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Longitudinal multi-organ transcriptomic atlas of salt-induced hypertension

ABSTRACT: Salt-sensitive hypertension is a common form of hypertension characterized by an exaggerated blood pressure response to dietary salt intake. The molecular mechanisms linking salt-induced hypertension to multi-organ damage remain poorly defined. To address this issue, we generated a longitudinal multi-organ transcriptomic atlas by performing RNA sequencing on the kidney cortex, kidney medulla, liver, and heart across four stages of hypertension in male Dahl salt-sensitive rats. These data provide a valuable resource for identifying organ-specific transcriptional responses involved in the pathogenesis of salt-induced hypertension.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE305010 | GEO | 2026/04/11

REPOSITORIES: GEO

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Renal medullary genes in salt-sensitive hypertension

Project description:Substitution of chromosome 13 from Brown Norway BN/SsNHsd/Mcw (BN/Mcw) rats into the Dahl salt-sensitive SS/JrHsd/Mcw (SS/Mcw) rats resulted in substantial reduction of blood pressure salt sensitivity in this consomic rat strain designated SSBN13. In the present study, we attempted to identify genes associated with salt-sensitive hypertension by utilizing a custom, known-gene cDNA microarray to compare the mRNA expression profiles in the renal medulla (a tissue playing a pivotal role in long-term blood pressure regulation) of SS/Mcw and SSBN13 rats on either low-salt (0.4% NaCl) or high-salt (4% NaCl, 2 wk) diets. Keywords: Dahl S rat; blood pressure; kidney; consomic rats

2005-11-17 | GSE3608 | GEO

Preservation of Myogenic Tone in Kidney Microvasculature of Dahl Salt-Sensitive Rats. Role of C-C motif chemokine ligand 2

Project description:Kidney injury mechanisms that develop in salt-sensitive (SS) hypertension are incompletely understood. Using the Dahl SS rat, which is a prominent model of salt-sensitive hypertension and associated kidney injury, loss of function of the pro-inflammatory transcription factor, ETS-1, corrects kidney microvascular autoregulatory dysfunction and injury. C-C motif chemokine ligand 2 (CCL2) is a direct target of ETS-1, so SS rats lacking Ccl2 (termed (SSCcl2 -/-) were therefore examined. Unlike SS rats, SSCcl2 -/- rats did not develop salt-sensitive hypertension, loss of autoregulation of afferent arterioles, or kidney injury. cDNA libraries from renal microvasculature of these rats was sequenced.

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2025-12-14 | PXD062350 | Pride

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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Dietary salt and renal function

Project description:Serum and glucocorticoid-induced kinase 1 (SGK1) activates the epithelial sodium channel (eNaC) in tubules. We examined renal SGK1 abundance in salt-adaptation and in salt-sensitive hypertension. Sprague-Dawley and Dahl salt-sensitive rats were placed on either 8% or 0.3% NaCl diets for 10 days. Plasma aldosterone levels were approximately 2.5-fold greater on 0.3% versus 8% NaCl diets in both rat strains. Both serum and glucocorticoid-induced kinase 1 transcript and protein abundance were less (P<0.01) in Sprague-Dawley rats and greater (P<0.01) in Dahl salt-sensitive rats on 8% versus 0.3% NaCl diets. The cDNA sequences of serum and glucocorticoid-induced kinase 1 in both strains of rat were the same. The present results provide evidence that the abundance of serum and glucocorticoid-induced kinase 1 in rat kidney may play a role in salt adaptation and the pathogenesis of hypertension and suggests that aldosterone is not the primary inducer of SGK1 in the Sprague-Dawley rat. Keywords = Rattus norvegicus, Sprague Dawley, Dahl SS/Jr, kidney, NaCl diet Keywords: other

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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

2003-08-20 | GSE413 | GEO

Transcription profiling of rat kidney samples from Dahl SS/J and Sprague Dawley animals placed on high salt and basal salt diets

Project description:Serum and glucocorticoid-induced kinase 1 (SGK1) activates the epithselial sodium channel (eNaC) in tubules. We examined renal SGK1 abundance in salt-adaptation and in salt-sensitive hypertension. Sprague-Dawley and Dahl salt-sensitive rats were placed on either 8% or 0.3% NaCl diets for 10 days. Plasma aldosterone levels were approximately 2.5-fold greater on 0.3% versus 8% NaCl diets in both rat strains. Both serum and glucocorticoid-induced kinase 1 transcript and protein abundance were less (P<0.01) in Sprague-Dawley rats and greater (P<0.01) in Dahl salt-sensitive rats on 8% versus 0.3% NaCl diets. The cDNA sequences of serum and glucocorticoid-induced kinase 1 in both strains of rat were the same. The present results provide evidence that the abundance of serum and glucocorticoid-induced kinase 1 in rat kidney may play a role in salt adaptation and the pathogenesis of hypertension and suggests that aldosterone is not the primary inducer of SGK1 in the Sprague-Dawley rat.

2007-10-11 | E-GEOD-599 | biostudies-arrayexpress

Monoclonal Antibody to Marinobufagenin Downregulates TGFβ Profibrotic Signaling in Left Ventricle and Kidney and Reduces Tissue Remodeling in Salt‐Sensitive Hypertension [LV_Kidney]

Project description:Elevated levels of an endogenous Na/K‐ATPase inhibitor marinobufagenin accompany salt‐sensitive hypertension and are implicated in cardiac fibrosis. Immunoneutralization of marinobufagenin reduces blood pressure in Dahl salt‐sensitive (Dahl‐S) rats. The effect of the anti‐marinobufagenin monoclonal antibody on blood pressure, left ventricular (LV) and renal remodeling, and LV gene expression were investigated in hypertensive Dahl‐S rats.

2022-07-12 | GSE208009 | GEO

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.

2019-08-26 | GSE127000 | GEO

Arhgef11 high and low salt kidney proteomic analysis

Project description:Arhgef11 is a Rho guanine nucleotide exchange factor previously implicated in kidney injury in the Dahl salt-sensitive rat (SS-WT). Through exchange of GDP for GTP, Arhgef11 regulates cytoskeletal structure, function, and cell-cell contacts through a variety of stimuli (e.g., G-protein coupled receptors, growth factors, and shear stress). We studied the SS-Arhgef11-/- rat model at 4-12 weeks of age under low and high salt (0.3% or 2% NaCl). To better understand the molecular mechanisms associated with renal protection from loss of Arhgef11, MS/MS proteomics was performed on kidney from SS-Arhgef11-/- and SS-WT at week 12 (low-salt). At week 12, 1017 genes and 363 proteins were observed. In summary, in vivo phenotyping provides strong evidence that increased Arhgef11 expression in the Dahl S rat leads to actin cytoskeleton mediated changes in cell morphology and cell function (impaired reuptake filtered protein) that promote kidney injury, hypertension, and decline in kidney function.

2021-09-08 | PXD011758 | Pride

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