Search Results - (Author, Cooperation:J. Chastang)

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  1. 1
    Staff View
    Publication Date:
    2011-04-09
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Base Pairing ; Cell Line ; Child, Preschool ; Chromosomes, Human, Pair 2/genetics ; Dwarfism/genetics/metabolism ; Female ; Fetal Growth Retardation/genetics/metabolism ; Humans ; Infant ; Introns ; Inverted Repeat Sequences ; Male ; Microcephaly/genetics/metabolism ; Microtubule-Associated Proteins/genetics ; Nucleic Acid Conformation ; Osteochondrodysplasias/genetics/metabolism ; Pedigree ; *Point Mutation ; RNA Splice Sites ; *RNA Splicing ; RNA, Small Nuclear/chemistry/*genetics/metabolism ; Spliceosomes/*genetics/metabolism
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Leroux, C. ; Chastang, J. ; Greenland, T. ; Mornex, J. F.
    Springer
    Published 1997
    Staff View
    ISSN:
    1432-8798
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Summary.  We have recently shown that French small ruminant lentiviruses (SRLV) from sheep are more similar to Caprine Arthritis Encephalitis Virus (CAEV) than to visna maedi virus (VMV) in a conserved region of the pol gene. To extend these results, we have examined sequences from a variable region of the env gene in French SRLV. We found that they were nearly equally distant from both CAEV and VMV strains, suggesting a considerable divergence since the initial introduction of the virus. Analysis of separate clones from individual animals showed that some carry a population of variant viruses. The study of further pol gene sequences from both goats and sheep suggests that viral variants show little or no host species specificity. A phylogenetic tree of pol gene sequences confirmed the presence of a novel genotype of SRLV in France.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s007050050147

    Articles: DFG German National Licenses
  3. 3
    Staff View
    ISSN:
    1432-8798
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Summary Visna-maedi virus induces in sheep an interstitial lung disease characterised by an accumulation of smooth muscle cells (SMC) or myomatosis. Infection by HIV-1 has been recently associated with disorders of the vessel-derived cells: primary pulmonary hypertension, coronary artery disease and smooth muscle tumors in humans. We hypothesized that, besides their regular targets (i.e. macrophages and lymphocytes), lentiviruses could infect smooth muscle cells. Smooth muscle cell cultures derived from ovine aorta were infected with visna-maedi virus strain K1514. The cultured cells were smooth muscle cells as demonstrated by their antigenic expression of α-actin and vimentin. The lentiviral infection of the smooth muscle cells was demonstrated by a typical cytopathic effect (syncytia), the expression of virus specific antigens, and the presence of genomic RNA detected by Northern blot analysis and RT PCR. The detection of a reverse transcriptase activity, the presence of viral RNA in supernatants of infected smooth muscle cells detected by RT PCR and their ability to infect ovine permissive fibroblasts demonstrated a productive infection. The ability of smooth muscle cells to be infected by lentiviruses may participate in the pathogenesis of the tissue damage associated with the lentiviruses such as myomatosis in sheep and vascular disease in humans.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01309719

    Articles: DFG German National Licenses