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Biology of natriuretic peptides

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https://www.readbyqxmd.com/read/28398362/-the-relationship-between-natriuretic-peptides-and-neprilysin-pathways-the-clinical-simplification-against-the-complexity-of-biological-systems
#1
Giuseppe Di Tano, Aldo Clerico
A large body of evidence supports the use of natriuretic peptides (brain natriuretic peptide [BNP] and N-terminal proBNP [NT-proBNP]) for the evaluation and management of patients with heart failure over time. Elevated values reflect an enhanced counterregulatory response to hemodynamic stress and are indicative of heart failure severity, thus predicting prognosis. The clinical relevance and result interpretation of natriuretic peptides for monitoring therapy are still debated, and our understanding of their complex nature is still far from being complete...
February 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28384411/kallikrein-kinin-system-as-the-dominant-mechanism-to-counteract%C3%A2-hyperactive-renin-angiotensin-system
#2
Domenico Regoli, Fernand Gobeil
The renin-angiotensin system (RAS) generates, maintains and makes worse hypertension and cardiovascular diseases (CVDs) through its biologically active component Angiotensin II (Ang II), that causes vasoconstriction, sodium retention and structural alterations of the heart and the arteries. A few endogenous vasodilators, kinins, natriuretic peptides and possibly angiotensin (1-7), exert opposite actions and may provide useful therapeutic agents. As endothelial autacoids, the kinins are potent vasodilators, active natriuretics and protectors of the endothelium...
April 6, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28337152/maintaining-the-phenotype-stability-of-chondrocytes-derived-from-mscs-by-c-type-natriuretic-peptide
#3
Quan Shi, Zhiyong Qian, Donghua Liu, Jie Sun, Juan Xu, Ximin Guo
Mesenchymal stem cells (MSCs) play a critical role in cartilage tissue engineering. However, MSCs-derived chondrocytes or cartilage tissues are not stable and easily lose the cellular and cartilage phenotype during long-term culture in vitro or implantation in vivo. As a result, chondrocytes phenotypic instability can contribute to accelerated ossification. Thus, it is a big challenge to maintain their correct phenotype for engineering hyaline cartilage. As one member of the natriuretic peptide family, C-type natriuretic peptide (CNP) is found to correlate with the development of the cartilage, affect the chondrocytes proliferation and differentiation...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28285069/sacubitril-valsartan-the-newest-addition-to-the-toolbox-for-guideline-directed-medical-therapy-of-heart-failure
#4
REVIEW
Jo E Rodgers
Sacubitril/valsartan combines a neprilysin inhibitor with an angiotensin receptor blocker. As an inhibitor of neprilysin, an enzyme that degrades biologically active natriuretic peptides, this first-in-class therapy increases levels of circulating natriuretic peptides, resulting in natriuretic, diuretic, and vasodilatory effects. In patients with chronic New York Heart Association class II-IV heart failure with reduced ejection fraction, the PARADIGM-HF trial demonstrated that sacubitril/valsartan significantly reduced the primary endpoint of cardiovascular mortality and heart failure hospitalization, compared with enalapril...
March 9, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28279423/alternative-biomarkers-for-combined-biology
#5
REVIEW
Yong-Hyun Kim, Jennifer Kirsop, Wai Hong Wilson Tang
Chemotherapy-related cardiac dysfunction (CRCD) has challenged clinicians to hesitate in using cardiotoxic agents such as anthracycline and several protein kinase inhibitors. As early detection of CRCD and timely cessation of cardiotoxic agents became a strategy to avoid CRCD, cardiac troponin and natriuretic peptide are measured to monitor cardiotoxicity; however, there are inconsistencies in their predictability of CRCD. Alternative biomarkers have been researched extensively for potential use as more sensitive and accurate biomarkers...
April 2017: Heart Failure Clinics
https://www.readbyqxmd.com/read/28275223/evaluation-of-eight-biomarkers-to-predict-short-term-mortality-in-patients-with-acute-severe-dyspnea
#6
Claire Ara-Somohano, Agnès Bonadona, Francoise Carpentier, Patricia Pavese, Aurélien Vesin, Rebecca Hamidfar-Roy, Clémence Minet, Gerald Vanzetto, Carole Schwebel, Jean F Timsit
BACKGROUND: Being able to better predict risk and optimal care for patients presenting with acute dyspnea is critical. Prognostic biomarkers are well known: amino-terminal pro-Btype Natriuretic Peptide, troponin, C-reactive protein, procalcitonin. Some were more recently developed: mid-regional pro-A-type natriuretic peptide (Mid Pro-ANP), mid-regional-proadrenomedullin (MR-proADM), pro-endothelin, copeptin. The aim of the paper was to evaluate prognostic value of clinical findings and 8 biomarkers in patients with severe acute dyspnea...
March 8, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28188250/mir30-galnt1-2-axis-mediated-glycosylation-contributes-to-the-increased-secretion-of-inactive-human-prohormone-for-brain-natriuretic-peptide-probnp-from-failing-hearts
#7
Yasuaki Nakagawa, Toshio Nishikimi, Koichiro Kuwahara, Aoi Fujishima, Shogo Oka, Takayoshi Tsutamoto, Hideyuki Kinoshita, Kazuhiro Nakao, Kosai Cho, Hideaki Inazumi, Hiroyuki Okamoto, Motohiro Nishida, Takao Kato, Hiroyuki Fukushima, Jun K Yamashita, Wino J Wijnen, Esther E Creemers, Kenji Kangawa, Naoto Minamino, Kazuwa Nakao, Takeshi Kimura
BACKGROUND: Recent studies have shown that plasma levels of the biologically inactive prohormone for brain natriuretic peptide (proBNP) are increased in patients with heart failure. This can contribute to a reduction in the effectiveness of circulating BNP and exacerbate heart failure progression. The precise mechanisms governing the increase in proBNP remain unclear, however. METHODS AND RESULTS: We used our recently developed, highly sensitive human proBNP assay system to investigate the mechanisms underlying the increase in plasma proBNP levels...
February 10, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28174389/-molecular-biology-for-surgical-treatment-of-lung-cancer
#8
Kenichi Suda, Tetsuya Mitsudomi
Progress in lung cancer research achieved during the last 10 years was summarized. These include identification of novel driver mutations and application of targeted therapies, resistance mechanisms to targeted therapies, and immunotherapy with immune checkpoint inhibitors. Molecular biology also affects the field of surgical treatment. Several molecular markers have been reported to predict benign/ malignant or stable/growing tumors, although far from clinical application. In perioperative period, there is a possibility of atrial natriuretic peptide to prevent cancer metastasis...
January 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28138984/plasma-volume-reduction-and-hematological-fluctuations-in-high-level-athletes-after-an-increased-training-load
#9
J Bejder, A B Andersen, J P Goetze, N J Aachmann-Andersen, N B Nordsborg
The time course of plasma volume (PV) reduction following an increased training load period is unknown and was investigated. The accompanying fluctuations in [Hb] and OFF-hr score were analyzed in the Athlete Biological Passport. Further, whether fluctuations in plasma albumin, soluble transferrin receptors (sTfR), and pro-atrial natriuretic peptide (proANP) concentrations correlate with PV fluctuations was investigated. Eleven high-level competitive cyclists were investigated for 3 weeks. After initial measurements in week 1, training load was increased ~250% in week 2 followed by a reversion to baseline training load in week 3...
January 30, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28134997/mass-transport-circulatory-system-with-emphasis-on-nonendothermic-species
#10
Dane A Crossley, Warren W Burggren, Carl L Reiber, Jordi Altimiras, Kenneth J Rodnick
Mass transport can be generally defined as movement of material matter. The circulatory system then is a biological example given its role in the movement in transporting gases, nutrients, wastes, and chemical signals. Comparative physiology has a long history of providing new insights and advancing our understanding of circulatory mass transport across a wide array of circulatory systems. Here we focus on circulatory function of nonmodel species. Invertebrates possess diverse convection systems; that at the most complex generate pressures and perform at a level comparable to vertebrates...
December 6, 2016: Comprehensive Physiology
https://www.readbyqxmd.com/read/28133468/changing-the-treatment-of-heart-failure-with-reduced-ejection-fraction-clinical-use-of-sacubitril-valsartan-combination
#11
REVIEW
Edgardo Kaplinsky
Despite significant therapeutic advances, patients with chronic heart failure (HF) remain at high risk of morbidity and mortality. Sacubitril valsartan (previously known as LCZ696) is a new oral agent approved for the treatment of symptomatic chronic heart failure in adults with reduced ejection fraction. It is described as the first in class angiotensin receptor neprilysin inhibitor (ARNI) since it incorporates the neprilysin inhibitor, sacubitril and the angiotensin II receptor antagonist, valsartan. Neprilysin is an endopeptidase that breaks down several vasoactive peptides including natriuretic peptides (NPs), bradykinin, endothelin and angiotensin II (Ang-II)...
November 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28120499/three-molecular-forms-of-atrial-natriuretic-peptides-quantitative-analysis-and-biological-characterization
#12
REVIEW
Chiaki Nagai-Okatani, Kenji Kangawa, Naoto Minamino
Atrial natriuretic peptide (ANP) is primarily produced in the heart tissue and plays a pivotal role in maintaining cardiovascular homeostasis in endocrine and autocrine/paracrine systems and has clinical applications as a biomarker and a therapeutic agent for cardiac diseases. ANP is synthesized by atrial cardiomyocytes as a preprohormone that is processed by a signal peptidase and stored in secretory granules as a prohormone. Subsequent proteolytic processing of ANP by corin during the secretion process results in a bioactive form consisting of 28 amino acid residues...
January 25, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28116728/isolation-and-culture-of-endothelial-cells-from-large-vessels
#13
Augusto C Montezano, Karla B Neves, Rheure A M Lopes, Francisco Rios
The endothelium, which is at the interface between circulating blood and the vascular wall, comprises a simple squamous layer of cells that lines the inner surface of all blood vessels. Endothelial cells are highly metabolically active and play an important role in many physiological functions, including control of vasomotor tone, blood cell trafficking, vascular permeability, and maintenance of vascular integrity (Mensah, Vascul Pharmacol 46(5):310-314, 2007; Yetik-Anacak and Catravas, Vascul Pharmacol 45(5):268-276, 2006)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28111138/biologic-variability-of-n-terminal-pro-brain-natriuretic-peptide-in-healthy-dogs-and-dogs-with-myxomatous-mitral-valve-disease
#14
Randolph L Winter, Ashley B Saunders, Sonya G Gordon, Jesse S Buch, Matthew W Miller
INTRODUCTION: To determine the biologic variability of N-terminal pro-brain natriuretic peptide (NTproBNP) in healthy dogs and dogs with various stages of myxomatous mitral valve disease (MMVD). ANIMALS: Thirty-eight privately owned dogs: 28 with MMVD and 10 healthy controls. MATERIALS AND METHODS: Prospective clinical study with comprehensive evaluation used to group dogs as healthy or into three stages of MMVD based on current guidelines...
January 19, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28078076/sex-dependent-alteration-of-cardiac-cytochrome-p450-gene-expression-by-doxorubicin-in-c57bl-6-mice
#15
Marianne K O Grant, Davis M Seelig, Leslie C Sharkey, Beshay N Zordoky
BACKGROUND: There is inconclusive evidence about the role of sex as a risk factor for doxorubicin (DOX)-induced cardiotoxicity. Recent experimental studies have shown that adult female rats are protected against DOX-induced cardiotoxicity. However, the mechanisms of this sexual dimorphism are not fully elucidated. We have previously demonstrated that DOX alters the expression of several cytochrome P450 (CYP) enzymes in the hearts of male rats. Nevertheless, the sex-dependent effect of DOX on the expression of CYP enzymes is still not known...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28063919/proteomic-analysis-of-the-protective-effects-of-aqueous-bark-extract-of-terminalia-arjuna-roxb-on-isoproterenol-induced-cardiac-hypertrophy-in-rats
#16
Santosh Kumar, Md Jahangir Alam, Pankaj Prabhakar, Sayeed Ahmad, Subir K Maulik, Manish Sharma, Shyamal K Goswami
ETHNOPHARMACOLOGICAL RELEVANCE: Aqueous bark extract of Terminalia arjuna (TA) has been in use as an ethnomedicine for cardiovascular ailments in the Indian subcontinent for centuries. Studies using hemodynamic, ROS scavenging and anti-inflammatory parameters in animal models have shown its anti-atherogenic, hypotensive, inotropic, anti-inflammatory effects. However, details analysis on its effects on established molecular and cell biological markers are a prerequisite for its wider acceptance to the medical community...
January 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28062619/beyond-natriuretic-peptides-for-diagnosis-and-management-of-heart-failure
#17
REVIEW
Nasrien E Ibrahim, James L Januzzi
BACKGROUND: Heart failure (HF) is a complex syndrome with an enormous societal burden in terms of cost and morbidity and mortality. Natriuretic peptide (NP) testing is now widely used to support diagnosis, prognostication, and management of patients with HF, but NPs come with limitations, including vulnerability to the presence of obesity, atrial fibrillation, and renal dysfunction, for example. Beyond the NPs, novel biomarkers may supplement traditional clinical and laboratory testing to improve understanding of the complex disease process of HF, and possibly to personalize care for those affected through better individual phenotyping...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062615/biochemistry-therapeutics-and-biomarker-implications-of-neprilysin-in-cardiorenal-disease
#18
REVIEW
Yang Chen, John C Burnett
BACKGROUND: Neprilysin (NEP) is a membrane-bound neutral endopeptidase that degrades a variety of bioactive peptides. The substrates include natriuretic peptides (NPs), which are important regulating mediators for cardiovascular and renal biology. Inhibition of NEP activity and exogenous NP administration thus have emerged as potential therapeutic strategies for treating cardiorenal diseases. More recently, B-type natriuretic peptide (BNP) or N-terminal-proBNP (NT-proBNP), 3'-5' cyclic guanosine monophosphate (cGMP), and soluble NEP as biomarkers have also been investigated in heart failure (HF) trials and their predictive value are beginning to be recognized...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062611/natriuretic-peptides-and-analytical-barriers
#19
REVIEW
Vlad C Vasile, Allan S Jaffe
BACKGROUND: The natriuretic peptide system is an endocrine, autocrine and paracrine system that plays an important role in the maintenance of cardiovascular homeostasis. Biomarkers based on these peptides are important diagnostic and prognostic tools for myocardial function. CONTENT: Although natriuretic peptides were discovered more than 2 decades ago, their intricate and complex biology is associated with important questions not yet elucidated. The diversity of circulating forms of natriuretic peptides, the distinct expression of these forms in particular patients, and the heterogeneity of heart failure forms, along with specific assay-related and preanalytic issues, cause assays to be poorly harmonized...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28062138/determinants-and-prognostic-value-of-b-type-natriuretic-peptide-in-patients-with-aortic-valve-stenosis
#20
Virginia Nguyen, Claire Cimadevilla, Dimitri Arangalage, Monique Dehoux, Isabelle Codogno, Xavier Duval, Sarah Tubiana, Alec Vahanian, David Messika-Zeitoun
BACKGROUND: The prognostic value of N-terminal fragment of pro B-type natriuretic peptide (Nt-proBNP) in aortic stenosis (AS) is still being debated. We sought to evaluate the determinants of Nt-proBNP in AS and its prognostic value in asymptomatic patients. METHODS: Patients with pure isolated at least mild degenerative AS enrolled in our prospective cohort (2006-2013) constituted our population. Clinical and biological measurements as well as echocardiographic evaluations were performed at study entry for all patients...
March 1, 2017: International Journal of Cardiology
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