keyword
MENU ▼
Read by QxMD icon Read
search

Aldosterone antagonist

keyword
https://www.readbyqxmd.com/read/28096435/regulation-of-aldosterone-secretion-by-mineralocorticoid-receptor-mediated-signaling
#1
Cherish Chong, Anis Hamid, Tham Yao, Amanda Garza, Luminita Pojoga, Gail K Adler, Jose R Romero, Gordon H Williams
We posit the existence of a paracrine/autocrine negative feedback loop, mediated by the mineralocorticoid receptor (MR), regulating aldosterone secretion. To assess this hypothesis we asked whether altering MR activity in zona glomerulosa (ZG) cells affects aldosterone production. To this end, we studied ex vivo ZG cells isolated from male Wistar rats fed chow containing either high (1.6% Na+ [HS]) or low (0.03% Na+ [LS]) amount of sodium. Western blot analyses demonstrated that MR was present in both the ZG and zona fasciculata/zona reticularis (ZF/ZR/ZR)...
January 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28090229/the-impact-exerted-on-clinical-outcomes-of-patients-with-chronic-heart-failure-by-aldosterone-receptor-antagonists-a-meta-analysis-of-randomized-controlled-trials
#2
Renato De Vecchis, Claudio Cantatrione, Damiana Mazzei, Augusto Barone, Nicola Maurea
BACKGROUND: Aldosterone receptor antagonists (ARAs) have been associated with improved clinical outcomes in patients with heart failure with reduced left ventricular ejection fraction (HFREF), but not in those with heart failure with preserved left ventricular ejection fraction (HFpEF). With the aim to study this topic more deeply, we carried out a meta-analysis of selective and non-selective ARAs in HFREF and HFpEF. METHODS: We searched PubMed and Scopus databases...
February 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28089144/essential-role-of-icam-1-in-aldosterone-induced-atherosclerosis
#3
Vincenzo Marzolla, Andrea Armani, Caterina Mammi, Mary E Moss, Vittoria Pagliarini, Laura Pontecorvo, Antonella Antelmi, Andrea Fabbri, Giuseppe Rosano, Iris Z Jaffe, Massimiliano Caprio
OBJECTIVE: Elevated aldosterone is associated with increased risk of atherosclerosis complications, whereas treatment with mineralocorticoid receptor (MR) antagonists decreases the rate of cardiovascular events. Here we test the hypothesis that aldosterone promotes early atherosclerosis by modulating intercellular adhesion molecule-1 (ICAM-1) expression and investigate the molecular mechanisms by which aldosterone regulates ICAM-1 expression. METHODS AND RESULTS: Apolipoprotein-E (ApoE)(-/-) mice fed an atherogenic diet and treated with aldosterone for 4weeks showed increased vascular expression of ICAM-1, paralleled by enhanced atherosclerotic plaque size in the aortic root...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28075105/heart-failure-due-to-reduced-ejection-fraction-medical-management
#4
William E Chavey, Robrt V Hogikyan, R Van Harrison, John M Nicklas
Heart failure is an increasingly common condition resulting in high rates of morbidity and mortality. For patients who have heart failure and reduced ejection fraction, randomized clinical trials demonstrate consistent mortality benefit from angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, direct-acting vasodilators, beta blockers, and aldosterone antagonists. Additionally, some data show benefits from two new classes of drugs: angiotensin receptor blocker/neprilysin inhibitor and sinus node modulator...
January 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28073769/aldosterone-does-not-predict-cardiovascular-events-following-acute-coronary-syndrome-in-patients-initially-without-heart-failure
#5
Reynaria Pitts, Elise Gunzburger, Christie M Ballantyne, Philip J Barter, David Kallend, Lawrence A Leiter, Eran Leitersdorf, Stephen J Nicholls, Prediman K Shah, Jean-Claude Tardif, Anders G Olsson, John J V McMurray, John Kittelson, Gregory G Schwartz
BACKGROUND: Aldosterone may have adverse effects in the myocardium and vasculature. Treatment with an aldosterone antagonist reduces cardiovascular risk in patients with acute myocardial infarction complicated by heart failure (HF) and left ventricular systolic dysfunction. However, most patients with acute coronary syndrome do not have advanced HF. Among such patients, it is unknown whether aldosterone predicts cardiovascular risk. METHODS AND RESULTS: To address this question, we examined data from the dal-OUTCOMES trial that compared the cholesteryl ester transfer protein inhibitor dalcetrapib with placebo, beginning 4 to 12 weeks after an index acute coronary syndrome...
January 10, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28062142/aldosterone-pathway-blockade-to-prevent-atrial-fibrillation-a-systematic-review-and-meta-analysis
#6
J Neefs, N W E van den Berg, J Limpens, W R Berger, S M Boekholdt, P Sanders, J R de Groot
BACKGROUND: Despite advances in therapeutic interventions AF remains a progressive and symptomatic disease. Therefore, novel therapeutic interventions targeting the underlying arrhythmogenic substrate for AF is needed. Atrial fibrosis is an important component of the arrhythmogenic substrate of AF and may be initiated by aldosterone binding to the mineralocorticoid receptor. We hypothesized that aldosterone pathway blockade with mineralocorticoid receptor antagonists (MRA) reduces atrial fibrosis, and thus AF...
December 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28052869/nlrp3-inflammasome-activation-contributes-to-aldosterone-induced-podocyte-injury
#7
Mi Bai, Ying Chen, Min Zhao, Yue Zhang, John Cijiang He, Songming Huang, Zhanjun Jia, Aihua Zhang
Aldosterone (Aldo) has been shown as an important contributor of podocyte injury. However, the underlying molecular mechanisms are still elusive. Recently, the pathogenic role of NLRP3 inflammasome in mediating renal tubular damage was identified while its role in podocyte injury still needs evidence. Thus the present study was undertaken to investigate the role of NLRP3 inflammasome in Aldo-induced podocyte damage. In vitro, exposure of podocytes to Aldo enhanced NLRP3, caspase-1 and IL-18 expressions in dose- and time-dependent manners, indicating an activation of NLRP3 inflammasome, which was significantly blocked by a mineralocorticoid receptor antagonist Eplerenone (EPL) or an antioxidant NAC...
January 4, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28045409/turkish-registry-for-diagnosis-and-treatment-of-acute-heart-failure-taktik-study
#8
Mehmet Eren, Mehdi Zoghi, Mustafa Tuncer, Yüksel Çavuşoğlu, Recep Demirbağ, Mahmut Şahin, Osman Akın Serdar, Ersel Onrat, Haşim Mutlu, Dursun Dursunoğlu, Mehmet Birhan Yılmaz, Ahmet Temizhan
OBJECTIVE: The goal of this study was to develop a national database of patients hospitalized in Turkey with acute heart failure (AHF) using evaluations of diagnostic and therapeutic approaches. METHODS: Patient data were collected using an Internet-based survey. A total of 588 patients were enrolled from 36 participating medical centers across the country. RESULTS: Mean age was 62±13 years and 38% of the patients were female. Ratio of de novo AHF to study cohort was 24%...
December 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/27992114/the-role-of-spironolactone-on-myocardial-oxidative-stress-in-rat-model-of-streptozotocin-induced-diabetes
#9
Fadia Mayyas, Karem H Alzoubi, Ruwidah Bonyan
BACKGROUND: Diabetes mellitus (DM) is linked to cardiovascular diseases development and progression. Aldosterone contributes to cardiac oxidative stress and remodeling. AIM: to evaluate the impact of spironolactone (an aldosterone antagonist) on markers of myocardial redox status in a rat model of streptozotocin (STZ) induced DM. METHOD: Adult Sprague Dawley rats were randomized into four groups; controls, spironolactone treated rats (Spir), diabetic rats (DM), and diabetic rats treated with spironolactone (DM+Spir) for 4 weeks...
December 19, 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/27958695/aldosterone-receptor-antagonists-decrease-mortality-and-cardiovascular-hospitalizations-in-chronic-heart-failure-chf-with-reduced-left-ventricular-ejection-fraction-lvef-but-not-in-chf-with-preserved-lvef-a-meta-analysis-of-randomized-controlled-trials
#10
Renato DE Vecchis, Carmelina Ariano
INTRODUCTION: Aldosterone receptor antagonists (ARAs) were introduced in the treatment of chronic heart failure (CHF), as a result of the demonstration of their protective effect on the failing heart. However, important questions remain unanswered regarding the clinical efficacy of the ARAs on the clinical and echocardiographic phenotype of heart failure, called heart failure with preserved left ventricular ejection fraction( HFpEF). EVIDENCE ACQUISITION: The aim of the present meta-analysis was to verify the impact of the ARAs on some hard endpoints, such as all - cause death and hospitalizations from cardiovascular cause, making a comparative evaluation of these outcomes in CHF patients with reduced left ventricular ejection fraction (HFREF) and in those with HFpEF, respectively...
December 13, 2016: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/27957627/blood-pressure-response-to-catheter-based-renal-sympathetic-denervation-in-severe-resistant-hypertension-data-from-the-greek-renal-denervation-registry
#11
C Tsioufis, A Ziakas, K Dimitriadis, P Davlouros, M Marketou, A Kasiakogias, C Thomopoulos, D Petroglou, D Tsiachris, M Doumas, E Skalidas, C Karvounis, D Alexopoulos, P Vardas, I Kallikazaros, C Stefanadis, V Papademetriou, D Tousoulis
BACKGROUND/INTRODUCTION: The efficacy of catheter-based renal sympathetic denervation (RDN) in terms of blood pressure (BP) reduction has been questioned, while "real-world" data from registries are needed. In this study, we report the complete set of 12-month data on office and ambulatory BP changes as well as the predictors for BP response to RDN from a national registry. METHODS: In 4 Greek hospital centers, 79 patients with severe drug-resistant hypertension (age 59 ± 10 years, 53 males, body mass index 33 ± 5 kg/m(2); office BP and 24-h ambulatory BP were 176 ± 15/95 ± 13 and 155 ± 14/90 ± 12 mmHg, respectively, 4...
December 12, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/27942913/genomic-and-rapid-effects-of-aldosterone-what-we-know-and-do-not-know-thus-far
#12
Milla Marques Hermidorff, Leonardo Vinícius Monteiro de Assis, Mauro César Isoldi
Aldosterone is the most known mineralocorticoid hormone synthesized by the adrenal cortex. The genomic pathway displayed by aldosterone is attributed to the mineralocorticoid receptor (MR) signaling. Even though the rapid effects displayed by aldosterone are long known, our knowledge regarding the receptor responsible for such event is still poor. It is intense that the debate whether the MR or another receptor-the "unknown receptor"-is the receptor responsible for the rapid effects of aldosterone. Recently, G protein-coupled estrogen receptor-1 (GPER-1) was elegantly shown to mediate some aldosterone-induced rapid effects in several tissues, a fact that strongly places GPER-1 as the unknown receptor...
December 12, 2016: Heart Failure Reviews
https://www.readbyqxmd.com/read/27941433/kidney-fibrosis-origins-and-interventions
#13
Thomas Vanhove, Roel Goldschmeding, Dirk Kuypers
All causes of renal allograft injury, when severe and/or sustained, can result in chronic histological damage of which interstitial fibrosis and tubular atrophy (IF/TA) are dominant features. Unless a specific disease process can be identified, what drives IF/TA progression in individual patients is often unclear. In general, clinicopathological factors known to predict and drive allograft fibrosis include graft quality, inflammation (whether 'nonspecific' or related to a specific diagnosis), infections such as polyomavirus-associated nephropathy, calcineurin inhibitors and genetic factors...
December 8, 2016: Transplantation
https://www.readbyqxmd.com/read/27934887/aldosterone-induces-rapid-sodium-intake-by-a-nongenomic-mechanism-in-the-nucleus-tractus-solitarius
#14
Hu Qiao, Bo Hu, Hong Zhou, Jianqun Yan, Ru Jia, Bo Lu, Bo Sun, Xiao Luo, Yuanyuan Fan, Nan Wang
The purpose of this study was to determine whether aldosterone has a rapid action in the nucleus tractus solitarius (NTS) that increases sodium intake, and to examine whether this effect of aldosterone, if present, is mediated by G protein-coupled estrogen receptor (GPER). Adult male Sprague-Dawley rats with a stainless-steel cannula in the NTS were used. Aldosterone was injected into the NTS at the doses of 1, 5, 10 and 20 ng 0.1 μl(-1). A rapid dose-related increase of 0.3 M NaCl intake was induced within 30 min and this increase was not suppressed by the mineralocorticoid receptor (MR) antagonist spironolactone (10 ng 0...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27915044/a-novel-aldosterone-synthase-inhibitor-ameliorates-mortality-in-pressure-overload-mice-with-heart-failure
#15
Shinji Furuzono, Masaki Meguro, Satoru Miyauchi, Shinichi Inoue, Tsuyoshi Homma, Keisuke Yamada, Yoh-Ichi Tagawa, Futoshi Nara, Takahiro Nagayama
It has been elucidated that mineralocorticoid receptor antagonists reduce mortality in patients with congestive heart failure and post-acute myocardial infarction. A direct inhibition of aldosterone synthase (CYP11B2) is also expected to have therapeutic benefits equal in quality to mineralocorticoid receptor antagonists in terms of reducing mineralocorticoid receptor signaling. Therefore, we have screened our chemical libraries and identified a novel and potent aldosterone synthase inhibitor, 2,2,2-trifluoro-1-{4-[(4-fluorophenyl)amino]pyrimidin-5-y}-1-[1-(methylsulfonyl)piperidin-4-yl]ethanol (compound 1), by lead optimization...
November 30, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27914612/dexamethasone-induced-diuresis-is-associated-with-inhibition-of-the-renin-angiotensin-aldosterone-system-in-rats
#16
Chao Liu, Ning Ge, Jian-Long Zhai, Jian-Xin Zhang
In heart failure (HF) patients, diuretics remain the cornerstone of therapy to relieve fluid retention. However, the resulting volume loss activates the renin-angiotensin-aldosterone system (RAAS), which blunts the decline in volume depletion and blood pressure. RAAS activation, in turn, compromises the diuretic decongesting effect. Although corticosteroids can induce potent diuresis in HF patients, the effects of corticosteroids on RAAS activation remain unclear. Therefore, we assessed the effects of dexamethasone (Dex) on urine output and plasma angiotensin II and aldosterone levels in rats following water deprivation-induced dehydration, following induction of chronic HF (CHF), and following induction of CHF and volume expansion therapy...
December 2016: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/27912902/evolution-of-the-clinical-profile-of-patients-with-acute-heart-failure-treated-in-spanish-emergency-departments
#17
R Escoda, Ò Miró, F J Martín-Sánchez, J Jacob, P Herrero, V Gil, J M Garrido, M J Pérez-Durá, M Fuentes, P Llorens
OBJECTIVE: To analyse the changes in epidemiology, outpatient and emergency department clinical care, and outcomes of patients treated for acute heart failure (AHF) in Spanish hospital emergency departments (HEDs) between 2007 and 2014. METHOD: A multicentre cohort study was conducted that consecutively included patients with AHF diagnosed in 9HEDs during 4 periods (2007, 2009, 2011 and 2014). The study analysed the changes observed in 20 variables corresponding to baseline data, outpatient care and emergency care data and outcome data...
November 29, 2016: Revista Clínica Española
https://www.readbyqxmd.com/read/27909476/atrial-fibrillation-and-risk-of-dementia-cognitive-decline
#18
REVIEW
Anand D Shah Md, Faisal M Merchant Md, David B Delurgio Md
Emerging evidence suggests a link between atrial fibrillation and subsequent development of dementia. While a majority of risk can be attributed to cardioembolic stroke secondary to atrial fibrillation, additional risk is apparent, and may be driven by vascular inflammation and changes in cerebral perfusion. Medical therapies including anticoagulation, statin therapy, and angiotensin-renin-aldosterone axis antagonists may reduce dementia risk. Procedural therapies such as atrial fibrillation catheter ablation and left atrial appendage closure may also prove to be important mediators of acute and long-term risk...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27899856/effect-of-spironolactone-on-plasma-apelin-12-levels-in-patients-with-chronic-systolic-heart-failure
#19
Mustafa Topuz, Mehmet Cosgun, Oğuz Akkuş, Atilla Bulut, Omer Sen, Ayşe Nur Topuz, Murat Caylı
BACKGROUND: The aim of this study was to determine whether spironolactone therapy has an effect on serum apelin-12 levels in heart failure with reduced ejection fraction (HFrEF) patients. METHODS: Eighty outpatients previously diagnosed with HFrEF were enrolled in the current study. Included patients were taking only standard heart failure therapy (ST) (angiotensin converting enzyme or angiotensin receptor blocker, beta-blockers, loop diuretics and anticoagulant or antiagregan agents) without a mineralocorticoid receptor antagonists (MRA) because of its side effects, and were designated the non-MRA group; those patients taking 25 mg/daily spironolactone in addition to the ST were deemed the MRA group...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27893293/prevelence-of-primary-aldosteronism-in-an-urban-hypertensive-population
#20
Sandi-Jo Galati, Khadeen C Cheesman, Ryan Springer-Miller, Sarah M Hopkins, Lawrence Krakoff, Emilia Bagiella, Rachel A Zhuk, Tiffany K Ying, Chelsey Amer, Michael K Boyajian, W B Inabnet, Alice C Levine
OBJECTIVE: To determine the prevalence of primary aldosteronism (PA) in hypertensive patients presenting to the primary care clinic at The Mount Sinai Hospital, regardless of the degree of hypertension and to identify clinical criteria that should prompt screening for PA. METHODS: An aldosterone:renin ratio (ARR, cutoff ≥20, with plasma aldosterone concentration [PAC] ≥10 and suppressed renin) was used to prospectively screen 296 hypertensive patients (blood pressure [BP] ≥140/90) over the age of 18 from August 2012 through May 2013...
November 2016: Endocrine Practice
keyword
keyword
10485
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"