Publications by authors named "Claude Touzery"

Atrial fibrillation (AF) is the most frequent heart rhythm disorder in the general population and contributes not only to a major deterioration in quality of life but also to an increase in cardiovascular morbimortality. The onset of AF in the acute phase of myocardial infarction (MI) is a major event that can jeopardize the prognosis of patients in the short-, medium- and long-term, and is a powerful predictor of a poor prognosis after MI. The suspected mechanism underlying the excess mortality is the drop in coronary flow linked to the acceleration and arrhythmic nature of the left ventricular contractions, which reduce the left ventricular ejection fraction.

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Contrast-induced nephropathy (CIN) after percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI) is frequent and associated with long-term renal impairment and mortality. Early markers of CIN are needed to improve risk stratification. We aimed to assess whether N-terminal fragment of pro B-type natriuretic peptide (Nt-proBNP) could be associated with CIN.

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Background: Atrial fibrillation (AF), whether silent or symptomatic, is a frequent and severe complication of acute myocardial infarction (AMI). Asymmetric dimethylarginine (ADMA), an endogenous eNOS inhibitor, is a risk factor for endothelial dysfunction. We addressed the relationship between ADMA plasma levels and AF occurrence in AMI.

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Introduction: In secondary prevention (SP) of coronary artery disease (CAD), in particular after an acute myocardial infarction (MI), a better knowledge and self-management by the patient may have various supports. The Log book (LB) for CAD patients in Côte d'Or, was created in 2010 by a multidisciplinary team of healthcare professionals of Côte d'Or, from a regional care network. This pilot study evaluated LB as novel support for SP after acute MI.

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Background: Silent atrial fibrillation (AF), assessed by continuous ECG monitoring (CEM), has recently been shown to be common in acute myocardial infarction (AMI), and associated with higher hospital mortality. However, the long-term prognosis is still unknown. We aimed to assess 1-year prognosis in patients experiencing silent AF in AMI.

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Background: Silent atrial fibrillation (AF) has been suggested to be frequent after acute myocardial infarction (MI). Continuous ECG monitoring (CEM) has been shown to improve AF screening in patients at risk of stroke.

Objectives: We aimed to assess the incidence and prognosis of silent AF in patients with acute MI.

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Background: Since atrial fibrillation (AF) may be undiagnosed when asymptomatic and paroxysmal, we aimed to investigate the incidence and determinants of silent AF in patients with acute ischemic stroke or transient ischemic attack (TIA).

Methods: Consecutive patients admitted to the Stroke Unit of the University Hospital of Dijon, France, for acute ischemic stroke or TIA were prospectively enrolled from March to December 2012. Silent AF was assessed by continuous electrocardiography (ECG) monitoring for 24 h after admission.

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Objectives: Low levels of high-density lipoprotein (HDL) cholesterol are associated with an increased risk of acute myocardial infarction possibly through impaired endothelial atheroprotection and decreased nitric oxide (NO) bioavailability. Asymmetric dimethylarginine (ADMA) mediates endothelial function by inhibiting nitric oxide synthase activity. In patients with acute myocardial infarction, we investigated the relationship between serum levels of HDL and ADMA.

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Background: We aimed to assess in-hospital case fatality and 1-year prognosis in HIV-infected patients with acute myocardial infarction.

Methods And Results: From the PMSI (Program de Medicalisation des Systèmes d'informatique) database, data from 277 303 consecutive acute myocardial infarction patients hospitalized from January 1, 2005, to December 31, 2009, were analyzed. Surviving patients were followed up for 1 year after discharge.

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Background: The presence of pre-infarction angina (PIA) has been shown to confer cardioprotection after ST-segment elevation myocardial infarction (STEMI). However, the clinical impact of PIA in non-ST-segment elevation myocardial infarction (NSTEMI) remains to be determined.

Methods And Results: From the obseRvatoire des Infarctus de Côte d'Or (RICO) survey, 1541 consecutive patients admitted in intensive care unit with a first NSTEMI were included.

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Aim: We investigated the relationships between the autonomic nervous system, as assessed by heart rate variability (HRV) and levels of N-terminal Pro-B-type Natriuretic Peptide (Nt-proBNP) in patients with acute myocardial infarction (MI).

Methods And Results: The mean of standard deviation of RR intervals (SDNN), the percentage of RR intervals with >50 ms variation (pNN50), square root of mean squared differences of successive RR intervals (rMSSD), and frequency domain parameters (total power (TP), high frequency and low frequency power ratio (LF/HF)) were assessed by 24 h Holter ECG monitoring. 1018 consecutive patients admitted <24 h for an acute MI were included.

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Objective: The aim of this study was to analyze the impact of diverting off-hour calls to Emergency Medical Dispatch Centers (EMDC) on time delays and revascularization procedures for patients with ST-segment elevation myocardial infarction (STEMI) in a French region.

Methods: A total of 3376 consecutive patients admitted for acute STEMI were included from the RICO survey (a French regional survey for acute myocardial infarction). Patients were retrospectively classified into two groups: before (2001-2004) and after EMDC (2005-2008) implementation and followed up for mortality as primary outcomes.

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Unlabelled: The purpose of this study was to prospectively evaluate the relationship between tumor blood flow and glucose metabolism as evaluated by dynamic first-pass (18)F-FDG PET and by proliferation and endothelial pathologic markers in the setting of newly diagnosed breast cancer.

Methods: Forty patients were prospectively included. Biopsy samples of each tumor were used to assess the Ki67 index of proliferation and immunostaining for CD34 (a panendothelial cell marker) and CD105 (a proliferation-related endothelial cell marker).

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Background And Aim: Periodontal disease, including bone loss, is thought to be involved in coronary artery disease. Multiple complex coronary lesions relate to multifocal destabilization of coronary plaques. We investigated whether bone loss could be associated with the presence of multiple complex coronary lesions.

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Objective: Analysis of the leukocyte transriptome, in particular the Finkel-Biskis-Jinkins Osteosarcoma (c-Fos) gene, which has a prominent role in inflammation, provides new insights into atherosclerosis mechanisms. Although smoking is a major risk factor, the links between smoking status and coronary artery disease (CAD) remains unclear. We aimed to analyze the relationship between smoking status and c-Fos expression in circulating leukocytes of patients with CAD.

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Objectives: We investigated the relationship between prior statin therapy and leukocyte telomere length (LTL), as well as their interaction with potential new biomarkers of oxidative deoxyribonucleic acid (DNA) lesions and reactive oxygen species-induced inflammation.

Methods And Results: From patients admitted for an acute myocardial infarction, LTL was assessed by quantitative polymerase chain reaction (Q-PCR), and leukocyte Finkel-Biskis-Jinkins osteosarcoma (FOS) and 8-oxoguanine DNA glycosylase (OGG1) messenger ribonucleic acid (mRNA) levels were measured by retrotranscription Q-PCR. Patients under prior chronic statin therapy were compared with patients without statin therapy.

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To evaluate the interest in assessing left ventricular diastolic function at baseline for prediction of trastuzumab-mediated cardiotoxicity (TMC) in the setting of adjuvant treatment for breast cancer. The study included 118 women presenting with HER2-positive early-stage invasive breast cancer. Patients received trastuzumab therapy over 1 year, concurrent with six cycles of docetaxel (n = 53), or following anthracycline-based chemotherapy with a cumulative dose of 300 mg/m(2) (n = 45) or 600 mg/m(2) (n = 20) of epirubicine.

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Objectives: To compare 2 cardiac magnetic resonance (CMR) techniques for the evaluation of the prognostic significance of microvascular damage after non ST-segment elevation myocardial infarction (NSTEMI).

Materials And Methods: CMR was performed at 3T in 61 patients within the week following their first NSTEMI. A first-pass saturation-recovery gradient-echo perfusion sequence was started during the infusion of contrast material to evaluate the extent of microvascular obstruction (MO) during the first 2 minutes after injection (MO(<2 min)) and between 3 and 5 minutes thereafter (MO(3 min), MO(4 min), MO(5 min)).

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The aim of this study was to compare the prognostic significance of microvascular obstruction (MO) and persistent microvascular obstruction (PMO) as assessed by cardiac magnetic resonance (CMR) in patients with acute myocardial infarction (AMI). CMR was performed in 184 patients within the week following successfully reperfused first AMI. First-pass images were performed to evaluate extent of MO and late gadolinium-enhanced images to assess PMO and infarct size (IS).

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Aims: to investigate the association between admission hyperglycemia and myocardial damage in patients with ST-segment elevation myocardial infarction (STEMI) using Cardiac Magnetic Resonance (CMR).

Methods: We analyzed 113 patients with STEMI treated with successful primary percutaneous coronary intervention. Admission hyperglycemia was defined as a glucose level >/= 7.

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Background: Randomized studies have shown a reduction in cardiovascular events associated with low doses of statin among hypertensive patients at only moderate cardiovascular risk. The hypothesis of the present study was that statin therapy initiated during hospitalization could improve the long-term outcome after acute myocardial infarction (MI) in hypertensive patients.

Methods: From the French regional obserRvatoire des Infarctus de Côte d'Or (RICO) survey, 1076 patients with a history of hypertension, surviving acute MI were included.

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Purpose: To evaluate, in breast cancer patients treated by neoadjuvant chemotherapy, the predictive value of reduction in FDG uptake with regard to complete pathological response (pCR).

Methods: Forty-seven women with non-metastatic, non-inflammatory, large or locally advanced breast cancer were included. Tumour uptake of FDG was evaluated before and after the first course of neoadjuvant chemotherapy.

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Background: Sudden cardiac death occurring in patients with end-stage renal disease (ESRD) may be related to poor autonomic function with a significant decreased heart-rate variability (HRV). In addition, coronary artery disease has a high prevalence in this population and accounts for 50% of deaths. In the present study, relationships between HRV and myocardial ischemic abnormalities revealed by myocardial scintigraphy (MS) were evaluated in 32 chronic hemodialysis patients.

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Unlabelled: The aim of our study was to evaluate and compare in thyroid cancer patients the predictive value for disease progression of thyroglobulin (Tg) levels measured under thyroid-stimulating hormone (TSH) stimulation, in the postoperative period just before (131)I ablative therapy and at the time of control 6-12 mo later.

Methods: Two-hundred twelve consecutive patients treated for a well-differentiated thyroid carcinoma (184 papillary, 28 follicular) with no initial distant metastases were retrospectively studied. All patients had a total or near-total thyroidectomy followed by ablation with 3.

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