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Fish & Shellfish Immunology

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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
#1
Maryam Modanloo, Siavash 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/28917488/gene-expression-regulation-of-the-tlr9-and-myd88-dependent-pathways-in-rock-bream-against-rock-bream-iridovirus-rbiv-infection
#2
Myung-Hwa Jung, Sung-Ju Jung
Rock bream iridovirus (RBIV), which is a member of the Megalocytivirus genus, causes severe mass mortalities in rock bream in Korea. To date, the innate immune defense mechanisms of rock bream against RBIV is unclear. In this study, we assessed the expression levels of genes related to TLR9 and MyD88-dependent pathways in RBIV-infected rock bream in high, low or no mortality conditions. In the high mortality group (100% mortality at 15 days post infection (dpi)), high levels of TLR9 and MyD88 expressions (6...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28917487/glutamate-attenuates-lipopolysaccharide-induced-oxidative-damage-and-mrna-expression-changes-of-tight-junction-and-defensin-proteins-inflammatory-and-apoptosis-response-signaling-molecules-in-the-intestine-of-fish
#3
Jun Jiang, Long Yin, Jin-Yang Li, Qian Li, Dan Shi, Lin Feng, Yang Liu, Wei-Dan Jiang, Pei Wu, Ye Zhao, Xiao-Qiu Zhou
The present study explored the possible preventive effects of dietary glutamate (Glu) on LPS-induced oxidative damage, mRNA expression changes of tight junction (TJ) proteins and defensins, inflammatory and apoptosis response signaling molecules in fish intestine. Young Jian carp were fed five diets supplemental graded levels of Glu (0, 4, 8, 16 and 32 g kg(-1) diet) for 63 days. The results indicated that Glu supplementation depressed LPS induced the production of reactive oxygen species (ROS) and severe oxidative damage (lipid peroxidation and protein oxidation) in fish intestine, which was partially due to the increased glutathione (GSH) content and antioxidant enzyme activities including superoxide dismutase (SOD), glutathione peroxidase (GPX), glutathione-S-transferase (GST), and glutathione reductase (GR) (P < 0...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28917486/effects-of-the-potential-probiotics-bacillus-aerophilus-kadr3-in-inducing-immunity-and-disease-resistance-in-labeo-rohita
#4
Dharmaraj Ramesh, Sami Souissi, Tharifkhan Shan Ahamed
The aim of the present study was to evaluate the dietary administration of Bacillus aerophilus KADR3 on enhancing the immunity and disease resistance against Aeromonas hydrophila infection in Labeo rohita. B. aerophilus culture supernatant exhibited antagonistic activity against fish pathogenic bacteria in an agar well diffusion assay. Four fish groups were fed with either of following diets containing different concentrations of B. aerophilus KADR3 (cfu g(-1)): 0 (control), 1 × 10(7) (DI), 1 × 10(8) (DII), and 1 × 10(9) (DIII) -cfu g(-1)...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916360/trancriptome-profiles-of-amur-sturgeon-spleen-in-response-to-yersinia-ruckeri-infection
#5
Shaowu Li, Ying Zhang, Yongsheng Cao, Di Wang, Hongbai Liu, Tongyan Lu
Yersinia ruckeri (YR) is the causative agent of yersiniosis which has caused significant economic losses in fish culture worldwide, including in Amur sturgeon (Acipenser schrenckii) culture. To better understand the mechanism of the immune responses to YR in Amur sturgeon, the transcriptomic profiles of the spleens from YR-infected and non-infected groups were obtained using RNA-seq techniques. The de novo assemblies yielded totally 145 670 unigenes from the two libraries. The total numbers of transcripts in YR-infected and non-infected groups were from 110 893 to 147 336, with the mean length varying from 560 to 631 (N50: from 882 to 1083)...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916359/a-class-b-scavenger-receptor-from-eriocheir-sinensis-essr-b1-restricts-bacteria-proliferation-by-promoting-phagocytosis
#6
Yao-Meng Wu, Lei Yang, Xue-Jie Li, Lu Li, Qun Wang, Wei-Wei Li
Scavenger receptors (SRs) are important pattern recognition receptors (PRRs), which play significant roles in host defense against pathogens by identifying pathogen-associated molecular patterns (PAMPs). In this study, we report the cloning and characterization of a SR from Eriocheir sinensis (EsSR-B1) which is a 500 amino acid protein encoded by a gene comprised of 2726 nucleotides with a 1503 bp open reading frame. The domains of EsSR-B1 were found to be evolutionarily conserved. EsSR-B1 was widely detected in different tissues of E...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916358/the-functional-characterization-and-comparison-of-two-single-crd-containing-c-type-lectins-with-novel-and-typical-key-motifs-from-portunus-trituberculatus
#7
Mengmeng Huang, Changkao Mu, Yuehong Wu, Fei Ye, Dan Wang, Cong Sun, Zhengbing Lv, Bingnan Han, Chunlin Wang, Xue-Wei Xu
C-type lectins are a superfamily of Ca(2+)-dependent carbohydrate-recognition proteins, which play crucial roles in innate immunity including nonself-recognition and pathogen elimination. In the present study, two single-CRD containing C-type lectins were identified from swimming crab Portunus trituberculatus (designated as PtCTL-2 and PtCTL-3). The open reading frame (ORF) of PtCTL-2 encoded polypeptides of 485 amino acids with a signal peptide and a single carbohydrate-recognition domain (CRD), while PtCTL-3's ORF encoded polypeptides of 241 amino acids with a coiled-coil region and a single-CRD...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916357/myeloid-leukemia-factor-functions-in-anti-wssv-immune-reaction-of-kuruma-shrimp-marsupenaeus-japonicus
#8
Xiao-Wu Feng, Li-Jie Huo, Jie-Jie Sun, Ji-Dong Xu, Guo-Juan Niu, Jin-Xing Wang, Xiu-Zhen Shi
Myeloid leukemia factor (MLF) plays an important role in development, cell cycle, myeloid differentiation, and regulates the RUNX transcription factors. However, the function of MLF in immunity is still unclear. In this study, an MLF was identified and characterized in kuruma shrimp Marsupenaeus japonicus, and named as MjMLF. The full-length cDNA of MjMLF contained 1111 nucleotides, which had an opening reading frame of 816 bp encoding a protein of 272 amino acids with an MLF1-interacting protein domain. MjMLF could be ubiquitously detected in different tissues of shrimp at the transcriptional level...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916356/molecular-characterization-of-polymeric-immunoglobulin-receptor-and-expression-response-to-aeromonas-hydrophila-challenge-in-carassius-auratus
#9
Li Wang, Jie Zhang, Xianghui Kong, Chao Pei, Xianliang Zhao, Li Li
The polymeric immunoglobulin receptor (pIgR) plays a pivotal role in mucosal immune response by transporting polymeric immunoglobulins onto the surface of mucosal epithelia to protect animals from invading pathogens. In this study, the full-length cDNA of pIgR was firstly cloned in Qihe crucian carp (Carassius auratus), hereafter designated as CapIgR, by using reverse transcription polymerase chain reaction and rapid amplification of cDNA ends. The molecular characterization and expression of CapIgR were investigated...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916355/grouper-stat1a-is-involved-in-antiviral-immune-response-against-iridovirus-and-nodavirus-infection
#10
Jingcheng Zhang, Xiaohong Huang, Songwei Ni, Jiaxin Liu, Yin Hu, Ying Yang, Yepin Yu, Linli Zhou, Qiwei Qin, Youhua Huang
Signal Transducer and Activator of Transcription 1 (STAT1) has been demonstrated to function as a critical mediator in multiple cell processes, such as cell proliferation, cell death, and innate immune response. Interestingly, two orthologues of human STAT1, including STAT1a and STAT1b genes have been identified in different fish. However, the detailed roles of fish STAT1a in virus replication still remained largely uncertain. Here, we cloned a STAT1a from orange-spotted grouper Epinephelus coioides (EcSTAT1a) and characterized its roles during fish virus infection...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28899777/jerusalem-artichoke-enriched-diet-on-growth-performance-immuno-hematological-changes-and-disease-resistance-against-aeromonas-hydrophila-in-asian-seabass-lates-calcarifer
#11
Sajjad Syed Raffic Ali, Kondusamy Ambasankar, Mohamed Saiyad Musthafa, Ramasamy Harikrishnan
A 45 days feeding trial was conducted to study the effect of Jerusalem artichoke (JA) on growth performance, body composition, biochemical, immuno-hematological parameters and disease resistance in Asian seabass (Lates calcarifer) fingerlings against Aeromonas hydrophila. JA was supplemented at three different levels viz., control 0, 5, 10, and 20 g kg(-1) in the commercial diet (403 g kg(-1)protein and 89 g kg (-1)lipid) in L. calcarifer. The results showed that there were no significant (P > 0...
September 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28899776/the-effect-of-temperature-on-the-mucosal-igm-antibody-response-to-dnp-klh-in-channel-catfish-ictalurus-punctatus
#12
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/28899775/unique-phagocytic-properties-of-hemocytes-of-pacific-oyster-crassostrea-gigas-against-yeast-and-yeast-cell-wall-derivatives
#13
Keisuke G Takahashi, Nakako Izumi-Nakajima, Katsuyoshi Mori
For a marine bivalve mollusk such as Pacific oyster Crassostrea gigas, the elimination of foreign particles via hemocyte phagocytosis plays an important role in host defense mechanisms. The hemocytes of C. gigas have a high phagocytic ability for baker's yeast (Saccharomyces cerevisiae) and its cell-wall product zymosan. C. gigas hemocytes might phagocytose yeast cells after binding to polysaccharides on the cell-wall surface, but it is unknown how and what kinds of polysaccharide molecules are recognized. We conducted experiments to determine differences in the phagocytic ability of C...
September 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28870858/molecular-characterization-and-expression-analysis-of-the-large-yellow-croaker-larimichthys-crocea-chemokine-receptors-cxcr2-cxcr3-and-cxcr4-after-bacterial-and-poly-i-c-challenge
#14
Xiaoxu Liu, Lisen Kang, Wei Liu, Bao Lou, Changwen Wu, Lihua Jiang
The large yellow croaker (Larimichthys crocea) has a well-developed innate immune system. We studied a component of this system, chemokine receptor CXCR family. In this study, we report the full-length open reading frames, as well as the identification and characterization of the chemokine receptor genes CXCR2 (LycCXCR2), CXCR3 (LycCXCR3), and CXCR4 (LycCXCR4) of large yellow croaker. We report that LycCXCR3 and LycCXCR4 are evolving neutrally according to PAML analyses. Quantitative real-time PCR analysis revealed that CXCR transcripts were expressed in all examined tissues...
September 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28870857/molecular-characterization-and-expression-analysis-of-interferon-gamma-in-black-seabream-acanthopagrus-schlegelii
#15
Yangxi Xiang, Wei Liu, Peng Jia, Yunlong Li, Yilin Jin, Limin Chen, Jing Zhang, Kuntong Jia, Meisheng Yi
Interferon gamma (IFN-γ) is a major component in immunological signaling and plays a key role in resisting viral infection. In this study, we identified and characterized an IFN-γ gene (AsIFN-γ) in the marine fish black seabream (Acanthopagrus schlegelii). We cloned AsIFN-γ genomic sequence, which comprises four exons, three introns and an upstream promoter including several conserved regulatory elements. The complete cDNA of AsIFN-γ was 816 bp in length and encoded a putative 194 amino acids (aa) protein with a 22 aa signal peptide, six α-helices and one nuclear localization signal (NLS)...
September 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28870856/transcriptome-analysis-of-hybrid-tilapia-oreochromis-spp-with-streptococcus-agalactiae-infection-identifies-toll-like-receptor-pathway-mediated-induction-of-nadph-oxidase-complex-and-piscidins-as-primary-immune-related-responses
#16
Chuian-Fu Ken, Chieh-Ning Chen, Chen-Hung Ting, Chieh-Yu Pan, Jyh-Yih Chen
Streptococcus agalactiae infection is one of the most significant bacterial diseases in tilapia aquaculture. Identification of immune-related genes associated with Streptococcus agalactiae infection may provide a basis for breeding selection or therapeutics to augment disease resistance. Therefore, we utilized transcriptome profiling to study the host response in tilapia following Streptococcus agalactiae infection. Based on GO and KEGG enrichment analyses, we found that differentially expressed genes are widely involved in immune-related pathways, including the induction of antimicrobial peptides...
September 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28889015/functional-characterization-of-a-reactive-oxygen-species-modulator-1-gene-in-litopenaeus-vannamei
#17
Hong-Hui He, Yi-Miao Chi, Kai Yuan, Xiao-Yun Li, Shao-Ping Weng, Jian-Guo He, Yi-Hong Chen
Reactive oxygen species (ROS) imparts a dual effect on multicellular organisms, wherein high levels are usually harmful, and low levels could facilitate in combating pathogenic microorganisms; therefore, the regulation of ROS production is critical. Previous studies have suggested that ROS contributes to resistance to the white spot syndrome virus (WSSV) or Vibrio alginolyticus in Litopenaeus vannamei. However, the regulation of ROS metabolism in L. vannamei remains elusive. In the present study, we proved that the overexpression of L...
September 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28889014/transcriptomic-and-morphological-analyses-of-litopenaeus-vannamei-intestinal-barrier-in-response-to-vibrio-paraheamolyticus-infection-reveals-immune-response-signatures-and-structural-disruption
#18
Cancan Qi, Lei Wang, Mei Liu, Keyong Jiang, Mengqiang Wang, Wei Zhao, Baojie Wang
The white shrimp Litopenaeus vannamei has been greatly impacted by Vibrio infection. In this study, we investigated the intestinal barrier response of L vannamei following challenge with Vibrio parahaemolyticus E1, by examining morphological changes and transcriptome expression levels. A total of 16,4420 unigenes were obtained from RNAseq data after quality control and assembly, and 4646 differentially expressed genes (DEGs) were identified following Vibrio challenge, of which 2469 unigenes were significantly up-regulated and 2177 were significantly down-regulated...
September 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28889013/the-core-ubiquitin-system-of-mandarin-fish-siniperca-chuatsi-can-be-utilized-by-infectious-spleen-and-kidney-necrosis-virus
#19
Runqing Huang, Jing Zhang, Guohua Zhu, Jianguo He, Junfeng Xie
The process of ubiquitination regulates various cellular processes. The ubiquitin-proteasome system (UPS) in fish, which is important for the generation of innate and adaptive immune responses to pathogens, is the target of aquatic viruses to achieve immune evasion. We cloned and characterized three genes, namely, a ubiquitin-activating enzyme (ScE1), a ubiquitin-conjugating enzyme (ScE2), and a HECT-type ubiquitin ligase (ScE3) of mandarin fish Siniperca chuatsi. The genes were expressed in all tissues and the highest levels were observed in the blood...
September 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28889012/effect-of-pea-crab-pinnotheres-vicajii-chhapgar-1957-on-immunocompetence-of-bivalve-paphia-malabarica-chemnitz-1782
#20
Deodatta S Gajbhiye, Lidita Khandeparker
The endosymbiont-host relationship between a pea crab and its bivalve host has been studied previously using bivalve's multi-physiological parameters. The present study is first of its kind that uses hemocyte's immune functionality to evaluate the symbiotic relationship between bivalve Paphia malabarica and its symbiont crab, Pinnotheres vicajii. The sampling was carried out at two stations (differed in nutrient concentration, productivity, and bacterial abundance) located along the southwest coast of India...
September 6, 2017: Fish & Shellfish Immunology
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