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Ku X, Chen F, Li P, Wang Y, Yu X, Fan S, Qian P, Wu M, He Q. Identification and genetic characterization of porcine circovirus type 3 in China. Transbound Emerg Dis 2017; 64:703-708. [PMID: 28317326 PMCID: PMC7169768 DOI: 10.1111/tbed.12638] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Indexed: 11/28/2022]
Abstract
A novel circovirus called porcine circovirus type 3 (PCV3) was recently reported to exist in the USA. This circovirus is associated with porcine dermatitis, nephropathy syndrome and reproductive failure. This study reports on the first identification, widely epidemic, different phylogenetic clusters, potential role in sow reproductive failure and possible origins of PCV3 in China.
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Zhu D, Barry MA, Nguyen DM, Qian P, Thiagalingam A, McEwan A. Comparison of internal multi-electrode arrays for electrical impedance tomography. Biomed Phys Eng Express 2017. [DOI: 10.1088/2057-1976/3/1/015007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Qian P, Da Silva K, Kumar S, Kurup R, Nadri F, Samanta R, Bhaskaran A, Ross D, Sivagangabalan G, Cooper M, Davis L, Denniss R, Thiagalingam A, Thomas S, Kovoor P. Early and Long-Term Outcomes After Manual and Remote Magnetic Navigation Guided Ventricular Tachycardia Ablation. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Samanta R, Kumar S, Pouliopoulos J, Narayan A, Qian P, Thomas S, Kovoor P, Thiagalingam A. Normal BMI is a Significant Independent Predictor of Spontaneously Occurring Ventricular Arrhythmias and Mortality in Patients with Myocardial Infarction, Left Ventricular Dysfunction and ICD Implantation. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Qian P, Nayyar D, Chik W, Zaman S, Stafford W, Hayes J, Denman R, Young G, Sanders P, Kovoor P, Sivagangabalan G. The Prognostic Impact of Implanted Cardiac Defibrillator Activation and Mode of Anti-Tachycardia Therapy on Mortality. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Samanta R, Kumar S, Chik W, Bhaskaran A, Farraha M, Qian P, Nadri F, Kizana E, Raisi SA, Thiagalingam A, Kovoor P, Pouliopoulos J. The Use of Unipolar Endocardial Contact Mapping to Detect the Presence of Intramyocardial Adipose Tissue in the Chronic Myocardial Infarction Substrate. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Samanta R, Kumar S, Pouliopoulos J, Narayan A, Nadri F, Qian P, Thomas S, Kovoor P, Thiagalingam A. Normal BMI Is a Significant Independent Predictor of Inducible Ventricular Tachycardia and Mortality in Patients with Myocardial Infarction and Left Ventricular Dysfunction. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Qian P, Barry M, Chik W, Thiagalingam A, Thomas S, Pouliopoulos J. Identification of Regional Subendocardial and Subepicardial Conduction in Ischaemic Scar: Insight from Transmural Plunge Needle Mapping. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Xie YH, Li XP, Xu ZX, Qian P, Li XL, Wang YQ. Effect of compound Maqin decoction on TGF-β1/Smad proteins and IL-10 and IL-17 content in lung tissue of asthmatic rats. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr7539. [PMID: 27706676 DOI: 10.4238/gmr.15037539] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this research, compound Maqin decoction (CMD) has been shown to positively affect in airway inflammation of asthma models. We evaluated the effects of CMD on the expression of transforming growth factor (TGF)-β1/Smad proteins, interleukin (IL)-17, and IL-10 in lung tissue of asthmatic rats. Asthma was induced in a rat model using ovalbumin. After a 4-week treatment with CMD, rats were killed to evaluate the expression of TGF-β1 and Smad proteins in lung tissue. IL-10 and IL-17 levels in lung tissue homogenates were determined by ELISA. The expression of TGF-β1 and Smad3 protein increased, whereas expression of Smad7 protein decreased upon high-dose or low-dose treatment with CMD or by intervention with dexamethasone, compared to the control. There was a significant difference between treatment with a high dose CMD and the control treatment, but no significant difference was found between high-dose CMD treatment and dexamethasone intervention. The expression of TGF-β1 and Smad7 protein increased, whereas the expression of Smad3 protein decreased in the model group compared to other groups. In the CMD high-dose group, low-dose group, and dexamethasone intervention group, the IL-17 concentrations in lung tissue homogenates were decreased, while IL-10 levels were increased. Again, there was a significant difference between CMD high-dose and control treatment, but not between CMD high-dose treatment and dexamethasone intervention. Thus, positive effects of CMD against asthmatic airway remodeling may be due to its regulatory effect on TGF-β1, Smad3, and Smad7 protein levels and on cytokines such as IL-10 and IL-17.
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Qian P, Nadri F, Samanta R, Kurup R, Thiagalingam A, Davis L, Kovoor P, Thomas S. Outcomes and Complication Rate of Ventricular Tachycardia Ablation in a Large Quaternery Metropolitan Australian Hospital. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Duan HY, Liu DM, Qian P, Wang SL, Yan LJ, Wu JT, Yang HT, Fan XW, Chu YJ. Effect of atorvastatin on plasma NT-proBNP and inflammatory cytokine expression in patients with heart failure. GENETICS AND MOLECULAR RESEARCH 2015; 14:15739-48. [PMID: 26634541 DOI: 10.4238/2015.december.1.25] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to explore the effect of atorvastatin intervention on plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) and inflammatory cytokine levels in patients with heart failure (HF). One hundred and twenty-three HF patients were selected from our hospital and randomly divided into control (N = 61) and observation (N = 62) groups; the former received conventional treatment, while the latter were given conventional treatment combined with atorvastatin. Plasma NT-proBNP, inflammatory cytokines [high-sensitive C-reactive protein (hs-CRP), interleukin (IL)-6, IL-10] and cardiac function [left ventricular end-diastolic dimension (LVEDD), left ventricular ejection fraction (LVEF), end-diastolic maximum flow rate ratio (E/A)] were compared among groups. The effective rate of treating HF significantly increased after atorvastatin treatment. The plasma NT-proBNP, IL-6, IL-10, hs-CRP, and LVEDD levels significantly decreased (P < 0.05), while the LVEF and E/A levels significantly increased (P < 0.05) in the observation group compared to the control group and before intervention. The NT-proBNP and cytokine levels significantly differed among patients with different classes of heart function (P < 0.05); the NT-proBNP and cytokine levels increased with the severity of heart function. Pearson's correlation analysis revealed a negative correlation between the NT-proBNP and inflammatory cytokine levels and LVEF and E/A values, and a positive correlation between these factors and LVEDD (P < 0.05). In conclusion, atorvastatin significantly improves cardiac function; the mechanism atorvastatin action was related to the decrease in plasma NT-proBNP and inflammatory cytokine levels.
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Qian P, Orr Y, Davis L. An unusual cause of ST elevation following implantation of a permanent pacemaker. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Qian P, Barry T, Al-Raisi S, Kovoor P, McEwan A, Thiagalingam A, Thomas S. One-shot circumferential renal artery denervation with relative sparing of the arterial wall may be possible using a novel microwave catheter. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nalliah C, Lim T, Qian P, Bhaskaran A, Kurup R, Kizana E, Kovoor P, Ross D, Thomas S. Left atrial surface area remaining not isolated after ablation of persistent atrial fibrillation predicts long-term outcomes. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yang H, Wang S, Yan L, Qian P, Duan H. Association of interleukin gene polymorphisms with the risk of coronary artery disease. GENETICS AND MOLECULAR RESEARCH 2015; 14:12489-96. [DOI: 10.4238/2015.october.16.16] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Nadri F, Thomas S, Thiagalingam A, Qian P. Prospective assessment of initial electrical ring gaps during isolation of pulmonary veins with a single continuous circular ring (Box lesion). Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ma L, Yang Q, Huang Y, Qian P, Wang JG. Pilot Test on the Removal of Coke Powder from Quench Oil Using a Hydrocyclone. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200316] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Qian P, Wu G, Thomas S. Prediction of Atrial Flutter Mechanisms Following Pulmonary Vein Isolation from the Surface Electrocardiogram. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Qian P, Cross A, Naismith R. Pain in Neuromyelitis Optica Is More Common, Disabling, and Refractory Compared to MS (P07.070). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p07.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Qian P, Lancia S, Patnaik R, Xu J, Cross A, Wolansky L, Cook S, Cadavid D, Naismith R. Ring-Enhancing Lesions in MS: Longitudinal Quantification by Diffusion Tensor and Magnetization Transfer Imaging (P03.039). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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An XJ, Bai CX, Xia JB, Dang T, Qian P, Qian GS, Liao W. Immature dendritic cells expressing indoleamine 2,3-dioxygenase suppress ovalbumin-induced allergic airway inflammation in mice. J Investig Allergol Clin Immunol 2011; 21:185-192. [PMID: 21548446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
BACKGROUND Proliferation of activated CD4+ T lymphocytes is inhibited by indoleamine 2,3-dioxygenase (IDO). OBJECTIVE We undertook the present study to test the hypothesis that IDO-expressing immature DCs (imDCs) can restore immune tolerance in mice suffering from allergic airway inflammation. METHODS imDCs were generated from murine bone marrow cells using granulocyte-macrophage colony-stimulating factor.The imDCs were subsequently transfected with an IDO expression vector (pEGFP-N1-IDO). Surface marker expression, including CD11c, MHCII, CD80, and CD86, was analyzed using flow cytometry. IDO-expressing imDCs were injected into the trachea of ovalbumin (OVA)-sensitized mice, and lung histopathology and cytokine expression in bronchoalveolar lavage fluid were assessed. The splenic CD4+ T cells of OVA-sensitized mice were isolated and co-cultured with pEGFP-N1-IDO-expressing imDCs, and apoptosis of CD4+ T cells was detected using the terminal deoxynucleotidyl transferase dUTP nick end labeling assay. RESULTS Expression of IDO in imDCs did not alter cell surface molecule expression. We observed marked lung inflammation, elevated total cell and eosinophil count, and altered cytokine levels in OVA-sensitized mice. These parameters improved upon inoculation with IDO-expressing imDCs. Co-culture with IDO-expressing imDCs also induced apoptosis, inhibited IL-4 and IL-5 expression, and upregulated IFN-gamma expression in CD4+ T cells. CONCLUSIONS IDO-expressing imDCs induced T(H)2 cell apoptosis and reduced T(H)2 cell activation and allergic airway inflammation in OVA-sensitized mice. Thus, upregulation of IDO expression may provide a novel immunointervention strategy for asthma treatment.
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MESH Headings
- Animals
- Apoptosis/physiology
- Asthma/genetics
- Asthma/immunology
- Asthma/metabolism
- Bone Marrow Cells/metabolism
- Bronchial Hyperreactivity/immunology
- Bronchial Hyperreactivity/metabolism
- Bronchial Hyperreactivity/pathology
- Bronchoalveolar Lavage Fluid/immunology
- CD4-Positive T-Lymphocytes/immunology
- Cytokines/biosynthesis
- Cytokines/genetics
- Cytokines/immunology
- Dendritic Cells/enzymology
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Eosinophils/immunology
- Eosinophils/metabolism
- Female
- Flow Cytometry/methods
- Genes, MHC Class II
- Granulocyte-Macrophage Colony-Stimulating Factor/metabolism
- Immune Tolerance/immunology
- Indoleamine-Pyrrole 2,3,-Dioxygenase/biosynthesis
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/immunology
- Indoleamine-Pyrrole 2,3,-Dioxygenase/pharmacology
- Interferon-gamma/genetics
- Interferon-gamma/metabolism
- Male
- Mice
- Mice, Inbred BALB C
- Ovalbumin/immunology
- Ovalbumin/pharmacology
- Th2 Cells/immunology
- Th2 Cells/metabolism
- Up-Regulation
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Li X, Jin M, Yu Z, Zhang A, Chen H, Qian P. Pathogenicity of a goose isolate of highly pathogenic H5N1 influenza A virus for chickens, mice, and pigs. Acta Virol 2008; 52:41-46. [PMID: 18459834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In recent years, a highly pathogenic avian influenza virus (AIV) H5N1 subtype has emerged as a pathogenic agens for a variety of species including humans. To investigate the pathogenicity of AIV, the isolate ZFE/2004 (H5N1) was used to infect chickens, mice, and pigs. The results showed that the isolate showed attributes of the highly pathogenic AIV such as high pathogenicity index (intravenous pathogenicity index (IVPI) of 2.85 and intracerebral pathogenicity index (ICPI) of 3.00) and a specified hemagglutinin (HA) cleavage site. In vivo experiments indicated that this isolate was highly lethal to the Balb/c mice. In addition, it was able to infect pigs, elicit specific antibodies, and cause "flu-like" clinical symptoms. Typical pathological changes were observed in the chickens as well. In vitro experiments showed that the isolate ZFE/2004 was able to induce apoptosis of infected MDCK cells that was detected by the DNA fragmentation analysis and electron microscopy.
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Xu Z, Li X, Liu R, Si Y, Sun M, Jin M, Chen H, Qian P. Inhibition of expression of rna polymerase with small interfering RNAs targeting a conserved motif in the respective viral genes in viruses of the family Flaviviridae. Acta Virol 2007; 51:195-201. [PMID: 18076310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The RNA-dependent RNA polymerase (RdRp) in viruses of the family Flaviviridae plays an important role in the viral replication process and in the forming of a replicase complex. We used small interfering RNAs (siRNAs) corresponding to the highly conservative Motif V of RdRp gene of different viruses to examine their role in modulating the expression of RdRp. Evaluation of the expression of RdRps was performed by the fluorescence, flow cytometry, Western blotting, and real-time PCR. We found that Classical swine fever virus (CSFV) siRNA could completely block the transcription and expression of RdRp. Additionally, Hepatitis C virus (HCV) siRNA could cause effective inhibition of RdRp, whereas Japanese encephalitis virus siRNA did not show significant repression of corresponding RdRp. These results demonstrated that siRNAs inhibited the expression of tested RdRps at the transcription level or at the posttranscriptional processing to a different extent.
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Wen Y, Zhang H, Qian P, Zhou H, Zhao P, Yi B, Yang Y. A study of the Fe(III)/Fe(II)–triethanolamine complex redox couple for redox flow battery application. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2005.10.040] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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