Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Expression data from mouse kidney tissue

ABSTRACT: The role of the renin-angiotensin system in chronic kidney disease involves multiple peptides and receptors. Exerting antipodal pathophysiological mechanisms, renin inhibition and AT1 antagonism ameliorate renal damage. This is a comparison between the renin inhibitor aliskiren with the At1 antagonist losartan in mice with chronic kidney disease due to renal ablation. Renal tissue from ablated mice was used after 6-week treatment with either 500 mg/l losartan or 50 mg/kg aliskiren per day (n = 5)

ORGANISM(S): Mus musculus

SUBMITTER: Thomas Streichert

PROVIDER: E-GEOD-34552 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

AT1 antagonism and renin inhibition in mice: pivotal role of targeting angiotensin II in chronic kidney disease.

Fraune Christoph C Lange Sascha S Krebs Christian C Hölzel Alexandra A Baucke Jana J Divac Nevena N Schwedhelm Edzard E Streichert Thomas T Velden Joachim J Garrelds Ingrid M IM Danser A H Jan AH Frenay Anne-Roos AR van Goor Harry H Jankowski Vera V Stahl Rolf R Nguyen Genevieve G Wenzel Ulrich Otto UO

American journal of physiology. Renal physiology 20120711 7

The role of the renin-angiotensin system in chronic kidney disease involves multiple peptides and receptors. Exerting antipodal pathophysiological mechanisms, renin inhibition and AT(1) antagonism ameliorate renal damage. However, it is unclear which mechanism exerts better nephroprotection. We compared the renin inhibitor aliskiren with the AT(1) antagonist losartan in mice with chronic kidney disease due to renal ablation. Doses were adjusted to equipotent inhibition of the renin-angiotensin s ...[more]

PMID: 22791343

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Project description:Dyslipidemia is a significant risk factor for progression of diabetic kidney disease (DKD). To identify individual lipids and lipid networks that may be involved in DKD progression, we performed untargeted lipidomic analysis of kidney cortex tissue from diabetic db/db and db/db eNOS-/- mice along with nondiabetic littermate controls. A subset of mice were treated with the renin-angiotensin system (RAS) inhibitors, lisinopril and losartan, which improves the DKD phenotype in the db/db eNOS-/- mouse model. Of the three independent variables in this study, diabetes had the largest impact on overall lipid levels in the kidney cortex, while eNOS expression and RAS inhibition had smaller impacts on kidney lipid levels. Kidney lipid network architecture, particularly of networks involving glycerolipids such as triacylglycerols, was substantially disrupted by worsening kidney disease in the db/db eNOS-/- mice compared to the db/db mice, a feature that was reversed with RAS inhibition. This was associated with decreased expression of the stearoyl-CoA desaturases, Scd1 and Scd2, with RAS inhibition. In addition to the known salutary effect of RAS inhibition on DKD progression, our results suggest a previously unrecognized role for RAS inhibition on the kidney triacylglycerol lipid metabolic network. Keywords: Dyslipidemia is a significant risk factor for progression of diabetic kidney disease (DKD). To identify individual lipids and lipid networks that may be involved in DKD progression, we performed untargeted lipidomic analysis of kidney cortex tissue from diabetic db/db and db/db eNOS-/- mice along with non-diabetic littermate controls. A subset of mice were treated with the renin-angiotensin system (RAS) inhibitors, lisinopril and losartan, which improves the DKD phenotype in the db/db eNOS-/- mouse model. Of the three independent variables in this study, diabetes had the largest impact on overall lipid levels in the kidney cortex, while eNOS expression and RAS inhibition had smaller impacts on kidney lipid levels. Kidney lipid network architecture, particularly of networks involving glycerolipids such as triacylglycerols, was substantially disrupted by worsening kidney disease in the db/db eNOS-/- mice compared to the db/db mice, a feature that was reversed with RAS inhibition. This was associated with decreased expression of the stearoyl-CoA desaturases, Scd1 and Scd2, with RAS inhibition. In addition to the known salutary effect of RAS inhibition on DKD progression, our results suggest a previously unrecognized role for RAS inhibition on the kidney triacylglycerol lipid metabolic network.

Dataset Information

Expression data from mouse kidney tissue

Publications

AT1 antagonism and renin inhibition in mice: pivotal role of targeting angiotensin II in chronic kidney disease.

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