ArticleAmerican journal of physiology. Renal physiology2014
Cyp2c44 epoxygenase in the collecting duct is essential for the high K+ intake-induced antihypertensive effect.
Article in American journal of physiology. Renal physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 20 citations in OpenAlex.
- Multiple Reaction Monitoring (MRM)-Based Targeted Kidney Metabolite Profiling of a Mouse Model of Hyperuricemia.Metabolites · 2026Article
- Bioactive lipids in hypertension.Advances in pharmacology (San Diego, Calif.) · 2023Article
- Orally active epoxyeicosatrienoic acid analogs in hypertension and renal injury.Advances in pharmacology (San Diego, Calif.) · 2022Article
- Epoxy Fatty Acids: From Salt Regulation to Kidney and Cardiovascular Therapeutics: 2019 Lewis K. Dahl Memorial Lecture.Hypertension (Dallas, Tex. : 1979) · 2020Article
- Epoxyeicosatrienoic acid metabolites inhibit Kir4.1/Kir5.1 in the distal convoluted tubule.American journal of physiology. Renal physiology · 2020Article
- Soluble Epoxide Hydrolase Inhibition Prevents Experimental Type 4 Cardiorenal Syndrome.Frontiers in molecular biosciences · 2020Article
- Arachidonic Acid Metabolism and Kidney Inflammation.International journal of molecular sciences · 2019Review
- The arachidonic acid monooxygenase: from biochemical curiosity to physiological/pathophysiological significance.Journal of lipid research · 2018Article
- Effect of Cytochrome P450 Metabolites of Arachidonic Acid in Nephrology.Journal of the American Society of Nephrology : JASN · 2017Review
- Orally Active Epoxyeicosatrienoic Acid Analogs.Journal of cardiovascular pharmacology · 2017Review
- Cyp2c44-mediated decrease of 15-HETE exacerbates pulmonary hypertension.American journal of physiology. Heart and circulatory physiology · 2017Article
- Article
- Cyp2c44 gene disruption exacerbated pulmonary hypertension and heart failure in female but not male mice.Pulmonary circulation · 2016Article
- Arachidonic acid monooxygenase: Genetic and biochemical approaches to physiological/pathophysiological relevance.Prostaglandins & other lipid mediators · 2015Review
- Cytochrome P450 eicosanoids in hypertension and renal disease.Current opinion in nephrology and hypertension · 2015Review
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
Cytochrome P-450, family 2, subfamily c, polypeptide 44 (Cyp2c44) epoxygenase metabolizes arachidonic acid (AA) to epoxyeicosatrienoic acids (EETs) in kidney and vascular tissues. In the present study, we used real-time quantitative PCR techniques to examine the effect of high salt or high K(+) (HK) intake on the expression of Cyp2c44, a major Cyp2c epoxygenase in the mouse kidney. We detected Cyp2c44 in the proximal convoluted tubule, thick ascending limb, distal convoluted tubule (DCT)/connecting tubule (CNT), and collecting duct (CD). A high-salt diet increased the expression of Cyp2c44 in the thick ascending limb and DCT/CNT but not in the proximal convoluted tubule and CD. In contrast, an increase in dietary K(+) intake augmented Cyp2c44 expression only in the DCT/CNT and CD. Neither high salt nor HK intake had a significant effect on the blood pressure (BP) of wild-type mice. However, HK but not high salt intake increased BP in CD-specific, Cyp2c44 conditional knockout (KO) mice. Amiloride, an epithelial Na(+) channel (ENaC) inhibitor, normalized the BP of KO mice fed HK diets, suggesting that lack of Cyp2c44 in the CD enhances ENaC activity and increases Na(+) absorption in KO mice fed HK diets. This notion was supported by metabolic cage experiments demonstrating that renal Na(+) excretion was compromised in KO mice fed HK diets. Also, patch-clamp experiments demonstrated that 11,12-EET, a major Cyp2c44 product, but not AA inhibited ENaC activity in the cortical CD of KO mice. We conclude that Cyp2c44 in the CD is required for preventing the excessive Na(+) absorption induced by HK intake by inhibition of ENaC and facilitating renal Na(+) excretion.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.