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https://www.readbyqxmd.com/read/29770134/comparative-immune-and-stress-related-transcript-response-induced-by-air-exposure-and-vibrio-anguillarum-bacterin-in-rainbow-trout-oncorhynchus-mykiss-and-gilthead-seabream-sparus-aurata-mucosal-surfaces
#1
Ali Reza Khansari, Joan Carles Balasch, Eva Vallejos-Vidal, David Parra, Felipe E Reyes-López, Lluís Tort
Fish have to face various environmental challenges that may compromise the efficacy of the immune response in mucosal surfaces. Since the effect of acute stress on mucosal barriers in fish has still not been fully elucidated, we aimed to compare the short-term mucosal stress and immune transcriptomic responses in a freshwater (rainbow trout, Oncorhynchus mykiss ) and a marine fish (gilthead seabream, Sparus aurata ) to bacterial immersion ( Vibrio anguillarum bacterin vaccine) and air exposure stress in skin, gills, and intestine...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29755007/structure-of-the-alimentary-tract-in-the-atlantic-mudskipper-periophthalmus-barbarus-gobiidae-oxudercinae-anatomical-histological-and-ultrastructural-studies
#2
Katarzyna Wołczuk, Maciej Ostrowski, Agnieszka Ostrowska, Teresa Napiórkowska
The alimentary tract of oxudercine gobies is characterized by a lack of an anatomically distinct stomach, owing to which they are classified as stomachless. Since the environment, food requirements, and feeding habits have a significant impact on the anatomy of the alimentary tract of fish, it was assumed that predominantly carnivorous, semi-terrestrial mudskippers would have a stomach. In order to verify this hypothesis, anatomical, histological, histochemical and ultrastructural analysis of the alimentary tract of the Atlantic mudskipper Periophthalmus barbarus was performed...
April 26, 2018: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29751843/characterisation-of-proteins-in-excretory-secretory-products-collected-from-salmon-lice-lepeophtheirus-salmonis
#3
Scott Hamilton, Kevin McLean, Sean J Monaghan, Carol McNair, Neil F Inglis, Hazel McDonald, Sandra Adams, Randolph Richards, William Roy, Patrick Smith, James Bron, Alasdair J Nisbet, David Knox
BACKGROUND: The salmon louse, Lepeophtheirus salmonis, is an ectoparasitic copepod which feeds on the mucus, skin and blood of salmonid fish species. The parasite can persist on the surface of the fish without any effective control being exerted by the host immune system. Other ectoparasitic invertebrates produce compounds in their saliva, excretions and/or secretions which modulate the host immune responses allowing them to remain on or in the host during development. Similarly, compounds are produced in secretions of L...
May 11, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29751397/microplastic-accumulation-patterns-and-transfer-of-benzo-a-pyrene-to-adult-zebrafish-danio-rerio-gills-and-zebrafish-embryos
#4
Annika Batel, Flora Borchert, Hannes Reinwald, Lothar Erdinger, Thomas Braunbeck
Since only a few studies have investigated effects of microplastics (MPs) by routes other than ingestion, this study was designed to analyze the accumulation patterns and transfer of toxic substances associated with microplastic exposure by simple attachment to (1) adult zebrafish (Danio rerio) gills and (2) zebrafish embryos. Two sizes of fluorescently labelled polymers (1-5 and 10-20 μm) loaded with the model polycyclic aromatic hydrocarbon (PAH) benzo[a]pyrene (BaP) were used to analyze fate, accumulation and transfer of microplastic-associated persistent organic pollutants (POPs) on gills and embryos...
April 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29750330/antagonism-against-fish-pathogens-by-cellular-components-preparations-of-bacillus-coagulans-mtcc-9872-and-it-s-in-vitro-probiotic-characterisation
#5
Sebastian J Midhun, Sahadevan Neethu, A Vysakh, E K Radhakrishnan, Mathew Jyothis
Bacterial fish pathogens are pervasive in aquaculture. Control of bacterial fish pathogen is a difficult task among aquaculture practitioners. A large number of antibiotics are used for the control of prevalent bacterial pathogens in aquaculture. This may lead to drug resistance among pathogens and further treatment will be ineffective. Here, we can use probiotic bacteria as a biocontrol agent in fish disease and it is a novel field. In this study, antimicrobial potential of the bacterium Bacillus coagulans (MTCC-9872) has been evaluated through in vitro antagonistic activity of cellular preparations/components against potent pathogens...
May 10, 2018: Current Microbiology
https://www.readbyqxmd.com/read/29710581/interaction-of-carboxylated-cdse-zns-quantum-dots-with-fish-embryos-towards-understanding-of-nanoparticles-toxicity
#6
Ričardas Rotomskis, Živilė Jurgelėnė, Mantas Stankevičius, Milda Stankevičiūtė, Nijolė Kazlauskienė, Kęstutis Jokšas, Danguolė Montvydienė, Vytautas Kulvietis, Vitalijus Karabanovas
Due to colloidal instability even with protective coatings, nanoparticles tend to aggregate in complex environments and possibly interact with biota. In this study, visualization of quantum dots (QDs) interaction with rainbow trout (Oncorhynchus mykiss) embryos was performed. Studies on zebrafish (Danio rerio) and pearl gourami (Trichogaster leerii) embryos have shown that QDs interact with embryos in a general manner and their affects are independent on the type of the embryo. It was demonstrated that carboxylated CdSe/ZnS QDs (4 nM) were aggregating in accumulation media and formed agglomerates on the surface of fish embryos under 1-12 days incubation in deep-well water...
April 23, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29704553/changes-in-natural-haemolytic-complement-activity-induced-by-stress-in-gilthead-seabream-sparus-aurata-l
#7
Francisco A Guardiola, Miguel Saraiva-Fraga, Alberto Cuesta, M Angeles Esteban
In aquaculture, animals can be continually exposed to environmental stress factors that put their health and even survival at risk. Two experiments were performed to evaluate the impact of different stress conditions (acute crowding and anaesthetic) on the natural haemolytic complement activity in serum and skin mucus of gilthead seabream (Sparus aurata L.). In the first experiment, fish were subjected to 10 kg m-3 (low density, control group) and 50 kg m-3 (high density, crowding group) during 2, 24 and 48 h...
April 25, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29678203/quantitative-shotgun-proteomics-distinguishes-wound-healing-biomarker-signatures-in-common-carp-skin-mucus-in-response-to-ichthyophthirius-multifiliis
#8
Mona Saleh, Gokhlesh Kumar, Abdel-Azeem Abdel-Baki, Mohamed A Dkhil, Mansour El-Matbouli, Saleh Al-Quraishy
Ichthyophthirius multifiliis is a ciliated protozoan parasite recognized as one of the most pathogenic diseases of wild and cultured freshwater fish. Fish skin mucus plays a significant role against invading pathogens. However, the protein-based modulation against infection with I. multifiliis, of host fish at this barrier is unknown. Thus, we investigated the skin mucus proteome of common carp using a shotgun proteomic approach at days 1 and 9 after I. multifiliis exposure. We identified 25 differentially expressed proteins in infected carp skin mucus...
April 20, 2018: Veterinary Research
https://www.readbyqxmd.com/read/29621566/william-hunter-and-lymphatics
#9
Stuart W McDonald, David Russell
William Hunter along with his brother, John, and their colleagues William Hewson, William Cruikshank and John Sheldon made a large contribution to understanding of lymphatic vessels. Hewson, Cruikshank and Sheldon all carried out mercury injections and made much progress in mapping the distribution of lymphatics in the human body. William Hunter appreciated that lymphatics absorbed fluid from the tissues of the body and that lacteals of the intestine and lymphatics are similar structures. John Hunter carried out an elegant series of experiments that proved that lacteals absorb products of digestion...
April 2, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29516859/stress-effects-of-amyloodiniosis-in-gilthead-sea-bream-sparus-aurata
#10
Márcio Moreira, Marcelino Herrera, Pedro Pousão-Ferreira, Jose Ignacio Navas Triano, Florbela Soares
Amyloodiniosis is a parasitological disease caused by one of the most common and important parasitic dinoflagellates in fish, Amyloodinium ocellatum (Brown), that represents a major bottleneck for gilthead seabream semi-intensive aquaculture in Southern Europe. In this experiment, we analyzed some metabolic, osmoregulatory and stress indicators to elucidate some of the physiological responses of gilthead sea bream when exposed to an A. ocellatum outbreak. We observed significant differences between Control and Infection groups in the cortisol, lactate and gill Na+/K+-ATPase (NKA) activity levels but that glucose, osmolarity, pH and total protein did not present such differences...
March 5, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29514108/low-level-clonal-fgfr2-amplification-defines-a-unique-molecular-subtype-of-intrahepatic-cholangiocarcinoma-in-a-chinese-population
#11
Xiao-Hong Pu, Qing Ye, Jun Yang, Hong-Yan Wu, Xi-Wei Ding, Jiong Shi, Liang Mao, Xiang-Shan Fan, Jun Chen, Yu-Dong Qiu, Qin Huang
Intrahepatic cholangiocarcinoma (ICC) is a subtype of primary liver cancer rarely curable by surgery that is increasing rapidly in incidence. Chromosomal translocations and amplifications of the fibroblast growth factor receptor 2 (FGFR2) locus are present in several kinds of tumors including ICC, but their incidence has not been assessed in Chinese patients. Using break-apart probes and by determining the ratios of FGFR2/chromosome enumeration probe (CEP) 10 double-color probes, we evaluated 122 ICCs for the presence of FGFR2 translocations and amplifications, respectively, by fluorescence in situ hybridization (FISH)...
March 4, 2018: Human Pathology
https://www.readbyqxmd.com/read/29464758/a-genomic-and-clinicopathological-study-of-non-small-cell-lung-cancers-with-discordant-ros1-gene-status-by-fluorescence-in-situ-hybridisation-and-immunohistochemical-analysis
#12
Jing Zhao, Xiaotong Chen, Jing Zheng, Mei Kong, Bo Wang, Wei Ding
AIMS: ROS1 immunohistochemistry (IHC) using D4D6 antibody is a useful tool for screening patients with non-small-cell lung cancer (NSCLC) who may be suitable for targeted therapy. Many studies and our data have identified cases that express the ROS1 protein strongly but are negative for ROS1 by fluorescence in-situ hybridisation (FISH). The present study investigated the driver mutation and clinicopathological characteristics of 26 discordant cases (ROS1 IHC-positive but FISH-negative) to find new clues for distinguishing real ROS1-rearranged cases...
February 21, 2018: Histopathology
https://www.readbyqxmd.com/read/29462748/dietary-administration-effects-of-fenugreek-seeds-on-skin-mucosal-antioxidant-and-immunity-status-of-gilthead-seabream-sparus-aurata-l
#13
F A Guardiola, A Bahi, A M Jiménez-Monreal, M Martínez-Tomé, M A Murcia, M A Esteban
Improving fish defense through the preventive administration of immunostimulants has an important role in controlling the outbreak of the disease in aquaculture. As a continuity of our previous studies, this paper describes the effects of dietary fenugreek (Trigonella foenum graecum) seeds on the skin mucosal antioxidant status and immune response of gilthead seabream (Sparus aurata L.). Fish were fed with four experimental diets: one a basal diet (control) and three diets with powdered fenugreek seeds incorporated in the fish feed at 1%, 5%, and 10%...
April 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29427721/the-effects-singular-or-combined-administration-of-fermentable-fiber-and-probiotic-on-mucosal-immune-parameters-digestive-enzyme-activity-gut-microbiota-and-growth-performance-of-caspian-white-fish-rutilus-frisii-kutum-fingerlings
#14
Ali Taheri Mirghaed, Peyman Yarahmadi, Seyed Hossein Hosseinifar, Davood Tahmasebi, Nahid Gheisvandi, Alireza Ghaedi
The aim of the present study was to investigate the effects of single or combined administration of dietary fermentable fiber (Vitacel® ) and probiotic PrimaLac® on mucosal immune parameters, digestive enzyme activity, gut microbiota and growth performance of Caspian white fish (Rutilus frisii kutum) fingerlings. Fish were transferred to laboratory, acclimatized for two weeks and then fish (0.56 ± 0.026 g) were allocated into 12 tanks (30 fish per tank). Triplicate groups were fed a basal diet (Control) or basal diet supplemented with fermentable fiber [Vitacel® ] (FF), probiotic [PrimaLac® ] (P) and combined fermentable fiber and probiotic (FF + P)...
June 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29421587/mucus-glycosylation-immunity-and-bacterial-microbiota-associated-to-the-skin-of-experimentally-ulcered-gilthead-seabream-sparus-aurata
#15
Silvana Teresa Tapia-Paniagua, Diana Ceballos-Francisco, M Carmen Balebona, María Ángeles Esteban, Miguel Ángel Moriñigo
Interest in fish skin immunity and its associated microbiota has greatly increased among immunologists. The objective of this study is to know if skin ulcers may be associated with changes in the mucus composition and microbial diversity. The abundance of terminal carbohydrates, several enzymes (protease, antiprotease, peroxidase, lysozyme) and total immunoglobulin M levels were evaluated in skin mucus of experimentally ulcered gilthead seabream (Sparus aurata L.). Furthermore, the composition of the microbiota of ulcered and non-ulcered skin has been determined using Illumina Miseq technology...
April 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29414190/transcriptomic-analysis-of-changes-in-gene-expression-of-immune-proteins-of-gill-tissue-in-response-to-low-environmental-temperature-in-fathead-minnows-pimephales-promelas
#16
Simon A Wentworth, Katrina Thede, Varsha Aravindabose, Ian Monroe, Andrew W Thompson, Neil Molyneaux, Christopher L Owen, John R Burns, Agustin Gonzalez-Vicente, Jeffrey L Garvin, Randall K Packer
In the face of ongoing climate change, it is imperative to understand better the effects of temperature on immune function in freshwater teleosts. It is unclear whether previously observed changes were caused by temperature per se. We studied changes in the gill transcriptome of fathead minnows (Pimephales promelas) at low temperature to understand better the effects of temperature on immune function. De novo assembly of the transcriptome using Trinity software resulted in 73,378 assembled contigs. Annotation using the Trinotate package yielded 58,952 Blastx hits (accessions)...
March 2018: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29410862/specialized-specialists-and-the-narrow-niche-fallacy-a-tale-of-scale-feeding-fishes
#17
Matthew A Kolmann, Jonathan M Huie, Kory Evans, Adam P Summers
Although rare within the context of 30 000 species of extant fishes, scale-feeding as an ecological strategy has evolved repeatedly across the teleost tree of life. Scale-feeding (lepidophagous) fishes are diverse in terms of their ecology, behaviour, and specialized morphologies for grazing on scales and mucus of sympatric species. Despite this diversity, the underlying ontogenetic changes in functional and biomechanical properties of associated feeding morphologies in lepidophagous fishes are less understood...
January 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29367004/modulation-of-systemic-and-mucosal-immune-responses-of-catla-catla-hamilton-1822-experimentally-challenged-with-gill-monogeneans
#18
Narinder Kaur, Rahul Kumar, Dibyendu Kamilya
The present study investigated the modulation of systemic and mucosal immunity of catla (Catla catla) experimentally challenged with gill monogeneans. Fingerlings of catla (24.2 ± 1.5 g) without any parasites were randomly distributed into two groups each comprising quadruplicate tanks (10 fish per tank). The fish in the infected group were challenged with gill monogeneans by cohabitation method. The control group fish were not exposed to parasites. Serum and mucus were collected from both control and infected fish and different immunological parameters were measured at weekly interval for four weeks...
March 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29351083/transcriptional-analysis-of-immune-relevant-genes-in-the-mucus-of-labeo-rohita-experimentally-infected-with-argulus-siamensis
#19
Sonali Parida, Amruta Mohapatra, Banya Kar, Jyotirmaya Mohanty, Pramoda Kumar Sahoo
The knowledge of mucosa-associated molecular events that occur during infections is scarce despite the well-established importance of mucus in fish immunity. Using qRT-PCR, we analyzed the immune gene expression patterns in mucus of Labeo rohita experimentally infected with an ectoparasite Argulus siamensis. Mucus samples were collected at 0 h, 12 h, 24 h, 3 d, 7 d, 15 d, and 30 d post challenge of L. rohita with metanauplii of A. siamensis. All interleukins studied herein (IL 6, IL 15, and IL 1β) showed significant upregulation of expression levels in mucus of A...
March 26, 2018: Acta Parasitologica
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
#20
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 enzymes 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...
March 2018: Fish & Shellfish Immunology
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