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Angiotensin AND RAS

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https://www.readbyqxmd.com/read/29339688/choice-of-treatment-based-on-turkish-hypertension-consensus-report-do-we-follow-the-recommendations
#1
Gülden Yürüyen, İlkim Deniz Toprak, Zeki Toprak, Murat Akarsu, Pınar Demir, Yücel Arman, Eylem Özgün Çil, Mustafa Özcan, Sedat Irmak, Özgür Altun, Şengül Aydın Yoldemir, Hasan Eruzun, Tufan Tükek
OBJECTIVE: The aim of this study was to determine how often the recommendations of the Turkish Hypertension Consensus Report are followed, and to draw attention to the report. METHODS: The demographic information of 1000 patients diagnosed with hypertension and the details of the antihypertensive medications prescribed at the outpatient service of a tertiary care hospital were recorded, and the data were compared with the recommendations of the report. RESULTS: The mean age of the patients was 62±11 years...
January 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29296205/angiotensin-ii-receptor-type-1-a1166c-modifies-the-association-between-angiotensinogen-m235t-and-chronic-kidney-disease
#2
Sui-Lung Su, Wei-Teing Chen, Po-Jen Hsiao, Kuo-Cheng Lu, Yuh-Feng Lin, Chin Lin, Wen Su, Shih-Jen Yeh, Hung Chang, Fu-Huang Lin
Single nucleotide polymorphisms (SNPs) in renin-angiotensin system (RAS) genes are associated with RAS imbalance and chronic kidney disease (CKD). We performed a case-control study and meta-analysis to investigate the association between angiotensinogen (AGT) M235T polymorphism and CKD. A total of 634 patients with end-stage renal disease and 739 healthy controls were studied. We also searched PubMed and the Cochrane Library to identify prospective observational studies published before December 2015. We found that the TT and MT genotypes were associated with a higher risk of CKD than the MM genotype (odds ratio [OR]: 3...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29289477/kidney-function-after-a-hypertensive-disorder-of%C3%A2-pregnancy-a-longitudinal-study
#3
Nina D Paauw, Anne Marijn van der Graaf, Rita Bozoglan, David P van der Ham, Gerjan Navis, Ron T Gansevoort, Henk Groen, A Titia Lely
BACKGROUND: Registry-based studies report an increased risk for end-stage kidney disease after hypertensive disorders of pregnancy (HDPs). It is unclear whether HDPs lead to an increased incidence of chronic kidney disease (CKD) and/or progression of kidney function decline. STUDY DESIGN: Subanalysis of the Prevention of Renal and Vascular Endstage Disease (PREVEND) Study, a Dutch population-based cohort with follow-up of 5 visits approximately 3 years apart. SETTING & PARTICIPANTS: Women without and with patient-reported HDPs (non-HDP, n=1,805; HDP, n=977) were identified...
December 28, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29288933/targeting-the-renin-angiotensin-system-as-novel-therapeutic-strategy-for-pulmonary-diseases
#4
REVIEW
Wan Shun Daniel Tan, Wupeng Liao, Shuo Zhou, Dan Mei, Wai-Shiu Fred Wong
The renin-angiotensin system (RAS) plays a major role in regulating electrolyte balance and blood pressure. RAS has also been implicated in the regulation of inflammation, proliferation and fibrosis in pulmonary diseases such as asthma, acute lung injury (ALI), chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF) and pulmonary arterial hypertension (PAH). Current therapeutics suffer from some drawbacks like steroid resistance, limited efficacies and side effects. Novel intervention is definitely needed to offer optimal therapeutic strategy and clinical outcome...
December 27, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29282632/effects-of-cilostazol-and-renin-angiotensin-system-ras-blockers-on-the-renal-disease-progression-of-korean-patients-a-retrospective-cohort-study
#5
Yoojin Noh, Jimin Lee, Sooyoung Shin, Inwhee Park, Soo Kyung Bae, Euichul Oh, Sukhyang Lee
Background Decline in estimated glomerular filtration rate (eGFR) is an important surrogate marker for the assessment of renal function. Addition of a second agent to angiotensin-converting-enzyme inhibitor (ACEI) or angiotensin II receptor blocker (ARB) treatment may improve current therapeutic strategies aimed at suppressing renal disease progression. Objective To determine the effect of cilostazol in combination with ACEI or ARB treatment on the decline in eGFR. Setting A tertiary hospital in Korea. Method In an observational cohort study, we analyzed 5505 patients who were prescribed ACEI or ARB and cilostazol or other antiplatelet agents...
December 27, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/29278298/egg-white-ovotransferrin-derived-ace-inhibitory-peptide-ameliorates-angiotensin-ii-stimulated-insulin-resistance-in-skeletal-muscle-cells
#6
Myoungjin Son, Catherine B Chan, Jianping Wu
SCOPE: The renin-angiotensin system (RAS) is a major contributor to the development of insulin resistance and its related complications. Egg white ovotransferrin-derived tripeptides, IRW, IQW, or LKP were previously identified as the inhibitors of angiotensin converting enzyme (ACE), a key enzyme in the RAS. This study aimed at determining whether these peptides are effective in improving insulin resistance, and their mechanisms of action, in a rat derived skeletal muscle cell line (L6 cells)...
December 26, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29274384/carthamus-tinctorius-l-extract-improves-hemodynamic-and-vascular-alterations-in-a-rat-model-of-renovascular-hypertension-through-ang-ii-at1r-nadph-oxidase-pathway
#7
Sarawoot Bunbupha, Chutamas Wunpathe, Putcharawipa Maneesai, Thewarid Berkban, Upa Kukongviriyapan, Veerapol Kukongviriyapan, Parichat Prachaney, Poungrat Pakdeechote
Carthamus tinctorius L. (CT) is widely used in Asian countries as a beverage and in folk medicine. The effects of CT extract on hemodynamics, vascular remodeling, the renin-angiotensin system (RAS) and oxidative stress in the two-kidney, one clip (2K-1C) hypertensive rat model were investigated. Renovascular hypertension was induced in male Sprague-Dawley rats and were treated with CT extract (500mg/kg/day) or captopril (5mg/kg/day) or vehicle for four weeks. CT extract or captopril reduced blood pressure, hindlimb vascular resistance, and increased hindlimb blood flow in 2K-1C hypertensive rats (p <0...
December 20, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29262407/the-role-of-%C3%AE-adrenergic-overstimulation-in-the-early-stages-of-renal-injury
#8
Mariana Charleaux de Ponte, Fernando Augusto Malavazzi Casare, Juliana Martins Costa-Pessoa, Vanessa Gerolde Cardoso, Gerhard Malnic, Margarida Mello-Aires, Rildo Aparecido Volpini, Karina Thieme, Maria Oliveira-Souza
BACKGROUND/AIMS: To assess the possible contribution of the β-adrenergic overstimulation in early stages of renal injury, the present study evaluated, in rats, the effects of the β-adrenoceptor agonist isoproterenol (ISO) on renal function and morphology, as well as the renal mRNA and protein expression of the NADPH oxidase isoform 4 (Nox 4) and subunit p22phox, endoplasmic reticulum (ER) stress, pro-inflammatory, pro-apoptotic and renin-angiotensin system (RAS) components. METHODS: Wistar rats received ISO (0...
December 14, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29240802/systemic-factors-related-to-soluble-pro-renin-receptor-in-plasma-of-patients-with-proliferative-diabetic-retinopathy
#9
Keitaro Hase, Atsuhiro Kanda, Ikuyo Hirose, Kousuke Noda, Susumu Ishida
(Pro)renin receptor [(P)RR], a new component of the tissue renin-angiotensin system (RAS), plays a crucial role in inflammation and angiogenesis in the eye, thus contributing to the development of proliferative diabetic retinopathy (PDR). In this study, we investigated systemic factors related to plasma levels of soluble form of (P)RR [s(P)RR] in patients with PDR. Twenty type II diabetic patients with PDR and 20 age-matched, non-diabetic patients with idiopathic macular diseases were enrolled, and plasma levels of various molecules were measured by enzyme-linked immunosorbent assays...
2017: PloS One
https://www.readbyqxmd.com/read/29232407/temporal-changes-in-cardiac-oxidative-stress-inflammation-and-remodeling-induced-by-exercise-in-hypertension-role-for-local-angiotensin-ii-reduction
#10
Sebastião D Silva, Zaira P Jara, Roseli Peres, Larissa S Lima, Cristóforo Scavone, Augusto C Montezano, Rhian M Touyz, Dulce E Casarini, Lisete C Michelini
Exercise training reduces renin-angiotensin system (RAS) activation, decreases plasma and tissue oxidative stress and inflammation in hypertension. However, the temporal nature of these phenomena in response to exercise is unknown. We sought to determine in spontaneously hypertensive rats (SHR) and age-matched WKY controls the weekly effects of training on blood pressure (BP), plasma and left ventricle (LV) Ang II and Ang-(1-7) content (HPLC), LV oxidative stress (DHE staining), gene and protein expression (qPCR and WB) of pro-inflammatory cytokines, antioxidant enzymes and their consequence on hypertension-induced cardiac remodeling...
2017: PloS One
https://www.readbyqxmd.com/read/29229547/role-of-angiotensin-system-modulation-on-progression-of-cognitive-impairment-and-brain-mri-changes-in-aged-hypertensive-animals-a-randomized-double-blind-pre-clinical-study
#11
Heba A Ahmed, Tauheed Ishrat, Bindu Pillai, Kristopher M Bunting, Ashni Patel, Almira Vazdarjanova, Jennifer L Waller, Ali S Arbab, Adviye Ergul, Susan C Fagan
Growing evidence suggests that renin angiotensin system (RAS) modulators support cognitive function in various animal models. However, little is known about their long-term effects on the brain structure in aged hypertensive animals with chronic cerebral hypoperfusion as well as which specific domains of cognition are most affected. Therefore, in the current study we examined the effects of Candesartan and Compound 21 (C21) (RAS modulators) on aspects of cognition known to diminish with advanced age and accelerate with hypertension and vascular disease...
December 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29221188/overexpression-of-agt-promotes-bronchopulmonary-dysplasis-via-the-jak-stat-signal-pathway
#12
Lili Shen, Tiancheng Zhang, Hongyan Lu
Angiotensinogen (AGT) is involved in the production of angiotensin II which is the main mediator of action of the rennin-angiotensin system (RAS), whereas the RAS mediates the regulation of sodium homeostasis, blood pressure, and inflammation. The present study aimed to investigate the roles of the AGT in the progression of broncopulmonary dysplasia in premature newborns. By bioinformatics analysis, AGT was found to be the major node in molecular interaction networks of BPD mouse model. Quantitative PCR and western blot analyses were applied to examine AGT expression in A549 cells which were treated with the hyperoxic condition...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29216260/angiotensin-receptor-blockers-are-associated-with-lower-mortality-than-ace-inhibitors-in-predialytic-stage-5-chronic-kidney-disease-a-nationwide-study-of-therapy-with-renin-angiotensin-system-blockade
#13
Chih-Ching Lin, Yu-Te Wu, Wu-Chang Yang, Min-Juei Tsai, Jia-Sin Liu, Chi-Yu Yang, Szu-Yuan Li, Shuo-Ming Ou, Der-Cherng Tarng, Chih-Cheng Hsu
Dual renin angiotensin system (RAS) blockade using angiotensin-receptor blockers (ARBs) in combination with angiotensin converting enzyme inhibitors (ACEIs) is reported to improve proteinuria in both diabetic and non-diabetic patients. However, its renoprotective effect and safety remain uncertain in patients with advanced chronic kidney disease (CKD). From January 1, 2000 through June 30, 2009, we enrolled 14,117 pre-dialytic stage 5 CKD patients with serum creatinine >6mg/dL and hematocrit <28% under the treatment with erythropoiesis stimulating agents and RAS blockade...
2017: PloS One
https://www.readbyqxmd.com/read/29216228/primary-prevention-of-myocardial-infarction-with-angiotensin-converting-enzyme-inhibitors-and-angiotensin-receptor-blockers-in-hypertensive-patients-with-rheumatoid-arthritis-a-nationwide-cohort-study
#14
Ting-Tse Lin, Cho-Kai Wu, Min-Tsun Liao, Yao-Hsu Yang, Pau-Chung Chen, Dong-Feng Yeih, Lian-Yu Lin
BACKGROUND: Rheumatoid arthritis (RA) is regarded as a high risk factor for myocardial infarction. Hypertension is a major modifiable risk factor contributing to increased risk of myocardial infarction (MI). Dual blood pressure (BP)-lowering and anti-inflammatory effect of renin-angiotensin-system (RAS) inhibitors may possess protective effect from MI in RA population. However, treatment of hypertension with RAS inhibitors and MI in RA population remains unclear. METHODS: We investigated whether RAS blockade could decrease risk of incident MI in hypertensive patients with RA...
2017: PloS One
https://www.readbyqxmd.com/read/29211853/nrf2-deficiency-upregulates-intrarenal-angiotensin-converting-enzyme-2-and-angiotensin-1-7-receptor-expression-and-attenuates-hypertension-and-nephropathy-in-diabetic-mice
#15
Shuiling Zhao, Anindya Ghosh, Chao-Sheng Lo, Isabelle Chenier, James W Scholey, Janos G Filep, Julie R Ingelfinger, Shao-Ling Zhang, John S D Chan
We investigated the role of nuclear factor erythroid 2-related factor 2 (Nrf2) in renin-angiotensin system (RAS) gene expression in renal proximal tubule cells (RPTCs) and in the development of systemic hypertension and kidney injury in diabetic Akita mice. We used adult male Akita Nrf2 knockout (KO) mice and Akita mice treated with trigonelline (an Nrf2 inhibitor) or oltipraz (an Nrf2 activator). We also examined immortalized rat RPTCs (IRPTCs) stably transfected with control plasmids or plasmids containing rat angiotensinogen (Agt), angiotensin-converting enzyme (ACE), angiotensin-converting enzyme-2 (Ace2) or angiotensin 1-7 receptor (MasR) gene promoters...
December 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/29207220/-long-term-outcome-of-renal-function-in-women-with-preeclampia-and-pregestational-diabetes
#16
REVIEW
Carmela Vadalà, Valeria Cernaro, Rossella Siligato, Roberta Granese, Antonio Simone Laganà, Michele Buemi, Domenico Santoro
Pre-eclampsia (PE) is an important cause of acute renal failure and an important risk marker for subsequent chronic kidney disease. In normal pregnancy, there are marked changes in the renin-angiotensin system (RAS) including considerably elevated angiotensin II (ang II) levels. However, vascular resistance decreases markedly during normal pregnancy, suggesting that pregnant individuals are less sensitive to ang II than non-pregnant individuals. In contrast, during PE decreased circulating components of the RAS with enhanced sensitivity of ang II infusion have been reported...
December 5, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29201202/ginsenoside-rg3-induces-ginsenoside-rb1-comparable-cardioprotective-effects-independent-of-reducing-blood-pressure-in-spontaneously-hypertensive-rats
#17
Yichuan Jiang, Min Li, Zeyuan Lu, Yuchen Wang, Xiaofeng Yu, Dayun Sui, Li Fu
Ginsenoside Rg3 (Rg3) is a rare type of ginsenoside used as an anti-tumor medicine in China. Ginsenoside Rb1 (Rb1), which exhibits protective effects on the cardiovascular system, is similar to Rg3 in chemical structure. In the present study, Rb1 and Rg3 were administered for 6 weeks to spontaneously hypertensive rats (SHR) and their cardioprotective effects were assessed. According to echocardiography and histopathological examinations, the decrease in cardiac function and ventricular remodeling that occurred in SHR rats were attenuated by Rb1 and Rg3...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29192236/estrogen-attenuates-agtr1-expression-to-reduce-pancreatic-%C3%AE-cell-death-from-high-glucose
#18
Suwattanee Kooptiwut, Keerati Wanchai, Namoiy Semprasert, Chatchawan Srisawat, Pa-Thai Yenchitsomanus
Chronic exposure of pancreatic β-cells to high glucose levels results in β-cell dysfunction and death. These effects can be protected by estrogen. The local pancreatic renin-angiotensin system (RAS) has been shown as a novel pathological pathway of high-glucose-induced cell death. The effect of estrogen on pancreatic RAS is still unknown. This study examines whether estrogen protects against pancreatic β-cell death caused by glucotoxicity via a decrease in the pancreatic β-cell RAS pathway. When INS-1 cells were cultured in a high glucose medium, cell death was significantly higher than when the cells were cultured in a basal glucose medium; similarly, there were also higher levels of AGTR1 and p47 ph ° x mRNA, and protein expression...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29190205/hypertension-regulating-angiotensin-peptides-in-the-pathobiology-of-cardiovascular-disease
#19
Misbah Hussain, Fazli Rabbi Awan
Renin angiotensin system (RAS) is an endogenous hormone system involved in the control of blood pressure and fluid volume. Dysregulation of RAS has a pathological role in causing cardiovascular diseases through hypertension. Among several key components of RAS, angiotensin peptides, varying in amino acid length and biological function, have important roles in preventing or promoting hypertension, cardiovascular diseases, stroke, vascular remodeling etc. These peptides are generated by the metabolism of inactive angiotensinogen or its derived peptides by hydrolyzing action of certain enzymes...
November 30, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29178879/residual-renal-function-in-chronic-dialysis-is-not-associated-with-reduced-erythropoietin-stimulating-agent-dose-requirements-a-cross-sectional-study
#20
Elizabeth Helene Louw, Mogamat-Yazied Chothia
BACKGROUND: Anaemia is a very common problem in patients with end-stage kidney disease (ESKD) and the use of erythropoietin-stimulating agents (ESA) has revolutionised its treatment. Residual renal function (RRF) is associated with a reduction in ESA resistance and mortality in chronic dialysis. The primary aim was to establish whether RRF has an association with ESA dose requirements in ESKD patients receiving chronic dialysis. METHODS: A single center, cross-sectional study involving 100 chronic dialysis patients was conducted from December 2015 to May 2016...
November 25, 2017: BMC Nephrology
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