renin angiotensin system

..The full text of this article is available at http://www. circresaha.org...

..Thus, blockade of this system will remain a cornerstone of our strategies to reduce cardiovascular risk...

..Great expectations are now generated by the introduction of renin inhibitors. Indeed, RAS regulates much more and diverse physiological functions than previously believed...

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..These data suggest that a 5% reduction in body weight can lead to a meaningfully reduced renin-angiotensin-aldosterone system in plasma and adipose tissue, which may contribute to the reduced blood pressure...

The renin angiotensin system (RAS; most well-known for its critical roles in the regulation of cardiovascular function and hydromineral balance) has regained the spotlight for its potential roles in various aspects of the metabolic ..

b>Renin angiotensin system (RAS) worsens diabetic nephropathy (DN) by increasing oxidative stress...

..This review encompasses the pharmacology of Ang-(1-7) and expounds upon the peptide's potential as a therapeutic agent against pathological processes both within and outside the cardiovascular continuum...

..In this review we will focus on the recent findings related to angiotensin-(1-7) as an angiotensin II counter-regulatory peptide within the renin-angiotensin system...

..Thus, the antithrombotic effect of renin-angiotensin system blockers involves Ang-(1-7)-evoked release of NO and prostacyclin...

..Certain agents that modify the RAAS can control blood pressure and improve cardiovascular outcomes. Aliskiren is the first of a new class of antihypertensive agents known as renin inhibitors...

..The results indicate that these RAS gene polymorphisms do not affect the antihypertensive activity and renoprotection in mild-to-moderate hypertensive patients treated with telmisartan...

..This review focuses on angiotensin-(1-7) and its important contribution to cardiovascular function and growth, while introducing angiotensin-(1-12) as a potential novel angiotensin precursor...

..Taken together, the resultant activation of a local renin angiotensin system by high glucose may promote progressive podocyte injury and loss in diabetic nephropathy.

..Since variations on the renin angiotensin (RA) system tend to exert effects on blood pressure, we investigated the association of the common ACE and AT1R polymorphisms with response to a multivariate pharmacotherapy...

..In conclusion, we found an association between the angiotensinogen variant 235T and preeclampsia as well as an interaction between the variant 235T and the two other genes studied...

..The purpose of this study is to determine whether expression levels of RAS differ between nondiabetic and diabetic renal tissues with accurate quantitative method...

..We studied the expression of ACE2 after myocardial infarction (MI) in the rat as well as in human failing hearts...

..Moreover, PTX3 has been suggested to represent a novel mortality risk factor, and elevated PTX3 levels have been shown to accompany increased albuminuria among patients with chronic kidney disease (CKD)...

..As a major player of vascular homeostasis, the renin angiotensin system (RAS) proteins constitute an interesting source of candidate genes...

OBJECTIVES: This study aimed to characterize the difference between renin angiotensin system (RAS)-dependent and RAS-independent hypertrophy and their differential contribution to the transition to heart failure...

..We hypothesized that hypercholesterolemia stimulates the production of angiotensin peptides to provide a rationale for the profound effect of AT1A receptor deficiency on atherogenesis...

..In conclusion, we found that the level of aldosterone content in the healthy rat heart in vivo is significantly lower than that reported elsewhere and reflects plasma levels in intact rats...

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..Although there is no association between salt sensitivity and the different studied genotypes of the RAAS and of the GNB3, our data show a greater risk for salt sensitivity among carriers of the W allele of the CYP11B2 1C polymorphism...

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..Reports suggest that angiotensin-receptor blockers (ARBs) reduce proteinuria, but results are variable. The relative effect of ARBs and angiotensin-converting enzyme (ACE) inhibitors, and their combined administration, remains uncertain...

..The genes associated with hypertension could be genetic risk factors for metabolic syndrome (MetS)...

..We provide a general review of the RAS and its role in diabetic nephropathy...

..This study was conducted to detect the levels of renin and angiotensin II (ANGII) both in renal tissue and plasma from kidney transplantation patients suffering from CAN...

Blockade of the renin angiotensin system (RAS) via angiotensin I converting enzyme (ACE) inhibition reduces growth of colorectal cancer (CRC) liver metastases in a mouse model...

Our objective was to investigate the associations between polymorphisms in representative genes of the renin angiotensin system with measures of cerebral blood flow regulation in older adults.

..Thus, ACE2 may exert pivotal effects on cardiovascular and renal conditions...

..Hyperglycemia, elevated circulating fatty acids, inadequate local activation of renin angiotensin system, and chronic low grade inflammation are conditions that coexist in the CMS and DM2 that turn out to be ..

..To assess and compare the effects of candesartan or lisinopril, or both, on blood pressure and urinary albumin excretion in patients with microalbuminuria, hypertension, and type 2 diabetes...

..These results suggest that hypoadiponectinemia is related to insulin resistance in essential hypertension and that RAS blockade increases adiponectin concentrations with improvement in insulin sensitivity...

..The increased expression of the AT1-receptor in islet transplants could have relevance to islet-graft function...

..Trials now underway will demonstrate whether angiotensin II receptor antagonists can prevent target-organ damage and reduce cardiovascular morbidity and mortality. If they do, these compounds might one day replace ACE inhibitors...

..In this article, we review the antihypertensive efficacy of aliskiren and explore its potential in the management of cardiovascular and renal risk...

..The identification of the mechanisms leading to the activation of inflammation should contribute to the development of specific therapeutic approaches to apply in hypertension and its complications...

..The significance of its reversibility and adaptability following chronic hypoxia may be of physiological relevance to the pancreas...

..As there are no existing data for the Turkish population, we investigated four Renin Angiotensin System (RAS) gene polymorphisms, the angiotensin converting enzyme (ACE), angiotensinogen (AGN) M235T/T174M and ..

..We investigated the vascular effects of candesartan in hypertensive patients...

..1+/-17.6 ml/minute/1.73 m2). When it was above the median, the RPF response was also larger (62.2+/-13.9 ml/minute/1.73 m2; p=0.006). Renin response to ACE-I and ARB confirms activation of the RAS in diabetic patients...

..This review provides a broad overview of the entire role of the renin-angiotensin system in atherothrombotic disease, ranging from molecular pathways to human genetics to the latest clinical trials...

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..A 24-hour blockade can be achieved with an angiotensin antagonist alone, provided higher doses or a BID regimen is used...

..ACE2 might act in a counter-regulatory manner to ACE, modulating the balance between vasoconstrictors and vasodilators within the heart and kidney, and playing a significant role in regulating cardiovascular and renal function...

..3) Angiotensin converting enzyme was shown in epithelial cells in both normal and malignant tissue. The results are consistent with the hypothesis that a tRAS is present in the breast, and is disrupted in invasive cancer...

..This study compared the pharmacokinetics and pharmacodynamics of the orally active direct renin inhibitor, aliskiren, in healthy volunteers and patients with type 2 diabetes...

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..This review aims to consider the preventive effect of ARBs on new-onset atrial fibrillation observed in recent reports from these trials, and to discuss possible mechanisms of the beneficial effect of angiotensin II-receptor blockade...

..001 and <0.05). Determination of AGT M235T and PAI-1 genotypes prior to transplantation may help identify patients who at risk for chronic renal transplant dysfunction...

..Findings from CRISP and the rationale for interventions in ADPKD are described, and the design of the HALT-PKD clinical trial is outlined...

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..We examined an association of the three renin-angiotensin system (RAS) gene polymorphisms with renal disease and progression to ESRD in dialyzed patients...

..In addition, these results revealed that PTH1R-mediated mechanisms might have protective effects against cardiovascular stress-induced responses, including stimulations in heart rate and RAS...

..These results suggest that danshen has an anti-hypertensive effect through the inhibition of ACE, an essential regulatory enzyme of RAS...

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..Such information is vital, not only to make sense of observed associations, but all the more so if one wants to apply the insights on the role of genetic factors into better strategies for disease intervention...

..We also showed that AT1 autoantibodies cross the ureteroplacental barrier. These components could participate in the pathophysiology of preeclampsia...

..Genes encoding for angiotensinogen (AGT), angiotensin-converting enzyme (ACE), and aldosterone synthase (CYP11B2) are candidates for abnormal blood pressure regulation...

..This study, part of a clinical trial, was designed to measure the influence of circadian rhythms, antihypertensive drugs, and body posture on plasma renin, on aldosterone, and on their interrelation...

..Tg(mRen2) congenic rats, a failure of compensatory ACE2 and ANG-(1-7)-dependent vasodepressor mechanisms may contribute both to the development and progression of hypertension driven by increased formation of endogenous ANG II...

..Finally we will discuss what might distinguish renin inhibitors from current therapeutic options and discuss other therapeutic indications renin inhibitors might have...

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..The metabolic clearance rate of AngIII is five times that of AngII...

..Finally, ACE2 augmentation, antisense gene strategies, and vaccination against the renin-angiotensin system should still be considered experimental, but have significant appeal as additional approaches to the blockade of this system...

..Understanding the molecular and cellular mechanisms that participate in the early development of hypertensive vascular disease may lead to more targeted treatment and improved outcomes...

..Selective decrease of ANG II receptors in the SFO of the genetically hypertensive rats with enalapril may be related to its therapeutic efficacy...

..Emerging data from experimental and clinical studies may lead to improvements in therapeutic efforts to prevent or slow the progression of renal disease...

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..05) and Per + Irb (-36%, p < 0.05) but not with Per (-11%, p = 0.60). CONCLUSION: Only combined therapy with irbesartan plus perindopril concurrently reduces plasma aldosterone, proteinuria and urinary TGF-beta1...

..Hence, a higher dose of a long-acting ARB is as effective as a lower dose of the same compound combined with an angiotensin-converting enzyme inhibitor in terms of blockade of the vascular effects of angiotensin...

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..Caution regarding the future of hypertension pharmacogenetics is warranted...

..The relevant and necessary studies are ongoing...

..For many patients, this is likely to lead to improved treatment...

..Moreover, we found no evidence that insulin affects sympathetic nervous system activity. However, chronic losartan treatment revealed an important interaction between insulin and RAAS in BP control...

..Aliskiren is effective in animal models, while recent results from studies in humans indicate that aliskiren is the first in a new class of orally effective renin inhibitors for the treatment of hypertension...

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..Here we report the results of a pre-planned 6-month interim analysis of a long-term, open-label study examining the safety, tolerability and efficacy of the aliskiren/valsartan 300/320-mg combination in patients with hypertension...

..These results suggest the presence of a functional RAS in vascular tissues, and that delapril exerts its antihypertensive effect through inhibition of vascular Ang II release in SHRs...

..Patients with proteinuria > 1 g/day despite optimal BP control with angiotensin-converting enzyme (ACE) inhibitor or angiotensin receptor blocker (ARB) monotherapy may benefit from a combination therapy...

..The enhanced activity of the RAAS in male congenics may contribute to the higher pressure and tissue injury evident in the strain...

..Further, the salt-sensitive component appears to be Ang II-dependent, as it was associated with increasing plasma Ang II levels and could be reversed by treatment with an Ang II receptor antagonist...

..New outcomes trials are under way to explore the full potential of more complete RAS blockade with regard to cardiovascular target-organ protection...

..The low kidney renin appears to be due to physiological rather than genetic factors...

..Studies are in progress to evaluate the potential role for renin inhibition in management of kidney and cardiac diseases...

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..The review ends with a brief overview of the available (pre)clinical aliskiren data and a description of its safety profile...

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..Mol Cell 3:1-10, 1999. Nishimura H, Ichikawa I: What have we learned from gene targeting studies for the renin angiotensin system of the kidney? Intern Med, 38:315-323,1999...

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..The work should advance diagnosis and treatment of hypertension. ..

..Thus, an understanding of this behavior has important ramifications with respect to the development of hypertension and cardiovascular disease. ..

..Thus, an understanding of this behavior has important ramifications with respect to the development of hypertension and cardiovascular disease. ..

..Thus, an understanding of this behavior has important ramifications with respect to the development of hypertension and cardiovascular disease. ..

..The results of this project will provide new insights on the role of Ang II/Ang (1-7) balance in the pathophysiology of ischemic stroke, and thus facilitate the development of novel therapeutic targets for ischemic stroke. ..

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..therapy is broadly effective in patients with diabetic nephropathy suggesting an important role for renin angiotensin system in the progression of this disorder...

..therapy is broadly effective in patients with diabetic nephropathy suggesting an important role for renin angiotensin system in the progression of this disorder...

..We expect that the results of our research will improve life quality and expectancy of the obese, insulin resistant U.S. population, in addition to lowering the overall economic cost of managing cardiovascular disease. ..

..We expect that the results of our research will improve life quality and expectancy of the obese, insulin resistant U.S. population, in addition to lowering the overall economic cost of managing cardiovascular disease. ..

..It is anticipated that specific blockade may lead to strategies with clinical relevance for the possible prevention or amelioration of HUS. ..

..The goals of this research are to definitively determine the role of adipose-derived angiotensins and the systemic renin-angiotensin system in blood pressure elevations in diet-induced obesity. ..

..This will lead to improved outcomes in adulthood. ..

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..Highly activated renal vasoconstrictors, such as the renin angiotensin system and renal sympathetic nerves are considered to maintain the unique conditions in the developing renal ..

..We expect that the results of our research will improve life quality and expectancy of the obese, insulin resistant U.S. population, in addition to lowering the overall economic cost of managing cardiovascular disease. ..

..Insights gained in understanding of the mechanisms of Ang II signaling will lead to increased understanding of the pathogenesis and potential treatment of hypertension and atherosclerosis. ..