Open Journal of Nursing
Vol.05 No.11(2015), Article ID:61009,5 pages
10.4236/ojn.2015.511103
Correlation of Ceruloplasmin with Biomarkers of Cardiac Remodelling and Myofibrosis in Patients with Acute Decompensated Heart Failure Referred to a Tertiary Nurse Lead Heart Failure Clinic
Filip Málek1,2*, Dagmar Vondráková1,2, Oxana Komendová1, Dana Říhová1, Jana Vránová2, Lenka Sedláčková3, Tá?a Andreasová1, Petr Neužil1
1Department of Cardiology, Na Homolce Hospital, Prague, Czech Republic
2Third School of Medicine, Charles University, Prague, Czech Republic
3Department of Clinical Biochemistry, Haematology and Immunology, Na Homolce Hospital, Prague, Czech Republic
Copyright © 2015 by authors and Scientific Research Publishing Inc.
This work is licensed under the Creative Commons Attribution International License (CC BY).
Received 20 September 2015; accepted 8 November 2015; published 11 November 2015
ABSTRACT
Background: Ceruloplasmin is an acute phase protein with plasma copper binding properties, and is a potent extracellular antioxidative enzyme. Inflammation and oxidative stress might explain the role of ceruloplasmin in the pathophysiology of heart failure. Study objective: The objective is to assess the correlation of ceruloplasmin levels with biomarkers of cardiac remodelling and myofibrosis in patients with acute decompensated heart failure. Patients and methods: Blood samples were taken and serum levels of soluble ST2, galectin-3, NT-proBNP and ceruloplasmin were analysed in 31 consecutive patients with systolic HF referred to tertiary care nurse lead heart failure clinic with acute decompensated CHF requiring i.v. diuretics. The mean patients’ age was 68 years, mean left ventricular ejection fraction (LV EF) was 29%, 66% patients had ischemic aetilogy of CHF and 33% had atrial fibrillation. Results: The mean ceruloplasmin level was 0.243 g/l, mean galectin-3 level was 1.26 ng/ml, mean sST2 level was 38.15 ng/ml, and mean NT-proBNP was 1927 pg/ml. The ceruloplasmin level correlated with NT-proBNP (r = 0.58, p < 0.05) and with sST2 (r = 0.77, p < 0.001), sST2 levels correlated significantly with NT-proBNP (r = 0.66, p < 0.01). The ceruloplasmin level did not correlate with galectin-3 concentration. Conclusion: The ceruloplasmin level correlates with the biomarkers of cardiac remodelling (NT-proBNP, sST2), but not with the biomarker of myofibrosis (galectin-3). This finding supports the hypothesis of inflammatory response in acute decompensated heart failure.
Keywords:
Acute Decompensated Heart Failure, Ceruloplasmin, NT-proBNP, sST2, Galectin-3
1. Introduction
Ceruloplasmin is an acute phase protein with plasma copper binding properties, and is considered to be one of the most potent extracellular antioxidative enzymes. Inflammation and oxidative stress might explain the role of ceruloplasmin in the pathophysiology of heart failure [1] . Historically, several epidemiologic studies showed the association of elevated ceruloplasmin levels with the risk of atherosclerosis, coronary heart disease, myocardial infarction and ischemic heart failure [2] - [5] . The Atherosclerosis Risk in Communities (ARIC) Study reveals the association of elevated ceruloplasmin levels with the risk of incident heart failure (HF), HF mortality and risk of cardiovascular disease (CVD) in healthy individuals [6] . In the patients with established chronic heart failure, ceruloplasmin levels correlated with the severity of heart and weakly with B-natriuretic peptide levels, but predicted all-cause mortality [7] .
ST2 is a member of the interleukin-1 (IL-1) receptor family and consists of a trans-membrane ligand (STL2) and a soluble form (sST2). ST2 is released from cardiomyocytes and fibroblasts after mechanical strain. Soluble ST2 has been identified as a novel biomarker of cardiac stress and remodelling. In patients with acutely decompensated heart failure, the elevated sST2 concentrations predicted the risk of hospitalization and mortality, and this association was independent on natriuretic peptides levels and on other clinical variables [8] [9] .
Galectin-3 is a protein secreted by activated macrophages and has a role in the development of fibrosis in injured tissues. Experimental studies showed increased galectin-3 secretion in the context of cardiac hypertrophy and heart failure models. Clinical studies identified galectin-3 to have additional prognostic information together with NT-proBNP in acute heart failure [10] .
Relation of ceruloplasmin levels with the novel biomarkers of cardiac remodelling (sST2) and myofibrosis (galectin-3) has not been yet evaluated.
2. Study Objective
The aim of our study was to assess correlation of ceruloplasmin levels with biomarkers of cardiac remodelling (NT-proBNP, sST2) and biomarker of myofibrosis (Galectin-3) in patients with acute decompensated heart failure.
3. Patients Population and Methods
Blood samples were taken and serum levels of soluble ST2, galectin-3, NT-proBNP and ceruloplasmin were analysed in 31 consecutive patients, 22 men and eight women, with chronic systolic HF and left ventricular ejection fraction ≤35%, referred to tertiary care nurse lead heart failure clinic with acute decompensated CHF requiring diuretic dose adjustment between 1st January and 30th June 2015. Mean patients’ age was 68 years (range 43 - 84 years), mean left ventricular ejection fraction (LV EF) was 29%, ischemic aetilogy of CHF had 20 (66%) patients and 10 (33%) had chronic atrial fibrillation. Patients were treated according to Guidelines for the diagnosis and treatment of chronic heart failure. Diagnosis of CHF decompensation was based of physical examination showing signs of fluid overload and/or worsening dyspnea. Patients with acute coronary syndrome, pulmonary emboly, acute infection, know malignancy and chronic inflammatory or autoimmune disease were not included in the study.
Blood samples were taken on the day of clinic visit.
Ceruloplasmin determination was performed with the use of immunoturbidimetric assay.
Normal value range is 0.220 - 0.440 g/l in healthy individuals.
The NT-proBNP analysis was performed with a commercially available chemiluminescence immunoassay for the determination of Human NT-proBNP: CLIA kit using Sandwich-CLIA as the method. The sST2 and galectin-3 was analyzed using a commercially available enzyme-linked immunosorbent assay kit. All biochemical analyses were realized on the analyser UnicelDxC 800 (Beckman Coulter Company, Germany) according to established methods.
An echocardiographic examination of the each patient was performed using a broadband transducer with a transmitting frequency from 1.7 to 4.0 MHz on commercially available equipment (Vivid 7, GE, USA). Left ventricular ejection fraction was calculated by Simpson’s method.
All patients’ data were collected and transcribed to statistical testing. Spearman’s correlation coefficient r was used for statistical analysis. A r value > 0.6 and p value < 0.05 was considered significant.
The study was approved by Local Board Ethics Committee and conducted in accordance with the Declaration of Helsinki. All patients provided informed consent orally and in writing prior to enrollment.
4. Results
Results are shown in the table (Table 1). Mean ceruloplasmin level was 0.243 g/l, mean galectin-3 level was 1.26 ng/ml, mean sST2 level was 38.15 ng/ml, and mean NT-proBNP was 1927 pg/ml. As shown in the table, mean ceruloplasmin value in our study was 0.243 g/l and median 0.250 g/l was in range of normal healthy subjects (0.220 - 0.440 g/l).
Mean NT-proBNP level was 1927 pg/ml, and median value was 1103 pg/ml (range 465 - 7856 pg/ml), the values (mean and median) are above upper normal limit for acute heart failure (300 pg/ml).
Correlation of ceruloplasmin with biomarkers of cardiac remodelling and myofibrosis is shown in the table (Table 2). Ceruloplasmin level correlated with NT-proBNP (p < 0.05) and with sST2 (p < 0.001), sST2 levels corrrelated significantly with NT-proBNP (p < 0.01). Ceruloplasmin level did not correlate with galectin-3 concentration.
5. Discussion
Ceruloplasmin is a glycoprotein synthetized in the liver and transports copper. Ceruloplasmin decreases nitric oxide (NO) bioavailibility through NO oxidase activity. Ceruloplasmin also enhances low-density lipoprotein (LDL) oxidation. Oxidized LDL has proatherogenic role and decreased NO availability contributes to endothelial dysfunction [11] [12] . Based on this information, several studies suggested association of elevated ceuroplasmin levels with CVD and HF [13] [14] . Ceruloplasmin is an acute phase protein too and its levels correlate with
Table 1. Results―echocardiography and laboratory parameters.
Table legend: LV EF―left ventricular ejection fraction, EDD-LV―left ventricular end diastolic diameter, LA―left atrial diameter, BMI―body mass index, eGFR―estimated glomerular filtration rate (MDRD formula), Cp―ceruloplasmin, NT-proBNP―N-terminal B-natriuretic peptide, Gal-3―galectin-3.
Table 2. Correlation of ceruloplasmin with other heart failure biomarkers.
Table legend: Cp―ceruloplasmin, NT-proBNP―N-terminal B-natriuretic peptide, Gal-3―galectin-3.
other inflammatory markers associated with CVD, e.g.: high-sensitivity C-reactive protein (hs-CRP) [13] . In the contrary with previous observations, ceruloplasmin levels were weakly associated with CVD in the ARIC study [6] . In the ARIC study, ceruloplasmin levels were associated with incident HF after adjusting for hs-CRP, N-terminal B-natriuretic peptide (NT-proBNP) and high-sensitivity cardiac troponin T. The genetic part of the study brought significant result showing that ceruloplasmin gene on chromosome 3 was not associated with incident HF but the ceruloplasmin level was.
In the patients with established chronic HF, ceruloplasmin levels correlated with CRP levels and showed independent association with the severity of heart failure as assessed by New York Heart Association class in non- ischemic cardiomyopathy [15] .
Association of ceruloplasmin with other heart failure biomarkers was analyzed in several studies. In a study of patients with stable chronic HF, ceruloplasmin levels weakly correlated with B-type natriuretic peptide (r = 0.187, p < 0.001) [7] .
In the patients with acute decompensated heart failure, ceruloplasmin correlated with NT-proBNP levels in a small study evaluated association of heart failure severity with the level of metabolic liver function [16] .
Correlation of ceruloplasmin levels with the novel heart failure biomarkers, e.g.: marker of remodelling sST2 and marker of myofibrosis galectin-3 in the patients with decompensated heart failure has not been systematicaly yet studied.
In our study, ceruloplasmin level correlates with biomarkes of cardiac remodelling:
In our study, ceruloplasmin level in the patients with acute decompensated heart failure with fluid overload correlates with biomarkers of cardiac remodelling: NT-proBNP and sST2. On the other hand, ceruloplasmin levels did not correlate with the biomarker of myofibrosis (galectin-3).
6. Conclusion
Our findings support the inflammatory response and oxidative stress hypothesis in acute decompensated heart failure. It is possible that ceruloplasmin decreases the availability of NO and enhances the reactive oxidant species formation and oxidative cell injury. The cell injury might be associated with the increased wall stress leading to increased myocyte production of biomarkers of remodelling: NT-proBNP and sST2, but not with the increased expression of galectin-3. Galectin-3 is a protein secreted by activated macrophages and has a role in development of fibrosis in injured tissues [17] .
Acknowledgements
Approval for the study was granted by Local Board Ethics Committee Na Homolce Hospital. Study was supported by institutional grant Na Homolce Hospital, Prague, Czech Republic IG 140505.
Cite this paper
FilipMálek,DagmarVondráková,OxanaKomendová,DanaŘíhová,JanaVránová,LenkaSedláčková,TáňaAndreasová,PetrNeužil, (2015) Correlation of Ceruloplasmin with Biomarkers of Cardiac Remodelling and Myofibrosis in Patients with Acute Decompensated Heart Failure Referred to a Tertiary Nurse Lead Heart Failure Clinic. Open Journal of Nursing,05,971-975. doi: 10.4236/ojn.2015.511103
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NOTES
*Corresponding author.