Emerging natural and tailored perovskite-type mixed oxides-based catalysts for CO conversions.

The rapid economic and societal development have led to unprecedented energy demand and consumption resulting in the harmful emission of pollutants. Hence, the conversion of greenhouse gases into valuable chemicals and fuels has become an urgent challenge for the scientific community. In recent decades, perovskite-type mixed oxide-based catalysts have attracted significant attention as efficient CO conversion catalysts due to the characteristics of both reversible oxygen storage capacity and stable structure compared to traditional oxide-supported catalysts.

Analysis of gene expression profiling of amyloidogenic immunoglobulin light-chains on cultured rat cardiomyocytes.

The present study aimed to investigate the toxic effects of different amyloidogenic light-chains (LCs) on cardiomyocytes, and demonstrate the differentially expressed genes (DEGs) and signaling pathways that participate in this process. Cultured cardiomyocytes were treated with recombinant κ LC peptide (AL-09) or with serum from a patient diagnosed with multiple myeloma (λ LC) with cardiac involvement. The 6xHis peptide or serum from healthy patients was used as peptide control or serum control, respectively.

Brachial-ankle pulse wave velocity compared with mean arterial pressure and pulse pressure in risk stratification in a Chinese population.

Background: Brachial-ankle pulse wave velocity (baPWV) can be easily measured in an observer-independent way, but lacks robust population-based validation in terms of fatal combined with nonfatal outcomes.

Method: To address this issue, we studied 4251 Chinese randomly recruited Gaoyou County (54.1% women; mean age, 52.

Hypertension related knowledge and behaviour associated with awareness, treatment and control of hypertension in a rural hypertensive population: a community based, cross-sectional survey.

Background And Objective: Hypertension-related knowledge and behaviour have been identified as influential factors associated with awareness, treatment and control of hypertension in urban regions. However, there were few studies on rural areas. This study aims to investigate whether hypertension related knowledge and behaviour were associated with hypertension awareness, treatment and control in Gaoyou, a rural area of Jiangsu province, China.

Quality control of the blood pressure phenotype in the Gaoyou population study.

The Korotkoff approach is the only blood pressure (BP) measurement technique that allows contemporary data to be compared with decades of research. We randomly recruited 4483 people (53.3% women; mean age 52.

[Clinical characteristics of congenital ventricular aneurysm and diverticula in inland China].

Objective: To summarize the clinical characteristics of congenital ventricular aneurysm and diverticula in inland China.

Methods: To identify the literature of congenital aneurysm and diverticula from Wanfang, China National Knowledge Infrastructure (CNKI) and PubMed databases, and to analyze the clinical characteristics of congenital aneurysm and diverticula from January of 2001 to December of 2009.

Results: A total of 116 patients [78 men, 1 - 80 (33.

[Impact of metoprolol use in the treatment of patients with electrical-storm after cardioverter defibrillators implantation].

Objective: To explore the effectiveness of the metoprolol dosage adjustment on reducing the incidence of electrical-storm (ES) in patients with Implantable Cardioverter Defibrillators (ICDs).

Methods: Data from patients with ICD implantation between Jan, 2003 and Jun, 2006 in our hospital were retrospectively analyzed. ES was defined as either ≥ 3 times of ventricular tachyarrhythmias (VTAs) resulting in ICD therapy or VTAs lasting more than 30 s detected by ICD without any therapy within 24 hours.

An algorithm to predict the site of origin of focal atrial tachycardia.

Background: Only a few algorithms for predicting the site of origin of focal atrial tachycardia (AT) have been reported. We aimed to develop a new and more effective algorithm.

Methods: Surface 12-lead electrocardiograms were collected during tachycardia and sinus rhythm in 61 patients who received successful radiofrequency ablation.

Rapid component I(Kr) of cardiac delayed rectifier potassium currents in guinea-pig is inhibited by alpha(1)-adrenoreceptor activation via protein kinase A and protein kinase C-dependent pathways.

Ventricular tachyarrhythmias are often precipitated by physical or emotional stress, indicating a link between increased adrenergic stimulation and cardiac ion channel activity. Human ether-a-go-go related gene (hERG) potassium channels conduct the rapid component of delayed rectifier potassium current, I(kr), a crucial component for action potential repolarization. To evaluate the correlation between increased alpha(1)-adrenergic activity and the rapid component of cardiac I(kr), whole-cell patch-clamp recording was performed in isolated guinea-pig ventricular myocytes.

Premature ventricular contractions originating from the right ventricular outflow tract: three-dimensional distribution of the target sites and their electrocardiographic characteristics.

1. The purpose of the present study was to explore the relationship between electrocardiogram (ECG) patterns of right ventricular outflow tract (RVOT) premature ventricular contractions and the three-dimensional distribution of the target sites. 2.

[Detection of gene mutations of SCN5A in 7 patients with Brugada syndrome].

Objective: Brugada syndrome is linked to sodium channel mutations and could induce arrhythmias that even lead to sudden death. The purpose of this study was to detect if there was gene mutation of SCN5A in 7 patients with Brugada syndrome and explore the molecular genetic characteristics of this disease.

Method: Genomic DNA was extracted from peripheral blood of all 7 patients with Brugada syndrome and 41 pairs of PCR primers were designed to amplify all the 28 exons of SCN5A.

Negative regulation of quinone reductase 2 by resveratrol in cultured vascular smooth muscle cells.

1. Resveratrol, a polyphenol in red wine, has a cardioprotective effect. Resveratrol-targeting protein (RTP) has been purified using a resveratrol affinity column (RAC) and has been identified as quinone reductase type 2 (NQO2).

Swimming training can affect intrinsic calcium current characteristics in rat myocardium.

Endurance exercise is widely assumed to improve cardiac function in humans, but the mechanisms involved in such changes are not clearly understood. The purpose of this study is to determine whether training elicits adaptations at the level of the L-type Ca(2+) channel. Sprague-Dawley rats performed swimming training at either moderate intensity (MOD) or high intensity (HIGH) during 8 weeks.

[Tpeak-Tend interval and risk of cardiac events in patients with Brugada syndrome].

Objective: To evaluate the possible association between Tpeak-Tend (Tp-e) interval in surface standard ECG and cardiac events in patients with Brugada syndrome (BrS).

Method: Tp-e interval in surface standard ECG was compared between BrS patients (n = 23, all males) and paroxysmal supraventricular tachycardia (PSVT) patients (n = 20, all males) as well as between BrS patients with (n = 16) or without (n = 7) cardiac events.

Results: There was significant difference in Tp-e interval between BrS patients and PSVT patients [(109.

[Electrophysiological findings and ablation strategies in patients with atrial tachyarrhythmias after left atrial circumferential ablation in the treatment of atrial fibrillation].

Objective: To report the electrophysiological findings and the ablation strategies in patients with atrial tachyarrhythmias (ATAs) or atrial fibrillation (AF) recurrence after left atrial circumferential ablation (LACA) in the treatment of AF.

Methods: 91 patients with AF had LACA procedure from April 2004 to May 2006, 19 of which accepted the second ablation procedure due to ATAs or AF recurrence. In all the 19 patients [17 male, 2 female, age 25 - 65 (53 +/- 12) years], 11 presented with paroxysmal AF before the first ablation procedure, 2 with persistent AF and 6 with permanent AF.

Hypoxia reoxygenation induces premature senescence in neonatal SD rat cardiomyocytes.

Aim: To investigate whether hypoxia reoxygenation induces premature senescence in neonatal Sprague-Dawley (SD) rat cardiomyocytes.

Methods: Cardiomyocytes were isolated from neonatal SD rat heart and identified by immunohistochemistry. The control cultures were incubated at 37 degree centigrade in a humidified atmosphere of 5% CO(2) and 95% air.

[Time distribution of ventricular arrhythmias in patients with Brugada syndrome].

Objective: To study the characterization of time distribution of ventricular arrhythmias in patients with Brugada syndrome (BrS) using Holter monitoring and ICD follow-up.

Methods: Patients with BrS [all male, mean age (41.07 +/- 11.

[Left atrium linear lesion encircling pulmonary veins guided by EnSite-NavX and double-Lasso technique for paroxysmal atrial fibrillation].

Objective: To evaluate the efficacy of left atrium linear lesion encircling pulmonary veins (PV) guided by EnSite-NavX and double-Lasso technique for paroxysmal atrial fibrillation (PAF).

Methods: Twenty-two patients (male 19, mean age of 48.5 years +/- 11.

[The electrophysiological study and implantable cardioverter defibrillator therapy for the patients with Brugada syndrome].

Objective: Clinical observation of electrophysiological study and implantable cardioverter defibrillator (ICD) therapy in patients with Brugada syndrome.

Methods: Ten patients (all male) with Brugada wave (spontaneous or propafenone test positive in ECG) underwent electrophysiological study (EPS). The mean age was (41 +/- 10) years.