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Zou H, Yang Y, Gao M, Zhang B, Ming B, Sun Y, Chen H, Tang X, Chen Z, Xiong P, Xu Y, Fang M, Tan Z, Gong F, Zheng F. HMGB1 is involved in chronic rejection of cardiac allograft via promoting inflammatory-like mDCs. Am J Transplant 2014; 14:1765-77. [PMID: 24984831 DOI: 10.1111/ajt.12781] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 04/04/2014] [Accepted: 04/06/2014] [Indexed: 01/25/2023]
Abstract
Chronic rejection that leads to diffuse narrowing and occlusion of graft vessels is the most important cause of morbidity and mortality following cardiac transplantation. The role and underlying mechanism of high-mobility group box 1 (HMGB1), as an established inflammatory mediator in acute rejection, remains poorly understood in chronic rejection. Here, we assessed the effects and mechanisms of HMGB1 on the chronic rejection using single MHC Class II-mismatched mouse cardiac transplantation model. It was found that HMGB1 was increased accompanying with the development of chronic rejection, while blockade of HMGB1 with specific neutralizing mAb substantially ameliorated chronic rejection-mediated vasculopathy and fibrosis of allograft, as well as markedly decreased T cell infiltration and production of IL-17A and interferon-gamma in allograft and recipient's spleen. Further, anti-HMGB1 antibody treatment significantly declined the number and frequency of mature dendritic cells (DCs) in allograft and recipient's spleen, especially CD11b(+) Ly6C(high) matured DCs that share the phenotypes with inflammatory-DCs. These findings indicate that HMGB1 contributes to chronic rejection, and HMGB1 blockade may be a novel mean to disrupt the proinflammatory loop after heart transplantation.
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Jiang Y, Yao L, Li F, Tan Z, Zhai Y, Wang L. Characterization of antimicrobial resistance of Vibrio parahaemolyticus
from cultured sea cucumbers (Apostichopus japonicas
). Lett Appl Microbiol 2014; 59:147-54. [DOI: 10.1111/lam.12258] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 11/29/2022]
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Kamran MA, Mufti R, Mubariz N, Syed JH, Bano A, Javed MT, Munis MFH, Tan Z, Chaudhary HJ. The potential of the flora from different regions of Pakistan in phytoremediation: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:801-12. [PMID: 24091528 DOI: 10.1007/s11356-013-2187-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 09/20/2013] [Indexed: 05/08/2023]
Abstract
Soil and water quality is greatly affected by environmental pollution due to the increasing trend of urbanization and industrialization. In many developing countries, including Pakistan, the situation is more alarming as no preventive measures are still taken to tackle the problem. Although in developed countries, many techniques are used to remediate the environment including phytoremediation. It is the most eco-friendly technique in which plants are used to remove pollutants from the environment. Pakistan has also a great diversity of plants which could be used for the remediation of environmental pollutants. To our knowledge, few studies from Pakistan were reported about the use of flora for phytoremediation. According to recent literature, 50 plant species from Pakistan are studied for remediation purposes. In this review, the potential of different plant species for phytoremediation from Pakistan has been discussed along with their comparison to other countries to relate future perspectives.
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Ambusaidi MA, Tan Z, He X, Nanda P, Lu LF, Jamdagni A. Intrusion detection method based on nonlinear correlation measure. INTERNATIONAL JOURNAL OF INTERNET PROTOCOL TECHNOLOGY 2014. [DOI: 10.1504/ijipt.2014.066377] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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105
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He Y, Chen Y, Zhao Q, Tan Z. Roles of brain and muscle ARNT-like 1 and Wnt antagonist Dkk1 during osteogenesis of bone marrow stromal cells. Cell Prolif 2013; 46:644-53. [PMID: 24460718 PMCID: PMC6495916 DOI: 10.1111/cpr.12075] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 08/17/2013] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Many studies have demonstrated that the clock gene, brain and muscle ARNT-like 1 (Bmal1), is directly related to bone ageing by affecting age-related changes to mesenchymal stem cells (MSCs). As a main developmental signal, Wnt may play an important role in this process. Here, we have aimed to elucidate whether Bmal1 positively regulates osteogenesi via Wnt pathways. MATERIALS AND METHODS Bone marrow stromal cells were cultured in basic and in osteo-induction medium with Wnt signalling inhibitor Dkk1 and Bmal1 transfection. Proliferation and osteogenesis of MSCs, expression of Bmal1 and activation of Wnt signalling were investigated by flow cytometry, senescence-associated β-galactosidase (SA-β-gal) staining, real-time quantitative PCR and western blot analysis. RESULTS Expression of Bmal1 (specially after 7 days osteo-induction), activation of Wnt signalling and osteo-related factors fell significantly during osteo-induction after Dkk1 addition. When cellular Bmal1 was increased by transfection, osteogenesis inhibition by Dkk1 was rescued to a certain extent with activation of Wnt signalling. However, Dkk1 did not significantly affect proliferation or senescence of MSCs during early periods of culture. CONCLUSION These findings demonstrated that Bmal1 and Wnt signalling may have a synergistic effect at a particular stage of osteogenesis. Inhibition of Wnt signalling did not greatly affect ageing of MSCs through early passages.
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106
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Tan Z. 'Simple design-efficient calibration estimators for rejective and high-entropy sampling'. Biometrika 2013. [DOI: 10.1093/biomet/ast056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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107
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Zhao Z, Zhang X, Tan Z, Guo J, Zhu H. [Isolation and identification of cultivable myxobacteria in the rhizosphere soils of medicinal plants]. WEI SHENG WU XUE BAO = ACTA MICROBIOLOGICA SINICA 2013; 53:657-668. [PMID: 24195372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE We isolated myxobacteria and explored their diversity from the rhizosphere soils of some medicinal plants. METHODS We used the helper bacteria baiting technique to isolate myxobacteria from the rhizosphere soils collected in South China Botanical Garden and Nanling National Forest Park. The myxobacteria were identified by morphological characteristics and 16S rDNA gene sequences analysis. RESULTS A total of 50 strains were isolated from 22 soil samples, which were identified into 7 genera, Myxococcus (18), Corallococcus (11), Cystobacter (7), Archangium (8), Stigmatella (1), Chondromyces (4) and Pyxidicoccus (1). The dominant genera were Myxococcus and Corallococcus. CONCLUSION Environmental factors were associated with the diversity of myxobactria. Myxobacteria better adapt in high organic matter content and neutral pH environments. The strains of Myxococcus and Corallococcus had a good adaptability for different pH. Meanwhile, the dependence of the strains of Myxococcus and Cystobacter on organic carbon content was not too obvious, and they can also be found in the poor soils. Our findings provided an important scientific base for the development and utilization of myxobacteria resources.
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Tan Z. Simple design-efficient calibration estimators for rejective and high-entropy sampling. Biometrika 2013. [DOI: 10.1093/biomet/ass090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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109
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Liu X, Song P, Tian J, Zhou S, Yan S, Tan Z, Haller H, Rong S. A simple novel technique for heterotopic intestinal transplantation in mice. Transplant Proc 2012; 45:654-8. [PMID: 23267791 DOI: 10.1016/j.transproceed.2012.03.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Accepted: 03/06/2012] [Indexed: 11/16/2022]
Abstract
The murine heterotopic intestinal transplant model is of particular value for addressing the unique immune response in the gut and addressing the underlying immune mechanism during transplantation. Anastomotic stenosis, anastomotic bleeding, and septic shock continue to hamper procedures and plague the success. In this study, we assessed a refined technique designed to improve the success of heterotopic intestinal transplant in mice. Important factors in our refined technique included (1) a refined procedure for graft portal vein preparation, (2) a novel procedure for graft exteriorization, and most importantly (3) a knotless suturing technique designed to allow the surgeon to alter the size of the anastomosis, thus reducing anastomotic bleeding and stenosis rate. Our refined knotless method improved recipient survival to 67.5% when compared to the standard technique (53.8%). In comparison to standard knot suturing technique, which had an anastomotic stenosis rate of 8.3%, the knotless suturing technique significantly reduced the rate of anastomotic stenosis to only 2.4%. Anastomotic bleeding presented in the knotless technique in only 1.2%, whereas it presented in 6.2%, of mice in the standard technique (P < .05). This refined knotless technique offers an easy and effective method for murine heterotopic intestinal transplantation.
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MESH Headings
- Anastomosis, Surgical
- Animals
- Aorta, Abdominal/surgery
- Blood Loss, Surgical/prevention & control
- Female
- Graft Occlusion, Vascular/etiology
- Graft Occlusion, Vascular/prevention & control
- Graft Rejection/etiology
- Graft Rejection/prevention & control
- Jejunum/transplantation
- Male
- Mesenteric Artery, Superior/surgery
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Organ Transplantation/adverse effects
- Organ Transplantation/methods
- Portal Vein/surgery
- Suture Techniques
- Transplantation, Heterotopic
- Vascular Grafting/adverse effects
- Vena Cava, Inferior/surgery
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Yang Y, Li X, Sun Z, Yang T, Tan Z, Wang B, Han X, He Z. The growth performance and meat quality of goats
fed diets based on maize or wheat grain. JOURNAL OF ANIMAL AND FEED SCIENCES 2012. [DOI: 10.22358/jafs/66133/2012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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111
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Nakayama M, Sasaki R, Ogino C, Tanaka T, Umetsu M, Ohara S, Tan Z, Sato K, Numako C, Kondo A. Novel Radiosensitization Through Reactive Oxygen Species Generation Using Titanium Peroxide Nanoparticle Compounds Against Pancreas Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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112
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Kapadia A, Samei E, Harrawood B, Sahbaee P, Chawla A, Tan Z, Brady D. SU-E-I-77: X-Ray Coherent Scatter Diffraction Pattern Modeling in GEANT4. Med Phys 2012; 39:3642-3643. [PMID: 28517670 DOI: 10.1118/1.4734794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To model X-ray coherent scatter diffraction patterns in GEANT4 for simulating experiments involving material detection through diffraction pattern measurement. Although coherent scatter cross-sections are modeled accurately in GEANT4, diffraction patterns for crystalline materials are not yet included. Here we describe our modeling of crystalline diffraction patterns in GEANT4 for specific materials and the validation of the results against experimentally measured data. METHODS Coherent scatter in GEANT4 is currently based on Hubbell's non-relativistic form factor tabulations from EPDL97. We modified the form-factors by introducing an interference function that accounts for the angular dependence between the Rayleigh-scattered photons and the photon wavelength. The modified form factors were used to replace the inherent form-factors in GEANT4. The simulation was tested using monochromatic and polychromatic x-ray beams (separately) incident on objects containing one or more elements with modified form-factors. The simulation results were compared against the experimentally measured diffraction images of corresponding objects using an in-house x-ray diffraction imager for validation. The comparison was made using the following metrics: number of diffraction rings, radial distance, absolute intensity, and relative intensity. RESULTS Sharp diffraction pattern rings were observed in the monochromatic simulations at locations consistent with the angular dependence of the photon wavelength. In the polychromatic simulations, the diffraction patterns exhibited a radial blur consistent with the energy spread of the polychromatic spectrum. The simulated and experimentally measured patterns showed identical numbers of rings with close agreement in radial distance, absolute and relative intensities (barring statistical fluctuations). No significant change was observed in the execution time of the simulations. CONCLUSIONS This work demonstrates the ability to model coherent scatter diffraction in GEANT4 in an accurate and efficient manner without compromising the accuracy or runtime of the simulation. This work was supported by the Department of Homeland Security under grant DHS (BAA 10-01 F075), and by the Department of Defense under award W81XWH-09-1-0066.
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Chaudhary HJ, Peng G, Hu M, He Y, Yang L, Luo Y, Tan Z. Genetic diversity of endophytic diazotrophs of the wild rice, Oryza alta and identification of the new diazotroph, Acinetobacter oryzae sp. nov. MICROBIAL ECOLOGY 2012; 63:813-821. [PMID: 22105517 DOI: 10.1007/s00248-011-9978-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 10/27/2011] [Indexed: 05/31/2023]
Abstract
Thirty-three endophytic diazotrophs were isolated from surface-sterilized leaves, stem, and roots of wild rice Oryza alta. The SDS-PAGE profile of total protein and insertion sequence-based polymerase chain reaction (IS-PCR) fingerprinting grouped the isolates into four clusters (I-IV). The 16S rRNA gene sequence homology of the representative strains B21, B31, B1, and B23 of clusters I, II, III, and IV were assigned to Pseudomonas oleovorans (99.2% similarity), Burkholderia fungorum (99.4% similarity), Enterobacter cloacae (98.9% similarity), and Acinetobacter johnsonii (98.4% similarity), respectively. The results showed wide genetic diversity of the putative diazotrophic strains of the wild rice, O. alta, and the strains of cluster IV are the first report of nitrogen-fixing Acinetobacter species. The cell size, phenotypic characters, total protein profile, genomic DNA fingerprinting, DNA-DNA hybridization, and antibiotic resistance differentiated strain B23(T) from its closest relatives A. johnsonii LMG999(T) and Acinetobacter haemolyticus LMG996(T). The DNA-DNA hybridization also distinguished the strain B23(T) from the closely related Acinetobacter species. Based on these data, a novel species, Acinetobacter oryzae sp. nov., and strain B23(T) (=LMG25575(T) = CGMCC1.10689(T)) as the type strain were proposed.
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Camargo E, Beiser A, Tan Z, Au R, DeCarli C, Pikula A, Kelly-Hayes M, Kase C, Wolf P, Seshadri S. Walking Speed, Handgrip Strength and Risk of Dementia and Stroke: The Framingham Offspring Study (S24.003). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s24.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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115
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Zhang X, Li Z, Tan Z, Guo J, Zhu H. [Isolation and identification of myxobacteria in the saline-alkaline soils of Akesu in Xinjiang]. WEI SHENG WU XUE BAO = ACTA MICROBIOLOGICA SINICA 2012; 52:160-168. [PMID: 22586993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To isolate myxobacteria and investigate their diversity in saline-alkaline soils from Akesu in Xinjiang. METHODS Conventional culture-dependent methods, e. g. baiting technique, water agar, soil extract agar and mineral agar, were used to isolate myxobacteria from 25 soil samples collected from Akesu areas of Xinjiang. Combining with physicochemical properties (acidity/alkalinity, salt concentration, vegetation and geographical locations) of the soil samples, myxobacterial diversity was studied. RESULTS In total 58 strains were isolated, and identified as belonging to 6 different genera, i.e. Myxococcus, Cystobacter, Corallococcus, Sorangium, Nannocystis and Polyangium of Myxococcales. The most frequent genus isolated was Myxococcus which may better adapt in harsh environments. Different myxobacterial diversity was detected in different habitat. CONCLUSION Myxobacteria diversity was low in saline-alkaline soils of Akesu in Xinjiang.
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Soh J, Xu S, Tan Z, Ng Z, Hing W, Wu T, Chan Y, Lee B. Evolving Prescription Trends in the Management of Childhood Wheeze in Singapore. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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117
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Du G, Ba D, Tan Z, Liu K. Research on Frictional Behavior of Tungsten Disulfide Thin Films Prepared by Rf Magnetron Sputtering on Restless Steel. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.phpro.2012.03.597] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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118
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Rao K, Tan Z, Chong C. 93 The Use of Pulse Oximetry as a Quick Screening Tool for Limb Ischemia in the Emergency Department. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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119
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Chen J, Chen W, Zhu M, Zhu Y, Yin H, Tan Z. Propofol attenuates angiotensin II-induced apoptosis in human coronary artery endothelial cells. Br J Anaesth 2011; 107:525-32. [DOI: 10.1093/bja/aer197] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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120
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Tan Z, Lu H. The critical speed for motion streak processing in early visual cortex. J Vis 2011. [DOI: 10.1167/11.11.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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121
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Tan Z. Efficient restricted estimators for conditional mean models with missing data. Biometrika 2011. [DOI: 10.1093/biomet/asr007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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122
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Han X, Feng F, Zu J, Tang S, Bamikole M, Tan Z, Zeng B, Zhou C, Wang M. Effects of conjugated linoleic acid supplementation on growth, carcass characteristics and fatty acid profiles of muscle and fat in growing-finishing pigs. JOURNAL OF ANIMAL AND FEED SCIENCES 2011. [DOI: 10.22358/jafs/66169/2011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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123
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Sun Z, Hu Y, Liu S, Tang S, Han X, Zhou C, Wang M, He Z, Tan Z. Net nutrient flux in visceral tissues of goats fed diets based on maize or wheat. JOURNAL OF ANIMAL AND FEED SCIENCES 2011. [DOI: 10.22358/jafs/66154/2011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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124
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Lefebvre O, Uzabiaga A, Shen YJ, Tan Z, Cheng YP, Liu W, Ng HY. Conception and optimization of a membrane electrode assembly microbial fuel cell (MEA-MFC) for treatment of domestic wastewater. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2011; 64:1527-1532. [PMID: 22179652 DOI: 10.2166/wst.2011.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A membrane electrode assembly (MEA) for microbial fuel cells (MEA-MFC) was developed for continuous electricity production while treating domestic wastewater concurrently. It was optimized via three upgraded versions (noted α, β and γ) in terms of design (current collectors, hydrophilic separator nature) and operating conditions (hydraulic retention time, external resistance, aeration rate, recirculation). An overall rise of power by over 100% from version α to γ shows the importance of factors such as the choice of proper construction materials and prevention of short-circuits. A power of 2.5 mW was generated with a hydraulic retention time of 2.3 h when a Selemion proton exchange membrane was used as a hydrophilic separator in the MEA and 2.8 mW were attained with a reverse osmosis membrane. The MFC also showed a competitive value of internal resistance (≈40-50 Ω) as compared to the literature, especially considering its large volume (3 L). However, the operation of our system in a complete loop where the anolyte was allowed to trickle over the cathode (version γ) resulted in system failure.
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Ye X, Zhang Y, Tan Z, Li K. Single-tube real-time multiple allele-specific PCR for genotyping chicken Mx gene G2032A SNP. Br Poult Sci 2010; 51:361-7. [PMID: 20680871 DOI: 10.1080/00071668.2010.499140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
1. A non-synonymous, single nucleotide polymorphism (G to A) at position 2032 (Ser 631 Asn) of the chicken Mx gene has been demonstrated to be related to resistance to antiviral activity. This study developed a new real-time PCR-based allelic discrimination assay for the rapid genotyping of the chicken Mx gene G2032A SNP. The distribution of the Mx gene G2032A SNP genotypes and the allele frequencies of A and G alleles among different chicken breed populations were screened with the use of this method. 2. We combined previously described allele-specific PCR and SYBR Green I-based real-time PCR melting curve analysis with a novel primer design strategy. A pair of outer nested primers was designed to amplify a fragment containing the SNP site, and two 3'-specific, allele-specific primers were combined with the outer primers to amplify SNP-specific fragments. Genotypes were identified based on the characteristic melting temperature of the SNP-specific fragments. 3. Genotyping assignments were successfully performed on samples from 8 chicken breeds, which were analysed by agarose gel electrophoresis of the PCR products and compared with results obtained from the direct sequencing of the outer primer amplicon. Five native breeds from Southern China carried a relatively higher frequency of the resistant A allele than the three commercial chicken lines. 4. This single-tube real-time multiplex allele-specific PCR assay is rapid, reliable, sensitive and easy to perform. It is appropriate for high-throughput sample analysis in large population-based Mx SNP genotyping studies.
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Zhao X, Javed CH, He Y, Zhang Z, Peng G, Tan Z. [Diversity of associated nitrogen-fixing bacteria isolated from the pioneer plants-Vetiver zizanioides]. WEI SHENG WU XUE BAO = ACTA MICROBIOLOGICA SINICA 2009; 49:1430-1437. [PMID: 20112669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE Vetiver zizanioides is a perennial grass of the Poaceae family, known of its silage, soil and water conservation role. The aim of the study was to collect and identify the resources of the nitrogen-fixing bacteria associated with Vetiver zizanioides. METHODS Associated nitrogen-fixing bacteria isolated from Vetiver zizanioides were studied by SDS-PAGE whole-cell protein patterns, insert sequence (IS)-PCR finger printing, utilization of sole carbon sources and 16S rRNA gene sequence analysis. RESULTS Based on the results of finger printing analysis, protein patterns and biological test, isolates were grouped into 6 clusters, except 4 single strains. Phylogenetic analysis of 16S rDNA sequences indicated that isolates belonged to Herbaspirillum frisingense, Enterobacter ludwigii, Pseudacidovorax intermedius, Mitsuaria chitosanitabida, Pseudomonas putida, Pseudomonas fluorescens, Burkholderia vietnamiensis and Enterobacter cloacae. CONCLUSION The nitrogen fixers associated with Vetiver zizanioides showed great diversity and may have a potential application for the grass forage and agriculture.
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Peng G, Tan Z, Luo H, Lai W, Zhang W, Xie H. Enterobacter oryzae sp. nov., a nitrogen-fixing bacterium isolated from the wild rice species Oryza latifolia. Int J Syst Evol Microbiol 2009. [DOI: 10.1099/00207713-59-10-2646-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Peng G, Zhang W, Luo H, Xie H, Lai W, Tan Z. Enterobacter oryzae sp. nov., a nitrogen-fixing bacterium isolated from the wild rice species Oryza latifolia. Int J Syst Evol Microbiol 2009; 59:1650-5. [PMID: 19578150 DOI: 10.1099/ijs.0.65484-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Twelve facultatively anaerobic, endophytic diazotrophs were isolated from surface-sterilized roots of the wild rice species Oryza latifolia and characterized by phenotypic and molecular methods. Six isolates were grouped together as group A by phenotypic characters, and this grouping was confirmed by SDS-PAGE whole-cell protein patterns and insertion sequence-based PCR (IS-PCR) methods. Phylogenetic analysis of the 16S rRNA gene sequence indicated that group A, represented by strain Ola 51(T), is closely related to Enterobacter radicincitans D5/23(T) (98.9 % similarity, except that E. radicincitans D5/23(T) has a 70 bp insertion) and Enterobacter cloacae (98.0 % similarity to the type strain). rpoB gene sequence analysis also showed strain Ola 51(T) has the highest sequence similarity to E. radicincitans DSM 16656(T) (98.3 %), but supported the distinct position. Biological and biochemical tests, protein patterns, genomic DNA fingerprinting, antibiotic resistance and comparison of cellular fatty acids showed differences among group A, E. radicincitans DSM 16656(T) and E. cloacae ATCC 13047(T). DNA-DNA hybridization distinguished strain Ola 51(T) from closely phylogenetically related Enterobacter species. Based on these data, the novel species Enterobacter oryzae sp. nov. is proposed, with strain Ola 51(T) (=LMG 24251(T) =CGMCC 1.7012(T)) as the type strain.
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Tang S, Sheng L, Tan Z, Tayo G, Liao H, Sun Z, Zeng B, Han X, Zhou C, Ren G. Morphological fractions and in vitro fermentation characteristics of five endosperm types maize stover harvested at two maturity stages. JOURNAL OF ANIMAL AND FEED SCIENCES 2009. [DOI: 10.22358/jafs/66433/2009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Peng G, Zhang W, Luo H, Xie H, Lai W, Tan Z. Enterobacter oryzae sp. nov., a nitrogen-fixing bacterium isolated from the wild rice species Oryza latifolia. Int J Syst Evol Microbiol 2009. [DOI: 10.1099/ijs.0.005967-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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132
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Tan Z, Zhang H, Abedi J, Yu Z, Martinuzzi R. Development of a new high-efficiency simple structure cyclone. CAN J CHEM ENG 2009. [DOI: 10.1002/cjce.20166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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133
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Cheng J, Small DS, Tan Z, Ten Have TR. Efficient nonparametric estimation of causal effects in randomized trials with noncompliance. Biometrika 2009. [DOI: 10.1093/biomet/asn056] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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134
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135
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Ko Y, Allen B, Tan Z, Sakhai S, Buckberg G. Controlled reperfusion prevents neurologic injury after global brain ischemia in a novel ischemic brain model. Crit Care 2009. [PMCID: PMC4083956 DOI: 10.1186/cc7234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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136
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Tan W, Chen Y, Zhang W, Han C, Tan Z, Zhang J. [Association of phytoplasma with Bermuda grass white-leaf disease]. WEI SHENG WU XUE BAO = ACTA MICROBIOLOGICA SINICA 2008; 48:1393-1397. [PMID: 19160824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE Bermuda grass white leaf is an important disease on Bermuda grass all over the world. The aim of this research is to identify the pathogen which leads to Bermuda grass white leaf occurring on the Chinese mainland. METHODS PCR amplification technique, sequence analysis and Southern hybridization were used. RESULTS A 1.3 kb fragment was amplified by PCR phytoplasma universal primers and total DNA sample extracted from ill Bermuda grass as the amplified template. Sequence analysis of the amplified fragment indicated it clustered into Candidatus Phytoplasm Cynodontis. Southern hybridization analysis showed differential cingulums. CONCLUSION The pathogen of Bermuda grass white leaf on the Chinese mainland contains phytoplasma, which provides a scientific basis for further identification, prevention and control of the disease.
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Peng G, Yuan Q, Li H, Zhang W, Tan Z. Rhizobium oryzae sp. nov., isolated from the wild rice Oryza alta. Int J Syst Evol Microbiol 2008; 58:2158-63. [PMID: 18768622 DOI: 10.1099/ijs.0.65632-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
During a study of endophytic nitrogen-fixing bacteria present in the wild rice species Oryza alta, eight novel isolates were obtained from surface-sterilized roots and classified in the genus Rhizobium on the basis of almost-complete 16S rRNA gene sequence analysis. These strains can nodulate Phaseolus vulgaris and Glycine max. The highly similar protein patterns, DNA fingerprint patterns of insertion sequence-based PCR (IS-PCR) and DNA-DNA hybridizations showed that these novel isolates were members of the same species. The closest phylogenetic relatives of the representative strain Alt 505(T) of the novel group were Rhizobium etli CFN 42(T) and Rhizobium indigoferae CCBAU 71714(T), with 96.2 and 96.0% 16S rRNA gene sequence similarity, respectively. Low DNA-DNA relatedness with the type strains of R. etli, R. indigoferae, Rhizobium hainanense, Rhizobium mongolense and Rhizobium galegae and differences in IS-PCR fingerprinting patterns, SDS-PAGE of proteins, antibiotic resistance, phenotypic tests and comparison of cellular fatty acids with Rhizobium species indicated that the novel group of isolates were distinct from previously described species. Based on these results, we propose to place them in a novel species, as Rhizobium oryzae sp. nov. The type strain is Alt 505(T) (=LMG 24253(T) =CGMCC 1.7048(T)).
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MESH Headings
- Bacterial Proteins/analysis
- Bacterial Typing Techniques
- DNA Fingerprinting
- DNA Transposable Elements
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Drug Resistance, Bacterial
- Electrophoresis, Polyacrylamide Gel
- Genes, rRNA
- Molecular Sequence Data
- Nucleic Acid Hybridization
- Oryza/microbiology
- Phylogeny
- Plant Roots/microbiology
- Polymerase Chain Reaction/methods
- Proteome/analysis
- RNA, Bacterial/genetics
- RNA, Ribosomal, 16S/genetics
- Rhizobium/classification
- Rhizobium/genetics
- Rhizobium/isolation & purification
- Rhizobium/physiology
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
- Glycine max/microbiology
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138
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Masuhara A, Tan Z, Kasai H, Nakanishi H, Oikawa H. Cyclic transformation in novel shape and phase of C 60nano/microcrystals. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308084572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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139
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Zhao X, Jiang H, Sun Z, Tang S, Zhou C, Cong Z, Tayo G, Tan Z. Effect of rice straw in the diet for growing goats on site
and extent of digestion and N balance. JOURNAL OF ANIMAL AND FEED SCIENCES 2007. [DOI: 10.22358/jafs/66794/2016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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140
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Tan Z, Sun X, Hou FS, Oh HW, Hilgenberg LGW, Hol EM, van Leeuwen FW, Smith MA, O'Dowd DK, Schreiber SS. Mutant ubiquitin found in Alzheimer's disease causes neuritic beading of mitochondria in association with neuronal degeneration. Cell Death Differ 2007; 14:1721-32. [PMID: 17571083 PMCID: PMC3258508 DOI: 10.1038/sj.cdd.4402180] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A dinucleotide deletion in human ubiquitin (Ub) B messenger RNA leads to formation of polyubiquitin (UbB)+1, which has been implicated in neuronal cell death in Alzheimer's and other neurodegenerative diseases. Previous studies demonstrate that UbB+1 protein causes proteasome dysfunction. However, the molecular mechanism of UbB+1-mediated neuronal degeneration remains unknown. We now report that UbB+1 causes neuritic beading, impairment of mitochondrial movements, mitochondrial stress and neuronal degeneration in primary neurons. Transfection of UbB+1 induced a buildup of mitochondria in neurites and dysregulation of mitochondrial motor proteins, in particular, through detachment of P74, the dynein intermediate chain, from mitochondria and decreased mitochondria-microtubule interactions. Altered distribution of mitochondria was associated with activation of both the mitochondrial stress and p53 cell death pathways. These results support the hypothesis that neuritic clogging of mitochondria by UbB+1 triggers a cascade of events characterized by local activation of mitochondrial stress followed by global cell death. Furthermore, UbB+1 small interfering RNA efficiently blocked expression of UbB+1 protein, attenuated neuritic beading and preserved cellular morphology, suggesting a potential neuroprotective strategy for certain neurodegenerative disorders.
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141
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Huang Y, Yin H, Han J, Huang B, Xu J, Zheng F, Tan Z, Fang M, Rui L, Chen D, Wang S, Zheng X, Wang CY, Gong F. Extracellular hmgb1 functions as an innate immune-mediator implicated in murine cardiac allograft acute rejection. Am J Transplant 2007; 7:799-808. [PMID: 17331117 DOI: 10.1111/j.1600-6143.2007.01734.x] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hmgb1, an evolutionarily conserved chromosomal protein, was recently re-discovered to be an innate immune-mediator contributing to both innate and adaptive immune responses. Here, we show a pivotal role for Hmgb1 in acute allograft rejection in a murine cardiac transplantation model. Extracellular Hmgb1 was found to be a potent stimulator for adaptive immune responses. Hmgb1 can be either passively released from damaged cells after organ harvest and ischemia/reperfusion insults, or actively secreted by allograft infiltrated immune cells. After transplantation, allografts show a significant temporal up-regulation of Hmgb1 expression accompanied by inflammatory infiltration, a consequence of graft destruction. These data suggest the involvement of Hmgb1 in acute allograft rejection. In line with these observations, treatment of recipients with rA-box, a specific blockade for endogenous Hmgb1, significantly prolonged cardiac allograft survival as compared to those recipients treated with either rGST or control vehicle. The enhanced graft survival is associated with reduced allograft expression of TNFalpha, IFNgamma and Hmgb1 and impaired Th1 immune response.
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142
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Peng G, Wang H, Zhang G, Hou W, Liu Y, Wang ET, Tan Z. Azospirillum melinis sp. nov., a group of diazotrophs isolated from tropical molasses grass. Int J Syst Evol Microbiol 2006; 56:1263-1271. [PMID: 16738102 DOI: 10.1099/ijs.0.64025-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Fifteen bacterial strains isolated from molasses grass (Melinis minutiflora Beauv.) were identified as nitrogen-fixers by using the acetylene-reduction assay and PCR amplification of nifH gene fragments. These strains were classified as a unique group by insertion sequence-PCR fingerprinting, SDS-PAGE protein patterns, DNA-DNA hybridization, 16S rRNA gene sequencing and morphological characterization. Phylogenetic analysis of the 16S rRNA gene indicated that these diazotrophic strains belonged to the genus Azospirillum and were closely related to Azospirillum lipoferum (with 97.5 % similarity). In all the analyses, including in addition phenotypic characterization using Biolog MicroPlates and comparison of cellular fatty acids, this novel group was found to be different from the most closely related species, Azospirillum lipoferum. Based on these data, a novel species, Azospirillum melinis sp. nov., is proposed for these endophytic diazotrophs of M. minutiflora, with TMCY 0552(T) (=CCBAU 5106001(T) = LMG 23364(T) = CGMCC 1.5340(T)) as the type strain.
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143
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Tang S, Tan Z, Zhou C, Jiang H, Jiang Y, Sheng L. A comparison of in vitro fermentation
characteristics of different botanical fractions
of mature maize stover. JOURNAL OF ANIMAL AND FEED SCIENCES 2006. [DOI: 10.22358/jafs/66920/2006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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144
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Ober C, Billstrand C, Kuldanek S, Tan Z. The miscarriage-associated HLA-G -725G allele influences transcription rates in JEG-3 cells. Hum Reprod 2006; 21:1743-8. [PMID: 16501035 DOI: 10.1093/humrep/del036] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND HLA-G is a non-classical HLA with important immunomodulatory roles in pregnancy. A polymorphism in the promoter region, -725G, was previously associated with sporadic miscarriage in women who were unselected with respect to reproductive history. In this study, the transcription levels of different HLA-G promoter haplotypes were examined to determine whether the miscarriage-associated -725G allele influences transcription. METHODS Five naturally occurring promoter haplotypes and three variant haplotypes created by site-directed mutagenesis were sub-cloned into luciferase expression vectors and transfected into JEG-3 cells. Expression levels of these eight haplotypes were examined in cultured cells before and after treatment with interferon-beta (IFN-beta), cytosine-5-DNA methyltransferase (M. SssI) and 5-aza-2'-deoxycytidine. Differences in expression levels between haplotypes were determined by analysis of variance (ANOVA). RESULT Promoter haplotypes with the miscarriage-associated -725G allele were expressed at significantly higher levels in all culture conditions compared with otherwise identical haplotypes that had a -725C or -725T allele. CONCLUSION Variation in the HLA-G promoter region influences transcription rates. Contrary to expectations, increased expression of HLA-G may be disadvantageous in some pregnancies.
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Tan Z, Fan J, Shon A, Schwartz M, Camoretti-Mercado B, Ober C. A Polymorphism in the HLA-G 3′-UTR Influences Targeting of mir-148 and is Associated with Asthma. J Allergy Clin Immunol 2006. [DOI: 10.1016/j.jaci.2005.12.563] [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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146
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Li J, Tan Z, Li T, Shu Y, Lo N, Fang C, Li Y, Zhuang G. ABR-025 Expression of LH and its receptor in human embryo and endometrium during the implantation window. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60448-3] [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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147
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Tan Z, Li J, Luo N, Li T, Fang C, Zhou C. Expression of Luteinizing Hormone in Human Oocytes and Preimplantantion Embryos. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.1080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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148
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Wang M, Tan Z, Thomas EK, Liang P. Conservation of the genomic structure and receptor-mediated signaling between human and rat IL-24. Genes Immun 2005; 5:363-70. [PMID: 15175645 DOI: 10.1038/sj.gene.6364101] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
IL-24/MDA-7 is a new member of the IL-10 family of cytokines, which signals through two heterodimeric receptor complexes (IL-20R1/IL-20R2 and IL-22R/IL-20R2). Previously, we identified a rat gene named mob-5, which encodes a secreted protein that shares a high degree of homology with human IL-24. Expression of mob-5 and its putative cell surface receptors was shown to be upregulated by oncogenic ras. Here we show that not only do rat mob-5 and human IL-24 share a strikingly similar genomic structure but also that the rat MOB-5 protein can bind to and signal through the human IL-24 receptors. Like human IL-24, binding of the rat MOB-5 protein to the human IL-24 receptors leads to activation of the JAK/STAT pathway, which in turn supports receptor-dependent survival and proliferation of Ba/F3 cells. Furthermore, using human colon cancer cell lines with somatic knockout of either the mutant or the wild-type k-ras allele, we demonstrate that the human IL-24 receptors also are upregulated by oncogenic ras. Taken together, these results provide strong experimental evidence that MOB-5 is indeed the rat homolog of human IL-24.
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149
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Koh S, Tan Z. Using e-commerce to gain a competitive advantage in 3PL enterprises in China. ACTA ACUST UNITED AC 2005. [DOI: 10.1504/ijlsm.2005.005970] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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150
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Tan Z, Murphy M. Ammonia production, ammonia absorption,
and urea recycling in ruminants. A review. JOURNAL OF ANIMAL AND FEED SCIENCES 2004. [DOI: 10.22358/jafs/67425/2004] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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