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Meng Lin,Renyong Jia,Mingshu Wang,Xinghong Gao,Dekang Zhu,Shun Chen,Mafeng Liu,Zhongqiong Yin,Yin Wang,Xiaoyue Chen,Anchun Cheng 대한수의학회 2014 JOURNAL OF VETERINARY SCIENCE Vol.15 No.3
The UL49.5 gene of most herpesviruses is conserved andencodes glycoprotein N. However, the UL49.5 protein ofduck enteritis virus (DEV) (pUL49.5) has not been reported. In the current study, the DEV pUL49.5 gene was firstsubjected to molecular characterization. To verify thepredicted intracellular localization of gene expression, therecombinant plasmid pEGFP-C1/pUL49.5 was constructedand used to transfect duck embryo fibroblasts. Next, therecombinant plasmid pDsRed1-N1/ glycoprotein M (gM)was produced and used for co-transfection with thepEGFP-C1/pUL49.5 plasmid to determine whether DEVpUL49.5 and gM (a conserved protein in herpesviruses)colocalize. DEV pUL49.5 was thought to be an envelopeglycoprotein with a signal peptide and two transmembranedomains. This protein was also predicted to localize in thecytoplasm and endoplasmic reticulum with a probability of66.7%. Images taken by a fluorescence microscope atdifferent time points revealed that the DEV pUL49.5 andgM proteins were both expressed in the cytoplasm. Overlapof the two different fluorescence signals appeared 12 h aftertransfection and continued to persist until the end of theexperiment. These data indicate a possible interaction between DEV pUL49.5 and gM.
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Distribution of Inter-Contact Time: An Analysis-Based on Social Relationships
Kaimin Wei,Renyong Duan,Guangzhou Shi,Ke Xu 한국통신학회 2013 Journal of communications and networks Vol.15 No.5
Communication in delay tolerant networks (DTNs) relieson message transport by mobile nodes, and a correct understandingof the node mobility characteristics is therefore crucial tothe design of an efficient DTN routing protocol. However, previouswork has mainly focused on uncovering all behaviors of nodemovement, which is not conducive to accurately detecting the specificmovement characteristics of a different node. In this paper, weseek to address this problembased on a consideration of social relationships. We first consider social ties from both static and dynamicperspectives. For a static perspective, in addition to certain accidentalevents, social relations are considered for a long time granularityand tend to be stable over time. For a dynamic perspective,social relations are analyzed in a relatively short time granularityand are likely to change over time. Based on these perspectives,we adopted different efficient approaches to dividing node pairsinto two classes, i.e., familiar and unfamiliar pairs. A threshold approachis used for static social ties whereas a density-based aggregationmethod is used for dynamic social relationships. Extensiveexperimental results show that both familiar and unfamiliar nodepairs have the same inter-contact time distribution, which closelyfollows a power-law decay up to a certain point, beyond which itbegins to exponentially decay. The results also demonstrate that theinter-contact time distribution of familiar pairs decays faster thanthat of unfamiliar pairs, whether from a static or dynamic perspective. In addition, we also analyze the reason for the differencebetween the inter-contact time distributions of both unfamiliar andfamiliar pairs.
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Distribution of Inter-Contact Time: An Analysis-Based on Social Relationships
Wei, Kaimin,Duan, Renyong,Shi, Guangzhou,Xu, Ke The Korea Institute of Information and Commucation 2013 Journal of communications and networks Vol.15 No.5
Communication in delay tolerant networks (DTNs) relies on message transport by mobile nodes, and a correct understanding of the node mobility characteristics is therefore crucial to the design of an efficient DTN routing protocol. However, previous work has mainly focused on uncovering all behaviors of node movement, which is not conducive to accurately detecting the specific movement characteristics of a different node. In this paper, we seek to address this problem based on a consideration of social relationships. We first consider social ties from both static and dynamic perspectives. For a static perspective, in addition to certain accidental events, social relations are considered for a long time granularity and tend to be stable over time. For a dynamic perspective, social relations are analyzed in a relatively short time granularity and are likely to change over time. Based on these perspectives, we adopted different efficient approaches to dividing node pairs into two classes, i.e., familiar and unfamiliar pairs. A threshold approach is used for static social ties whereas a density-based aggregation method is used for dynamic social relationships. Extensive experimental results show that both familiar and unfamiliar node pairs have the same inter-contact time distribution, which closely follows a power-law decay up to a certain point, beyond which it begins to exponentially decay. The results also demonstrate that the inter-contact time distribution of familiar pairs decays faster than that of unfamiliar pairs, whether from a static or dynamic perspective. In addition, we also analyze the reason for the difference between the inter-contact time distributions of both unfamiliar and familiar pairs.
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Apoptosis induced in vivo by new type gosling viral enteritis virus
Shun Chen,Anchun Cheng,Mingshu Wang,Dekang Zhu,Renyong Jia,Qihui Luo,Hengmin Cui,Yi Zhou,Yin Wang,Zhiwen Xu,Zhengli Chen,Xiaoyue Chen,Xiaoyu Wang 대한수의학회 2011 JOURNAL OF VETERINARY SCIENCE Vol.12 No.4
In this study, apoptosis was induced by new type gosling viral enteritis virus (NGVEV) in experimentally infected goslings is reported in detail for the first time. After 3-day-old goslings were orally inoculated with a NGVEV-CN strain suspension, the time course of NGVEV effects on apoptotic morphological changes of the internal tissues was evaluated. These changes were observed by histological analysis with light microscopy and ultrastructural analysis with transmission electron microscopy. DNA fragmentation was assessed with a terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay and DNA ladder analysis. A series of characteristic apoptotic morphological changes including chromatin condensation and margination, cytoplasmic shrinkage, plasma membrane blebbing, and formation of apoptotic bodies were noted. Apoptosis was readily observed in the lymphoid and gastrointestinal organs, and sporadically occurred in other organs after 3 days post-infection (PI). The presence and quantity of TUNEL-positive cells increased with infection time until 9 days PI. DNA extracted from the NGVEV-infected gosling cells displayed characteristic 180~200 bp ladders. Apoptotic cells were ubiquitously distributed, especially among lymphocytes, macrophages, monocytes, and epithelial and intestinal cells. Necrosis was subsequently detected during the late NGVEV-infection phase, which was characterized by cell swelling, plasma membrane collapse, and rapidly lysis. Our results suggested that apoptosis may play an important role in the pathogenesis of NGVE disease.
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