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Aeromonas hydrophila

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https://www.readbyqxmd.com/read/29146498/synthesis-and-characterization-of-silver-nanoparticles-using-gelidium-amansii-and-its-antimicrobial-property-against-various-pathogenic-bacteria
#1
Arivalagan Pugazhendhi, Desika Prabakar, Jaya Mary Jacob, Indira Karuppusamy, Rijuta Ganesh Saratale
Microfouling is evolving at a fast rate causing augmented mortality rates and damage worldwide. Until now, several remedial measures have been exploited to overcome microfouling, amongst them nanoparticles play a superior role. Currently, green synthesized nanoparticles have been centered owing to its eco-friendly, cost effectively and non-toxic nature which has also increased its industrial applications (biomedicine, food and textile). In the present research Silver Nanoparticles (Ag NPs) synthesized using marine red algae Gelidium amansii...
November 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29146446/hericium-caput-medusae-bull-fr-pers-polysaccharide-enhance-innate-immune-response-immune-related-genes-expression-and-disease-resistance-against-aeromonas-hydrophila-in-grass-carp-ctenopharyngodon-idella
#2
Changlong Gou, Jiazhen Wang, Yuqiong Wang, Wenlong Dong, Xiaofeng Shan, Yujie Lou, Yunhang Gao
The objective was to add 0, 400, 800 or 1200 mg/kg of Hericium caput-medusae polysaccharide (HCMP) to the basal diet of grass carp (Ctenopharyngodon idella) and determine effects on humoral innate immunity, expression of immune-related genes and disease resistance. Adding HCMP enhanced (P < 0.05) bactericidal activity at 1, 2 and 3 weeks and also lysozyme activity, complement C3, and SOD activity at 2 and 3 weeks. Supplementing 800 or 1200 mg/kg of HCMP for 2 or 3 weeks increased (P < 0.05) serum concentrations of total protein, albumin and globulin...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29144014/translocation-of-precision-polymers-through-biological-nanopores
#3
Mordjane Boukhet, Niklas Felix König, Abdelaziz Al Ouahabi, Gerhard Baaken, Jean-François Lutz, Jan C Behrends
Nanopore analysis, which is, currently, chiefly used for DNA sequencing, is also an appealing technique for characterizing abiotic polymers. As a first step toward this goal, nanopore detection of non-natural monodispersed poly(phosphodiester)s as candidate backbone structures is reported herein. Two model homopolymers containing phosphopropyl repeat units (i.e., 56 or 104 r.u.) and a short thymidine nucleotide sequence are analyzed in the present work. They are tested in two different biological nanopores, α-hemolysin from Staphylococcus aureus, and aerolysin from Aeromonas hydrophila...
November 16, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29142761/aeromonas-hydrophila-utilizes-tlr4-topology-for-synchronous-activation-of-myd88-and-trif-to-orchestrate-anti-inflammatory-responses-in-zebrafish
#4
Nidhi Srivastava, Asha Shelly, Manmohan Kumar, Archana Pant, Bhabatosh Das, Tanmay Majumdar, Shibnath Mazumder
Toll-like receptor 4 (TLR4) plays a critical role in host immunity against Gram-negative bacteria. It transduces signals through two distinct TIR-domain-containing adaptors, MyD88 and TRIF, which function at the plasma membrane and endosomes, respectively. Using zebrafish Aeromonas hydrophila infection model, we demonstrate that synchronization of MyD88 and TRIF dependent pathways is critical for determining the fate of infection. Zebrafish were infected with A. hydrophila, and bacterial recovery studies suggested its effective persistence inside the host...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/29135372/first-study-on-interferon-regulatory-factor-in-sturgeon-expression-pattern-of-interferon-regulatory-factor-in-dabry-s-sturgeon-acipenser-dabryanus
#5
Youshen Li, Shuhuan Zhang, Kai Luo, Lihai Xia, Wei Hu, Guangming Tian, Zhitao Qi, Qiaoqing Xu, Qiwei Wei
Interferon regulatory factors (IRFs) are crucial regulators in initiating the host innate immune response against pathogen invasions. Dabry's sturgeon (Acipenser dabryanus) is particularly a valuable fish species found in the Yangtze River, China for which there is scarce immunological data. In the present study, we investigated the expression profile of sturgeon IRF genes. All adIRFs were composed of 8 exons and 7 introns, except adIRF1, which possessed 9 exons interrupted by 8 introns. Moreover, the predicted protein sequence has a DNA-binding domain (DBD) sharing high identity with spotted gar (Lepisosteus oculatus)...
November 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29129586/mannose-binding-lectin-and-its-roles-in-immune-responses-in-grass-carp-ctenopharyngodon-idella-against-aeromonas-hydrophila
#6
Yunfei Dang, Xinzhan Meng, Shentong Wang, Lisen Li, Meng Zhang, Moyan Hu, Xiaoyan Xu, Yubang Shen, Liqun Lv, Rongquan Wang, Jiale Li
The complement system is a crucial component of the innate immune system that links innate and adaptive immunity via four pathways. Mannose-binding lectin (MBL), the initiating molecule of the lectin pathway, plays a significant role in the innate immune system in mammals and fish. Herein, we identified an MBL homolog (gcMBL) in grass carp (Ctenopharyngodon idella). The full-length 948 bp gcMBL cDNA includes a 741 bp open reading frame encoding a 246 amino acid protein with a signal peptide, collagen triple helix repeat domain, and a C-type lectin-like/link domain...
November 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29126413/leaves-from-banana-musa-nana-and-maize-zea-mays-have-no-phyto-prophylactic-effects-on-the-susceptibility-of-grass-carp-ctenopharyngodon-idella-to-aeromonas-hydrophila-infection
#7
Richard Mayrhofer, Simon Menanteau-Ledouble, Johannes Pucher, Ulfert Focken, Mansour El-Matbouli
BACKGROUND: The ubiquitous and opportunistic bacterial pathogen Aeromonas hydrophila has been associated with ulcerative dermatitis in fish, especially under stressful conditions. It can cause severe losses in fresh water aquaculture and is particularly prevalent in tropical and subtropical regions. Fresh leaves from maize and bananas have been used as feed supplement by fish farmers in Vietnam and it has been reported that they may have phyto-prophylactic benefits. In the present study, a feeding trial was conducted to investigate the benefits of providing maize and banana leaves as feed supplement: to determine if they were taken up and digested by grass carp (Ctenopharyngodon idella), if this uptake resulted in improved growth performance, and if leaf supplementation protected fish when challenged with A...
November 10, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29111394/non-mammalian-toll-like-receptor-18-tlr18-recognizes-bacterial-pathogens-in-common-carp-cyprinus-carpio-l-indications-for-a-role-of-participation-in-the-nf-%C3%AE%C2%BAb-signaling-pathway
#8
Shijuan Shan, Dezhi Liu, Rongrong Liu, Yaoyao Zhu, Ting Li, Fumiao Zhang, Liguo An, Guiwen Yang, Hua Li
Toll-like receptors are important pattern recognition receptors that can recognize pathogen-associated molecular patterns (PAMPs) and play a critical role in innate immunity. In the present study, tlr18 was identified from common carp (Cyprinus carpio L.) (named Cctlr18). The deduced amino acid sequence contained only a signal peptide, eight LRR (leucine-rich repeat) motifs, a transmembrane region and a TIR (Toll/IL-1 receptor) domain. Phylogenetic analysis showed that CcTlr18 was most closely related to Ctenopharyngodon idella Tlr18...
October 27, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29107742/polyvalent-protective-immunogens-identified-from-outer-membrane-proteins-of-vibrio-parahaemolyticus-and-their-induced-innate-immune-response
#9
Bo Peng, Xiao-Peng Lin, Sheng-Nan Wang, Man-Jun Yang, Xuan-Xian Peng, Hui Li
Vaccines are the most economic, efficient and environment-friendly agents in protecting host against bacterial infection. In aquaculture, polyvalent vaccines targeting more than one bacterial specie are highly demanded due to the presence of various types of bacterial pathogens in farming environment. Here eighteen genes encoding outer membrane proteins of Vibrio parahaemolyticus were cloned and expressed. The expressed recombinant proteins were used for antiserum preparation. Passive and active immune protection of the antiserum and recombinant proteins was investigated in the zebrafish model...
October 28, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29102106/magnolol-protects-channel-catfish-from-aeromonas-hydrophila-infection-via-inhibiting-the-expression-of-aerolysin
#10
Jing Dong, Hao Ding, Yongtao Liu, Qiuhong Yang, Ning Xu, Yibin Yang, Xiaohui Ai
Aeromonas hydrophila is a common zoonotic pathogen which can cause several infections both in human and animals, particular aquatic animals. Antibiotics have been widely used in the treatment of A. hydrophila infections, however, the development of resistance has limited the treatment for these infections. There is an urgent need for novel agents and strategies against these infections. Aerolysin, a pore-forming toxin secreted by most pathogenic A. hydrophila, is known to contribute to the pathogenesis of A...
November 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29065225/structural-investigation-by-tandem-mass-spectrometry-analysis-of-a-heterogeneous-mixture-of-lipid-an-isolated-from-the-lipopolysaccharide-of-aeromonas-hydrophila-sj-55ra
#11
Mervt Almostafa, Travis D Fridgen, Joseph Banoub
RATIONALE: We report herein the electrospray ionization mass spectrometry (ESI-MS, negative ion mode) and low-energy collision induced dissociation tandem mass spectrometry (CID-MS/MS) analysis of a mixture of lipid An isolated from the lipopolysaccharide (LPS) of a rough-resistant wild strain of Gram-negative bacteria Aeromonas hydrophila grown in presence of phages (SJ-55Ra). This investigation indicates that the presence of a mixture of lipid A acylated disaccharides, which molecular structures were not relatively conserved, resulted from the incomplete LPS biosynthesis caused by the phage treatment...
October 24, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29054663/characterization-of-bacterial-diversity-in-contaminated-groundwater-using-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#12
Misty S Martin, Inês C Santos, Doug D Carlton, Paula Stigler-Granados, Zacariah L Hildenbrand, Kevin A Schug
Groundwater is a major source for drinking water in the United States, and therefore, its quality and quantity is of extreme importance. One major concern that has emerged is the possible contamination of groundwater due to the unconventional oil and gas extraction activities. As such, the impacts of exogenous contaminants on microbial ecology is an area to be explored to understand what are the chemical and physical conditions that allow the proliferation of pathogenic bacteria and to find alternatives for water treatment by identifying organic-degrading bacteria...
October 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29046693/antibacterial-activity-of-essential-oil-from-lavender-lavandula-angustifolia-against-pet-turtle-borne-pathogenic-bacteria
#13
Sabrina Hossain, Honghoi Heo, B C J De Silva, S H M P Wimalasena, H N K S Pathirana, Gang-Joon Heo
Pet turtles are well-known to harbor an array of bacterial pathogens which can cause zoonotic infections in humans as well as opportunistic infections in the turtles itself. Essential oils are the natural plant extracts which have been traditionally used for disease treatment. In the present study, the essential oil of lavender (EOL) was examined for its antibacterial activity against thirty-eight strains of turtle-borne pathogenic bacteria belonging to seven species; Aeromonas hydrophila, A. caviae, A. dhakensis, Citrobacter freundii, Proteus mirabilis, Salmonella enterica and Pseudomonas aeruginosa...
September 2017: Laboratory Animal Research
https://www.readbyqxmd.com/read/29042450/zinc-finger-protein-365-is-a-new-maternal-lps-binding-protein-that-defends-zebrafish-embryos-against-gram-negative-bacterial-infections
#14
Xiaoyuan Du, Yang Zhou, Lili Song, Xia Wang, Shicui Zhang
Zinc finger protein 365 (ZNF365) is widespread in animals, but its function and mechanism remains poorly defined. Here we clearly demonstrate that zebrafish ZNF365 is a newly identified LPS-binding protein capable of interacting with the gram-negative bacteria Escherichia coli, Vibrio anguillarum, and Aeromonas hydrophila, and functions as an antibacterial effector molecule capable of directly killing the bacteria. We also reveal that N-terminal residues 30-55 consisting of the ZnF_C2H2 domain are indispensable for ZNF365 antimicrobial activity...
October 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29038557/anti-infective-effect-of-adhesive-probiotic-lactobacillus-in-fish-is-correlated-with-their-spatial-distribution-in-the-intestinal-tissue
#15
Suxu He, Chao Ran, Chubin Qin, Shuning Li, Hongling Zhang, Willem M de Vos, Einar Ringø, Zhigang Zhou
In this study, we tested the distribution of 49 Lactobacillus strains in the mucus and mucosa of the intestine tissue of zebrafish. We observed a progressive change in the spatial distribution of Lactobacillus strains, and suggested a division of the strains into three classes: mucus type (>70% in mucus), mucosa type (>70% in mucosa) and hybrid type (others). The hybrid type strains were more efficient in protection of zebrafish against Aeromonas hydrophila infection. Three strains representing different distribution types (JCM1149, CGMCC1...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29035671/selection-of-electrogenic-bacteria-for-microbial-fuel-cell-in-removing-victoria-blue-r-from-wastewater
#16
Chih-Yu Chen, Teh-Hua Tsai, Pei-Ssu Wu, Shuo-En Tsao, Yu-Shan Huang, Ying-Chien Chung
This study was conducted to select electrogenic bacteria from wastewater sludge. Phylogenetic analysis revealed that Proteobacteria was the dominant phylum in the microbial fuel cell (MFC) during the decomposition process of organic pollutants. Five culturable bacteria strains - namely, Bacillus subtilis, Flavobacterium sp., Aeromonas hydrophila, Citrobacter freundii, and Stenotrophomonas sp. - have a double potential in dye removal and electricity generation. We inoculated the mixed electrogenic bacteria at a specific ratio and treated them with a triphenylmethane dye, Victoria blue R (VBR), to evaluate their electricity generation ability for the artificial and real wastewater...
October 16, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29033439/a-case-of-trauma-wound-related-infection-caused-by-enterobacter-cancerogenus-and-aeromonas-hydrophilia
#17
Yoshiro Hadano, Keiichi Tamagawa, Kiyofumi Ohkusu
We herein describe a case of trauma-related wound infection with a subcutaneous abscess caused by both Enterobacter cancerogenus and Aeromonas hydrophila. An 89-year-old Japanese man was admitted to our hospital because of an injury that he had suffered in a car accident. The right dorsal region of the foot around the wound was reddish and swelling. The pus culture on his right foot grew E. cancerogenus and A. hydrophila. The patient was successfully treated with a 10-day course of meropenem and a 25-day course of levofloxacin...
October 16, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29017939/identification-of-a-novel-toll-gene-shtoll3-from-the-freshwater-crab-sinopotamon-henanense-and-its-expression-pattern-changes-in-response-to-cadmium-followed-by-aeromonas-hydrophila-infection
#18
Lang Lang, Zuobing Zhang, Weixin Jing, Jiang-Shiou Hwang, Shao-Chin Lee, Lan Wang
Toll signaling is essential for expression of immune genes which are important for defense against bacterial, fungal and viral infections in invertebrates. Although several toll genes have been identified in the crustaceans, none of them has been investigated in freshwater crab Sinopotamon henanense. Moreover, the effect of cadmium (Cd) on toll gene expression has never been examined on the freshwater crabs which live in the sediments and are prone to heavy metal bioaccumulation. Our transcriptomic analysis of hepatopancreas tissue reveals that toll3 gene expression has been decreased when treated with Cd...
October 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28992444/molecular-cloning-characterization-and-expression-analysis-of-cathepsin-a-in-the-chinese-giant-salamander-andrias-davidianus
#19
Qihuan Zhang, Panpan Han, Bei Huang, Zisheng Wang, Guo Qiao, Puze Wang, Zhitao Qi
Cathepsin A (CTSA) is serine carboxypeptidase, an important protease in the lysosome. In this study, the full complementary DNA (cDNA) sequence of CTSA in Chinese giant salamanders Andrias davidianus was cloned, and its sequence features were analyzed. Tissue expression patterns of CTSA in healthy and Aeromonas hydrophila-infected salamanders were also investigated. The full cDNA sequence of salamander CTSA was 1,620 base pairs in length, encoding 472 amino acids. Salamander CTSA shared high sequence identities with other vertebrates' CTSAs, ranging from 62...
December 2017: Journal of Aquatic Animal Health
https://www.readbyqxmd.com/read/28987482/a-single-domain-rhodanese-homologue-mnrdh1-helps-to-maintain-redox-balance-in-macrobrachium-nipponense
#20
Ting Tang, Xiang Li, Xin Liu, Yili Wang, Congcong Ji, Yu Wang, Xiaochun Wang, Song Xie, Fengsong Liu, Jianhui Wang
Rhodaneses are known to catalyze in vitro the transfer of a sulfane sulfur atom from thiosulfate to cyanide with concomitant formation of thiocyanate, however, their biological functions remain speculative despite the main role is considered as detoxifying cyanide especially in animal livers. In this study, we characterized a single-domain rhodanese homologue, MnRDH1, from Macrobrachium nipponense. We found MnRDH1 with the highest expression in hemocytes. Upon Aeromonas hydrophila challenge, expression of MnRDH1 was up-regulated in various tissues, including hepatopancreas, gill, intestine and hemocytes...
October 4, 2017: Developmental and Comparative Immunology
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