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angiotensin 1-7

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https://www.readbyqxmd.com/read/28096099/high-saturated-fat-diet-increases-circulating-angiotensin-converting-enzyme-which-is-enhanced-by-the-rs4343-polymorphism-defining-persons-at-risk-of-nutrient-dependent-increases-of-blood-pressure
#1
Rita Schüler, Martin A Osterhoff, Turid Frahnow, Anne-Cathrin Seltmann, Andreas Busjahn, Stefan Kabisch, Li Xu, Alexander S Mosig, Joachim Spranger, Matthias Möhlig, Silke Hornemann, Michael Kruse, Andreas F H Pfeiffer
BACKGROUND: Angiotensin-converting enzyme (ACE) plays a major role in blood pressure regulation and cardiovascular homeostasis. Contrary to the assumption that ACE levels are stable, circulating ACE has been shown to be altered in obesity and weight loss. We sought to examine effects of a high-saturated-fat (HF) diet on ACE within the NUtriGenomic Analysis in Twins (NUGAT) study. METHODS AND RESULTS: Forty-six healthy and nonobese twin pairs initially consumed a carbohydrate-rich, low-fat diet over a period of 6 weeks to standardize for nutritional behavior prior to the study, followed by 6 weeks of HF diet under isocaloric conditions...
January 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28096047/cellular-basis-of-angiotensin-1-7-induced-augmentation-of-left-ventricular-functional-performance-in-heart-failure
#2
Xiaowei Zhang, Heng-Jie Cheng, Peng Zhou, Dalane W Kitzman, Carlos M Ferrario, Wei-Min Li, Che Ping Cheng
BACKGROUND: Angiotensin-(1-7) [Ang-(1-7)] exhibits cardiovascular effects opposite those of angiotensin II (Ang II), thus providing protection against heart disease. However, how Ang-(1-7) imparts cardioprotection is unclear, and its direct cardiac effects are controversial. Whether heart failure (HF) alters cardiac contractile responses to Ang-(1-7) remains undetermined. We tested the hypothesis that in HF, Ang-(1-7) may produce positive modulation on [Ca(2+)]i regulation, enhancing left ventricular (LV) and myocyte contraction and relaxation via Ang-(1-7) Mas receptor coupled with nitric oxide (NO)/bradykinin (BK)-mediated mechanism...
January 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28093466/effects-of-sacubitril-valsartan-versus-olmesartan-on-central-hemodynamics-in-the-elderly-with-systolic-hypertension-the-parameter-study
#3
Bryan Williams, John R Cockcroft, Kazuomi Kario, Dion H Zappe, Patrick C Brunel, Qian Wang, Weinong Guo
Effective treatment of systolic hypertension in elderly patients remains a major therapeutic challenge. A multicenter, double-blind, randomized controlled trial with sacubitril/valsartan (LCZ696), a first-in-class angiotensin receptor neprilysin inhibitor, was conducted to determine its effects versus olmesartan (angiotensin receptor blocker) on central aortic pressures, in elderly patients (aged ≥60 years) with systolic hypertension and pulse pressure >60 mm Hg, indicative of arterial stiffness. Patients (n=454; mean age, 67...
January 16, 2017: Hypertension
https://www.readbyqxmd.com/read/28091615/pirfenidone-controls-the-feedback-loop-of-the-at1r-p38-mapk-renin-angiotensin-system-axis-by-regulating-liver-x-receptor-%C3%AE-in-myocardial-infarction-induced-cardiac-fibrosis
#4
Chunmei Li, Rui Han, Le Kang, Jianping Wang, Yonglin Gao, Yanshen Li, Jie He, Jingwei Tian
Pirfenidone (PFD), an anti-fibrotic small molecule drug, is used to treat fibrotic diseases, but its effects on myocardial infarction (MI)-induced cardiac fibrosis are unknown. The aim of this study was to determine the effects of PFD on MI-induced cardiac fibrosis and the possible underlying mechanisms in rats. After establishment of the model, animals were administered PFD by gavage for 4 weeks. During the development of MI-induced cardiac fibrosis, we found activation of a positive feedback loop between the angiotensin II type 1 receptor (AT1R)/phospho-p38 mitogen-activated protein kinase (p38 MAPK) pathway and renin-angiotensin system (RAS), which was accompanied by down-regulation of liver X receptor-α (LXR-α) expression...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089721/angiotensin-inhibitors-as-treatment-of-sunitinib-pazopanib-induced-hypertension-in%C3%A2-metastatic-renal-cell-carcinoma
#5
Patrick Penttilä, Juhana Rautiola, Tuija Poussa, Katriina Peltola, Petri Bono
BACKGROUND: Research suggests that baseline use of angiotensin system inhibitors (ASIs) improves outcome in patients with metastatic renal cell carcinoma (mRCC), but it remains unknown whether the type of antihypertensive medication used to initiate management at onset of treatment-induced hypertension (HTN) is associated with outcome. We evaluated the association of ASIs and outcome among patients with mRCC treated with first-line tyrosine kinase inhibitors (TKIs). PATIENTS AND METHODS: We identified 303 consecutive patients with mRCC who were treated with sunitinib or pazopanib in a single university hospital cancer center...
December 22, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28079534/practical-efficacy-of-olmesartan-versus-azilsartan-in-patients-with-hypertension-a-multicenter-randomized-controlled-trial-muscat-4-study
#6
Yuki Kakio, Haruhito A Uchida, Ryoko Umebayashi, Hidemi Takeuchi, Yuka Okuyama, Yoshihisa Hanayama, Jun Wada
BACKGROUND: Olmesartan and azilsartan, angiotensin II receptor blockers (ARBs), are expected to decrease blood pressure more than the other ARBs. We conducted randomized-controlled trials to compare the practical efficacy of olmesartan with azilsartan. METHODS: Eighty-four patients treated with the conventional ARBs for more than 3 months were assigned randomly to receive either 20 mg of olmesartan (olmesartan medoxomil, OL group) or 20 mg of azilsartan (azilsartan, not azilsartan medoxomil, AZ group) once daily for 16 weeks...
January 10, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28076452/angiotensin-1-7-relieved-renal-injury-induced-by-chronic-intermittent-hypoxia-in-rats-by-reducing-inflammation-oxidative-stress-and-fibrosis
#7
W Lu, J Kang, K Hu, S Tang, X Zhou, S Yu, L Xu
We aimed to study the renal injury and hypertension induced by chronic intermittent hypoxia (CIH) and the protective effects mediated by angiotensin 1-7 [Ang(1-7)]. We randomly assigned 32 male Sprague-Dawley rats (body weight 180-200 g) to normoxia control, CIH, Ang(1-7)-treated normoxia, and Ang(1-7)-treated CIH groups. Systolic blood pressure (SBP) was monitored at the start and end of each week. Renal sympathetic nerve activity (RSNA) was recorded. CTGF and TGF-β were detected by immunohistochemistry and western blotting...
January 9, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28075040/n-acetyl-seryl-aspartyl-lysyl-proline-mediates-the-anti-fibrotic-properties-of-captopril-in-unilateral-ureteric-obstructed-balb-c-mice
#8
Gary Cw Chan, Hao Jia Wu, Kam Wa Chan, Stella Yiu, Ailis Zou, Xiao Ru Huang, Hui Yao Lan, Kar Neng Lai, Sydney Cw Tang
BACKGROUND: Angiotensin-converting enzyme inhibitors (ACEi) are widely employed to deter the progression of chronic kidney disease (CKD). Besides controlling hypertension and reduction of intra-glomerular pressure, ACEi appear to have anti-fibrotic effects in the renal cortex. N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP), an endogenous tetrapeptide that is degraded by ACE, has also been shown to ameliorate the pro-fibrotic phenotype displayed in CKD in our recent study. Whether the anti-fibrotic properties of ACEi are mediated by Ac-SDKP has not been fully investigated...
January 11, 2017: Nephrology
https://www.readbyqxmd.com/read/28064508/assessing-the-effect-of-pharmacist-care-on-diabetes-related-outcomes-in-a-rural-outpatient-clinic
#9
Cynthia Moreau, Karen R Sando, Daniel H Zambrano
BACKGROUND: The care of diabetic patients in rural areas is complicated by factors such as poor health literacy, cultural barriers, and primary care provider (PCP) shortages. Integrating pharmacist care in diabetes management in these settings may increase access to care and improve patient outcomes. OBJECTIVE: To evaluate differences in diabetes-related outcomes in patients with type 2 diabetes (T2DM) managed by a pharmacist diabetes clinic compared with patients only managed by PCPs in a rural family medicine clinic...
December 1, 2016: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28064163/predicting-albuminuria-response-to-spironolactone-treatment-with-urinary-proteomics-in-patients-with-type-2-diabetes-and-hypertension
#10
Morten Lindhardt, Frederik Persson, Christina Oxlund, Ib A Jacobsen, Petra Zürbig, Harald Mischak, Peter Rossing, Hiddo J L Heerspink
BACKGROUND: The mineralocorticoid receptor antagonist spironolactone significantly reduces albuminuria in patients with diabetes. Prior studies have shown large between-patient variability in albuminuria treatment response. We previously developed and validated a urinary proteomic classifier that predicts onset and progression of chronic kidney disease. Here, we tested whether the proteomic classifier based on 273 urinary peptides (CKD273) predicts albuminuria response to spironolactone treatment...
January 7, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28063459/cardiac-remodeling-following-reperfused-acute-myocardial-infarction-is-linked-to-the-concomitant-evolution-of-vascular-function-as-assessed-by-cardiovascular-magnetic-resonance
#11
Olivier Huttin, Damien Mandry, Romain Eschalier, Lin Zhang, Emilien Micard, Freddy Odille, Marine Beaumont, Renaud Fay, Jacques Felblinger, Edoardo Camenzind, Faïez Zannad, Nicolas Girerd, Pierre Y Marie
BACKGROUND: Left ventricular (LV) remodeling following acute myocardial infarction (MI) is difficult to predict at an individual level although a possible interfering role of vascular function has yet to be considered to date. This study aimed to determine the extent to which this LV remodeling is influenced by the concomitant evolution of vascular function and LV loading conditions, as assessed by phase-contrast Cardiovascular Magnetic Resonance (CMR) of the ascending aorta. METHODS: CMR was performed in 121 patients, 2-4 days after reperfusion of a first ST-segment elevation myocardial infarction and 6 months thereafter...
January 4, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28058450/collagenous-sprue-cross-sectional-imaging-a-comparative-blinded-study
#12
Badr Al-Bawardy, Shannon P Sheedy, Michelle B Herberts, Joseph A Murray, Alberto Rubio-Tapia, Elizabeth Rajan, David H Bruining, Stephanie L Hansel, John M Barlow, Joel G Fletcher, Jeff L Fidler
PURPOSE: Collagenous sprue (CS) is a rare enteropathy characterized by villous atrophy and a thickened subepithelial collagen band. The aim of this study is to describe the cross-sectional imaging findings of CS. METHODS: A case-control, retrospective study with cases of all CS patients from January 2000 to 2015 was performed. Inclusion criteria were (1) Histopathologic diagnosis and (2) Imaging with computed tomography abdomen/pelvis (CT A/P), CT enterography (CTE), or magnetic resonance enterography within 6 months of small bowel (SB) biopsy...
January 5, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28054808/cognitive-impairment-in-heart-failure-a-protective-role-for-angiotensin-1-7
#13
Meredith Hay, Todd W Vanderah, Farmin Samareh-Jahani, Eleni Constantopoulos, Ajay R Uprety, Carol A Barnes, John Konhilas
Patients with congestive heart failure (CHF) have increased hospital readmission rates and mortality if they are concomitantly diagnosed with cognitive decline and memory loss. Accordingly, we developed a preclinical model of CHF-induced cognitive impairment with the goal of developing novel protective therapies against CHF related cognitive decline. CHF was induced by ligation of the left coronary artery to instigate a myocardial infarction (MI). By 4- and 8-weeks post-MI, CHF mice had approximately a 50% and 70% decline in ejection fraction as measured by echocardiography...
January 5, 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28039944/hydrochlorothiazide-modulates-ischemic-heart-failure-induced-cardiac-remodeling-via-inhibiting-angiotensin-ii-type-1-receptor-pathway-in-rats
#14
Jinghong Luo, Xuanlan Chen, Chufan Luo, Guihua Lu, Longyun Peng, Xiuren Gao, Zhiyi Zuo
AIMS: Our previous study indicates that hydrochlorothiazide inhibits transforming growth factor (TGF)-β/Smad signaling pathway, improves cardiac function and reduces fibrosis. We determined whether these effects were common among the diuretics and whether angiotensin II receptor type 1 (AT1) signaling pathway played a role in these effects. METHODS: Heart failure was produced by ligating the left anterior descending coronary artery in adult male Sprague-Dawley rats...
December 31, 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28034583/differential-hypertensive-protease-expression-in-the-thoracic-versus-abdominal-aorta
#15
Jean Marie Ruddy, Adam W Akerman, Denise Kimbrough, Elizabeth K Nadeau, Robert E Stroud, Rupak Mukherjee, John S Ikonomidis, Jeffrey A Jones
BACKGROUND: Hypertension (HTN), which is a major risk factor for cardiovascular morbidity and mortality, can drive pathologic remodeling of the macro- and microcirculation. Patterns of aortic pathology differ, however, suggesting regional heterogeneity of the pressure-sensitive protease systems triggering extracellular matrix remodeling in the thoracic (TA) and abdominal aortas (AA). This study tested the hypothesis that the expression of two major protease systems (matrix metalloproteinases [MMPs] and cathepsins) in the TA and AA would be differentially affected with HTN...
December 26, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28033130/the-effect-of-vitamin-d-on-renin-angiotensin-system-activation-and-blood-pressure-a-randomized-control-trial
#16
Ciaran J McMullan, Lea Borgi, Gary C Curhan, Naomi Fisher, John P Forman
OBJECTIVE: Disruption of vitamin D signaling in rodents causes activation of the rennin-angiotensin system (RAS) and development of hypertension. Observational studies in humans found lower circulating 25-hydroxyvitamin D [25(OH)D] is associated with increased RAS activity and blood pressure (BP). We performed the first randomized control trial to investigate the effects of vitamin D supplementation on the RAS in humans. METHODS: Vitamin D deficient, [25(OH)D ≤20 ng/ml), overweight individuals without hypertension were randomized into a double-blind, placebo-controlled trial of 8-weeks treatment with ergocalciferol or placebo...
December 28, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/28030430/prestroke-treatment-with-beta-blockers-for-hypertension-is-not-associated-with-severity-and-poor-outcome-in-patients-with-ischemic-stroke-data-from-a-national-stroke-registry
#17
Silvia Koton, David Tanne, Ehud Grossman
BACKGROUND: Beta-blockers are not recommended as the initial therapy for hypertension. Reports on associations between use of beta-blockers and stroke severity are inconclusive. We assessed associations between prestroke use of beta-blockers and stroke severity, poststroke disability and death in a large group of hypertensive patients hospitalized with acute ischemic stroke. METHODS: All 3915 patients with ischemic stroke, treated prestroke for hypertension and registered in the National Acute Stroke ISraeli, were included...
December 24, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/28028641/the-insertion-deletion-polymorphism-in-the-angiotensin-converting-enzyme-gene-and-nicotine-dependence-in-schizophrenia-patients
#18
Sergej Nadalin, Smiljana Ristić, Jelena Rebić, Vesna Šendula Jengić, Miljenko Kapović, Alena Buretić-Tomljanović
We investigated the relationship between the functional insertion/deletion (I/D) polymorphism in the angiotensin-converting enzyme (ACE) gene and the risk of nicotine dependence in Croatian schizophrenia patients. We also tested whether interactions between ACE-I/D polymorphism and smoking status affected the clinical psychopathology findings in patients as measured using Positive and Negative Symptom Scale (PANSS) scores. Polymerase chain reaction analysis was used to genotype 267 chronically ill schizophrenia patients (140 males/127 females)...
December 27, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28018949/further-intracellular-proteins-and-signaling-pathways-regulated-by-angiotensin-1-7-in-human-endothelial-cells
#19
Christian Meinert, Franziska Kohse, Ilka Böhme, Florian Gembardt, Anja Tetzner, Thomas Wieland, Barry Greenberg, Thomas Walther
In 2016, Meinert et al. (doi: 10.1016/j.jprot.2015.09.020) published the first 25 proteins in a protein array regulated in Human Umbilical Vein Endothelial Cells (HUVEC) by the heptapeptide angiotensin (Ang)-(1-7) and the first 10 intracellular signaling cascades at different time points. This supporting data article shows further proteins and pathways stimulated by Ang-(1-7) in human endothelial cells at time points of 1 h, 3 h, 6 h, and 9 h. HUVECs were stimulated with Ang-(1-7), and regulated proteins were identified via antibody microarray...
February 2017: Data in Brief
https://www.readbyqxmd.com/read/28018220/the-angiotensin-1-7-mas-axis-counteracts-angiotensin-ii-dependent-and-independent-pro-inflammatory-signaling-in-human-vascular-smooth-muscle-cells
#20
Laura A Villalobos, Álvaro San Hipólito-Luengo, Mariella Ramos-González, Elena Cercas, Susana Vallejo, Alejandra Romero, Tania Romacho, Raffaele Carraro, Carlos F Sánchez-Ferrer, Concepción Peiró
Background and Aims: Targeting inflammation is nowadays considered as a challenging pharmacological strategy to prevent or delay the development of vascular diseases. Angiotensin-(1-7) is a member of the renin-angiotensin system (RAS) that binds Mas receptors and has gained growing attention in the last years as a regulator of vascular homeostasis. Here, we explored the capacity of Ang-(1-7) to counteract human aortic smooth muscle cell (HASMC) inflammation triggered by RAS-dependent and -independent stimuli, such as Ang II or interleukin (IL)-1β...
2016: Frontiers in Pharmacology
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