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Michelle Ma Kip, Lotte Mg Steuten, Hendrik Koffijberg, Maarten J IJzerman, Ron Kusters
Early health technology assessment can provide insight in the potential cost-effectiveness of new tests to guide further development decisions. This can increase their potential benefit but often requires evidence which is lacking in early test development stages. Then, expert elicitation may be used to generate evidence on the impact of tests on patient management. This is illustrated in a case study on a new triple biomarker test (copeptin, heart-type fatty acid binding protein, and high-sensitivity troponin [HsTn]) at hospital admission...
October 19, 2016: Journal of Evaluation in Clinical Practice
Margarida Mendes, Julie Dubourg, Anne Blanchard, Damien Bergerot, Pierre-Yves Courand, Valentina Forni, Michael Frank, Guillaume Bobrie, Joel Menard, Michel Azizi
OBJECTIVES: The participation of vasopressin in the mechanisms of resistant hypertension is unclear. We compared plasma copeptin concentration, a surrogate marker for vasopressin secretion, between patients with resistant hypertension and those with controlled blood pressure (CBP), in a post hoc analysis of the Prise en charge de l'Hypertension Artérielle RESistante au traitement trial. METHODS: After 4-week treatment with irbesartan 300 mg/day, hydrochlorothiazide 12...
October 15, 2016: Journal of Hypertension
William Peacock
Dear Editor I read with great interest the manuscript titled "A New Panel of Blood Biomarkers for the Diagnosis of Mild Traumatic Brain Injury/Concussion in Adults" by Shan R, et al, published in the January issue of the Journal. (1) I do have some questions. The key to marker discovery studies is a precise and accurate description of how the population was identified, including controls. I have significant concerns about the control population in the manuscript. In the presentation the characteristics of the control group are unclear, described only as "not patients in the ED" and with the same exclusion criteria of the other cohorts...
October 18, 2016: Journal of Neurotrauma
Gilberto Velho, Ray El Boustany, Guillaume Lefèvre, Kamel Mohammedi, Frédéric Fumeron, Louis Potier, Lise Bankir, Nadine Bouby, Samy Hadjadj, Michel Marre, Ronan Roussel
OBJECTIVE: Plasma copeptin, a surrogate for vasopressin, has been associated with a decline in renal function and albuminuria in population-based studies as well as with progression of diabetic nephropathy in people with type 2 diabetes. We assessed the risk of kidney and coronary events and all-cause mortality associated with plasma copeptin in people with type 1 diabetes. RESEARCH DESIGN AND METHODS: Plasma copeptin was measured in baseline samples of the GENEDIAB (n = 398; 56% male; mean ± SD age 45 ± 12 years and diabetes duration 28 ± 10 years) and GENESIS (n = 588; 52% male; age 42 ± 11 years; diabetes duration 27 ± 9 years) cohorts...
October 11, 2016: Diabetes Care
Filip A Dąbrowski, Patrycja Jarmużek, Agata Gondek, Agnieszka Cudnoch-Jędrzejewska, Dorota Bomba-Opoń, Mirosław Wielgoś
OBJECTIVES: Gestational diabetes mellitus (GDM) is a metabolic disease diagnosed in 1.7% up to 11.6% pregnancies. The prevalence of adverse pregnancy outcome is significantly higher in the case of early onset of diabetes mellitus. Adropin is a hormone promoting carbohydrate oxidation over fat oxidation, and influence nitric oxide synthase. Copeptin is a cleavage product of the vasopressin precursor recently correlated with diabetes mellitus. The aim of the study was to determine maternal serum adropin and copeptin concentrations in women with early and late manifestation of GDM and to discuss their potential role as biochemical markers of insulin resistance...
2016: Ginekologia Polska
Valentina Corradi, Fiorella Gastaldon, Carlotta Caprara, Anna Giuliani, Francesca Martino, Fiorenza Ferrari, Claudio Ronco
INTRODUCTION: Autosomal dominant polycystic kidney disease (ADPKD) is one of the most common genetic diseases with a reported prevalence of 1:400 to 1:1000. Since the intact kidneys can compensate for the loss of glomerular filtration in ADPKD patients, renal insufficiency usually remains undetected until almost the fourth decade of life. Hereafter, reliable diagnostic and prognostic biomarkers to identify ADPKD progression are urgently needed. Several studies and systematic reviews tried to identify markers or predictors of rapid disease progression of ADPKD...
October 4, 2016: Minerva Medica
Osama W Amro, Jessica K Paulus, Farzad Noubary, Ronald D Perrone
BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD) affects millions of people worldwide. Vasopressin promotes disease progression. STUDY DESIGN: A randomized controlled trial with equal (1:1) allocation. SETTING & PARTICIPANTS: This trial examined the effect of combining a low-osmolar (low-sodium [1,500mg/d], low-protein [0.8g per kilogram of body weight]) diet and adjusted water intake on vasopressin secretion in 34 patients with ADPKD...
September 20, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
Pilar Calmarza, Carlos Lapresta, Sandra García-Castañón, Carlos López-Perales, Ainhoa Pérez-Guerrero, Ana Portolés
OBJECTIVES: This study was conducted in order to evaluate the usefulness of copeptin (a stable fragment of the precursor of arginine vasopressin) in the differential diagnosis of acute chest pain of probable coronary origin. MATERIAL AND METHODS: The study includes 82 patients who were initially evaluated according to the protocol of a patient with suspected acute coronary syndrome (ACS) in our Emergency Department, including the determination of troponin and copeptin with specimens taken on admission (time 0) and at 6h...
September 2016: Clínica e Investigación en Arteriosclerosis
Emmanouil Charitakis, Håkan Walfridsson, Urban Alehagen
BACKGROUND: There is limited knowledge on the short-term influence of radiofrequency ablation (RFA) of atrial fibrillation (AF) on 2 cardiac biomarkers; the N-terminal pro-B-type natriuretic peptide (NT-proBNP) and the midregional fragment of the N-terminal of pro-ANP (MR-proANP) and 2 extracardiac biomarkers; the c-terminal provasopressin (copeptin) and the midregional portion of proadrenomedullin (MR-proADM). There are also limited data concerning cardiac production of the latter two...
September 2016: Journal of the American Heart Association
Michal Liber, Moshe Sonnenblick, Gabriel Munter
OBJECTIVE: Elderly patients have a high prevalence of hypernatremia. The aim of this study was to determine demographic and clinical characteristics of the elderly hypernatremic patient hospitalized in the internal medicine ward, and to enhance understanding of the role of ADH secretion in the pathogenesis of hypernatremia. METHODS: Case-control study performed in an Internal Medicine ward in a University affiliated hospital. 33 elderly hypernatremic patients (admission sodium>150 meq/l, age>70) compared to 34 normonatremic patients...
September 15, 2016: Endocrine Practice
Juliane Rothermel, Alexandra Kulle, Paul-Martin Holterhus, Christina Toschke, Nina Lass, Thomas Reinehr
OBJECTIVE: Copeptin has been reported to be associated with stress, obesity and the metabolic syndrome (MetS) in adults. However, data in childhood are scarce. Therefore, we studied the relationships between copeptin, cortisol, puberty and parameters of the MetS in children. DESIGN: Cross-sectional study. PATIENTS: A total of 51 obese children (10·8 ± 3·2 years, 39% male, 45% prepubertal, body mass index standard deviation score (BMI-SDS) 2·77 ± 0·56) and 24 lean children of similar age, gender and pubertal stage...
September 13, 2016: Clinical Endocrinology
Sven Wellmann, Andrea Koslowski, Katharina Spanaus, Roland Zimmermann, Tilo Burkhardt
OBJECTIVE: To test whether an oxytocin challenge test raises neonatal levels of copeptin, the C-terminal portion of proarginine vasopressin, a sensitive stress marker elevated in neonates born by vaginal delivery as opposed to elective cesarean delivery. METHODS: In a randomized controlled trial in women with a singleton pregnancy undergoing elective cesarean delivery at greater than 36 weeks of gestation and no contractions or rupture of membranes, we compared arterial umbilical cord plasma concentrations of copeptin between neonates exposed to an oxytocin challenge test before elective cesarean delivery and those administered saline infusion (placebo group)...
October 2016: Obstetrics and Gynecology
Małgorzata Baumert, Piotr Surmiak, Andrzej Więcek, Zofia Walencka
BACKGROUND: Acute kidney injury (AKI) is the most common complication of perinatal asphyxia. Recent research indicates that serum neutrophil gelatinase-associated lipocalin (NGAL) is an early marker for AKI, but there are the lacks of data about its use in term neonates with perinatal asphyxia. METHODS: A prospective cohort study was conducted on 43 term neonates. Umbilical cord blood and 24 h after birth serum NGAL, copeptin, creatinine, and molality were measured in all asphyxiated and controls neonates...
September 2, 2016: Clinical and Experimental Nephrology
Kris G Vargas, Mona Kassem, Christian Mueller, Johann Wojta, Kurt Huber
Copeptin, a neuropeptide of unknown pathophysiological function that is stoichiometrically secreted with the antidiuretic hormone, is a non-specific marker of endogenous stress which has recently gained interest for its use within a dual-marker strategy in combination with cardiac troponin for the early rule-out of non-ST-elevation myocardial infarction (NSTEMI) in emergency department patients with suspected MI. Based on methodologically strong and consistent evidence from large diagnostic studies and even one randomized intervention study, current European Society of Cardiology Guidelines recommend copeptin and the dual-marker strategy for the early rule-out of MI when high-sensitivity cardiac troponin (hs-cTn) assays are not available...
November 15, 2016: International Journal of Cardiology
Christoph Sinning, Francisco Ojeda, Tanja Zeller, Elvin Zengin, Hans-J Rupprecht, Karl-J Lackner, Christoph Bickel, Stefan Blankenberg, Renate B Schnabel, Dirk Westermann
BACKGROUND: Natriuretic peptides are the standard biomarker for risk stratification in cardiovascular disease. Novel biomarkers of cardiovascular stress might allow refinement in risk stratification for patients with acute coronary syndrome (ACS). We tested the performance of these novel biomarkers for cardiovascular risk stratification in patients who presented with ACS. METHODS: In the AtheroGene study, 873 patients presented with ACS in the emergency department...
May 20, 2016: Canadian Journal of Cardiology
Chi-Bo Wang, Miao Zong, Shi-Qing Lu, Zhuo Tian
BACKGROUND: The activation of the arginine vasopressin system may be involved in the pathology of stroke and diabetes. In this study, we therefore evaluated the short-term prognostic value of early measurement of plasma copeptin levels in Chinese patients with type 2 diabetes mellitus (T2DM) and acute ischemic stroke (AIS). METHODS: From July 2014 to June 2015, all T2DM patients with first-ever AIS were included. Plasma levels of copeptin were tested at admission...
November 2016: Journal of Diabetes and its Complications
Katrina Suzanne Evers, Sven Wellmann
Arginine vasopressin (AVP) plays a major role in the homeostasis of fluid balance, vascular tonus, and the regulation of the endocrine stress response. The measurement of AVP levels is difficult due to its short half-life and laborious method of detection. Copeptin is a more stable peptide derived from the same precursor molecule, is released in an equimolar ratio to AVP, and has a very similar response to osmotic, hemodynamic, and stress-related stimuli. In fact, copeptin has been propagated as surrogate marker to indirectly determine circulating AVP concentrations in various conditions...
2016: Frontiers in Pediatrics
Stanislava Zabarovskaja, Camilla Hage, Anders Gabrielsen, Linda Mellbin, Lars H Lund
BACKGROUND: Heart failure (HF) is associated with pathological activation of arginine vasopressin, measured in plasma by the pre-hormone fragment copeptin. We hypothesised that copeptin is elevated and associated with worse prognosis in HF, and that left ventricular assist device (LVAD) therapy and heart transplantation (HTx) are associated with lower levels of copeptin. METHODS: We measured copeptin in groups of 49 patients with advanced HF, 13 patients one year post-LVAD and 22 patients one year post-HTx and correlated with clinical data and cardiac output...
July 14, 2016: Heart, Lung & Circulation
J Dubourg, M Mendes, A Blanchard, M Frank, L Amar, G Bobrie, P-F Plouin, M Azizi
OBJECTIVE: The lack of consensus regarding the role of vasopressin in uncontrolled hypertension may be due to the use of assays with limited sensitivity. We used plasma copeptin concentration (PCop), a reliable surrogate marker for plasma vasopressin, to evaluate its role in a large population of patients with resistant (RH) and non-resistant (NRH) essential hypertension. DESIGN AND METHOD: 166 patients with RH to > = 3 antihypertensive drugs, including a diuretic (office BP > = 140 or 90 mmHg), entered a 4-week standardized treatment with irbesartan 300 mg + HCTZ 12...
September 2016: Journal of Hypertension
Fu-Xiang Zhu, Heng-Lan Wu, Kai-Sheng Tu, Jian-Xiang Chen, Min Zhang, Chao Shi
PURPOSE: The aim of this study was to investigate copeptin levels in serum, and assess their associations with type 2 diabetes (T2DM) and diabetic complications. METHODS: In this post hoc analysis, serum levels of copeptin were tested in 306 patients with T2DM. Clinical information including diabetic retinopathy (DR) and diabetic nephropathy (DN) were collected. The relation of serum copeptin with DR and DN were investigated with the use of logistic regression models according to equal quartiles of the distributions of serum copeptin...
November 2016: Journal of Diabetes and its Complications
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