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https://www.readbyqxmd.com/read/28938457/the-association-of-estrogen-receptor-%C3%AE-gene-variation-with-salt-sensitive-blood-pressure
#1
Worapaka Manosroi, Jia Wei Tan, Chevon M Rariy, Bei Sun, Mark O Goodarzi, Aditi R Saxena, Jonathan S Williams, Luminita H Pojoga, Jessica Lasky-Su, Jinrui Cui, Xiuqing Guo, Kent D Taylor, Yii-Der I Chen, Anny H Xiang, Willa A Hsueh, Leslie J Raffel, Thomas A Buchanan, Jerome I Rotter, Gordon H Williams, Ellen W Seely
Context: Hypertension in young women is uncommon compared to young men and older women. Estrogen appears to protect most women against hypertension with incidence increasing after menopause. Since some premenopausal women develop hypertension, estrogen may play a different role in these women. Genetic variations in the estrogen receptor (ER) are associated with cardiovascular disease. ER-β, encoded by ESR2, is the ER predominantly expressed in vascular smooth muscle. Objective: To determine an association of single nucleotide polymorphisms (SNPs) in ESR2 with salt-sensitivity of blood pressure (SSBP) and estrogen status in women...
September 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938442/angiotensin-ii-causes-beta-cell-dysfunction-through-an-er-stress-induced-pro-inflammatory-response
#2
Stanley M H Chan, Yeh-Siang Lau, Alyson A Miller, Jacqueline M Ku, Simon Potocnik, Ji-Ming Ye, Owen L Woodman, Terence P Herbert
The metabolic syndrome is associated with an increase in the activation of renin angiotensin system (RAS) and inhibition of RAS reduces the incidence of new onset diabetes. Importantly, angiotensin II (AngII), independently of its vasoconstrictor action causes beta-cell inflammation and dysfunction, which may be an early step in the development of type-2 diabetes. The aim of this study was to determine how AngII causes beta cell dysfunction. Islets of Langerhans were isolated from C57BL/6J mice that had been infused with AngII in the presence or absence of taurine-conjugated ursodeoxycholic acid (TUDCA) and effects on ER stress, inflammation and beta cell function determined...
August 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28935640/attenuation-of-pulmonary-ace2-activity-impairs-inactivation-of-des-arg9-bradykinin-bkb1r-axis-and-facilitates-lps-induced-neutrophil-infiltration
#3
Chhinder P Sodhi, Christine Wohlford-Lenane, Yukihiro Yamaguchi, Thomas Prindle, William B Fulton, Sanxia Wang, Paul B McCray, Mark C Chappell, David J Hackam, Hongpeng Jia
Angiotensin converting enzyme 2 (ACE2) is a terminal carboxypeptidase with important functions in the renin angiotensin system and plays a critical role in inflammatory lung diseases. ACE2 cleaves single terminal residues from several bioactive peptides such as angiotensin II. However, few of its substrates in the respiratory tract have been identified and the mechanism underlying the role of ACE2 in inflammatory lung disease has not been fully characterized. In an effort to identify biological targets of ACE2 in the lung, we tested its effects on des-arg9 bradykinin (DABK) in airway epithelial cells based upon a hypothesis that DABK is a biological substrate of ACE2 in the lung and ACE2 plays an important role in the pathogenesis of acute lung inflammation partly through modulating DABK/BKB1R axis signaling...
September 21, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28934817/aldosterone-to-renin-ratio-as-a-screening-instrument-for-primary-aldosteronism-in-a-middle-aged-population-with-atrial-fibrillation
#4
Georgios Mourtzinis, Ahmad Ebrahimi, Helena Gustafsson, Gudmundur Johannsson, Karin Manhem
Atrial fibrillation seems to be overrepresented among patients with primary aldosteronism. The aim of this study was to determine the usefulness of aldosterone to renin ratio as a screening instrument for primary aldosteronism in an atrial fibrillation population with relatively low cardiovascular risk profile. A total of 149 patients <65 years and with history of AF were screened for primary aldosteronism using aldosterone to renin ratio. Pathologically increased aldosterone to renin ratio (>65 pmol/mIU) was found in 15 participants (10...
September 21, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28933306/diet-bioactive-compounds-implications-for-oxidative-stress-and-inflammation-in-the-vascular-system
#5
Morena Gabriele, Laura Pucci
BACKGROUND AND OBJECTIVE: Increasing evidence has demonstrated that dietary products and their active components are independently or jointly responsible for the apparent reduction of the cardiovascular diseases (CVDs) risk. DISCUSSION: Nowadays, there is a growing attention in the use of nutraceuticals as a new approach for the prevention and management of many diseases, as well as for controlling rising of chronic illnesses with minimal side effects. Food-derived peptides, as well as peptide-rich protein hydrolysates, represent new and valuable tools for the prevention of metabolic and cardiovascular diseases, acting as modulators of oxidative stress, inflammation, and overactivity of the renin-angiotensin system (RAS)...
September 21, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28930524/hypertension-and-cardiometabolic-disease
#6
Ivan Tasic, Dragan Lovic
Hypertension has  a central role in cardiometabolic disease and is usually associated with  metabolic disorders, such as insulin resistance, obesity, and dyslipidemia. Hyperinsulinemia may increase cardiovascular (CV) risk through its promotion of hypertension, which is possibly a result of chronic enhancement of sympathetic nervous system activity, stimulation of the renin-angiotensin-aldosterone system leading to increased renal tubular sodium reabsorption, modulating cation transport, or inducing vascular smooth muscle cell hypertrophy...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28929450/intrarenal-angiotensin-converting-enzyme-the-old-and-the-new
#7
REVIEW
Silas Culver, Caixia Li, Helmy M Siragy
PURPOSE OF REVIEW: The intrarenal renin-angiotensin-aldosterone system (RAS) is an independent paracrine hormonal system with an increasingly prominent role in hypertension and renal disease. Two enzyme components of this system are angiotensin-converting enzyme (ACE) and more recently discovered ACE2. The purpose of this review is to describe recent discoveries regarding the roles of intrarenal ACE and ACE2 and their interaction. RECENT FINDINGS: Renal tubular ACE contributes to salt-sensitive hypertension...
September 19, 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28928410/ang-1-7-is-an-endogenous-%C3%AE-arrestin-biased-agonist-of-the-at1-receptor-with-protective-action-in-cardiac-hypertrophy
#8
Larissa B Teixeira, Lucas T Parreiras-E-Silva, Thiago Bruder-Nascimento, Diego A Duarte, Sarah C Simões, Rafael M Costa, Deisy Y Rodríguez, Pedro A B Ferreira, Carlos A A Silva, Emiliana P Abrao, Eduardo B Oliveira, Michel Bouvier, Rita C Tostes, Claudio M Costa-Neto
The renin-angiotensin system (RAS) plays a key role in the control of vasoconstriction as well as sodium and fluid retention mediated mainly by angiotensin (Ang) II acting at the AT1 receptor (AT1R). Ang-(1-7) is another RAS peptide, identified as the endogenous ligand of the Mas receptor and known to counterbalance many of the deleterious effects of AngII. AT1R signaling triggered by β-arrestin-biased agonists has been associated to cardioprotection. Because position 8 in AngII is important for G protein activation, we hypothesized that Ang-(1-7) could be an endogenous β-arrestin-biased agonist of the AT1R...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28925860/pharmacologic-and-perioperative-considerations-for-antihypertensive-medications
#9
Sher-Lu Pai, Ryan M Chadha, Joan M Irizarry Alvarado, Johnathan Ross Renew, Stephen Aniskevich
BACKGROUND: As the prevalence of hypertension continues to increase, physicians routinely encounter patients preoperatively receiving one or more cardiovascular medications to manage hypertension. Thus, the physician's knowledge of perioperative antihypertensive medication management is crucial to ensure patient safety. OBJECTIVE: We discuss the decisions to continue or stop antihypertensive medications to reduce the risk of perioperative complications. METHOD: We conducted a review of the original research studies, review articles, and editorials present on PubMed within the past 60 years...
September 18, 2017: Current Clinical Pharmacology
https://www.readbyqxmd.com/read/28924583/screening-for-primary-aldosteronism-using-the-newly-developed-ids-isys%C3%A2-automated-assay-system
#10
P M O'Shea, T P Griffin, G A Browne, N Gallagher, J J Brady, M C Dennedy, M Bell, D Wall, M Fitzgibbon
BACKGROUND: The recommended approach to screening for primary aldosteronism (PA) in at-risk populations is to determine the ratio of aldosterone concentration (serum (SAC)/plasma (PAC)) to renin measured in plasma as activity (PRA) or concentration (DRC). However, lack of assay standardisation mandates the need for method-specific decision thresholds and clinical validation in the local population. AIM: The study objective was to establish method-specific aldosterone: renin ratio (ARR) cut-offs for PA in men and women using the IDS-iSYS® assay system (IDS plc)...
April 2017: Pract Lab Med
https://www.readbyqxmd.com/read/28923913/variations-in-microrna-25-expression-influence-the-severity-of-diabetic-kidney-disease
#11
Yunshuang Liu, Hongzhi Li, Jieting Liu, Pengfei Han, Xuefeng Li, He Bai, Chunlei Zhang, Xuelian Sun, Yanjie Teng, Yufei Zhang, Xiaohuan Yuan, Yanhui Chu, Binghai Zhao
Diabetic nephropathy is characterized by persistent albuminuria, progressive decline in GFR, and secondary hypertension. MicroRNAs are dysregulated in diabetic nephropathy, but identification of the specific microRNAs involved remains incomplete. Here, we show that the peripheral blood from patients with diabetes and the kidneys of animals with type 1 or 2 diabetes have low levels of microRNA-25 (miR-25) compared with those of their nondiabetic counterparts. Furthermore, treatment with high glucose decreased the expression of miR-25 in cultured kidney cells...
September 18, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28921056/oxidative-stress-in-atherosclerosis
#12
REVIEW
Ajoe John Kattoor, Naga Venkata K Pothineni, Deepak Palagiri, Jawahar L Mehta
PURPOSE OF REVIEW: Atherosclerosis is now considered a chronic inflammatory disease. Oxidative stress induced by generation of excess reactive oxygen species has emerged as a critical, final common mechanism in atherosclerosis. Reactive oxygen species (ROS) are a group of small reactive molecules that play critical roles in the regulation of various cell functions and biological processes. Although essential for vascular homeostasis, uncontrolled production of ROS is implicated in vascular injury...
September 18, 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28919716/palatability-and-physical-properties-of-potassium-binding-resin-rdx7675-comparison-with-sodium-polystyrene-sulfonate
#13
Vanessa Zann, John McDermott, Jeffrey W Jacobs, James P Davidson, Fangling Lin, Paul Korner, Robert C Blanks, David P Rosenbaum
BACKGROUND: Hyperkalemia is a potentially life-threatening condition that patients with heart failure or chronic kidney disease, especially those taking renin-angiotensin-aldosterone system inhibitors, are at high risk of developing. Sodium polystyrene sulfonate (SPS), a current treatment, binds potassium within the gastrointestinal tract to reduce potassium absorption. However, poor palatability limits its long-term use. RDX7675, a novel potassium binder in development for the treatment of hyperkalemia, is a calcium salt of a reengineered polystyrene sulfonate-based resin designed to have enhanced palatability...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28919378/sudden-death-mechanisms-in-non-ischemic-cardiomyopathies-insights-gleaned-from-clinical-implantable-cardioverter-defibrillator-trials
#14
Benjamin A Steinberg, Siva K Mulpuru, James C Fang, Bernard J Gersh
Sudden cardiac death (SCD) represents a major cause of death among patients with heart failure. While scar-based, macro-reentrant ventricular tachycardia and ventricular fibrillation (VT/VF) is the primary etiology for SCD among patients with ischemic cardiomyopathy, a more diverse set of mechanisms and substrates are likely at play for the diverse group of patients characterized by non-ischemic, dilated cardiomyopathy (NICM). These causes may include scar-based re-entry, but also neurohormonal stimulation (sympathetic, parasympathetic, renin-angiotensin-aldosterone), inflammation, and non-arrhythmic processes occurring in the context of a genetic predisposition...
September 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28919108/the-renin-angiotensin-system-regulates-neurodegeneration-in-a-mouse-model-of-optic-neuritis
#15
Xiaoli Guo, Kazuhiko Namekata, Atsuko Kimura, Chikako Harada, Takayuki Harada
The major role of the renin-angiotensin system (RAS), including that of angiotensin II (Ang II), the principal effector molecule, in the cardiovascular system is well known. Increasing evidence suggests that the RAS also plays a role in the development of autoimmune diseases. Optic neuritis (ie, inflammation of the optic nerve, with retinal ganglion cell [RGC] loss) is strongly associated with multiple sclerosis (MS). Herein, we investigated the effects of candesartan, an Ang II receptor antagonist, on optic neuritis in experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
September 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28918839/prostaglandin-e2-induces-prorenin-dependent-activation-of-pro-renin-receptor-and-upregulation-of-cyclooxygenase-2-in-collecting-duct-cells
#16
Nicolás Salinas-Parra, Cristian Reyes-Martínez, Minolfa C Prieto, Alexis A Gonzalez
BACKGROUND: Prostaglandin E2 (PGE2) regulates renin expression in renal juxtaglomerular cells. PGE2 acts through E-prostanoid (EP) receptors in the renal collecting duct (CD) to regulate sodium and water balance. CD cells express EP1 and EP4, which are linked to protein kinase C (PKC) and PKA downstream pathways, respectively. Previous studies showed that the presence of renin in the CD, and that of PKC and PKA pathways, activate its expression. The (pro)renin receptor (PRR) is also expressed in CD cells, and its activation enhances cyclooxygenase-2 (COX-2) through extracellular signal-regulated kinase (ERK)...
September 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28918310/effect-of-eplerenone-on-markers-of-bone-turnover-in-patients-with-primary-hyperparathyroidism-the-randomized-placebo-controlled-epath-trial
#17
Nicolas Verheyen, Martin R Grübler, Andreas Meinitzer, Christian Trummer, Verena Schwetz, Karin Amrein, Hans P Dimai, Winfried März, Cristiana Catena, Dirk von Lewinski, Jakob Voelkl, Ioana Alesutan, Astrid Fahrleitner-Pammer, Helmut Brussee, Stefan Pilz, Andreas Tomaschitz
Mineralocorticoid receptor (MR) antagonism may affect bone turnover via direct and indirect pathways involving parathyroid hormone, but randomized controlled trials are lacking. In a pre-specified analysis of the "Eplerenone in primary hyperparathyroidism" placebo-controlled, randomized trial (ISRCTN 33941607), effects of eight weeks MR-blockade with eplerenone on bone turnover markers in 97 patients with primary hyperparathyroidism were tested. Mean age was 67.5±9.5years, and 76 (78.4%) were females. In analysis of covariance with adjustment for baseline values, eplerenone had no significant effect on isoform 5b of the tartrate-resistant acid phosphatase (TRAP), beta-crosslaps, N-terminal propeptide of procollagen type 1 (P1NP), osteocalcin and bone-specific alkaline phosphatase...
September 14, 2017: Bone
https://www.readbyqxmd.com/read/28916557/study-of-fall-risk-increasing-drugs-in-elderly-patients-before-and-after-a-bone-fracture
#18
Mónica Beunza-Sola, Ángel M Hidalgo-Ovejero, Jon Martí-Ayerdi, José Germán Sánchez-Hernández, Miguel Menéndez-García, Serafín García-Mata
BACKGROUND: Accidental falls have a significant economic and human impact. The use of certain drugs is one of the modifiable risk factors associated with these events. OBJECTIVE: The aim of this study was to determine the prevalence of use and to explore changes in treatment with fall-related drugs in patients over 65 years of age admitted as a result of a fall-related fracture. METHODS: Observational and prospective study performed in a tertiary level hospital...
September 15, 2017: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28915321/regulation-and-functions-of-the-renin-angiotensin-system-in-white-and-brown-adipose-tissue
#19
Mandana Pahlavani, Nishan S Kalupahana, Latha Ramalingam, Naima Moustaid-Moussa
The renin angiotensin system (RAS) is a major regulator of blood pressure, fluid, and electrolyte homeostasis. RAS precursor angiotensinogen (Agt) is cleaved into angiotensin I (Ang I) and II (Ang II) by renin and angiotensin converting enzyme (ACE), respectively. Major effects of Ang II, the main bioactive peptide of this system, is mediated by G protein coupled receptors, Angiotensin Type 1 (AGTR1, AT1R) and Type 2 (AGTR2, AT2R) receptors. Further, the discovery of additional RAS peptides such as Ang 1-7 generated by the action of another enzyme ACE2 identified novel functions of this complex system...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28915228/analysis-of-the-genes-involved-in-mendelian-forms-of-low-renin-hypertension-in-chinese-early-onset-hypertensive-patients
#20
Kai Liu, Fang Qin, Xiaolu Sun, Yang Zhang, Jizheng Wang, Yajie Wu, Wenjun Ma, Wei Wang, Xueyi Wu, Ying Qin, Huimin Zhang, Xianliang Zhou, Haiying Wu, Rutai Hui, Yubao Zou, Xiongjing Jiang, Lei Song
BACKGROUND: The study aimed to analyze genes involved in Mendelian forms of low-renin hypertension in Chinese early-onset hypertensive patients. METHODS: A panel of nine genes, namely SCNN1B, SCNN1G, WNK1, WNK4, KLHL3, CUL3, nuclear receptor subfamily 3, group C (NR3C)1, NR3C2, and HSD11B2 were screened by targeted resequencing in 260 Chinese early-onset hypertensive patients. Additionally, exon 13 of both SCNN1B and SCNN1G was sequenced in an independent cohort of 506 Chinese early-onset hypertensive patients...
September 14, 2017: Journal of Hypertension
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