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Fish & Shellfish Immunology

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https://www.readbyqxmd.com/read/29792927/bacillus-subtilis-as-probiotic-candidate-for-red-sea-bream-growth-performance-oxidative-status-and-immune-response-traits
#1
Amr I Zaineldin, Sayed Hegazi, Shunsuke Koshio, Manabu Ishikawa, Abdulnasser Bakr, Abeer M S El-Keredy, Mahmoud A O Dawood, Serge Dossou, Weilong Wang, Zhang Yukun
The effects of dietary administration of Bacillus subtilis on the growth, digestive enzyme activity, blood chemistry, oxidative status and immune response of red sea bream (Pagrus major) were evaluated in the current study. Fish fed five different levels of B. subtilis at 0 (BS0), 1 × 104 (BS1), 1 × 106 (BS2), 1 × 108 (BS3) and 1 × 1010 (BS4) CFU kg-1 diet for 60 days. The obtained results showed that B. subtilis supplementation significantly improved growth performance (FBW, WG and SGR), feed utilization (FI, FCE, PER and PG) and whole-body protein content when compared to the control group (P < 0...
May 21, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29782917/detoxification-and-immunoprotection-of-zn-ii-curcumin-in-juvenile-pacific-white-shrimp-litopenaeus-vannamei-feed-with-aflatoxin-b1
#2
Ying-Ying Yu, Jin Niu, Pen Yin, Yong-Jian Liu, Li-Xia Tian, Donghui Xu
Aflatoxins, which was produced by Aspergillus flavus or Aspergillus parasiticus fungi during grain and feed processing or storage, could cause severe health problems and reduction of yield during shrimp cultures. To evaluate toxic effects of aflatoxin B1 (AFB1) in juvenile Pacific white shrimp (Litopenaeus vannamei) and potential protective effect of Zn(II)-curcumin (Zn-CM), four experimental diets (control, 500 μg/kg AFB1, 500 μg/kg AFB1+100 mg/kg Zn-CM, 500 μg/kg AFB1+200 mg/kg Zn-CM) were formulated in quadruplicate to feed the shrimp for 8 weeks...
May 18, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29782916/identification-of-amino-acid-residues-in-infectious-hematopoietic-necrosis-virus-ihnv-nv-protein-necessary-for-viral-replication-and-pathogenicity
#3
Yang Wu, Li Wang, Tiantian Guo, Yanping Jiang, Xinyuan Qiao, Li Sun, Min Liu, Lijie Tang, Yigang Xu, Yijing Li
Our previous studies demonstrated that the nonstructural NV protein of infectious hematopoietic necrosis virus (IHNV) was essential for efficient viral replication and pathogenicity, and that the amino acid residues 32 EGDL35 of the NV protein were responsible for nuclear localization, and played important roles in suppressing IFN and inhibiting NF-κB activity. However, little is known about the influence of 32 EGDL35 on IHNV replication and pathogenicity. In the present study, two recombinant IHNV strains with deletions of NV 32 EGDL35 were generated and the effect on IHNV replication and pathogenicity was explored...
May 18, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29778844/identification-of-micrornas-with-heat-stress-responsive-and-immune-properties-in-marsupenaeus-japonicus-based-on-next-generation-sequencing-and-bioinformatics-analysis-essential-regulators-in-the-heat-stress-host-interactions
#4
Jinbin Zheng, Jiawen Cao, Yong Mao, Yongquan Su, Jun Wang
Summer mortality syndrome is one of the most serious issue for Marsupenaeus japonicus aquaculture in China. Since it causes massive economic loss and threatens sustainability of M. japonicus aquaculture industry, thus, there is an urgent desire to reveal the heat stress-host interactions mechanisms that lead to mass mortalities of M. japonicus in hot summer months. MicroRNAs (miRNAs) are small noncoding RNAs that involved in regulation of diverse biological processes, including stress and immune response, and might serve as potential regulators in the heat stress-host interactions...
May 17, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29778843/a-synbiotic-improves-the-immunity-of-white-shrimp-litopenaeus-vannamei-metabolomic-analyses-reveal-compelling-evidence
#5
Truong-Giang Huynh, Ann-Chang Cheng, Chia-Chun Chi, Kuo-Hsun Chiu, Chun-Hung Liu
In this study, we examined the synergistic effects of a diet-administered synbiotic comprising galactooligosaccharide (GOS) and the probiotic Lactobacillus plantarum 7-40 on immune responses, immune-related gene expressions, and disease resistance to Vibrio alginolyticus in white shrimp Litopenaeus vannamei. To unravel the regulatory role of the synbiotic in activating the immune system of shrimp, 1 H nuclear magnetic resonance (NMR)-based metabolomic analyses were used to investigate hepatopancreas metabolites, then significantly altered metabolites were confirmed in both the hepatopancreas and plasma by reverse-phase high-performance liquid chromatography (RP-HPLC) and spectrophotometric analyses...
May 17, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29777766/immune-response-and-protective-effect-against-spring-viremia-of-carp-virus-induced-by-intramuscular-vaccination-with-a-swcnts-dna-vaccine-encoding-matrix-protein
#6
Chen Zhang, Zhao Zhao, Gao-Yang Liu, Jian Li, Gao-Xue Wang, Bin Zhu
To elicit the immune protective of vaccine against the highly contagious and pathogenic disease caused by spring viremia of carp virus (SVCV), a novel functionalized single-walled carbon nanotubes (SWCNTs) were applied as a delivery vehicle for DNA vaccine. In this study, we report a SWCNTs-DNA vaccine encoding matrix protein of SVCV which, when injected in the muscle at a dose of 10 μg SWCNTs-pcDNA-M vaccine, confers up to 51.3% protection against intraperitoneal challenge with SVCV. In addition, SWCNTs as a promising vehicle can enhance about 17...
May 16, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29775741/replacement-of-fishmeal-by-spirulina-arthrospira-platensis-affects-growth-immune-related-gene-expression-in-gibel-carp-carassius-auratus-gibelio-var-cas-iii-and-its-challenge-against-aeromonas-hydrophila-infection
#7
Shenping Cao, Peiyu Zhang, Tao Zou, Shuzhan Fei, Dong Han, Junyan Jin, Haokun Liu, Yunxia Yang, Xiaoming Zhu, Shouqi Xie
The present study examined the effect of dietary spirulina, Arthrospira platensis on growth performance, blood physiological indices, immune-related gene expressions and resistance of juvenile gibel carp against Aeromonas hydrophila infection. Four isonitrogenous (360 g kg-1 ) and isolipidic (90 g kg-1 ) diets were formulated with containing different levels of spirulina powder of 0 g (SP0, the control diet), 3.38 g (SP3.38), 6.76 g (SP6.76) and 13.52 g (SP13.52) per 100 g diet to replace 0%, 25%, 50% and 100% of fishmeal protein, respectively...
May 15, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29775740/eriocheir-sinensis-microrna-7-targets-crab-myd88-to-enhance-white-spot-syndrome-virus-replication
#8
Ying Huang, Wen Wang, Zhiqiang Xu, Jianlin Pan, Zhe Zhao, Qian Ren
MicroRNAs (miRNAs) are non-coding RNAs that regulate gene expression at the posttranscriptional level. In this study, the function of microRNA-7 (miR-7) in host-virus interaction was investigated. Replication of White spot syndrome virus (WSSV) was enhanced with the overexpression of miR-7 and inhibited with the downregulation of miR-7 by using anti-miRNA oligonucleotide AMO-miR-7. The target gene of miR-7 was predicted using bioinformatics methods. Results showed that crab myeloid differentiation factor 88 (Myd88) could be targeted by miR-7...
May 15, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29775739/effects-of-environmental-factors-on-c-type-lectin-recognition-to-zooxanthellae-in-the-stony-coral-pocillopora-damicornis
#9
Zhi Zhou, Shuimiao Zhao, Junyi Ni, Yilu Su, Lingui Wang, Yanlai Xu
C-type lectin is a superfamily of Ca2+ -dependent carbohydrate-recognition proteins that play significant roles in nonself-recognition and pathogen clearance. In the present study, a C-type lectin (PdC-Lectin) was chosen from stony coral Pocillopora damicornis to understand its recognition characteristics to zooxanthellae. PdC-Lectin protein contained a signal peptide and a carbohydrate-recognition domain with EPN motif in Ca2+ -binding site 2. The PdC-Lectin recombinant protein was expressed and purified in vitro...
May 15, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29775738/humoral-and-mucosal-immune-responses-in-meagre-argyrosomus-regius-juveniles-fed-diets-with-varying-inclusion-levels-of-carob-seed-germ-meal
#10
Francisco Antonio Guardiola, Carolina Barroso, Paula Enes, Ana Couto, Patricia Díaz-Rosales, António Afonso, Erika Kanashiro, Helena Peres, Elisabete Matos, Aires Oliva-Teles, Pedro Pousão-Ferreira, Benjamín Costas
Many studies have assessed the effects of incorporation of plant feedstuffs in fish diets on growth performance, whereas few studies have addressed the effects of fish meal replacement by plant protein sources on fish immune parameters. Thus, the aim of this study was to evaluate the effects on immune response of different inclusion levels of carob seed germ meal (CSGM) as partial replacement for fish meal in diets for meagre (Argyrosomus regius) juveniles. Fish were fed four experimental diets with increased CSGM inclusion levels [0% (control), 7...
May 15, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29772374/evolution-expression-and-characterisation-of-liver-expressed-antimicrobial-peptide-genes-in-ancient-chondrostean-sturgeons
#11
Shuhuan Zhang, Qiaoqing Xu, Hao Du, Zhitao Qi, Youshen Li, Jun Huang, Jun Di, Qiwei Wei
Liver-expressed antimicrobial peptide 2 (leap-2) is an evolutionarily ancient molecule that acts as the key component in vertebrate innate immunity against invading pathogens. Leap-2 has been identified and characterised in several teleosts, but not yet in chondrosteans. Herein, the complete coding sequences of leap-2b and leap-2c were identified from expressed sequence tags (ESTs) isolated from Dabry's sturgeon (Acipenser dabryanus) and Chinese sturgeon (A. sinensis), designated as adleap-2b, adleap-2c, asleap-2b, and asleap-2c, respectively...
May 14, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29772373/a-novel-c-type-lectin-from-the-sea-cucumber-apostichopus-japonicus-ajctl-2-with-preferential-binding-of-d-galactose
#12
Hui Wang, Zhuang Xue, Zhaoqun Liu, Weilin Wang, Feifei Wang, Ying Wang, Lingling Wang, Linsheng Song
C-type lectins (CTLs) are Ca2+ dependent carbohydrate-binding proteins that share structural homology in their carbohydrate-recognition domains (CRDs). In the present study, a novel CTL was identified from sea cucumber Apostichopus japonicus (named as AjCTL-2). The deduced amino acid sequence of AjCTL-2 was homologous to CTLs from other animals with the identities ranging from 33% to 40%. It contained a canonical signal peptide at the N-terminus, a low density lipoprotein receptor class A (LDLa), a C1r/C1s/Uegf/bone morphogenetic protein 1 (CUB), and a CRD with two motif Glu-Pro-Asn (EPN) and Trp-Asn-Asp (WND) in Ca2+ binding site 2...
May 14, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29772372/palmitate-induces-nitric-oxide-production-and-inflammatory-cytokine-expression-in-zebrafish
#13
Seon-Heui Cha, Yongha Hwang, Kil-Nam Kim, Hee-Sook Jun
Inflammation markers in zebrafish embryos reflect a toxic response that is common to other animal models and humans. Free fatty acids (FFAs) are known to cause damage in various tissues by inducing inflammation. In this study, we investigated whether a FFA (palmitate) induces inflammation in zebrafish embryos. Nitrous oxide (NO) production and cyclooxygenase-2 (COX-2) mRNA expression were increased in palmitate-treated zebrafish embryos in a dose-dependent manner. mRNA expression of pro-inflammatory cytokines, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF- α), were also increased...
May 14, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29763734/antioxidant-enzymes-hematology-and-histology-of-spleen-in-nile-tilapia-fed-supplemented-diet-with-natural-extracts-challenged-with-aeromonas-hydrophila
#14
Geovana Dotta, Jaqueline Inês Alves de Andrade, Patrícia Garcia, Gabriel Fernandes Alves Jesus, José Luiz Pedreira Mouriño, Jacó Joaquim Mattos, Afonso Celso Dias Bainy, Maurício Laterça Martins
This study investigated the effects of dietary supplementation with the extrats of propolis and Aloe barbadensis (aloe) on the antioxydant enzime activity, hematology and histology of the spleen of Nile tilapia challenged with Aeromonas hydrophila. Seventy two juvenile Nile tilapia were divided in four treatments and three replicates and fed extract mixture for 15 days: fish fed supplemented diet with 1% of the mixture of extracts of propolis and aloe (1:1) injected with phosphate-buffered saline (PBS); fish fed suplemented diet with 1% of the mixture of extracts of propolis and aloe (1:1) injected with the A...
May 12, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29763733/in-depth-profiling-of-mirna-regulation-in-the-body-wall-of-sea-cucumber-apostichopus-japonicus-during-skin-ulceration-syndrome-progression
#15
Hongjuan Sun, Zunchun Zhou, Ying Dong, Aifu Yang, Yongjia Pan, Jingwei Jiang, Zhong Chen, Xiaoyan Guan, Bai Wang, Shan Gao, Bei Jiang
MicroRNAs (miRNAs) are small non-coding RNAs that mediate mRNA degradation or translation repression. Previous study showed that the expression of miRNAs was significantly changed in the body wall of sea cucumber Apostichopus japonicus after skin ulceration syndrome (SUS) infection, which is a dynamic process. However, the critical miRNAs from body wall that involved in different infection stages of SUS remain unknown. In this study, four cDNA libraries were constructed with the body wall from healthy and three SUS-infected stages of A...
May 12, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29753689/molecular-characterization-and-gene-expression-analysis-of-hypoxia-inducible-factor-and-its-inhibitory-factors-in-kuruma-shrimp-marsupenaeus-japonicus
#16
Yo Okamura, Tohru Mekata, Gehad Elsaid Elshopakey, Toshiaki Itami
In shrimp aquaculture, overcrowded farming causes fluctuations in dissolved oxygen concentrations. Low-oxygen conditions (hypoxia) affect shrimp growth. Hypoxia-inducible factor (HIF) is a transcriptional factor in the basic helix-loop-helix/PAS family and is activated in response to hypoxic stress. However, little is known about HIF and other inhibitors of the HIF pathway in crustaceans. In this study, we cloned MjHIF-1α, an inhibitory factor, MjFIH-1 (factor inhibiting HIF-1α), and MjVHL (Von Hippel-Lindau tumor suppressor) from kuruma shrimp (Marsupenaeus japonicus)...
May 10, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29753144/isolation-of-an-invertebrate-type-lysozyme-from-the-nephridia-of-the-echiura-urechis-unicinctus-and-its-recombinant-production-and-activities
#17
Hye Young Oh, Chan-Hee Kim, Hye-Jin Go, Nam Gyu Park
Invertebrates, unlike vertebrates which have adaptive immune system, rely heavily on the innate immune system for the defense against pathogenic bacteria. Lysozymes, along with other immune effectors, are regarded as an important group in this defense. An invertebrate-type (i-type) lysozyme, designated Urechis unicinctus invertebrate-type lysozyme, Uu-ilys, has been isolated from nephridia of Urechis unicinctus using a series of high performance liquid chromatography (HPLC), and ultrasensitive radial diffusion assay (URDA) as a bioassay system...
May 9, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29753143/the-function-of-eriocheir-sinensis-transferrin-and-iron-in-spiroplasma-eriocheiris-infection
#18
Xuechuan Xu, Yuhan Liu, Mengyue Tang, Yuye Yan, Wei Gu, Wen Wang, Qingguo Meng
Transferrin, a member of the iron binding superfamily protein, plays an extremely important role in the transport of iron in the biological process of cells. The result of preliminary proteomic study on E. sinensis hemocytes infected Spiroplasma eriocheiris showed the expression of transferrin (EsTF) and ferrin (EsFe) significantly changed. In addition, other reports have confirmed that transferrin, ferritin and iron are involved in the immune response of hosts. In order to validate the immune function of EsTF, the whole length of EsTF was successfully amplified by the gene cloning and RACE technique...
May 9, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29753142/heme-oxygenase-1-inhibits-spring-viremia-of-carp-virus-replication-through-carbon-monoxide-mediated-cyclic-gmp-protein-kinase-g-signaling-pathway
#19
Cong Li, Lijuan Li, Ling Jin, Junfa Yuan
Spring viremia of carp virus (SVCV) is the etiological agent of spring viremia of carp (SVC) and causes mass mortality in common carp (Cyprinus carpio). Currently, no effective treatments or commercial vaccines against SVCV are available. Heme oxygenase-1 (HO-1), an enzyme that catalyzes the degradation of heme to produce carbon monoxide (CO), biliverdin and ferrous iron (Fe2+), exerts anti-oxidant, antiinflammatory and anti-apoptotic properties. Previous studies demonstrated that nuclear factor-erythroid 2 related factor 2 (Nrf2) functions as an important upstream regulator of HO-1 and exhibits robust activity against SVCV infection...
May 9, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29751034/a-novel-jnk-is-involved-in-immune-response-by-regulating-il-expression-in-oyster-crassostrea-gigas
#20
Jiejie Sun, Yinan Li, Meijia Li, Yu Liu, Chen Qu, Lingling Wang, Linsheng Song
The c-Jun N-terminal kinase (JNK) is a member of mitogen-activated protein kinases (MAPK) highly conserved from yeast to mammals and participates in regulating many physiological and pathological processes. In the present study, a novel JNK was identified from oyster Crassostrea gigas (designated as CgJNK) and its biological functions were investigated in response against lipopolysaccharide (LPS) injection. The CgJNK consists of 415 amino acids, which includes a serine/threonine protein kinase (S_TKc) domain with a conserved Thr-Pro-Tyr (TPY) motif...
May 8, 2018: Fish & Shellfish Immunology
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