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https://www.readbyqxmd.com/read/28545792/living-alone-and-activation-of-the-renin-angiotensin-aldosterone-system-differential-effects-depending-on-alexithymic-personality-features
#1
Jan Terock, Anke Hannemann, Deborah Janowitz, Henry Völzke, Matthias Nauck, Harald-Jürgen Freyberger, Henri Wallaschofski, Hans Jörgen Grabe
OBJECTIVE: Living alone is considered as a chronic stress factor predicting different health conditions and particularly cardiovascular disease (CVD). Alexithymia is associated with increased psychological distress, less social skills and fewer close relationships, making alexithymic subjects particularly susceptible to chronic stress imposed by "living alone". Only few studies investigated the renin-angiotensin-aldosterone-system (RAAS) activity in response to chronic stress. We aimed at evaluating the effects of "living alone" as a paradigm for chronic stress on RAAS activity and putatively differential effects depending on alexithymic personality features...
May 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28541811/future-drug-discovery-in-renin-angiotensin-aldosterone-system-intervention
#2
Maria Tamargo, Juan Tamargo
Renin-angiotensin- aldosterone system inhibitors (RAASIs), including angiotensin-converting enzyme inhibitors, angiotensin AT1 receptor blockers and mineralocorticoid receptor antagonists (MRAs), are the cornerstone for the treatment of cardiovascular and renal diseases. Areas covered: The authors searched MEDLINE, PubMed and ClinicalTrials.gov to identify eligible full-text English language papers. Herein, the authors discuss AT2-receptor agonists and ACE2/angiotensin-(1- 7)/Mas-receptor axis modulators, direct renin inhibitors, brain aminopeptidase A inhibitors, biased AT1R blockers, chymase inhibitors, multitargeted drugs, vaccines and aldosterone receptor antagonists as well as aldosterone synthase inhibitors...
May 25, 2017: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/28513286/azelnidipine-is-a-useful-medication-for-the-treatment-of-heart-failure-preserved-ejection-fraction
#3
Shunsuke Kiuchi, Shinji Hisatake, Takayuki Kabuki, Takashi Oka, Shintaro Dobashi, Takahiro Fujii, Takanori Ikeda
BACKGROUND: The optimal therapy in patients with heart failure preserved ejection fraction (HFpEF) and hypertension (HT) has not been revealed. The beta blocker (BB) and the renin angiotensin aldosterone system inhibitor (RAAS-I) are recommend as class IIa in patients with HFpEF. The calcium channel blocker (CCB), a major anti-hypertensive drugs in Japan, is also recommend as class IIa in patients with HFpEF. However, the difference between azelnidipine, an L type CCB, and cilnidipine, an N type CCB, is unclear...
May 17, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28513230/association-of-renin-angiotensin-aldosterone-system-gene-polymorphisms-with-left-ventricular-hypertrophy-in-patients-with-heart-failure-with-preserved-ejection-fraction-a-case-control-study
#4
Ehsan Bahramali, Negar Firouzabadi, Mona Rajabi, Alireza Manafi, Mehrdad Zarghami, Seyyed Mohammad Mousavi, Javad Jamshidi
BACKGROUND: Heart failure with preserved ejection fraction (HFpEF) has close ties with hypertension, though risk factors to the development of HFpEF in hypertensive patients are not fully understood. Left ventricular hypertrophy (LVH) signifies the susceptibility toward diastolic heart dysfunction, and genetic determinants of LVH as a result may serve as risk predictors for HFpEF in hypertension. We investigated the role of three renin-angiotensin-aldosterone system (RAAS) gene polymorphisms in the development of LVH in hypertensive patients with a diagnosis of HFpEF...
May 17, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28511711/sglt2-inhibitors-a-novel-choice-for-the-combination-therapy-in-diabetic-kidney-disease
#5
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/28509399/association-of-renin-angiotensin-antagonists-with-adverse-perioperative-events-in-patients-undergoing-elective-orthopaedic-surgery-a-case-control-study
#6
Amith Zainudheen, Ian A Scott, Xenia Caney
BACKGROUND: Renin angiotensin antagonists (RAAs) may block protective vasopressor responses during surgery. Evidence linking RAAs with intraoperative hypotension and perioperative adverse events is conflicting. METHODS: Retrospective case-control study of 258 consecutive patients who underwent elective total knee or hip replacement between January 1(st) 2013 and August 31(st) 2016, and who were chronically prescribed a single blood pressure lowering agent up to the time of surgery...
May 16, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28507470/evaluating-the-relationship-of-blood-pressure-plasma-angiotensin-peptides-and-aldosterone-with-cognitive-functions-in-patients-with-hypertension
#7
Selçuk Sen, Nermin Gürel, Baran Ufuktepe, Zeynep Günes Özünal, Çagla Büyüklü, Yagiz Üresin
Renin Angiotensin Aldosterone System (RAAS) plays an important role in the development of hypertension. On the other hand, hypertension is a well-known and independent risk factor for cognitive impairment. The aim of the present study was to evaluate the relationship of blood pressure control, plasma angiotensin peptides and aldosterone with cognitive functions. Forty-one patients who were under treatment with the same antihypertensive medications for at least three months were included in the study. Plasma angiotensin II, angiotensin 1-7, angiotensin IV, and aldosterone concentrations were analyzed using an enzyme-linked immunosorbent assay (ELISA)...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28500602/a-new-mouse-model-for-introduction-of-aortic-aneurysm-by-implantation-of-deoxycorticosterone-acetate-pellets-or-aldosterone-infusion-in-the-presence-of-high-salt
#8
Shu Liu, Ming C Gong, Zhenheng Guo
Dysfunction of the renin-angiotensin-aldosterone system (RAAS) has been implicated in the etiologies of many cardiovascular diseases, including aortic aneurysm. In particular, the infusion of angiotensin II (Ang II) in the apolipoprotein E-deficient mice (apoE-/-) and low density lipoprotein receptor knockout mice (LDLR-/-) to induce aortic aneurysm has been extensively used in the field. In contrast, whether aldosterone (Aldo), an essential component of RAAS and a downstream effector of Ang II, is involved in aortic aneurysm is largely unknown...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28500594/methods-for-studying-the-role-of-raas-in-the-modulation-of-vascular-repair-relevant-functions-of-stem-progenitor-cells
#9
Yagna P R Jarajapu
In recent years, previously unknown functions have been conferred to the RAAS and have been explored in mechanistic studies and disease models. Implication of bone marrow stem/progenitor cells in the cardiovascular protective or detrimental effects of RAAS is a prominent advancement because of the translational significance. Selected members of RAAS are now known to modulate migration, proliferation, and mobilization of bone marrow cells in response to ischemic insult, which are sensitive indicators of vascular repair-relevant functions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28500591/a-brief-introduction-into-the-renin-angiotensin-aldosterone-system-new-and-old-techniques
#10
Sean E Thatcher
The renin-angiotensin-aldosterone system (RAAS) is a complex system of enzymes, receptors, and peptides that help to control blood pressure and fluid homeostasis. Techniques in studying the RAAS can be difficult due to such factors as peptide/enzyme stability and receptor localization. This paper gives a brief account of the different components of the RAAS and current methods in measuring each component. There is also a discussion of different methods in measuring stem and immune cells by flow cytometry, hypertension, atherosclerosis, oxidative stress, energy balance, and other RAAS-activated phenotypes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28497339/follow-up-of-antihypertensive-therapy-improves-blood-pressure-control-results-of-hyt-hypertension-survey-follow-up
#11
F Fici, G Seravalle, N Koylan, I Nalbantgil, N Cagla, Y Korkut, F Quarti-Trevano, W Makel, G Grassi
INTRODUCTION: Although improved during the past few years, blood pressure control remains sub optimal. AIM: The impact of follow-up assessment on blood pressure control was evaluated in a group of patients of the HYT (HYperTension survey), treated with a combination of different dihydropyridine calcium-channel blockers (CCBs regimen) and inhibitors of renin-angiotensin-aldosterone system (RAAS) and with uncontrolled blood pressure. This was obtained assessing (a) the rate of blood pressure control at 3 and 6 months of follow-up in the whole group of patients, (b) the rate of blood pressure control and the average blood pressure values in subjects treated with different DHP-CCBs regimen...
May 11, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28488548/angiotensinogen-agt-gene-missense-polymorphisms-rs699-and-rs4762-and-diabetic-nephropathy-in-caucasians-with-type-2-diabetes-mellitus
#12
Jana Makuc, Maja Šeruga, Matej Završnik, Ines Cilenšek, Daniel Petrovič
Gene polymorphisms associated with the renin-angiotensin-aldosterone system (RAAS) have been extensively studied in diabetic nephropathy (DN) patients, due to therapeutic potential of targeting the RAAS and slowing down the disease progression. The aim of our study was to examine the association between angiotensinogen (AGT) gene polymorphisms (rs699 and rs4762) and DN in Caucasians with type 2 diabetes mellitus (T2DM). A total of 651 unrelated Slovenian (Caucasian) T2DM patients were tested for AGT rs699 and rs4762 polymorphisms using a novel fluorescence-based competitive allele-specific polymerase chain reaction (KASPar) assay...
May 10, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28488321/the-renin-angiotensin-aldosterone-system-in-greyhounds-and-non-greyhound-dogs
#13
J Martinez, C Kellogg, M C Iazbik, C G Couto, B M Pressler, T M Hoepf, M J Radin
BACKGROUND: The renin-angiotensin-aldosterone system (RAAS) regulates blood pressure, electrolyte homeostasis, and renal function. Blood pressure, serum sodium concentrations, and urinary albumin excretion are higher in Greyhounds than other purebred and mixed-breed dogs. HYPOTHESIS: Alterations in the RAAS in Greyhounds are associated with hemodynamic and clinicopathologic differences observed in the breed. ANIMALS: Clinically healthy Greyhound and non-Greyhound dogs consecutively enrolled as blood donors (n = 20/group)...
May 9, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28487869/a-curious-case-of-persistently-relapsing-hyperkalemia-in-an-esrd-patient-on-maintenance-hemodialysis-following-bioprosthetic-aortic-valve-replacement-a-potential-case-for-the-use-of-the-new-agent-patiromer-for-hyperkalemia-management
#14
Macaulay Amechi Chukwukadibia Onuigbo, Nneoma Agbasi, Fidelis Oguejiofor, Charles Odenigbo
Hyperkalemia is not uncommon in patients with end-stage renal disease (ESRD) on maintenance hemodialysis, often related to dietary indiscretion, following the prolonged inter-dialytic weekend interval in patients on thrice weekly hemodialysis treatments, and sometimes the adverse effects of medications such as RAAS blocking agents. Moreover, hyperkalemia following extended cardiac surgery can result from the use of high-potassium containing cardioplegic solutions used during cardiopulmonary bypass. Nevertheless, different from the foregoing, in the nephrology literature, there have been very rare reports of potentially life-threatening hyperkalemia following cardiac valve replacement procedure...
2017: Journal of Renal Injury Prevention
https://www.readbyqxmd.com/read/28483478/left-aberrant-subclavian-artery-systematic-study-in-adult-patients
#15
Paweł Tyczyński, Ilona Michałowska, Rafał Wolny, Piotr Dobrowolski, Hubert Łazarczyk, Justyna Rybicka, Piotr Hoffman, Adam Witkowski
BACKGROUND: Left aberrant subclavian artery (LASA), is a type of right aortic arch (RAA) branching, which takes-off distally to the right subclavian artery and usually crosses behind the esophagus to the left upper limb. Taking into account the rarity of RAA, LASA is much more rarely seen than the right aberrant subclavian artery (RASA) originating from the left aortic arch. However, RAA may be associated with much more frequent presence of LASA, than left aortic arch with RASA. Anatomical LASA characteristics were not described up to date...
April 25, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28483314/cardiovascular-and-diabetic-medications-that-cause-bradykinin-mediated-angioedema
#16
Stephanie N Hudey, Emma Westermann-Clark, Richard F Lockey
Medication-induced angioedema is a bradykinin-mediated process that results from increased production or decreased degradation of bradykinin. These reactions are documented for several cardiac medications including blockers of the renin-angiotensin-aldosterone system (RAAS). Other cardiovascular and diabetes medications further increase the risk of medication-induced angioedema, particularly with concomitant use of RAAS inhibitors. Dipeptidyl peptidase IV inhibitors are a class of oral diabetic agents that affect bradykinin and substance P degradation and therefore can lead to angioedema...
May 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28471687/the-dilemma-of-dual-renin-angiotensin-system-blockade-in-chronic-kidney-disease-why-beneficial-in-animal-experiments-but-not-in-the-clinic
#17
V Čertíková Chábová, L Červenka
Drugs interfering with the renin-angiotensin-aldosterone system (RAAS) improved the prognosis in patients with hypertension, heart failure, diabetes and chronic kidney disease. However, combining different drugs brought no further benefit while increasing the risk of hyperkalemia, hypotension and acute renal failure. This was so with combining angiotensin converting enzyme inhibitors (ACEi) and angiotensin II receptors type 1 antagonists (ARB). Dissimilarly, in animal disease models this dual therapy proved clearly superior to single drug treatment and became the optimal standard regime for comparison with other treatments...
May 4, 2017: Physiological Research
https://www.readbyqxmd.com/read/28467442/the-transcriptional-regulation-of-the-human-angiotensinogen-gene-after-high-fat-diet-is-haplotype-dependent-novel-insights-into-the-gene-regulatory-networks-and-implications-for-human-hypertension
#18
Anita Rana, Sudhir Jain, Nitin Puri, Meenakshi Kaw, Natalie Sirianni, Deniz Eren, Brahma Raju Mopidevi, Ashok Kumar
Single nucleotide polymorphisms (SNPs) in the human angiotensinogen (hAGT) gene may modulate its transcription and affect the regulation of blood pressure via activation of the renin-angiotensin aldosterone system (RAAS). In this regard, we have identified polymorphisms in the 2.5 Kb promoter of the hAGT gene that form two haplotype (Hap) blocks: -6A/G (-1670A/G, -1562C/T, -1561T/C) and -217A/G (-532T/C, -793A/G, -1074T/C & -1178G/A). hAGT gene with Hap -6A/-217A (Hap I) is associated with increased blood pressure whereas, Hap -6G/-217G (Hap II) is associated with normal blood pressure in human subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28454836/right-ventricular-dysfunction-in-tetralogy-of-fallot-inhibition-of-the-renin-angiotensin-aldosterone-system-redefine-trial-rationale-and-design-of-a-randomized-double-blind-placebo-controlled-clinical-trial
#19
Jouke P Bokma, Michiel M Winter, Esmée M Kornaat, Hubert W Vliegen, Arie P van Dijk, Joost P van Melle, Folkert J Meijboom, Martijn C Post, Jacqueline K Berbee, Aeilko H Zwinderman, Barbara J M Mulder, Berto J Bouma
Renin-angiotensin-aldosterone system (RAAS) inhibition with angiotensin II receptor blockers or angiotensin-converting enzyme inhibitors is beneficial in patients with acquired left ventricular dysfunction. Adult patients with tetralogy of Fallot (TOF) with right ventricular (RV) dysfunction are at high risk for heart failure, arrhythmias, and sudden cardiac death. However, the efficacy of RAAS inhibition has not been established in these patients. METHODS: The REDEFINE is an investigator-initiated, multicenter, prospective, randomized, double-blind, placebo-controlled trial to study the effects of the angiotensin II receptor blocker losartan (target dosage of 150 mg once daily) in adult patients with TOF...
April 2017: American Heart Journal
https://www.readbyqxmd.com/read/28454811/compliance-with-guideline-directed-therapy-in-diabetic-patients-admitted-with-acute-coronary-syndrome-findings-from-the-american-heart-association-s-get-with-the-guidelines-coronary-artery-disease-gwtg-cad-program
#20
Prakash Deedwania, Tushar Acharya, Kamal Kotak, Gregg C Fonarow, Christopher P Cannon, Warren K Laskey, W Frank Peacock, Wenqin Pan, Deepak L Bhatt
BACKGROUND: To evaluate and compare baseline characteristics, outcomes and compliance with guideline based therapy at discharge among diabetic and non-diabetic patients admitted with acute coronary syndromes (ACS). METHODS AND RESULTS: Study population consisted of 151,270 patients admitted with ACS from 2002 through 2008 at 411 sites participating in the American Heart Association's Get with the Guidelines (GWTG) program. Demographic variables, physical exam findings, laboratory data, left ventricular ejection fraction, length of stay, in-hospital mortality and discharge medications were compared between diabetic and non-diabetic patients...
May 2017: American Heart Journal
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