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Renin angiotensin aldosterone system

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https://www.readbyqxmd.com/read/27910864/renin-angiotensin-aldosterone-system-gene-polymorphisms-in-gestational-hypertension-and-preeclampsia-a-case-control-gene-association-study
#1
Xun Li, Hongzhuan Tan, Shujin Zhou, Shimin Hu, Tianyi Zhang, Yangfen Li, Qianru Dou, Zhiwei Lai, Fenglei Chen
Pregnancy-induced hypertension (PIH, including preeclampsia [PE] and gestational hypertension [GH]) and cardiovascular diseases (CVDs) have some metabolic changes and risk factors in common. Many studies have reported associations between single nucleotide polymorphisms (SNPs) of renin-angiotensin-aldosterone system (RAAS) genes and CVDs (particularly hypertension), and their findings have provided candidate SNPs for research on genetic correlates of PIH. We explored the association between hypertension-related RAAS SNPs and PIH in a Chinese population...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27906842/spironolactone-and-the-risk-of-urinary-tract-cancer-in-patients-with-hypertension-a-nationwide-population-based-retrospective-case-control-study
#2
Ya-Wen Chuang, Mei-Ching Yu, Shih-Ting Huang, Cheng-Kuang Yang, Cheng-Hsu Chen, Ying-Chih Lo, Cheng-Li Lin, Kuo-Hsiung Shu, Tung-Min Yu, Chia-Hung Kao
AIM: This was a nationwide study by National Health Insurance Research Database to investigate the risk of urinary tract cancers (UTCs) for renin-angiotensin-aldosterone system inhibitors including spironolactone. METHODS: A total of 32 167 UTC patients with hypertension were enrolled in the National Health Insurance program between 2005 and 2011. RESULTS: Among different subclasses of renin-angiotensin-aldosterone system inhibitors, the adjusted odds ratio (OR) for UTC risk was 1...
January 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27906749/sodium-and-potassium-in-the-pathogenesis-of-hypertension-focus-on-the-brain
#3
Horacio J Adrogué, Nicolaos E Madias
PURPOSE OF REVIEW: Primary hypertension is characterized by Na excess and K deficit in the body, which together are key to its pathogenesis. These derangements work jointly in the brain and the peripheral vascular wall to establish hypertension. In this review, we highlight recent evidence describing the central mechanisms through which Na surfeit and K deficit enhance sympathetic nerve activity, thereby raising peripheral vascular resistance and generating hypertension. RECENT FINDINGS: Animal studies point to a small increase in plasma and cerebrospinal fluid (CSF) [Na], a small decrease in CSF [K], and increased levels of circulating angiotensin II, aldosterone, and endogenous ouabain as the central signals evoking hypertension...
November 30, 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27904025/early-raas-blockade-exerts-renoprotective-effects-in-autosomal-recessive-alport-syndrome
#4
Nao Uchida, Naonori Kumagai, Kandai Nozu, Xue Jun Fu, Kazumoto Iijima, Yoshiaki Kondo, Shigeo Kure
Alport syndrome is a progressive renal disease caused by mutations in COL4A3, COL4A4, and COL4A5 genes that encode collagen type IV alpha 3, alpha 4, and alpha 5 chains, respectively. Because of abnormal collagen chain, glomerular basement membrane becomes fragile and most of the patients progress to end-stage renal disease in early adulthood. COL4A5 mutation causes X-linked form of Alport syndrome, and two mutations in either COL4A3 or COL4A4 causes an autosomal recessive Alport syndrome. Recently, renin-angiotensin-aldosterone system (RAAS) blockade has been shown to attenuate effectively disease progression in Alport syndrome...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27902451/vitamin-d-and-male-reproductive-system
#5
Pablo R Costanzo, Pablo Knoblovits
Vitamin D deficiency is a highly prevalent worldwide condition and affects people of all ages. The most important role of vitamin D is the regulation of intestinal calcium absorption and metabolism of calcium and phosphorus to maintain muscle and bone homeostasis. Furthermore, in recent years it has been discovered that the vitamin D receptor (VDR) is widely distributed in many organs and tissues where vitamin D can perform other actions that include the modulation of the immune response, insulin secretion, anti-proliferative effect on cells of vascular smooth muscle, modulation of the renin-angiotensin-aldosterone system and regulates cell growth in several organs...
December 1, 2016: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/27900954/renin-angiotensin-aldosterone-system-blockade-in-diabetic-kidney-disease-a-critical-and-contrarian-point-of-view
#6
REVIEW
Mohamed E Elrggal, Shaaban M S Ahmed, Meguid El Nahas
Diabetes mellitus is the most common cause of end-stage renal disease (ESRD) worldwide. Diabetic kidney disease (DKD) is associated with high morbidity and cardiovascular mortality. A number of guidelines and recommendations have been issued over the years recommending the use of renin-angiotensin-aldosterone system (RAAS) blockade in the management of DKD. This critical analysis takes a contrarian view, based on a selection of key clinical trials in the field, to argue that albuminuria should not be considered a target for treatment but instead a surrogate marker of DKD progression...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27895487/combination-therapy-with-lercanidipine-and-enalapril-in-the-management-of-the-hypertensive-patient-an-update-of-the-evidence
#7
REVIEW
Christina Antza, Stella Stabouli, Vasilios Kotsis
Hypertension is an important risk factor for premature death as it increases the probability of stroke, myocardial infarction, and heart failure. Antihypertensive drugs can decrease cardiovascular (CV) morbidity and mortality. The majority of hypertensive patients need more than one antihypertensive agent to attain blood pressure (BP) targets. Monotherapy can effectively reduce BP only in 20%-40% of patients. Multiple mechanisms including increased peripheral vascular resistance, increased cardiac work, and hypervolemia are involved in the pathogenesis of hypertension...
2016: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/27892684/angiotensin-receptor-neprilysin-inhibitor-lcz696-pharmacology-pharmacokinetics-and-clinical-development
#8
Yue Hua, Ian Wang, Bin Liu, Darren J Kelly, Christopher Reid, Danny Liew, Yingchun Zhou, Bing H Wang
Heart failure still has a significant disease burden with poor outcomes worldwide despite advances in therapy. The standard therapies have been focused on blockade of renin-angiotensin-aldosterone system with angiotensin-converting enzyme inhibitors, angiotensin receptor blockers and mineralocorticoid antagonists and the sympathetic nervous system with β-blockers. The natriuretic peptide system is a potential counter-regulatory system that promotes vasodilatation and natriuresis. Angiotensin receptor neprilysin inhibitors are a new class drug capable of blocking the renin-angiotensin-aldosterone system and enhancing the natriuretic peptide system to improve neurohormonal balance...
November 28, 2016: Future Cardiology
https://www.readbyqxmd.com/read/27889753/renal-denervation-attenuates-multi-organ-fibrosis-and-improves-vascular-remodeling-in-rats-with-transverse-aortic-constriction-induced-cardiomyopathy
#9
Kai Wang, Dasheng Lu, Bin Zhang, Shengchan Wang, Qian Liu, Qi Zhang, Jie Geng, Qijun Shan
BACKGROUND/AIMS: To investigate the effects of renal denervation (RDN) on multi-organ fibrosis and vascular remodeling in cardiomyopathy. METHODS: Thirty-six male Sprague-Dawley rats underwent transverse aortic constriction (TAC). Five weeks later, 28 surviving TAC rats were randomly assigned to three groups: (1) RDN, (2) Sham, (3) Carvedilol. Six male Sham TAC rats served as the Control. Ten weeks after TAC, samples were collected. RESULTS: TAC rats showed an increased diastolic interventricular septal thickness at week 5...
November 25, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27885499/the-effects-of-alpha-1-adrenoceptor-blockade-and-angiotensin-converting-enzyme-inhibition-on-central-and-brachial-blood-pressure-and-vascular-reactivity-the-doxazosin-ramipril-study
#10
Andreas Jekell, Majid Kalani, Thomas Kahan
We aimed to study whether inhibition of the renin-angiotensin-aldosterone system has effects on vascular structure and function beyond the effects on blood pressure reduction alone. Patients with mild-to-moderate hypertension (n = 61, age 54 ± 12 years, 34% women) received the angiotensin converting enzyme inhibitor ramipril 10 mg or the alpha 1-adrenoceptor blocker doxazosin 8 mg double-blind for 12 weeks. Aortic blood pressure, pulse wave velocity, and augmentation index were assessed by applanation tonometry...
November 24, 2016: Heart and Vessels
https://www.readbyqxmd.com/read/27884306/commentary-for-human-kidney-pericytes-produce-renin
#11
Armin Kurtz
Renin-secreting cells of the kidney display several particularities, including their intrarenal localization in the fetal and in the adult kidney, their ultrastructure, and the mode by which they secrete renin into circulation to trigger the activity of the renin-angiotensin-aldosterone system. The cell type from which renin cells differentiate has long been subject to speculation. The paper by Stefanska et al. now strongly suggests that renin cells are or derive from pericytes.
December 2016: Kidney International
https://www.readbyqxmd.com/read/27884224/the-renin-angiotensin-aldosterone-system-in-obesity-and-hypertension-roles-in-the-cardiorenal-metabolic-syndrome
#12
REVIEW
Peminda K Cabandugama, Michael J Gardner, James R Sowers
In the United States, more than 50 million people have blood pressure at or above 120/80 mm Hg. All components of cardiorenal metabolic syndrome (CRS) are linked to metabolic abnormalities and obesity. A major driver for CRS is obesity. Current estimates show that many of those with hypertension and CRS show some degree of systemic and cardiovascular insulin resistance. Several pathophysiologic factors participate in the link between hypertension and CRS. This article updates recent literature with a focus on the function of insulin resistance, obesity, and renin angiotensin aldosterone system-mediated oxidative stress on endothelial dysfunction and the pathogenesis of hypertension...
January 2017: Medical Clinics of North America
https://www.readbyqxmd.com/read/27884223/local-renin-angiotensin-aldosterone-systems-and-cardiovascular-diseases
#13
REVIEW
Walmor C De Mello
The presence of local renin angiotensin aldosterone systems (RAAS) in the cardiovascular and renal tissues and their influence in cardiovascular and renal diseases are described. The fundamental role of ACE/Ang II/AT1 receptor axis activation as well the counterregulatory role of ACE2/Ang (1-7)/Mas receptor activation on cardiovascular and renal physiology and pathology are emphasized. The presence of a local RAS and its influence on hypertension is discussed, and finally, the hypothesis that epigenetic factors change the RAAS in utero and induce the expression of renin or Ang II inside the cells of the cardiovascular system is presented...
January 2017: Medical Clinics of North America
https://www.readbyqxmd.com/read/27882442/the-effects-of-zofenopril-on-cardiac-function-and-pro-oxidative-parameters-in-the-streptozotocin-induced-diabetic-rat-heart
#14
Petar Ristic, Ivan Srejovic, Tamara Nikolic, Isidora Stojic, Dragana Ristic, Vladimir Zivkovic, Vladimir Lj Jakovljevic
Diabetes mellitus is a chronic condition that continues to increase in both incidence and prevalence. Renin-Angiotensin-Aldosterone System is one of the main modulators of chronic hyperglycaemia and, thus, its influence on tissues. Hyperglycaemia-induced oxidative stress is an important factor in diabetic cardiomyopathy. The present study was carried out on 24 adult male Wistar albino rats (8-week-old and with body masses of 190 ± 10 g). We evaluated the influence of acute administration of zofenopril on ex vivo myocardial function from rats with streptozotocin-induced diabetes mellitus, with a special emphasis on cardiodynamic and oxidative stress parameters in diabetic rat hearts...
November 24, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27881412/renin-angiotensin-aldosterone-system-inhibitors-improve-membrane-stability-and-change-gene-expression-profiles-in-dystrophic-skeletal-muscles
#15
Jessica A Chadwick, Sayak Bhattacharya, Jeovanna Lowe, Noah Weisleder, Jill A Rafael-Fortney
Angiotensin-converting enzyme inhibitors and mineralocorticoid receptor (MR) antagonists are FDA approved drugs that inhibit the renin-angiotensin-aldosterone system (RAAS) and are used to treat heart failure. Combined treatment with the angiotensin-converting enzyme inhibitor lisinopril and the non-specific MR antagonist spironolactone surprisingly improves skeletal muscle, in addition to heart function and pathology in a Duchenne muscular dystrophy mouse model. We recently demonstrated that MR is present in all limb and respiratory muscles and functions as a steroid hormone receptor in differentiated normal human skeletal muscle fibers...
November 23, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27879559/angiotensin-ii-in-refractory-septic-shock
#16
Elio Antonucci, Patrick J Gleeson, Filippo Annoni, Sara Agosta, Sergio Orlando, Fabio Silvio Taccone, Dimitrios Velissaris, Sabino Scolletta
Refractory septic shock is defined as persistently low mean arterial blood pressure despite volume resuscitation and titrated vasopressors/inotropes in patients with a proven or suspected infection and concomitant organ dysfunction. Its management typically requires high doses of catecholamines, which can induce significant adverse effects such as ischemia and arrhythmias. Angiotensin II (Ang II), a key product of the renin-angiotensin-aldosterone system (RAAS), is a vasopressor agent that could be used in conjunction with other vasopressors to stabilize critically ill patients during refractory septic shock, and reduce catecholamine requirements...
November 21, 2016: Shock
https://www.readbyqxmd.com/read/27876563/preoperative-optimization-of-the-heart-failure-patient-undergoing-cardiac-surgery
#17
REVIEW
Maxime Pichette, Mark Liszkowski, Anique Ducharme
Heart failure patients who undergo cardiac surgery are exposed to significant perioperative complications and high mortality. We herein review the literature concerning preoperative optimization of these patients. Salient findings are that end-organ dysfunction and medication should be optimized before surgery. Specifically: (1) reversible causes of anemia should be treated and a preoperative hemoglobin level of 100 g/L obtained; (2) renal function and volume status should be optimized; (3) liver function must be carefully evaluated; (4) nutritional status should be assessed and cachexia treated to achieve a preoperative albumin level of at least 30 g/L and a body mass index > 20; and (5) medication adjustments performed, such as withholding inhibitors of the renin-angiotensin-aldosterone system before surgery and continuing, but not starting, β-blockers...
August 6, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/27873231/atherosclerotic-renal-artery-stenosis
#18
Robert Schoepe, Stephen McQuillan, Debbie Valsan, Geoffrey Teehan
Atherosclerotic Renal Artery Stenosis is a form or peripheral arterial disease that tends to affect older subjects with hyperlipidemia, history of tobacco use, and who have other coexistent forms of vascular insufficiency. An abdominal bruit on physical exam can be a helpful clue. Slowly progressive, it can lead to critical narrowing of the renal arteries which creates a cascade of events such as renin-angiotensin-aldosterone activation (RAAS), hypertension, acute pulmonary edema, and renal fibrosis. The hypertension is considered a secondary form and can even be resistant to multiple antihypertensives...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27873228/hypertension-in-chronic-kidney-disease
#19
Seyed Mehrdad Hamrahian, Bonita Falkner
Hypertension, a global public health problem, is currently the leading factor in the global burden of disease. It is the major modifiable risk factor for heart disease, stroke and kidney failure. Chronic kidney disease (CKD) is both a common cause of hypertension and CKD is also a complication of uncontrolled hypertension. The interaction between hypertension and CKD is complex and increases the risk of adverse cardiovascular and cerebrovascular outcomes. This is particularly significant in the setting of resistant hypertension commonly seen in patient with CKD...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27867524/varying-effects-of-recommended-treatments-for-heart-failure-with-reduced-ejection-fraction-meta-analysis-of-randomized-controlled-trials-in-the-esc-and-accf-aha-guidelines
#20
REVIEW
Marius Mark Thomsen, Christian Lewinter, Lars Køber
The aim of this paper is to evaluate the treatment effects of recommended drugs and devices on key clinical outcomes for patients with heart failure with reduced ejection fraction (HFREF). Randomized controlled trials (RCTs) listed in the 2012 HF guideline from the European Society of Cardiology as well as the 2013 HF guideline from the American College of Cardiology Foundation and American Heart Association were evaluated for use in the meta-analysis. RCTs written in English evaluating recommended drugs and devices for the treatment of patients with HFREF were included...
December 2016: ESC Heart Failure
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