Renata Główczyńska

Gene expression profiling in peripheral blood nuclear cells in patients with refractory ischaemic end-stage heart failure

Functional analysis of up- and down-regulated genes might reveal whether peripheral blood cells may be considered as a material of diagnostic or prognostic value in patients with end-stage heart failure (HF). The aim of the present study was to compare the transcriptomic profile of peripheral blood nuclear cells from 6 male patients with ischaemic end-stage HF with those of 6 male patients with asymptomatic cardiac dysfunction. The expression of genes in peripheral blood nuclear cells in both groups of patients was measured using whole-genome oligonucleotide microarrays utilizing 35 035 oligonucleotide probes. Microarray analyses revealed 130 down-regulated genes and 15 up-regulated genes in the patients with end-stage HF. Some of the down-regulated genes belonged to the pathways that other studies have shown to be down-regulated in cardiomyopathy. We also identified up-regulated genes that have been correlated with HF severity (CXCL16) and genes involved in the regulation of expression of platelet activation factor receptor (PTAFR, RBPSUH, MCC, andPSMA7). In conclusion, the identification of genes that are differentially expressed in peripheral blood nuclear cells of patients with HF supports the suggestion that this diagnostic approach may be useful in searching for the molecular predisposition for development of severe refractory HF in patients with post-infarction asymptomatic abnormalities and remodelling of the left ventricle. These results need further investigation and validation.

Prognostic value of B-type natriuretic peptide levels on admission in patients with acute ST elevation myocardial infarction

Objective — To assess the relation between B-type natriuretic peptide (BNP) levels on admission in ST elevation myocardial infarction (STEMI) and short-term, all-cause mortality. Methods and results — Blood samples for BNP determination were obtained on admission in 88 patients (mean age 60.6 ± 10.7 years old) with STEMI. In a 15-minute period, BNP was measured by using simple bedside test for rapid quantification of BNP. Thirty days follow-up was performed. During the period of follow-up 12 (13.6%) patients died. Mean BNP was 228.74 ± 269.98 pg/ml.The lowest value was 5 pg/ml, the highest value 1300 pg/ml due to limitations of the method.The baseline level of BNP was higher among patients who died than among those who were alive at 30 days (mean, 545.6 vs. 178.7 pg/ml; P = 0.001). Mortality increased among patients in increasing quartiles (p = 0.009). The unadjusted odds ratio for 30-day risk of death in the fourth quartile was 5.6 (95 percent confidence interval, 1.6 to 20.5; P < 0.001).When BNP was added to a multivariate Cox regression model including clinical and electrocardiographic variables, BNP levels were independently associated with the prognosis. Conclusions — BNP levels obtained on admission are a powerful, independent indicator of shortterm mortality in patients with STEMI. Rapid tests for BNP assay seem to be a new tool in risk stratification of patients with STEMI.

Evaluation of endothelial function and arterial stiffness in HIV-infected patients: a pilot study.

BACKGROUND In the era of combination antiretroviral therapy (cART), life expectancy of HIV-infected patients is the same as that of the general population, resulting in increasing prevalence of cardiovascular disease in this patient group. AIM To assess the prevalence of endothelial dysfunction in HIV-infected patients and to identify factors which affect endothelial function and arterial stiffness. METHODS Thirty-seven adult HIV-infected patients, regardless of the fact and the type of cART, were enrolled into the study. In patient, reactive hyperaemia peripheral arterial tonometry assessment was performed using the Endo-PAT2000 device (ITAMAR®). This method allows evaluation of endothelial function ant arterial stiffness. RESULTS Final analysis included 37 patients (median age 38 years, range 32-45 years), including 89.2% men. Endothelial dysfunction was found in 13 (35.1%) HIV-infected patients. We found no differences in demographic and clinical characteristics, laboratory data, and cardiovascular drug therapy between patients with or without endothelial dysfunction, except for platelet count which was higher in patients with endothelial dysfunction (174 [119-193] × 10³/mm3 vs. 222 [168-266] × 10³/mm³, p = 0.03). No demographic or clinical variables were identified as predictors of endothelial dysfunction in HIV-infected patients. In addition, no association was found between factors related to HIV infection, chronic drug therapy and the risk of endothelial dysfunction. Statistically significant correlations were found between arterial stiffness and age (rs = 0.53, p < 0.001), red blood cell count (rs = -0.39, p = 0.018), and platelet count (rs = 0.42, p = 0.009). CD4+ and CD8+ lymphocyte count and viral load were similar in patients with or without endothelial dysfunction. Arterial stiffness was significantly higher in patients with higher viral load (rs = -0.39, p = 0.0018) and in those with established AIDS (9.5 [1.0-16.0] vs. -5 [-10-5], p = 0.009). cART had no effect on endothelial dysfunction, while arterial stiffness was higher in patients treated with cART (10 [0-15] vs. -5 [-10-3], p = 0.014). CONCLUSIONS Endothelial dysfunction is common in HIV-infected patients. In general, none of the analysed factors had an effect on endothelial function but cART had a negative effect on arterial stiffness.

The oldest patient with takotsubo cardiomyopathy

Takotsubo cardiomyopathy (TTC) is a rare condition that affects mainly aging women. According to a retrospective review, patients with TTC accounted for approximately 2% of all the patients with suspected acute coronary syndrome (ACS). A few reports indicated that the average age of TTC patients was 68 years, although children or young adults may also be affected. In US and Europe, a number of contemporary TTC studies report that 90% of patients with TTC are women aged 65–70 years. Meta analysis showed that the age ranged from 10 to 89 years. [1] There was also one case study of a 90-year-old patient with TTC ― the oldest patient known so far. In that case, the patient died during the course of treatment from severe multi-organ failure. [2] In the present case report, we present a 98-years old woman with TTC admitted to our clinic. A 98-years old patient was admitted to our clinic because of significant chest pain and general weakness accompanied by hypotension that required catecholamine administration with ST-segment elevation in the anterolateral leads in ECG. The patient suffered from hypertension and third stage of chronic kidney disease. Urgent cardiac catheterization and ventriculography confirmed the absence of any critical coronary disease, but also the presence of a typical apical ballooning and midventricular hypokinesis. Troponin I (TnI) at admission was 5.555 ng/mL and creatine kinase soenzyme MB (CK-MB) mass was 14.5 ng/mL. Inflammatory parameters were not elevated, whereas N-terminal pro brain natriuretic peptide (NT-proBNP) concentration was markedly elevated, at 18,623 pg/mL. NT-proBNP/TnI ratio was 3352.48 on the first day and even higher after 24 h, at 7113.36. This markers profile is characteristic of TTC. There is a relatively small increase in creatine kinase and troponin concentrations in relation to the extent of wall motion abnormalities. BNP is always elevated in patients with TTC and is higher than in patients with ST-segment elevation myocardial infarction. Some researchers suggest that TTC can be distinguished from ACS on the basis of the characteristic profile of cardiac markers consisting of a sudden increase in the concentration of NT-proBNP in the first few days when there is only a small increase in markers of myocardial necrosis (the ratio of NT-pro BNP/troponin). [3]

Comparison of the seven-year predictive value of six risk scores in acute coronary syndrome patients: GRACE, TIMI STEMI, TIMI NSTEMI, SIMPLE, ZWOLLE and BANACH

BACKGROUND AND AIM To compare the long-term predictive value of six risk scores in a seven-year follow-up of acute coronary syndrome (ACS) patients. METHODS We followed 906 patients diagnosed with ACS for seven years prospectively. The following risk scores (RS) were calculated: TIMI STEMI, TIMI NSTEMI, GRACE, SIMPLE, ZWOLLE and BANACH. Based on the survival data, the predictive value for each RS was calculated with receiver operating characteristics (ROC) curve analysis and presented as area under curve (AUC). RESULTS The seven-year survival was 71%. The RS showed diverse long-term predictive values and AUC. The best estimation was demonstrated by the TIMI STEMI (0.779 [95% CI 0.743-0.812]), GRACE RS (0.766 [95% CI 0.737-0.794]) and BANACHRS (0.743 [95% CI 0.713-0.771]). Other scores presented were SIMPLE (0.714 [95% CI 0.683-0.743], TIMI NSTEMI (0.635 [95% CI 0.580-0.688]) and ZWOLLE (0.739 [95% CI 0.697-0.779]. CONCLUSIONS The predictive values of currently recommended RSs are good for long-term perspective (seven years). RSs with high usability, such as BANACH RS, demonstrate accuracy similar to the more advanced RS.

The effect of cycle ergometer exercise training on improvement of exercise capacity in patients after myocardial infarction

BACKGROUND Cardiac rehabilitation in patients after myocardial infarction (MI) is a component of secondary prevention that has an established role in the current guidelines. AIM To determine the effect of physical training on exercise capacity parameters determined on the basis of cardiopulmonary exercise test (CPET) in patients after MI. We also evaluated the relationship between the number of training sessions and exercise capacity. METHODS We prospectively evaluated 52 patients after MI who underwent percutaneous coronary intervention of the infarct-related artery. At the start of the training, patients had no symptoms of heart failure and coronary artery disease. Electrocardiographic exercise test was performed 4 to 6 weeks after MI, followed by CPET in patients with a negative stress test. After determination of the initial exercise capacity, patients underwent 12 training sessions on a cycle ergometer with a workload determined on the basis of anaerobic threshold or heart rate reserve. After 12 training sessions, CPET was performed, followed by another 12 training sessions and a follow-up CPET. RESULTS All patients showed a significant increase in exercise capacity parameters: energy expenditure during CPET increased from 9.39 to 11.79 METs, peak oxygen uptake (VO₂peak) increased from 32.32 to 39.25 mL/kg/min (p < 0.001), and oxygen uptake at the anaerobic threshold increased from 18.34 to 24.65 mL/kg min (p < 0.001). The initial 12 training sessions resulted in a statistically significant increase in VO₂peak from 32.32 to 36.75 mL/kg/min (p = 0.003), while subsequent 12 training sessions were related with an insignificant increase in VO₂peak from 36.75 to 39.25 mL/kg/min (p = 0.065). CONCLUSIONS Regular physical activity improves exercise capacity as measured by CPET. A statistically significant improvement in exercise capacity was seen already after initial 12 training sessions, while another 12 training sessions were associated with smaller benefits.

Toll-like receptor expression and apoptosis morphological patterns in female rat hearts with takotsubo syndrome induced by isoprenaline

Aims: Toll‐like receptors (TLR) and apoptosis were indicated as important factors in heart failure. Our aim was to characterize the morphological pattern of apoptosis, TLR2, TLR4, and TLR6 expression in female rat hearts in the model of takotsubo syndrome (TTS). Main methods: 60 Sprague‐Dawley female rats were treated with a single dose of 150 mg/kg b.wt. of isoprenaline (ISO) or 0.9% NaCl (controls). Hearts were collected 24, 48, 72 h and 7 days post‐ISO injection. 32/60 hearts were used in immunohistopathological studies and 28/60 in real time. Key findings: Apoptosis was observed 24 h post‐ISO in cardiomyocytes, 24, 48, 72 h and 7 days post‐ISO in infiltrating inflammatory cells, 7 days post‐ISO in endothelial cells of vessels. Diffuse TLR4CD68 (CD68, a macrophage marker) and TLR6CD68 positive cells and TLR2, TLR4, TLR6 mononuclear cells were observed in both acute and recovery phase of TTS. In the foci located in the neighborhood of damaged (necrotic/apoptotic) cardiomyocytes in TTS, high (strong) protein expression of TLR2 (TLR2high) was observed: 24, 48, 72 h post‐ISO; TLR4high – 48 and 72 h post‐ISO; TLR6high – 48 h post‐ISO. Whereas in cardiomyocytes of remote myocardium: TLR2high – 72 h post‐ISO; TLR4high – 24 and 72 h post‐ISO; TLR6high – 24 h post‐ISO. TLR2 mRNA was down‐regulated 48 and 72 h post‐ISO whereas TLR4 up‐regulated 7 days post‐ISO. Significance: The expression pattern of apoptosis and TLR differs in the course of TTS in comparison with the control rats. We hypothesize that innate immunity and apoptosis may play a crucial role in TTS pathophysiology.

Ocena kardiologiczna pacjentów z niewydolnością wątroby w ramach kwalifikacji do operacji przeszczepienia wątroby

Liver transplantation is assumed to be a very invasive, extensive and long-lasting surgery, classified, according to the European Society of Cardiology, as a surgery of the highest cardiovascular risk with 5 percent risk of cardiovascular death and myocardial infarction within 30 days after surgery. Liver failure is associated with cardiovascular complications of cirrhosis including cardiac dysfunction and abnormalities in the central, peripheral and splanchnic circulation and some haemodynamic changes. Portal hypertension is accompanied with the hyperkinetic circulation, which results in complications such as cirrhotic cardiomyopathy. Hepatopulmonary syndrome is also a result of liver disease. The aim of the cardiac assessment in this group of patients is an early identification of the specific cardiovascular pathologies. This constitutes an essential element of the qualification process of candidates for transplantation and important information about the increased risk of complications during the perioperative period for an interdisciplinary team.

Study design and rationale for biomedical shirt-based electrocardiography monitoring in relevant clinical situations: ECG-shirt study

BACKGROUND Today, the main challenge for researchers is to develop new technologies which may help to improve the diagnoses of cardiovascular disease (CVD), thereby reducing healthcare costs and improving the quality of life for patients. This study aims to show the utility of biomedical shirt-based electrocardiography (ECG) monitoring of patients with CVD in different clinical situations using the Nuubo® ECG (nECG) system. METHODS An investigator-initiated, multicenter, prospective observational study was carried out in a cardiology (adult and pediatric) and cardiac rehabilitation wards. ECG monitoring was used with the biomedical shirt in the following four independent groups of patients: 1) 30 patients after pulmonary vein isolation (PVI), 2) 30 cardiac resynchronization therapy (CRT) recipients, 3) 120 patients during cardiac rehabilitation after myocardial infarction, and 4) 40 pediatric patients with supraventricular tachycardia (SVT) before electrophysiology study. Approval for all study groups was obtained from the institutional review board. The biomedical shirt captures the electrocardiographic signal via textile electrodes integrated into a garment. The software allows the visualization and analysis of data such as ECG, heart rate, arrhythmia detecting algorithm and relative position of the body is captured by an electronic device. DISCUSSION The major advantages of the nECG system are continuous ECG monitoring during daily activities, high quality of ECG recordings, as well as assurance of a proper adherence due to adequate comfort while wearing the shirt. There are only a few studies that have examined wearable systems, especially in pediatric populations. TRIAL REGISTRATION This study is registered in ClinicalTrials.gov: Identifier NCT03068169. (Cardiol J 2018; 25, 1: 52-59).

Evaluation of Liver Graft Recipient Workup in Predicting of Early Cardiovascular Events During Liver Transplantation: A Single-Center Experience

BACKGROUND Cardiovascular events (CVE) contribute to serious complications and death after liver transplantation (LT). Troponin I (TnI) level >0.07 mg/L and prior cardiac disease are known to be the independent predictors for posttransplant CVE. We evaluated single-center cardiac workup to predict early cardiovascular morbidity and mortality after LT. PATIENTS AND METHODS We recruited 105 consecutive liver transplant recipients (male/female, 59/46; mean age, 51.66 ± 11.67 years). The cardiological assessment at evaluation for LT included medical history, electrocardiogram, echocardiography, Holter monitoring, and exercise test. We collected data regarding CVE including hypotonia with catecholamine usage, arrhythmia, sudden cardiac death, pulmonary edema, and myocardial infarction within 7 days after LT. RESULTS CVE during LT occurred in 42 recipients (40%) and after LT in 9 patients (8.57%). Proposed cutoff level of TnI >0.07 mg/L did not correlate with CVE during operation (P = .73) or after LT (P = .47). CVE during LT was associated with arterial hypertension in medical history (P <.001), right ventricular systolic pressure (P< .05), and clinical scores: Child-Pugh (P = .04), Model for End-Stage Liver Disease (MELD) (P = .04), MELD incorporating serum sodium (P<.03), and integrated MELD score (P = .01). CVE after LT correlated only with arrhythmia (P<.001) and catecholamine usage (P < .05) perioperatively. Of interest, catecholamine usage during LT was associated with prolonged stay at the intensive care unit (P < .05). CONCLUSION The single-center algorithm with noninvasive cardiac procedures without TnI assessment is optimal in evaluation before LT; however, medical history and severity of the liver disease are crucial for short-term cardiovascular morbidity after LT.