The World Health Organization has recently labeled obesity as one of the top global health problems. One of the primary reasons for the increase in chronic kidney disease is the increase in obesity related type 2 diabetes and its co-existence with hypertension. The clustering of cardiovascular risk factors such as inflammation, endothelial dysfunction and insulin resistance are intertwined in obesity and hypertension. This triad of risk factors is largely responsible for the progression of chronic kidney disease in obesity and hypertension or what is now known as Cardiometabolic Syndrome. TNF- is an important cytokine secreted by adipose tissue that can increase cardiovascular risk and end organ damage in obesity. We have recently demonstrated that TNF- can decrease Cyp2c derived epoxyeicosatrienoic acids (EETs). These Cyp2c derived epoxyeicosanoids have renal and cardiovascular protective properties. A signaling pathway that could possible link TNF- and epoxides to endothelial dysfunction and renal damage is NFB activation of cell adhesion molecules such as MCP-1. The contribution of TNF-, epoxyeicosanoids, and NFB to the progression of chronic kidney disease in obesity and hypertension has not been elucidated. Therefore, we will test the hypothesis that increased TNF- , decreased epoxides and increased MCP-1 contribute to renal vascular injury in obesity and hypertension. We will determine the effects of high fat diet induced obesity on afferent arteriolar function, blood pressure and renal injury in hypertensive animals. The current proposal will define the contribution of TNF-, EETs, NFB and MCP-1 and interactions between these pathways in obesity and hypertension. This proposal incorporates novel metabolic oxylipid profiling, RT-PCR arrays and targeted analysis of cellular mechanisms that will allow for unique insight concerning mechanisms that contribute to the progression of kidney disease in obesity and hypertension. Collectively, the proposed experiments in this application will provide novel mechanistic insight on the progression of chronic kidney disease in obesity and hypertension. ? ? Project Narrative: The World Health Organization has recently labeled obesity as one of the top global health issues. One of the primary reasons for the increase in chronic kidney disease is the increase in obesity related diabetes and its co- existence with hypertension. This project will test the hypothesis that interactions between fatty acid metabolites and inflammatory molecules accelerate the progression of chronic kidney disease in obesity and hypertension. On the whole, the proposed experiments in this application will provide novel insight and therapeutic targets for the treatment of chronic kidney disease in obesity and hypertension. ? ? ? ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Research Project (R01)
Project #
2R01HL059699-10A2
Application #
7460462
Study Section
Hypertension and Microcirculation Study Section (HM)
Program Officer
Barouch, Winifred
Project Start
1998-01-01
Project End
2012-05-31
Budget Start
2008-06-01
Budget End
2009-05-31
Support Year
10
Fiscal Year
2008
Total Cost
$389,060
Indirect Cost
Name
Medical College of Wisconsin
Department
Pharmacology
Type
Schools of Medicine
DUNS #
937639060
City
Milwaukee
State
WI
Country
United States
Zip Code
53226
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Hwang, Sung Hee; Wagner, Karen; Xu, Jian et al. (2017) Chemical synthesis and biological evaluation of ?-hydroxy polyunsaturated fatty acids. Bioorg Med Chem Lett 27:620-625
Liu, Jun-Yan; Morisseau, Christophe; Huang, Huazhang et al. (2016) Screening of soluble epoxide hydrolase inhibitory ingredients from traditional Chinese medicines for anti-inflammatory use. J Ethnopharmacol 194:475-482
Imig, J D (2016) Epoxyeicosatrienoic Acids and 20-Hydroxyeicosatetraenoic Acid on Endothelial and Vascular Function. Adv Pharmacol 77:105-41
Liu, Jun-Yan; Tsai, Hsing-Ju; Morisseau, Christophe et al. (2015) In vitro and in vivo metabolism of N-adamantyl substituted urea-based soluble epoxide hydrolase inhibitors. Biochem Pharmacol 98:718-31
Wecksler, Aaron T; Hwang, Sung Hee; Liu, Jun-Yan et al. (2015) Biological evaluation of a novel sorafenib analogue, t-CUPM. Cancer Chemother Pharmacol 75:161-71
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Sporková, Alexandra; Jíchová, Sárka; Husková, Zuzana et al. (2014) Different mechanisms of acute versus long-term antihypertensive effects of soluble epoxide hydrolase inhibition: studies in Cyp1a1-Ren-2 transgenic rats. Clin Exp Pharmacol Physiol 41:1003-13
Mohamed, Islam N; Hafez, Sherif S; Fairaq, Arwa et al. (2014) Thioredoxin-interacting protein is required for endothelial NLRP3 inflammasome activation and cell death in a rat model of high-fat diet. Diabetologia 57:413-23
Bettaieb, Ahmed; Chahed, Samah; Tabet, George et al. (2014) Effects of soluble epoxide hydrolase deficiency on acute pancreatitis in mice. PLoS One 9:e113019

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