keyword
MENU ▼
Read by QxMD icon Read
search

Epoxyeicosatrienoic

keyword
https://www.readbyqxmd.com/read/29615440/inhibition-of-soluble-epoxide-hydrolase-2-ameliorates-diabetic-keratopathy-and-impaired-wound-healing-in-mouse-corneas
#1
Haijing Sun, Patrick Lee, Chenxi Yan, Nan Gao, Jiemei Wang, Xianqun Fan, Fu-Shin Yu
EPHX2 (soluble Epoxide Hydrolase 2, sEH) converts biologically active epoxyeicosatrienoic acids (EETs), anti-inflammatory and pro-fibrinolytic effectors into the less biologically active metabolites, dihydroxyeicostrienoic acids. We sought to characterize the expression and the function of EPHX2 in diabetic corneas and during wound healing. The expression of EPHX2 at both mRNA and protein levels, as well as sEH enzymatic activity, were markedly upregulated in the tissues/cells, including corneal epithelial cells as well as the retina of human type-2, mouse type-1 (STZ-induced) and/or type-2 diabetes...
April 3, 2018: Diabetes
https://www.readbyqxmd.com/read/29588470/soluble-epoxide-hydrolase-inhibition-decreases-reperfusion-injury-after-focal-cerebral-ischemia
#2
Ranran Tu, Jillian Armstrong, Kin Sing Stephen Lee, Bruce D Hammock, Adam Sapirstein, Raymond C Koehler
Epoxyeicosatrienoic acids (EETs) are produced by cytochrome P450 epoxygenases from arachidonic acid, and their rapid metabolism is mainly through soluble epoxide hydrolase (sEH). EETs exert vasodilatory, anti-inflammatory, anti-apoptotic, and pro-angiogenic effects. Administration of sEH inhibitors before or at the onset of stroke is protective, but the effects of post-treatment at reperfusion, when inflammation is augmented, has not been as well studied. We tested the hypothesis that 1-Trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl)urea (TPPU), a potent and highly selective sEH inhibitor, suppresses inflammation and protects the brain when administered at reperfusion...
March 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29580941/increased-epoxyeicosatrienoic-acids-may-be-part-of-a-protective-mechanism-in-human-ulcerative-colitis-with-increased-cyp2j2-and-reduced-soluble-epoxide-hydrolase-expression
#3
Yi-Er Qiu, Jun Qin, Yang Luo, Shao-Lan Qin, Yi-Fei Mu, Ran Cun, Hou-Li Jiang, Jian-Jun Chen, Min-Hao Yu, Ming Zhong
BACKGROUND: Previous preclinical evidence has suggested that the elevation of epoxyeicosatrienoic acids (EETs) derived from the cytochrome P450 (CYP) epoxygenases-dependent metabolism of arachidonic acid has important anti-inflammatory effects. However, the levels of EETs and their synthetic and metabolic enzymes in human ulcerative colitis has not been evaluated. METHOD: To evaluate EETs and the expression of relevant CYP isoforms and the metabolizing enzyme, soluble epoxide hydrolase (sEH), tissue biopsies were collected from 16 pairs of ulcerative colitis patients' tissues and matched with adjacent non-inflamed tissues...
March 23, 2018: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29574653/effect-of-soluble-epoxide-hydrolase-in-hyperoxic-acute-lung-injury-in-mice
#4
Ping-Song Li, Wei Tao, Liu-Qing Yang, Yu-Sheng Shu
Hyperoxic acute lung injury is a serious complication of oxygen therapy that causes high mortality. Inhibition of soluble epoxide hydrolase (sEH) has been reported to have protective effect on lipopolysaccharide-induced acute lung injury (ALI). This study investigates whether sEH plays any role in the pathogenesis of hyperoxic ALI. Wild-type and sEH gene knockout (sEH-/- ) mice were exposed to 100% O2 for 72 h to induce hyperoxic ALI. Hyperoxia caused infiltration of inflammatory cells, elevation of interleukin-1β and interleukin-6 levels, and deterioration of alveolar capillary protein leak as well as wet/dry weight ratio in the lung...
March 24, 2018: Inflammation
https://www.readbyqxmd.com/read/29570510/two-pharmacological-epoxyeicosatrienoic-acid-enhancing-therapies-are-effectively-antihypertensive-and-reduce-the-severity-of-ischemic-arrhythmias-in-rats-with-angiotensin-ii-dependent-hypertension
#5
Luděk Červenka, Zuzana Husková, Libor Kopkan, Soňa Kikerlová, Lenka Sedláková, Zdenka Vaňourková, Petra Alánová, František Kolář, Bruce D Hammock, Sung H Hwang, John D Imig, John R Falck, Janusz Sadowski, Elzbieta Kompanowska-Jezierska, Jan Neckář
OBJECTIVE: We examined the effects of treatment with soluble epoxide hydrolase inhibitor (sEHi) and epoxyeicosatrienoic acids (EETs) analogue (EET-A), given alone or combined, on blood pressure (BP) and ischemia/reperfusion myocardial injury in rats with angiotensin II (ANG II)-dependent hypertension. METHODS: Ren-2 transgenic rats (TGR) were used as a model of ANG II-dependent hypertension and Hannover Sprague-Dawley rats served as controls. Rats were treated for 14 days with sEHi or EET-A and BP was measured by radiotelemetry...
March 22, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29569766/lysosomal-acid-lipase-promotes-cholesterol-ester-metabolism-and-drives-clear-cell-renal-cell-carcinoma-progression
#6
Jun Wang, Mingyue Tan, Jifu Ge, Ping Zhang, Jie Zhong, Le Tao, Qiong Wang, Xuemei Tong, Jianxin Qiu
OBJECTIVES: Clear cell renal cell carcinoma (ccRCC) is characterized histologically by accumulation of cholesterol esters, cholesterol and other neutral lipids. Lysosomal acid lipase (LAL) is a critical enzyme involved in the cholesterol ester metabolism. Here, we sought to determine whether LAL could orchestrate metabolism of cholesterol esters in order to promote ccRCC progression. MATERIALS AND METHODS: Quantitative reverse-transcription PCR and western blots were conducted to assess the expression of LAL in human ccRCC tissues...
March 23, 2018: Cell Proliferation
https://www.readbyqxmd.com/read/29567338/novel-piperidine-derived-amide-seh-inhibitors-as-mediators-of-lipid-metabolism-with-improved-stability
#7
Stevan Pecic, Amir A Zeki, Xiaoming Xu, Gina Y Jin, Shuwei Zhang, Sean Kodani, Marlin Halim, Christophe Morisseau, Bruce D Hammock, Shi-Xian Deng
We have previously identified and reported several potent piperidine-derived amide inhibitors of the human soluble epoxide hydrolase (sEH) enzyme. The inhibition of this enzyme leads to elevated levels of epoxyeicosatrienoic acids (EETs), which are known to possess anti-inflammatory, vasodilatory, and anti-fibrotic effects. Herein, we report the synthesis of 9 analogs of the lead sEH inhibitor and the follow-up structure-activity relationship and liver microsome stability studies. Our findings show that isosteric modifications that lead to significant alterations in the steric and electronic properties at a specific position in the molecule can reduce the efficacy by up to 75-fold...
March 19, 2018: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29529602/combined-inhibition-of-soluble-epoxide-hydrolase-and-renin-angiotensin-system-exhibits-superior-renoprotection-to-renin-angiotensin-system-blockade-in-5-6-nephrectomized-ren-2-transgenic-hypertensive-rats-with-established-chronic-kidney-disease
#8
Věra Čertíková Chábová, Petr Kujal, Petra Škaroupková, Zdeňka Varňourková, Šárka Vacková, Zuzana Husková, Soňa Kikerlová, Janusz Sadowski, Elzbieta Kompanowska-Jezierska, Iwona Baranowska, Sung Hee Hwang, Bruce D Hammock, John D Imig, Vladimír Tesař, Ludek Červenka
BACKGROUND/AIMS: We found recently that increasing renal epoxyeicosatrienoic acids (EETs) levels by blocking soluble epoxide hydrolase (sEH), an enzyme responsible for EETs degradation, shows renoprotective actions and retards the progression of chronic kidney disease (CKD) in Ren-2 transgenic hypertensive rats (TGR) after 5/6 renal ablation (5/6 NX). This prompted us to examine if additional protection is provided when sEH inhibitor is added to the standard renin-angiotensin system (RAS) blockade, specifically in rats with established CKD...
March 6, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29527914/effect-of-angiotensin-converting-enzyme-blockade-alone-or-combined-with-blockade-of-soluble-epoxide-hydrolase-on-the-course-of-congestive-heart-failure-and-occurrence-of-renal-dysfunction-in-ren-2-transgenic-hypertensive-rats-with-aorto-caval-fistula
#9
P Kala, L Sedláková, P Škaroupková, L Kopkan, Z Vaňourková, M Táborský, A Nishiyama, S H Hwang, B D Hammock, J Sadowski, V Melenovský, J D Imig, L Červenka
We showed recently that increasing kidney epoxyeicosatrienoic acids (EETs) by blocking soluble epoxide hydrolase (sEH), an enzyme responsible for EETs degradation, retarded the development of renal dysfunction and progression of aorto-caval fistula(ACF)-induced congestive heart failure (CHF) in Ren-2 transgenic hypertensive rats (TGR). In that study the final survival rate of untreated ACF TGR was only 14 % but increased to 41 % after sEH blockade. Here we examined if sEH inhibition added to renin-angiotensin system (RAS) blockade would further enhance protection against ACF-induced CHF in TGR...
March 12, 2018: Physiological Research
https://www.readbyqxmd.com/read/29526745/integrated-models-of-neurovascular-coupling-and-bold-signals-responses-for-varying-neural-activations
#10
Elshin Mathias, Allanah Kenny, Michael J Plank, Tim David
A state-of-the-art integrated model of neurovascular coupling (NVC) [19, 18, 38] and the BOLD response [47, 48] is presented with the ability to simulate the fMRI BOLD responses due to continuous neuronal spiking, bursting and cortical spreading depression (CSD) along with the underlying complex vascular coupling. Simulated BOLD responses are compared to experimental BOLD signals observed in the rat barrel cortex and in the hippocampus under seizure conditions showing good agreement. Bursting phenomena provides relatively clear BOLD signals as long as the time between bursts is not too short...
March 8, 2018: NeuroImage
https://www.readbyqxmd.com/read/29526491/genetic-deletion-of-12-15-lipoxygenase-promotes-effective-resolution-of-inflammation-following-myocardial-infarction
#11
Vasundhara Kain, Kevin A Ingle, Janusz Kabarowski, Stephen Barnes, Nita A Limdi, Sumanth D Prabhu, Ganesh V Halade
12/15 lipoxygenase (LOX) directs inflammation and lipid remodeling. However, the role of 12/15LOX in post-myocardial infarction (MI) left ventricular remodeling is unclear. To determine the role of 12/15LOX, 8-12 week-old C57BL/6 J wild-type (WT; n = 93) and 12/15LOX-/- (n = 97) mice were subjected to permanent coronary artery ligation and monitored at day (d)1 and d5 post-operatively. Post-MI d28 survival was measured in male and female mice. No-MI surgery mice were maintained as d0 naïve controls...
March 8, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29522918/discovery-of-novel-drug-candidates-for-inhibition-of-soluble-epoxide-hydrolase-of-arachidonic-acid-cascade-pathway-implicated-in-atherosclerosis
#12
Arun Bahadur Gurung, Bishwarjit Mayengbam, Atanu Bhattacharjee
Soluble epoxide hydrolase (sEH), a key enzyme belonging to cytochrome P450 pathway of arachidonic acid cascade is a novel therapeutic drug target against atherosclerosis. The enzyme breaks down epoxyeicosatrienoic acid (EETs) to dihydroxy-eicosatrienoic acids (DHETs) and reduces beneficial cardiovascular properties of EETs. Thus, the present work is aimed at identification of potential leads as sEH inhibitors which will sustain the beneficial properties of EETs in vivo. PubChem and ZINC databases were screened for drug-like compounds based on Lipinski's rule of five and in silico toxicity filters...
March 6, 2018: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29503620/oxidative-stress-and-renal-fibrosis-recent-insights-for-the-development-of-novel-therapeutic-strategies
#13
REVIEW
Wenshan Lv, George W Booz, Fan Fan, Yangang Wang, Richard J Roman
Chronic kidney disease (CKD) is a significant worldwide healthcare problem. Regardless of the initial injury, renal fibrosis is the common final pathway leading to end stage renal disease. Although the underlying mechanisms are not fully defined, evidence indicates that besides inflammation, oxidative stress plays a crucial role in the etiology of renal fibrosis. Oxidative stress results from an imbalance between the production of free radicals that are often increased by inflammation and mitochondrial dysfunction, and reduced anti-oxidant defenses...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29472858/an-integrated-lipidomics-and-phenotype-study-reveals-protective-effect-and-biochemical-mechanism-of-traditionally-used-alisma-orientale-juzepzuk-in-chronic-kidney-disease
#14
Fang Dou, Hua Miao, Jing-Wen Wang, Lin Chen, Ming Wang, Hua Chen, Ai-Dong Wen, Ying-Yong Zhao
Alisma orientale Juzepzuk (AO) is widely used for various diuretic and nephropathic treatments in traditional Chinese medicines (TCM). In a clinical setting, AO is used as both a lipid-lowering and tubular interstitial fibrosis agent. However, the mechanisms of AO for the treatment of renal interstitial fibrosis and abnormal lipid metabolism are not well-understood. In this study, pharmacological and UPLC-HDMS-based lipidomic approaches were employed to investigate the lipid-lowering and tubular interstitial fibrosis effect of AO on rats with adenine-induced chronic kidney disease (CKD)...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29459481/catalytic-activities-of-mammalian-epoxide-hydrolases-with-cis-and-trans-fatty-acid-epoxides-relevant-to-skin-barrier-function
#15
Haruto Yamanashi, William E Boeglin, Christophe Morisseau, Robert W Davis, Gary A Sulikowski, Bruce D Hammock, Alan R Brash
Lipoxygenase-catalyzed oxidation of the essential fatty acid linoleate represents a vital step in construction of the mammalian epidermal permeability barrier. Analysis of epidermal lipids indicates the linoleate is converted to a trihydroxy derivative by hydrolysis of an epoxy-hydroxy precursor. We evaluated different epoxide hydrolase (EH) enzymes in the hydrolysis of skin-relevant fatty acid epoxides and compared the products to those of acid-catalyzed hydrolysis. In the absence of enzyme, exposure to pH 5 or pH 6 at 37 deg C for 30 min hydrolyzed fatty acid allylic epoxyalcohols to four trihydroxy products...
February 19, 2018: Journal of Lipid Research
https://www.readbyqxmd.com/read/29451034/cytochrome-p450-in-the-central-nervous-system-as-a-therapeutic-target-in-neurodegenerative-diseases
#16
Cynthia Navarro-Mabarak, Rafael Camacho-Carranza, Jesús Javier Espinosa-Aguirre
Cytochromes P450 (CYPs) constitute a family of enzymes that can be found in the endoplasmic reticulum (ER), mitochondria or the cell surface of the cells. CYPs are characterized by carrying out the oxidation of organic compounds and they are mainly recognized as mediators of the biotransformation of xenobiotics to polar hydrophilic metabolites that can be eliminated from the organism. However, these enzymes play a key role in many other physiological processes, being involved in diverse indispensable metabolic pathways since they metabolize many endogenous substrates...
February 16, 2018: Drug Metabolism Reviews
https://www.readbyqxmd.com/read/29440332/downregulated-serum-14-15-epoxyeicosatrienoic-acid-is-associated-with-abdominal-aortic-calcification-in-patients-with-primary-aldosteronism
#17
Pinming Liu, Shaoling Zhang, Jingwei Gao, Ying Lin, Guangzi Shi, Wanbing He, Rhian M Touyz, Li Yan, Hui Huang
Patients with primary aldosteronism (PA) have increased risk of target-organ damage, among which vascular calcification is an important indicator of cardiovascular mortality. 14, 15-Epoxyeicosatrienoic acid (14, 15-EET) has been shown to have beneficial effects in vascular remodeling. However, whether 14, 15-EET associates with vascular calcification in PA is unknown. Thus, we aimed to investigate the association between 14, 15-EET and abdominal aortic calcification (AAC) in patients with PA. Sixty-nine patients with PA and 69 controls with essential hypertension, matched for age, sex, and blood pressure, were studied...
February 12, 2018: Hypertension
https://www.readbyqxmd.com/read/29438227/sensitization-of-transient-receptor-potential-vanilloid-4-and-increasing-its-endogenous-ligand-5-6-epoxyeicosatrienoic-acid-in-rats-with-monoiodoacetate-induced-osteoarthritis
#18
Mikie Hinata, Sunao Imai, Takao Sanaki, Junji Tsuchida, Takeshi Yoshioka, Kenichi Higashino, Miyuki Yamamoto, Masayuki Imai, Masahiko Soga, Narumi Horita, Isao Fukuda, Minoru Ikeda, Shoji Yamane, Atsushi Morita, Toshiyuki Kanemasa, Gaku Sakaguchi, Minoru Hasegawa, Masabumi Minami, Yasuhide Morioka
Transient receptor potential vanilloid 4 (TRPV4) receptor modulates pain, and this has been noted in several animal models. However, the involvement of TRPV4 in osteoarthritic (OA) pain remains poorly understood. The present study assessed the functional changes in TRPV4 and the expression of its endogenous ligand 5,6-epoxyeicosatrienoic acid (5,6-EET) in a rat monoiodoacetate (MIA)-induced OA pain model (MIA rats). MIA-treated rats showed reduced grip strength as compared with sham-treated rats, and this loss in function could be recovered by the intra-articular administration of a TRPV4 antagonist (HC067047 or GSK2193874)...
February 9, 2018: Pain
https://www.readbyqxmd.com/read/29433675/plant-natural-product-plumbagin-presents-potent-inhibitory-effect-on-human-cytochrome-p450-2j2-enzyme
#19
Jian Lu, Daozhi Liu, Xiaojing Zhou, Ang Chen, Zhenran Jiang, Xiyun Ye, Mingyao Liu, Xin Wang
BACKGROUND: Cytochrome P450 2J2 (CYP2J2) is not only highly expressed in many kinds of human tumors, but also promotes tumor cell growth via regulating the metabolism of arachidonic acids. CYP2J2 inhibitors can significantly reduce proliferation, migration and promote apoptosis of tumor cells by inhibiting epoxyeicosatrienoic acids (EETs) biosynthesis. Therefore screening CYP2J2 inhibitors is a significant way for the development of anti-cancer drug. PURPOSE: The aim of this study was to identify a new CYP2J2 inhibitor from fifty natural compounds obtained from plants...
January 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29427791/cyp2j2-derived-eets-attenuated-ethanol-induced-myocardial-dysfunction-through-inducing-autophagy-and-reducing-apoptosis
#20
Chi Zhou, Jin Huang, Qing Li, Chenao Zhan, Xizhen Xu, Xu Zhang, Ding Ai, Yi Zhu, Zheng Wen, Dao Wen Wang
Chronic excessive drinking leads to myocardial contractile dysfunction and dilated cardiomyopathy, where ethanol toxicity plays an essential role. Cytochrome P450 (CYP) epoxygenases metabolize arachidonic acids to form epoxyeicosatrienoic acids (EETs), which exert beneficial roles in the cardiovascular system, but their role in alcoholic cardiomyopathy is elusive. This study was designed to evaluate the effects and mechanisms of CYP2J2 gene delivery on ethanol-induced myocardial dysfunction with focus on autophagy and apoptosis...
February 7, 2018: Free Radical Biology & Medicine
keyword
keyword
45696
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"