Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| diagnostic rapid tests for acute hantavirus infections: specific tests for hantaan, dobrava and puumala viruses versus a hantavirus combination test. | hantaviruses infecting humans in eurasia include hantaan, seoul, puumala and the closely related dobrava and saaremaa viruses. these viruses are causative agents of hemorrhagic fever with renal syndrome (hfrs), which is recognized as a severe health care problem in several countries. diagnostics of hantavirus infections relies on serology, performed principally with enzyme immunoassay (eia) or immunofluorescence assay (ifa). we developed four 5-min immunochromatographic igm-antibody tests for di ... | 2003 | 12565162 |
| [expression of amino terminal of nucleoprotein and glycoprotein g2 of hantaan virus in insect cells in the form of fusion protein]. | to express the glycoprotein g2 and amino terminal of nucleoprotein (np) of hantaan virus in bac-to-bac baculovirus expression system in the form of fusion protein. | 2003 | 15155073 |
| the intracellular association of the nucleocapsid protein (np) of hantaan virus (htnv) with small ubiquitin-like modifier-1 (sumo-1) conjugating enzyme 9 (ubc9). | small ubiquitin-like modifier-1 (sumo-1) conjugating enzyme 9 (ubc9) conjugates sumo-1 to target proteins and modulates cellular processes such as signal transduction, transcription regulation, and cell growth regulation. we demonstrated here that the nucleocapsid protein (np) of hantaan virus (htnv) was associated with ubc9 and sumo-1 in vivo. analysis of the interaction between the truncated nps and ubc9 revealed that the amino acid residues at the positions between 101 and 238 in the np were ... | 2003 | 12573574 |
| quality control measures for the serological diagnosis of hantavirus infections. | with society's rapidly increasing mobility, patients infected with severe viral infections can become seriously ill at any place in europe and elsewhere. improving the diagnostics of these infections is the most important step in detecting the pathogens and dealing with them, and for this purpose, quality control measures are essential tools. | 2003 | 14522063 |
| [serum antibody response and hantavirus rna sequencing in patients with hemorrhagic fever renal syndrome in yantai areas]. | to understand antibody responses to and rna sequences of hantavirus in patients with hemorrhagic fever renal syndrome (hfrs) in yantai areas and to demonstrate the type of the prevalent viruses caused hfrs. | 2003 | 12869991 |
| [passage adaptability of candidate strains for hemorrhagic fever with renal syndrome purified vaccine in vero cells and their immunogenicity]. | to adapt the candidate strains of hemorrhagic fever with renal syndrome (hfrs) purified vaccine to vero cells and to study their antigenicity and immunogenicity. | 2003 | 12869992 |
| serological analysis of hemorrhagic fever with renal syndrome (hfrs) patients in far eastern russia and identification of the causative hantavirus genotype. | hemorrhagic fever with renal syndrome (hfrs) is endemic in east asia and europe. the disease is caused by several viruses belonging to the genus hantavirus, including the hantaan virus (htnv), seoul virus (seov), dobrava belgrade virus (dobv), and puumala virus (puuv). recently, htnv-related viruses, amur (amr) and far east (fe) genotypes were identified as causative agents of hfrs in far eastern russia. to investigate the epidemiology of hfrs and virus transmission, we collected sera from 17 ac ... | 2003 | 12898330 |
| inactivated hantaan virus vaccine derived from suspension culture of vero cells. | we have developed a cell culture-derived, inactivated vaccine against hantaan virus for prevention of the hemorrhagic fever with renal syndrome (hfrs). hantaan virus was purified from a microcarrier culture of vero e6 cells by ultrafiltration and density gradient centrifugation. viral infection was inactivated by treatment of the viral stock with formaldehyde. immunogenic properties of the vaccine were characterized in comparison with hantavax, a mouse brain-derived, formalin-inactivated vaccine ... | 2003 | 12706671 |
| hantaviruses: a tale of two hemispheres. | infectious febrile nephropathies, initially described as epidemics during military campaigns in europe and asia at the turn of the 20(th) century, were eventually all unified under the rubric of hemorrhagic fever with renal syndrome (hfrs) and ascribed to infection from rodent-borne hantaviruses. at the end of the century, hantavirus pulmonary syndrome (hps) was described throughout the americas as a consequence of infection with the new world hantaviruses. the epidemiology and clinical manifest ... | 2003 | 12682619 |
| hantavirus-specific cd8(+)-t-cell responses in newborn mice persistently infected with hantaan virus. | the relationship between virus-specific cd8(+)-t-cell responses and viral persistence was studied in mice by using hantaan virus (htnv). we first established a simple method for measuring levels of virus-specific cd8(+) t cells by flow cytometry. next, to produce a mouse model of persistent htnv infection, newborn mice were inoculated subcutaneously within 24 h of birth with 1 or 0.1 50% newborn mouse lethal dose of htnv. all mice that escaped lethal infection were persistently infected with htn ... | 2003 | 12857910 |
| [epidemic nephropathy in spain: first imported case]. | 2003 | 14642234 | |
| mapping of the regions involved in homotypic interactions of tula hantavirus n protein. | hantavirus nucleocapsid (n) protein has been suggested to form homodimers and homotrimers that are further integrated into the nucleocapsid filaments around the viral rna. here we report detailed mapping of the regions involved in the homotypic n protein interactions in tula hantavirus (tulv). peptide scan screening was used to define the interaction regions, and the mammalian two-hybrid assay was used for the functional analysis of n protein mutants. to study linear regions responsible for n pr ... | 2003 | 14512541 |
| [research and control of hantaan virus and hfrs]. | 2003 | 15043085 | |
| identification of dobrava, hantaan, seoul, and puumala viruses by one-step real-time rt-pcr. | we developed four assays for specifically identifying dobrava (dob), hantaan (htn), puumala (puu), and seoul (seo) viruses. the assays are based on the real-time one-step reverse transcriptase polymerase chain reaction (rt-pcr) with the small segment used as the target sequence. the detection limits of dob, htn, puu, and seo assays were 25, 25, 25, and 12.5 plaque-forming units, respectively. the assays were evaluated in blinded experiments, each with 100 samples that contained andes, black cree ... | 2004 | 15664046 |
| the discovery of hantaan virus: comparative biology and serendipity in a world at war. | 2004 | 15478081 | |
| [amplification test-systems in the diagnosis of hemorrhagic fever with renal syndrome and in studies of viral pathogens]. | the "vectohantivirus-ampli" test system based on rtpcr was shown as fitting the detection of virus rna in blood samples of patients with hemorrhagic fever with renal syndrome (hfrs) made at early stages and no later than 7 days from the disease onset. a sequence analysis of viral nucleotide sequences of pcr products produced by the test-system ensured the identification of hantaviruses (pathogens of hfrs). two genetic variants of puumula virus were shown to circulate in the territory of the bash ... | 2004 | 15455692 |
| [prevalence of hemorrhagic fever with renal syndrome virus in domestic pigs: an epidemiological investigation in shandong province]. | to investigate the epidemiological significance of hemorrhagic fever with renal syndrome virus (hfrsv) infection in domestic pigs in shandong province, and study the role of domestic pigs in the prevalence of hfrs. | 2004 | 15567780 |
| bovine aortic endothelial cells are susceptible to hantaan virus infection. | hantavirus serotype hantaan (htn) is one of the causative agents of hemorrhagic fever with renal syndrome (hfrs, lethality up to 10%). the natural host of htn is apodemus agrarius. recent studies have shown that domestic animals like cattle are sporadically seropositive for hantaviruses. in the present study, the susceptibility of bovine aortic endothelial cells (baec) expressing alpha(v)beta(3)-integrin to a htn infection was investigated. viral nucleocapsid protein and genomic rna segments wer ... | 2004 | 15033559 |
| cell fusion activities of hantaan virus envelope glycoproteins. | hantaan virus (htnv)-infected vero e6 cells undergo cell fusion with both infected and uninfected cells under low-ph conditions. flow cytometry and fluorescence microscopy of htnv-infected vero e6 cells showed that envelope glycoproteins (gps) were located both on the cell surface and in the cytoplasm. neutralizing monoclonal antibodies (mabs) against the g1 and g2 envelope gps inhibited cell fusion, whereas nonneutralizing mabs against g1 or g2 and mabs against the nucleocapsid protein (np) did ... | 2004 | 15367644 |
| age-dependent hantavirus-specific cd8(+) t-cell responses in mice infected with hantaan virus. | to investigate age-dependent differences in hantavirus-specific cd8(+) t-cell responses, mice were inoculated with 0.1 50% newborn mouse lethal dose of hantaan virus (htnv) at 0, 3, 7, 14, or 35 days after birth. htnv-specific cd8(+) t cells producing gamma interferon (ifn-gamma) were measured on day 30 after htnv inoculation. although no ifn-gamma-producing htnv-specific cd8(+) t cells were detected in most of the mice inoculated with htnv on day 0 after birth, most mice inoculated at 3, 7, 14, ... | 2004 | 15221537 |
| [the relationship between cellular infection by hantaan virus and expression of beta3 integrin]. | to investigate the relationship between cellular entry of hantaan virus (htnv) and expression of beta3 integrin in beta3-integrin-deficient and htnv-insusceptible china hamster ovary (cho) cells. | 2004 | 15634536 |
| [complex evaluation of endemicity level of the territory affected by hemorrhagic fever with renal syndorome]. | a new formula for the calculation of the endemicity index of the territory affected by hemorrhagic fever with renal syndrome (hfrs) based on empiric data collected in the volga region near saratov in 1982-2000 is proposed. as found in this research 21% of the administrative districts of the region have a high endemicity level (with the average index for several years reaching 35 points), 8% of the districts have a medium enemicity level (20 points) and 71% of the districts--a low endemicity leve ... | 2004 | 15636134 |
| [hemorrhagic fever with renal syndrome: historical aspects]. | a mysterious disease was first reported from korea when it had been observed during late spring 1951 in un forces operating in the central area close to the 38th parallel. the disease showed distinctive features which included high fever, low blood pressure, hemorrhagic tendency and acute renal failure. historically it was apparently a similar disease to a clinical entity designated as epidemic hemorrhagic fever in manchuria or hemorrhagic nephrosonephritis in far eastern russia. after lee ho-wa ... | 2004 | 15309770 |
| [cellular ultrastructural changes of bone marrow of patients with hemorrhagic fever with renal syndrome]. | to observe cytopathogenic effect of hantaan virus (hv) on cultured human bone marrow cells. | 2004 | 15340508 |
| a new model of hantaan virus persistence in mice: the balance between htnv infection and cd8(+) t-cell responses. | we established a viral persistence model that involves the adoptive transfer of spleen cells from immunocompetent mice (h-2(d)) into hantaan virus (htnv)-infected severe combined immunodeficient (scid, h-2(d)) mice. the infection is maintained despite the presence of neutralizing antibodies, without apparent signs of disease, and there is a correlation between htnv persistence and the lack of htnv-specific cd8(+) t cells. in addition, disseminated htnv infection before the initiation of immune r ... | 2004 | 15110529 |
| [using geographic information system to study on the association between epidemic areas and main animal hosts of hemorrhagic fever with renal syndrome in china]. | to analyze the association between types of epidemic areas and proportion of main animal hosts of hemorrhagic fever with renal syndrome (hfrs) in china. | 2004 | 15769318 |
| [epidemiological study of hemorrhagic fever with renal syndrome in 1984-2003 in weifang city, shandong province]. | 2004 | 15769383 | |
| serological characterization of a hantavirus from hubei, china. | hantavirus hv114, isolated from urine of a patient during epidemic of hemorrhagic fever with renal syndrome (hfrs) in china, was subjected to a detailed serological characterization using enzyme-linked immunosorbent assay (elisa), neutralization test and indirect immunofluorescence antibody assay (ifa). it has been found that hv114 is antigenically similar to the hantavirus a9 strain isolated in china and to the hantaan 76-118 virus (htnv 76-118), but different from the hantaviruses isolated fro ... | 2004 | 15230468 |
| differential antiviral response of endothelial cells after infection with pathogenic and nonpathogenic hantaviruses. | hantaviruses represent important human pathogens and can induce hemorrhagic fever with renal syndrome (hfrs), which is characterized by endothelial dysfunction. both pathogenic and nonpathogenic hantaviruses replicate without causing any apparent cytopathic effect, suggesting that immunopathological mechanisms play an important role in pathogenesis. we compared the antiviral responses triggered by hantaan virus (htnv), a pathogenic hantavirus associated with hfrs, and tula virus (tulv), a rather ... | 2004 | 15163707 |
| identification and analysis for cross-reactivity among hantaviruses of h-2b-restricted cytotoxic t-lymphocyte epitopes in sin nombre virus nucleocapsid protein. | sin nombre virus (snv) causes hantavirus pulmonary syndrome (hps), with a high rate of mortality in humans who are infected by the transmission of virus from the natural rodent host. in humans, cytotoxic t lymphocytes (ctl) specific for snv appear to play an important role in the pathogenicity of hps. there is a correlation between the frequencies of snv-specific ctls and the severity of hps disease. in order to create a mouse model to study the role of snv-specific t cells in vivo, t cell respo ... | 2004 | 15218176 |
| modification of endothelial cell functions by hantaan virus infection: prolonged hyper-permeability induced by tnf-alpha of hantaan virus-infected endothelial cell monolayers. | serious vascular leakage is central to the pathogenesis of hantavirus infections. however, there is no evidence suggesting the hantavirus infection of endothelial cells directly causes obvious cell damage or morphological alteration either in vivo or in vitro. in this study, we examined whether hantaan virus (htnv) infection modifies the barrier function of endothelial cell monolayers upon the exposure to pro-inflammatory cytokines. low levels (1 ng/ml) of tumor necrosis factor-alpha initially i ... | 2004 | 15221531 |
| [screening and identification of mimic epitopes of monoclonal antibodies against hantaan virus using phage display technique]. | to obtain mimic epitopes of monoclonal antibody (mab) against hantaan virus, and identify preliminarily their immunological characteristics. | 2004 | 15207087 |
| analysis of n-linked glycosylation of hantaan virus glycoproteins and the role of oligosaccharide side chains in protein folding and intracellular trafficking. | the membrane glycoproteins gn and gc of hantaan virus (htnv) (family bunyaviridae) are modified by n-linked glycosylation. the glycoproteins contain six potential sites for the attachment of n-linked oligosaccharides, five sites on gn and one on gc. the properties of the n-linked oligosaccharide chains were analyzed by treatment with endoglycosidase h, peptide:n-glycosidase f, tunicamycin, and deoxynojirimycin and were confirmed to be completely of the high-mannose type. ten glycoprotein gene mu ... | 2004 | 15113920 |
| prevalence of hantavirus antibody in patients with chronic renal disease in egypt. | in egypt, the etiology of chronic renal failure (crf) is not well defined. a hospital-based case-control study was initiated in february 1998, to determine whether hantavirus infection is involved in chronic renal disease (crd) in egypt. the study enrolled 350 study patients with a history of crf and 695 matched controls with crd due to renal calculus or renal cancer, but with normal renal functions. sera from cases and controls were tested for anti-hantavirus igg using elisa with a cell-lysate ... | 2004 | 15099987 |
| microarray technology for identification and distinction of hantaviruses. | dna microarrays combine high-precision technology with advanced molecular biology to achieve high-throughput screening of dna fragments. in this study, we investigated the potential of the cdna microarray technique to identify and discriminate pcr derived amplicons from genetically highly similar viruses. the wide range of sequence variation among hantaviruses makes them suitable as a model for this purpose. the hantaviruses, carried by rodents, cause several hundred thousand cases of severe hum ... | 2004 | 14981768 |
| [experimental study on enzyme dot assay for detection of hemorrhagic fever with renal syndrome antigen]. | to establish a new and efficient method(ieda) for detection of hemorrhagic fever with renal syndrome virus (hfrsv) antigen. | 2004 | 15340537 |
| isolation of the etiologic agent of korean hemorrhagic fever. 1978. | 2004 | 15517702 | |
| [a study on detecting specific antibodies of hemorrhagic fever with renal syndrome and treatment with integrated traditional chinese and western medicine]. | to explore a simple speedy specific and sensitive method to detect specific igm (sigm) and igg (sigg) antibodies of hemorrhagic fever with renal syndrome (hfrs),and to study the therapeutic effects of integrated traditional chinese and western medicine on hfrs. | 2004 | 15339496 |
| [the epidemic characteristics and preventive measures of hemorrhagic fever with syndromes in china]. | to summarize and analyze the epidemic situation of hantaviruses including geographic distribution, types and prevalent intensity of epidemic areas of hantavirus for the last 30 years in china, and to discuss relative preventive measures. | 2004 | 15231118 |
| [serological surveillance on vaccine against hemorrhagic fever with renal syndrome]. | to observe the serological and epidemiological efficacy of hemorrhagic fever renal syndrome (hfrs) vaccine in zhejiang province. | 2004 | 15231163 |
| interactions and trafficking of andes and sin nombre hantavirus glycoproteins g1 and g2. | this study was designed to investigate the trafficking of andes virus (andv) and sin nombre virus (snv) glycoproteins and to determine if andv or snv glycoproteins g1 and g2 could be substituted for each other while still retaining normal trafficking. trafficking of hantaan virus (hntv) and snv glycoproteins has been studied and conflicting results were published regarding the golgi targeting of g1 and g2 when expressed individually. the results reported in this manuscript suggest that both snv ... | 2005 | 15629773 |
| immunization effect of purified bivalent vaccine to haemorrhagic fever with renal syndrome manufactured from primary cultured hamster kidney cells. | 2005 | 15899141 | |
| [development of purified hfrs bivalent vaccine]. | to develop the purified hfrs bivalent vaccine. | 2005 | 15766416 |
| hanta hemorrhagic fever with renal syndrome: a case report and review. | hantavirus infection is seldom reported in taiwan. the spectrum of clinical severity ranges from mild to severe and may cover hantavirus pulmonary syndrome and hemorrhagic fever with renal syndrome (hfrs). we report a case of hfrs in a 24-year-old soldier presenting with fever, chills, abdominal pain and generalized myalgia. his clinical course progressed through febrile, hypotensive, oliguria and polyuria phases. hantavirus infection was proven by serology at the second hospital week. the patie ... | 2005 | 15986074 |
| [expression and genetic immunization of hantaan virus g2 recombinant adenovirus]. | to express hantaan virus(htnv) envelope glycoprotein g(2) recombinant adenovirus(adeno-g(2)) in vero e6 cells and explore its property of inducing immune response. | 2005 | 15989780 |
| [identification of oligopeptides mimicking the virus attachment protein of hantaan virus]. | to identify and characterize the epitope associated with the virus attachment protein (vap) of hantaan virus. | 2005 | 16201476 |
| [identification of htnv-np-specific t lymphocyte epitopes and analysis of the epitope-specific t cell response]. | to identify the nucleocapsid protein of hantaan virus (htnv-np)-specific t lymphocyte epitopes and analyze the epitope-specific t cell response during hemorrhagic fever with renal syndrome (hfrs). | 2005 | 16256031 |
| [hemorrhagic fever with renal syndrome among servicemen in primorskiĭ region of russia]. | the data about the incidence of hemorrhagic fever with renal syndrome (hfrs) among the servicemen stationed in hfrs endemic territories at primorye region are presented. the authors have shown the epidemiological significance of outbreaks, group and sporadic cases of hfrs especially in servicemen aged 18-20. during the outbreaks the maximal hfrs incidence is registered during 2 weeks after the first case. 104 hfrs cases were registered in the servicemen. among them 77.8 +/- 3.0% were at the age ... | 2005 | 16276769 |
| [changing patterns of communicable diseases in korea]. | before twentieth centuries and during early twentieth centuries, communicable diseases were the major cause of morbidity and mortality in korea. but reliable data are not available. after 1975, the overall morbidity and mortality from communicable diseases, rapidly declined. recently many new pathogenic microbes were recognized: l. monocytogenes, hantaan virus, y. pseudotuberculosis, p. multocida, l. pneumophilia, human immunodeficiency virus (hiv), g. seoi, h. capsulatum, c. burnetii, v. choler ... | 2005 | 16315747 |
| [serological screening in the establishment of the epidemic activity of foci of hemorrhagic fever with renal syndrome]. | 2005 | 16498958 | |
| recombinant tula hantavirus shows reduced fitness but is able to survive in the presence of a parental virus: analysis of consecutive passages in a cell culture. | tula hantavirus carrying recombinant s rna segment (rectulv) grew in a cell culture to the same titers as the original cell adapted variant but presented no real match to the parental virus. our data showed that the lower competitiveness of rectulv could not be increased by pre-passaging in the cell culture. nevertheless, the recombinant virus was able to survive in the presence of the parental virus during five consecutive passages. the observed survival time seems to be sufficient for transmis ... | 2005 | 15725355 |
| nucleocapsid protein of cell culture-adapted seoul virus strain 80-39: analysis of its encoding sequence, expression in yeast and immuno-reactivity. | seoul virus (seov) is a hantavirus causing a mild to moderate form of hemorrhagic fever with renal syndrome that is distributed mainly in asia. the nucleocapsid (n) protein-encoding sequence of seov (strain 80-39) was rt-pcr-amplified and cloned into a yeast expression vector containing a galactose-inducible promoter. a survey of the pattern of synonymous codon preferences for a total of 22 n protein-encoding hantavirus genes including 13 of seov strains revealed that there is minor variation in ... | 2005 | 15744561 |
| pathogenic hantaviruses bind plexin-semaphorin-integrin domains present at the apex of inactive, bent alphavbeta3 integrin conformers. | the alphavbeta3 integrins are linked to human bleeding disorders, and pathogenic hantaviruses regulate the function of alphavbeta3 integrins and cause acute vascular diseases. alphavbeta3 integrins are present in either extended (active) or dramatically bent (inactive) structures, and interconversion of alphavbeta3 conformers dynamically regulates integrin functions. here, we show that hantaviruses bind human alphavbeta3 integrins and that binding maps to the plexin-semaphorin-integrin (psi) dom ... | 2005 | 15657120 |
| [antiviral effectiveness of the combined use of amixine and virasole in experimental hemorrhagic fever with renal syndrome in sucking albino mice]. | the antiviral effectiveness of the combined and single use of superlow-dose amixine and virasole on the course of experimental hemorrhagic fever with renal syndrome was studied in sucking albino mice parenterally infected with their virus hantaan. the co-administration of virasole and amixine was shown to protect 52% of the infected animals from death, which is superior to the effect of their monotherapy. the combined use of the drugs substantially prolongs the survival of albino mice after thei ... | 2005 | 16408628 |
| human and rodent humoral immune responses to andes virus structural proteins. | in the present work we identified b-cell epitopes recognized by sera of humans and rodents naturally infected with andes virus, a hantavirus present in chile and argentina. analysis of patient and rodent sera with overlapping peptides revealed 21 human and rodent epitopes on the three structural proteins. whereas in the nucleoprotein the region comprising aa 248-260 was shown to be the key determinant of human sera, the major antigenic site of rodent antibody reactivity is located at aa 326-338. ... | 2005 | 15780882 |
| in vivo characterization of the integrin beta3 as a receptor for hantaan virus cellular entry. | binding of viruses to cell surface molecules is an essential step in viral infection. in vitro studies suggested that the alpha(v)beta(3) integrin receptor is the epithelial cell receptor for hantaan virus (htnv). whether beta(3) is in vivo the only or central cellular receptor for htnv infection is not known. to investigate the role of beta(3) integrin for cellular entry of htnv, we established an htnv infection model in newborn murine pups. infected pups died at an average age of 14.2 +/- 1.1 ... | 2005 | 15886525 |
| detection of human hantavirus infections in lithuania. | in europe certain hantaviruses are known to cause hemorrhagic fever with renal syndrome of different severity. the objective of the present investigation was to study the presence of hantavirus infections in lithuania. | 2005 | 15827873 |
| hypopituitarism as a late complication of hemorrhagic fever. | we report three patients who developed hypopituitarism as a late complication of hemorrhagic fever with renal syndrome (hfrs). their past history, physical examination, and endocrine investigation confirmed hypopituitarism. magnetic resonance imaging of the pituitary revealed atrophic pituitary gland with an empty sella. hemorrhagic fever is endemic in certain regions of the balkans, and this preliminary report suggests the importance of investigating the endocrine status in every patient who su ... | 2005 | 15888918 |
| long-term sequelae of hemorrhagic fever with renal syndrome attributable to hantaan virus in korean war veterans. | health status was sought for approximately 1600 korean war veterans who contracted hemorrhagic fever with renal syndrome (hfrs) during deployment to korea between 1951 and 1953. to determine whether long-term sequelae were present for these individuals, mortality and morbidity data were collected from the department of veterans affairs, the centers for medicare and medicaid services, the social security administration, and the national death index records. control subjects were selected from mil ... | 2005 | 15916302 |
| peptide antagonists that inhibit sin nombre virus and hantaan virus entry through the beta3-integrin receptor. | specific therapy is not available for the treatment of hantavirus cardiopulmonary syndrome caused by sin nombre virus (snv). the entry of pathogenic hantaviruses into susceptible human cells is dependent upon expression of the alpha(v)beta(3) integrin, and transfection of human beta(3) integrin is sufficient to confer infectibility onto cho (chinese hamster ovary) cells. furthermore, pretreatment of susceptible cells with anti-beta(3) antibodies such as c7e3 or its fab fragment reopro prevents h ... | 2005 | 15919886 |
| inactivation of hantaan virus-containing samples for subsequent investigations outside biosafety level 3 facilities. | the potential risk of accidental infection by hantaviruses in a clinical or research laboratory necessitates special precautionary measures. a biosafety program must address handling and disposal of infectious materials as well as appropriate virus inactivation or depletion procedures to permit necessary further processing of specimens outside the biosafety level 3 laboratory. | 2005 | 15920350 |
| variability of g1 gene of hantaviruses occurring in the hubei province, p.r. china from 1985 to 2000. | we studied variability of g1 gene of hantaviruses occurring in the hubei province, p.r. china. serum samples were collected from 229 patients with hemorrhagic fever with renal syndromes (hfrs) during 1985--1989 and 1996--2000 and were tested by rt-pcr for the presence of hantaan and seoul viruses (htnvs, seovs) and by restriction fragment length polymorphism (rflp) analysis for the respective pattern. out of 229 sera 166 (72.5%) were hantavirus-positive by rt-pcr, including 124 from 1985--1989 a ... | 2005 | 15929399 |
| hantavirus nucleocapsid protein: a multifunctional molecule with both housekeeping and ambassadorial duties. | in recent years important progress has been made studying the nucleocapsid (n) protein of hantaviruses. the n protein presents a good example of a multifunctional viral macromolecule. it is a major structural component of a virion that encapsidates viral rna (vrna). it also interacts with the virus polymerase (l protein) and one of the glycoproteins. on top of these "house keeping" duties, the n protein performs interactive "ambassadorial" functions interfering with important regulatory pathways ... | 2005 | 15931462 |
| essential amino acids of the hantaan virus n protein in its interaction with rna. | the nucleocapsid (n) protein of hantavirus encapsidates viral genomic and antigenomic rnas. previously, deletion mapping identified a central, conserved region (amino acids 175 to 217) within the hantaan virus (htnv) n protein that interacts with a high affinity with these viral rnas (vrnas). to further define the boundaries of the rna binding domain (rbd), several peptides were synthesized and examined for the ability to bind full-length s-segment vrna. peptide 195-217 retained 94% of the vrna ... | 2005 | 16014963 |
| effect of cordycepin on hantaan virus 76-118 infection of primary human embryonic pulmonary fibroblasts--characterization of apoptotic effects. | the cdna microarray technique was used to study gene epression in human embryonic pulmonary fibroblasts (hepf) infected with hantaan virus (htnv) under the influence of cordycepin (cor), an inhibitor of post-transcriptional pre-mrna polyadenylation. four apoptotic genes, the insulin-like growth factor binding protein 1, nfkb inhibitor alpha, caspase-3 and nfkb1 were up-regulated in both infected and uninfected cor-treated cells and two cell cycle-associated genes, cdc-like kinase and beta-induce ... | 2005 | 16178516 |
| hantavirus infection in thailand: first clinical case report. | this study involved 115 cases of fever of unknown origin (fuo) patients who were admitted to the department of medicine, siriraj hospital from may 1999 to november 2000. among the patient sera screened by elisa for igg hantavirus, five were positive for igg hantavirus-reacting antibodies and eight tested positive for igm hantavirus-reacting antibodies. one serum had both igg and igm antibodies. the patient exhibited acute encephalitic febrile illness, thrombocytopenia, high ast and alt levels, a ... | 2005 | 16124441 |
| design and development of a dna array for rapid detection and genotyping of seven kinds of pathogenic microbes. | a dna array for rapid detection and genotyping of the pathogenic microbes of epidemic hemorrhagic fever, tsutsugamushi disease, leptospirosis, malaria, schistosomiasis, cholera, and hemorrhagic colitis was developed. the specific and relatively conserved pcr primers and dna probes were screened from the characteristic genes of the pathogenic microbes. the pcr or rt-pcr methods were established for amplifying and labeling the dna fragments of the pathogenic microbes. all the probes with the same ... | 2005 | 16193981 |
| analysis of immune responses against nucleocapsid protein of the hantaan virus elicited by virus infection or dna vaccination. | even though neutralizing antibodies against the hantaan virus (htnv) has been proven to be critical against viral infections, the cellular immune responses to htnv are also assumed to be important for viral clearance. in this report, we have examined the cellular and humoral immune responses against the htnv nucleocapsid protein (np) elicited by virus infection or dna vaccination. to examine the cellular immune response against htnv np, we used h-2k(b) restricted t-cell epitopes of np. the np-sp ... | 2005 | 16410771 |
| hantavirus infection in thailand: first clinical case report. | this study involved 115 cases of fever of unknown origin (fuo) in patients who were admitted to the department of medicine, siriraj hospital from may 1999 to november 2000. among the patient sera screened by elisa for igg hantavirus, five were positive for igg hantavirus-reacting antibodies and eight tested positive for igm hantavirus-reacting antibodies. one serum had both igg and igm antibodies. the patient exhibited acute encephalitic febrile illness, thrombocytopenia, high ast and alt levels ... | 2005 | 15906672 |
| [the pathogenetic role of peripheral t-lymphocytes activation-induced cell death in hemorrhagic fever with renal syndrome]. | to study the activation-induced cell death (aicd) in peripheral blood t-lymphocytes (pbl-t) from patients of hemorrhagic fever with renal syndrome (hfrs) and the effect of aicd on the pathogenesis of hfrs. | 2006 | 17313872 |
| a pseudotype vesicular stomatitis virus containing hantaan virus envelope glycoproteins g1 and g2 as an alternative to hantavirus vaccine in mice. | we examined whether a vesicular stomatitis virus (vsv) pseudotype bearing the hantavirus envelope glycoproteins (gps) g1 and g2 (vsvdeltag*htn) could be used as a safe and effective alternative to native hantavirus. mice were immunized with purified particles of vsvdeltag*htn. after the second immunization, all mice produced anti-gp antibody as detected in elisa and a neutralization test. after the third immunization, the mice were challenged with hantaan virus. neither anti-np antibody producti ... | 2006 | 16426712 |
| cellular entry of hantaan virus a9 strain: specific interactions with beta3 integrins and a novel 70kda protein. | cellular entry of pathogenic hantaviruses had been shown to be mediated by beta3 integrins. however, no direct evidence exists that hantavirus binds to beta3 integrins, and integrin beta3 subunit is not expressed on some cells permissive to hantavirus infection. in this report, utilizing beta3-integrin-transfected cho cells, we demonstrated that integrin beta3 subunit renders cho cells susceptible to chinese hantaan virus (htn) strain a9 (isolated in china), and the viral infection was correspon ... | 2006 | 16310165 |
| hantaan/andes virus dna vaccine elicits a broadly cross-reactive neutralizing antibody response in nonhuman primates. | at least four hantavirus species cause disease with prominent renal involvement-hemorrhagic fever with renal syndrome (hfrs); and several hantavirus strains cause disease with significant pulmonary involvement-hantavirus pulmonary syndrome (hps). the most prevalent and lethal hantaviruses associated with hfrs and hps are hantaan virus (htnv) and andes virus (andv), respectively. here, we constructed a dna vaccine plasmid (pwrg/ha-m) that contains both the htnv and andv m gene segments. rhesus ma ... | 2006 | 16378630 |
| regions of importance for interaction of puumala virus nucleocapsid subunits. | puumala virus (puuv) is a hantavirus that causes a mild form of hemorrhagic fever with renal syndrome in northern and central europe, and in large parts of russia. the nucleocapsid (n) protein encoded by hantaviruses plays an important role in the life-cycle of these viruses, and one important function for the n-protein is to oligomerize, surround and protect the viral rnas. we have identified amino- and carboxy-terminal regions involved in puuv n-n interactions, which comprise amino acids 100-1 ... | 2006 | 16972031 |
| the pathogenic ny-1 hantavirus g1 cytoplasmic tail inhibits rig-i- and tbk-1-directed interferon responses. | hantaviruses cause two diseases with prominent vascular permeability defects, hemorrhagic fever with renal syndrome and hantavirus pulmonary syndrome. all hantaviruses infect human endothelial cells, although it is unclear what differentiates pathogenic from nonpathogenic hantaviruses. we observed dramatic differences in interferon-specific transcriptional responses between pathogenic and nonpathogenic hantaviruses at 1 day postinfection, suggesting that hantavirus pathogenesis may in part be de ... | 2006 | 16973572 |
| dynamic changes of apoptosis-inducing ligands and th1/th2 like subpopulations in hantaan virus-induced hemorrhagic fever with renal syndrome. | the expression of the apoptosis-inducing ligands, tnf-alpha, fasl and trail on peripheral blood mononuclear cells (pbmc) and the levels of their soluble form (tnf-alpha, sfasl and strail) in plasma from 40 hemorrhagic fever with renal syndrome (hfrs) patients as well as 26 healthy blood donors were determined by flow cytometry (fcm) analysis and sandwich elisa, respectively. the status of th1, th2, tc1 and tc2 subsets in pbmc was evaluated by intracellular cytokine staining and fcm. compared to ... | 2006 | 16616877 |
| epidemiology of hemorrhagic fever with renal syndrome in endemic area of the republic of korea, 1995-1998. | we conducted an epidemiologic study to understand temporal and spatial patterns of hemorrhagic fever with renal syndrome (hfrs) in the republic of korea (rok). we estimated the incidence among civilians in endemic areas through the active surveillance system during the major epidemic periods, from september to december, between 1996 and 1998. we also estimated the prevalence among korean military personnel from 1995 to 1998. in addition, we assessed seroprevalence, subclinical infection rate, an ... | 2006 | 16891802 |
| characterization of truncated hantavirus nucleocapsid proteins and their application for serotyping. | hemorrhagic fever with renal syndrome (hfrs) is a fulminant infectious disease characterized by fever, hemorrhage, renal impairment, and thrombocytopenia. hantaviruses associated with this belong to different serotypes: hantaan (htn), seoul (seo), dobrava/belgrade (dob), and puumala (puu). the first two, htn and seo, are endemic in china. to investigate the epidemiology of hfrs and virus transmission in china, we constructed prokaryotic plasmids encoding truncated recombinant htn and seo nucleoc ... | 2006 | 16721853 |
| truncated recombinant dobrava hantavirus nucleocapsid proteins induce strong, long-lasting immune responses in mice. | we describe the cloning and expression of dobrava hantavirus (dobv) nucleocapsid proteins and a truncated form consisting of the first 118 n-terminal amino acids, and the capacity of these e. coli icone 200-expressed recombinant proteins (rnp) to induce a protective immune response against dobv in mice. as an alternative carrier protein, the outer membrane protein a derived from klebsiella pneumoniae (rp40) has been coupled to different rnp constructs. all recombinant proteins were found to be h ... | 2006 | 16714853 |
| [hemorrhagic fever with the renal syndrome: modern aspects of epidemiology and prophylaxis]. | hemorrhagic fever with the renal syndrome (hfrs) is a typical natural-and-focal virus infection having military-and-epidemiological importance for armed forces of most countries. severe forms of this infection are typical for the far east of russia, countries of south-east asia and especially for the american continent. the lethality from hfrs amounts to 15-50%. the main natural carriers and keepers of hfrs stimulus are various mouse-type rodents. in russia besides well-studied natural focuses o ... | 2006 | 16977883 |
| phage display mediated immuno-pcr. | immuno-pcr (ipcr) is a powerful detection technology in immunological study and clinical diagnosis due to its ultrasensitivity. here we introduce a new strategy termed phage display mediated immuno-pcr (pd-ipcr). instead of utilization of monoclonal antibody (mab) and chemically bond dna that required in the conventional ipcr, a recombinant phage particle is applied as a ready reagent for ipcr experiment. the surface displayed single chain variable fragment (scfv) and phage dna themselves can di ... | 2006 | 16682441 |
| dobrava, but not saaremaa, hantavirus is lethal and induces nitric oxide production in suckling mice. | hantaviruses are the causative agents of hfrs and hcps (hemorrhagic fever with renal syndrome and hantavirus cardiopulmonary syndrome), two severe, and often fatal human diseases. mortality from hfrs varies between hantaviruses; hantaan and dobrava show the highest, seoul intermediate, and puumala low mortality. saaremaa, genetically closely related to dobrava, is also known to induce hfrs, with low or no mortality. in this study, mice were inoculated with dobrava and saaremaa viruses to test fo ... | 2006 | 16513381 |
| immunogenicity of combination dna vaccines for rift valley fever virus, tick-borne encephalitis virus, hantaan virus, and crimean congo hemorrhagic fever virus. | dna vaccines for rift valley fever virus (rvfv), crimean congo hemorrhagic fever virus (cchfv), tick-borne encephalitis virus (tbev), and hantaan virus (htnv), were tested in mice alone or in various combinations. the bunyavirus vaccines (rvfv, cchfv, and htnv) expressed gn and gc genes, and the flavivirus vaccine (tbev) expressed the prem and e genes. all vaccines were delivered by gene gun. the tbev dna vaccine and the rvfv dna vaccine elicited similar levels of antibodies and protected mice f ... | 2006 | 16174542 |
| the expression and genetic immunization of chimeric fragment of hantaan virus m and s segments. | hemorrhagic fever with renal syndrome (hfrs), which is characterized by severe symptoms and high mortality, is caused by hantavirus. there are still no effective prophylactic vaccines directed to hfrs until now. in this research, we fused expressed g2 fragment of m segment and 0.7kb fragment of s segment. we expect it could be a candidate vaccine. chimeric gene g2s0.7 was first expressed in prokaryotic expression system pgex-4t. after inducing expressed fusion proteins, gst-g2s0.7 was induced an ... | 2007 | 17266922 |
| hemorrhagic fever with renal syndrome (hfrs, korean hemorrhagic fever). | 2007 | 16983539 | |
| activity of ribavirin against hantaan virus correlates with production of ribavirin-5'-triphosphate, not with inhibition of imp dehydrogenase. | ribavirin (rbv) is a broad-spectrum antiviral agent that inhibits the production of infectious hantaan virus (htnv). although the mechanism of action of rbv against htnv is not understood, rbv is metabolized in human cells to both rbv-5'-monophosphate, which inhibits imp dehydrogenase, resulting in a decrease in intracellular gtp levels, and rbv-5'-triphosphate (rbv-tp), which could selectively interact with the viral rna polymerase. to elucidate which activity of rbv was most important to its a ... | 2007 | 17060520 |
| genetic properties of medium (m) and small (s) genomic rna segments of seoul hantavirus isolated from rattus norvegicus and antigenicity analysis of recombinant nucleocapsid protein. | a novel isolate of seoul (seo) hantaviruses was detected and identified in rattus norvegicus in shandong province, china and designated as jun5-14. the partial m segment and the coding region of nucleocapsid protein (np) in the s segment of jun5-14 were pcr-amplified and sequenced. nucleotide sequence analysis of the partial m segment (300 bp) revealed that jun5-14 isolate was closely related to former seo isolates in shandong (97.3-99.0% homology) and non-shandong seo viruses (84.1-97.7% homolo ... | 2007 | 16927115 |
| clinical and laboratory predictors of oliguric renal failure in haemorrhagic fever with renal syndrome caused by hantaan virus. | haemorrhagic fever with renal syndrome (hfrs), caused by hantavirus infection, develops into acute renal failure (arf) of variable degrees of severity. we investigated the early predictive markers for oliguric arf in hfrs patients. | 2007 | 16930718 |
| hsp70 gene fused with hantavirus s segment dna significantly enhances the dna vaccine potency against hantaviral nucleocapsid protein in vivo. | heat shock proteins (hsps) have been shown to act as adjuvants when coadministered with peptide antigens or given as fusion proteins and enhance the vaccination efficiency. to evaluate the enhancement of the potency of hantaan virus (htnv) nucleocapsid protein (np) immunogenicity by heat shock protein 70 (hsp70), we developed a novel chimeric htnv s-hsp70 dna vaccine plasmid by genetically linking hsp70 gene to the full-length htnv s segment dna (htnv s dna). c57bl/6 mice were immunized with thi ... | 2007 | 16935395 |
| [screening of biopolymers from sea hydrocoles affecting the adsorption of hantaan virus]. | the biopolymers extracted from sea hydrocoles were screened and a group of sulfated polysaccharides--fucoidans having a pronounced inhibitory effect on the adsorption of hantaan virus in the cultured vero e6 cells was identified. the mechanism of action of sulfated polysaccharides was realized through competitive carbohydrate-specific binding to cell membrane receptors and through ligand-receptor interaction and blocking of hantaan virus glycoproteins (g1 and g2). | 2007 | 17500236 |
| lambda interferon (ifn-lambda) in serum is decreased in hantavirus-infected patients, and in vitro-established infection is insensitive to treatment with all ifns and inhibits ifn-gamma-induced nitric oxide production. | hantaviruses, causing hemorrhagic fever with renal syndrome (hfrs) and hantavirus cardiopulmonary syndrome (hcps), are known to be sensitive to nitric oxide (no) and to pretreatment with type i and ii interferons (alpha interferon [ifn-alpha]/ifn-beta and ifn-gamma, respectively). elevated serum levels of no and ifn-gamma have been observed in hfrs patients, but little is known regarding the systemic levels of other ifns and the possible effects of hantaviruses on innate antiviral immune respons ... | 2007 | 17522204 |
| nucleotide sequence characterization and phylogenetic analysis of hantaviruses isolated in shandong province, china. | china is the most severe endemic area of hemorrhagic fever with renal syndrome (hfrs) in the world with 30,000-50,000 cases reported annually, which accounts for more than 90% of total number of cases worldwide. the incidence rate of the syndrome in shandong province is one of the highest in china, which has ever reached 50 per 100,000 persons per year. however, the molecular characteristics of hantaviruses (hv) epidemic in shandong province remain unclear. therefore it is useful to clarify nucl ... | 2007 | 17531126 |
| emergence and persistence of hantaviruses. | hantaviral diseases have been recognized for hundreds of years but, until 1976, they had not been associated with an infectious agent. when lee and colleagues isolated what is now known as hantaan virus, the techniques they introduced allowed further investigations into the etiology of the classical hantavirus disease, hemorrhagic fever with renal syndrome (hfrs), now known to be caused by any of multiple hantaviruses. the discovery of hantavirus pulmonary syndrome (hps) in the new world, and th ... | 2007 | 17848067 |
| soochong virus and amur virus might be the same entities of hantavirus. | amur virus (amrv) and soochong virus (soov) were reported to be carried by korean field mice (apodemus peninsulae) in the far east of russia, china, and korea. the distinction and demarcation between these two viruses have been a matter of debate. in order to clarify this issue and to confirm taxonomic position of amrv and soov, the extensive phylogenetic analyses based on entire s segment and entire m segment sequences of amrv, soov and other reference virus strains deposited in genbank, were c ... | 2007 | 17854038 |
| [late consequences of hemorrhagic fever with renal syndrome in a woman who had it during pregnancy]. | the authors adduce a brief description of the features and outcomes of hemorrhagic fever with renal syndrome (hfrs) in 8 pregnant women. the results of the examination of a 54-year-old woman and her son, who suffered from a severe form of hers 28 years ago during the 31st week of pregnancy, are presented in detail. antibodies to hantaan virus 1:32 were found; magnetic resonance tomography of the skull revealed sequelae of hypophysial hemorrhage with the formation of "partly empty ephippium". the ... | 2007 | 17665611 |
| development of serological assays for thottapalayam virus, an insectivore-borne hantavirus. | thottapalayam virus (tpmv), a member of the genus hantavirus in the family bunyaviridae, was isolated from an insectivore, suncus murinus (musk shrew), captured in southern india in 1964. while the isolation of tpmv predates the discovery of the prototype hantaan virus, little is known about its genetics and biology. to date, preliminary evidence suggests that tpmv differs significantly, both antigenically and genetically, from all known rodent-borne hantaviruses. however, since detailed epizoot ... | 2007 | 17182762 |
| a comparative epidemiological study of hantavirus infection in japan and far east russia. | hantaviruses are causative agents of some severe human illnesses, including hemorrhagic fever with renal syndrome (hfrs) and hantavirus pulmonary syndrome (hps). the viruses are maintained by rodent hosts, and humans acquire infection by inhaling virus-contaminated excreta from infected animals. to examine the epidemiology of hantavirus infections in japan and far east russia, we conducted epidemiological surveys in these regions. in japan, anti-hantavirus antibodies were found in four rodent sp ... | 2007 | 17405352 |
| use of saccharomyces cerevisiae-expressed recombinant nucleocapsid protein to detect hantaan virus-specific immunoglobulin g (igg) and igm in oral fluid. | hantaan virus is the causative agent of severe hemorrhagic fever with renal syndrome. clinical surveillance for hantaan virus infection is unreliable, and laboratory verification is essential. the detection of virus-specific immunoglobulin m (igm) and igg in serum is most commonly used for the diagnosis of hantavirus infection. testing of oral fluid samples instead of serum offers many advantages for surveillance. however, commercial tests for hantavirus-specific antibodies are unavailable. for ... | 2007 | 17913864 |
| muju virus, a novel hantavirus harboured by the arvicolid rodent myodes regulus in korea. | acute-phase sera from >5 % of cases of haemorrhagic fever with renal syndrome occurring annually in korea have been found to exhibit a fourfold or higher antibody titre to puumala virus (puuv) than to hantaan virus (htnv) by double-sandwich igm elisa, suggesting the existence of a puuv-related hantavirus. based on the phylogenetic relationships among arvicolid rodents, the royal vole (myodes regulus) was targeted as a likely reservoir host of hantavirus. using rt-pcr, a genetically distinct hant ... | 2007 | 17947538 |
| mxa-independent inhibition of hantaan virus replication induced by type i and type ii interferon in vitro. | interferons (ifn) induce an antiviral state against hantaan virus (htnv) but the mechanisms responsible for inhibition are unclear. the ifn-inducible mxa is discussed to be important for control of infections with hantaviruses. to characterize the role of endogenous mxa, the inhibition of htnv induced by type i and type ii ifns was compared in vero and a549 cells. ifnalpha and ifngamma reduced production of infectious virions, viral rna, and nucleocapsid protein with the same efficiency, althoug ... | 2007 | 17482705 |