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Endothelin-1

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https://www.readbyqxmd.com/read/28073175/post-reperfusion-microcirculatory-derangements-after-liver-transplantation-relationship-to-hemodynamics-serum-mediators-and-outcome
#1
Carlo Pulitano, David Joseph, Charbel Sandroussi, Deborah Verran, Phong Ho, Ashe Debiasio, Adriano Luongo, Geoffrey W McCaughan, Nicholas Shackel, Michael Crawford
INTRODUCTION: Despite the growing data supporting the role of microcirculation in regulating liver function, little of this knowledge has been translated into clinical practice. The aim of this study is to quantify hepatic microcirculation in-vivo using sidestream dark-field (SDF) imaging and correlate these finding with hepatic blood flow, hemodynamic parameters, and soluble mediators. METHODS: Post-reperfusion hepatic microcirculation was assessed using SDF imaging...
January 10, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28068281/pathophysiological-role-of-adiponectin-leptin-and-asymmetric-dimethylarginine-in-the-process-of-atherosclerosis
#2
Daniela Iv Koleva, Maria M Orbetzova, Julia G Nikolova, Tanya I Deneva
Adipose tissue is recognized as a rich source of proinflammatory mediators that may directly contribute to vascular injury, insulin resistance, and atherogenesis. Many studies have shown that adiponectin has antiatherogenic and anti-inflammatory properties. Adiponectin acts not only as a factor increasing insulin sensitivity, and the protective effect may result from its ability to suppress production of proinflammatory cytokines. It negatively regulates the expression of TNF-alpha and C-reactive protein (CRP) in adipose tissue; reduces expression of vascular and intracellular adhesion molecules (VCAM-1, ICAM-1), E-selectin, interleukin-8 (IL-8)...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28064357/ischemic-stroke-experimental-models-and-reality
#3
REVIEW
Clemens J Sommer
The vast majority of cerebral stroke cases are caused by transient or permanent occlusion of a cerebral blood vessel ("ischemic stroke") eventually leading to brain infarction. The final infarct size and the neurological outcome depend on a multitude of factors such as the duration and severity of ischemia, the existence of collateral systems and an adequate systemic blood pressure, etiology and localization of the infarct, but also on age, sex, comorbidities with the respective multimedication and genetic background...
January 7, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28060893/positioning-of-tacrolimus-for-the-treatment-of-diabetic-nephropathy-based-on-computational-network-analysis
#4
Constantin Aschauer, Paul Perco, Andreas Heinzel, Judith Sunzenauer, Rainer Oberbauer
OBJECTIVE: To evaluate tacrolimus as therapeutic option for diabetic nephropathy (DN) based on molecular profile and network-based molecular model comparisons. MATERIALS AND METHODS: We generated molecular models representing pathophysiological mechanisms of DN and tacrolimus mechanism of action (MoA) based on literature derived data and transcriptomics datasets. Shared enriched molecular pathways were identified based on both model datasets. A newly generated transcriptomics dataset studying the effect of tacrolimus on mesangial cells in vitro was added to identify mechanisms in DN pathophysiology...
2017: PloS One
https://www.readbyqxmd.com/read/28059438/optimized-method-for-isolating-highly-purified-and-functional-porcine-aortic-endothelial-and-smooth-muscle-cells
#5
Farideh Beigi, Mitalben Patel, Marco A Morales-Garza, Caitlin Winebrenner, Andrea S Gobin, Eric Chau, Luiz C Sampaio, Doris A Taylor
BACKGROUND: Numerous protocols exist for isolating aortic endothelial and smooth muscle cells from small animals. However, establishing a protocol for isolating pure cell populations from large animal vessels that are more elastic has been challenging. We developed a simple sequential enzymatic approach to isolate highly purified populations of porcine aortic endothelial and smooth muscle cells. METHODS: The lumen of a porcine aorta was filled with 25 U/mL dispase solution and incubated at 37°C to dissociate the endothelial cells...
January 6, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28057852/endothelin-1-and-et-receptors-impair-left-ventricular-function-by-mediated-coronary-arteries-dysfunction-in-chronic-intermittent-hypoxia-rats
#6
Jin-Wei Wang, Ai-Ying Li, Qiu-Hong Guo, Ya-Jing Guo, James W Weiss, En-Sheng Ji
Obstructive sleep apnea (OSA) results in cardiac dysfunction and vascular endothelium injury. Chronic intermittent hypoxia (CIH), the main characteristic of OSAS, is considered to be mainly responsible for cardiovascular system impairment. This study is aimed to evaluate the role of endothelin-1(ET-1) system in coronary injury and cardiac dysfunction in CIH rats. In our study, Sprague-Dawley rats were exposed to CIH (FiO2 9% for 1.5 min, repeated every 3 min for 8 h/d, 7 days/week for 3 weeks). After 3 weeks, the left ventricular developed pressure (LVDP) and coronary resistance (CR) were measured with the langendorff mode in isolated hearts...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28049937/neurohumoral-and-endothelial-responses-to-heated-water-based-exercise-in-resistant-hypertensive-patients
#7
Lais Galvani de Barros Cruz, Edimar Alcides Bocchi, Guido Grassi, Guilherme Veiga Guimaraes
BACKGROUND: The neurohumoral and endothelial responses to the blood pressure (BP) lowering effects of heated water-based exercise (HEx) in resistant hypertension (HT) patients remain undefined.Methods and Results:We investigated these in 44 true resistant HT patients (age 53.3±0.9 years, mean±SEM). They were randomized and allocated to 2 groups, 28 to a HEx training protocol, which consisted of callisthenic exercises and walking in a heated pool for 1 h, three times weekly for 12 weeks and 16 patients to a control group maintaining their habitual activities...
December 29, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28049696/endothelium-derived-c-type-natriuretic-peptide-contributes-to-blood-pressure-regulation-by-maintaining-endothelial-integrity
#8
Kazuhiro Nakao, Koichiro Kuwahara, Toshio Nishikimi, Yasuaki Nakagawa, Hideyuki Kinoshita, Takeya Minami, Yoshihiro Kuwabara, Chinatsu Yamada, Yuko Yamada, Takeshi Tokudome, Chiaki Nagai-Okatani, Naoto Minamino, Yoko M Nakao, Shinji Yasuno, Kenji Ueshima, Masakatsu Sone, Takeshi Kimura, Kenji Kangawa, Kazuwa Nakao
We previously reported the secretion of C-type natriuretic peptide (CNP) from vascular endothelial cells and proposed the existence of a vascular natriuretic peptide system composed of endothelial CNP and smooth muscle guanylyl cyclase-B (GC-B), the CNP receptor, and involved in the regulation of vascular tone, remodeling, and regeneration. In this study, we assessed the functional significance of this system in the regulation of blood pressure in vivo using vascular endothelial cell-specific CNP knockout and vascular smooth muscle cell-specific GC-B knockout mice...
January 3, 2017: Hypertension
https://www.readbyqxmd.com/read/28039519/adipokines-a-possible-contribution-to-vascular-and-bone-remodeling-in-idiopathic-pulmonary-arterial-hypertension
#9
Evgenia A Kochetkova, Ludmila G Ugai, Yuliya V Maistrovskaia, Vera A Nevzorova
Osteoporosis is a major comorbidity of cardio-respiratory diseases, but the mechanistic links between pulmonary arterial hypertension and bone remain elusive. The purpose of the stud was to evaluate serum adipokines and endothelin-1 (ET-1) levels in the patients with idiopathic pulmonary arterial hypertension (IPAH) NYHA class III-IV and to determine its associations with bone mineral density (BMD). Pulmonary and hemodynamic parameters, BMD Z-scores at the lumbar spine (LS) and femoral neck (FN), serum leptin, adiponectin, visfatin and endothelin-1 (ET-1), were evaluated in 32 patients with IPAH NYHA class III-IV and 30 healthy volunteers...
December 30, 2016: Calcified Tissue International
https://www.readbyqxmd.com/read/28039404/free-radical-scavenging-decreases-endothelin-1-excretion-and-glomerular-albumin-permeability-during-type-1-diabetes
#10
Mohamed A Saleh, Carmen De Miguel, David I Stevens, Pamela K Carmines, David M Pollock, Jennifer S Pollock
Increased renal endothelin-1 (ET-1) production and an ETA receptor-dependent increase in glomerular albumin permeability (Palb) accompany type 1 diabetes mellitus (T1D). We hypothesized that T1D-induced oxidative stress contributes to renal ET-1 production and glomerular Palb Male rats with streptozotocin-induced T1D were provided free access to drinking water without additives (T1D rats) or containing the free radical scavenger tempol (1 mmol/L; T1D+Tempol). After 3 weeks, T1D+Tempol rats displayed lower urinary excretion of thiobarbituric acid reactive substances and glomerular superoxide production (dihydroethidium staining) compared to T1D rats...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/28039024/effects-of-age-and-caloric-restriction-in-the-vascular-response-of-renal-arteries-to-endothelin-1-in-rats
#11
Sara Amor, Angel Luis García-Villalón, Carmen Rubio, Jose Ma Carrascosa, Luis Monge, Nuria Fernández, Beatriz Martín-Carro, Miriam Granado
Cardiovascular alterations are the most prevalent cause of impaired physiological function in aged individuals with kidney being one the most affected organs. Aging-induced alterations in renal circulation are associated with a decrease in endothelium-derived relaxing factors such as nitric oxide (NO) and with an increase in contracting factors such as endothelin-1(ET-1). As caloric restriction (CR) exerts beneficial effects preventing some of the aging-induced alterations in cardiovascular system, the aim of this study was to analyze the effects of age and caloric restriction in the vascular response of renal arteries to ET-1 in aged rats...
December 27, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/28038820/plasma-big-endothelin-1-levels-at-admission-and-future-cardiovascular-outcomes-a-cohort-study-in-patients-with-stable-coronary-artery-disease
#12
Bing-Yang Zhou, Yuan-Lin Guo, Na-Qiong Wu, Cheng-Gang Zhu, Ying Gao, Ping Qing, Xiao-Lin Li, Yao Wang, Qian Dong, Geng Liu, Rui Xia Xu, Chuan-Jue Cui, Jing Sun, Jian-Jun Li
BACKGROUND: Big endothelin-1 (ET-1) has been proposed as a novel prognostic indicator of acute coronary syndrome, while its predicting role of cardiovascular outcomes in patients with stable coronary artery disease (CAD) is unclear. METHODS AND RESULTS: A total of 3154 consecutive patients with stable CAD were enrolled and followed up for 24months. The outcomes included all-cause death, non-fatal myocardial infarction, stroke and unplanned revascularization (percutaneous coronary intervention and coronary artery bypass grafting)...
December 21, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28035219/the-role-of-polymorphism-of-interleukin-2-10-13-and-tnf-%C3%AE-genes-in-cutaneous-t-cell-lymphoma-pathogenesis
#13
Boguslaw Nedoszytko, Berenika Olszewska, Jadwiga Roszkiewicz, Jolanta Glen, Monika Zabłotna, Hanna Ługowska-Umer, Roman Nowicki, Małgorzata Sokołowska-Wojdyło
INTRODUCTION: As the pathogenesis of cutaneous T-cell lymphomas (CTCL) is not fully understood, inherited gene polymorphisms are considered to play a role in the development of lymphomas. AIM: To investigate whether certain gene polymorphisms might be involved in the development of CTCL. MATERIAL AND METHODS: In the case-control study we compared the frequency of nine selected single nucleotide polymorphisms (SNP) of seven genes (rs1800587/-889 C/T of interleukin (IL)-1α, rs2069762/-330G/T) and rs2069763/+166G/T of IL-2, rs1800925/-1112 C/T of IL-13, rs1800896/-1082 A/G of IL-10, rs4073/-251 A/T of IL-8, rs5370/K198N, rs180054/-1370T/G of endothelin-1 and rs1800629/-308 G/A of TNF-α) in 43 CTCL and Polish cases using the amplification refractory mutation system polymerase chain reaction method...
December 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/28029743/statins-ameliorate-pulmonary-hypertension-secondary-to-left-ventricular-dysfunction-through-the-rho-kinase-pathway-and-nadph-oxidase
#14
I-Chen Chen, Mian-Shin Tan, Bin-Nan Wu, Chee-Yin Chai, Jwu-Lai Yeh, Shah-Hwa Chou, Ing-Jun Chen, Zen-Kong Dai
BACKGROUND: Pulmonary hypertension (PH) is a devastating disorder, for which no therapy is curative. It has been reported that pulmonary vascular remodeling, associated with increasing mean pulmonary arterial pressure and upregulated expression of endothelial nitric oxide synthase (eNOS), endothelin-1 (ET-1), RhoA/RhoH-kinase results in the development of PH. Oxidative stress and the RhoA/Rho-kinase pathway are also thought to be involved in the pathophysiology of PH. Statins are 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (HMG-CoA reductase inhibitors) with pleiotropic effects and are potential agents for the treatment of PH...
December 28, 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28028193/smooth-muscle-endothelin-b-receptors-regulate-blood-pressure-but-not-vascular-function-or-neointimal-remodeling
#15
Eileen Miller, Alicja Czopek, Karolina M Duthie, Nicholas S Kirkby, Elisabeth E Fransen van de Putte, Sibylle Christen, Robert A Kimmitt, Rebecca Moorhouse, Raphael F P Castellan, Yuri V Kotelevtsev, Rhoda E Kuc, Anthony P Davenport, Neeraj Dhaun, David J Webb, Patrick W F Hadoke
The role of smooth muscle endothelinB (ETB) receptors in regulating vascular function, blood pressure (BP), and neointimal remodeling has not been established. Selective knockout mice were generated to address the hypothesis that loss of smooth muscle ETB receptors would reduce BP, alter vascular contractility, and inhibit neointimal remodeling. ETB receptors were selectively deleted from smooth muscle by crossing floxed ETB mice with those expressing cre-recombinase controlled by the transgelin promoter. Functional consequences of ETB deletion were assessed using myography...
December 27, 2016: Hypertension
https://www.readbyqxmd.com/read/28025386/tweak-up-regulates-endothelin-1-system-in-mouse-and-human-endothelial-cells
#16
Patricia Martínez-Miguel, Diana Medrano-Andrés, Mercedes Griera-Merino, Alberto Ortiz, Manuel Rodríguez-Puyol, Diego Rodríguez-Puyol, Susana López-Ongil
: TNF-like weak inducer of apoptosis (TWEAK) is a member of TNF superfamily; it has different biological functions such as inflammation, angiogenesis, proliferation and apoptosis. TWEAK and Fn14 are expressed in different cell types, including endothelial and smooth muscle cells. Despite their presence in endothelial cells, the effect of TWEAK on endothelial function is incompletely defined. AIM: To analyze the ability of TWEAK to modify the endothelin system, particularly ET-1 and ECE-1, studying the intracellular mechanisms implied...
December 25, 2016: Cardiovascular Research
https://www.readbyqxmd.com/read/28013061/voltage-and-receptor-mediated-activation-of-a-non-selective-cation-channel-in-rat-carotid-body-glomus-cells
#17
Jiaju Wang, James O Hogan, Donghee Kim
A recent study showed that hypoxia activates a Ca(2+)-sensitive, Na(+)-permeable non-selective cation channel (NSC) in carotid body glomus cells. We studied the effects of mitochondrial inhibitors that increase Ca(2+) influx via Ca(2+) channel (Cav), and receptor agonists that release Ca(2+) from endoplasmic reticulum (ER) on NSC. Mitochondrial inhibitors (NaCN, FCCP, H2S, NO) elevated [Ca(2+)]i and activated NSC. Angiotensin II and acetylcholine that elevate [Ca(2+)]i via the Gq-IP3 pathway activated NSC. However, endothelin-1 (Gq) and 5-HT (Gq) showed little or no effect on [Ca(2+)]i and did not activate NSC...
December 21, 2016: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28012855/prostanoids-counterbalance-the-synergism-between-endothelin-1-and-angiotensin-ii-in-mesenteric-veins-of-trained-rats
#18
Agnaldo Bruno Chies, Priscilla Bianca de Oliveira, Patrícia de Souza Rossignoli, Rafaela de Fátima Ferreira Baptista, Roger William de Lábio, Spencer Luiz Marques Payão
Exercise-induced adaptations of the modulating mechanisms that influence the angiotensin (Ang II) responses assume different features depending on the venous bed. In femoral veins, exercise mobilizes vasodilator prostanoids to cooperate with NO in order to maintain reduced Ang II responses. On the other hand, exercise's influence on the Ang II responses in veins that drain blood from the mesenteric region has been poorly described. Therefore, the present study aimed to identify the effects of a single bout of exercise, as well as exercise training, on the Ang II responses in mesenteric veins...
December 21, 2016: Peptides
https://www.readbyqxmd.com/read/28011403/cyanidin-3-o-glucoside-ameliorates-palmitate-induced-insulin-resistance-by-modulating-irs-1-phosphorylation-and-release-of-endothelial-derived-vasoactive-factors
#19
Deborah Fratantonio, Francesco Cimino, Maria Sofia Molonia, Daniela Ferrari, Antonella Saija, Fabio Virgili, Antonio Speciale
Increased plasma levels of free fatty acids, including palmitic acid (PA), cause insulin resistance in endothelium characterized by a decreased synthesis of insulin-mediated vasodilator nitric oxide (NO), and by an increased production of the vasoconstrictor protein, endothelin-1. Several in vitro and in vivo studies suggest that anthocyanins, natural phenols commonly present in food and vegetables from Mediterranean Diet, exert significant cardiovascular health-promoting activities. These effects are possibly mediated by a positive regulation of the transcription factor Nrf2 and activation of cellular antioxidant and cytoprotective genes...
December 21, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28008249/a-novel-hydrodynamic-approach-of-drag-reducing-polymers-to-improve-left-ventricular-hypertrophy-and-aortic-remodeling-in-spontaneously-hypertensive-rats
#20
Xinlu Zhang, Xu Wang, Feng Hu, Boda Zhou, Hai-Bin Chen, Daogang Zha, Yili Liu, Yansong Guo, Lemin Zheng, Jiancheng Xiu
Drag-reducing polymers (DRPs), when added in minute concentrations, have been shown to decrease peripheral vascular resistance. In this study, the effect of DRPs on the hypertension-induced left ventricular hypertrophy and aortic remodeling was evaluated in spontaneously hypertensive rats (SHR). Male SHR and age-matched Wistar rats were divided into four groups and received intravenous injection of normal saline (NS) or DRPs. Body weight (BW), heart rate (HR) and systolic blood pressure (SBP) were measured...
2016: International Journal of Nanomedicine
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