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Aeromonas hydrophila

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https://www.readbyqxmd.com/read/28647817/molecular-characterization-of-the-cd79a-and-cd79b-and-its-role-against-aeromonas-hydrophila-infection-in-chinese-sucker-myxocyprinus-asiaticus
#1
Huan Li, Yujin Li, Xiaoping Zhang, Yafeng Wang, Wufeng Zhang, Xia Wu, Zhijian Wang
CD79a and CD79b heterodimers are the important signaling components of B cell receptor (BCR) complex which plays a crucial role in B cell development and antibody production. In the present study, CD79a and CD79b homologues from Chinese sucker (Myxocyprinus asiaticus), namely MaCD79a and MaCD79b, were identified and their expression at early developmental stages and under constitutive and stimulated conditions were investigated. The cDNA sequences for MaCD79a and MaCD79b contained open reading frame of 678 and 636 bp in length for 225 and 211 amino acid residues, respectively...
June 25, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28647779/transcriptome-profiling-and-digital-gene-expression-analysis-of-the-skin-of-dybowski-s-frog-rana-dybowskii-exposed-to-aeromonas-hydrophila
#2
Yi-Gang Xu, Long-Hui Chai, Wen Shi, Dan-Dan Wang, Jing-Yu Zhang, Xiang-Hong Xiao
Recently, populations of Rana dybowskii, an important amphibian species in Northeast China, have decreased, mainly owing to the disease caused by Aeromonas hydrophila. However, effective control methods have not yet been developed. In order to explore the immune responses of R. dybowskii upon exposure to A. hydrophila infection, Illumina high-throughput transcriptome sequencing and digital gene expression (DGE) technology were employed to investigate transcriptomic changes in the skin of R. dybowskii exposed to A...
June 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28630014/impact-of-molecular-hydrogen-treatments-on-the-innate-immune-activity-and-survival-of-zebrafish-danio-rerio-challenged-with-aeromonas-hydrophila
#3
Zhenyu Hu, Bingqian Wu, Fanhong Meng, Zejian Zhou, Hui Lu, Heng Zhao
Recently, molecular hydrogen has been reported to have a suppressive effect on inflammation in human and rodent models. The aim of this study was to evaluate the preventive effects of hydrogen-rich water (HRW) on zebrafish challenged by A. hydrophila. We have found an increased survival rate of bacteria-challenged zebrafish subjected to the HRW immersion treatment. Furthermore, we have revealed that HRW was able to block multiplication of A. hydrophila in zebrafish. In addition, treatment of zebrafish infected by A...
June 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28625872/decreased-enteritis-resistance-ability-by-dietary-low-or-excess-levels-of-lipids-through-impairing-the-intestinal-physical-and-immune-barriers-function-of-young-grass-carp-ctenopharyngodon-idella
#4
Lin Feng, Pei-Jun Ni, Wei-Dan Jiang, Pei Wu, Yang Liu, Jun Jiang, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Xu Tang, He-Qun Shi, Xiao-Qiu Zhou
The current study explores the hypothesis that low or excess levels of lipids decrease the enteritis resistance ability through impairing the intestinal physical and immune barrier function of young grass carp (Ctenopharyngodon idella). A total of 540 young grass carp with an average initial weight of 261.41 ± 0.53 g were fed diets containing six graded levels of lipids at 5.9, 21.4, 36.0, 50.2, 66.6 and 80.1 g/kg for 8 weeks. After that, a challenge trial was conducted by injection of Aeromonas hydrophila over 2 weeks...
June 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28623029/efficacy-of-plga-microparticle-encapsulated-formalin-killed-aeromonas-hydrophila-cells-as-a-single-shot-vaccine-against-a-hydrophila-infection
#5
Saekil Yun, Jin Woo Jun, Sib Sankar Giri, Hyoun Joong Kim, Cheng Chi, Sang Geun Kim, Sang Wha Kim, Se Chang Park
Control and prevention of disease is a high priority in aquaculture, and vaccination is important to prevent outbreaks. Here, poly(d,l-lactide-co-glycolic acid) (PLGA) microparticles (MPs) approximately 36μm in diameter were used to encapsulate and deliver Aeromonas hydrophila formalin-killed cells (FKC) as an antigen, and the innate and adaptive immune responses of cyprinid loaches and common carp were assessed following vaccination. The antigen was confirmed to be well encapsulated by scanning electron microscopy analysis of PLGA MP sections...
June 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28619791/draft-genome-sequence-of-aeromonas-hydrophila-strain-bsk-10-serotype-o97-isolated-from-carassius-carassius-with-motile-aeromonad-septicemia-in-china
#6
Xiaoyi Pan, Lingyun Lin, Yang Xu, Xuemei Yuan, Jiayun Yao, Wenlin Yin, Guijie Hao, Jinyu Shen
We report here a draft genome sequence of Aeromonas hydrophila strain BSK-10, belonging to serotype O97, isolated from crucian carp (Carassius carassius) with motile aeromonad septicemia in Zhejiang, China. The assembly resulted in 34 scaffolds totaling approximately 4.97 Mb, with an average G+C content of 60.97% and 4,594 predicted coding genes.
June 15, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28615835/haematological-changes-in-south-indian-fresh-water-murrel-channa-punctatus-have-both-eus-and-a-hydrophila-infection
#7
Koteshwar Rao Podeti, G Benarjee
The mixed infection in fishes is a common feature and in this Pathogens like Bacteria, Fungi and Protozoan's are found together to cause ill health to the fishes known as Epizootic Ulcerative Syndrome (EUS). In this syndrome the low temperature and aquatic pollution aggravates the infection in fishes. In the present study the fresh water edible fish, Channa punctatus (Murrel) was found infected with the bacteria namely, Aeromonas hydrophila, Staphylococcus aureus, Pseudomonas aeruginosa and Salmonella salmonicida...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28610850/dietary-myo-inositol-deficiency-decreased-the-growth-performances-and-impaired-intestinal-physical-barrier-function-partly-relating-to-nrf2-jnk-e2f4-and-mlck-signaling-in-young-grass-carp-ctenopharyngodon-idella
#8
Shuang-An Li, Wei-Dan Jiang, Lin Feng, Yang Liu, Pei Wu, Jun Jiang, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Xiao-Qiu Zhou
In this study, we investigated the effects of dietary myo-inositol on the growth and intestinal physical barrier functions of young grass carp (Ctenopharyngodon idella). A total of 540 young grass carp (221.83 ± 0.84 g) were fed six diets containing graded levels of myo-inositol (27.0, 137.9, 286.8, 438.6, 587.7 and 737.3 mg/kg) for 10 weeks. After the growth trial, fish were challenged with Aeromonas hydrophila for 14 days. The results indicated that compared with optimal myo-inositol levels, myo-inositol deficiency (27...
June 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28606861/the-molecular-characterizations-of-cu-znsod-and-mnsod-and-its-responses-of-mrna-expression-and-enzyme-activity-to-aeromonas-hydrophila-or-lipopolysaccharide-challenge-in-qihe-crucian-carp-carassius-auratus
#9
Xianghui Kong, Dan Qiao, Xianliang Zhao, Li Wang, Jie Zhang, Dandan Liu, Hongxu Zhang
Superoxide dismutases (SODs), as the prime antioxidant enzymes, present the first line of defense against oxidative stress caused by excessive reactive oxygen species (ROS) in organism. In the study, two distinct members of SOD family were cloned and analyzed in Qihe crucian carp Carassius auratus (designated as CaCu/ZnSOD and CaMnSOD, respectively). The full-length cDNA of CaCu/ZnSOD is 759 bp, containing a 5' -untranslated region (UTR) of 39 bp, a ORF (including stop codon, TAG) of 465 bp and a 3'-UTR of 255 bp...
June 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28606860/effects-of-partial-replacement-of-fish-meal-by-yeast-hydrolysate-on-complement-system-and-stress-resistance-in-juvenile-jian-carp-cyprinus-carpio-var-jian
#10
Xiang-Yang Yuan, Wen-Bin Liu, Chao Liang, Cun-Xin Sun, Yun-Fei Xue, Zu-De Wan, Guang-Zhen Jiang
A 10-week feeding trial was carried out to investigate the effects of dietary fish meal replacement by yeast hydrolysate (YH) on growth performance, complement system and stress resistance of juvenile Jian carp (Cyprinus carpio var. Jian) (initial average weight 19.44 ± 0.06 g). In the study, there were five groups: one control group was fed with a basal diet (YH0), and four treatment groups were fed with dietary fish meal replaced by 1% YH (YH1), 3% (YH3), 5% (YH5) and 7% (YH7), respectively. Each group had four replicates...
June 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28602737/identification-and-characterization-of-a-mannose-binding-lectin-from-nile-tilapia-oreochromis-niloticus
#11
Liangliang Mu, Xiaoxue Yin, Jing Liu, Liting Wu, Xia Bian, Yuhong Wang, Jianmin Ye
Mannose-binding lectin (MBL) is a pattern recognition protein that plays an important role in innate immunity capable of activating the lectin pathway of the complement system. In this study, a MBL homologue (OnMBL) was identified from Nile tilapia (Oreochromis niloticus) and characterized at expression and agglutination functional levels. The open reading frame of OnMBL is 687 bp of nucleotide sequence encoding polypeptides of 228 amino acids. The deduced amino acid sequence is highly homology to teleost and similar to mammalian MBL, containing a canonical collagen-like region, a carbohydrate recognition domain and a neck region...
June 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28602683/a-c-type-lectin-nattectin-like-protein-cantc-in-qihe-crucian-carp-carassius-auratus-binding-ability-with-lps-pgn-and-various-bacteria-and-agglutinating-activity-against-bacteria
#12
Li Wang, Jie Zhang, Xianghui Kong, Xianliang Zhao, Chao Pei, Li Li
C-type lectins (CTLs), as the members of pattern-recognition receptors (PRRs), play the significant roles in innate immunity through binding with pathogen-associated molecular patterns (PAMPs) on the surface of microbe. In the present study, a novel CTL, Nattectin-like protein (named as CaNTC), was investigated in Qihe crucian carp Carassius auratus. The full-length cDNA of CaNTC was composed of 776 bp, with a 152 bp 5'-untranslated region (UTR), a 492 bp ORF encoding a 163-aa protein, and a 132 bp 3'-UTR with a polyadenylation signal sequence AATAAA and a poly(A) tail...
June 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28602677/immune-responses-to-methanolic-extract-of-black-cumin-nigella-sativa-in-rainbow-trout-oncorhynchus-mykiss
#13
Yasemin Celik Altunoglu, Soner Bilen, Ferhat Ulu, Gouranga Biswas
The immune stimulating effects of the methanolic extract of black cumin (Nigella sativa) in rainbow trout (Oncorhynchus mykiss) was evaluated. Variable concentrations of black cumin methanolic extract [0 (Control), 0.1 and 0.5 g kg(-1) of feed] were individually added to the basal diet and rainbow trout was fed for 30 days to assess the innate immune responses and growth performance. Feed conversion ratio significantly decreased in the group fed with 0.5 g kg(-1) black cumin extract. Respiratory burst activity was observed to be the highest in the 0...
June 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28600196/a-truncated-sph12-38-with-potent-antimicrobial-activity-showing-resistance-against-bacterial-challenge-in-oryzias-melastigma
#14
Xiao-Wan Ma, Lin Hou, Bei Chen, Dan-Qing Fan, Yan-Chao Chen, Ying Yang, Ke-Jian Wang
Antimicrobial peptides (AMPs) represent an efficient part of innate immunity and are found in a variety of life. Among them Histone 2A (H2A), as a promising class of AMPs, attracts great attention, but the in vivo mechanism of H2A derived AMP is still less known. Based on the acquisition of Sphistin, a synthetic 38-amino acid H2A derived peptide from Scylla paramamosain, as reported in our previous study, was truncated into three short fragments (Sph12-38, Sph20-38 and Sph30-38) and further investigated for its possible functional domains...
June 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28596762/species-distribution-and-prevalence-of-putative-virulence-factors-in-mesophilic-aeromonas-spp-isolated-from-fresh-retail-sushi
#15
Sunniva Hoel, Olav Vadstein, Anita N Jakobsen
Aeromonas spp. are ubiquitous bacteria that have received increasing attention as human pathogens because of their widespread occurrence in food, especially seafood and vegetables. The aim of this work was to assess the species identity and phylogenetic relationship of 118 Aeromonas strains isolated from fresh retail sushi from three producers, and to characterize the isolates with respect to genetic and phenotypic virulence factors. We also evaluate the potential hazard associated with their presence in ready-to-eat seafood not subjected to heat treatment...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28559111/pattern-recognition-receptors-in-grass-carp-ctenopharyngodon-idella-i-organization-and-expression-analysis-of-tlrs-and-rlrs
#16
Zhiwei Liao, Quanyuan Wan, Hang Su, Changsong Wu, Jianguo Su
Pattern recognition receptors (PRRs) play indispensable roles in the immune responses against invading pathogens. In the present study, we systematically identified and characterized Toll-like receptors (TLRs), retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs) as well as their adaptors in grass carp (Ctenopharyngodon idella). A comprehensive analysis of BLAST and other bioinformatics methods showed that C. idella TLR family consist of 21 members and their adaptors contain four members. Phylogenetic analyses confirmed the existence of six TLR subfamilies (TLR1, 3, 4, 5, 7 and 11 subfamily) in C...
May 27, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28549941/dietary-zinc-deficiency-reduced-growth-performance-intestinal-immune-and-physical-barrier-functions-related-to-nf-%C3%AE%C2%BAb-tor-nrf2-jnk-and-mlck-signaling-pathway-of-young-grass-carp-ctenopharyngodon-idella
#17
Zheng-Xing Song, Wei-Dan Jiang, Yang Liu, Pei Wu, Jun Jiang, Xiao-Qiu Zhou, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Lin Feng
Our study investigated the effects of dietary zinc (Zn) deficiency on growth performance, intestinal immune and physical barrier functions of young grass carp (Ctenopharyngodon idella). A total of 630 grass carp (244.14 ± 0.40 g) were fed graded levels of zinc lactate (10.71, 30.21, 49.84, 72.31, 92.56, 110.78 mg Zn/kg diet) and one zinc sulfate group (56.9 mg Zn/kg diet) for 60 days. At the end of the feeding trial, fish were challenged with Aeromonas hydrophila for 14 days. These results indicated that compared with optimal dietary Zn level, dietary Zn deficiency (10...
May 23, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28546114/melaleuca-alternifolia-essential-oil-prevents-alterations-to-purinergic-enzymes-and-ameliorates-the-innate-immune-response-in-silver-catfish-infected-with-aeromonas-hydrophila
#18
Matheus D Baldissera, Carine F Souza, Pedro H Doleski, Agueda C de Vargas, Marta M M F Duarte, Thiago Duarte, Aline A Boligon, Daniela B R Leal, Bernardo Baldisserotto
Aeromonas hydrophila infection represents a major impediment to the development of aquaculture, leading to important economic losses. Over the last few years, different methods have been used to counteract and minimize the negative effects of this infection, such as the use of Melaleuca alternifolia essential oil, popularly known as tea tree oil (TTO), that possess a bactericide action against A. hydrophila. The purinergic system develops an important role in the inflammatory response, principally due to involvement of adenosine triphosphate (ATP) in the inflammatory process, as well as by the anti-inflammatory properties of adenosine (Ado), a molecule that is controlled by NTPDase, 5'-nucleotidase and adenosine deaminase (ADA) enzymes...
May 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28546021/sodium-butyrate-improved-intestinal-immune-function-associated-with-nf-%C3%AE%C2%BAb-and-p38mapk-signalling-pathways-in-young-grass-carp-ctenopharyngodon-idella
#19
Li Tian, Xiao-Qiu Zhou, Wei-Dan Jiang, Yang Liu, Pei Wu, Jun Jiang, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Fei Xie, Lin Feng
The present study evaluated the effect of dietary sodium butyrate (SB) supplementation on the growth and immune function in the proximal intestine (PI), middle intestine (MI) and distal intestine (DI) of young grass carp (Ctenopharyngodon idella). The fish were fed one powdery sodium butyrate (PSB) diet (1000.0 mg kg(-1) diet) and five graded levels of microencapsulated sodium butyrate (MSB) diets: 0.0 (control), 500.0, 1000.0, 1500.0 and 2000.0 mg kg(-1) diet for 60 days. Subsequently, a challenge test was conducted by injection of Aeromonas hydrophila...
May 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28546018/molecular-characterization-and-expression-analysis-of-three-tlr-genes-in-yellow-catfish-pelteobagrus-fulvidraco-responses-to-stimulation-of-aeromonas-hydrophila-and-tlr-ligands
#20
Kai-Lun Wang, Wei Ji, Gui-Rong Zhang, Kai-Jian Wei, Ze-Chao Shi, Xiao-Ting Zhang, Huan Zheng, Qi-Xue Fan
Toll-like receptors (TLRs) are one of the most extensively researched pattern recognition receptors (PRRs) and play an important role in the innate immune system. In this study, partial cDNA sequences of the Pf_TLR18 and Pf_TLR19 genes and complete cDNA sequence of the Pf_TLR21 gene were cloned from yellow catfish (Pelteobagrus fulvidraco). The open reading frames (ORFs) of the Pf_TLR18, Pf_TLR19 and Pf_TLR21 genes were 1956 bp, 2262 bp and 2949 bp in length, encoding 651, 753 and 982 amino acids, respectively...
May 22, 2017: Fish & Shellfish Immunology
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