Synthesis of benzo[][1,5]diazocin-6(5)-one derivatives the Cu-catalysed oxidative cyclization of 2-aryl-1-indoles with 1,1-enediamines.

A novel protocol for the synthesis of highly functionalized benzo[][1,5]diazocin-6(5)-one derivatives (BDCOs, 4 and 5) from 2-aryl-1-indoles and 1,1-enediamines was developed a complex cascade of reactions including regioselective free radical oxidation, the 1,2-addition of imine, imine-enamine tautomerization, intramolecular cyclization, and ring expansion. The cascade reaction was enabled by refluxing a mixture of two substrates in the presence of di--butyl peroxide (DTBP) as an oxidant and anhydrous CuI as a catalyst in toluene under argon protection. Consequently, a series of BDCOs (4 and 5) were synthesized with high regioselectivity in good yield.

Effect of profilin-1 on the asymmetric dimethylarginine-induced vascular lesion-associated hypertension.

Previous studies have demonstrated that the levels of asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide (NO) synthesis, are strongly associated with hypertension, diabetes, and cardiovascular diseases. Profilin-1, an actin-binding protein, has been documented to be involved in endothelial injury and in the proliferation of vascular smooth muscle cells resulting from hypertension. However, the role of profilin-1 in ADMA-induced vascular injury in hypertension remains largely unknown.

Meta-analysis Identifies Serum C-Reactive Protein as an Indicator of Atrial Fibrillation Risk After Coronary Artery Bypass Graft.

A meta-analysis-based study was conducted to examine the clinical value of serum C-reactive protein (CRP) levels in predicting postoperative atrial fibrillation (POAF) in patients with coronary artery disease (CAD) who underwent coronary artery bypass graft. Computer-based search of scientific literature databases was performed to identify relevant studies in strict accordance with our inclusion and exclusion criteria. Data extracted from the selected studies were used to perform meta-analysis using the STATA 12.

Protective effect of microRNA-30b on hypoxia/reoxygenation-induced apoptosis in H9C2 cardiomyocytes.

We examined the protective role of microRNA-30b (miR-30b) in ischemia-reperfusion (I/R)-induced injury in rat H9C2 cardiomyocytes. H9C2 cells were subjected to hypoxia-reoxygenation (H/R) treatment to simulate ischemia-reperfusion (I/R) injury. H9C2 cells were divided into: vehicle control (VC) group; scrambled inhibitors (INC) group; scrambled mimics (MNC) group; H/R+VC group; H/R+INC group; H/R+mimics group.

Serum fetuin-A levels in patients with cardiovascular disease: a meta-analysis.

Background: Fetuin-A (FA) suppresses arterial calcification, promotes insulin resistance, and appears to be elevated in patients with cardiovascular diseases (CVD), but the data is still inconsistent. To clarify the correlation between serum FA levels and the presence and severity of CVDs, we performed this meta-analysis.

Method: Potential relevant studies were identified covering the following databases: PubMed, Embase, Web of Science, Cochrane Library, CISCOM, CINAHL, Google Scholar, China BioMedicine (CBM), and China National Knowledge Infrastructure (CNKI) databases.

Effect of Chinese herbal medicine for calming Gan (肝) and suppressing hyperactive yang on arterial elasticity function and circadian rhythm of blood pressure in patients with essential hypertension.

Objective: To observe the effect of Chinese herbal medicine for calming Gan (肝) and suppressing hyperactive yang (平肝潜阳, CGSHY) on arterial elasticity function and the circadian rhythm of blood pressure in patients with essential hypertension (EH).

Methods: Adopting a parallel, randomized design, sixty-four patients with EH of stages I and II were randomly divided into two groups according to a random number table, with 32 in each group. The patients in the treatment group were treated with CGSHY and those in the control group were treated with Enalapril.

[Transthoracic echocardiography in transcatheter closure of atrial septal aneurysm combined with secoundum-type atrial septal defect].

Objective: To explore the value of transthoracic echocardiography (TTE) in transcatheter closure of atrial septal aneurysm (ASA) combined with secoundum-type atrial septal defect (ASD).

Methods: Fourteen patients (3 males and 11 females) who had ASA combined with secoundum-type ASD were diagnosed by TTE or transesophageal echocardiography. The ASA projected to the right atrium in all patients.

SLCO1B1 521T-->C functional genetic polymorphism and lipid-lowering efficacy of multiple-dose pravastatin in Chinese coronary heart disease patients.

Aims: Pravastatin is a 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, which is widely used both in primary and secondary prevention of coronary heart disease (CHD). Pravastatin is not subject to metabolism by cytochrome P450s, but it is actively transported from blood into target tissues (e.g.

Effects of valsartan and indapamide on plasma cytokines in essential hypertension.

Objective: investigate and compare the effect of valsartan and indapamide on inflammatory cytokines in hypertension.

Methods: Forty-one untreated patients with mild to moderate hypertension and 20 age and sex-matched normotensives were enrolled in this study. Hypertensives were treated with indapamide 1.

[Protective effect of losartan on injury induced by ox-LDL in endothelial cells and the relationship with asymmetric dimethylarginine].

Objective: To investigate the protective effect of losartan against on injury induced by ox-LDL in endothelial cells and the relationship with asymmetric dimethylarginine (ADMA).

Methods: Endothelial injury was induced by incubation with ox-LDL 100 mg/L in cultured HUVECs for 24 h, and the levels of ADMA, lactate dehydrogenase (LDH), nitric oxide (NO) and tumor necrosis factor-alpha (TNF-alpha) in the conditioned medium were measured. The activity of dimethylarginine dimethylaminohydrolase (DDAH) of cultured endothelial cells was also determined.

Losartan reduces monocyte chemoattractant protein-1 expression in aortic tissues of 2K1C hypertensive rats.

Background: Previous study has demonstrated an arterial inflammatory response in aortic tissues in several hypertensive models which can not be fully explained by hemodynamic forces. This study sought to investigate the effect of angiotensin II (Ang II)and its subtype-1 receptor blocker Losartan on the chemokine expression of monocyte chemoattractant protein-1(MCP-1) in aortic tissues of acute stage of 2-kidney-1-clip (2K1C) hypertensive rats.

Methods: 2K1C renovascular hypertension was produced in male Wistar-Kyoto(WKY) rats by placing a silver clip with an internal diameter of 0.

[Formation and function of coronary collateral circulation and their influencing factors].

Objective: To clarify the formation and function of coronary collateral circulation (CCC) in coronary artery disease (CAD) patients with severe coronary artery stenosis and their influencing factors.

Methods: Coronary angiography was performed on 266 CAD patients with severe coronary stenosis. CCC formation was evaluated by Rentrop rating on those 266 patients and 401 severe stenosis arteries; while in CCC formed patients, CCC function was evaluated by Werner collateral collection (CC) rating.

Fenofibrate decreases asymmetric dimethylarginine level in cultured endothelial cells by inhibiting NF-kappaB activity.

Previous investigations have demonstrated that endogenous inhibitors of nitric oxide synthase (NOS), such as asymmetric dimethylarginine (ADMA), contribute importantly to endothelial dysfunction, and that fenofibrate has a protective effect on the endothelium in rats treated with low-density lipoprotein (LDL) by reducing ADMA levels. In the present study, we explored further the possible mechanism underlying inhibition of ADMA generation by fenofibrate in cultured human umbilical vein endothelial cells (HUVECs). Endothelial injury was induced in cultured HUVECs by incubation with oxidative LDL (ox-LDL) and the levels of ADMA, lactate dehydrogenase (LDH), NO and tumour necrosis factor-alpha (TNF-alpha) in the conditioned medium were measured.

The endothelin receptor antagonist decreases ischemia/reperfusion-induced tumor necrosis factor production in isolated rat hearts.

Previous studies have shown that endothelin-1 (ET-1) may play a pathophysiological role in myocardial ischemia/reperfusion injury. In the present study, BMS-182874 significantly improved the recovery of cardiac function and reduced the release of CK during reperfusion after ischemia and the content of tumor necrosis factor (TNF-alpha) in myocardial tissues. BMS-182874 also reduced myocardial injury and the increased level of TNF-alpha by exogenous ET-1.

[Expression of monocyte chemoattractant protein-1 in aorta of early hypertensive rats].

Objective: To investigate the expression of monocyte chemoattractant protein-1(MCP-1) of aorta wall in acute phase of hypertension in rats with 2 kidney and 1 clip(2K1C).

Method: The MCP-1 mRNA on aorta wall was detected by in situ hybridization and reverse transcription-polymerase chain reaction(RT-PCR).

Results: No MCP-1 was expressed in normal rat, but it was expressed on the aorta wall of rats in 1 week after 2K1C hypertensive model was formed.