Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| vaccination of mice with plasmids expressing processed capsid protein of foot-and-mouth disease virus--importance of dominant and subdominant epitopes for antigenicity and protection. | the capsid of foot-and-mouth disease virus (fmdv) displays several independent b cell epitopes, which stimulate the production of neutralising antibodies. some of these epitopes are highly variable between virus strains, but dominate the immune response. the site a on vp1 is the most prominent example of a dominant and variable site. this variability is a problem when designing vaccines against this disease, because it necessitates a close match between vaccine strain and virus in an outbreak. w ... | 2007 | 17640782 |
| antigen and vaccine banks: technical requirements and the role of the european antigen bank in emergency foot and mouth disease vaccination. | antigen and vaccine banks are stocks of immunogenic materials ready to be formulated into vaccines (bulk antigens) or ready to use (vaccines) in case of need by one or more of the parties of the bank. these stocks were primarily developed by foot and mouth disease [fmd] free european countries to control unexpected severe fmd episodes after the cessation of routine vaccination in the 1990s. for various reasons, including the lack of suitable antigens or of discriminatory tests to be used followi ... | 2007 | 17633297 |
| a continuous assay for foot-and-mouth disease virus 3c protease activity. | foot-and-mouth disease virus is a highly contagious pathogen that spreads rapidly among livestock and is capable of causing widespread agricultural and economic devastation. the virus genome is translated to produce a single polypeptide chain that subsequently is cleaved by viral proteases into mature protein products, with one protease, 3c(pro), carrying out the majority of the cleavages. the highly conserved nature of this protease across different viral strains and its crucial role in viral m ... | 2007 | 17631855 |
| foot-and-mouth disease virus (o/ukg/2001) is poorly transmitted between sheep by the airborne route. | foot-and-mouth disease virus (fmdv) can be spread by the airborne route and therefore atmospheric dispersion models have been developed to predict where the virus might spread during a disease outbreak. airborne transmission between sheep of the fmdv strain involved in the outbreak in europe in 2001 (o/ukg/2001) was studied experimentally. recipient animals were exposed to two donor sheep excreting virus for 2, 4, 6, 8 or 24 h. although fmdv was detected in air samples collected during challenge ... | 2008 | 17629524 |
| a recombinant pseudorabies virus co-expressing capsid proteins precursor p1-2a of fmdv and vp2 protein of porcine parvovirus: a trivalent vaccine candidate. | pseudorabies (pr), foot-and-mouth disease (fmd), and porcine parvovirus disease are three important infectious diseases in swine worldwide. the gene-deleted pseudorabies virus (prv) has been used as a live-viral vector to develop multivalent genetic engineering vaccine. in this study, a recombinant prv, which could co-express protein precursor p1-2a of fmdv and vp2 protein of ppv, was constructed using prv tk(-)/ge(-)/lacz(+) mutant as the vector. after homologous recombination and plaque purifi ... | 2007 | 17628752 |
| complete nucleotide sequence of a chinese serotype asia1 vaccine strain of foot-and-mouth disease virus. | the full-length nucleotide sequence of the chinese vaccine strain asia1/ynbs/58 of foot-and-mouth disease virus (fmdv) was determined. the results showed that the complete genome of ynbs/58 is 8,164 nucleotides (nt) in length including a 1,061-nt 5' untranslated region (utr), a 6,990-nt open reading frame (orf), and a 113-nt 3' utr. genome sequences of asia1/ynbs/58 and other known fmdv strains were compared. the homology analysis indicated that non-structural proteins are more conserved than st ... | 2007 | 17619135 |
| immunogenicity of plasmids encoding p12a and 3c of fmdv and swine il-18. | in this paper, two recombinant plasmids (pvir-p12ail18-3c and pvir-p12a-3c) containing foot and mouth disease virus (fmdv) capsid polypeptide, 3c coding regions of o/ny00 and using/or not swine il18 as a genetic adjuvant were constructed, and evaluated for their ability to induce humoral and cellular responses in mice and swine. in addition, the ability to protect swine against homologous virus challenge was examined. mice and swine were given booster vaccination twice and once, respectively, an ... | 2007 | 17606304 |
| bacterial magnetic particles (bmps)-pei as a novel and efficient non-viral gene delivery system. | non-viral methods of gene delivery, especially using polyethylenimine (pei), have been widely used in gene therapy or dna vaccination. however, the pei system has its own drawbacks, which limits its applications. | 2007 | 17605136 |
| development and validation of a 3abc indirect elisa for differentiation of foot-and-mouth disease virus infected from vaccinated animals. | non-structural protein (nsp) 3abc antibody is considered to be the most reliable indicator of present or past infection with foot-and-mouth disease virus (fmdv) in vaccinated animals. an indirect elisa was established, using purified his-tagged 3abc fusion protein as antigen, for detection of the antibody response to fmdv nsp 3abc in different animal species. the method was validated by simultaneous detection of the early antibody responses to nsp and structural protein (sp) in fmdv asia 1 infec ... | 2007 | 17601688 |
| differential factor requirement to assemble translation initiation complexes at the alternative start codons of foot-and-mouth disease virus rna. | the foot-and-mouth disease virus (fmdv) rna contains two in-frame aug codons separated by 84 nt that direct translation initiation of the viral polyprotein. the mechanism of initiation at the ires-proximal aug codon (aug1) has been previously analyzed, whereas no data on factor requirements for aug2 have been reported. here, using the method of 48s translation initiation complex reconstitution, we show that eif1 is indispensable in forming the 48s initiation complex at aug2. in contrast, it redu ... | 2007 | 17592045 |
| thermal inactivation of foot-and-mouth disease virus in milk using high-temperature, short-time pasteurization. | previous studies of laboratory simulation of high temperature, short time pasteurization (htst) to eliminate foot-and-mouth disease virus (fmdv) in milk have shown that the virus is not completely inactivated at the legal pasteurization minimum (71.7 degrees c/15 s) but is inactivated in a flow apparatus at 148 degrees c with holding times of 2 to 3 s. it was the intent of this study to determine whether htst pasteurization conducted in a continuous-flow pasteurizer that simulates commercial ope ... | 2007 | 17582103 |
| [secreted expression of nonstructural protein gene 3abc of foot-and-mouth disease virus in sf9 cells and activity analysis]. | entire 3abc sequence of fmdv containing a 6 x his tag coding sequence at the n-terminal was obtained through pcr amplification using a pair of specific primers, subcloned into shuttle plasmid of pmelbac-b with a melittin secretion signal sequence and finally constructed recombinant plasmid of pmel-3abc. after co-transfected the recombinant plasmid and linearized bac-n-blue dna into sf9 insect cell under intermediary agent of the cellfectin, the result showed that we have already acquired recombi ... | 2007 | 17578009 |
| the early protective thymus-independent antibody response to foot-and-mouth disease virus is mediated by splenic cd9+ b lymphocytes. | infection of mice with cytopathic foot-and-mouth disease virus (fmdv) induces a rapid and specific thymus-independent (ti) neutralizing antibody response that promptly clears the virus. herein, it is shown that fmdv-infected dendritic cells (dcs) directly stimulate splenic innate-like cd9(+) b lymphocytes to rapidly (3 days) produce neutralizing anti-fmdv immunoglobulin m antibodies without t-lymphocyte collaboration. in contrast, neither follicular (cd9(-)) b lymphocytes from the spleen nor b l ... | 2007 | 17567692 |
| analysis of foot-and-mouth disease virus replication using strand-specific quantitative rt-pcr. | foot-and-mouth disease virus (fmdv) is a positive-sense, single stranded rna virus and its replication involves the synthesis of a negative strand intermediate. in the present study, a strand-specific quantitative rt-pcr assay was developed for analysis of fmdv replication. strand-specific detection of viral positive and negative strand rna was achieved using a high reverse transcription (rt) temperature (62 degrees c) and a tagged rt primer. in both the positive and negative strand assays, the ... | 2007 | 17561277 |
| comparisons of the complete genomes of two chinese isolates of a recent foot-and-mouth disease type asia 1 virus. | china reported the first outbreak of foot-and-mouth disease (fmd) serotype asia 1 in chinese hong kong in march, 2005. subsequently, this type of the virus was reported from mainland of china in april 2005. up to september of 2006, it was detected in more than 15 areas of china. in this paper, the complete genomes of two chinese isolates, asia 1/hnk/cha/05 and asia 1/js/cha/05, of foot-and-mouth disease virus (fmdv) were sequenced and compared with some chinese sequences and reference sequences ... | 2007 | 17557134 |
| alpha interferon is a powerful adjuvant for a recombinant protein vaccine against foot-and-mouth disease virus in swine, and an effective stimulus of in vivo immune response. | the adjuvant effect of porcine interferon-alpha (poifn-alpha) was examined in swine vaccinated with a recombinant fmd protein vaccine named igg-fmdv, which contains the swine igg single heavy chain constant region and an immunogenic peptide of serotype o fmdv. the poifn-alpha gene was cloned into pcdna3 vector and the recombinant plasmid was incorporated into cationic liposomes by a dehydration and rehydration procedure to use as an adjuvant, injected together with low-dose igg-fmdv. this proced ... | 2007 | 17555848 |
| heterologous expression of fmdv immunodominant epitopes and hsp70 in p. pastoris and the subsequent immune response in mice. | mycobacterium tuberculosis heat shock protein70 (hsp70) is a major antigen with both chaperone and cytokine functions. it has been used as an adjuvant to induce or potentiate humoral and cellular immunity, both in the form of a mixture with peptide antigens, and as a fusion protein. we have evaluated the effects of hsp70 on foot and mouth virus (fmdv) subunit vaccines. fmdv vp1, and a synthetic multi-epitope fmdv (eg), and vp1-hsp70 and eg-hsp70 fusion proteins were all heterologously expressed ... | 2007 | 17548173 |
| enhanced protective efficacy and reduced viral load of foot-and-mouth disease dna vaccine with co-stimulatory molecules as the molecular adjuvants. | to improve efficacy of dna vaccination, various approaches have been developed, including the use of plasmid expressing co-stimulatory molecules as molecular adjuvants. in this study, we investigated whether co-inoculation of a construct expressing either 4-1bbl or ox40l as the molecular adjuvant with fmdv dna vaccine, pcd-vp1, can increase immune responses and protective efficacies. compared to the group immunized with pcd-vp1 alone, the co-inoculation of either molecular adjuvant induced a hig ... | 2007 | 17540462 |
| identification of a novel foot-and-mouth disease virus specific t-cell epitope with immunodominant characteristics in cattle with mhc serotype a31. | to identify foot-and-mouth disease virus (fmdv) specific t-cell epitopes within the entire polyprotein sequence of the virus, 442 overlapping pentadecapeptides were tested in proliferation assays using lymphocytes from cattle experimentally infected with fmdv. four months post-infection cells from all investigated animals (n = 4) responded by proliferation and interferon-gamma production to a peptide located on the structural protein 1d (vp1), amino acid residues 66-80. major histocompatibility ... | 2007 | 17540158 |
| guinea pig-adapted foot-and-mouth disease virus with altered receptor recognition can productively infect a natural host. | we report that adaptation to infect the guinea pig did not modify the capacity of foot-and-mouth disease virus (fmdv) to kill suckling mice and to cause an acute and transmissible disease in the pig, an important natural host for this pathogen. adaptive amino acid replacements (i(248)-->t in 2c, q(44)-->r in 3a, and l(147)-->p in vp1), selected upon serial passages of a type c fmdv isolated from swine (biological clone c-s8c1) in the guinea pig, were maintained after virus multiplication in swin ... | 2007 | 17522230 |
| sequential structures provide insights into the fidelity of rna replication. | rna virus replication is an error-prone event caused by the low fidelity of viral rna-dependent rna polymerases. replication fidelity can be decreased further by the use of mutagenic ribonucleoside analogs to a point where viral genetic information can no longer be maintained. for foot-and-mouth disease virus, the antiviral analogs ribavirin and 5-fluorouracil have been shown to be mutagenic, contributing to virus extinction through lethal mutagenesis. here, we report the x-ray structure of four ... | 2007 | 17517631 |
| molecular typing of a new foot-and-mouth disease virus in egypt. | 2007 | 17513836 | |
| structural analysis of foot-and-mouth disease virus 3c protease: a viable target for antiviral drugs? | foot-and-mouth disease virus causes a major global agricultural problem that is difficult to control with existing vaccines. structural analyses of the viral 3c protease not only have provided fresh insights into the catalytic mechanism of an unusual class of chymotrypsin-like cysteine proteases, but also are generating valuable information to drive the quest for effective antiviral therapies. | 2007 | 17511659 |
| improvement of a commercial foot-and-mouth disease vaccine by supplement of quil a. | in model animal experiment a, icr mice were immunized with ovalbumin (ova) adjuvanted with quil a or mineral oil or their combination (quil a+oil). in model animal experiment b, icr mice were immunized with foot-and-mouth disease virus (fmdv) antigens or with a commercially available oil adjuvanted foot-and-mouth disease (fmd) vaccine (type o) alone or mixed with quil a. after that, serum samples were collected to analyze specific igg and igg subclasses igg1, igg2a, igg2b, and igg3. in experimen ... | 2007 | 17509735 |
| chimeric tymovirus-like particles displaying foot-and-mouth disease virus non-structural protein epitopes and its use for detection of fmdv-nsp antibodies. | expression of physalis mottle tymovirus (phmv) coat protein (cp) in escherichia coli (e. coli) was earlier shown to self-assemble into empty capsids that are nearly identical to the capsids formed in vivo. aminoacid substitutions were made at the n-terminus of wild-type phmv cp with single or tandem repeats of infection related b-cell epitopes of foot-and-mouth disease virus (fmdv) non-structural proteins (nsps) 3b1, 3b2, 3ab, 3d and 3abd of lengths 48, 66, 49, 51 and 55, respectively to produce ... | 2007 | 17499404 |
| immunization of dna vaccine encoding c3d-vp1 fusion enhanced protective immune response against foot-and-mouth disease virus. | because foot-and-mouth disease virus (fmdv) remains a great problem to many livestock of agricultural importance, safe, effective vaccines are in great need. dna vaccine would be a promising candidate but the design remains to be optimized. vp1 gene of fmdv strain o/es/2001 was linked to three copies of either porcine or murine c3d or four copies of a 28-aa fragment of murine c3d containing the cr2 receptor binding domain (m28). the resultant plasmids encoding c3d/m28-vp1 fusion or only vp1 as c ... | 2007 | 17497212 |
| evaluation of laboratory tests for sat serotypes of foot-and-mouth disease virus with specimens collected from convalescent cattle in zimbabwe. | during a field study in zimbabwe, clinical specimens were collected from 403 cattle in six herds, in which the history of foot-and-mouth disease (fmd) vaccination and infection appeared to be known with some certainty. five herds had reported outbreaks of disease one to five months previously but clinical fmd had not been observed in the sixth herd. a trivalent vaccine (south african territories [sat] types 1, 2 and 3) had been used in some of the herds at various times either before and/or afte ... | 2007 | 17496271 |
| insights into rna virus mutant spectrum and lethal mutagenesis events: replicative interference and complementation by multiple point mutants. | rna virus behavior can be influenced by interactions among viral genomes and their expression products within the mutant spectra of replicating viral quasispecies. here, we report the extent of interference of specific capsid and polymerase mutants of foot-and-mouth disease virus (fmdv) on replication of wild-type (wt) rna. the capsid and polymerase mutants chosen for this analysis had been characterized biochemically and structurally. upon co-electroporation of bhk-21 cells with wt rna and a te ... | 2007 | 17481660 |
| molecular epidemiology of foot-and-mouth disease virus types a and o isolated in argentina during the 2000-2002 epizootic. | during 2000-2002 a foot-and-mouth disease (fmd) epizootic affected argentina and spread across the country resulting in more than 2500 outbreaks. in order to study the evolution of the fmd viruses (fmdv) and help with disease control measures, a genetic characterization and phylogenetic analysis was performed of 43 field isolates representative of the epizootic. the nucleotide sequence of the vp1-coding region was determined for the viruses and used in this study. two serotype a lineages, a/arg/ ... | 2007 | 17475419 |
| enhanced antiviral activity against foot-and-mouth disease virus by a combination of type i and ii porcine interferons. | previously, we showed that type i interferon (alpha/beta interferon [ifn-alpha/beta]) can inhibit foot-and-mouth disease virus (fmdv) replication in cell culture, and swine inoculated with 10(9) pfu of human adenovirus type 5 expressing porcine ifn-alpha (ad5-pifn-alpha) were protected when challenged 1 day later. in this study, we found that type ii pifn (pifn-gamma) also has antiviral activity against fmdv in cell culture and that, in combination with pifn-alpha, it has a synergistic antiviral ... | 2007 | 17459931 |
| performance of a foot-and-mouth disease virus reverse transcription-polymerase chain reaction with amplification controls between three real-time instruments. | the foot-and-mouth disease virus (fmdv) is a member of the picornavirus family, possessing an 8-kb single-stranded rna genome of positive polarity. it is highly contagious among several livestock species and can lead to severe economic consequences, as evidenced by the uk outbreak in 2001. the usage of real-time polymerase chain reaction has facilitated rapid detection of fmdv. several real-time pcr instruments are available with various capabilities, such as portability and high sample volume a ... | 2007 | 17459827 |
| foot-and-mouth disease virus crosses the placenta and causes death in fetal lambs. | eighteen pregnant sheep, six at 45 days gestation and twelve at 75 days gestation, were infected with foot-and-mouth disease virus (fmdv) type o ukg 34/2001. two sheep from each gestational group were killed at 2, 4, and 7 days post-inoculation (dpi). three sheep, pregnant for 75 days at infection, were killed at 17 and 18 dpi. real-time reverse-transcriptase polymerase chain reaction (rt-pcr) and virus isolation (vi) were used to detect viral rna and infectious virus, respectively, in fetal tis ... | 2007 | 17459409 |
| microarray-based molecular detection of foot-and-mouth disease, vesicular stomatitis and swine vesicular disease viruses, using padlock probes. | the world organization for animal health (office international des epizooties, oie) includes the diseases caused by foot-and-mouth disease virus (fmdv), swine vesicular disease virus (svdv), and vesicular stomatitis virus (vsv), as "diseases notifiable to the oie". foot-and-mouth disease (fmd) outbreaks have severe economical as well as social effects and cannot be differentiated from the diseases caused by the other two viruses on the basis of clinical symptoms. efficient laboratory techniques ... | 2007 | 17451815 |
| characterization of a cyanobacterial rnase p ribozyme recognition motif in the ires of foot-and-mouth disease virus reveals a unique structural element. | translation initiation driven by internal ribosome entry site (ires) elements is dependent on the structural organization of the ires region. picornavirus ires are organized in structural domains, in which the terminal stem-loops participate in functional rna-protein interactions. however, the mechanistic role performed by the central domain during internal initiation has not been elucidated yet. here we show that the foot-and-mouth-disease virus ires contains a structural motif that serves in v ... | 2007 | 17449727 |
| immune responses of pigs to commercialized emulsion fmd vaccines and live virus challenge. | the immune response to structural and non-structural proteins (nsps) was studied on sequential serum samples in swine from o/taiwan/97 fmdv challenge studies, outbreaks and after vaccination. the results showed that pigs vaccinated with a commercial vaccine prior to or after infection maintained high neutralizing antibody titers with gradual decline from peak titers over the duration of this study. however, neutralizing antibody titers in non-vaccinated pigs only reached moderate levels 2-4 week ... | 2007 | 17445957 |
| foot-and-mouth disease virus infection induces proteolytic cleavage of ptb, eif3a,b, and pabp rna-binding proteins. | foot-and-mouth disease virus (fmdv) infection induces major changes in the host cell including the shutoff of cellular protein synthesis. here, protein extracts from fmdv-infected cells have been used to monitor changes in the profile of rna-binding factors interacting with regulatory regions of the viral rna. relevant differences have been detected in the pattern of interaction with proteins prepared from either infected or uninfected cells with rna probes encompassing the internal ribosome ent ... | 2007 | 17445855 |
| [construction of recombinant retroviral vector carrying porcine interferon-gamma and its expression in porcine kidney cells (pk-15)]. | porcine interferon-gamma (poifn-gamma) of chinese local brand, meishan porcine, was cloned and inserted into retroviral vector plxsn (neo r) . using lipofectamine, this recombinant plasmid was transfected into retroviral packing cell line, pa317 cells. these transfected cells were selected by dmem containing 400microg/ml g418 for one week. rna was extracted from the supernatant of these selected pa317 cells and the poifn-gamma gene could be amplified by rt-pcr. pocine kidney cells and pk-15 cell ... | 2007 | 17436641 |
| molecular basis for a lack of correlation between viral fitness and cell killing capacity. | the relationship between parasite fitness and virulence has been the object of experimental and theoretical studies often with conflicting conclusions. here, we provide direct experimental evidence that viral fitness and virulence, both measured in the same biological environment provided by host cells in culture, can be two unrelated traits. a biological clone of foot-and-mouth disease virus acquired high fitness and virulence (cell killing capacity) upon large population passages in cell cultu ... | 2007 | 17432933 |
| pocket factors are unlikely to play a major role in the life cycle of human rhinovirus. | human rhinovirus 14 (hrv14) is a member of the rhinovirus genus, which belongs to the picornavirus family, which includes clinically and economically important members, such as poliovirus, foot-and-mouth disease virus, and endomyocarditis virus. capsid stability plays an important role in the viral infection process, in that it needs to be stable enough to move from cell to cell and yet be able to release its genetic material upon the appropriate environmental cues from the host cell. it has bee ... | 2007 | 17428846 |
| induction of immature dendritic cell apoptosis by foot and mouth disease virus is an integrin receptor mediated event before viral infection. | foot and mouth disease virus (fmdv) has been demonstrated to infect dendritic cells (dc) and reduced its ability to stimulate host immune responses. this study aimed to determine whether non-replicating fmdv could induce apoptosis of the host immune cells. in this study, we have demonstrated that bone morrow derived dendritic cells (bmdcs) were induced to undergo apoptosis in a dose-dependent manner, which was determined by the annexin-v staining, dna fragmentation, and tunel staining methods, a ... | 2007 | 17427949 |
| proceedings - embryo transfer in the canadian cattle industry status of disease transmission studies and thier relationship to the international movement of bovine embryos. | the current, generally accepted approach to formulating health requirements for the international movement of embryos is to base them on the health status of the male and female donor animals. the alternative approach of basing them on the health status of the embryos themselves has been blocked by the lack of scientific information about the potential of the early embryo to transmit agents of infectious disease. consequently, most research into infectious disease transmission by embryos has had ... | 1986 | 17422615 |
| combined dna vaccination against three animal viruses elicits decreased immunogenicity of a single plasmid in mice. | in order to investigate whether combined dna vaccines are an ideal way to combine antigens in a single vaccine formulation, we immunized mice with three plasmids (pvsg, pvgd and pve2), respectively, encoding the antigen of foot-and-mouth disease virus (fmdv), pseudorabies virus (prv) and classic swine fever virus (csfv), either alone or in a combined vaccine regimen. we also investigated the immune responses induced by a series of mixtures in which three plasmids were mixed in pairs. then we fur ... | 2007 | 17420075 |
| toward a multiplexed serotyping immunoassay for foot-and-mouth disease virus. | initial results demonstrating the feasibility of a multiplexed liquid array immunoassay for foot-and-mouth disease viral antigen detection and simultaneous serotype differentiation are presented. serotype-specific antibodies from rabbit and guinea pig hyperimmunesera were isolated and prepared for use in a multiplexed, bead-based assay. the performance of all of the available antibodies as both capture and detector reagents was evaluated in the multiplexed system to establish a combination exhib ... | 2007 | 17402613 |
| genotype differentiating rt-pcr and sandwich elisa: handy tools in epidemiological investigation of foot and mouth disease. | years of molecular epidemiological surveillance has revealed co-circulation of two antigenically divergent genotypes of foot and mouth disease virus serotype a in india. genotype differentiating rt-pcr and sandwich elisa were developed as fast, cost-effective and user-friendly alternatives to 1d region based phylogeny for detection and differentiation of genotype vi and vii. the rt-pcr assay targeting 1d region was found to be more sensitive and authentic in distinguishing genotypes than sandwic ... | 2007 | 17400298 |
| implementation of a one-step real-time rt-pcr protocol for diagnosis of foot-and-mouth disease. | an automated one-step real-time reverse transcription polymerase chain reaction (rrt-pcr) protocol was optimised and evaluated for the routine diagnosis of foot-and-mouth disease (fmd). parallel testing of rna samples (n=257) indicated that this assay has a diagnostic sensitivity at least equivalent to the automated two-step rrt-pcr protocol previously used for the laboratory detection of fmd virus (fmdv). this more rapid and economical one-step protocol will play a key role in contingency plann ... | 2007 | 17397937 |
| efficient multicistronic expression of a transgene in human embryonic stem cells. | the applicability of human embryonic stem cells (hescs) will be greatly enhanced by techniques that permit efficient genetic modification with multiple transgenes. we report here on single-promoter-driven foot-and-mouth disease virus segment 2a-mediated multicistronic expression of a transgene in hescs. efficient multicistronic expression of the transgene was permitted by 2a-mediated separation with almost the same amounts of encoded proteins in hesc. in addition, the multicistronic protein expr ... | 2007 | 17395772 |
| seroprevalence of selected viral and bacterial pathogens in free-ranging european bison from the białowieza primeval forest (poland). | blood was collected from bison that were selected between 1991 and 2001 for poor body condition, cachexia, lameness and balanoposthitis. sera were tested for antibodies to bovine herpes virus type 1 (bhv-1), bovine viral diarrhoea virus (bvdv), foot-and-mouth disease virus (fmdv), parainfluenza virus type 3 (pi-3), brucella abortus, chlamydophila abortus, coxiella burnetti, and leptospira interrogans. the results of serological tests showed a prevalence of low titers of a serological reaction to ... | 2007 | 17388020 |
| characterization of recombinant foot-and-mouth disease virus pentamer-like structures expressed by baculovirus and their use as diagnostic antigens in a blocking elisa. | non-infectious recombinant pentamer-like structures of the foot-and-mouth disease virus (fmdv) were expressed by baculovirus, and the antigenicity and immunogenicity of the proteins were analyzed in a blocking elisa for the detection of fmdv antibodies. the recombinant pentamer-like structures were produced in insect (sf9) cells that were inoculated with recombinant baculoviruses that expressed, simultaneously, the genes for the p1 and 3c proteins of fmdv from individual promoters. the fmdv pent ... | 2007 | 17386963 |
| enhanced immunogenicity of modified hepatitis b virus core particle fused with multiepitopes of foot-and-mouth disease virus. | hepatitis b virus core (hbc) particles, self-assemble into capsid particles and are extremely immunogenic, hold promise as an immune-enhancing vaccine carrier for heterologous antigens. however, formation of virus-like particles (vlp) can be restricted by size and structure of heterlogous antigens. in the study, we investigated formation of vlp by modified hbc fused with specified foot-and-mouth disease virus (fmdv) multiepitopes and evaluated their immune effects. firstly, three hbc display vec ... | 2007 | 17386022 |
| molecular relationships between type asia 1 new strain from china and type o panasia strains of foot-and-mouth-disease virus. | the complete genome of asia 1/hnk/cha/05 strain of foot-and-mouth disease virus (fmdv) was sequenced, which was isolated from chinese hongkong in 2005. it is 8187 nt long in size and contains 5'-utr, polyprotein region, and 3'-utr. polyprotein region can be divided into four parts of l, p1, p2 and p3. in this report, these six parts of the whole genome of the strain were compared with 12 reference strains using dnastar and simplot softwares. the comparison of p1 confirmed that asia 1/hnk/cha/05 ... | 2007 | 17380372 |
| a quantitative assessment of the risks from illegally imported meat contaminated with foot and mouth disease virus to great britain. | foot and mouth disease (fmd) is considered by many as the most important animal disease in the world. fmd is highly contagious and outbreaks incur significant costs as affected countries are severely limited in their ability to trade. a number of trade commodities may be contaminated with fmd virus (fmdv) including animal products, for example, meat. as a member of the european union, great britain (gb) has put in place a number of regulations to prevent the importation of pathogens in imported ... | 2007 | 17362409 |
| [retrospective study of foot and mouth disease in west africa from 1970 to 2003]. | a retrospective study of foot and mouth disease in seven west african countries was conducted for the period 1970 to 2003. the study included three cattle-exporting sahel countries (burkina-faso, mali and niger) and four cattle-importing coastal countries (benin, côte d'lvoire, ghana and togo). foot and mouth disease has been enzootic in these countries since 1990/1991. four of the seven serotypes are regularly notified (o, a, sat 1 and sat 2). in the seven countries as a whole, 198 biological s ... | 2006 | 17361767 |
| development of an epitope-blocking-enzyme-linked immunosorbent assay to differentiate between animals infected with and vaccinated against foot-and-mouth disease virus. | an epitope-blocking elisa (eb-elisa) was developed to distinguish animals infected with foot-and-mouth-disease (fmdv) from those immunized with commercial vaccines. the assay used monoclonal antibodies to target the 3b core repeat motif (qkplk) and purified recombinant 3ab proteins from the major b cell line epitopes of fmdv. sera from uninfected and regularly vaccinated cattle, pigs, goats, and sheep (raised in fmdv free areas) were screened to evaluate the specificity of the eb-elisa. the spec ... | 2007 | 17336400 |
| production and application of recombinant antibodies to foot-and-mouth disease virus non-structural protein 3abc. | the stamping out of animals to control a foot-and-mouth disease (fmd) outbreak results in enormous livestock losses. the implementation of vaccination strategies can reduce these losses; however it complicates the process of establishing freedom from disease following an outbreak. the availability of quality diagnostic tests to differentiate infected from vaccinated animals (diva) is crucial to prove freedom from disease and allow for the resumption of trade in livestock products. all current fo ... | 2007 | 17328909 |
| thermostable variants are not generally represented in foot-and-mouth disease virus quasispecies. | a severe limitation to fully realize the dramatic potential for adaptation of rna virus quasispecies may occur if mutations in vast regions of the sequence space of virus genomes lead to significant decreases in biological fitness. in this study the detection and selection by heat of thermostable variants from different foot-and-mouth disease virus (fmdv) populations were attempted, in order to explore whether fmdv may generally accept a substantial increase in thermostability without compromisi ... | 2007 | 17325358 |
| identification of a major antibody binding epitope in the non-structural protein 3d of foot-and-mouth disease virus in cattle and the development of a monoclonal antibody with diagnostic applications. | detection of fmdv non-structural protein 3d antibodies has been used as a complementary method for sero-epidemiological studies as an indirect indicator of fmdv infection. in order to develop a sensitive celisa to detect fmdv antibodies, immune dominant epitopes in fmdv-3d protein were identified by peptide array analysis. monoclonal antibodies were then raised to a selected epitope and used in celisa. ninety two peptides corresponding to the complete amino acid sequence of fmdv-3d were synthesi ... | 2007 | 17320098 |
| the potential role of wild and feral animals as reservoirs of foot-and-mouth disease. | we investigated the potential role of feral pigs and wild deer as fmd reservoirs with a susceptible-latent-infected-recovered geographic-automata model, using spatially referenced data from southern texas, usa. an uncontrolled fmd outbreak initiated in feral pigs and in wild deer might infect up to 698 (90% prediction interval 181, 1387) and 1557 (823, 2118) cattle and affect an area of 166 km(2) (53, 306) and 455 km(2) (301, 588), respectively. the predicted spread of fmd virus infection was in ... | 2007 | 17316848 |
| characterisation of foot-and-mouth disease virus strains circulating in turkey during 1996-2004. | two genotypes of foot-and-mouth disease virus serotype a were identified as the cause of disease outbreaks in turkey during 1996-2004, while serotype o strains, identified during the same period, seem to represent an evolutionary continuum, and asia1 strains were only rarely identified. the data presented are concordant with the conclusion that serotype a strains are repeatedly introduced to turkey from the east and circulate only transiently in farming communities, while type o strains persist ... | 2007 | 17294092 |
| temporal and spatial distributions of foot-and-mouth disease under three different strategies of control and eradication in colombia (1982-2003). | outbreaks of foot-and-mouth disease (fmd) from january 1982 through december 2003 were used to examine variations in serotype- and species-specific risk for three control programmes in colombia: (1982-1983) vaccination, using an aluminium hydroxide, saponin adjuvant, required but not enforced; (1984-1996) vaccination, using an oil double-emulsion adjuvant, required but not enforced; and (1997-2003) enforced vaccination, using an oil double-emulsion adjuvant, restricted animal movement enforced, ... | 2007 | 17285248 |
| non-toxic pseudomonas aeruginosa exotoxin a expressing the fmdv vp1 g-h loop for mucosal vaccination of swine against foot and mouth disease virus. | synthetic peptides derived from the g-h loop of the foot and mouth disease virus (fmdv) capsid protein vp1 are relatively poor at recapitulating the native conformation present in the virus, and thus are often poor immunogens. we hypothesized that a candidate mucosal vaccine against fmdv could be developed using the non-toxic pseudomonas aeruginosa exotoxin a (ntpe) to deliver the g-h loop in its native conformation. an added benefit of this approach is the potential for ntpe to serve as an effe ... | 2007 | 17276557 |
| serological survey for potential disease agents of free-ranging cervids in six selected national parks from germany. | a total of 164 blood samples, collected from free-ranging red deer (cervus elaphus), roe deer (capreolus capreolus) and fallow deer (dama dama) in six german national parks (np) between 2000 and 2002, were assayed for antibodies against nine viral disease agents. antibodies were only detected against the alpha-herpesviruses; specifically, bovine herpesvirus-1 (bhv-1) (22 of 157, 14%), cervid herpesvirus-1 (17 of 157, 10.8%), and caprine herpesvirus-1 (11 of 159, 6.9%). titers ranged from 4 to 10 ... | 2006 | 17255452 |
| quantification of foot and mouth disease virus excretion and transmission within groups of lambs with and without vaccination. | sheep are well known to be susceptible for foot and mouth disease virus (fmdv), but it is unknown whether the infection can spread and persist in a sheep population. we therefore quantified virus transmission by performing experiments with fmd virus strain o/net/2001 in groups of lambs. we used six groups of four lambs each, in which half of each group was inoculated and the other half was contact-exposed. to quantify the effectiveness of a single vaccination we also included six groups of four ... | 2007 | 17254674 |
| mosaic structure of foot-and-mouth disease virus genomes. | the results of a simple pairwise-scanning analysis designed to identify inter-serotype recombination fragments, applied to genome data from 156 isolates of foot-and-mouth disease virus (fmdv) representing all seven serotypes, are reported. large numbers of candidate recombinant fragments were identified from all parts of the fmdv genome, with the exception of the capsid genes, within which such fragments are infrequent. as expected, intertypic fragment exchange is most common between geographica ... | 2007 | 17251567 |
| structure-function analysis of arg-gly-asp helix motifs in alpha v beta 6 integrin ligands. | data relating to the structural basis of ligand recognition by integrins are limited. here we describe the physical requirements for high affinity binding of ligands to alpha v beta6. by combining a series of structural analyses with functional testing, we show that 20-mer peptide ligands, derived from high affinity ligands of alpha v beta6 (foot-and-mouth-disease virus, latency associated peptide), have a common structure comprising an arg-gly-asp motif at the tip of a hairpin turn followed imm ... | 2007 | 17244604 |
| consistent change in the b-c loop of vp2 observed in foot-and-mouth disease virus from persistently infected cattle: implications for association with persistence. | the mechanisms of foot-and-mouth disease virus (fmdv) persistence are poorly understood. it is thought the existence of viral quasispecies that encompass sub-populations with varying survival competencies and antigenicities may play some role in the maintenance of virus in persistently infected animals. by analyzing nucleotide sequences encoding the viral vp2 protein in oesophageal-pharyngeal fluid (probang) samples from cattle at different stages of infection, the significance of any amino acid ... | 2007 | 17241682 |
| european pharmacopoeia foot-and-mouth disease vaccine potency testing in cattle: between test variability and its consequences. | in the event of a foot-and-mouth (fmd) outbreak in a densely populated livestock area within the european community, emergency vaccination will most likely be employed. the objective of the present study was to support the european fmd control policy by evaluating the between test variability of the european accepted method for assessing the potency, a major determinant in vaccine choice, of an fmd vaccine batch. the test system suffers from low in vivo repeatability and reproducibility (67.6 an ... | 2007 | 17227691 |
| identification of neutralizing linear epitopes from the vp1 capsid protein of enterovirus 71 using synthetic peptides. | enterovirus 71 (ev71) is the main causative agent of hand, foot and mouth disease (hfmd) and has been associated with severe neurological diseases resulting in high mortalities. currently, there is no vaccine available and treatment is limited to palliative care. in this study, antisera were raised in mice against 95 overlapping synthetic peptides spanning the vp1 capsid protein of ev71. two peptides, sp55 and sp70, containing amino acid 163-177 and 208-222 of vp1, respectively, are capable of e ... | 2007 | 17222936 |
| stable expression of foot-and-mouth disease virus protein vp1 fused with cholera toxin b subunit in the potato (solanum tuberosum). | the expression vector, pbi121ctbvp1, containing the fusion of the foot and mouth disease virus (fmdv) vp1 gene and the cholera toxin b subunit (ctb) gene was constructed by fused pcr and transferred into potato (solanum tuberosum l.) by agrobacterium-mediated transformation. transformed plants were obtained by selecting on kanamycin-resistant medium strictly and regenerated. the transgenic plantlets were identified by pcr, southern-blot and the production of fused protein was confirmed and quant ... | 2007 | 17208421 |
| removal of foot-and-mouth disease virus infectivity in salted natural casings by minor adaptation of standardized industrial procedures. | intestines are used for the production of natural casings as edible sausage containers. derived from animals (pigs and sheep) experimentally infected with fmdv (initial dosage 10(7.3) pfu/ml, strain o(1kaufbeuren)), these natural casings were treated with sodium chloride or a phosphate salts/sodium chloride mixture and the residual fmdv titres measured. after storage at about 20 degrees c, no remaining infectivity was found after either treatment, whereas casings stored at 4 degrees c still cont ... | 2007 | 17196281 |
| characterisation of a sat-1 outbreak of foot-and-mouth disease in captive african buffalo (syncerus caffer): clinical symptoms, genetic characterisation and phylogenetic comparison of outbreak isolates. | african buffalo (syncerus caffer) play an important role in the maintenance of the sat types of foot-and-mouth disease (fmd) in southern africa. these long-term carriers mostly become sub-clinically infected, maintaining the disease and posing a threat to other susceptible wildlife and domestic species. during an unrelated bovine tuberculosis experiment using captive buffalo in the kruger national park (knp), an outbreak of sat-1 occurred and was further investigated. the clinical signs were rec ... | 2007 | 17194552 |
| comparison of sat-1 foot-and-mouth disease virus isolates obtained from east africa between 1971 and 2000 with viruses from the rest of sub-saharan africa. | foot-and-mouth disease serotype sat-1 seems to be endemic in many sub-saharan african countries. phylogenetic analysis using the 1d gene of 51 sat-1 isolates from east, west and southern africa indicated the presence of at least 6 lineages and 11 genotypes with linkages between various geographical regions of the subcontinent. differences were observed between countries in east africa, the main focus of this study, with individual countries suffering outbreaks from isolates belonging to various ... | 2007 | 17187294 |
| comparison of different methods of routine typing of indian isolates of foot-and-mouth disease virus. | 2006 | 17177617 | |
| [protective immune response of guinea pigs against challenge with foot and mouth disease virus by immunization with foliar extracts from transgenic tomato plants expressing the fmdv structural protein vp1]. | the plant constitutive expression vector pbin438/vp1 for vp1 gene of foot-and-mouth disease virus strain o/ china/99 was constructed. mediated with agrobacterium tumefaciens gv3101 harboring pbin438/vp1, vp1 gene was transferred into cotyledons of tomato. after selected by kanamysin, sixty resistant lines were obtained. the integration and transcription of the vp1 gene in transformed plants was detected by pcr and rt-pcr. after being detected by sandwich-elisa assays, about 40% transformed plant ... | 2006 | 17172031 |
| a second rgd motif in the 1d capsid protein of a sat1 type foot-and-mouth disease virus field isolate is not essential for attachment to target cells. | the amino acid sequence motif arg-gly-asp (rgd), located in the surface-exposed betag-betah loop of the 1d protein of different serotypes and subtypes of foot-and-mouth disease virus (fmdv), is highly conserved and participates in binding of fmdv to susceptible cells. previous sequence analyses of the 1d-encoding region of a fmdv serotype sat1 field isolate from namibia (nam/307/98) indicated the presence of a second rgd motif upstream of the conserved betag-betah loop rgd. the role of these rgd ... | 2007 | 17161881 |
| serological and mucosal immune responses after vaccination and infection with fmdv in pigs. | the aim of this study was to determine a possible correlation between humoral immune responses shortly after vaccination and protection against foot-and-mouth disease virus (fmdv) infection and to study the serological and mucosal antibody responses after vaccination and infection. we used three groups of ten pigs, one non-vaccinated group, one group vaccinated with a single dose vaccine and one group vaccinated with a four-fold dose vaccine. at 7 days post vaccination, five pigs per group were ... | 2007 | 17157418 |
| deterministic, compensatory mutational events in the capsid of foot-and-mouth disease virus in response to the introduction of mutations found in viruses from persistent infections. | the evolution of foot-and-mouth disease virus (fmdv) (biological clone c-s8c1) in persistently infected cells led to the emergence of a variant (r100) that displayed increased virulence, reduced stability, and other modified phenotypic traits. some mutations fixed in the r100 genome involved a cluster of highly conserved residues around the capsid pores that participate in interactions with each other and/or between capsid protomers. we have investigated phenotypic and genotypic changes that occ ... | 2007 | 17151123 |
| foot-and-mouth disease virus mutant with decreased sensitivity to ribavirin: implications for error catastrophe. | the nucleoside analogue ribavirin (r) is mutagenic for foot-and-mouth disease virus (fmdv). passage of fmdv in the presence of increasing concentrations of r resulted in the selection of fmdv with the amino acid substitution m296i in the viral polymerase (3d). measurements of progeny production and viral fitness with chimeric viruses in the presence and absence of r documented that the 3d substitution m296i conferred on fmdv a selective replicative advantage in the presence of r but not in the a ... | 2007 | 17151116 |
| the molecular epidemiology of foot-and-mouth disease virus serotypes a and o from 1998 to 2004 in turkey. | foot-and-mouth disease (fmd) causes significant economic losses in turkish livestock. we have analysed the genetic diversity of the 1d sequences, encoding the hypervariable surface protein vp1, of turkish isolates of serotype a and o collected from 1998 to 2004 in order to obtain epidemiological and immunological information. | 2006 | 17144917 |
| modeled detection time for surveillance for foot-and-mouth disease virus in bulk tank milk. | to estimate when foot-and-mouth disease virus (fmdv) would first be detected in bulk tank milk of dairies after exposure to fmdv. | 2006 | 17144803 |
| [vaccination... health by injection?]. | 2006 | 17137226 | |
| passive immunization of guinea pigs with llama single-domain antibody fragments against foot-and-mouth disease. | foot-and-mouth disease (fmd) is a highly contagious disease that occasionally causes outbreaks in europe. there is a need for therapies that provide rapid protection against fmd in outbreak situations. we aim to provide such rapid protection by passive immunization with llama single-domain antibody fragments (vhhs). twenty-four vhhs binding serotype o fmdv in vitro were isolated from immunized llamas by phage display and expressed in bakers yeast for further characterization. they recognized fou ... | 2007 | 17127019 |
| inhibition of the secretory pathway by foot-and-mouth disease virus 2bc protein is reproduced by coexpression of 2b with 2c, and the site of inhibition is determined by the subcellular location of 2c. | infection of cells with picornaviruses can lead to a block in protein secretion. for poliovirus this is achieved by the 3a protein, and the consequent reduction in secretion of proinflammatory cytokines and surface expression of major histocompatibility complex class i proteins may inhibit host immune responses in vivo. foot-and-mouth disease virus (fmdv), another picornavirus, can cause persistent infection of ruminants, suggesting it too may inhibit immune responses. endoplasmic reticulum (er) ... | 2007 | 17121791 |
| development and evaluation of an indirect enzyme-linked immunosorbent assay for detection of foot-and-mouth disease virus nonstructural protein antibody using a chemically synthesized 2b peptide as antigen. | forty peptides were synthesized corresponding to hydrophilic clusters of amino acids within the sequences of foot-and-mouth disease virus (fmdv) nonstructural proteins (nsp). six peptides were studied in more detail and the most promising, a 2b peptide, was evaluated in enzyme-linked immunosorbent assay (elisa) using sera from naive, vaccinated, and vaccinated-and-challenged cattle as well as bovine sera from field outbreaks. the performance of the new nsp peptide elisa was compared to that of 4 ... | 2006 | 17121081 |
| ratiometric fluorescence-imaging assays of plant membrane traffic using polyproteins. | fluorescent protein markers are widely used to report plant membrane traffic; however, effective protocols to quantify fluorescence or marker expression are lacking. here the 20 residue self-cleaving 2a peptide from foot and mouth disease virus was used to construct polyproteins that expressed a trafficked marker in fixed stoichiometry with a reference protein in a different cellular compartment. various pairs of compartments were simultaneously targeted. together with a bespoke image analysis t ... | 2006 | 17118121 |
| genetic variation of foot-and-mouth disease virus isolates recovered from persistently infected water buffalo (bubalus bubalis). | genetic variation of foot-and-mouth disease virus (fmdv) isolates, serotype o, recovered serially over a 1-year period from persistently infected buffalos was assessed. the persistent state was established experimentally with plaque-purified fmdv, strain o(1)campos, in five buffalos (bubalus bubalis). viral isolates collected from esophageal-pharyngeal (ep) fluids for up to 71 weeks after infection were analyzed at different times by nucleotide sequencing and t(1) rnase oligonucleotide fingerpri ... | 2007 | 17113729 |
| comparison of sensitivity and specificity in three commercial foot-and-mouth disease virus non-structural protein elisa kits with swine sera in taiwan. | three commercialized elisa kits for the detection of antibodies to the non-structural proteins (nsps) of fmd virus were compared, using sera from uninfected, vaccinated, challenged and naturally infected pigs. the kinetics of the antibody response to nsps was compared on sequential serum samples in swine from challenge studies and outbreaks. the results showed that elisa a (ubi) and elisa b (cedi) had better sensitivity than that of the 3abc recombinant protein-based elisa c (chekit). the peak f ... | 2007 | 17112687 |
| production and characterization of two serotype independent monoclonal antibodies against foot-and-mouth disease virus. | two foot-and-mouth disease virus (fmdv) monoclonal antibodies (mabs) were produced from mice immunized with either fmdv serotype a, subunit (12s) or fmdv serotype o, whole virus (140s). both mabs (f1412sa and f21140so) recognized all seven serotypes of fmdv in a double antibody sandwich (das) elisa, suggesting that the binding epitopes of the two mabs are conserved between serotypes. these mabs are igg1 isotype and contain kappa light chains. in order to define the mab binding epitopes, the reac ... | 2007 | 17109972 |
| localization of functional polypeptides in bacterial inclusion bodies. | bacterial inclusion bodies, while showing intriguing amyloid-like features, such as a beta-sheet-based intermolecular organization, binding to amyloid-tropic dyes, and origin in a sequence-selective deposition process, hold an important amount of native-like secondary structure and significant amounts of functional polypeptides. the aggregation mechanics supporting the occurrence of both misfolded and properly folded protein is controversial. single polypeptide chains might contain both misfolde ... | 2007 | 17085715 |
| immune enhancing effects of recombinant bovine il-18 on foot-and-mouth disease vaccination in mice model. | foot-and-mouth disease (fmd) is a highly contagious disease in cloven-hoofed animals and can cause a considerable socio-economic loss for affected countries. interleukin-18 (il-18) is a pleiotropic cytokine and plays important role in both the development of a functional immune system as well as the response of the organism to infection. in the present study, bovine il-18 (boil-18), foot-and-mouth disease virus vp1 and vp1/boil-18 fusion genes were cloned and expressed in pichia pastoris (p. pas ... | 2007 | 17084491 |
| reporting of suspect cases of foot-and-mouth-disease during the 2001 epidemic in the uk, and the herd sensitivity and herd specificity of clinical diagnosis. | we described the clinical diagnostic process utilized during the 2001 epidemic of foot-and-mouth-disease in the united kingdom (uk), and considered it as a series of diagnostic tests. premises were classified according to these diagnostic-test results and actual disease status, determined by the reference test, which in this case was one or more internationally accepted laboratory tests. the herd-level sensitivity (hse) and herd-level specificity (hsp) of the clinical diagnostic process were cal ... | 2007 | 17081639 |
| structural and mutagenic analysis of foot-and-mouth disease virus 3c protease reveals the role of the beta-ribbon in proteolysis. | the 3c protease (3c(pro)) from foot-and-mouth disease virus (fmdv), the causative agent of a widespread and economically devastating disease of domestic livestock, is a potential target for antiviral drug design. we have determined the structure of a new crystal form of fmdv 3c(pro), a chymotrypsin-like cysteine protease, which reveals features that are important for catalytic activity. in particular, we show that a surface loop which was disordered in previous structures adopts a beta-ribbon st ... | 2007 | 17065215 |
| development of an inhibition elisa test for the detection of non-capsid polyprotein 3abc in viral suspensions destined for inactivated foot-and-mouth disease vaccines. | the use during the last decade of immuno-enzymatic tests based on the detection of antibodies to the non-capsid proteins (ncps) of foot-and-mouth disease virus (fmdv) to assess viral circulation, irrespective of vaccination, supported the incorporation into the oie code of the 'free from fmdv with vaccination' category and opened the way to a 'vaccination to live' policy. eradication programmes in south america include systematic vaccination accompanied by large serosurveys through ncp antibody ... | 2006 | 17058500 |
| high throughput sequencing and comparative genomics of foot-and-mouth disease virus. | despite a basic understanding of many aspects of fmd biology, much information regarding fmdv virulence, host range, and virus transmission remains poorly understood. here we present how the use of high throughput sequencing for complete genome sequences of foot-and mouth disease virus (fmdv) led to a series of new insights into viral genome sequence conservation and variability, genetic diversity in nature and phylogenetic classification of isolates, including the first complete sequences of th ... | 2006 | 17058478 |
| phylogenetic analysis of foot-and-mouth disease virus type o re-emerging in free areas of south america. | the nucleotide sequences of the complete vp(1)-coding region of foot-and-mouth disease viruses (fmdv), type o, isolated during the recent emergencies of the disease in free areas of south america (mato grosso do sul, brazil, october 2005, and corrientes, argentina, february 2006), were determined. also established were the complete vp(1)-coding sequences of viruses occurring in neighbouring locations between the years 2000 and 2003. a phylogenetic analysis was performed based on comparison with ... | 2007 | 17056146 |
| 2'-c-methylcytidine as a potent and selective inhibitor of the replication of foot-and-mouth disease virus. | we report on the potent and selective in vitro antiviral activity of 2'-c-methylcytidine (2'-c-metcyt) against foot-and-mouth disease virus (fmdv). fmdv belongs to the picornaviridae and has the potential to cause devastating epidemics in livestock. the 50% and 90% effective concentrations (ec50 and ec90) for inhibition of the fmdv-induced cytopathic effect (cpe) formation were 6.4+/-3.8 and 10.8+/-5.4 microm. comparable ec50 values for inhibition of viral rna synthesis were observed. treatment ... | 2007 | 17055073 |
| [fusion expression of o type foot-and-mouth diseases virus vp1 gene and hsp70 gene and induction of immune responses in mice]. | vp1 gene of o type foot-and-mouth diseases virus and m. tuberculosis hsp70 were expressed in methylotrophic yeast pichia pastoris expression system. the results of cellular immune responses and humoral immune response were examined after balb/c mice were immunized with fusion protein expressed in methylotrophic yeast pichia pastoris. the genes was cloned into the vector ppiczalpha-a by routine molecular technique. the plasmid fusion (ppiczalphaa-vp1-hsp70) was created that hsp70 located downstre ... | 2006 | 17037194 |
| immune responses generated by lactobacillus as a carrier in dna immunization against foot-and-mouth disease virus. | to exploit lactobacillus acidophilus as a carrier in dna immunization against foot-and-mouth disease virus (fmdv), a recombinant eukaryotic expression plasmid (prc/cmv2-vp1-rep. 8014) harboring prc/cmv2 vector, the fmdv vp1 gene, and a replication origin from lactobacillus plantarum atcc 8014 strain was constructed. to detect the vp1 protein, prc/cmv2-vp1-rep. 8014 was expressed in pk 15 cells and transfected into a l. acidophilus sw1 strain (l. acidophilus sfmd-1). to evaluate the immunization ... | 2007 | 17028078 |
| selection and characterization of rna aptamers to the rna-dependent rna polymerase from foot-and-mouth disease virus. | foot-and-mouth disease virus causes a highly contagious disease of agricultural livestock and is of enormous economic importance. replication of the rna genome of the virus, via negative strand intermediates, involves an rna-dependent rna polymerase (3dpol). rna aptamers specific to this enzyme have been selected and characterized. some of these molecules inhibit enzymatic activity in vitro, with ic50 values of <20 nm and ki values of 18-75 nm. two of these show similarity, both with each other ... | 2006 | 17018573 |
| effects of picornavirus 3a proteins on protein transport and gbf1-dependent cop-i recruitment. | the 3a protein of the coxsackievirus b3 (cvb3), an enterovirus that belongs to the family of the picornaviruses, inhibits endoplasmic reticulum-to-golgi transport. recently, we elucidated the underlying mechanism by showing that cvb3 3a interferes with adp-ribosylation factor 1 (arf1)-dependent cop-i recruitment to membranes by binding and inhibiting the function of gbf1, a guanine nucleotide exchange factor that is required for the activation of arf1 (e. wessels et al., dev. cell 11:191-201, 20 ... | 2006 | 17005635 |
| [effect of rgd-containing peptides on platelet aggregation]. | the influence of new synthetic peptides argds-nh2 and rgd-dfk (synthesized by the fermentative method) and vpnlrgdlqvla (a fragment of the foot-and-mouth virus's surface peptide) on the adp-induced human platelet aggregation in vitro was studied. all peptides were found to inhibit the human platelet aggregation, but the synthetic peptides (argds-nh2 and rgd-dfk) showed the most pronounced effect. significant decrease in the platelet aggregation was observed at their concentrations within 0.1-10 ... | 2006 | 16995437 |