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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of kidney tissue from 5 week old Dahl salt sensitive rats and congenic strain of Chr.10 Dahl salt sensitive rats

ABSTRACT: Gene expression profiling of kidney tissue from 5 week old Dahl salt sensitive rats and congenic strain of Chr.10 Dahl salt sensitive rats.

ORGANISM(S): Rattus norvegicus

SUBMITTER: Alan Deng

PROVIDER: E-GEOD-413 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Kidneys of Dahl salt sensitive rats

Project description:Gene expression profiling of kidney tissue from 5 week old Dahl salt sensitive rats and congenic strain of Chr.10 Dahl salt sensitive rats. Keywords: other

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Transcription profiling of Dahl salt-sensitive and salt-resistant congenic rats

Project description:Kidney samples from three Dahl Salt-sensitive S rats were compared with kidney samples from three S.R(9)x3A congenic rats.

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Comparison of renal transcript levels in Dahl Salt-sensitive (S) rat with S.R congenic rat containing a BP QTL

Project description:Kidney samples from three Dahl Salt-sensitive S rats were compared with kidney samples from three S.R(9)x3A congenic rats. Keywords = Blood Pressure Keywords = Quantitative trait locus Keywords = QTL Keywords = hypertension Keywords = rat Keywords = congenic Keywords: parallel sample

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Microarray analysis of the development of proteinuria in the Dahl salt-sensitive rat

Project description:To get more insight in cause and consequences of proteinuria, we studied glomerular gene expression patterns before and after the onset of increased urinary albumin excretion in a proteinuric rat strain. Spontaneously proteinuric Dahl salt-sensitive rats (Dahl SS) were compared to non-proteinuric, spontaneously hypertensive rats (SHR). In Dahl SS, UAE significantly increased starting from week 5 of age. Glomerular RNA profiles of 4- and 6 week-old rats were studied by Affymetrix microarrays. Keywords: Time course analysis

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Transcription profiling of rat kidney samples from Dahl salt-sensitive and Lewis strains

Project description:Male Dahl salt sensitive and Lewis rats (n=3 each) were fed an 8% NaCl diet starting at 5 weeks of age for 8 weeks. Total RNA was isolated with TRIzol reagent from DS and LEW kidneys and was subjected to microarray analysis. Experiment Overall Design: Male Dahl salt sensitive and Lewis rats (n=3 each) were fed an 8% NaCl diet starting at 5 weeks of age for 8 weeks. Total RNA was isolated with TRIzol reagent from DS and LEW kidneys and was subjected to microarray analysis. The resulting data were analyzed with GeneChip Operating Software ver1.4. Three independent experiments comparing expressions between salt-loaded Dahl salt sensitive and salt-loaded Lewis rats were performed.

2007-11-29 | E-GEOD-4800 | biostudies-arrayexpress

Transcriptomic Analysis in Renal T Lymphocytes Exposes Sodium-Independent Dietary Differences in Dahl Salt-Sensitive Rats

Project description:Background. The Dahl salt-sensitive (SS) rat is an established model of salt-sensitive hypertension and renal damage. Recently, sodium-independent dietary effects were shown to be important in the development of the SS hypertensive phenotype. Compared to Dahl SS/JrHsdMcwi (SS/MCW) rats fed a purified diet (AIN-76A), grain-fed Dahl SS/JrHsdMcwiCrl rats (SS/CRL; Teklad 5L2F) were less susceptible to salt-induced hypertension and renal damage. Methods. With the known role of the immune system in hypertension, the present study characterized the immune cells infiltrating SS/MCW and SS/CRL kidneys. To further identify distinct molecular pathways between SS/MCW and SS/CRL, transcriptomic analysis was performed via RNA sequencing in T-cells isolated from the blood and kidneys of low and high salt-fed rats. Results. Following a 3-week high salt (4.0% NaCl) challenge, SS/CRL rats were protected from salt-induced hypertension (116.5±1.2 vs 141.9±14.4 mmHg) and albuminuria (21.7±3.5 vs 162.9±22.2 mg/day) compared to SS/MCW. Additionally, the absolute number of immune cells infiltrating the kidney was significantly reduced in SS/CRL. RNA-seq revealed >50% of all annotated genes in the entire transcriptome to be significantly differentially expressed in T-cells isolated from blood versus kidney. Pathway analysis of significant differentially expressed genes between SS/MCW and SS/CRL renal and circulating T-cells demonstrated salt-induced changes in genes related to inflammation in SS/MCW compared to metabolism-related pathways in SS/CRL. Conclusions. These functional and transcriptomic T-cell differences between SS/MCW and SS/CRL show that sodium-independent dietary effects may influence the immune response and infiltration of immune cells into the kidney, ultimately impacting susceptibility to salt-induced hypertension and renal damage.

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Project description:We analyzed the glomerular proteome in Dahl salt sensitive rats after 21 days of induction of hypertension, after 7 days and in control conditions.

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Renal medullary genes in salt-sensitive hypertension

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Hypertensive Rat Kidney Study: Gender-Selective Responses to Salt in Dahl-Iwai & Sprague-Dawley Rats

Project description:Dahl-Iwai (DI) salt-sensitive rats were studied using microarrays to identify gender-specific differences in the kidney, both basal differences and responses to a high salt diet. In DI rat kidneys, gene expression profiles demonstrated inflammatory and fibrotic responses selectively in females. Gonadectomy of DI rats abrogated gender differences in gene expression. Gonadectomized female and gonadectomized male DI rats both responded to high salt with the same spectrum of gene expression changes as intact female DI rats. Androgens dominated the gender selective responses to salt. Several androgen-responsive genes were identified with roles potentiating the differential responses to salt including increased male expression of Angiotensin-Vasopressin Receptor and Prolactin Receptor, decreased 5-alpha reductase, and mixed increases and decreases in expression of Cyp4a- genes that can produce eicosanoid hormones. These gender differences potentiate sodium retention by males, and increase kidney function during gestation by females. Keywords: Disease-State Analysis (Salt-Sensitive Hypertension)

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