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https://www.readbyqxmd.com/read/28442530/breach-of-autoreactive-b-cell-tolerance-by-post-translationally-modified-proteins
#1
Jacqueline S Dekkers, Marije K Verheul, Jeroen N Stoop, Bisheng Liu, Andreea Ioan-Facsinay, Peter A van Veelen, Arnoud H de Ru, George M C Janssen, Martin Hegen, Steve Rapecki, Tom W J Huizinga, Leendert A Trouw, René E M Toes
OBJECTIVES: Over 50% of patients with rheumatoid arthritis (RA) harbour a variety of anti-modified protein antibodies (AMPA) against different post-translationally modified (PTM) proteins, including anti-carbamylated protein (anti-CarP) antibodies. At present, it is unknown how AMPA are generated and how autoreactive B cell responses against PTM proteins are induced. Here we studied whether PTM foreign antigens can breach B cell tolerance towards PTM self-proteins. METHODS: Serum reactivity towards five carbamylated proteins was determined for 160 patients with RA and 40 healthy individuals...
April 25, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28442418/tlr22-structure-and-expression-characteristic-of-barbel-chub-squaliobarbus-curriculus-provides-insights-into-antiviral-immunity-against-infection-with-grass-carp-reovirus
#2
Rong-Hua Wang, Wei Li, Yu-Ding Fan, Qiao-Lin Liu, Ling-Bing Zeng, Tiao-Yi Xiao
Grass carp reovirus (GCRV) is the most virulent agent to Grass carp, Ctenopharyngodon idella, and causes a severe infectious disease called hemorrhagic disease of grass carp. Generally, barbel chub, Squaliobarbus curriculus, a genetically closely related species to grass carp, exhibits significant resistance against GCRV infection compared to grass carp. To investigate whether the Toll-like receptor 22 (tlr22) has got a vital role against the GCRV infection, the full cDNA sequence of tlr22 from barbel chub (Sctlr22) was cloned by RACE-PCR, and the structure and expression feature were studied...
April 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28442417/cloning-expression-analysis-and-antibacterial-propertiesof-three-serum-amyloid-a-in-common-carp-cyprinus-carpio
#3
Juhua Yu, Yongkai Tang, Jianlin Li, Hongxia Li, Fan Yu, Wenjuan Yu, Feng He, Chunjie Fu, Shuntao Mao
Three serum amyloid A (SAA) genes were identified from the common carp (Cyprinus carpio) by PCR and RT-PCR. Considering both direction and sequence similarity with mammal's orthologs, they were named CcSAA3a, CcSAA3b and CcSAA1. CcSAA3b and CcSAA1 are adjacent on contig LHQP01017858, suggesting that the prototype of or the simplest SAA multigene family have occurred in common carp. A phylogenetic analysis of the SAAs indicated that the fish SAAs were closer to those of invertebrates and Ornithorhynchus anatinus, a primitive mammal, than to mammalian SAAs...
April 23, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28439473/the-behavioral-response-of-prey-fish-to-predators-the-role-of-predator-size
#4
Zhong-Hua Tang, Qing Huang, Hui Wu, Lu Kuang, Shi-Jian Fu
Predation is one of the key factors governing patterns in natural systems, and adjustments of prey behaviors in response to a predator stimulus can have important ecological implications for wild fish. To investigate the effects of predators on the behavior of prey fish and to test whether the possible effects varied with predator size, black carp (Mylopharyngodon piceus) and snakehead (Channa argus) (a size-matched predator treatment with a similar body size to prey fish and a larger predator treatment with approximately 2...
2017: PeerJ
https://www.readbyqxmd.com/read/28431387/cypermethrin-toxication-leads-to-histopathological-lesions-and-induces-inflammation-and-apoptosis-in-common-carp-cyprinus-carpio-l
#5
Harun Arslan, Selçuk Özdemir, Serdar Altun
Cypermethrin (Cyp), a known neurotoxic pesticide, is widely used in agricultural applications. In the present study, the aim was to determine the histopathological effects of Cyp toxication and evaluate the activation of inducible nitric oxide synthetase (iNOS) and 8-hydroxy-2-deoxyguanosine (8-OHdG) using an immunofluorescence assay. Thereafter, we identified the expressions of caspase 3, capsase 8, iNOS, and metallothionein 1 (MT1) genes in common carp using quantitative reverse transcription polymerase chain reaction (qRT-PCR)...
April 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28428250/functional-roles-of-globin-proteins-in-hypoxia-tolerant-ectothermic-vertebrates
#6
Angela Fago
Globins are heme-containing proteins ubiquitously expressed in vertebrates, where they serve a broad range of biological functions, directly or indirectly related to the tight control of oxygen levels and its toxic products in vivo. Perhaps the most investigated of all proteins, hemoglobin and myoglobin are primarily involved in oxygen transport and storage, but also in facilitating arterial vasodilation, suppressing mitochondrial respiration and preventing tissue oxidative damage via accessory redox enzymatic activities during hypoxia...
April 20, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28428059/the-decreased-growth-performance-and-impaired-immune-function-and-structural-integrity-by-dietary-iron-deficiency-or-excess-are-associated-with-tor-nf-%C3%AE%C2%BAb-p38mapk-nrf2-and-mlck-signaling-in-head-kidney-spleen-and-skin-of-grass-carp-ctenopharyngodon-idella
#7
Yan-Lin Guo, Wei-Dan Jiang, Pei Wu, Yang Liu, Xiao-Qiu Zhou, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Lin Feng
This study was conducted to investigate the effects of dietary iron on the growth, and immune function and structural integrity in head kidney, spleen and skin as well as the underlying signaling of young grass carp (Ctenopharyngodon idella). Total 630 grass carp (242.32 ± 0.58 g) were fed diets containing graded levels of iron at 12.15 (basal diet), 35.38, 63.47, 86.43, 111.09, 136.37 mg/kg (diets 2-6 were added with ferrous fumarate) and 73.50 mg/kg (diet 7 was added with ferrous sulfate) diet for 60 days...
April 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28427618/effects-of-high-intensity-unltrasound-on-structural-and-physicochemical-properties-of-myosin-from-silver-carp
#8
Ru Liu, Qing Liu, Shanbai Xiong, Yicheng Fu, Liang Chen
Myosin from silver carp was sonicated with varying power output (100, 150, 200 and 250W) for 3, 6, 9, and 12min. The changes in the structure and physicochemical properties of myosin were evaluated by dynamic light scattering, SDS-PAGE and some physicochemical indexes. The ultrasound treatments induced a significant conversion of myosin aggregates to smaller ones with a more uniform distribution, and obvious enhancement in solubility. The structure of myosin was also notably changed by sonication, with a decrease in Ca(2+)-ATPase activity and SH content, and an increase in surface hydrophobicity...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28425565/immunolocalization-of-jian-carp-cyprinus-carpio-var-jian-cathepsin-b-cloning-expression-characterization-and-antibody-preparation
#9
Shu-Hong Li, Ran Li, Hai-Xia Zhong, Xiu-Hua Chen, Ai-Ping Liu, Juan Yang, Qiang Hu, Qin-Qin Ke, Mei-Liang Li
Cathepsin B (CatB) cDNA of 759 bp from Jian carp (Cyprinus carpio var. Jian) with amino acid similarity of 99.6% to common carp was cloned. The mature CatB was expressed in Escherichia coli BL21 transferred with vector CatB-pET-30a. It was purified and identified as a single band (29 kDa) on SDS-PAGE. Optimum CatB activity was observed at 40 °C and pH 5.5. Mouse anti-CatB polyclonal antibody with a high titer of 1:256000 was prepared successfully and shown to specifically recognize the antigen both in prokaryotic cells and in the tissues of Jian carp according to western blotting and immunohistochemistry results...
April 20, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28425012/a-study-of-the-damage-of-the-intestinal-mucosa-barrier-structure-and-function-of-ctenopharyngodon-idella-with-aeromonas-hydrophila
#10
Wei-Guang Kong, Si-Si Li, Xiao-Xuan Chen, Yu-Qing Huang, Ying Tang, Zhi-Xin Wu
The aim of this study is to explore the effect of Aeromonas hydrophila on the intestinal mucosal barrier structure and intestinal permeability in grass carp (Ctenopharyngodon idella). Histopathological examinations showed that A. hydrophila induced severe intestinal lesions, including inflammatory cell infiltration and intestinal villus fusion and swelling. Messenger RNA (mRNA) expression of the inflammatory cytokines TNF-α, IL-1β, IL-8, IL-10 and MyD88 was significantly increased after infection with A. hydrophila...
April 19, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28424886/detection-of-koi-herpesvirus-khv-using-a-monoclonal-antibody-against-cyprinus-carpio-igm
#11
Yingying Li, Shucheng Zheng, Qing Wang, Sven M Bergmann, Weiwei Zeng, Yingying Wang, Chun Liu, Cunbin Shi
Koi herpesvirus disease (KHVD) is associated with high mortality in both common carp and koi carp (Cyprinus carpio L.) worldwide. The indirect detection of fish viruses based on the identification of antibodies has emerged as a practical and reliable means of diagnosis. Thus, it is important to create monoclonal antibodies (MAbs) against carp IgM. By using hybridoma-monoclonal antibody technology, one hybridoma cell line secreting MAbs against IgM from carp was established. In western blot analysis, the secreted MAb from cell line A5-E10 recognized the heavy chain of IgM from common carp or koi but did not react with immunoglobulins from three different fish species: grass carp (Ctenopharyngodon idella), tilapia (Oreochromis mossambicus) and Mandarin fish (Siniperca chuatsi)...
April 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28422520/low-level-laser-therapy-improves-performance-and-reduces-fatigue-in-competitive-cyclists
#12
Fábio J Lanferdini, Rodrigo R Bini, Bruno M Baroni, Kelli D Klein, Felipe P Carpes, Marco A Vaz
Evidence supports that low-level laser therapy (LLLT) minimizes fatigue effects on muscle performance. However, the ideal LLLT dosage to improve athletes' performance during sports activities, such as cycling, is still unclear. Therefore, the goal of this study was to investigate the effects of different LLLT dosages on cyclists' performance in time-to-exhaustion tests. In addition, we looked at the effects of LLLT on the frequency content of the EMG signals to assess fatigue mechanisms. Twenty male competitive cyclists participated in a crossover, randomized, double-blind and placebo-controlled trial...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28422294/antiviral-activity-of-exopolysaccharides-from-arthrospira-platensis-against-koi-herpesvirus
#13
M Reichert, S M Bergmann, J Hwang, R Buchholz, C Lindenberger
Although koi herpesvirus (KHV) has a history of causing severe economic losses in common carp and koi farms, there are still no treatments available on the market. Thus, the aim of this study was to test exopolysaccharides (EPS) for its antiviral activity against KHV, by monitoring inhibition and cytotoxic effects in common carp brain cells. These substances can be easily extracted from extracellular algae supernatant and were identified as groups of sulphated polysaccharides. In order to reach this aim, Arthrospira platensis, which is well known for its antiviral activity of intra- and extracellular compounds towards mammalian herpesviruses, was investigated as standard organism and compared to commercial antiviral drug, ganciclovir, which inhibits the viral DNA polymerization...
April 19, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28421365/grass-carp-reovirus-outer-capsid-proteins-vp5-and-vp7-interact-in-vitro
#14
Weisha Liu, Hao Wang, Fei Yu, Liqun Lu
Grass carp reovirus (GCRV) causes viral hemorrhagic disease in cultured grass carp. However, there is no effective means of controlling GCRV. Previous studies have shown, by cryoelectron microscopy, that the outer capsid of GCRV is composed of 200 trimers of VP5-VP7 heterodimers. However, confirmation of this interaction between VP5 and VP7 through molecular biochemistry is still lacking. This study characterized the interactions between VP5 and VP7 in vitro. VP5 was shown to interact with VP7 in a commercial yeast-two-hybrid screen...
April 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28421268/using-a-population-model-to-inform-the-management-of-river-flows-and-invasive-carp-cyprinus-carpio
#15
John D Koehn, Charles R Todd, Brenton P Zampatti, Ivor G Stuart, Anthony Conallin, Leigh Thwaites, Qifeng Ye
Carp are a highly successful invasive fish species, now widespread, abundant and considered a pest in south-eastern Australia. To date, most management effort has been directed at reducing abundances of adult fish, with little consideration of population growth through reproduction. Environmental water allocations are now an important option for the rehabilitation of aquatic ecosystems, particularly in the Murray-Darling Basin. As carp respond to flows, there is concern that environmental watering may cause floodplain inundation and provide access to spawning habitats subsequently causing unwanted population increase...
April 18, 2017: Environmental Management
https://www.readbyqxmd.com/read/28416876/comparison-of-rheological-behaviors-and-nanostructure-of-bighead-carp-scales-gelatin-modified-by-different-modification-methods
#16
Tao Huang, Zong-Cai Tu, Hui Wang, Wei Liu, Lu Zhang, Yan Zhang, Xin-Chen ShangGuan
In this study, microbial transglutaminase (MTGase) and pectin were compared to modify bighead carp (Hypophthalmichthys nobilis) scale gelatin. The functional properties of modified fish scales gelatin (FSG) were largely improved, including melting temperature and rheological behavior. While, modification methods decreased the triple-helix content and destroyed the single left-hand helix chain of modified FSG as investigated by X-ray diffraction. MTGase could induce the denser and finer gels network, but had none significant effect on nanostructural properties of fish gelatin...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28416382/isolation-pathogenicity-and-characterization-of-a-novel-bacterial-pathogen-streptococcus-uberis-from-diseased-mandarin-fish-siniperca-chuatsi
#17
Xia Luo, Xiaozhe Fu, Guoli Liao, Ouqin Chang, Zhibin Huang, Ningqiu Li
In recent years, mandarin fish had a high mortality rate associated with abnormal swimming, exophthalmia, corneal opacity and eye hemorrhage on a fish farm located at Foshan city, Guangdong province, China. Three isolates of Gram-positive, chain-forming cocci were recovered from moribund fish, and designated as SS131025-1, SS131025-2, and SS131025-3. These isolates were identified as Streptococcus uberis according to their morphologic and physio-biochemical characteristics as well as phylogenetic analysis based on their 16S rRNA and GapC gene sequences...
April 14, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28408167/purification-characterization-and-expression-of-transferrin-from-rainbow-trout-seminal-plasma
#18
Joanna Nynca, Mariola A Dietrich, Mikołaj Adamek, Dieter Steinhagen, Barbara Bilińska, Anna Hejmej, Andrzej Ciereszko
Transferrin (TF) is recognized as a multifunctional protein and has been implicated in antioxidative, antimicrobial protection, growth, differentiation and cytoprotection effects. An efficient, original three-step isolation procedure for TF consisting in hydrophobic interaction chromatography, gel filtration and preparative electrophoresis was developed. Rainbow trout TF was found to be N-glycosylated (not O-glycosylated) and phosphorylated at all serine, threonine, and tyrosine residues. The protein consists of several proteoforms with an average molecular weight of 76...
April 11, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28402331/performances-of-the-hybrid-between-cyca-nucleocytplasmic-hybrid-fish-and-scattered-mirror-carp-in-different-culture-environments
#19
Xiangjiang Liu, Hongwei Liang, Zhong Li, Yongjun Liang, Cuiyun Lu, Chitao Li, Yumei Chang, Guiwei Zou, Guangfu Hu
To improve the performance of growth traits and survival in common carp, CyCa nucleocytoplasmic hybrid fish (C) was used as parental fish for hybridization with Russian scattered mirror carp (R). Performances in morphological characters, growth traits and survival rate were compared among the purebreds (CC &RR) and crossbreds (RC &CR) at different time period in solitary and communal rearing system, respectively. The results demonstrated that both RC and CR crossbreds inherited the grey skin color type from the mirror carp, and got the full-scale pattern from the CyCa nucleocytoplasmic hybrid fish, which suggested that the grey color dominated to red color and full-scale dominated to scattered scale...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28400765/role-of-bacillus-licheniformis-vs16-derived-biosurfactant-in-mediating-immune-responses-in-carp-rohu-and-its-application-to-the-food-industry
#20
Sib Sankar Giri, Shib Sankar Sen, Jin Woo Jun, V Sukumaran, Se Chang Park
Multifarious applications of Bacillus licheniformis VS16-derived biosurfactant were explored. Labeo rohita fingerlings were injected intraperitoneally with 0.1 mL of phosphate-buffered saline (PBS) containing purified biosurfactant at 0 (control), 55 (S55), 110 (S110), 220 (S220), or 330 (S330) μg mL(-1) concentrations. Various immunological parameters and the expression of immune-related genes were measured at 7, 14, and 21 days post-administration (dpa). At 21 dpa, fish were challenged with Aeromonas hydrophila and mortality was recorded for 14 days...
2017: Frontiers in Microbiology
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