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activation of immunity, immune response, antioxidant ability, and resistance against vibrio alginolyticus in white shrimp litopenaeus vannamei decrease under long-term culture at low ph.the growth, activation of immunity, immune parameters, and transcript levels of cytmnsod, mtmnsod, eccuznsod, glutathione peroxidase (gpx), catalase, lysozyme, and penaeidin 3a were examined in white shrimp litopenaeus vannamei reared at ph 6.8 and 8.1 after 24 weeks. no significant difference in growth was observed between the two groups. an in vitro study indicated that phenoloxidase activity and respiratory bursts (rb, release of the superoxide anion) were significantly higher in the haemocyt ...201526093205
prevalence of vibrio spp. in raw shrimps (parapenaeus longirostris) and performance of a chromogenic medium for the isolation of vibrio strains.vibrios are natural inhabitants of estuarine ecosystems and some species may pose public health problem as agents of sporadic or collective food-borne infections associated with the consumption of fish or shellfish. samples of raw shrimp (n = 299), fished in coastal areas of the city of agadir, morocco, and collected from its fish marketplace, were examined for the presence of pathogenic vibrios. microbiological analysis was carried out according to a protocol using thiosulphate citrate bile suc ...201526081523
molecular characterization of an il-1β gene from the large yellow croaker (larimichthys crocea) and its effect on fish defense against vibrio alginolyticus infection.interleukin 1β (il-1β), the first interleukin to be characterized, plays a key role in regulating the immune response. in this study, we determined the cdna and genomic dna sequences of the il-1β gene from the large yellow croaker, larimichthys crocea. phylogenetic analysis indicated that the il-1β (lcil-1β) gene was most closely related to that of european seabass (dicentrarchus labrax), sharing 67.8% amino acid identity. in healthy large yellow croaker, lcil-1β transcription was detected in al ...201526018856
deep-sea hydrothermal vent bacteria related to human pathogenic vibrio species.vibrio species are both ubiquitous and abundant in marine coastal waters, estuaries, ocean sediment, and aquaculture settings worldwide. we report here the isolation, characterization, and genome sequence of a novel vibrio species, vibrio antiquarius, isolated from a mesophilic bacterial community associated with hydrothermal vents located along the east pacific rise, near the southwest coast of mexico. genomic and phenotypic analysis revealed v. antiquarius is closely related to pathogenic vibr ...201525964331
characterization and expression analysis of calmodulin (cam) in orange-spotted grouper (epinephelus coioides) in response to vibrio alginolyticus challenge.vibrio alginolyticus containing the highly toxic extracellular product is one of the most serious threats to grouper survival and its minimum lethal dose is approximately 500 cfu/g fish body weight in grouper. to study the toxic effects of v. alginolyticus on the immune system in teleost, calmodulin (cam), an important molecular indicator gene, was cloned from the orange-spotted grouper (epinephelus coioides). the full-length ec-cam consisted of a 5'-utr of 103 bp, an orf of 450 bp and a 3'-utr ...201525956977
calmodulin of the tropical sea cucumber: gene structure, inducible expression and contribution to nitric oxide production and pathogen clearance during immune response.calmodulin (cam) is an essential second messenger protein that transduces calcium signals by binding calcium ions (ca(2+)) and modulating its interactions with various target proteins. in contrast to vertebrates, where cam is well established as a cofactor for ca(2+)-dependent physiological and cellular functions including host defense, there is a paucity of understanding on cam in invertebrates (such as echinoderms) in response to immune challenge or microbial infections. in this study, we obta ...201525913576
the sea urchin paracentrotus lividus immunological response to chemical pollution exposure: the case of lindane.in the marine environment organochlorine insecticides can be broadly detected in water, sediments, and biota. these pollutants may have major ecological consequences since they may affect marine organisms and endanger organismal growth, reproduction or survival. in this study we investigated the modification of some sea urchin immunological parameters in response to subchronic lindane (γ-hch) exposure. adult specimens of the sea urchin paracentrotus lividus were exposed to two different concentr ...201525911048
a novel biomarker for marine environmental pollution of pi-class glutathione s-transferase from mytilus coruscus.glutathione s-transferases (gsts) are the superfamily of phase ii detoxification enzymes that play crucial roles in innate immunity. in this study, a pi-class gst homolog was identified from mytilus coruscus (named as mcgst1, kc525103). the full-length cdna sequence of mcgst1 was 621bp with a 5' untranslated region (utr) of 70bp and a 3'-utr of 201bp. the deduced amino acid sequence was 206 residues in length with theoretical pi/mw of 5.60/23.72kda, containing the conserved g-site and diversifor ...201525910687
a rac1 gtpase is a critical factor in the immune response of shrimp (litopenaeus vannamei) to vibrio alginolyticus infection.the small gtpase rac1 acts as a molecular switch for signal transduction that regulates various cellular functions. however, its functions in crustaceans remain unclear. in this study, a cdna encoding a ras gtpase (lvrac1) in the pacific white shrimp (l. vannamei) was identified and characterized. a recombinant variant of this gtpase, rlvrac1, was expressed in the model organism p. pastoris and its expression was confirmed by mass spectrometry. biochemical assays indicated that the recombinant p ...201525892021
first description and expression analysis of tumor necrosis factor receptor-associated factor 6 (traf6) from the swimming crab, portunus trituberculatus.tumor necrosis factor receptor-associated factor 6 (traf6) is a cytoplasmic adapter protein that mediates signals induced by the tumor necrosis factor receptor (tnfr) superfamily and the interleukin-1 receptor (il-1r). in the present study, the full-length cdna of traf6 (pt-traf6) was identified in a marine crab, portunus trituberculatus. pt-traf6 orf is predicted to encode a 599-amino acid protein, including a ring type zinc finger, two traf-type zinc fingers, and a meprin and traf homology (ma ...201525882635
investigation of possible molecular mechanisms underlying the regulation of adhesion in vibrio alginolyticus with comparative transcriptome analysis.adhesion capability to fish mucus, which can be affected by environmental conditions, is considered to be a key virulence factor of vibrio alginolyticus although the molecular mechanism is still unclear. in the present study, v. alginolyticus was treated with stress conditions including cu(2+) (50 mg/l), pb(2+) (100 mg/l), hg(2+) (50 mg/l) and low ph (ph 5). we found these stress treatments were capable of reducing the adhesion of v. alginolyticus, while the expression levels of multiple genes w ...201525726081
lvdj-1 plays an important role in resistance against vibrio alginolyticus in litopenaeus vannamei.dj-1 was first identified as an oncogene that transformed mouse nih3t3 cells in cooperation with activated ras. it has since exhibited a variety of functions in a range of organisms. in this study, the dj-1 gene in litopenaeus vannamei (lvdj-1) was identified and characterized. a recombinant protein lvdj-1 was produced in pichia pastoris. lvdj-1 expression in vivo was knocked down by dsrna-mediated rna interference (rnai), which led to significantly decreased levels of lvdj-1 mrna and protein. w ...201525703712
dietary supplementation of avicennia marina extract on immune protection and disease resistance in amphiprion sebae against vibrio alginolyticus.the effect of avicennia marina aqueous leaf extract on innate immune mechanisms such as total white blood cell counts (wbc), serum lysozyme activity, respiratory burst assay, alternative complement (ach50) assay, phagocytic activity assay, disease resistance, gut bacteria, and survival rate of clownfish (amphiprion sebae) against vibrio alginolyticus is reported. healthy fish challenged with v. alginolyticus (1 × 10(7) cells ml(-1)) were fed with diets supplemented (0, 1, 2, and 4%) with a. mari ...201525703711
crowding of white shrimp litopenaeus vananmei depresses their immunity to and resistance against vibrio alginolyticus and white spot syndrome virus.immunity parameters and the expression levels of several immune-related proteins, including lipopolysaccharide and β-glucan binding protein (lgbp), peroxinectin (px), intergin β (ib), prophenoloxidase (propo) i, propo ii, α2-macroglobulin (α2-m), cytosolic mangangese superoxide dismutase (cytmnsod), mitochondria manganese superoxide dismutase (mtmnsod), catalase, glutathione peroxidase (gpx), lysozyme, and penaeidin 3a were examined in white shrimp litopenaeus vannamei reared at stocking densiti ...201525700787
identification and analysis of iccu/zn-sod, mn-sod and eccu/zn-sod in superoxide dismutase multigene family of pseudosciaena crocea.superoxide dismutases (sods) belong to a significant and ubiquitous family of metalloenzymes for eliminating excess reactive oxygen species (ros). in this paper, the complete open reading frames (orfs) of intracellular cu/zn-sod (iccu/zn-sod), mn-sod and extracellular cu/zn-sod (eccu/zn-sod) were identified from the large yellow croaker (pseudosciaena crocea, designated as lycsod1, lycsod2 and lycsod3). the sequences were 465 bp, 678 bp and 645 bp (genbank accession no. kj908287, kj908285 and kj ...201525652289
marine bacterial chemoresponse to a stepwise chemoattractant stimulus.we found recently that polar flagellated marine bacterium vibrio alginolyticus is capable of exhibiting taxis toward a chemical source in both forward and backward swimming directions. how the microorganism coordinates these two swimming intervals, however, is not known. the work presented herein is aimed at determining the response functions of the bacterium by applying a stepwise chemoattractant stimulus while it is swimming forward or backward. the important finding of our experiment is that ...201525650943
complete genome sequence of vibrio alginolyticus atcc 17749t.vibrio alginolyticus is a gram-negative halophilic bacterium and has been recognized as an opportunistic pathogen in both humans and marine animals. it is the causative agent of food-borne diseases, such as gastroenteritis, and it invades through wounds in predisposed individuals. in this study, we present the completed genome of v. alginolyticus atcc 17749(t) through high-throughput sequencing.201525635021
molecular cloning, characterization and expression analysis of ppar gamma in the orange-spotted grouper (epinephelus coioides) after the vibrio alginolyticus challenge.ppar gamma was a key nuclear receptor, playing an important role in the immune defense and the anti-inflammatory mechanism. in this study, the full-length ppar gamma (ecppar gamma) was obtained, containing a 5'utr of 133 bp, an orf of 1602 bp and a 3'utr of 26 bp besides the poly (a) tail. the ecppar gamma gene encoded a protein of 533 amino acids with an estimated molecular mass of 60.02 kda and a predicted isoelectric point (pi) of 6.26. the deduced amino acid sequence showed that ecppar gamma ...201525592876
molecular cloning, characterization and expression analysis of complement component c8 beta in the orange-spotted grouper (epinephelus coioides) after the vibrio alginolyticus challenge.complement component c8 beta was a key molecule in the complement system, mediating the mac formation and the bacterial lysis. in this study, the full-length c8 beta (ecc8 beta) was obtained, containing a 5'utr of 25 bp, an orf of 1764 bp and a 3'utr of 198 bp. the ecc8 beta gene encoded a protein of 587 amino acids with an estimated molecular mass of 65.87 kda and a predicted isoelectric point (pi) of 6.35. the deduced amino acid sequence showed that ecc8 beta consisted of the conserved residue ...201525592820
dietary administration of gynura bicolor (roxb. willd.) dc water extract enhances immune response and survival rate against vibrio alginolyticus and white spot syndrome virus in white shrimp litopeneaus vannamei.gynura bicolor (roxb. & willd.) dc., a perennial plant belonging to the asteraceae family, is originated from the tropical area of asia. the total hemocyte count (thc), phenoloxidase (po) activity, respiratory bursts (rbs), superoxide dismutase (sod) activity, and lysozyme activity were examined after white shrimp litopenaeus vannamei had been fed diets containing the water extract of g. bicolor at 0 (control), 0.5, 1.0, and 2.0 g (kg diet)(-1) for 7-28 days. the results indicated that these par ...201525462462
sea bass dicentrarchus labrax (l.) bacterial infection and confinement stress acts on f-type lectin (dlfbl) serum modulation.the f-lectin, a fucose-binding protein found from invertebrates to ectothermic vertebrates, is the last lectin family to be discovered. here, we describe effects of two different types of stressors, bacterial infection and confinement stress, on the modulation of european sea bass dicentrarchus labrax (l.) f-lectin (dlfbl), a well-characterized serum opsonin, using a specific antibody. the infection of the vibrio alginolyticus bacterial strain increased the total haemagglutinating activity durin ...201525307147
establishment of a new cell line from the heart of giant grouper, epinephelus lanceolatus (bloch), and its application in toxicology and virus susceptibility.a new marine fish cell line, derived from the heart of giant grouper, epinephelus lanceolatus (bloch), was established and characterized. the cell line was designated as elgh and subcultured with more than 60 passages. the elgh cells were mainly composed of fibroblast-like cells and multiplied well in leibovitz's l-15 medium supplemented with 10% foetal bovine serum (fbs) at 28 °c. chromosome analysis indicated that the modal chromosome number was 48. the fluorescent signals were detected in elg ...201524372271
vaccination of silver sea bream (sparus sarba) against vibrio alginolyticus: protective evaluation of different vaccinating modalities.in order to develop more effective immunological strategies to prevent vibriosis of farmed marine fish in hong kong and southern china, various vaccine preparations including formalin-, phenol-, chloroform- and heat-killed whole cell bacterins and subcellular lipopolysaccharides (lps), as well as different administration routes, were investigated. fish immunized with the subcellular lps exhibited the best protection [relative percent of survival (rps) = 100], while fish immunized with whole cell ...201526729096
phenol, 2,4-bis(1,1-dimethylethyl) of marine bacterial origin inhibits quorum sensing mediated biofilm formation in the uropathogen serratia marcescens.intercellular communication in bacteria (quorum sensing, qs) is an important phenomenon in disease dissemination and pathogenesis, which controls biofilm formation also. this study reports the anti-qs and anti-biofilm efficacy of seaweed gracilaria gracilis associated vibrio alginolyticus g16 against serratia marcescens. purification and mass spectrometric analysis revealed the active principle as phenol, 2,4-bis(1,1-dimethylethyl) [pd]. pd affected the qs regulated virulence factor production i ...201425377484
a chimeric siderophore halts swarming vibrio.some bacteria swarm under some circumstances; they move rapidly and collectively over a surface. in an effort to understand the molecular signals controlling swarming, we isolated two bacterial strains from the same red seaweed, vibrio alginolyticus b522, a vigorous swarmer, and shewanella algae b516, which inhibits v. alginolyticus swarming in its vicinity. plate assays combined with nmr, ms, and x-ray diffraction analyses identified a small molecule, which was named avaroferrin, as a potent sw ...201424615751
identification and functional characterization of heat shock transcription factor1 in litopenaeus vannamei.heat shock transcription factors belong to the heat shock factor (hsf) protein family, which are involved in heat shock protein (hsp) gene regulation. they are critical for cell survival upon exposure to harmful conditions. in this study, we identified and characterized a hsf1 (lvhsf1) gene in litopenaeus vannamei, with a full-length cdna of 2841 bp and an open reading frame encoding a putative protein of 632 amino acids. through multiple sequence alignment and phylogenetic analysis, it was reve ...201424508618
antibiotic resistance of vibrio species isolated from sparus aurata reared in italian mariculture.extensive use of antimicrobial agents in finfish farming and the consequent selective pressure lead to the acquisition of antibiotic resistance in aquaculture environment bacteria. vibrio genus represents one of the main pathogens affecting gilthead sea bream. the development of antibiotic resistance by vibrio represents a potential threat to human health by exchange of resistant genes to human pathogens through food chain. the objective of the present study was to conduct a multisite survey on ...201425180847
identification of scara3, scara5 and marco of class a scavenger receptor-like family in pseudosciaena crocea.the class a scavenger receptors are important pattern recognition receptors of the innate immune system in living organisms. according to the whole-genome data of large yellow croaker (pseudosciaena crocea), three kinds of scavenger receptors, scara3, scara5 and marco were cloned from the spleen, designated severally as tycsa3, tycsa5 and tycmac. the complete cdnas open reading frames (orf) of tycsa3, tycsa5 and tycmac were 1938 bp, 1677 bp and 1218 bp (genbank accession no. kj467772, kj467773 a ...201425218683
conformational change in the periplamic region of the flagellar stator coupled with the assembly around the rotor.the torque of the bacterial flagellum is generated by the rotor-stator interaction coupled with the ion flow through the channel in the stator. anchoring the stator unit to the peptidoglycan layer with proper orientation around the rotor is believed to be essential for smooth rotation of the flagellar motor. the stator unit of the sodium-driven flagellar motor of vibrio is composed of poma and pomb, and is thought to be fixed to the peptidoglycan layer and the t-ring by the c-terminal periplasmi ...201425197056
detection of polyketide synthase and nonribosomal peptide synthetase biosynthetic genes from antimicrobial coral-associated actinomycetes.the diversity and properties of actinobacteria, predominant residents in coral holobionts, have been rarely documented. in this study, we aimed to explore the species diversity, antimicrobial activities and biosynthetic potential of culturable actinomycetes within the tissues of the scleractinian corals porites lutea, galaxea fascicularis and acropora millepora from the south china sea. a total of 70 strains representing 13 families and 15 genera of actinobacteria were isolated. the antimicrobia ...201425190333
complete genomic sequence of the vibrio alginolyticus lytic bacteriophage pva1.a novel vibrio alginolyticus lytic bacteriophage was isolated from sewage samples obtained from a local aquatic market. morphological analysis revealed that the phage, designated as pva1, belonged to the family podoviridae. the complete genomic sequence of phage pva1 contained 41,529 bp with a g + c content of 43.7 % and 75 putative open reading frames. the genome was grouped into four modules, including phage structure, dna packaging, dna replication and regulation, and some additional function ...201425161033
evaluating the potential of marine bacteriovorax sp. da5 as a biocontrol agent against vibriosis in litopenaeus vannamei larvae.the potential application of bdellovibrio-and-like organisms (balos) for the biocontrol of bacterial diseases has been widely recognized. however, no marine balos have been reported for vibrio-related infections in penaeid shrimp. in the present study, the bacteriolytic ability of the marine bacteriovorax strain da5 against vibrio alginolyticus zoua was examined by cocultivation and electron microscopy, and optimal lysis was observed at 30-35°c and 20-30‰ salinity along with a high multiplicity ...201425139659
comparative study of immune responses in the deep-sea hydrothermal vent mussel bathymodiolus azoricus and the shallow-water mussel mytilus galloprovincialis challenged with vibrio bacteria.the deep-sea hydrothermal vent mussel bathymodiolus azoricus and the continental european coast mytilus galloprovincialis are two bivalves species living in highly distinct marine habitats. mussels are filter-feeding animals that may accumulate rapidly bacteria from the environment. contact with microorganism is thus inevitable during feeding processes where gill tissues assume a strategic importance at the interface between the external milieu and the internal body cavities promoting interactio ...201425089010
characterization and expression analysis of chymotrypsin after bacterial challenge in the mud crab, scylla paramamosain.chymotrypsin is one of the serine proteases families that have various biological functions. a chymotrypsin gene was isolated from hepatopancreas of the mud crab, scylla paramamosain (designated spchy) in this study. the full-length cdna of spchy contained 942 nucleotides with a polyadenylation sequence and encoded a peptide of 270 amino acids with a signal peptide of 17 amino acids. the spchy gene contains seven exons, six introns, a tata box and several transcription factor binding sites that ...201425071403
facile synthesis of multifunctional multi-walled carbon nanotube for pathogen vibrio alginolyticus detection in fishery and environmental samples.interest in carbon nanotubes for detecting the presence of pathogens arises because of developments in chemical vapor deposition synthesis and progresses in biomolecular modification. here we reported the facile synthesis of multi-walled carbon nanotubes (mwcnts), which functioned as immuno-, magnetic, fluorescent sensors in detecting vibrio alginolyticus (va). the structures and properties of functionalized mwcnts were characterized by ultraviolet (uv), fourier transform infrared spectra (ft-ir ...201425059166
proteomic investigation of vibrio alginolyticus challenged caenorhabditis elegans revealed regulation of cellular homeostasis proteins and their role in supporting innate immune system.caenorhabditis elegans has been the preferred model system for many investigators to study pathogenesis. in the present investigation, regulation of c. elegans proteome was explored against v. alginolyticus infection using quantitative proteomics approach. proteins were separated using 2d-dige and the differentially regulated proteins were identified using pmf and maldi tof/tof analysis. the results thus obtained were validated using western blotting for candidate proteins. the corresponding tra ...201425044714
occurrence of virulence genes among vibrio cholerae and vibrio parahaemolyticus strains from treated wastewaters.pathogenic vibrio species are an important cause of foodborne illnesses. the aim of this study was to describe the occurrence of potentially pathogenic vibrio species in the final effluents of a wastewater treatment plant and the risk that they may pose to public health. during the 1-year monitoring, a total of 43 vibrio strains were isolated: 23 vibrio alginolyticus, 1 vibrio cholerae, 4 vibrio vulnificus, and 15 vibrio parahaemolyticus. the pcr investigation of v. parahaemolyticus and v. chole ...201425023745
genome sequences characterizing five mutations in rna polymerase and major capsid of phages ϕa318 and ϕas51 of vibrio alginolyticus with different burst efficiencies.the burst size of a phage is important prior to phage therapy and probiotic usage. the efficiency for a phage to burst its host bacterium can result from molecular domino effects of the phage gene expressions which dominate to control host machinery after infection. we found two podoviridae phages, ϕa318 and ϕas51, burst a common host v. alginolyticus with different efficiencies of 72 and 10 pfu/bacterium, respectively. presumably, the genome sequences can be compared to explain their difference ...201424952762
immune responses of prophenoloxidase in the mud crab scylla paramamosain against vibrio alginolyticus infection: in vivo and in vitro gene silencing evidence.phenoloxidase (po) plays an important role in arthropod melanization. in the present study, a propo gene was obtained from the mud crab scylla paramamosain, then we localized the propo mrna in hemocytes and detected the expression of propo after bacterial challenge. in vivo and in vitro gene silencing mediated by dsrna was also used to investigate the function of propo in innate immune. the full-length of the propo cdna was 2600 bp and the predicted orf encoded a protein of 673 amino acids with ...201424859592
dynamics of self-organized rotating spiral-coils in bacterial swarms.self-propelled particles (spp) exhibit complex collective motions, mimicking autonomous behaviors that are often seen in the natural world, but essentially are generated by simple mutual interactions. previous research on spp systems focuses on collective behaviors of a uniform population. however, very little is known about the evolution of individual particles under the same global influence. here we show self-organized rotating spiral coils in a two-dimensional (2d) active system. by using sw ...201424837552
transgenic expression of salmon delta-5 and delta-6 desaturase in zebrafish muscle inhibits the growth of vibrio alginolyticus and affects fish immunomodulatory activity.marine fish are an important nutritional source for highly polyunsaturated fatty acids (pufas). pufa biosynthesis requires the following key enzymes: delta-4 (δ-4) desaturase, delta-5 (δ-5) desaturase, delta-6 (δ-6) desaturase, delta-5 (δ-5) elongase, and delta-6 (δ-6) elongase. the effect of overexpressing delta-5 desaturase and/or delta-6 desaturase in zebrafish muscle has not previously been reported. herein, we investigated the effects of these proteins on antibacterial and immunomodulatory ...201424811009
the role of hybridization in improving the immune response and thermal tolerance of abalone.recently, frequent death of cultured abalone drew our attention to the stress tolerance of abalone. hybridization is an effective way of genetic improvement in aquaculture, which can introduce improved traits to the hybrids. in this study, we challenged the hybrids between haliotis discus hannai and haliotis gigantea, and their parents with bacteria (vibrio harveyi, vibrio alginolyticus and vibrio parahemolyticus), then held them at 20 °c and 28 °c, survival rates of the parental populations and ...201424794582
[virulence-related genes of vibrio alginolyticus and its virulence in mice].we determinated the virulence factors of vibrio alginolyticus strains isolated from the environment by multiplex pcrs and animal experiments, in order to compare the differences between the highly virulent strain and attenuated virulent strain, and to explore the virulent mechanism of v. alginolyticus in mammals.201424783857
multiplex pcr assays for the detection of vibrio alginolyticus, vibrio parahaemolyticus, vibrio vulnificus, and vibrio cholerae with an internal amplification control.a multiplex polymerase chain reaction (pcr) assay that can simultaneously detect 4 major vibrio spp., vibrio alginolyticus, vibrio parahaemolyticus, vibrio vulnificus, and vibrio cholerae, in the presence of an internal amplification control (iac) was developed. species-specific pcr primers were designed based on the gyrb gene for v. alginolyticus, the collagenase gene for v. parahaemolyticus, the vvha gene for v. vulnificus, and the ompw gene for v. cholerae. additionally, an iac primer pair wa ...201424731836
molecular characterization and functional analysis of two distinct liver-expressed antimicrobial peptide 2 (leap-2) genes in large yellow croaker (larimichthys crocea).liver-expressed antimicrobial peptide 2 (leap-2) plays a vital role in the host innate immune system. in the present study, two leap-2 genes (lcleap-2a and lcleap-2c) from large yellow croaker (larimichthys crocea) were cloned, both of which consist of 3 exons and 2 introns. the lcleap-2a transcripts were expressed in a wide range of tissues, with the highest mrna levels found in the liver and intestine, while lcleap-2c transcripts showed obvious lower mrna levels in all tested tissues compared ...201424727197
gene expression profile analysis of manila clam (ruditapes philippinarum) hemocytes after a vibrio alginolyticus challenge using an immune-enriched oligo-microarray.the manila clam (ruditapes philippinarum) is a cultured bivalve with worldwide commercial importance, and diseases cause high economic losses. for this reason, interest in the immune genes in this species has recently increased. the present work describes the construction of the first r. philippinarum microarray containing immune-related hemocyte sequences and its application to study the gene transcription profiles of hemocytes from clams infected with v. alginolyticus through a time course.201424708293
differential hsp70 expression in mytilus coruscus under various stressors.heat shock proteins (hsps) play crucial roles in protecting cells against environmental stresses, such as heat shock, heavy metals and pathogenic bacteria. among the hsp family, the 70-kda hsps are most responsible for intracellular chaperone and extracellular immunoregulatory functions. the full-length hsp70 cdna of mytilus coruscus (designated as mchsp70, genbank accession no. kf322135) was obtained, which was 2319 bp, including an orf of 1965 bp to encode a polypeptide of 655 amino acid with ...201424704274
identification and functional characterization of a novel ferritin subunit from the tropical sea cucumber, stichopus monotuberculatus.ferritin is one of the major non-harm iron storage proteins that found in most cell types of animals, plants and microorganisms. in this study, a ferritin subunit named stmfer was identified from the sea cucumber (stichopus monotuberculatus) and characterized functionally. the full-length cdna of stmfer is 1184 bp in size with a 5'-untranslated region (utr) of 131 bp, a 3'-utr of 531 bp and an open reading frame of 522 bp that encoding a protein of 173 amino acids with a deduced molecular weight ...201424698995
[the differentiation of specimiens of vibrio parahaemolyticua and vobrio alginolyticus].vibrio parahaemolyticua and vobrio alginolyticus are phylogenetically closely-related species. they have common ecological niches, same cultural features and similar biochemical characteristics. the phenotype variability and taxonomy similarity of strains of these species impedes differentiation of vibrio parahaemolyticua and vobrio alginolyticus according biochemical characteristics. to obtain reliable results of diagnostic application of additional methods of differentiation and identification ...201425872271
[biological characteristics and histopathological observation of vibrio alginolyticus from diseased fish].ulcer disease is one of the most serious diseases and a common problem in various stages marine culture including epinephelus coioides culture of southern china. the isolation and identification of pathogenic bacteria from e. coioides will be useful for monitoring of drug resistance and controlling the outbreak and spread of ulcer disease in e. coioides. the purpose of this study was to characterize the pathogen of e. coioides.201425752145
vibrio parahaemolyticus and its specific bacteriophages as an indicator in cockles (anadara granosa) for the risk of v. parahaemolyticus infection in southern thailand.correlation between the numbers of vibrio parahaemolyticus and its specific bacteriophages in cockles was investigated from june 2009 to may 2010 in hat yai, songkhla, thailand. cockles obtained monthly from a local market were sampled to determine the numbers of v. parahaemolyticus and bacteriophages that could form plaques on ten strains of pandemic and nonpandemic v. parahaemolyticus. in addition, v. parahaemolyticus isolates from clinical samples from hat yai hospital over the same period we ...201424682339
quantitative real time rt-pcr study of pathogen-induced gene expression in rock bream (oplegnathus fasciatus): internal controls for data normalization.rock bream oplegnathus fasciatus is an important economic fish species. in this study, we evaluated the appropriateness of six housekeeping genes as internal controls for quantitative real-time pcr (rt-qpcr) analysis of gene expression in rock bream before and after pathogen infection. the expression of the selected genes in eight tissues infected with vibrio alginolyticus or megalocytivirus was determined by rt-qpcr, and the pcr data were analyzed with genorm and normfinder algorithms. the resu ...201424657097
molecular cloning and characterization of two types of iκbα orthologues in orange-spotted grouper, epinephelus coioides.inhibitors of kappa b (iκbs) are the members of primary regulators of nf-κb, which can inhibit nf-κb activity by blocking the nf-κb in an inactive state in the cytoplasm. in this study, two types of iκbα orthologues (eciκbαa and eciκbαb) from orange-spotted grouper, epinephelus coioides, were cloned and characterized. eciκbαa and eciκbαb encoded putative proteins containing 308 and 318 amino acids, which shared 59% and 53% identity to iκbαa and iκbαb of danio rerio, respectively. amino acid sequ ...201424594011
contribution of many charged residues at the stator-rotor interface of the na+-driven flagellar motor to torque generation in vibrio alginolyticus.in torque generation by the bacterial flagellar motor, it has been suggested that electrostatic interactions between charged residues of mota and flig at the rotor-stator interface are important. however, the actual role(s) of those charged residues has not yet been clarified. in this study, we systematically made mutants of vibrio alginolyticus whose charged residues of poma (mota homologue) and flig were replaced by uncharged or charge-reversed residues and characterized the motilities of thos ...201424464458
the second type of transglutaminase regulates immune and stress responses in white shrimp, litopenaeus vannamei.the total haemocyte count (thc), differential haemocyte count (dhc), phenoloxidase activity, respiratory bursts (release of superoxide anion), superoxide dismutase activity, and phagocytic activity and clearance efficiency to the pathogen vibrio alginolyticus were measured when white shrimp, litopenaeus vannamei, (7.5 ± 0.5 g) were individually injected with diethyl pyrocarbonate-water (depc-h2o) or different dsrna at 3 days of injection. in addition, haemolymph glucose and lactate, and haemocyt ...201424462912
molecular characterization, expression and function analysis of a five-domain kazal-type serine proteinase inhibitor from pearl oyster pinctada fucata.serine proteinase inhibitors represent an expanding superfamily of endogenous inhibitors that are regulate proteolytic events and involved in a variety of physiological and immunological processes. a five-domain kazal-type serine proteinase inhibitor (pokspi) was identified and characterized from pearl oyster pinctada fucata based on expressed sequence tag (est) analysis. the full-length cdna was 737 bp with an open reading frame (orf) 660 bp encoding a 219 amino acid protein a theoretical molec ...201424378679
shrimp that have received carrageenan via immersion and diet exhibit immunocompetence in phagocytosis despite a post-plateau in immune parameters.the effect of carrageenan on the immune response of white shrimp litopenaeus vannamei, was studied in vitro and in vivo. shrimp haemocytes receiving carrageenan at 1 mg ml⁻¹ experienced change in cell size, reduction in cell viability, increase in po activity, serine proteinase activity, and rb in vitro. shrimp received carrageenan via immersion at 200, 400 and 600 mg l⁻¹ after 3 h and orally at 0.5, 1.0 and 2.0 g kg⁻¹ after 3 weeks showed higher proliferation of haematopoietic tissues (hpts) to ...201424361621
putative apolipoprotein a-i, natural killer cell enhancement factor and lysozyme g are involved in the early immune response of brown-marbled grouper, epinephelus fuscoguttatus, forskal, to vibrio alginolyticus.the gram-negative bacterium, vibrio alginolyticus, has frequently been identified as the pathogen responsible for the infectious disease called vibriosis. this disease is one of the major challenges facing brown-marbled grouper aquaculture, causing fish farmers globally to suffer substantial economic losses. the objective of this study was to investigate the proteins involved in the immune response of brown-marbled grouper fingerlings during their initial encounter with pathogenic organisms. to ...201424304156
a novel c1q-domain-containing (c1qdc) protein from mytilus coruscus with the transcriptional analysis against marine pathogens and heavy metals.the c1q-domain-containing (c1qdc) proteins, which are involved in various processes of vertebrates, are important pattern recognition receptors in innate immunity of invertebrates. in present study, a novel c1qdc was identified from mytilus coruscus (designated as mcc1qdc), which was 917 bp in length encoding 236 amino acids with a typical signal peptide of 19 amino acid residues in n-terminus. based on its conserved c1q domain and molecular architecture of 10 β-strand jelly-roll folding topolog ...201424296435
effects of dietary katuk (sauropus androgynus l. merr.) on growth, non-specific immune and diseases resistance against vibrio alginolyticus infection in grouper epinephelus coioides.this study was conducted to investigate the effect of katuk (sauropus androgynus l. merr) on growth, non-specific immune and diseases resistance against vibrio alginolyticus in grouper (epinephelus coioides). grouper juveniles (mean weight 10.97 ± 1.99 g, and length 9.67 ± 0.33 cm) were separated into four groups and cultivated in 100-l tank. each group was fed with diets containing 0, 1.0, 2.5 and 5.0 g/kg herbs diet twice daily. fish were sampled for non-specific immune parameters at 0, 1, 2, ...201424296304
activator protein-1 (ap-1) and response to pathogen infection in the hong kong oyster (crassostrea hongkongensis).growing evidence suggests that the transcription factor activator protein-1 (ap-1), a downstream target of mitogen-activated protein kinase (mapk) signaling, plays a major role in stimulating the synthesis of immune effector molecules during innate immune responses. we have characterized chap-1, an ap-1-like protein in crassostrea hongkongensis that is a member of the ap-1 family of proteins. chap-1 is composed of 290 amino acid residues with a jun and bzip domain at the n- and c-termini, respec ...201424161759
the identification of the first molluscan akirin2 with immune defense function in the hong kong oyster crassostrea hongkongensis.the akirin protein is a nuclear factor in the innate immune system that is highly conserved from insects to mammals and plays key roles in diverse biological processes, including immunity, myogenesis, development and the cellular stress response. however, the function of akirins in mollusk, the second most diverse group of animals, is still poorly understood. in this study, we report the discovery of an akirin2 gene homolog (chakirin2) and its biological functions in the hong kong oyster crassos ...201425284180
the first molluscan acute phase serum amyloid a (a-saa) identified from oyster crassostrea hongkongensis: molecular cloning and functional characterization.serum amyloid a (saa), a major evolutionarily conserved acute-phase protein, participates in many biological processes in eukaryotic cells, including innate immunity. however, little information regarding the relationship between saa and innate immunity in mollusks is currently available. in this report, the first bivalve saa (referred to as chsaa) gene was identified and characterized from the hong kong oyster crassostrea hongkongensis. its full-length cdna is 623 bp, including a 5'-utr of 147 ...201424859593
isolation and characterization of tumor necrosis factor receptor-associated factor 6 (traf6) from grouper, epinephelus tauvina.tumor necrosis factor receptor-associated factor 6 (traf6) is one of the key adapter molecules in toll-like receptor signal transduction that triggers downstream cascades involved in innate immunity. in the present study, a traf6 (named as et-traf6) was identified from the marine fish grouper, epinephelus tauvina by race pcr. the full-length cdna of et-traf6 comprised 1949 bp with a 1713 bp open reading frame (orf) that encodes a putative protein of 570 amino acids. similar to most traf6s, et-tr ...201424811008
the first invertebrate rig-i-like receptor (rlr) homolog gene in the pacific oyster crassostrea gigas.retinoic acid-inducible gene i (rig-i)-like receptor (rlr) is a pivotal receptor that detects numerous rna and dna viruses and mediates the innate induction of interferons and pro-inflammatory cytokines upon viral infection. in the present study, we cloned and characterized the first rig-i gene in a marine mollusk, crassostrea gigas, and designated it as cgrig-i. the full-length cgrig-i cdna is 3436 bp, including 5'- and 3'-untranslated regions (utrs) of 93 bp and 286 bp, respectively, and an op ...201425107697
genomic characterization and expression analysis of five novel il-17 genes in the pacific oyster, crassostrea gigas.interleukin-17 (il-17) is a proinflammatory cytokine that plays an important role in clearing extracellular bacteria and contributes to the pathology of many autoimmune and allergic conditions. in the present study, five novel il-17 homologs were identified by searching and analyzing the pacific oyster genome. all six cgil-17 members (including a previously reported homolog) contained four conserved cysteines that were used in the formation of disulfide bonds. phylogenetic analysis showed that a ...201425090939
effects of hot-water extract of banana (musa acuminata) fruit's peel on the antibacterial activity, and anti-hypothermal stress, immune responses and disease resistance of the giant freshwater prawn, macrobrachium rosenbegii.the hot-extracts isolated from fruit's peel of banana, musa acuminata, was evaluated on the antibacterial activity to pathogens from aquatic animals, and immunostimulating potential, disease resistance and anti-hypothermal stress in giant freshwater prawn, macrobrachium rosenbergii through injection administration. the banana peel extract (bpe) showed good activity against 1 gram-positive and 3 gram-negative pathogens, including lactococcus garvieae, photobacteria damsella, vibrio alginolyticus ...201424906123
development and evaluation of a real-time fluorogenic loop-mediated isothermal amplification assay integrated on a microfluidic disc chip (on-chip lamp) for rapid and simultaneous detection of ten pathogenic bacteria in aquatic animals.rapid, low-cost, and user-friendly strategies are urgently needed for early disease diagnosis and timely treatment, particularly for on-site screening of pathogens in aquaculture. in this study, we successfully developed a real-time fluorogenic loop-mediated isothermal amplification assay integrated on a microfluidic disc chip (on-chip lamp), which was capable of simultaneously detecting 10 pathogenic bacteria in aquatic animals, i.e., nocardia seriolae, pseudomonas putida, streptococcus iniae, ...201424954661
molecular cloning and characterization of a new g-type lysozyme gene (ec-lysg) in orange-spotted grouper, epinephelus coioides.lysozyme acts as an innate immunity molecule against pathogen infection. in this study, a new g-type lysozyme gene with a typical g-type lysozyme domain (designated as ec-lysg) was cloned and characterized from the orange-spotted grouper, epinephelus coioides. the full-length ec-lysg cdna contains 1419 bp and encodes a 256-residue protein containing a 25-residue signal peptide at the n-terminus. blast analysis reveals ec-lysg shares 64% identity with siniperca chuatsi, but 63% to another reporte ...201424877656
antiadhesive activity of poly-hydroxy butyrate biopolymer from a marine brevibacterium casei msi04 against shrimp pathogenic vibrios.vibrio pathogens are causative agents of mid-culture outbreaks, and early mortality syndrome and secondary aetiology of most dreadful viral outbreaks in shrimp aquaculture. among the pathogenic vibrios group, vibrio alginolyticus and v. harveyi are considered as the most significant ones in the grow-out ponds of giant black tiger shrimp penaeus monodon in india. use of antibiotics was banned in many countries due to the emergence of antibiotic-resistant strains and accumulation of residual antib ...201425115578
development and characterization of a novel bioactive polymer with antibacterial and lysozyme-like activity.the development and characterization of a novel bioactive polymer based on the immobilization of glucose oxidase enzyme (gox) in a polyvinyl alcohol (pva) film showing antibacterial activity is presented. the pva-gox composite material was extensively characterized by uv-vis, x-ray photoelectron (xps) spectroscopy and by fourier transform infrared (ftir) spectroscopy to verify the preservation of enzyme structural integrity and activity. the antimicrobial activity of this composite material agai ...201423996728
characteristic and functional analysis of a ficolin-like protein from the oyster crassostrea hongkongensis.ficolins are a group of soluble animal proteins with multiple roles in innate immunity. these proteins recognize and bind carbohydrates in pathogens and activate the complement system, leading to opsonization, leukocyte activation, and direct pathogen killing, which have been reported in many animal species but might not be present in the shellfish lineage. in the present study, we identified the first fibrinogen-related protein from the oyster, crassostrea hongkongensis. this novel ficolin-like ...201425120216
occurrence of vibrio and salmonella species in mussels (mytilus galloprovincialis) collected along the moroccan atlantic coast.this study reports the occurrence of different vibrio and salmonella species in 52 samples of mytilus galloprovincialis collected from four sites along the atlantic coast between agadir and essaouira (anza, cap ghir, imssouane and essaouira). the level of escherichia coli (e. coli) was also determined to evaluate the degree of microbial pollution in the investigated areas. in this study three methods were used : afnor nf en iso 6579 v08-013 for salmonella spp., the provisional method routinely u ...201424936389
ptserpin from the swimming crab portunus trituberculatus, a putative regulator of prophenoloxidase activation with antibacterial activity.serpin or serine protease inhibitor is the largest family of protease inhibitors involved in many innate immune pathways, particularly the prophenoloxidase (propo) activating system in arthropod. here, we report the molecular and functional characterization of ptserpin identified from the swimming crab portunus trituberculatus. the genomic sequence encoding mature peptide of ptserpin gene contained two exons of 84 and 1098 bp separated by one intron of 111 bp. the recombinant ptserpin (rptserpin ...201424861890
dynamics of an interactive network composed of a bacterial two-component system, a transporter and k+ as mediator.kdpd and kdpe form a histidine kinase/response regulator system that senses k(+) limitation and induces the kdpfabc operon, which encodes a high-affinity k(+) uptake complex. to define the primary stimulus perceived by kdpd we focused in this study on the dynamics of the kdp response. escherichia coli cells were subjected to severe k(+) limitation, and all relevant parameters of the kdp response, i.e., levels of kdpfabc transcripts and kdpfabc proteins, as well as extra- and intracellular k(+) c ...201424586952
construction of functional fragments of the cytoplasmic loop with the c-terminal region of poma, a stator component of the vibrio na+ driven flagellar motor.the membrane motor proteins, poma (polar flagellar motility protein a) and pomb (polar flagellar motility protein b), of vibrio alginolyticus form a stator complex that converts energy from the ion flow to mechanical work in bacterial flagellar motors. the cytoplasmic domain of poma is believed to interact with the rotor protein flig to make a torque. in this study, to investigate the function of the cytoplasmic domain of poma, we constructed a series of fragments that flank the cytoplasmic loop ...201424398784
cloning and immune characterization of the c-type lysozyme gene in red-spotted grouper, epinephelus akaara.lysozyme is an important component of the innate immune response against pathogen infection. the gene coding for c-type lysozyme in red-spotted grouper epinephelus akaara was cloned and designated eaclys. the complete cdna contains a 432 bp open reading frame encoding a protein of 144 amino acids displaying 65-91% similarity with the amino acid sequences of human, mouse, chicken, and fish counterparts. recombinant eaclys (reaclys) was expressed in escherichia coli, displayed antibacterial activi ...201424239919
identification of a c-type lectin with antiviral and antibacterial activity from pacific white shrimp litopenaeus vannamei.c-type lectins (ctls) play crucial roles in innate immune responses in invertebrates by recognizing and eliminating microinvaders. in this study, a ctl from pacific white shrimp litopenaeus vannamei (lvctl3) was identified. lvctl3 contains a single c-type lectin-like domain (ctld), which shows similarities to those of other shrimp ctls and has a mutated 'epd' motif in ca(2+)-binding site 2. lvctl3 mrna can be detected in all tested tissues and expression of lvctl3 in gills was up-regulated after ...201424792214
antibacterial efficacy of recombinant siganus oramin l-amino acid oxidase expressed in pichia pastoris.siganus oraminl-amino acid oxidase is a novel natural protein (named sr-laao) isolated from serum of the rabbitfish (s. oramin), which showed antibacterial activity against both gram-positive and gram-negative bacteria and had a lethal effect on the parasites cryptocaryon irritans, trypanosoma brucei brucei and ichthyophthirius multifiliis. in order to test whether recombinant sr-laao (rsr-laao) produced by the eukaryotic expression system also has antimicrobial activity, the yeast pichia pastor ...201425238719
liposome-encapsulated cinnamaldehyde enhances zebrafish (danio rerio) immunity and survival when challenged with vibrio vulnificus and streptococcus agalactiae.cinnamaldehyde, which is extracted from cinnamon, is a natural compound with activity against bacteria and a modulatory immune function. however, the antibacterial activity and immunostimulation of cinnamaldehyde in fish has not been well investigated due to the compound's poor water solubility. thus, liposome-encapsulated cinnamaldehyde (lec) was used to evaluate the effects of cinnamaldehyde on in vitro antibacterial activity against aquatic pathogens and in vivo immunity and protection parame ...201424632045
spalf4: a newly identified anti-lipopolysaccharide factor from the mud crab scylla paramamosain with broad spectrum antimicrobial activity.anti-lipopolysaccharide factors (alfs) are antimicrobial peptides with binding and neutralizing activities to lipopolysaccharide (lps) in crustaceans. this study identified and characterized a novel alf homolog (spalf4) from the mud crab scylla paramamosain. the complete cdna of spalf4 had 756 bp with a 381 bp open reading frame encoding a protein with 126 aa. the deduced protein contained a signal peptide and a lps-binding domain. spalf4 shared the highest identity with ptalf5 at amino acid lev ...201424239582
bacterial motility patterns reveal importance of exploitation over exploration in marine microhabitats. part i: theory.bacteria use different motility patterns to navigate and explore natural habitats. however, how these motility patterns are selected, and what their benefits may be, are not understood. in this article, we analyze the effect of motility patterns on a cell's ability to migrate in a chemical gradient and to localize at the top of the gradient, the two most important characteristics of bacterial chemotaxis. we will focus on two motility patterns, run-tumble and run-reverse-flick, that are observed ...201425296325
transcriptome analysis of the effect of vibrio alginolyticus infection on the innate immunity-related complement pathway in epinephelus coioides.orange-spotted grouper (epinephelus coioides) with protogynous hermaphroditic features are one of the most economically important aquaculture species in taiwan. however, larvae stage grouper are susceptible to infection by the bacterial pathogen vibrio alginolyticus. to better understand the molecular mechanisms of the immune response to v. alginolyticus in epinephelus coioides larvae, we used high-throughput deep sequencing technology to study the effect of infection on gene expression.201425496447
disorders of lipid metabolism. 20144217183
acupuncture analgesia in dentistry. 20144111845
ole modifications of the disabled male. 20144229807
[problem of transfusion hepatitis in public health service]. 20144234419
choosing medicine. 20144121954
occurrence of antibiotic resistance in bacteria isolated from seawater organisms caught in campania region: preliminary study.environmental contamination by pharmaceuticals is a public health concern: drugs administered to humans and animals are excreted with urine or faeces and attend the sewage treatment. the main consequences of use and abuse of antibiotics is the development and diffusion of antibiotic resistance that has become a serious global problem. aim of the study is to evaluate the presence of antimicrobial residues and to assess the antimicrobial resistance in bacteria species isolated from different wild ...201425027759
draft genome sequences of vibrio sp. strains isolated from tetrodotoxin-bearing scavenging gastropod.vibrio sp. strains jcm 18905 and jcm 19053 were isolated from a tetrodotoxin (ttx)-bearing scavenging gastropod, and vibrio sp. strain jcm 18904 was isolated from a sea cucumber. all these are closely related to vibrio alginolyticus. their comparative genome information is useful for studies of ttx production in bacteria.201424948773
activities of the modified polyene n-d-ornithyl amphotericin methyl ester and the azoles ici 153066, bay n 7133, and bay l 9139 compared with those of amphotericin b and ketoconazole in the therapy of experimental blastomycosis.we studied the efficacy of new experimental antifungal drugs, which represent molecular modifications of present active agents, in a murine model of blastomycosis. ketoconazole, previously the best azole drug studied and which is protective when administered orally, was superior to a new oral imidazole, bay l 9139, and a new oral triazole, bay n 7133. a new oral triazole, ici 153066, was markedly more effective than ketoconazole and is the only oral drug studied which came close to producing com ...20143994350
myocardial cell damage in "stone hearts". 20144277587
myocardial cell damage in "stone hearts". 20144277587
[electromyography of the perineal plane with cutaneous electrodes in routine urodynamic examinations]. 20144081958
[autotransfusion through acute, preoperative hemodilution --1st clinical experiences]. 20144464408
the language of dementia in the elderly: a pilot study. 20144052318
evaluating a restrictive formulary system by assessing nonformulary-drug requests.nonformulary-drug requests were used to evaluate a restrictive formulary system in a large university hospital, and a telephone survey of eight similar hospitals was conducted to assess the restrictiveness of their formulary systems. nonformulary-drug requests were evaluated by two drug information pharmacists over a 12-month period (january-december 1984) to assess the frequency with which nonformulary items were ordered, the costs associated with the procurement of nonformulary drug products, ...20144025350
british medical association attacks cigarette smoking. 20143978493
letter: "febrile convulsions". 20144128751
effect of treatment on morbidity in hypertension. veterans administration cooperative study on antihypertensive agents. effect on the electrocardiogram. 20144269435
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