Linked Life Data

18494601

Source:http://linkedlifedata.com/resource/pubmed/id/18494601

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2008-10-7
pubmed:abstractText
Arbovirus dissemination from the midgut of a vector mosquito is a critical step in facilitating virus transmission to a susceptible host. We previously characterized the genetic determinants of yellow fever virus (YFV) dissemination from the Aedes aegypti mosquito midgut using 2 genetically and phenotypically distinct strains of YFV: the wild-type, disseminating YFV Asibi strain and the attenuated, midgut-restricted YFV 17D vaccine strain. We examined the process of viral dissemination in YFV-infected Ae. aegypti by characterizing the tissue tropisms of 3 YF viruses in Ae. aegypti: Asibi, 17D, and a chimeric virus (17D/Asibi M-E) containing the Asibi membrane (M) and envelope (E) structural protein genes and 17D nonstructural genes. Ae. aegypti were infected orally, and whole, sectioned mosquitoes were evaluated for antigen distribution at 3, 7, 10, 14, and 21 days postinfection by immunohistochemical staining. Virus antigen was consistently observed in the posterior and anterior midgut, cardial epithelium, salivary glands, fat body, and nervous tissues in Asibi- and 17D/Asibi M-E-infected Ae. aegypti following 10 or 14-day extrinsic incubation, respectively. Amplification of virus in the abdominal and thoracic fat body is hypothesized to facilitate YFV infection of the Ae. aegypti salivary glands. As expected, 17D infection was generally limited to the midgut following oral infection. However, there did not appear to be a direct correlation between distribution of infection in the midgut and dissemination to the secondary tissues.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1557-7759
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
675-87
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Characterization of the antigen distribution and tissue tropisms of three phenotypically distinct yellow fever virus variants in orally infected Aedes aegypti mosquitoes.
pubmed:affiliation
Department of Pathology, University of Texas Medical Branch, Galveston, Texas 77555-0609, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.