keyword
MENU ▼
Read by QxMD icon Read
search

PRRSV

keyword
https://www.readbyqxmd.com/read/28727780/comparative-analysis-of-signature-genes-in-prrsv-infected-porcine-monocyte-derived-cells-to-different-stimuli
#1
Laura C Miller, Damarius S Fleming, Xiangdong Li, Darrell O Bayles, Frank Blecha, Yongming Sang
Monocyte-derived DCs (mDCs) are major target cells in porcine reproductive and respiratory syndrome virus (PRRSV) pathogenesis; however, the plasticity of mDCs in response to activation stimuli and PRRSV infection remains unstudied. In this study, we polarized mDCs, and applied genome-wide transcriptomic analysis and predicted protein-protein interaction networks to compare signature genes involved in mDCs activation and response to PRRSV infection. Porcine mDCs were polarized with mediators for 30 hours, then mock-infected, infected with PRRSV strain VR2332, or a highly pathogenic PRRSV strain (rJXwn06), for 5 h...
2017: PloS One
https://www.readbyqxmd.com/read/28725105/porcine-reproductive-and-respiratory-syndrome-virus-prrsv-in-pig-meat
#2
Philippe Raymond, Christian Bellehumeur, Malliga Nagarajan, Diane Longtin, Alexandra Ferland, Peter Müller, Rachel Bissonnette, Carole Simard
Porcine reproductive and respiratory syndrome, caused by the porcine reproductive and respiratory syndrome virus (PRRSV), is an economically important disease in the swine industry. Previous studies demonstrated the presence of the virus in pig meat and its transmissibility by oral consumption. This study further analyzed the infectivity of PRRSV in commercial pig meat. Fresh bottom meat pieces (n = 1500) randomly selected over a period of 2 y from a pork ham boning plant located in Quebec, Canada, were tested by reverse transcriptase polymerase chain reaction (RT-PCR)...
July 2017: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
https://www.readbyqxmd.com/read/28724759/cholesterol-25-hydroxylase-inhibits-porcine-reproductive-and-respiratory-syndrome-virus-replication-through-enzyme-activity-dependent-and-independent-mechanisms
#3
Wenting Ke, Liurong Fang, Huiyuan Jing, Ran Tao, Ting Wang, Yang Li, Siwen Long, Dang Wang, Shaobo Xiao
Cholesterol 25-hydroxylase (CH25H) has recently been identified as a host restriction factor that exerts antiviral effects by catalyzing the production of 25-hydroxycholesterol (25HC). CH25H can be rapidly induced upon infection with some viruses. Porcine reproductive and respiratory syndrome virus (PRRSV), an arterivirus, has ranked among the most important swine pathogens since it was discovered in the late 1980s. In this study, we found that PRRSV infection significantly downregulated the expression of CH25H in cells by a so far unknown mechanism, suggesting that CH25H might exert antiviral activity against PRRSV...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28719658/optisampletm-open-web-based-application-to-optimize-sampling-strategies-for-active-surveillance-activities-at-the-herd-level-illustrated-using-porcine-respiratory-reproductive-syndrome-prrs
#4
Anna Alba, Robert E Morrison, Ann Cheeran, Albert Rovira, Julio Alvarez, Andres M Perez
Porcine reproductive and respiratory syndrome virus (PRRSv) infection causes a devastating economic impact to the swine industry. Active surveillance is routinely conducted in many swine herds to demonstrate freedom from PRRSv infection. The design of efficient active surveillance sampling schemes is challenging because optimum surveillance strategies may differ depending on infection status, herd structure, management, or resources for conducting sampling. Here, we present an open web-based application, named 'OptisampleTM', designed to optimize herd sampling strategies to substantiate freedom of infection considering also costs of testing...
2017: PloS One
https://www.readbyqxmd.com/read/28716191/effect-of-immunologic-solutions-on-sows-and-gilts-on-time-to-stability-and-production-losses-in-breeding-herds-infected-with-1-7-4-prrsv
#5
D C L Linhares, C Betlach, R B Morrison
Porcine reproductive and respiratory syndrome virus (PRRSv) is an economically significant swine pathogen causing production losses in the global swine industry. Clinical impact depends on many factors including the virus itself. One method to sub-type PRRSv is using restriction fragment length polymorphism (RFLP). The RFLP pattern 1-7-4 emerged within the United States swine industry in 2014 and has become prevalent since then. This was a field study that prospectively followed 1-7-4-infected breeding herds (n=107) and compared time to stability (TTS), time to baseline production (TTBP) and total loss per 1000 sows between herds using modified-live virus vaccine (MLV) on sows and gilts (MLV-MLV), MLV on sows and MLV in addition to field virus exposure on gilts (MLV-MLV/FVE) or not deliberately exposing sows or gilts to PRRSv (Natural-Natural)...
September 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28713014/a-recombinant-type-2-porcine-reproductive-and-respiratory-syndrome-virus-between-nadc30-like-and-a-mlv-like-genetic-characterization-and-pathogenicity-for-piglets
#6
Ting Bian, Yingfeng Sun, Meng Hao, Lei Zhou, Xinna Ge, Xin Guo, Jun Han, Hanchun Yang
Porcine reproductive and respiratory syndrome virus (PRRSV) is an economically important pathogen for swine industry worldwide. The recombination occurring among PRRSV strains has been recognized as one of important molecular mechanisms for the evolution of PRRSV. Current prevalence of PRRSV NADC30-like causing clinical disease outbreaks is highly concerned in China. In the present study, the genetic characterization of a recombinant type 2 PRRSV (designated TJnh1501) was analyzed and its pathogenicity for piglets was examined...
July 13, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28704922/transcriptome-differences-in-porcine-alveolar-macrophages-from-tongcheng-and-large-white-pigs-in-response-to-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-infection
#7
Wan Liang, Likai Ji, Yu Zhang, Yueran Zhen, Qingde Zhang, Xuewen Xu, Bang Liu
Porcine reproductive and respiratory syndrome virus (PRRSV) is a single-stranded positive-sense RNA virus that can cause devastating reproductive failure and respiratory tract lesions, which has led to serious damage to the swine industry worldwide. Our previous studies have indicated that Tongcheng (TC) pigs, a Chinese local breed, have stronger resistance or tolerance to PRRSV infection than Large White (LW) pigs. This study aims to investigate their host transcriptome differences in porcine alveolar macrophages (PAMs) at 7 days post challenge...
July 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28699875/the-middle-half-genome-of-interferon-inducing-porcine-reproductive-and-respiratory-syndrome-virus-strain-a2mc2-is-essential-for-interferon-induction
#8
Zexu Ma, Ying Yu, Yueqiang Xiao, Tanja Opriessnig, Rong Wang, Liping Yang, Yuchen Nan, Siba K Samal, Patrick G Halbur, Yan-Jin Zhang
Porcine reproductive and respiratory syndrome virus (PRRSV) is known to antagonize the innate immune response. An atypical PRRSV strain A2MC2 is capable of inducing synthesis of type I interferons (IFNs) in cultured cells. Here, we show that the middle half of the A2MC2 genome is needed for triggering the IFN synthesis. First, a cDNA infectious clone of this atypical strain was constructed as a DNA-launched version. Virus recovery was achieved from the infectious clone and the recovered virus, rA2MC2, was characterized...
July 13, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28694521/genome-wide-analysis-of-long-noncoding-rna-profiling-in-prrsv-infected-pam-cells-by-rna-sequencing
#9
Jing Zhang, Pu Sun, Lipeng Gan, Weijie Bai, Zhijia Wang, Dong Li, Yimei Cao, Yuanfang Fu, Pinghua Li, Xingwen Bai, Xueqing Ma, Huifang Bao, Yingli Chen, Zaixin Liu, Zengjun Lu
Porcine reproductive and respiratory syndrome (PRRS) is a major threat to the global swine industry and causes tremendous economic losses. Its causative agent, porcine reproductive and respiratory syndrome virus (PRRSV), primarily infects immune cells, such as porcine alveolar macrophages and dendritic cells. PRRSV infection results in immune suppression, antibody-dependent enhancement, and persistent infection. Highly pathogenic strains in China cause high fever and severe inflammatory responses in the lungs...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28693575/interleukin-2-enhancer-binding-factor-2-interacts-with-the-nsp9-or-nsp2-of-porcine-reproductive-and-respiratory-syndrome-virus-and-exerts-negatively-regulatory-effect-on-the-viral-replication
#10
Xuexia Wen, Ting Bian, Zhibang Zhang, Lei Zhou, Xinna Ge, Jun Han, Xin Guo, Hanchun Yang, Kangzhen Yu
BACKGROUND: Porcine reproductive and respiratory syndrome virus (PRRSV) causes reproductive failures in sows and respiratory diseases in growing pigs, resulting in huge economic loss for the pig production worldwide. The nonstructural protein 9 (nsp9) and nonstructural protein 2 (nsp2) of PRRSV are known to play important roles in viral replication. Cellular interleukin-2 enhancer binding factor 2 (ILF2) participates in many cellular pathways and involves in life cycle of some viruses...
July 11, 2017: Virology Journal
https://www.readbyqxmd.com/read/28693303/a-new-recombined-prrsv-virulent-strain-in-china
#11
Jian-Guo Dong, Lin-Yang Yu, Pei-Pei Wang, Le-Yi Zhang, Yan-Ling Liu, Peng-Shuai Liang, Chang-Xu Song
Porcine reproductive and respiratory syndrome (PRRS) is one of the most important swine diseases worldwide. In the present study, a new virulent strain of PRRS virus(PRRSV) GDsg was isolated in Guangdong province of China, which caused high fever, high morbidity and high mortality for sow and piglets. The genome of this new strain is 15,413 nucleotides(nt) in length and comparative analysis revealed that GDsg shared 82.4% to 94% identity with type 2 PRRSV strains, but only 61.5% with type 1 PRRSV strain-Lelystad Virus, Phylogenetic analysis indicated that type 2 PRRSV isolates formed five subgenotypes (I, II, III, IV, V), which was represented by NADC30, VR-2332, GM2, CH-1a and HuN4, respectively...
July 10, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28689650/relative-contribution-of-porcine-reproductive-and-respiratory-syndrome-virus-open-reading-frames-2-4-to-the-induction-of-protective-immunity
#12
Kathryn Kimpston-Burkgren, Ignacio Correas, Fernando A Osorio, David Steffen, Asit K Pattnaik, Ying Fang, Hiep L X Vu
The minor glycoproteins (GPs) of PRRSV, GP2, GP3, and GP4, form a heterotrimer that is required for viral infectivity, presumably due to its interaction with the key cellular receptor CD163. These 3GPs are encoded by open reading frames (ORFs) 2a, 3 and 4 (herein referred to as ORFs 2-4), respectively. The goal of this study was to investigate the immunogenicity of the PRRSV-2 minor GPs. Through the use of reverse genetics, a chimeric virus (designated SDFL24) was constructed by replacing ORFs 2-4 of the PRRSV-1 strain SD01-08 with the corresponding genes of the PRRSV-2 strain FL12...
July 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28669806/the-development-of-a-sensitive-droplet-digital-pcr-for-quantitative-detection-of-porcine-reproductive-and-respiratory-syndrome-virus
#13
Qi Yang, Jun Xi, Xinxin Chen, Sihong Hu, Nan Chen, Songlin Qiao, Shaogui Wan, Dengke Bao
Porcine reproductive and respiratory syndrome (PRRS) is an infectious disease, resulting in important economic losses in pig farming. Prompt detection of PRRS virus (PRRSV) in the field samples is important for effective PRRS control. Droplet digital PCR (ddPCR) is a novel PCR technology, which offers good precision and direct quantification without using calibration curves. In this study, we established a ddPCR system for the sensitive and accurate quantification of PRRSV. Specificity of the assay was determined by the failure of amplification of other relevant viruses...
June 30, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28669387/amplification-and-selection-of-prrsv-activated-vdj-repertoires-in-pigs-secreting-distinct-neutralizing-antiboidies
#14
Nanhua Chen, Benjamin R Trible, Raymond R R Rowland
Neutralizing antibodies (nAbs) play an important role in protective immunity against porcine reproductive and respiratory syndrome virus (PRRSV) infection. However, the characterization of PRRSV nAb repertoires is rarely investigated. In this study, we developed a swine VDJ amplification method and selection criteria for the characterization of PRRSV-activated VDJ repertoires. According to clonal expansion theory, two separated aliquots of lymph nodes from pigs producing different PRRSV nAbs were utilized to determine the activated B-cell repertoires...
July 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28659596/novel-approaches-for-spatial-and-molecular-surveillance-of-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-in-the-united-states
#15
Moh A Alkhamis, Andreia G Arruda, Robert B Morrison, Andres M Perez
The US swine industry has been impaired over the last 25 years by the far-reaching financial losses caused by the porcine reproductive and respiratory syndrome (PRRS). Here, we explored the relations between the spatial risk of PRRS outbreaks and its phylodynamic history in the U.S during 1998-2016 using ORF5 sequences collected from swine farms in the Midwest region. We used maximum entropy and Bayesian phylodynamic models to generate risk maps for PRRS outbreaks and reconstructed the evolutionary history of three selected phylogenetic clades (A, B and C)...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28659471/the-nucleocapsid-protein-and-non-structural-protein-10-of-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-enhance-cd83-production-via-nf-%C3%AE%C2%BAb-and-sp1-signaling-pathways
#16
Xi Chen, Qiaoya Zhang, Juan Bai, Yongxiang Zhao, Xianwei Wang, Haiyan Wang, Ping Jiang
Porcine reproductive and respiratory syndrome, caused by the virus of the same name (PRRSV) is a panzootic disease, and one of the most economically costly to the swine industry. A key aspect of PRRSV virulence is that the virus suppresses the innate immune response and induces persistent infection, although the underlying mechanisms are not well understood. The dendritic cell (DC) marker CD83 belongs to the immunoglobulin superfamily and is associated with DC activation and immunosuppression of T cell proliferation when expressed as soluble CD83 (sCD83)...
June 28, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28652073/antiviral-strategies-against-prrsv-infection
#17
REVIEW
Taofeng Du, Yuchen Nan, Shuqi Xiao, Qin Zhao, En-Min Zhou
PRRSV (porcine reproductive and respiratory syndrome virus) is a major economically significant pathogen that has adversely impacted the global swine industry for almost 30 years. Currently PRRSV is estimated to cause losses of almost US$600 million per year in the USA. Except for new mutants that continually emerge during PRRSV outbreaks, our understanding of the virology, origin, and evolution of PRRSV and the host's immune response are largely inadequate. Such limited knowledge impedes development of effective methods to eradicate this virus...
June 23, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28648849/cellular-dead-box-rna-helicase-18-ddx18-promotes-the-prrsv-replication-via-interaction-with-virus-nsp2-and-nsp10
#18
Huan Jin, Lei Zhou, Xinna Ge, Han Zhang, Ruimin Zhang, Cong Wang, Li Wang, Zhibang Zhang, Hanchun Yang, Xin Guo
Porcine reproductive and respiratory syndrome virus (PRRSV) is an aetiological agent that can lead to reproductive failure and respiratory diseases of pigs. The replication and pathogenesis of PRRSV, although poorly understood, has been associated with the host factors. DDX18 is a member of DEAD-box RNA helicases (DDXs) family which were proved to participate in viral replication. Previously, we found the DDX18 interacts with both nsp2 and nsp10 of PRRSV by Co-Immunoprecipitation (Co-IP). In the present study, we demonstrated the interactions of DDX18 with nsp2 and nsp10, and located DDX18's binding regions as the N-terminus of nsp2 and both the N-terminus and C-terminus of nsp10...
June 22, 2017: Virus Research
https://www.readbyqxmd.com/read/28647517/proteomics-to-study-macrophage-response-to-viral-infection
#19
Tuula A Nyman, Sampsa Matikainen
Viral infections are a major burden to human and animal health. Immune response against viruses consists of innate and adaptive immunity which are both critical for the eradication of the viral infection. The innate immune system is the first line of defense against viral infections. Proper innate immune response is required for the activation of adaptive, humoral and cell-mediated immunity. Macrophages are innate immune cells which have a central role in detecting viral infections including influenza A and human immunodeficiency viruses...
June 21, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28629383/epitope-mapping-and-characterization-of-a-novel-nsp10-specific-monoclonal-antibody-that-differentiates-genotype-2-prrsv-from-genotype-1-prrsv
#20
Zhibang Zhang, Xuexia Wen, Jianguo Dong, Xinna Ge, Lei Zhou, Hanchun Yang, Xin Guo
BACKGROUND: Porcine reproductive and respiratory syndrome virus (PRRSV), the causative agent of PRRS, has two distinct and highly diverse genotypes (genotype 1 and genotype 2) in the field. Accurate diagnosis and differentiation of the two genotypes of PRRSV are critical to the effective prevention and control of PRRS. The non-structural protein 10 (Nsp10) plays a vital role in viral replication and is one of the most conserved proteins of PRRSV, thus constituting a good candidate for PRRSV diagnosis...
June 19, 2017: Virology Journal
keyword
keyword
113136
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"