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Fish & Shellfish Immunology

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https://www.readbyqxmd.com/read/28082059/corrigendum-to-anti-infective-mannose-receptor-immune-mechanism-in-large-yellow-croaker-larimichthys-crocea-fish-shellfish-immunol-54-2016-jul-257-265
#1
Xiangli Dong, Jiji Li, Jianyu He, Wei Liu, Lihua Jiang, Yingying Ye, Changwen Wu
No abstract text is available yet for this article.
January 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28065629/the-effects-of-emodin-on-cell-viability-respiratory-burst-and-gene-expression-of-nrf2-keap1-signaling-molecules-in-the-peripheral-blood-leukocytes-of-blunt-snout-bream-megalobrama-amblycephala
#2
Zhenxin Zhao, Jun Xie, Bo Liu, Xianping Ge, Changyou Song, Mingchun Ren, Qunlan Zhou, Linghong Miao, Huimin Zhang, Fan Shan, Zhenfei Yang
We determined the effects of emodin on the cell viability, respiratory burst activity, mRNA levels of antioxidative enzymes (Cu-Zn SOD, CAT and NOX2), and gene expressions of the Nrf2-Keap1 signaling molecules in the peripheral blood leukocytes of blunt snout bream. Triplicate groups of cultured cells were treated with different concentrations of emodin (0.04-25 μg/ml) for 24 h. Results showed that the emodin caused a dramatic loss in cell viability, and occurred in a dose-dependent manner. Emodin exposure (1-25 μg/ml) were significantly induced the ROS generation compared to the control...
January 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28063953/pathological-analysis-detection-of-antigens-fasl-expression-analysis-and-leucocytes-survival-analysis-in-tilapia-oreochromis-niloticus-after-infection-with-green-fluorescent-protein-labeled-streptococcus-agalactiae
#3
Jingyuan Wang, Jinying Wu, Liyuan Yi, Zengxin Hou, Wensheng Li
The pathogenesis of Streptococcus agalactiae infection in tilapia has not been fully described. To understand this, we investigated the clinic-pathological features of acute experimental septicemia in tilapia (Oreochromis niloticus) after receiving an intra-peritoneal injection with S. agalactiae THN-1901GFP. Immunohistochemistry and sections of pathological tissues were used to estimate the level of damage in the head-kidney, liver, spleen and trunk-kidney. The expression of FasL was analyzed by western blotting in these samples based on their damage levels...
January 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28063952/transcriptome-profiling-of-spleen-provides-insights-into-the-antiviral-mechanism-in-schizothorax-prenanti-after-poly-i-c-challenge
#4
Xiaogang Du, Yunkun Li, Dong Li, Fangliang Lian, Shiyong Yang, Jiayun Wu, Hanmei Liu, Guixian Bu, Fengyan Meng, Xiaohan Cao, Xianyin Zeng, Huaiyu Zhang, Zhiyu Chen
Schizothorax prenanti (S. prenanti) is an important economical cold-water fish species in southwestern China, but it is susceptible to various pathogens infection. In order to clearly elucidate the antiviral mechanism, in this study, we have analyzed the transcriptome of S. prenanti spleen after challenge with the virus mimic, poly (I:C) (pIC), using next generation sequencing technology (RNA-seq). A total of 313 differential expressed genes (DEGs) in spleen at 24 h were obtained after pIC treatment, including 268 significantly up-regulated unigenes (fold change > 2) and 45 significantly down-regulated unigenes (fold change > 2)...
January 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28063951/transcriptomic-analysis-of-spleen-infected-with-infectious-salmon-anemia-virus-reveals-distinct-pattern-of-viral-replication-on-resistant-and-susceptible-atlantic-salmon-salmo-salar
#5
Phillip Dettleff, Thomas Moen, Nina Santi, Victor Martinez
The infectious salmon anemia virus (ISAv) produces a systemic infection in salmonids, causing large losses in salmon production. However, little is known regarding the mechanisms exerting disease resistance. In this paper, we perform an RNA-seq analysis in Atlantic salmon challenged with ISAv (using individuals coming from families that were highly susceptible or highly resistant to ISAv infection). We evaluated the differential expression of both host and ISAv genes in a target organ for the virus, i.e. the spleen...
January 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28063950/dietary-alpha-linolenic-acid-linoleic-acid-ratios-modulate-immune-response-physical-barrier-and-related-signaling-molecules-mrna-expression-in-the-gills-of-juvenile-grass-carp-ctenopharyngodon-idella
#6
Yun-Yun Zeng, Lin Feng, Wei-Dan Jiang, Yang Liu, Pei Wu, Jun Jiang, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Xiao-Qiu Zhou
This study was conducted to explore the possible effects of dietary ALA/LNA ratios on the gill immunity, tight junction and antioxidant capacity, and the related signaling factor mRNA levels of juvenile grass carp (Ctenopharyngodon idella). Fish were fed diets with different ALA/LNA ratios (0.01, 0.34, 0.68, 1.03, 1.41, 1.76 and 2.15) for 60 days. The present results showed that ALA/LNA ratio of 1.03 significantly enhanced lysozyme and acid phosphatase activities, complement 3 contents, promoted mRNA levels of antimicrobial peptides (Hepcidin and liver expression antimicrobial peptide-2), anti-inflammatory cytokines (interleukin 10 and transforming growth factor β1) and inhibitor protein κBα, whereas suppressed pro-inflammatory cytokines (interleukin 1β, interleukin 8, tumor necrosis factor a and interferon γ2), and signal molecules (IκB kinase β, IκB kines γ and nuclear factor κB p65) mRNA levels in the gill, indicating that optimal dietary ALA/LNA ratio improve gill immunity of juvenile fish...
January 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28062189/evaluation-of-marine-psychrophile-psychrobacter-namhaensis-so89-as-a-probiotic-in-nile-tilapia-oreochromis-niloticus-diets
#7
Sarah O Makled, Amira M Hamdan, Abdel-Fattah M El-Sayed, Elsayed E Hafez
Marine environment represents a promising source of new, unconventional bioactive compounds with health-promoting abilities, which can be used as food supplements. The present study was carried out to evaluate the efficacy of marine Psychrobacter namhaensis SO89 on growth performance and immune response of Nile tilapia (Oreochromis niloticus). P. namhaensis were isolated from marine environments and phylogenetically identified by 16S rRNA gene sequences. The bacterial isolate was incorporated in Nile tilapia diets (30% crude protein) at three concentrations (0...
January 3, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28034836/the-ciona-intestinalis-immune-related-galectin-genes-cilgals-a-and-cilgals-b-are-expressed-by-the-gastric-epithelium
#8
Daniela Parrinello, Maria Antonietta Sanfratello, Aiti Vizzini, Lelia Testasecca, Nicolò Parrinello, Matteo Cammarata
The transcription of two Ciona intestinalis galectin genes (CiLgals-a and CiLgals-b) is uparegulated by LPS in the pharynxis (hemocytes, vessel epithelium, endostilar zones) which is retained the main organ of the immunity. In this ascidian, for the first time we show, by immunohistochemistry and in situ hybridization methods, that these two immune-related genes are expressed in the gastric epithelium of naïve ascidians, whereas the galectins appear to be only contained in the intestine columnar epithelium...
December 26, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28034835/comparative-evaluation-of-dietary-probiotics-bacillus-subtilis-wb60-and-lactobacillus-plantarum-kctc3928-on-the-growth-performance-immunological-parameters-gut-morphology-and-disease-resistance-in-japanese-eel-anguilla-japonica
#9
Seunghan Lee, Kumar Katya, Youngjin Park, Seonghun Won, Minji Seong, Ali Hamidoghli, Sungchul C Bai
The current experiment was conducted to evaluate and compare the efficacy of two different probiotics Bacillus subtilis WB60 and Lactobacillus plantarum KCTC3928 in diet of Japanese eel, Anguilla japonica. Seven experimental diets were formulated to contain no probiotics (CON), three graded levels of B. subtilis at 10(6) (BS1), 10(7) (BS2), 10(8) (BS3) and L. plantarum at 10(6) (LP1), 10(7) (LP2), 10(8) (LP3) CFU/g diet. Twenty fish averaging 8.29 ± 0.06 g were distributed in to 21 aquaria and were randomly assigned to one of the experimental diets in triplicate groups...
December 26, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28034834/tissue-localization-of-piscidin-host-defense-peptides-during-striped-bass-morone-saxatilis-development
#10
Scott A Salger, Benjamin J Reading, Edward J Noga
Infectious diseases are a major cause of larval mortality in finfish aquaculture. Understanding ontogeny of the fish immune system and thus developmental timing of protective immune tissues and cells, may help to decrease serious losses of larval fishes when they are particularly vulnerable to infection. One component of the innate immune system of fishes is the host-defense peptides, which include the piscidins. Piscidins are small, amphipathic, α-helical peptides with a broad-spectrum of action against viral, bacterial, fungal, and protozoan pathogens...
December 26, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027987/leucine-rich-repeats-containing-protein-functions-in-the-antibacterial-immune-reaction-in-stomach-of-kuruma-shrimp-marsupenaeus-japonicus
#11
Xiu-Zhen Shi, Xiao-Wu Feng, Jie-Jie Sun, Xiao-Fan Zhao, Jin-Xing Wang
Leucine rich repeat (LRR) motif exists in many immune receptors of animals and plants. Most LRR containing (LRRC) proteins are involved in protein-ligand and protein-protein interaction, but the exact functions of most LRRC proteins were not well-studied. In this study, an LRRC protein was identified from kuruma shrimp Marsupenaeus japonicus, and named as MjLRRC1. MjLRRC1 was consistently expressed in different tissues of normal shrimp with higher expression in gills and stomach. At the transcriptional level, there were no significant changes of MjLRRC1 after injection of Vibrio anguillarum or Staphylococcus aureus in gills and hepatopancreas...
December 25, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027988/the-immune-response-of-the-c-jun-in-the-black-tiger-shrimp-penaeus-monodon-after-bacterial-infection
#12
Gongfang Shi, Chao Zhao, Mingjun Fu, Lihua Qiu
The transcription factor C-Jun widely exists in vertebrates and invertebrates and plays an important role in various kinds of stimulus response. In this study, PmC-jun gene was first cloned from Penaeus monodon. The full-length cDNA of PmC-jun was 1857 bp in length and included an 879 bp open reading frame (ORF), which encoded 293 amino acids. qRT-PCR analysis results showed that PmC-jun mRNAs were ubiquitously expressed in all the examined tissues. The highest expression level was observed in gill, followed by hepatopancreas...
December 24, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027986/alpha-2-macroglobulin-is-a-modulator-of-prophenoloxidase-system-in-pacific-white-shrimp-litopenaeus-vannamai
#13
Sirikwan Ponprateep, Tipachai Vatanavicharn, Chu Fang Lo, Anchalee Tassanakajon, Vichien Rimphanitchayakit
The shrimp multifunctional protein alpha-2-macroglobulin (A2M) is abundantly expressed in plasma, highly up-regulated upon microbial infection and involved in several immune pathways such as blood clotting system, phagocytosis and melanization. Herein, the function of LvA2M from Litopenaeus vannamei on the prophenoloxidase (proPO) system is reported. The recombinant (r)LvA2M produced strongly and specifically inhibited trypsin and the PO activity in shrimp plasma in a dose-dependent manner. Silencing of LvA2M led to an increase in the PO activity in shrimp plasma although the expression of proPO-associated genes, proPO-activating enzyme (PPAE) and prophenoloxidase (proPO) but not the proPO-activating factor (PPAF) was down-regulated...
December 24, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027985/characterization-of-basic-immune-function-parameters-in-the-fathead-minnow-pimephales-promelas-a-common-model-in-environmental-toxicity-testing
#14
Leah M Thornton, Meriel C LeSueur, Alexandra T Yost, Dane A Stephens, James T Oris, Marlo K Sellin Jeffries
The fathead minnow (Pimephales promelas) is an environmental sentinel species, commonly used in toxicity testing. However, there is a lack of data regarding basic immune function in this species. To improve the usefulness of the fathead minnow as a model for basic immune function and immunotoxicity, this study sought to 1) compare the differential expression of immune function genes in naïve fathead minnows and 2) determine the effects of pathogen exposure on immune gene expression and spleen index. To accomplish this, kidney, spleen and liver tissue were collected three days post injection (dpi) from adult male fathead minnows from each of the following groups: 1) uninjected control 2) sham-injected (Hank's balanced salt solution) and 3) pathogen-injected (Yersinia ruckeri)...
December 24, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027984/high-carotenoids-content-can-enhance-resistance-of-selected-pinctada-fucata-families-to-high-temperature-stress
#15
Zihao Meng, Bo Zhang, Baosuo Liu, Haimei Li, Sigang Fan, Dahui Yu
Carotenoids are a class of natural antioxidants widely found in aquatic, and they have significant effects on the growth, survival, and immunity of these organisms. To investigate the mechanisms of carotenoids in high temperature resistance, we observed the immune response of selected pearl oyster Pinctada fucata (Akoya pearl oyster) families with different carotenoids contents to high temperature stress. The results indicated that the survival rate (SR) of P. fucata decreased significantly with increase in temperature from 26 °C to 34 °C and with the decrease of total carotenoids content (TCC); when the TCC was higher, the SR tended to be higher...
December 24, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027983/effect-of-ammonia-n-and-pathogen-challenge-on-complement-component-8%C3%AE-and-8%C3%AE-expression-in-the-darkbarbel-catfish-pelteobagrus-vachellii
#16
Chuanjie Qin, Ting Shao, Daxian Zhao, Huiguo Duan, Zhengyong Wen, Dengyue Yuan, Huatao Li, Zemin Qi
The complement components C8α and C8β mediate the formation of the membrane attack complex (MAC) to resist pathogenic bacteria and play important roles in innate immunity. Full-length complement C8α (Pv-C8α) and C8β (Pv-C8β) cDNA were identified in the darkbarbel catfish Pelteobagrus vachellii, and their mRNA expression levels were analyzed after ammonia-N and pathogen treatment. The Pv-C8α gene contained 1983 bp, including a 1794-bp open reading frame (ORF) encoding 598 amino acids. The Pv-C8β gene contained 1952 bp, including a 1761-bp ORF encoding 587 amino acids...
December 24, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28025158/characterization-and-function-analysis-of-interleukin-1-receptor-associated-kinase-1-irak-1-from-fenneropenaeus-penicillatus
#17
Youhou Xu, Yucong Huang, Shuanghu Cai
The interleukin-1 receptor-associated kinase-1 (IRAK-1) is an important adapter protein which links downstream of MyD88, and involved in the complex composed of MyD88 and TRAF6 to activate TLRs signaling pathway. In this study, an IRAK-1 homolog (FpIRAK-1) was cloned from the red tail shrimp Fenneropenaeus penicillatus. The ORF of FpIRAK-1 consisted of 2874 bp encoding a protein of 957 amino acids which contains a death domain (DD) and a catalytic domain of serine/threonine kinases (STKc). Homology analysis revealed that the predicted amino acid sequence of FpIRAK-1 shared 71% similarities with IRAK-1 of Litopenaeus vannamei...
December 24, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28025160/characterisation-of-arginase-paralogues-in-salmonids-and-their-modulation-by-immune-stimulation-infection
#18
Ottavia Benedicenti, Tiehui Wang, Eakapol Wangkahart, Douglas J Milne, Jason W Holland, Catherine Collins, Christopher J Secombes
In this study we show that four arginase isoforms (arg1a, arg1b, arg2a, arg2b) exist in rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar). We have characterised these molecules in terms of a) sequence analysis, b) constitutive expression in different tissues, and modulated expression following c) stimulation of head kidney macrophages in vitro, or d) vaccination/infection with Yersinia ruckeri and e) parasite infection (AGD caused by Paramoeba perurans and PKD caused by Tetracapsuloides bryosalmonae)...
December 23, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28025159/anti-apoptotic-genes-bcl-2-and-bcl-xl-overexpression-can-block-iridovirus-serine-threonine-kinase-induced-bax-mitochondria-mediated-cell-death-in-gf-1%C3%A2-cells
#19
Latif Reshi, Hua-Ven Wang, Cho-Fat Hui, Yu-Chin Su, Jiann-Ruey Hong
Although serine/threonine (ST) kinase is known to induce host cell death in GF-1 cells, it remains unclear how ST kinase induces mitochondrial function loss. In the present study, we addressed the issue of mitochondrial function loss by determining whether the Bcl-2 family members Bcl-2 and Bcl-xL can prevent ST kinase-induced cell death activity via interacting with the pro-apoptotic gene Bax. Grouper fin cells (GF-1) carrying EGFP-Bal-xL and EGFP-Bcl-2 fused genes were selected, established in cell culture, and used to examine the involvement of Bcl-2 and Bcl-xL overexpression in protection of GF-1 cells from the effects of the giant sea perch iridovirus (GSIV) ST kinase gene...
December 23, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28017903/characterization-and-expression-analysis-of-an-intelectin-gene-from-megalobrama-amblycephala-with-excellent-bacterial-binding-and-agglutination-activity
#20
Zhujin Ding, Xiaoheng Zhao, Qifeng Zhan, Lei Cui, Qianhui Sun, Li Lin, Weimin Wang, Hong Liu
Intelectin is a recently discovered lectin that plays vital roles in the innate immune response, iron metabolism and early embryogenesis. The structure, expression pattern and function of intelectin in mammals and amphibians have been well studied, while not well known in fish. In this study, we cloned a intelectin (MamINTL) gene from blunt snout bream (Megalobrama amblycephala), examined its expression patterns and explored its roles in innate immune response. The MamINTL cDNA encoded 312 amino acids, with a pro-protein of 34 kDa...
December 22, 2016: Fish & Shellfish Immunology
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