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effect of angiotensin 2 on the kidneys

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https://www.readbyqxmd.com/read/28514645/oleanolic-acid-modulates-the-renin-angiotensin-system-and-cardiac-natriuretic-hormone-concomitantly-with-volume-and-pressure-balance-in-rats
#1
You Mee Ahn, Yoon Hee Choi, Jung Joo Yoon, Yun Jung Lee, Kyung Woo Cho, Dae Gill Kang, Ho Sub Lee
Oleanolic acid is known to possess beneficial effects on the regulation of the cardiovascular homeostasis. However, the exact nature of the role of oleanolic acid on the regulation of body fluid balance and blood pressure homeostasis and its mechanisms involved are not well defined. Experiments were performed to identify the effects of oleanolic acid on the renin-angiotensin system and cardiac natriuretic hormone (ANP) system, and also renal function and blood pressure in normotensive and renovascular hypertensive rats...
May 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28511711/sglt2-inhibitors-a-novel-choice-for-the-combination-therapy-in-diabetic-kidney-disease
#2
REVIEW
Honghong Zou, Baoqin Zhou, Gaosi Xu
Diabetic kidney disease (DKD) is the most common cause of end stage renal disease. The comprehensive management of DKD depends on combined target-therapies for hyperglycemia, hypertension, albuminuria, and hyperlipaemia, etc. Sodium-glucose co-transporter 2 (SGLT2) inhibitors, the most recently developed oral hypoglycemic agents acted on renal proximal tubules, suppress glucose reabsorption and increase urinary glucose excretion. Besides improvements in glycemic control, they presented excellent performances in direct renoprotective effects and the cardiovascular (CV) safety by decreasing albuminuria and the independent CV risk factors such as body weight and blood pressure, etc...
May 16, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28509129/successful-long-term-effects-of-direct-renin-inhibitor-aliskiren-in-a-patient-with-atherosclerotic-renovascular-hypertension
#3
Norihiko Morisawa, Naoki Sugano, Takafumi Yamakawa, Satoru Kuriyama, Takashi Yokoo
A 64-year-old man visited our hospital with complaints of misty vision and ophthalmalgia. On admission, his blood pressure (BP) was high at 220/135 mmHg with no past history of hypertension, and he had choked discs. He was tentatively diagnosed as having idiopathic intracranial hypertension, and was later found to have atherosclerotic unilateral renovascular hypertension (RVH) based upon the extremely high plasma renin activity together with the radiological image tests. On day 3, combined antihypertensive therapies consisting of oral angiotensin II receptor blocker (ARB) and Ca channel blocker (CCB) along with intravenous CCB induced an abrupt BP lowering which led to deterioration of his renal function, progressing into acute kidney injury (AKI)...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28486415/the-presence-of-anti-angiotensin-ii-type-1-receptor-antibodies-adversely-affect-kidney-graft-outcomes
#4
Jian Zhang, Mingxu Wang, Jun Liang, Ming Zhang, Xiao-Hong Liu, Le Ma
The aim of this study was to determine whether anti-angiotensin type 1 receptor antibodies (AT1R-Abs) are related to acute rejection (AR) and kidney graft failure in renal transplantation. We searched electronic databases including MEDLINE, EMBASE, and the ISI Web of Science databases for all studies on the association between anti-angiotensin type 1 receptor antibodies and kidney allograft outcomes updated to November 2016. Reference lists from included articles were also reviewed. The pooled relative risks (RRs) with 95% confidence intervals (CIs) were extracted or calculated using a random-effects model...
May 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28482281/ace-and-sglt2-inhibitors-the-future-for-non-diabetic-and-diabetic-proteinuric-renal-disease
#5
REVIEW
Norberto Perico, Piero Ruggenenti, Giuseppe Remuzzi
Most chronic nephropathies progress relentlessly to end-stage kidney disease. Research in animals and humans has helped our understanding of the mechanisms of chronic kidney disease progression. Current therapeutic strategies to prevent or revert renal disease progression focus on reduction of urinary protein excretion and blood pressure control. Blockade of the renin-angiotensin system (RAS) with angiotensin-converting enzyme inhibitors and/or angiotensin II type 1 receptor blockers is the most effective treatment to achieve these purposes in non-diabetic and diabetic proteinuric renal diseases...
May 5, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28461604/evidence-for-heterodimerization-and-functional-interaction-of-the-angiotensin-type-2-receptor-and-the-receptor-mas
#6
Julia Leonhardt, Daniel C Villela, Anke Teichmann, Lisa-Marie Münter, Magnus C Mayer, Maibritt Mardahl, Sebastian Kirsch, Pawel Namsolleck, Kristin Lucht, Verena Benz, Natalia Alenina, Nicholas Daniell, Masatsugu Horiuchi, Masaru Iwai, Gerhard Multhaup, Ralf Schülein, Michael Bader, Robson A Santos, Thomas Unger, Ulrike Muscha Steckelings
The angiotensin type 2 receptor (AT2R) and the receptor MAS are receptors of the protective arm of the renin-angiotensin system. They mediate strikingly similar actions. Moreover, in various studies, AT2R antagonists blocked the effects of MAS agonists and vice versa. Such cross-inhibition may indicate heterodimerization of these receptors. Therefore, this study investigated the molecular and functional interplay between MAS and the AT2R. Molecular interactions were assessed by fluorescence resonance energy transfer and by cross correlation spectroscopy in human embryonic kidney-293 cells transfected with vectors encoding fluorophore-tagged MAS or AT2R...
June 2017: Hypertension
https://www.readbyqxmd.com/read/28456626/compound-21-and-telmisartan-combination-mitigates-type-2-diabetic-nephropathy-through-amelioration-of-caspase-mediated-apoptosis
#7
Anuradha Pandey, Anil Bhanudas Gaikwad
The current study aimed to understand the role of novel, highly selective, orally active, non-peptide Angiotensin II type 2 receptor (AT2R) agonist, Compound 21 and its potential additive effect with Telmisartan on apoptosis and underlying posttranslational modifications in a non-genetic murine model for type 2 diabetic nephropathy (T2DN). An experimental model for T2DN was developed by administering low dose Streptozotocin in high fat diet fed male Wistar rats, followed by their treatment with Telmisartan, C21 or their combination...
June 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28450836/renal-denervation-promotes-atherosclerosis-in-hypertensive-apolipoprotein-e-deficient-mice-infused-with-angiotensin-ii
#8
Yutang Wang, Tam N Dinh, Alexander Nield, Smriti M Krishna, Kate Denton, Jonathan Golledge
Objective: To determine the effect of renal denervation (RDN) on the severity of atherosclerosis and aortic aneurysm in hypertensive mice. Methods: Hypertension, atherosclerosis and aortic aneurysm were induced by subcutaneous infusion of angiotensin II (1 μg/kg/min) for 28 days in apolipoprotein E-deficient mice. RDN was conducted using combined surgical and local chemical denervation. The norepinephrine concentration in the kidney was measured by high-performance liquid chromatography. Blood pressure was measured by the tail-cuff method...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28449154/dual-raas-blockade-with-aliskiren-in-patients-with-severely-impaired-chronic-kidney-disease
#9
Franz Maximilian Rasche, Claudia Joel, Thomas Ebert, Thomas Frese, Filip Barinka, Volker Busch, Wilma Gertrud Rasche, Tom H Lindner, Jochen Schneider, Stephan Schiekofer
Dual renin-angiotensin-aldosterone blockade (dRAASb) is purposed in the prevention of the cardiorenal syndrome (CRS). However, all attempts with dRAASb even in patients with moderate impaired chronic kidney disease (CKD) were terminated due to the typical severe adverse events (SAE), e. g., hyperkalemia and rise of serum creatinine. The aim of our study with the direct renin inhibitor aliskiren was to evaluate the effect of dRAASb with a washout phase in patients with severely advanced CKD. We have studied 45 patients (G3b to 4, A2 and >A3; median glomerular filtration rate (GFR) CKD-EPI 31 (23-40) ml/min per 1...
April 27, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28431667/the-potential-and-pitfalls-of-glp-1-receptor-agonists-for-renal-protection-in-type-2-diabetes
#10
Merlin C Thomas
Glucagon-Like Peptide-1 Receptor agonists (GLP-1 RA) offer substantial benefits for the management of glucose levels in type 2 diabetes. In addition, recent data from clinical trials have demonstrated that treatment with Glucagon-Like Peptide-1 Receptor agonists (GLP-1 RA) are also able to reduce new onset macroalbuminuria. These benefits may be consistent with the known effects of GLP-1 RA on traditional risk factors for progressive kidney disease including glucose lowering, blood pressure lowering, reduced insulin levels and weight reduction...
April 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28415944/pentoxifylline-plus-aceis-arbs-for-proteinuria-and-kidney-function-in-chronic-kidney-disease-a-meta-analysis
#11
Dong Liu, Li-Na Wang, Hong-Xia Li, Ping Huang, Liang-Bo Qu, Fei-Yan Chen
Objective This meta-analysis aimed to investigate the efficacy and safety of pentoxifylline (PTF) plus angiotensin-converting enzyme inhibitors (ACEIs)/angiotensin receptor blockers (ARBs) for proteinuria and kidney function in chronic kidney disease (CKD). Methods CENTRAL, EMBASE, Ovid-MEDLINE, PubMed, and CNKI were searched for relevant, randomized, controlled trials (RCTs). A meta-analysis was performed to review the effect of PTF plus ACEIs/ARBs vs. ACEIs/ARBs alone on proteinuria and kidney function in CKD...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28413969/optimizing-the-management-of-uncontrolled-hypertension-what-do-triple-fixed-dose-drug-combinations-add
#12
Costas Thomopoulos, Georgios Katsimagklis, Stefanos Archontakis, Georgios Skalis, Thomas Makris
Fixed-dose triple drug combinations represent one of the latest innovations of pharmacotherapy for hypertension (HT). They combine a traditional renin-angiotensin system blocker, a diuretic and a calcium channel blocker. The main benefit is the simplification of treatment regimen because 3 different agents are combined at different doses in a single pill. Improving adherence to treatment partly explains why this kind of combination may effectively reduce blood pressure (BP). BP lowering by a single-pill triple-drug combination can be approximately predicted, by using appropriate formulas described in previous meta-analysis of randomized trials...
April 14, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28411074/low-dose-sustained-release-deoxycorticosterone-acetate-induced-hypertension-in-bama-miniature-pigs-for-renal-sympathetic-nerve-denervation
#13
Wenzheng Han, Weiyi Fang, Qian Gan, Shaofeng Guan, Yanjie Li, Ming Wang, Kaizheng Gong, Xinkai Qu
Recently, the effectiveness of renal sympathetic nerve denervation for treatment of hypertension has been doubted after SYMPLICITY HTN-3 trial. An ideal animal model is still unavailable for preclinical study about catheter-based renal sympathetic nerve denervation for treatment of hypertension. Traditional high-dose deoxycorticosterone acetate (DOCA)-induced hypertension pig model has some problems due to extensive end-organ damage. Based on the similarity in the anatomic characteristics of renal artery between pigs and humans, this study was undertaken to establish a low-dose sustained-release DOCA-induced hypertension model in pigs...
March 2, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28395659/abelmoschus-manihot-a-traditional-chinese-medicine-versus-losartan-potassium-for-treating-iga-nephropathy-study-protocol-for-a-randomized-controlled-trial
#14
Ping Li, Yi-Zhi Chen, Hong-Li Lin, Zhao-Hui Ni, Yong-Li Zhan, Rong Wang, Hong-Tao Yang, Jing-Ai Fang, Nian-Song Wang, Wen-Ge Li, Xue-Feng Sun, Xiang-Mei Chen
BACKGROUND: IgA nephropathy (IgAN) is one of the most common primary glomerular diseases worldwide, but effective therapy remains limited and many patients progress to end-stage renal disease (ESRD). Only angiotensin-converting enzyme inhibitors (ACE-I)/angiotensin-receptor blockers (ARB) show a high level of evidence (1B level) of being of value in the treatment for IgAN according to the 2012 Kidney Disease: Improving Global Outcomes (KDIGO) guidelines. However, traditional Chinese medicine has raised attention in kidney disease research...
April 11, 2017: Trials
https://www.readbyqxmd.com/read/28395333/ovine-uterine-space-restriction-causes-dysregulation-of-the-renin-angiotensin-system-in-fetal-kidneys%C3%A2
#15
Rachel A Kranch-Shorthouse, Adam S Bauer, Ronald R Magness, Gladys E Lopez, Jeffrey L Segar, Sharon E Blohowiak, Pamela J Kling
In ovine pregnancy, uterine space restriction (USR) resulting from decreased space for placental attachment caused intrauterine growth restriction and impaired nephrogenesis. The fetal kidney renin-angiotensin system (RAS) is involved in nephrogenesis, fluid balance, and iron deposition. Angiotensin II exerts its effects via multiple receptors: angiotensin II 1-8 receptor type 1 (AT 1 R) and type 2 (AT 2 R), and angiotensin II 1-7 Mas receptor (MASR). Objective: : To test the hypothesis that ovine USR is associated with dysregulation of the fetal renal RAS...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28382626/use-of-radiocontrast-agents-in-ckd-and-esrd
#16
Jehan Z Bahrainwala, Amanda K Leonberg-Yoo, Michael R Rudnick
Contrast exposure in a population with chronic kidney disease (CKD) requires additional consideration given the risk of contrast-induced nephropathy (CIN) after exposure to iodinated contrast as well as systemic injury with exposure to gadolinium-based contrast agents (GBCA). Strategies to avoid CIN, and manage patients after exposure, including extracorporeal removal of contrast media, may differ among an advanced CKD population as compared to a general population. There is strong evidence to support the use of isotonic volume expansion and the lowest dose of low-osmolar or iso-osmolar contrast media possible to decrease CIN...
April 5, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28359068/the-effect-of-combined-treatment-with-the-pro-renin-receptor-blocker-hrp-and-quinapril-in-type-1-diabetic-rats
#17
Gábor Kökény, Lilla Fang, Csaba Révész, Miklós M Mózes, Péter Vörös, Gábor Szénási, László Rosivall
BACKGROUND/AIMS: Diabetic nephropathy remains a major clinical problem. The effects of prorenin might be adverse, but the literature data are controversial. We compared the renal effects of the (pro)renin receptor ((P)RR) blockade and angiotensin converting enzyme (ACE) inhibition on the progression of diabetic nephropathy in rats. METHODS: Diabetes (DM) was induced by ip. streptozotocin administration in adult male Sprague-Dawley rats, followed by eight weeks of treatment with the (P)RR blocker "handle region" decoy peptide (HRP, 0,1 mg/kg/day) or with the ACE inhibitor Quinapril (Q, 50 mg/kg/day) and grouped as follows: 1...
2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28358246/effects-of-direct-renin-inhibition-versus-angiotensin-ii-receptor-blockade-on-angiotensin-profiles-in-non-diabetic-chronic-kidney-disease
#18
Marlies Antlanger, Sebastian Bernhofer, Johannes J Kovarik, Chantal Kopecky, Christopher C Kaltenecker, Oliver Domenig, Marko Poglitsch, Marcus D Säemann
BACKGROUND: Direct renin inhibition (DRI) is clinically inferior to other blockers of the renin-angiotensin system (RAS). Thus far, the underlying molecular causes of this finding remain unknown. METHODS: Twenty four patients with non-diabetic chronic kidney disease (CKD) stages III-IV and albuminuria were randomized to DRI or angiotensin receptor blocker (ARB). Employing a novel mass-spectrometry method, the concentrations of renin, aldosterone and plasma angiotensin peptides [Ang I, Ang II, Ang-(1-7), Ang-(1-5), Ang-(2-8), Ang-(3-8)] were quantified before and after an 8-week treatment...
April 17, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28339567/role-of-biomechanical-forces-in-hyperfiltration-mediated-glomerular-injury-in-congenital-anomalies-of-the-kidney-and-urinary-tract
#19
Tarak Srivastava, Ganesh Thiagarajan, Uri S Alon, Ram Sharma, Ashraf El-Meanawy, Ellen T McCarthy, Virginia J Savin, Mukut Sharma
Congenital anomalies of the kidney and urinary tract (CAKUT) including solitary kidney constitute the main cause of progressive chronic kidney disease (CKD) in children. Children born with CAKUT develop signs of CKD only during adolescence and do not respond to renin-angiotensin-aldosterone system blockers. Early cellular changes underlying CKD progression to end-stage renal disease by early adulthood are not well understood. The mechanism of maladaptive hyperfiltration that occurs from loss of functional nephrons, including solitary kidney, is not clear...
May 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28321001/comparative-effects-of-an-angiotensin-ii-receptor-blocker-arb-diuretic-vs-arb-calcium-channel-blocker-combination-on-uncontrolled-nocturnal-hypertension-evaluated-by-information-and-communication-technology-based-nocturnal-home-blood-pressure-monitoring%C3%A3-the
#20
Kazuomi Kario, Naoko Tomitani, Hiroshi Kanegae, Hajime Ishii, Kazuaki Uchiyama, Kayo Yamagiwa, Toshihiko Shiraiwa, Tomohiro Katsuya, Tetsuro Yoshida, Kiyomi Kanda, Shinji Hasegawa, Satoshi Hoshide
BACKGROUND: Nocturnal blood pressure (BP) is an independent risk factor of cardiovascular events. The NOCTURNE study, a multicenter, randomized controlled trial (RCT) using our recently developed information and communication technology (ICT) nocturnal home BP monitoring (HBPM) device, was performed to compare the nocturnal HBP-lowering effects of differential ARB-based combination therapies in 411 Japanese patients with nocturnal hypertension (HT).Methods and Results:Patients with nocturnal BP ≥120/70 mmHg at baseline even under ARB therapy (100 mg irbesartan daily) were enrolled...
March 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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