Publications by authors named "Lingfang Li"

Article Synopsis
  • Alzheimer's disease (AD) is a common neurodegenerative disorder with no cure, making early detection and risk gene identification essential for effective treatment.
  • Our research analyzed three datasets from the hippocampus of 37 AD patients and 66 healthy controls, revealing 25 up-regulated and 291 down-regulated genes, particularly those related to synaptic transmission.
  • Through a Cox model using nine identified genes, we demonstrated their potential for assessing AD risk, offering valuable insights for early detection and future treatment strategies.
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Objective: At different times, public health faces various challenges and the degree of intervention measures varies. The research on the impact and prediction of meteorology factors on influenza is increasing gradually, however, there is currently no evidence on whether its research results are affected by different periods. This study aims to provide limited evidence to reveal this issue.

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Triple-negative breast cancer (TNBC) is a clinically aggressive subtype of breast cancer. Core transcriptional regulatory circuitry (CRC) consists of autoregulated transcription factors (TFs) and their enhancers, which dominate gene expression programs and control cell fate. However, there is limited knowledge of CRC in TNBC.

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Background: This study adopted complete meteorological indicators, including eight items, to explore their impact on hand, foot, and mouth disease (HFMD) in Fuzhou, and predict the incidence of HFMD through the long short-term memory (LSTM) neural network algorithm of artificial intelligence.

Method: A distributed lag nonlinear model (DLNM) was used to analyse the influence of meteorological factors on HFMD in Fuzhou from 2010 to 2021. Then, the numbers of HFMD cases in 2019, 2020 and 2021 were predicted using the LSTM model through multifactor single-step and multistep rolling methods.

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Background: Influenza epidemics pose a threat to human health. It has been reported that meteorological factors (MFs) are associated with influenza. This study aimed to explore the similarities and differences between the influences of more comprehensive MFs on influenza in cities with different economic, geographical and climatic characteristics in Fujian Province.

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Cadmium (Cd) can influence germ cell development, and epigenetic events may be involved. However, there is no study on whether Cd can influence germ cells differentiation into ovarian granulosa cells (GCs), and more insight into the molecular mechanism of the effect of Cd on germ cell development from mouse embryonic stem (ES) cells into ovarian granulosa cells and investigation of appropriate epigenetic factors are of great importance. In this study, mouse ES cell differentiation into GCs was established in an in vitro model.

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Background: Primary hypertension is one of the most well-known risk factors for cardiovascular disease. Currently, there is still no ideal indicator for left ventricular end-diastolic pressure.

Methods: 73 hypertension patients and 37 healthy people were enrolled in this study.

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Article Synopsis
  • The novel coronavirus SARS-CoV-2 has caused over 200,000 deaths, and currently, there are no available vaccines or therapeutic antibodies to combat it.
  • Targeting the receptor-binding domain (RBD) of the virus's spike protein is crucial, as it facilitates the virus's entry into human cells via the ACE2 receptor.
  • A competitive biopanning strategy was used to find antibodies that block the interaction between RBD and ACE2, successfully isolating a potent antibody (rRBD-15) that inhibits SARS-CoV-2 infection, while another antibody (rRBD-16) did not demonstrate blocking capability.*
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Cadmium (Cd) can induce ovarian injury by microRNAs (miRNAs), however, the molecular mechanism of miRNAs after Cd exposure have not known. In this study, 56-day-old adult female Sprague-Dawley (SD) rats were injection with PMSG, after 48 h, ovarian granulosa cells (GCs) were extracted and cultured for 24 h, then treated with 0, 2.5, 5, 10 and 20 μM Cd for 24 h.

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Benefiting from their excellent optical absorption and electron transfer properties, manganese dioxide nanomaterials have been widely applied for fluorescence-based nanosensors. In this work, graphene quantum dots (GQDs) wrapped square-plate-like MnO nanocomposite was synthesized from potassium permanganate via an in situ redox procedure under ultrasonication with poly(allylamine hydrochloride) (PAH) being involved. Through an effective fluorescence resonance energy transfer (FRET) process and inner filter effect (IFE) between GQDs and MnO, the fluorescence of GQDs was quenched.

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Taking consideration of metal-induced fluorescence quenching and excellent coordination effect of D-penicillamine (D-PA), a graphene quantum dots (GQDs)-based fluorescent switch for D-PA detection was designed and established firstly with the help of lead ions. GQDs obtained from citric acids made them rich in carboxyl and hydroxyl groups, giving GQDs the ability to combine with lead ions. As anticipated, the fluorescence intensity was quenched by Pb through electron transfer process.

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A continuum theoretical scheme for self equilibrium, self bending and symmetry lowering of nanofilms was obtained by considering surface elasticity, surface stress and the corresponding surface slice thickness. When surface stress and surface elasticity are both balance, the nanofilm is simply compressed (or expanded). When the surface stress or surface elasticity is imbalance, the nanofilm will bend.

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This study implements temporal and spatial appraisals on the operational performance and corresponding microbial community structure of a full-scale advanced anaerobic expanded granular sludge bed (AnaEG) which was used to treat low organic loading starch processing wastewater. Results showed stable treatment efficiency could be maintained with long-term erratic influent quality, and a major reaction zone located at the bottom of the AnaEG, where the main pollutant removal rate was greater than 90%. Remarkably, high-throughput sequencing of 16S rRNA gene amplicons displayed that the predominant members constructed the major part of the overall microbial community and showed highly temporal stability.

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Objective: To identify circulating microRNAs that are differentially expressed in severe coronary heart disease with well or poorly developed collateral arteries and to investigate their mechanisms of action in vivo and in vitro.

Approach And Results: In our study, we identified a circulating microRNA, miR-15b-5p, with low expression that, nevertheless, characterized patients with sufficient coronary collateral artery function. Moreover, in murine hindlimb ischemia model, in situ hybridization identified that miR-15b-5p was specifically expressed in vascular endothelial cells of adductors in sham group and was remarkably downregulated after femoral artery ligation.

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The study was designed to evaluate the role of Human cytomegalovirus (HCMV) infection on homebox (HOX) gene expression and the effects of overexpression of HOX genes on proliferation and apoptosis of vascular smooth muscle cells (VSMCs). Viral infection was verified by observation of cytopathic effects through inverted microscopy, viral particles by electron microscopy and HCMV IE gene amplification by RT-PCR. cDNA profiling technology was used to screen expression of HOX genes after HCMV infection in VSMCs.

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Background: The present study was designed to observe the infection of human cytomegalovirus (HCMV) to human vascular smooth muscle cells (VSMCs), and the effect of viral infection on lipid metabolism in VSMCs.

Methods: The cytopathic effects were observed by inverted microscopy and viral infection were examined by electron microscopy and RT-PCR. The lipid metabolism related gene profiling of VSMCs after HCMV infection was assayed by cDNA assay and the abnormal expression of genes were validated by quantitative RT-PCR.

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This study was conducted to produce pectin-doxorubicin conjugate(PDC) nanosuspensions by high-pressure homogenization, and investigating the physico-chemical properties, the cumulative release rate in vitro and in vivo, and the anti-tumor activity. The major production parameters such as pressure, cycle numbers and types of stabilizers on the mean particle size and polydispersity index(PI) of PDC nanosuspensions were investigated. The cumulative release rate in phosphate buffer saline(PBS) at pH 5.

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Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is a specific cell-surface receptor for oxidized-low-density lipoprotein (ox-LDL). The impact of high-density lipoprotein (HDL) on endoplasmic reticulum (ER) stress-mediated alteration of the LOX-1 level in hepatocytes remains unclear. We aimed to investigate the impact on LOX-1 expression by tunicamycin (TM)-induced ER stress and to determine the effect of HDL on TM-affected LOX-1 expression in hepatic L02 cells.

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Asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase (NOS), is emerging as a key contributing factor in atherogenesis, a process in turn known to involve macrophage apoptosis. The aim of this study was to determine the effect of ADMA on macrophage apoptosis, with specific reference to the endoplasmic reticulum (ER) stress pathway. Macrophage apoptosis was evaluated by Annexin V- Propidium iodide (PI) and Hoechst 33258 staining assays.

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Objective: To investigate the effect of lectin-like ox-LDL receptor-1 (LOX-1) on oxidized low-density lipoprotein (ox-LDL)-induced apoptosis and the involvement of the endoplasmic reticulum (ER) stress response pathway.

Methods And Results: Human umbilical vein endothelial cells were treated with 50, 100, or 200 μg/ml ox-LDL and cultured for 12, 24, or 48 h for concentration- and time-dependent studies. Cells were transfected with LOX-1 or Nox-4 shRNAs, and target proteins were inhibited with the corresponding antibodies for mechanistic studies.

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Nano-sized nickel oxide (nano-NiO) is a new nanomaterial that has shown great promise in many areas of application. Understanding its environmental fate and effects is critical for minimizing the potential environmental implications of this new material due to incidental and accidental releases in the future. In this study, we observed strong adsorption of tetracycline to nano-NiO and found that the adsorption affinity can be further enhanced by Cu(ii) ions - the observed distribution coefficient (Kd) values are 10(3.

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Previous studies have demonstrated an important interaction between angiotension II type 1 receptor (AT1R) and angiotension II (Ang II) -induced capillary formation from endothelial cells and vascular endothelial growth factor (VEGF). However, the underlying mechanism remains elusive. Recent studies revealed that the unfolded protein response regulates an angiogenic response by the kidney epithelium during ischemic stress.

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The present study was to examine influence of epichlorohydrin (ECH) modification on structure and properties of glycerol-plasticized wheat gliadin films casting from ethanol/water (70/30 v/v) solution. The modified films were characterized using proton nuclear magnetic resonance ((1)H NMR), Fourier transformation infrared (FTIR) spectra, dynamic mechanical analysis (DMA), and scanning electron microscopy (SEM). Water resistance (moisture absorption MA, water vapor permeability WVP, and weight loss in water WLW), tensile mechanical properties (Young's modulus E, tensile strength sigma(b), and elongation at break epsilon(b)), and thermal decomposition behavior were evaluated in relation to ECH content.

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