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Edwardsiella ictaluri

ABSTRACT: Causes enteric septicemia in catfish

PROVIDER: PRJNA35567 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	DRR489305_1.fastq.gz	Fastqsanger.gz
	DRR489305_2.fastq.gz	Fastqsanger.gz
	DRR489306_1.fastq.gz	Fastqsanger.gz
	DRR489307_1.fastq.gz	Fastqsanger.gz

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Expression analysis of Edwardsiella ictaluri 93-146 wild type and mutant strains during catfish serum exposure.

2013-12-15 | GSE46011 | GEO

Expression analysis of Edwardsiella ictaluri 93-146 wild type and mutant strains during catfish fry encounter.

2013-12-15 | GSE46007 | GEO

Expression analysis of Edwardsiella ictaluri 93-146 wild type and mutant strains during catfish fry encounter.

Project description:Edwardsiella ictaluri is the causitive agent of enteric septicemia of catfish, one of the most important diseases impacting US catfish industry. The overall objective of this study is to identify E. ictaluri genes required for host encounter. 4-plex NimbleGen array study using total RNA obtained from wild type and mutant Edwardsiella ictaluri encountered with or without catfish fry. Each treatment had four biological replica and each plex had two probe sets.

2013-12-15 | E-GEOD-46007 | biostudies-arrayexpress

Expression analysis of Edwardsiella ictaluri 93-146 wild type and mutant strains during catfish serum exposure.

Project description:Edwardsiella ictaluri is the causitive agent of enteric septicemia of catfish, one of the most important diseases impacting US catfish industry. The overall objective of this study is to identify E. ictaluri genes required for serum resistance. 4-plex array study using total RNA obtained from wild type and mutant Edwardsiella ictaluri exposed to heat-inactivated catfish serum and normal serum. Each treatment had four biological replica and each plex had two probe sets.

2013-12-15 | E-GEOD-46011 | biostudies-arrayexpress

Transcriptomic profiling of the livers of blue catfish (Ictalurus furcatus) after infection with Edwardsiella ictaluri

Project description:We have utilized a high-density oligonucleotide microarray for catfish in order to study the transcriptomic responses of blue catfish following infection with E. ictaluri and to identify and develop important immune-related markers for future characterization and genetic mapping. Microarray analysis of the transcriptome profile of the blue catfish liver following infection with the Gram negative bacterium led to the identification of 103 differentially expressed transcripts. Results indicated the strong upregulation of several pathways likely involved in the inflammatory immune response. A multifaceted response to infection was observed, encompassing the complement cascade, iron regulation, inflammatory cell signaling, and antigen processing and presentation. The induction of several components of the MHC class I-related pathway following infection with an intracellular bacterium is reported here for the first time in fish. Taken together, the microarray results add to our understanding of the teleost immune responses and will provide a solid foundation for future functional characterization, genetic mapping, and QTL analysis of immunity-related genes from catfish. Keywords: Disease state analysis

2007-11-22 | GSE6350 | GEO

Expression analysis of channel catfish anterior kidney at 48h post immersion challenge of vaccinated fish (28 days post vaccination with attenuated Edwardsiella ictaluri) with virulent E. ictaluri

2011-10-05 | GSE32588 | GEO

Expression analysis of channel catfish anterior kidney at 48h post immersion vaccination with attenuated Edwardsiella ictaluri

2011-09-10 | GSE32046 | GEO

Expression analysis of channel catfish anterior kidney at 48h post immersion challenge of vaccinated fish (28 days post vaccination with attenuated Edwardsiella ictaluri) with virulent E. ictaluri

Project description:To determine the global gene transcriptional changes in vaccinated channel catfish anterior kidney after immersion challenge with a virulent Edwardsiella ictaluri compared to sham vaccinated catfish control. The attenuated Edwardsiella ictaluri used for vaccination was Aquavac-ESC which was commercially available, the virulent strain of Edwardsiella ictaluri is the AL93-58 strain. A six chip study using total RNA samples including 3 controls (no vaccination, no challenge) and 3 treated groups (challenge after vaccination). Each RNA sample used for microarray was pooled fish anterior kidney samples (5 fish anterior kidney samples were pooled as one). Each chip measrues the expression level of 65,182 genes. For each sequence, 3 probes were selected. Two copies were prepared on arrays.

2011-10-04 | E-GEOD-32588 | biostudies-arrayexpress

Global assessment of the acute phase response in channel catfish after infection with a Gram negative bacterium

Project description:The acute phase response (APR) is a set of metabolic and physiological reactions occurring in the host in response to tissue infection or injury and is a crucial component of the larger innate immune response. The APR is best characterized by dramatic changes in the concentration of a group of plasma proteins known as acute phase proteins (APP) which are synthesized in the liver and which function in a wide range of immunity-related activities. Utilizing a second generation high-density in situ oligonucleotide microarray for catfish, we have surveyed for the first time the APR in channel catfish liver following infection with Edwardsiella ictaluri, a fast-acting bacterial pathogen that causes enteric septicemia of catfish. Our catfish microarray design (28K) builds upon a previous 19K channel catfish array by adding recently sequenced immune transcripts from channel catfish along with 7159 unique sequences from closely-related blue catfish. Analysis of microarray results using a traditional two-fold change in gene expression cutoff and a 10% false discovery rate revealed a well-developed APR in catfish, with particularly high up-regulation (>50-fold) of genes involved in iron homeostasis (i.e. intelectin, hemopexin, haptoglobin, ferritin, and transferrin). Other classical APP upregulated greater than two-fold included coagulation factors, proteinase inhibitors, transport proteins, and complement components. Up-regulation of the majority of the complement cascade including the membrane attack complex components and complement inhibitors was observed. A number of pathogen recognition receptors (PRRs) and chemokines were also differentially expressed in the liver following infection. Validation with real-time PCR confirmed microarray results. Keywords: Disease state analysis

2007-10-23 | GSE6105 | GEO

Expression analysis of channel catfish anterior kidney at 48h post immersion vaccination with attenuated Edwardsiella ictaluri

Project description:To determine the global gene transcriptional changes in channel catfish anterior kidney after immersion vaccination with attenuated Edwardsiella ictaluri compared to sham vaccinated catfsih control. The attenuated Edwardsiella ictaluri used for vaccination was Aquavac-ESC which was commercially available. A six chip study using total RNA samples including 3 control and 3 vaccinated samples. Each RNA sample used for microarray was poold fish anterior kidney samples (5 fish anterior kidney samples were pooled as one). Each chip measrues the expression level of 65,182 genes. For each sequence, 3 probes were selected. Two copies were prepared on arrays.

2011-09-09 | E-GEOD-32046 | biostudies-arrayexpress

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