Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Astrovirus


  
  AstrovirusINFECTION
Astrovirus diarrhea gene-rally is more mild than diarrhea due to rotavirus, and significant dehydration and hospitalization does not often result.
Astrovirus antibodies were detected in 7% of infants 6 to 12 months of age, 70% of school-aged children, and 75% of children 10 years of age.
The age-stratified overall seroprevalence of the seven human astrovirus serotypes was approxi-mately 15% for individuals less than 1 year of age, 29% for individuals 1 to 4 years of age group, and 44% for individuals 5 years of age and older.
www.nlv.ch /Astrovirus/Astroinfection.htm   (1049 words)

  
 Age-Stratified Seroprevalence of Neutralizing Antibodies to Astrovirus Types 1 to 7 in Humans in The Netherlands -- ...
of neutralizing antibodies to homologous (the astrovirus serotype
Titers of (cross-)neutralizing antibodies in sera from rabbits immunized with astrovirus serotypes 1 to 7
serum for astrovirus serotype 4 with astrovirus serotype 1.
cdli.asm.org /cgi/content/full/5/1/33   (3249 words)

  
 Bioline International Official Site (site up-dated regularly)
Astrovirus, nine (33%) were positive by at least one methodology and five presented positive results for all applied methodologies (Table).
Astrovirus, suggests: (i) the presence of defective particles in a lower concentration than EM sensitivity; (ii) a false positive result.
Intrafamilial outbreak of astrovirus gastroenteritis in São Paulo, Brazil.
www.bioline.org.br /request?oc01206   (2419 words)

  
 Astrovirus and adenovirus in children with diarrhea - Tips from Other Journals American Family Physician - Find Articles   (Site not responding. Last check: 2007-10-09)
Astrovirus infection was significantly more common in children with diarrhea (4 percent) than in children with the control group (less than 1 percent).
Diarrhea associated with astrovirus and enteric adenovirus infection was clinically similar, while diarrhea associated with rotavirus infection was more severe for all five sumptoms evaluated (fever, vomiting, anorexia, abdominal pain and respiratory symptoms).
Astrovirus infections were more common in children with diarrhea who were cared for in day care homes and in their own home than in children with diarrhea who attended day care centers.
www.findarticles.com /p/articles/mi_m3225/is_n2_v45/ai_12019357   (456 words)

  
 Pathology of astrovirus associated diarrhoea in a paediatric bone marrow transplant recipient -- Sebire et al. 57 (9): ...
Astrovirus and Breda virus infections of dome cell epithelium of bovine ileum.
Astrovirus induces diarrhea in the absence of inflammation and cell death.
Diagnosis of astrovirus gastroenteritis by antigen detection with monoclonal antibodies.
jcp.bmj.com /cgi/content/full/57/9/1001   (1648 words)

  
 Identification of astrovirus serotypes from children treated at the Hospitals for Sick Children, London 1981-93.
An enzyme immunoassay (EIA) for astrovirus type 1 together with immune electronmicroscopy (IEM) was used to type a collection of 162 astroviruses obtained from 1981-93 from children with diarrhoea.
Astrovirus type 1 was the prevalent serotype 107/125 (86%), followed by type 3 (8%), type 4 (6%) and type 2 (1%).
Six samples containing astrovirus could not be typed or detected by EIA because they were coated with coproantibodies; 11 others were not identified.
www.aegis.com /aidsline/1994/nov/M94B0275.html   (435 words)

  
 Publication Details - Dorsey Bass - Stanford University School of Medicine
Astrovirus, adenovirus, and rotavirus in hospitalized children: prevalence and association with gastroenteritis.
Astrovirus was detected in 5.2% of all children compared to 6.8% with rotavirus and 0.8% with adenovirus serotypes 40 or 41.
Astrovirus infections were significantly more likely to occur in younger infants and in children with compromised immunity.
med.stanford.edu /profiles/ddc/frdActionServlet?choiceId=showPublication&pubid=16854&fid=4017   (300 words)

  
 Astrovirus 1   (Site not responding. Last check: 2007-10-09)
Astrovirus gastroenteritis is a relatively mild form of rotavirus enteritis.
Astrovirus 1 is spread predominantly through the fecal-oral route but can also be transmitted through contaminated food and water, and the sharing of eating utensils.
Astrovirus infection can be prevented by frequent handwashing, disinfection of contaminated surfaces, prompt washing of soiled clothes, and avoidance of contaminated food or water.
www.stanford.edu /group/virus/flavi/2000/astro1.htm   (320 words)

  
 Medscape MEDLINE search: Astrovirus   (Site not responding. Last check: 2007-10-09)
Astrovirus is a common cause of gastroenteritis in humans that has been determined to be responsible for outbreaks of illness in several countries.
The incidence of astrovirus infection was determined among infants and young children admitted to Alice Springs Hospital (central Australia) with gastroenteritis from 1995 to 1998.
Use of a heminested reverse transcriptase PCR assay for detection of astrovirus in environmental swabs from an outbreak of gastroenteritis in a pediatric primary immunodeficiency unit.
search.medscape.com /uslclient/searchMedline.do?queryText=Astrovirus   (1103 words)

  
 [No title]
Astrovirus appeared to be associated with disease in these flocks (Table 1, Fig.
The Astrovirus status of each flock was determined using RT-PCR on direct samples and after passage through embryos.
Cross-tabulation of PEMS and Astrovirus status for 43 turkey flocks.
www.cvm.ncsu.edu /dphp/phm/Research/astrovirus/results.html   (159 words)

  
 Epidemiology of Astrovirus Infection in Young Children Hospitalized with Acute Gastroenteritis in Melbourne, Australia, ...
The astrovirus virion is composed of a single nonenveloped capsid layer of between 27 and 34 nm in diameter (7).
Astrovirus infections have been associated with sporadic diarrhea in children in the community as well as focal outbreaks.
The overall incidence of astrovirus infection was found to be 3.0% (40 of 1,327 total samples).
jcm.asm.org /cgi/content/full/38/3/1058   (2888 words)

  
 ARS Project: Identification and Molecular Characterization of AGENTS...ENTERITIS Mortality Syndrome of Turkeys (404971) ...
A higher level of genetic variation was observed among turkey astrovirus than expected which may have implications for the specificity of current diagnostics tests.
Numerous disinfectants were evaluated for their ability to inactivate turkey astrovirus, two (formaldehyde and Virkon S) were found to be effective at inactivating the virus.
Turkey astrovirus and turkey coronavirus are difficult to culture, therefore molecular detection methods are ideal for detection of these agents.
www.ars.usda.gov /research/projects/projects.htm?ACCN_NO=404971&showpars=true&fy=2004   (1814 words)

  
 CARACTERÍSTICAS CLÍNICAS Y MICROBIOLÓGICAS DE LAS GASTROENTERITIS POR ASTROVIRUS
Clínicamente, la gastroenteritis por astrovirus es más leve que la producida por rotavirus, principalmente en cuanto a la menor duración de la diarrea y menor incidencia de fiebre y vómitos, lo que se traduce también en una mayor frecuencia de detección en pacientes ambulatorios que en los que precisan hospitalización.
La existencia de eliminación de astrovirus en niños hospitalizados sin diarrea hace presuponer una frecuencia de infección nosocomial mucho mayor que la expuesta, en relación con una proporción de infecciones asintomáticas similar a la encontrada en los estudios de cohortes.
Population-based prevalence of symptomatic and asymptomatic astrovirus infection in rural mayan infants.
www.seimc.org /control/revi_viro/Astrovirus.htm   (3225 words)

  
 Proteolytic Processing of the Astrovirus Capsid -- Bass and Qiu 74 (4): 1810 -- The Journal of Virology
Serotype 1 astrovirus was grown in the absence of trypsin and purified by differential centrifugation as described above.
Astrovirus capsid protein is intracellularly postranslationally processed during trypsin-free astrovirus infection.
Lanes: IP, viral protein immunoprecipitated with MAb 5B7 from trypsin-free astrovirus infection; NT, virus grown in the absence of trypsin; T, virus grown in the presence of trypsin at 10 µg/ml; NT+T, virus grown in the absence of trypsin and subsequently treated for 30 min at 37°C with trypsin at 10 µg/ml.
jvi.asm.org /cgi/content/full/74/4/1810   (3518 words)

  
 The Astrovirus Home Page   (Site not responding. Last check: 2007-10-09)
Astrovirus News (the sequence of a mink astrovirus)
We are defining the role of a unique strain of avian astrovirus in an emerging disease of turkeys (Poult Enteritis Mortality Syndrome).
The current interests in the laboratory include developing an infectious clone, understanding the role of the immune response to astrovirus infection, and apoptosis.
www.iah.bbsrc.ac.uk /virus/Astroviridae/index.html   (262 words)

  
 New turkey virus identified, sequenced - December 1, 2001
A unique strain of astrovirus associated with poult enteritis mortality syndrome has been isolated from the thymus of commercial flocks, and its genomic sequence deciphered by the Department of Agriculture's Agricultural Research Service.
The ARS unit has developed a molecular-based diagnostic test to detect the astrovirus, which is serotypically and molecularly distinct from previously circulating strains of astrovirus in the United States.
The astrovirus is stable and resistant to disinfection, and producers are advised to avoid contaminating other flocks.
www.avma.org /onlnews/javma/dec01/s120101c.asp   (489 words)

  
 Astrovirus FACTSHEET
Animal and human strains of astroviruses have recently been placed in a separate Astrovirus family.
Molecular techniques using the polymerase chain reaction (PCR) method have also been utilised to detect the astrovirus genome directly from processed water samples and from cell culture after limited incubation.
ELISA tests have been developed for clinical detection of astroviruses in faeces but as significant quantities of virus are needed for a positive reaction, the test is unlikely to be useful for environmental studies.
www.nlv.ch /Astrovirus/Astrofactsheet.htm   (731 words)

  
 Duncan_Laramie
In turkey poults, astrovirus infections are among the first viruses seen in flocks monitored for enteric viral infections and are responsible for symptoms such as listlessness, nervousness and diarrhea.
A group of coronavirus negative turkeys was inoculated orally at seven days of age with bacteria free intestinal homogenate harvested from astrovirus infected embryos.
The use of TUNEL in intestinal tissue does not appear to be valid as staining does not correlate with morphological evidence of apoptosis and may be due in part to the high mitotic index of intestinal tissue.
www.uga.edu /honors/curo/symposium/2001/Duncan_Laramie.htm   (338 words)

  
 Astroviruses
A serological survey of 87 with children for antibody prevalence to astrovirus in England found that 67% of the children became seropositive by the age of 4 years and 87% by age 10.
Outbreaks of astrovirus infection involving children and elderly patients have been described and prolonged excretion documented in immunosuppressed, immunodeficient and AIDS patients.
Studies have shown that astrovirus type 1 is the prevalent strain in the UK accounting for 65% of the cases.
www-micro.msb.le.ac.uk /3035/Astroviruses.html   (617 words)

  
 Molecular Epidemiology of Astrovirus Infection in Barcelona, Spain -- Guix et al. 40 (1): 133 -- Journal of Clinical ...
Prevalence of group A rotavirus, human calicivirus, astrovirus, and adenovirus type 40 and 41 infections among children with acute gastroenteritis in Dijon, France.
Rotavirus, astrovirus and adenovirus associated with an outbreak of gastroenteritis in a South African child care centre.
Astrovirus infection in association with acute, persistent and nosocomial diarrhea in Bangladesh.
jcm.asm.org /cgi/content/full/40/1/133   (4122 words)

  
 Incidence of Human Astrovirus in Central Australia (1995 to 1998) and Comparison of Deduced Serotypes Detected from ...
Astrovirus serotypes (deduced from genotypes) from children with gastroenteritis in Alice Springs Hospital (1981 to 1998)
with respect to predominant astrovirus serotypes is not as clearcut.
Population-based prevalence of symptomatic and asymptomatic astrovirus infection in rural Guatemala.
jcm.asm.org /cgi/content/full/40/11/4114   (4114 words)

  
 Viral Gastroenteritis in Mongolian Infants | CDC EID
Rotavirus is the most frequent cause of acute sporadic childhood gastroenteritis (1), whereas norovirus infects both adults and children and is mainly associated with outbreaks of acute gastroenteritis (1).
For astrovirus PCR, Mon244, and 82b primers were used (6).
Astrovirus was detected in 2 male infants from different households.
www.cdc.gov /ncidod/EID/vol11no01/04-0337.htm   (1474 words)

  
 Reverse Transcriptase PCR Detection of Astrovirus, Hepatitis A Virus, and Poliovirus in Experimentally Contaminated ...   (Site not responding. Last check: 2007-10-09)
Reverse Transcriptase PCR Detection of Astrovirus, Hepatitis A Virus, and Poliovirus in Experimentally Contaminated Mussels: Comparison of Several Extraction and Concentration Methods -- Traore et al.
Reverse Transcriptase PCR Detection of Astrovirus, Hepatitis A Virus, and Poliovirus in Experimentally Contaminated Mussels: Comparison of Several Extraction and Concentration Methods
PEG 6000 precipitation and OF are the methods used most widely to concentrate enteric viruses from shellfish (20).
aem.asm.org /cgi/content/full/64/8/3118   (3063 words)

  
 Specialty Laboratories ::: we help doctors help patients
Characterization of a human astrovirus serotype 2 structural protein (VP26) that contains an epitope involved in virus neutralization.
A prospective case-control study of the role of Astrovirus in acute diarrhea among hospitalized young children.
Seroprevalence of astrovirus types 1 and 6 in London, determined using recombinant virus antigen.
www.specialtylabs.com /books/display.asp?id=1863   (350 words)

  
 Characterization of a calici-like virus (Newbury agent) found in association with astrovirus in bovine diarrhea.
Characterization of a calici-like virus (Newbury agent) found in association with astrovirus in bovine diarrhea.
A bovine calici-like virus and astrovirus, present in the same fecal sample from an outbreak of diarrhea, were separated from each other by calf passage.
The calici-like virus was shown to be antigenically distinct from a previously described isolate (Newbury agent SRV-2) by two-way cross-protection experiments in calves; calves immune to homologous challenge became clinically ill and excreted virus when challenged with the heterologous virus.
www.aegis.com /aidsline/1984/apr/M8440047.html   (342 words)

  
 SBMS @ UniS: Dr Mike Carter - Astroviruses
Identification and sequence determination of the capsid protein gene of a human astrovirus serotype 1.
Maczinke B, Jenner A, Brown D, Willcocks MM, Carter MJ and Brierley I. The human astrovirus type 1 RNA-dependent RNA polymerase coding region is expressed by ribosomal frameshifting.
Cubitt WD,Mitchell DK, Carter MJ, Willcocks MM and Holzel H. Application of electron-microscopy, enzyme immunoassay and RT-PCR to monitor an outbreak of astrovirus type 1 in a paediatric bone marrow transplant unit.
www.surrey.ac.uk /SBMS/ACADEMICS_homepage/carter_mike/astrovirus.html   (302 words)

  
 Astrovirus infection in children
Molecular assays have been applied to further describe the epidemiology of human astroviruses from a variety of geographic areas.
The burden of astrovirus infections compared with other enteric viral agents, including rotaviruses, caliciviruses, and enteric adenoviruses have been reported.
New methods for detection of astroviruses such as reverse transcription-polymerase chain reaction and molecular typing methods have advanced the understanding of the epidemiology.
www.vaccinationnews.com /dailynews/2003/May/16/AstrovirusInfection16.htm   (293 words)

  
 Proteolytic processing of a human astrovirus nonstructural protein -- Kiang and Matsui 83 (1): 25 -- Journal of General ...
Lee, T. and Kurtz, J. Prevalence of human astrovirus serotypes in the Oxford region 1976–92, with evidence for two new serotypes.
Lewis, T. L., Greenberg, H. B., Herrmann, J. E., Smith, L. and Matsui, S. Analysis of astrovirus serotype 1 RNA, identification of the viral RNA-dependent RNA polymerase motif, and expression of a viral structural protein.
Willcocks, M. and Carter, M. Identification and sequence determination of the capsid protein gene of human astrovirus serotype 1.
vir.sgmjournals.org /cgi/content/full/83/1/25   (5014 words)

  
 Turkey testing seeks solution to PEMS disease
This astrovirus is distinct from the astrovirus that circulated in turkeys in the 1980s.
During these studies, highly specific antibodies against the astrovirus were produced that detect the astrovirus in the intestines of infected embryos, and in the feces and tissues of infected turkeys by many different techniques including western blot, ELISA, and indirect immunofluorescence.
Finally, the researchers found that the astrovirus causes a disease similar to the mild form of PEMS affecting the immune system of the young birds, potentially leaving them susceptible to devastating secondary infections.
www.meatandpoultryonline.com /content/news/article.asp?DocID={0B602675-769A-11D4-8C59-009027DE0829}&Bucket=HomeLatestHeadlines&VNETCOOKIE=NO   (532 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.