Lijuan Chen

Henan University, K’ai-feng-shih, Henan Sheng, China

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Publications (80)183.15 Total impact

  • Hailou Li · Bo Shao · Yanyan Li · Lijuan Chen · Junwei Zhao
    Inorganic Chemistry Communications 09/2015; DOI:10.1016/j.inoche.2015.08.023 · 1.78 Impact Factor
  • Hailou Li · Yamin Cheng · Jie Luo · Pengtao Ma · Junwei Zhao · Lijuan Chen
    Synthesis and Reactivity in Inorganic Metal-Organic and Nano-Metal Chemistry 08/2015; DOI:10.1080/15533174.2014.989577 · 0.53 Impact Factor
  • Wen Yang · Hailou Li · Yanyan Li · Lijuan Chen · Junwei Zhao
    Inorganic Chemistry Communications 08/2015; DOI:10.1016/j.inoche.2015.07.025 · 1.78 Impact Factor
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    ABSTRACT: By the rational self-assembly of trivacant Keggin precursor [B-α-SbW9O33]9- with Fe3+ and Ce3+ cations in the conventional aqueous solution, a novel FeIII-CeIII heterometallic sandwich-type tungstoantimonate [Ce(H2O)8][Ce(H2O)6] [Fe4(H2O)10(B-β-SbW9O33)2]·16H2O (1) has been successfully synthesized and further structurally characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. Structural analysis indicates that the 2-D infinite sheet of 1 consists of the Krebs' sandwich-type [Fe4(H2O)10(B-β-SbW9O33)2]6- subunits and Ce3 + linkers. 1 represents the rare purely inorganic FeIII-CeIII heterometallic tungstoantimonate derivative with the 2-D infinite sheet. The electrochemical and electrocatalytic properties of 1 have been systemically studied in 0.5 mol·L-1 Na2SO4 + H2SO4 supporting electrolyte, moreover, 1 exhibits the obvious electrocatalytic activity towards the reduction of BrO3- and NO2-.
    Inorganic Chemistry Communications 08/2015; 60. DOI:10.1016/j.inoche.2015.07.021 · 1.78 Impact Factor
  • Hailou Li · Wen Yang · Yun Chai · Lijuan Chen · Junwei Zhao
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    ABSTRACT: Single crystals of Na13H7 [Ce(SeW17O59)2]·31H2O are prepared by reaction of Na2WO4 and Na2SeO3 with (NH4)2Ce(NO3)6 in an aqueous KCl-containing solution at pH 2 (stirring, 30 min; 17% yield).
    ChemInform 07/2015; 46(28). DOI:10.1002/chin.201528017
  • Junwei Zhao · Lijuan Chen · Fang Zhang · Xing Ma · Jie Luo
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    ABSTRACT: Two classes of novel tetra-iron substituted sandwich-type arsenotungastates (ATs) with supporting lanthanide (Ln) pendants KNa2 [Ln(H2O)7][Fe4(H2O)10(B-β-AsW9O33)2]•21H2O [Ln = LaIII (1), PrIII (2), NdIII (3), SmIII (4)] and [Ln(H2O)8]2[Fe4(H2O)8(L-thr)2(B-β-AsW9O33)2]•20H2O [Ln = LaIII (5), PrIII (6), NdIII (7), SmIII (8), EuIII (9), GdIII (10), TbIII (11), DyIII (12), ErIII (13)] (L-thr = L-threonine) have been synthesized by the hydrothermal reaction of the [As2W19O67(H2O)]14– precursor with Fe3+ cations and Ln3+ cations in the presence of L-thr or L-leucine and L-alanine and further characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. Structural analyses indicate that 1–4 display the inorganic 2-D sheet architecture constructed from tetra-iron sandwiched AT [Fe4(H2O)10(B-β-AsW9O33)2]6– fragments by bridging [Ln(H2O)7]3+ cations whereas the molecular structures of the isostructural 5–13 consist of an organic–inorganic hybrid tetra-iron substituted sandwich-type AT [Fe4(H2O)8(L-thr)2(B-β-AsW9O33)2]6– fragment and two pendant [Ln(H2O)8]3+ cations. As far as we know, 1–4 represent the rare inorganic 2-D extended ATs based on transition-metal substituted sandwich-type polyoxometalate units and Ln linkers and 5–13 are the first Fe–Ln heterometallic ATs with aminoacid ligands. The solid state photoluminescence (PL) measurements of 9 and 11 have been performed at room temperature. The PL emission of 9 is mainly derived from the characteristic 5D0→7F2 (J = 4–0) transitions of the EuIII cations whereas the PL behavior of 11 stems from the common contribution of the 5D4→7FJ (J = 5–3) transitions of TbIII ions and oxygen-to-metal (O→W) charge-transfer transitions of AT segments. The thermogravimetric (TG) analyses of 1–4 and 6–12 have been investigated.
    Dalton Transactions 05/2015; 44(28). DOI:10.1039/C5DT00696A · 4.20 Impact Factor
  • Junwei Zhao · Lijuan Chen · Xing-Hua Li · Jing Cao · Xing Ma · Jie Luo
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    ABSTRACT: The rational self-assembly of trilacunary Keggin precursor with Fe3+ and RE3+ (rare-earth) ions via a conventional aqueous solution method has led to a series of novel tungstoantimonate-based Fe–RE heterometallic derivatives [Pr(H2O)8][Pr(H2O)6][Fe4(H2O)10(B-β-SbW9O33)2]•16 H2O (1) and [RE(H2O)7]2[Fe4(H2O)10(B-β-SbW9O33)2]•22H2O [RE = TbIII (2), DyIII (3), LuIII (4), YIII (5)], which have been further structurally characterized by elemental analyses, IR spectra, powder X-ray diffraction (PXRD), single-crystal X-ray diffraction and thermogravimetric (TG) analyses. To the best of our knowledge, 1–5 represent the first purely inorganic Fe–RE heterometallic tungstoantimonates based on trilacunary Keggin [B-β-SbW9O33]9– unit. In 1, the tetra-FeIII substituted sandwich-type unit [Fe4(H2O)10(B-β-SbW9O33)2]6– is built up of two trilacunary Keggin subunits [B-β-SbW9O33]9– sandwiching a rhomb-like {FeIII4} cluster, and then the disordered PrIII cations work as bridges to link adjacent sandwich-type units [Fe4(H2O)10(B-β-SbW9O33)2]6–, giving rise to the first 2-D extended sheet based on tungstoantimonate fragments and Fe–RE heterometallic cations. 2–5 are isomorphic and exhibit the discrete structure composed of a tetra-FeIII substituted sandwich-type unit [Fe4(H2O)10(B-β-SbW9O33)2]6– and two supporting [RE(H2O)8]3+ cations. The electrochemical and electrocatalytic properties of 1 and 2 have been investigated in detail in 0.5 mol•L−1 Na2SO4 + H2SO4 supporting electrolyte and both 1 and 2 illustrate the obvious electrocatalytic activity to the reduction of NO2– and BrO3–.
    CrystEngComm 05/2015; 17(27). DOI:10.1039/C5CE00633C · 4.03 Impact Factor
  • Jie Luo · Pengfei Cheng · Junwei Zhao · Lijuan Chen
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    ABSTRACT: A new organic–inorganic hybrid silicotungstate [Cu2(phen)2Cl(H2O)(OH)]2[α-SiW12O40]·8 H2O (1) (phen = 1,10-phenanthroline) with supporting dinuclear copper complexes has been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction. The molecular unit of 1 consists of two pendant coordination cations [Cu2(phen)2Cl(H2O)(OH)]2+ and one saturated Keggin-type silicotungstate polyoxoanion [α-SiW12O40]4− and eight lattice water molecules. The most intriguing feature is that each bi-copper cation [Cu2(phen)2(μ2-Cl)(H2O)(OH)]2+ is constructed from two [Cu(phen)]2+ cations linked by one μ2-Cl and one hydroxyl bridges. Magnetic measurements indicate that 1 demonstrates the ferromagnetic exchange interactions within CuII centers.
    Synthesis and Reactivity in Inorganic Metal-Organic and Nano-Metal Chemistry 05/2015; 45(5). DOI:10.1080/15533174.2013.841231 · 0.53 Impact Factor
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    ABSTRACT: Induced pluripotent stem cells (iPS) exhibit enhanced survival and proliferation in ischemic tissues. However, the therapeutic application of iPS cells is limited by their tumorigenic potential. We hypothesized that iPS cells can transmit cytoprotective signals to cardiomyocytes via exosomes/microvesicles. Exosomes/microvesicles secreted from mouse cardiac fibroblast (CF)-derived iPS cells (iPS-exo) were purified from conditioned medium and confirmed by electron micrograph, size distribution and zeta potential by particle tracking analyzer and protein expression of the exosome markers CD63 and Tsg101. We observed that exosomes are at low zeta potential, and easily aggregate. Temperature affects zeta potential (-14 to -15mV at 23°C vs -24mV at 37°C). The uptake of iPS-exo protects H9C2 cells against H2O2-induced oxidative stress by inhibiting caspase 3/7 activation (P<0.05, n=6). Importantly, iPS-exo treatment can protect against myocardial ischemia/reperfusion (MIR) injury via intramyocardial injection into mouse ischemic myocardium before reperfusion. Furthermore, iPS-exo deliver cardioprotective miRNAs, including nanog-regulated miR-21 and HIF-1α-regulated miR-210, to H9C2 cardiomyocytes in vitro. Exosomes/microvesicles secreted by iPS cells are very effective at transmitting cytoprotective signals to cardiomyocytes in the setting of MIR. iPS-exo thus represents novel biological nanoparticles that offer the benefits of iPS cell therapy without the risk of tumorigenicity and can potentially serve as an "off-the-shelf" therapy to rescue ischemic cardiomyocytes in conditions such as MIR. Copyright © 2015. Published by Elsevier Ireland Ltd.
    International journal of cardiology 05/2015; 192. DOI:10.1016/j.ijcard.2015.05.020 · 4.04 Impact Factor
  • Hailou Li · Wen Yang · Yun Chai · Lijuan Chen · Junwei Zhao
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    ABSTRACT: A novel cerium(IV)-hybridizing selenotungstate with Dawson-like structure Na13H7[Ce(SeW17O59)2] · 31H2O (1) has been synthesized by reaction of Na2WO4 · 2H2O, Na2SeO3 and (NH4)2Ce(NO3)6 in the aqueous solution and characterized by elemental analysis, IR spectrum, UV spectrum, thermogravimetric analysis (TGA) and single-crystal X-ray diffraction. To the best of our knowledge, 1 stands for 1:2-type Dawson-like selenotungstate constructed from two identical [SeW17O59]12– moieties combined via one Ce4 + ion. The Ce4 + cation displays a distorted square prismatic geometry defined by eight oxygen atoms from two [SeW17O59]12– moieties. In the [Ce(SeW17O59)2]20– polyoxoanion, the {SeO3} trigonal pyramid encapsulated into the [SeW17O59]12– fragment is situated on the side close to the Ce4 + ion. The TGA curve of 1 reveals two steps of weight loss between 25 °C to 700 °C. Furthermore, the electrochemical and the eletrocatalytic properties of 1 have been measured by cyclic voltammetry (CV) in 0.5 M Na2SO4 + H2SO4 aqueous solution.
    Inorganic Chemistry Communications 03/2015; 56. DOI:10.1016/j.inoche.2015.03.012 · 1.78 Impact Factor
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    ABSTRACT: Three new metal-organic complexes Cu[Hbpdc](2) (1), [Ni(bpdc)(H2O)]center dot H2O (2) and [Ni(H(2)bpdc)(H2O)(2)] SO4 (3) (H(2)bpdc=2,2'-bipyridyl-5,5'-dicarboxylic acid) have been hydrothermally prepared and structurally characterized by elemental analyses, IR spectra, powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction. 1 is a 3-D supramolecular architecture formed by hydrogen bonding interactions between carboxyl O atoms and strong face-to-face pi center dot center dot center dot pi stacking interactions between bipyridyl rings of Hbpdc(-) ligands, 2 exhibits an intriguing 2-D sheet constructed from [Ni(bpdc)(H2O)1 units and 3 displays an infinite 1-0 chain built by {[Ni(H(2)bpdc)(H2O)(2)](2+)} fragments through SO42-. Moreover, thermogravimetric (TG) and derivative thermogravimetric (DTG) analyses of 3 have been conducted and the TG curve shows two-stage weight loss between 300 and 950 K and the corresponding apparent activation energies are calculated by Ozawa-Flynn-Wall (OFW) method and Friedman method. The most probable kinetic model function of the dehydration reaction of 3 has been estimated by Coats-Redfern integral method and Achar-Bridly-Sharp differential method.
    Journal of Solid State Chemistry 01/2015; 221:5–13. DOI:10.1016/j.jssc.2014.09.006 · 2.13 Impact Factor
  • Jie Luo · Xing Ma · Lijuan Chen · Junwei Zhao
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    ABSTRACT: A novel organic–inorganic hybrid independent 1-D double-chain silicotungstate [Cu(biim)2][Cu(4,4'-bpy)(biim) (H2O)][α-SiW12O40] · 3H2O (1, biim = 2,2'-biimidazole, 4,4'-bpy = 4,4'-dipyridine) has been successfully synthesized by reaction of Na10[A-α-SiW9O34] · 18H2O, CuCl2 · 2H2O, EuCl3, biim and 4,4'-bpy under 160 °C hydrothermal environment and characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. The most remarkable structural feature of 1 is that two types of independent 1-D chains are paralleling and one is constructed from plenary Keggin [α-SiW12O40]4– units and [Cu(biim)2]2 + linkers while the other is based on [Cu(biim)(H2O)]2 + cations and 4,4'-bpy connectors. The variable-temperature magnetic susceptibility of 1 shows the weak antiferromagnetic exchange interactions within CuII centers. Furthermore, the solid-state electrochemical properties of 1 have been also measured in 0.5 mol · L–1 Na2SO4 + H2SO4 aqueous solution by entrapping it in a carbon paste electrode.
    Inorganic Chemistry Communications 01/2015; 54. DOI:10.1016/j.inoche.2015.01.015 · 1.78 Impact Factor
  • Jie Luo · Hailou Li · Xinxin Chen · Jianru Ma · Lijuan Chen · Junwei Zhao
    ChemInform 01/2015; 46(3). DOI:10.1002/chin.201503017
  • Wenbin Lu · Lijuan Chen · Yu Wang · Yuyu Yao · Cong Fu · Pengfei Zuo · Genshan Ma
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    ABSTRACT: Long-term oral anticoagulant treatment is obligatory in patients with atrial fibrillation (AF, score of CHA2DS2VASc ≥ 2). When these patients undergo percutaneous coronary intervention with a drug-eluting stent (PCI-eS), there is also an indication for aspirin and clopidogrel treatment, according to the ESC Guidelines. However, triple therapy has been known to increase the risk of bleeding complications. Unfortunately, there is little prospective data available to resolve this issue. Therefore, it is imperative that an optimal therapy for AF patients with indications of both anticoagulation and antiplatelet intervention to prevent thrombotic complications without increasing the risk of bleeding is found.
    Contemporary Clinical Trials 12/2014; 40. DOI:10.1016/j.cct.2014.12.002 · 1.94 Impact Factor
  • Lili Ren · Lijuan Chen · Hui Qi · Furong Li · Feili Gong
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    ABSTRACT: Human adipose tissue-derived stem cells (hASCs) are considered an ideal tool for the supply of insulin-producing cells to treat diabetes mellitus, with high differentiation efficiency. Islet neogenesis-associated protein (INGAP) is an initiator of islet neogenesis, and the peptide sequence comprising amino acids 104-118, named INGAP pentadecapeptide (INGAP-PP), has been shown to increase β-cell mass in animals and human pathological states. Here, we report a novel 4-step method to promote hASCs to differentiate into islet-like clusters (ILCs) more efficiently by adding INGAP-PP. The hASCs were isolated, purified and differentiated using a 4-step protocol including trichostatin A, INGAP-PP/scrambled peptide (Scrambled-P), dexamethasone, nicotinamide, glucagon-like peptide-1, transforming growth factor β1 and exendin-4. Results showed that ILCs in the INGAP-PP group were more similar to the fresh islets with regard to both size and morphology and expressed significantly higher levels of both insulin and C-peptide than those in the Scrambled-P group. Moreover, the ILCs from the INGAP-PP group secreted higher levels of insulin and C-peptide than those from the Scrambled-P group in response to both a low (5.6 mM) and high (25 mM) glucose challenge and secreted 6 times more hormones under the high-glucose challenge. Real-time PCR and immunocytochemistry showed that ILCs of the INGAP-PP group expressed human pancreatic endocrine hormones and transcription factors. Transplantation of ILCs into diabetic rats partially reversed diabetes and prolonged their life span. In conclusion, the INGAP-PP protocol can efficiently induce hASCs to differentiate into ILCs in vitro, and thus hASCs could be a promising source of cells for transplantation to treat diabetes mellitus. © 2014 S. Karger AG, Basel.
    Cells Tissues Organs 12/2014; 199(5). DOI:10.1159/000362500 · 2.14 Impact Factor
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    Xuejun Liu · Xing Ma · Jing Zhang · Lijuan Chen · Junwei Zhao
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    ABSTRACT: An organic–inorganic hybrid CuII–ErIII heterometallic arsenotungstate Na3[Cu(en)2(H2O)][Cu(en)2]1.5[H3Er(α-AsW11O39)2]·4H2O (1) (en = ethylenediamine) has been hydrothermally synthesized and structurally characterized by elemental analyses, IR and UV spectra, X-ray photoelectron spectroscopy (XPS), cyclic voltammetry and single-crystal X-ray diffraction. 1 displays an organic–inorganic 2-D sheet structure constructed by sandwich-type [H3Er(α-AsW11O39)2]8− fragments and [Cu(en)2]2+ connectors. From the topological viewpoint, if the [H3Er(α-AsW11O39)2]8− fragments are viewed as 3-connected nodes and [Cu(en)2]2+ connectors are considered as linkers, the 2-D sheet can be simplified into a 2-D (6,3)-network topology.
    Arabian Journal of Chemistry 12/2014; 25. DOI:10.1016/j.arabjc.2014.12.002 · 3.73 Impact Factor
  • Jie Luo · Hailou Li · Xinxin Chen · Jianru Ma · Lijuan Chen · Junwei Zhao
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    ABSTRACT: A 3-D mono-copperII substituted silicotungstate [Cu(dap)2(H2O)]2[Cu(dap)2][SiW11CuO39]2H2O (1) has been hydrothermally synthesized by reaction of Na10[A-SiW9O34]18H2O, CuCl22H2O, LaCl3 and dap (dap = 1,2-diaminopropane) and characterized by elemental analyses, IR spectrum, thermogravimetric (TG) analysis, powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction. To our knowledge, 1 represents the first 3-D four-connected framework with the Schlfli symbol of 64 10 that is built by mono-copperII substituted silicotungstate units in polyoxometalate chemistry. The TG curve of 1 indicates two steps of weight loss between 25 and 750 C. Furthermore, the solid-state electrochemical and electro-catalytic properties of 1 have been measured in 0.5 molL 1 Na2SO4+H2SO4 aqueous solution by entrapping it in a carbon paste electrode. 1 displays evident electro-catalytic activities toward the nitrite and bromated reduction.
    Inorganic Chemistry Communications 12/2014; 50. DOI:10.1016/j.inoche.2014.10.003 · 1.78 Impact Factor
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    ABSTRACT: Stem cell therapy has a potential for regenerating damaged myocardium. However, a key obstacle to cell therapy's success is the loss of engrafted cells due to apoptosis or necrosis in the ischemic myocardium. While many strategies have been developed to improve engrafted cell survival, tools to evaluate cell efficacy within the body are limited. Traditional genetic labeling tools, such as GFP-like fluorescent proteins (eGFP, DsRed, mCherry), have limited penetration depths in vivo due to tissue scattering and absorption. To circumvent these limitations, a near-infrared fluorescent mutant of the DrBphP bacteriophytochrome from Deinococcus radiodurans, IFP1.4, was developed for in vivo imaging, but it has yet to be used for in vivo stem/progenitor cell tracking. In this study, we incorporated IFP1.4 into mouse cardiac progenitor cells (CPCs) by a lentiviral vector. Live IFP1.4-labeled CPCs were imaged by their near-infrared fluorescence (NIRF) using an Odyssey scanner following overnight incubation with biliverdin. A significant linear correlation was observed between the amount of cells and NIRF signal intensity in in vitro studies. Lentiviral mediated IFP1.4 gene labeling is stable, and does not impact the apoptosis and cardiac differentiation of CPC. To assess efficacy of our model for engrafted cells in vivo, IFP1.4-labeled CPCs were intramyocardially injected into infarcted hearts. NIRF signals were collected at 1-day, 7-days, and 14-days post-injection using the Kodak in vivo multispectral imaging system. Strong NIRF signals from engrafted cells were imaged 1 day after injection. At 1 week after injection, 70% of the NIRF signal was lost when compared to the intensity of the day 1 signal. The data collected 2 weeks following transplantation showed an 88% decrease when compared to day 1. Our studies have shown that IFP1.4 gene labeling can be used to track the viability of transplanted cells in vivo.
    PLoS ONE 10/2014; 9(10):e107841. DOI:10.1371/journal.pone.0107841 · 3.23 Impact Factor
  • Junwei Zhao · Yan-Zhou Li · Jie Luo · Lijuan Chen
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    ABSTRACT: As an important ramification of polyoxometalates, germanotungstate (GT) chemistry has gradually developed as a new research focus and a challengeable area and has made a great progress in the past decade due to a wide range of potential applications in various areas such as catalysis, magnetism, photochemistry and materials science. In this review, we mainly focus on three categories the metal functionalized GTs: transition-metal (TM) substituted GTs (TMSGTs), rare-earth (RE) substituted GTs (RESGTs) and GT-based TM–RE heterometallic derivatives (GTTRHDs). We will discuss their synthetic strategies, structural features and some properties involving magnetism, electrochemistry and catalysis. Finally, some perspectives on this field are also provided and some possible directions for future work are outlined.
    RSC Advances 09/2014; 4(92). DOI:10.1039/C4RA08045A · 3.84 Impact Factor
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    ABSTRACT: Acute conjunctivitis is a common disease associated with high morbidity and economic burden. To clarify the etiological characteristics of acute conjunctivitis in Beijing, surveillance of acute conjunctivitis was conducted from July to October during 2007-2012 by collecting eye swabs from patients treated at surveillance hospitals affiliated with a surveillance program of 18 districts Center for Disease Prevention and Control in Beijing. Coxsackievirus A24 variant (CA24v), enterovirus 70 (EV70), human adenovirus (HAdV), herpes simplex virus (HSV), and chlamydia were identified by PCR. Phylogenetic analysis of the VP1 region of CA24v was conducted. Comparisons of proportions and statistical significance were performed using the chi-square test. HAdV was found to be the most prevalent pathogen, followed by CA24v, chlamydia, and HSV. Significant differences in the symptoms of ocular pain, photophobia, and epiphora were identified among the 4 agents. The prevalence of HAdV- and CA24v-mediated conjunctivitis peaked in July or August and September or October, respectively. Nucleotide sequences of the VP1 regions among the isolated CA24v strains shared 92.8%-100% homology. In conclusion, HAdV followed by CA24v, chlamydia, and HSV were the most common causative agents of acute conjunctivitis in Beijing. Comprehensive, continuous surveillance and advanced laboratory techniques are needed for further studies.
    Japanese journal of infectious diseases 09/2014; 67(5):349-55. DOI:10.7883/yoken.67.349 · 1.16 Impact Factor

Publication Stats

605 Citations
183.15 Total Impact Points


  • 2009–2015
    • Henan University
      • Institute of Molecular and Crystal Engineering
      K’ai-feng-shih, Henan Sheng, China
    • Keck Graduate Institute
      Клермонт, California, United States
  • 2014
    • Shenzhen Second People's Hospital
      Shen-ch’üan-shih, Zhejiang Sheng, China
  • 2012–2014
    • University of Cincinnati
      • Department of Internal Medicine
      Cincinnati, Ohio, United States
  • 2010–2014
    • Southeast University (China)
      • Department of Cardiology
      Nan-ching-hsü, Jiangxi Sheng, China
  • 2013
    • Chinese Academy of Sciences
      • Cold and Arid Regions Environmental and Engineering Research Institute
      Peping, Beijing, China