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ET-1 AND blood pressure

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https://www.readbyqxmd.com/read/28183819/a-chronic-physical-activity-treatment-in-obese-rats-normalizes-the-contributions-of-et-1-and-no-to-insulin-mediated-posterior-cerebral-artery-vasodilation
#1
T Dylan Olver, Matthew W McDonald, Diana Klakotskaia, Rachel A Richardson, Jeffrey L Jasperse, C W James Melling, Todd R Schachtman, Hsiao T Yang, Craig A Emter, M Harold Laughlin
This study tested the hypotheses that obesity-induced decrements in insulin-stimulated cerebrovascular vasodilation would be normalized with acute endothelin-1a receptor antagonism, and treatment with a physical activity intervention restores vasoreactivity to insulin through augmented nitric oxide synthase (NOS)-dependent dilation. Otsuka Long-Evans Tokushima Fatty rats were divided into the following groups; 20-wk old food-controlled (CON-20); 20-wk old free-food access (model of obesity, OB-20); 40-wk old food-controlled (CON-40); 40-wk old free-food access (OB-40); and 40-wk old free-food access+RUN (RUN-40; wheel-running access from 20-40 wk)...
February 9, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28179254/a-mathematical-model-of-the-rat-kidney-k-induced-natriuresis
#2
Alan M Weinstein
A model of the rat nephron (Am. J. Physiol. 308:F1098, 2015) has been extended with addition of medullary vasculature. Blood vessels contain solutes from the nephron model, plus additional species from the model of Atherton et al. (Am. J. Physiol. 247:F61, 1984), representing hemoglobin buffering. In contrast to prior models of the urine concentrating mechanism, reflection coefficients for DVR are near zero. Model unknowns are initial proximal tubule pressures and flows, connecting tubule pressure, and medullary interstitial pressures and concentrations...
February 8, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28125902/effectiveness-and-content-analysis-of-interventions-to-enhance-medication-adherence-and-blood-pressure-control-in-hypertension-a-systematic-review-and-meta-analysis
#3
Eimear C Morrissey, Hannah Durand, Robby Nieuwlaat, Tamara Navarro, R Brian Haynes, Jane C Walsh, Gerard J Molloy
OBJECTIVE: The objective of this systematic review is to evaluate the effectiveness of medication adherence interventions on blood pressure control in hypertensive patients. In addition, we aim to explore what barriers and facilitators in the interventions may have been targeted and how these might be related to the effect size on blood pressure (BP). DESIGN: This review is a hypertension-specific update to the previous Cochrane Review by Nieuwlaat et al. ( 2014 ) on interventions to enhance medication adherence...
January 27, 2017: Psychology & Health
https://www.readbyqxmd.com/read/28116728/isolation-and-culture-of-endothelial-cells-from-large-vessels
#4
Augusto C Montezano, Karla B Neves, Rheure A M Lopes, Francisco Rios
The endothelium, which is at the interface between circulating blood and the vascular wall, comprises a simple squamous layer of cells that lines the inner surface of all blood vessels. Endothelial cells are highly metabolically active and play an important role in many physiological functions, including control of vasomotor tone, blood cell trafficking, vascular permeability, and maintenance of vascular integrity (Mensah, Vascul Pharmacol 46(5):310-314, 2007; Yetik-Anacak and Catravas, Vascul Pharmacol 45(5):268-276, 2006)...
2017: Methods in Molecular Biology
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
#5
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
https://www.readbyqxmd.com/read/27990358/neuropathy-optic-glaucomatosa-induced-by-systemic-hypertension-through-activation-endothelin-1-signaling-pathway-in-central-retinal-artery-in-rats
#6
Seskoati Prayitnaningsih, Hidayat Sujuti, Maksum Effendi, Aulia Abdullah, Nanda Wahyu Anandita, Febriani Yohana, Nur Permatasari, Mohamad Aris Widodo
AIM: To evaluate effect of hypertension on retinal ganglion cell (RGC) apoptosis, intraocular pressure (IOP), and the activation of endothelin-1 (ET-1) signaling pathway in central retinal artery (CRA) in rats. METHODS: The experimental study was performed on 20 male Sprague Dawley rats that were divided into control group, and hypertension groups. The hypertension was induced by subcutaneous deoxycorticoacetate (DOCA) 10 mg/kg twice a week and administered 0.9% NaCl solution daily for 2, 6, and 10wk...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27941230/the-possible-role-of-the-vagal-nervous-system-in-the-recovery-of-the-blood-pressure-control-after-cardiac-arrest-a-porcine-model-study
#7
Mario Lavanga, Giuseppe Baselli, Francesca Fumagalli, Giuseppe Ristagno, Manuela Ferrario
Previous studies have proved that the baroreceptor reflex (baroreflex) control of heart rate can be used for stratification of post-infarction population and, in general, cardiovascular disease populations. Many methods have been proposed to estimate the so-called baroreflex sensitivity (BRS) expressed as ms mmhg(-1). Most of the studies that exploit BRS focus mainly on acute myocardial infarction (AMI) and there are no important works that investigate the role of BRS immediately after cardiac arrest (CA). The present work is a continuation of the published work of Ristagno et al (2014 Shock 41 72-8)...
January 2017: Physiological Measurement
https://www.readbyqxmd.com/read/27917264/systemic-to-pulmonary-artery-pressure-ratio-as-a-predictor-of-patient-outcome-following-liver-transplantation
#8
Annette Rebel, Dung Nguyen, Brooke Bauer, Paul A Sloan, Amy DiLorenzo, Zaki-Udin Hassan
AIM: To assess the value of the mean systemic-to-pulmonary artery pressure (MAP/mPAP) ratio for predicting outcomes following orthotopic liver transplant (OLT). METHODS: A retrospective data analysis was performed and data (mean arterial blood pressure, mean pulmonary artery pressure and Cardiac Index) were collected at several points during OLT. Outcomes evaluated were duration of postoperative endotracheal intubation [ET; minutes after intensive care unit (ICU) arrival], length of ICU stay, total hospitalization and frequency of immediate postoperative complications...
November 18, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27914527/prophylactic-effects-of-alkaloids-from-ba-lotus-seeds-on-l-nna-induced-hypertension-in-mice
#9
Peng Sun, Kai Zhu, Cun Wang, Wei-Wei Liu, De-Guang Peng, Xin Zhao
Alkaloids from Ba lotus seeds (ABLS) are a kind of important functional compounds in lotus seeds. The present study was designed to determine its hypertension prophylactic effects in the L-NNA-induced mouse hypertension model. The mice were treated with ABLS, the serum and tissues levels of NO, MDA, ET-1, VEGF, and CGRP were determined using the experimental kits, the mRNA levels of various genes in the heart muscle and blood vessel tissues were further determined by RT-PCR assay. ABLS could reduce the systolic blood pressure (SBP), mean blood pressure (MBP), and diastolic blood pressure (DBP), compared to that of the model control group...
November 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27903510/vitamin-d-supplementation-reduces-some-at1-aa-induced-downstream-targets-implicated-in-preeclampsia-including-hypertension
#10
Jessica L Faulkner, Lorena M Amaral, Denise C Cornelius, Mark W Cunningham, Tarek Ibrahim, Autumn Heep, Nathan Campbell, Nathan Usry, Kedra Wallace, Florian Herse, Ralf Dechend, Babbette LaMarca
Autoantibodies to the ANG II type I receptor (AT1-AA) are associated with preeclampsia (PE). We found that vitamin D supplementation reduced AT1-AA and blood pressure (MAP) in the RUPP rat model of PE. However, it was undetermined whether the decrease in AT1-AA was the mechanism whereby vitamin D lowered MAP or if it were through factors downstream of AT1-AA. Uterine artery resistance index, placental ET-1, and soluble FMS-like tyrosine kinase-1 are increased with AT1-AA-induced hypertension and are considered markers of PE in pregnant women...
January 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27894808/protective-effect-of-betulinic-acid-on-early-atherosclerosis-in-diabetic-apolipoprotein-e-gene-knockout-mice
#11
Jung Joo Yoon, Yun Jung Lee, Byung Hyuk Han, Eun Sik Choi, Min Chul Kho, Ji Hun Park, You Mee Ahn, Hye Yoom Kim, Dae Gill Kang, Ho Sub Lee
Atherosclerosis, a chronic and progressive disease, is a leading cause of endothelial dysfunction, diabetes mellitus, hypertension, and hypercholesterolemia. Betulinic acid (BA), a pentacyclic triterpene, has been reported to have a variety of biological effects, including anti-inflammatory and immunomodulatory properties. This study was designed to determine whether BA could prevent atherosclerosis in diabetic apolipoprotein-E gene knockout (ApoE KO) mice. The mice were treated with BA for 12 weeks to examine its beneficial effects on atherosclerosis in ApoE KO mice...
November 26, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27884622/exercise-modulates-the-aortic-renin-angiotensin-system-independently-of-estrogen-therapy-in-ovariectomized-hypertensive-rats
#12
Patrick W Endlich, Erick R G Claudio, Leandro C F Lima, Rogério F Ribeiro Júnior, Antonio A B Peluso, Ivanita Stefanon, Nazaré S Bissoli, Virginia S Lemos, Robson A S Dos Santos, Glaucia R de Abreu
The renin-angiotensin-system is an important component of cardiovascular control and is up-regulated under various conditions, including hypertension and menopause. The aim of this study was to evaluate the effects of swimming training and estrogen therapy (ET) on angiotensin-II (ANG II)-induced vasoconstriction and angiotensin-(1-7) [ANG-(1-7)]-induced vasorelaxation in aortic rings from ovariectomized spontaneously hypertensive rats. Animals were divided into Sham (SH), Ovariectomized (OVX), Ovariectomized treated with E2 (OE2), Ovariectomized plus swimming (OSW) and Ovariectomized treated with E2 plus swimming (OE2+SW) groups...
January 2017: Peptides
https://www.readbyqxmd.com/read/27866193/mixed-aqueous-extract-of-salvia-miltiorrhiza-reduces-blood-pressure-through-inhibition-of-vascular-remodelling-and-oxidative-stress-in-spontaneously-hypertensive-rats
#13
Jing Zhang, Sheng Jun An, Jun Qiu Fu, Pei Liu, Tie Mei Shao, Manli Li, Xue Li, Zhan Jiao, Xi Qing Chai
BACKGROUND/AIMS: Salvia miltiorrhiza (SM) contains four major aqueous active ingredients, which have been isolated, purified and identified as danshensu (DSS), salvianolic acid A (Sal-A), salvianolic acid B (Sal-B) and protocatechuic aldehyde (PAL), totally abbreviated as SABP. Although SM is often used to treat various cardiovascular diseases in traditional Chinese medicine, the efficacy and function of optimal compatibility ratio of SM's active ingredients (SABP) in the prevention and treatment of cardiovascular diseases remain uncertain...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27860068/effect-of-osa-on-hypoxic-and-inflammatory-markers-during-cpap-withdrawal-further-evidence-from-three-randomized-control-trials
#14
Chris D Turnbull, Valentina A Rossi, Peter Santer, Esther I Schwarz, John R Stradling, Nayia Petousi, Malcolm Kohler
BACKGROUND AND OBJECTIVE: Obstructive sleep apnoea (OSA) is associated with cardiovascular disease. Intermittent hypoxia, endothelial dysfunction and adipose tissue-mediated inflammation have all been linked to cardiovascular disease in OSA. We therefore explored the effect of OSA on relevant associated blood markers: adrenomedullin (ADM), endocan, endothelin-1 (ET-1), resistin and vascular endothelial growth factor (VEGF). METHODS: Patients with OSA, established on and compliant with continuous positive airways pressure (CPAP) therapy for >1 year were included from three randomized controlled trials, conducted at two centres...
November 18, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27832660/global-overexpression-of-et-1-decreases-blood-pressure-a-systematic-review-and-meta-analysis-of-et-1-transgenic-mice
#15
Yong Ping Lu, Oleg Tsuprykov, Nicolas Vignon-Zellweger, Susi Heiden, Berthold Hocher
BACKGROUND/AIMS: ET-1 has independent effects on blood pressure regulation in vivo, it is involved in tubular water and salt excretion, promotes constriction of smooth muscle cells, modulates sympathetic nerve activity, and activates the liberation of nitric oxide. To determine the net effect of these partially counteracting mechanisms on blood pressure, a systematic meta-analysis was performed. METHODS: Based on the principles of Cochrane systematic reviews, we searched in major literature databases - MEDLINE (PubMed), Embase, Google Scholar, and the China Biological Medicine Database (CBM-disc) - for articles relevant to the topic of the blood pressure phenotype of endothelin-1 transgenic (ET-1+/+) mice from January 1, 1988 to March 31, 2016...
2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27810862/dual-endothelin-a-endothelin-b-receptor-blockade-and-cardiac-remodeling-in-heart-failure-with-preserved-ejection-fraction
#16
Maria Valero-Munoz, Shanpeng Li, Richard M Wilson, Batbold Boldbaatar, Marc Iglarz, Flora Sam
BACKGROUND: Despite the increasing prevalence of heart failure with preserved ejection fraction (HFpEF) in humans, there remains no evidence-based therapies for HFpEF. Endothelin-1 (ET-1) antagonists are a possibility because elevated ET-1 levels are associated with adverse cardiovascular effects, such as arterial and pulmonary vasoconstriction, impaired left ventricular (LV) relaxation, and stimulation of LV hypertrophy. LV hypertrophy is a common phenotype in HFpEF, particularly when associated with hypertension...
November 2016: Circulation. Heart Failure
https://www.readbyqxmd.com/read/27787379/elevated-plasma-migration-inhibitory-factor-in-hypertension-hyperlipidemia-patients-correlates-with-impaired-endothelial-function
#17
Boda Zhou, Chuan Ren, Lingyun Zu, Lemin Zheng, Lijun Guo, Wei Gao
Migration inhibitory factor (MIF) has been shown to be critical in the pathology of early artherosclerosis; this article aim to investigate the plasma levels of MIF in hypertension plus hyperlipidemia patients.A total of 39 hypertension plus hyperlipidemia patients without any previous treatment were enrolled (HTN-HLP). Twenty-five healthy subjects were enrolled as the healthy control group (HEALTHY). Plasma MIF was measured by ELISA; laboratory and clinical characteristics were analyzed. HUVECs were treated with pooled plasma from HTN-HLP and HEALTHY groups, and the protein levels of adhesion molecules VCAM-1 and ICAM-1 were determined by ELISA...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27779565/combined-exercise-reduces-arterial-stiffness-blood-pressure-and-blood-markers-for-cardiovascular-risk-in-postmenopausal-women-with-hypertension
#18
Won-Mok Son, Ki-Dong Sung, Jae-Min Cho, Song-Young Park
OBJECTIVE: Postmenopausal women exhibit elevated brachial-ankle pulse wave velocity (baPWV), an indicator of arterial stiffness, which is associated with an increased risk of cardiovascular events and mortality. The purpose of this study is to examine the impact of combined resistance and aerobic exercise training on baPWV, blood pressure (BP), and cardiovascular fitness in postmenopausal women with stage 1 hypertension. METHODS: Twenty postmenopausal women (age, 75 ± 2 y; systolic BP, 152 ± 2 mm Hg, diastolic BP, 95 ± 3 mm Hg) were randomly assigned to a "no-exercise" (CON, n = 10) or combined exercise (EX, n = 10) group...
October 24, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27777505/plasma-endothelin-1-and-single-nucleotide-polymorphisms-of-endothelin-1-and-endothelin-type-a-receptor-genes-as-risk-factors-for-normal-tension-glaucoma
#19
Ewa Kosior-Jarecka, Dominika Wróbel-Dudzińska, Urszula Łukasik, Tin Aung, Chiea Chuen Khor, Janusz Kocki, Tomasz Żarnowski
PURPOSE: The purpose of this study was to determine whether four single nucleotide polymorphisms (SNPs) of endothelin and endothelin receptor type A genes can constitute a risk factor for normal tension glaucoma (NTG) and high tension glaucoma (HTG). METHODS: The study included 160 patients with NTG, 124 patients with HTG, and 165 healthy controls. To analyze the frequency of polymorphic variants of the endothelin EDN gene (K198N) and the endothelin receptor type A gene EDN RA (C1222T, C70G, G231A), DNA was isolated from peripheral blood, and SNP genotyping was performed using the real-time PCR (RT-PCR) method...
2016: Molecular Vision
https://www.readbyqxmd.com/read/27777044/renin-angiotensin-aldosterone-system-inhibitors-in-hypertension-is-there-evidence-for-benefit-independent-of-blood-pressure-reduction
#20
REVIEW
Chirag Bavishi, Sripal Bangalore, Franz H Messerli
The renin-angiotensin-aldosterone system (RAAS) plays a pivotal role in the pathogenesis of hypertension (HTN). Angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin II receptor blockers (ARBs) are first line anti-HTN drug classes that are potent, effective and largely safe. Direct renin inhibitors (DRIs) have shown similar blood pressure (BP) reduction but more side effects. The efficacy of ACEIs and ARBs (for cardiovascular, cerebrovascular and renal protection) has been promoted to extend beyond what could be explained by BP reduction alone...
November 2016: Progress in Cardiovascular Diseases
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