a protein-hapten antigen, DNP-KLH...
September 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28882795/effects-of-cordyceps-militaris-spent-mushroom-substrate-and-lactobacillus-plantarum-on-mucosal-serum-immunology-and-growth-performance-of-nile-tilapia-oreochromis-niloticus
#19
Hien Van Doan, Seyed Hossein Hoseinifar, Mahmoud A O Dawood, Chanagun Chitmanat, Khambou Tayyamath
An 8-weeks feeding trial was performed to investigate the possible effects of supplementation of Nile tilapia diet with Cordyceps militaris spent mushroom substrate (SMS) single or combined with Lactobacillus plantarum on immune parameters and growth performance. For this aim, Nile tilapia fingerlings were fed with four experimental diets namely: Diet 1 (0 - control), Diet 2 (10 g kg(-1) SMS), Diet 3 (10(8) CFU g(-1)L. plantarum), and Diet 4 (10 g kg(-1) SMS + 10(8) CFU g(-1)L. plantarum). At the end of feeding trial, skin mucus parameters, serum immune parameters, and growth performance were measured...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28846140/an-examination-of-surface-epithelium-structures-of-the-embryo-across-the-genus-poeciliopsis-poeciliidae
#20
Tami M Panhuis, Megan Fris, Laura Tuhela, Lucia Kwan
In viviparous, teleost fish, with postfertilization maternal nutrient provisioning, embryonic structures that facilitate maternal-fetal nutrient transfer are predicted to be present. For the family Poeciliidae, only a handful of morphological studies have explored these embryonic specializations. Here, we present a comparative morphological study in the viviparous poeciliid genus, Poeciliopsis. Using microscopy techniques, we examine the embryonic surface epidermis of Poeciliopsis species that vary in their level of postfertilization maternal nutrient provisioning and placentation across two phylogenetic clades and three independent evolutionary origins of placentation...
August 28, 2017: Journal of Morphology
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