Med Biol Eng Comput
October 2021
A motor imagery EEG (MI-EEG) signal is often selected as the driving signal in an active brain computer interface (BCI) system, and it has been a popular field to recognize MI-EEG images via convolutional neural network (CNN), which poses a potential problem for maintaining the integrity of the time-frequency-space information in MI-EEG images and exploring the feature fusion mechanism in the CNN. However, information is excessively compressed in the present MI-EEG image, and the sequential CNN is unfavorable for the comprehensive utilization of local features. In this paper, a multidimensional MI-EEG imaging method is proposed, which is based on time-frequency analysis and the Clough-Tocher (CT) interpolation algorithm.
View Article and Find Full Text PDFPrevious studies have demonstrated that NADPH oxidase (NOX)/vascular peroxidase (VPO1) pathway - mediated oxidative stress plays an important role in the pathogenesis of multiple cardiovascular diseases. This study aims to evaluate the correlation between NOX/VPO1 pathway and endothelial progenitor cells (EPCs) dysfunctions in hypoxia-induced pulmonary hypertension (PH). The rats were exposed to 10% hypoxia for 3 weeks to establish a PH model, which showed increases in right ventricle systolic pressure, right ventricular and pulmonary vascular remodeling, acceleration in apoptosis and impairment in functions of the peripheral blood derived - EPCs (the reduced abilities in adhesion, migration and tube formation), accompanied by up-regulation of NOX (NOX2 and NOX4) and VPO1.
View Article and Find Full Text PDFRight ventricle (RV) remodeling is a major pathological feature in pulmonary arterial hypertension (PAH). Magnesium lithospermate B (MLB) is a compound isolated from the roots of and it possesses multiple pharmacological activities such as anti-inflammation and antioxidation. This study aims to investigate whether MLB is able to prevent RV remodeling in PAH and the underlying mechanisms.
View Article and Find Full Text PDFMagnesium lithospermate B (MLB) shows multiple biological activities including anti-oxidation and anti-proliferation in various diseases. However, the function of MLB in pulmonary arterial hypertension (PAH) is still unknown. This study aims to investigate the effect of MLB on hypoxia-induced phenotypic transformation of pulmonary arterial smooth muscle cells (PASMCs) and the underlying mechanisms.
View Article and Find Full Text PDFHypericum perforatum [St. John's wort (SJW)] is known to cause a drug interaction with the substrates of cytochrome P450 (P450, CYP) isoforms, mainly CYP3A. This study aims to determine the dose response and time course of the effects of SJW extract on P450s, UDP-glucuronosyltransferase (UGT), glutathione S-transferase (GST), and NAD(P)H-quinone oxidoreductase (NQO) in mice.
View Article and Find Full Text PDFBiochem Biophys Res Commun
January 2017
NADPH oxidases (NOX) - derived reactive oxygen species (ROS) contribute to oxidative injury in hypoxia-induced pulmonary arterial hypertension. This study aims to evaluate the status of NOX in endothelial progenitor cells (EPCs) under hypoxic condition and to determine whether NOX inhibitors could attenuate hypoxia-induced dysfunctions of EPCs. EPCs were isolated from peripheral blood of SD rats and subjected to hypoxia (O/N/CO, 1/94/5) for 24 h.
View Article and Find Full Text PDFChromosome region 10q22.3-q23.3 contains several low copy repeats (LCRs) and is prone to recombination.
View Article and Find Full Text PDFBackground: Anomalous origin of the right pulmonary artery from the ascending aorta (AORPA) is a rare and potential fatal kind of congenital heart disease. This study summarizes the techniques and outcomes of 6 infants with AORPA who underwent the surgical repair.
Methods: Between November 2012 and November 2014, 6 infants with AORPA received surgical repair in the Second Xiangya Hospital and were included in the present study.
PLoS One
December 2014
Background: Ongoing studies using genomic microarrays and next-generation sequencing have demonstrated that the genetic contributions to cardiovascular diseases have been significantly ignored in the past. The aim of this study was to identify rare copy number variants in individuals with congenital pulmonary atresia (PA).
Methods And Results: Based on the hypothesis that rare structural variants encompassing key genes play an important role in heart development in PA patients, we performed high-resolution genome-wide microarrays for copy number variations (CNVs) in 82 PA patient-parent trios and 189 controls with an Illumina SNP array platform.
1p36 deletion (monosomy 1p36) is one of the most common terminal deletions observed in humans, characterized by special facial features, mental retardation, heart defects, development delay and epilepsy. Previously, we reported molecular findings in patients with limb, congenital heart disease (CHD) and other malformations with SNP-array. In a syndromic patient of the same cohort, we detected a small deletion of 1p36.
View Article and Find Full Text PDF13q deletion syndrome is a rare genetic disorder, especially for group 3 deletion (13q33-q34 deletion). Previously we described a patient with congenital heart defect and mental retardation and proposed that a distal 6Mb region might contain the causative gene of congenital heart defect. Here we present a new patient with congenital heart defects (CHD), hand and foot anomalies and mild mental retardation.
View Article and Find Full Text PDFZhonghua Xin Xue Guan Bing Za Zhi
October 2012
Objective: To compare the efficacy between micro invasive occlusion procedure and extracorporeal circulation procedure for treating patients with simple ventricular septal defect.
Methods: Two hundred and twenty patients with simple ventricular septal defect (except subarterial ventricular septal defect) were randomly divided into micro invasive group (n = 116) and traditional cardiopulmonary bypass surgery group (n = 104). Clinical data were collected and compared at baseline and at 3, 30 and 180 days after surgery.
Eur J Med Genet
November 2012
Interstitial duplications of 8q12 encompassing CHD7 have recently been described as a new microduplication syndrome. Three 8q12 duplications have been reported with shared recognizable phenotype: Duane anomaly, developmental delay and dysmorphic facial features. We identified a 2.
View Article and Find Full Text PDFNoonan syndrome (NS) is a clinically variable and genetically heterogeneous disorder with congenital heart defects (CHD), short stature, and craniofacial dysmorphisms. Gain-of-function mutations in RAF1 can cause NS and the highly related NS with multiple lentigines (previously known as LEOPARD syndrome). Here we report on a 15-year-old male with NS phenotype: short stature, heart defects, low posterior hairline, facial malformations, malformed left ear with sensorineural hearing loss, widely spaced nipples, and unilateral upper limb anomaly.
View Article and Find Full Text PDFZhonghua Yi Xue Za Zhi
March 2012
Objective: To evaluate the feasibility of genetic modification of mesenchymal stem cells (MSC) with Sonic Hedgehog (Shh) gene.
Methods: The pcDNA3.1-Shh eukaryotic expression plasmid was constructed and its correctness evaluated by the restriction enzyme analysis and sequencing.
Objective: To study possible influences of 1,25(OH)(2)D(3) on endothelial cell proliferation, apoptosis and endothelial nitric oxide synthase (eNOS) expression of aorta in apolipoprotein E-deficient (apoE(-/-)) mice and to explore the relationship between vitamin D and atherosclerosis.
Method: Endothelial cell of aorta in apoE(-/-) mice were isolated and cultured, and the influence of 1,25(OH)(2)D(3) on endothelial cell proliferation were observed by MTT, apoptosis of cells were quantitated by terminal deoxynucleotidyl transferase mediated dUTP nick end labelling, Bcl-2 mRNA, fas mRNA and eNOS mRNA was detected by reverse transcription-polymerase chain reaction.
Result: Endothelial cell proliferation rate of aorta did not significantly change in the two control groups (0.
Nan Fang Yi Ke Da Xue Xue Bao
December 2009
Objective: To simulate the surgical approaches for intracranial aneurysms using three-dimensional CT angiography (3D-CTA) and assess the value of 3D-CTA in early microneurosurgery for ruptured intracranial aneurysms.
Methods: Forty-eight patients with spontaneous subarachnoid hemorrhage due to ruptured intracranial aneurysm were confirmed by early operation. All the patients were classified according to Hunt-Hess, including 11 of grade I, 29 of grade II, and 8 of grade III.
Objective: To analyze the differential expression proteins of rat ischemia/reperfusion (I/R) lung tissues in vivo and normal lung tissues by comparative proteome analysis, and to study the mechanism of donor lung I/R injury.
Methods: Forty male SD rats were randomly divided into 2 equal groups: I/R group undergoing mimic orthotopic left lung auto-grafting and harvesting of the left lung five hours after the operation, and control group undergoing isolation of the left hilus of lung and then harvesting of the left lung. The differential proteins in the left ventricle of transplanted heart were separated by means of immobilized pH gradient-based two-dimensional gel electrophoresis (2-DE), identified by matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS), and searched through Matrix Science software system.
We successfully treated a case of a 2-year-old male with aortic coarctation coexisting with severe mitral regurgitation via left posteriolateral thoracotomy at one stage. After a mitral valve replacement under perfused ventricular fibrillation with moderate hypothermia, we repaired the aortic coarctation with coarctation resection and end-to-end anastamosis with the aid of deep hypothermic circulatory arrest and selective low-flow cerebral perfusion. The patient had an uneventful hospital course and remains well.
View Article and Find Full Text PDFZhongguo Dang Dai Er Ke Za Zhi
June 2008
Objective: This research reported the experience of early surgical treatment for infants with large atrial septal defects (ASD) or ventricular septal defects (VSD) complicated by pneumonia.
Methods: Between January 2003 and January 2008, 39 infants with large ASD or VSD complicated by pneumonia were admitted to the Second Xiangya Hospital. Thirty-six patients underwent surgical repair within 7-10 days after pneumonia had been controlled.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
March 2008
Objective: To summarize the clinical application of bioprosthetic valve replacement.
Methods: Fifty two patients, aged 13-73(52.4+/-14.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
December 2007
Objective: To explore the early diagnosis of acute respiratory distress syndrome (ARDS) and the mechanical ventilation treatment in operations of cardiopulmonary bypass.
Methods: Thirty-four patients with acute respiratory distress syndrome were divided into the traditional ventilation strategy plus positive end expiratory pressure (PEEP) group (n=13) and the protective ventilation strategy group (n=21), and their diagnosis and treatment were reviewed.
Results: The average ventilator-carrying time in the protective ventilation strategy group and the traditional ventilation strategy plus PEEP group was (4.
Vascular calcification develops within atherosclerotic lesions and results from a process similar to osteogenesis. Taurine is a free beta-amino acid and plays an important physiological role in mammals. We have recently demonstrated that vascular smooth muscle cells (VSMCs) express a functional taurine transporter.
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