Advanced search    

Search: authors:"Fei Zheng"

37 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

3D Cardiac microvessels embolization imaging based on X-ray phase contrast imaging

Background The treatment of microcirculatory impairment will have great impact if it can be applied to myocardial infarction (MI) patients. The problem is how to study these tiny structures and microphenomenon in heart. Methods We investigated the visualization of cardiac microvessels embolization by the mean of X-ray phase contrast imaging (XPCI), which is a recently emerged...

A Novel Strong Tracking Fault Prognosis Algorithm

Improving the ability to track abruptly changing states and resolving the degeneracy are two difficult problems to particle filter applied to fault prognosis. In this paper, a novel strong tracking fault prognosis algorithm is proposed to settle the above problems. In the proposed algorithm, the artificial immunity algorithm is first introduced to resolve the degeneracy problem...

A new long-acting GLP-1 derivative KTP ameliorates hyperglycemia and dyslipidemia and improves pancreas and fatty liver in db/db mice

Glucagon-like peptide-1 (GLP-1) is a polypeptide incretin hormone that glucose-dependently promotes the secretion and synthesis of insulin. However, its half-life is extremely short. To enhance its half-life, we developed a long-acting GLP-1 derivative KTP with controlled release, designed on the basis of another GLP-1 derivative GP62. The kinetics and bioactivity of KTP were...

Adenovirus-mediated stromal cell-derived factor-1 alpha gene transfer improves cardiac structure and function after experimental myocardial infarction through angiogenic and antifibrotic actions

Stromal cell-derived factor 1α (SDF-1) is not only a major chemotactic factor, but also an inducer of angiogenesis. The effects of SDF-1α on the left ventricular remodeling in a rat myocardial infarction (MI) model were analyzed. Myocardial infarction was induced by ligation of the left coronary artery in rats. 0.5 × 1010 pfu/ml AdV-SDF-1 or 0.5 × 1010 pfu/ml Adv-LacZ were...

Analysis of miRNAs and Their Targets during Adventitious Shoot Organogenesis of Acacia crassicarpa

Organogenesis is an important process for plant regeneration by tissue or cell mass differentiation to regenerate a complete plant. MicroRNAs (miRNAs) play an essential role in regulating plant development by mediating target genes at transcriptional and post-transcriptional levels, but the diversity of miRNAs and their potential roles in organogenesis of Acacia crassicarpa have...

Application of a Novel Alkali-Tolerant Thermostable DyP-Type Peroxidase from Saccharomonospora viridis DSM 43017 in Biobleaching of Eucalyptus Kraft Pulp

Saccharomonospora viridis is a thermophilic actinomycete that may have biotechnological applications because of its dye decolorizing activity, though the enzymatic oxidative system responsible for this activity remains elusive. Bioinformatic analysis revealed a DyP-type peroxidase gene in the genome of S. viridis DSM 43017 with sequence similarity to peroxidase from dye...

Body fluid levels of neuroactive amino acids in autism spectrum disorders: a review of the literature

A review of studies on the body fluid levels of neuroactive amino acids, including glutamate, glutamine, taurine, gamma-aminobutyric acid (GABA), glycine, tryptophan, d-serine, and others, in autism spectrum disorders (ASD) is given. The results reported in the literature are generally inconclusive and contradictory, but there has been considerable variation among the previous...

Choroidal thickness in school children: The Gobi Desert Children Eye Study

Purpose To investigate choroidal thickness (CT) and its associations in children in a school-based study. Methods The cross-sectional school-based Gobi Desert Children Eye Study included 1565 out of 1911 (81.9%) eligible children from all schools in the oasis region of Ejina in the Gobi Desert. A detailed ophthalmic examination was performed, including spectral-domain optical...

Dual effects of VEGF-B on activating cardiomyocytes and cardiac stem cells to protect the heart against short- and long-term ischemia–reperfusion injury

Aims To investigate whether vascular endothelial growth factor B (VEGF-B) improves myocardial survival and cardiac stem cell (CSC) function in the ischemia–reperfusion (I/R) heart and promotes CSC mobilization and angiogenesis. Methods and results One hour after myocardial ischemia and infarction, rats were treated with recombinant human VEGF-B protein following 24 h or 7 days of...

Effect of the Random Error on the Radiation Characteristic of the Reflector Antenna Based on Two-Dimensional Fractal

Influence of the random error due to the distortion of the antenna reflector was discussed by using the two-dimensional fractal model. Firstly, a mathematical model of the random error was presented to investigate its impact on the radiation characteristic of the antenna, which was filtered from the two-dimensional fractal by using the wavelet analysis method. Based on the error...

Engineering the Expression and Characterization of Two Novel Laccase Isoenzymes from Coprinus comatus in Pichia pastoris by Fusing an Additional Ten Amino Acids Tag at N-Terminus

The detail understanding of physiological/biochemical characteristics of individual laccase isoenzymes in fungi is necessary for fundamental and application purposes, but our knowledge is still limited for most of fungi due to difficult to express laccases heterologously. In this study, two novel laccase genes, named lac3 and lac4, encoding proteins of 547 and 532-amino acids...

Function of Ca2+-/calmodulin-dependent protein kinase IV in Ca2+-stimulated neuronal signaling and behavior

The activity of Ca2+/calmodulin-dependent protein kinase IV (CaMKIV) is sensitive to activity-dependent changes in the level of intracellular Ca2+. Following neuronal stimulation, the activation of CaMKIV may trigger synaptic modifications and transcriptional responses, both of which are involved in regulating cognitive and emotional behavior. Here, we used CaMKIV knockout (KO...

Functional screening for miRNAs targeting Smad4 identified miR-199a as a negative regulator of TGF-β signalling pathway

The transforming growth factor-β (TGF-β) signalling pathway participates in various biological processes. Dysregulation of Smad4, a central cellular transducer of TGF-β signalling, is implicated in a wide range of human diseases and developmental disorders. However, the mechanisms underlying Smad4 dysregulation are not fully understood. Using a functional screening approach based...

Genetic mapping of QTL for maize leaf width combining RIL and IF2 populations

Conceptualization: Qingchang Meng. Data curation: Ruixiang Liu. Investigation: Fei Zheng. Methodology: Lingjie Kong. Writing ± original draft: Ruixiang Liu. Writing ± review & editing: Jianhua Yuan, Thomas

Improvement of the catalytic efficiency of a hyperthermophilic xylanase from Bispora sp. MEY-1

Zheng, Yuan Wang. Data curation: Xiaoyu Wang, Xiangming Xie, Huiying Luo. Formal analysis: Xiaoyu Wang, Fei Zheng, Tao Tu. Funding acquisition: Bin Yao, Huiying Luo. Methodology: Xiaoyu Wang, Shuai You ... Agriculture Research System (no. CARS-42). We would like to thank LetPub for providing linguistic assistance during the preparation of this manuscript. Author Contributions Conceptualization: Xiaoyu Wang, Fei

In Vitro Anti-Inflammatory Effects of Three Fatty Acids from Royal Jelly

Trans-10-hydroxy-2-decenoic acid (10-H2DA), 10-hydroxydecanoic acid (10-HDAA), and sebacic acid (SEA) are the three major fatty acids in royal jelly (RJ). Previous studies have revealed several pharmacological activities of 10-H2DA and 10-HDAA, although the anti-inflammatory effects and underlying mechanisms by which SEA acts are poorly understood. In the present study, we...

Increased Expression of Chitinase 3-Like 1 in Aorta of Patients with Atherosclerosis and Suppression of Atherosclerosis in Apolipoprotein E-Knockout Mice by Chitinase 3-Like 1 Gene Silencing

Gong,1 Shanshan Xing,2 Fei Zheng,1 and Qichong Xing1 1Department of Cardiology, Qianfoshan Hospital, Shandong University, 16766 Jingshi Road, Jinan 250014, China 2Department of Cardiology, Shandong

Injectable silicone rubber for ocular implantation after evisceration

. Ethical approval form. (PDF) Author Contributions Data curation: Peng Fei Zheng, Hong Yan Deng. Formal analysis: Peng Fei Zheng. Funding acquisition: Qi Sheng You, Xiao Yan Peng. Investigation: Hong ... : Qi Sheng You. Conceptualization: Peng Fei Zheng, Qian Li, Hong Yan Deng, Xiao Yan Peng. Writing ± review & editing: Qi Sheng You, Ian Y. H. Wong, Xiao Yan Peng. 9 / 10 1. Perman KI , Baylis HI

Intracameral Interleukin 1β, 6, 8, 10, 12p, Tumor Necrosis Factor α and Vascular Endothelial Growth Factor and Axial Length in Patients with Cataract

Objective To assess associations between the aqueous humour concentration of interleukin IL-1β, IL-6, IL-8, IL-10 and IL-12p, tumor necrosis factor α (TNF-α) and vascular endothelial growth factor (VEGF) and axial length in eyes with cataract. Methods The hospital-based investigation included patients who underwent cataract surgery between March 2014 and April 2014. Using aqueous...