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Porcine spleen_Haemophilus Parasuis infected_7days

ABSTRACT: Haemophilus parasuis(HPS) is a prominent swine pathogen that causes Glässer's disease characterized by fibrinous polyserositis, meningitis and arthritis; however, the molecular mechanisms underlying disease pathogenesis remains poorly understood, particularly the host counteraction to HPS invasion by the immune system. Here, we investigated the global expression changes in spleen following HPS infection using the Affymetrix Porcine Genechip.Our findings indicate previously unrecognized gene transcription changes in case of HPS infection in vivo and many presumed cascades in the study are clearly merit further investigation. Our data should provide new clues for immune response in mammals and identification of candidate genes related to HPS resistance.

ORGANISM(S): Sus scrofa

PROVIDER: GSE11787 | GEO | 2009/03/26

SECONDARY ACCESSION(S): PRJNA105983

REPOSITORIES: GEO

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Porcine spleen_Haemophilus Parasuis infected_7days

Project description:Haemophilus parasuis(HPS) is a prominent swine pathogen that causes GlM-CM-$sser's disease characterized by fibrinous polyserositis, meningitis and arthritis; however, the molecular mechanisms underlying disease pathogenesis remains poorly understood, particularly the host counteraction to HPS invasion by the immune system. Here, we investigated the global expression changes in spleen following HPS infection using the Affymetrix Porcine Genechip.Our findings indicate previously unrecognized gene transcription changes in case of HPS infection in vivo and many presumed cascades in the study are clearly merit further investigation. Our data should provide new clues for immune response in mammals and identification of candidate genes related to HPS resistance. All animal tissue collection procedures were performed according to protocols approved by The Hubei Province, PR China for Biological Studies Animal Care and Use Committee. Piglets at 30 days old were determined to be HPS-free by serum indirect haemagglutination test before artificial bacterial challenges. Each piglet was intratracheally challenged with 5M-CM-^W108 colony-forming units (CFU) per millilitre of HPS strain 0165 (serotype 5) . A total of 5 piglets were challenged, and 5 pigs were used as controls. These two groups were raised in isolated facilities. Six microarrays were used in the experiment, corresponding to the RNAs from spleen tissues of three most severe piglets with fibrinous polyserositis, meningitis and arthritis after HPS infection and three controls.

2009-03-26 | E-GEOD-11787 | biostudies-arrayexpress

Expression data from Porcine alveolar macrophages infection with Haemophilus parasuis (HPS)

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Expression data from Porcine alveolar macrophages of piglets experimentally infected with Haemophilus parasuis serotype 4 (HPS4) for 28 days

Project description:Porcine alveolar macrophages (PAMs) play impoartant role in innate immunity. Haemophilus parasuis is the etiological agent of Glasser’s disease in pigs. Haemophilus parasuis is the etiological agent of Glasser’s disease in pigs. We used microarrays to study the transcriptome of PAMs infection with HPS4.

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Expression data from Porcine alveolar macrophages infection with Haemophilus parasuis (HPS)

Project description:Porcine alveolar macrophages (PAMs) play impoartant role in innate immunity. Haemophilus parasuis is the etiological agent of Glasser’s disease in pigs. We used microarrays to study the transcriptome of PAMs infection with Haemophilus parasuis. Healthy Pigs were intratracheally challenged with H.parasuis strain 0165. And the PAMs were isolated at 6 dpi. RNA extraction were extracted from PAMs that obtained from infection pigs and control pigs and hybridization on Affymetrix microarrays. We sought to obtain the differently expressed genes that related to H.parasuis infection to understand the mechanism of PAMs against H.parasuis.

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Global Gene Expression Profiles of Cecropin B Induces Resistance in Haemophilus parasuis

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Global Gene Expression Profiles of Cecropin B Induces Resistance in Haemophilus parasuis

Project description:To understand the mechanism of the adaptations, global gene expression profiles of the cecropin B--resistant strains of Haemophilus parasuis, The development of cecropin B (CB) resistance in H. parasuis SH0165 by exposing SH0165 using various concentrations of CB was investigated. One colony of bacterial cultures grown on TSA containing 30M-NM-<g/mL CB was named CBR30, CBR30 cultured in TSA without CB for 50 passages was named CBR30-50. we used microarray technology to analyze the variation of the H. parasuis SH0165 transcriptional profile in CBR30 and CBR30-50. Our analysis to identify several genes whose system could be involved in inorganic ion transport, amino acid transport, and metabolism. Quantitative PCR was used to validate the differential expression of selected genes. The H. parasuis SH0165 control group was normal culture with no tilmicosin at OD600 >0.3 (12 h). The H. parasuis CBR30 was normal culture with 30M-NM-<g/mL cecropin B at OD600 >0.3 (20 h). The H. parasuis CBR30-50 was normal culture with no cecropin B at OD600 >0.3 (12 h). Three independent experiments were performed on each group using a different sample for each experiment.

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