Lentiviruses
Mostrando 1-12 de 279 artigos, teses e dissertações.
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1. Sodium dodecyl sulfate as a viral inactivator and future perspectives in the control of small ruminant lentiviruses
RESUMO As lentiviroses de pequenos ruminantes (LVPRs) são infecções que afetam caprinos e ovinos, causando doenças multissistêmicas crônicas, ocasionando grandes perdas econômicas. Os agentes causadores, lentivírus caprino (LVC) e o lentivírus ovino (LVO), apresentam tropismo por células da linhagem monocítico--fagocitária, as quais estão direta
Arq. Inst. Biol.. Publicado em: 28/11/2019
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2. Goat umbilical cord cells are permissive to small ruminant lentivirus infection in vitro
Abstract Small ruminant lentiviruses isolated from peripheral blood leukocytes and target organs can be propagated in vitro in fibroblasts derived from goat synovial membrane cells. These cells are obtained from tissues collected from embryos or fetuses and are necessary for the establishment of the fibroblast primary culture. A new alternative type of host
Braz. J. Microbiol.. Publicado em: 2017-03
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3. Interspecific transmission of small ruminant lentiviruses from goats to sheep
This study was conducted in order to evaluate the transmission of caprine lentivirus to sheep using different experimental groups. The first one (colostrum group) was formed by nine lambs receiving colostrum from goats positive for small ruminant lentiviruses (SRLV). The second group (milk group) was established by nine lambs that received milk of these g
Braz. J. Microbiol.. Publicado em: 21/07/2015
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4. CARACTERIZAÇÃO MOLECULAR DE LENTIVÍRUS DE PEQUENOS RUMINANTES ISOLADOS NO BRASIL / MOLECULAR CHARACTERIZATION OF Small ruminant lentiviruses ISOLATED IN BRAZIL
CAEV and MVV have been considered genetically distinct but antigenically related as pathogens of goats and sheep, respectively. Moreover, it was demonstrated that these viruses are constantly and easily breaking the barrier between sheep and goats, sheep being infected with CAEV and MVV infecting goats. Like all lentiviruses, the genome of CAEV has a high mu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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5. Prevalência da infecção por lentivírus de pequenos ruminantes em caprinos em Teresina, Piauí
The prevalence of anti-lentiviruses antibodies of small ruminants was investigated in goat herds in the city of Teresina, PI, Brazil. A seroepidemiological survey was conducted involving 480 animals, apparently healthy, belonging to six rural properties. The diagnostic test was the agar gel immunodiffusion (AGID), using antigens produced from cellular cultur
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2011-06
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6. Avaliação in vitro da atividade antiviral de produtos sintéticos e naturais contra lentivírus de pequenos ruminantes. / In vitro evaluation of antiviral activity of synthetic and natural products against small ruminant lentiviruses.
Objetivou-se avaliar o efeito antiviral de produtos sintéticos e naturais em fibroblastos caprinos infectados pelos vírus da Artrite Encefalite Caprina (CAEV) cepa Cork e Maedi-Visna (MVV) cepa K1514. Foram utilizados os inibidores da transcriptase reversa: lamivudina, zidovudina, didanosina, estavudina e efavirenz; os inibidores da protease lopinavir/rito
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2008
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7. Highly lytic and persistent lentiviruses naturally present in sheep with progressive pneumonia are genetically distinct.
Ovine and caprine lentiviruses share the capacity to induce slowly progressive and inflammatory diseases of the central nervous system (leukoencephalitis or visna), lungs (progressive pneumonia or maedi), and joints (arthritis) in their natural hosts. Studies on their replication indicated that ovine lentiviruses and caprine arthritis-encephalitis virus (CAE
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8. Lentiviruses are naturally resident in a latent form in long-term ovine fibroblast cultures.
Long-term ovine fibroblast cultures contain replicative-competent lentiviruses in a latent form. This in vitro phenomenon, never described previously for lentiviruses, was clearly demonstrated by activating the expression of latent viruses with various inducing cell treatments, some of which were efficient in inducing endogenous retroviruses or latent herpes
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9. Nucleotide sequence analysis of feline immunodeficiency virus: genome organization and relationship to other lentiviruses.
We determined the complete nucleotide sequence of an infectious proviral molecular clone (FIV-14) of the feline immunodeficiency virus (FIV). FIV-14 has a genome organization similar in complexity to other lentiviruses. In addition to three large open reading frames representing the gag, pol, and env genes, at least four small open reading frames are present
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10. Molecular biology and pathogenesis of animal lentivirus infections.
Lentiviruses are a subfamily of retroviruses that are characterized by long incubation periods between infection of the host and the manifestation of clinical disease. Human immunodeficiency virus type 1, the causative agent of AIDS, is the most widely studied lentivirus. However, the lentiviruses that infect sheep, goats, and horses were identified and stud
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11. Serological definition of the lentivirus group of retroviruses.
The major polypeptides of visna viruses and other lentiviruses have been isolated and shown to be closely related if not identical in radioimmunoassays. By this criterion the lentiviruses form a distinct group of retroviruses unrelated to spuma viruses, mammalian and avian retroviruses that cause tumors, and unclassified retroviruses of cattle and horses. Tw
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12. Vpr-induced cell cycle arrest is conserved among primate lentiviruses.
We previously reported that expression of human immunodeficiency virus type 1 strain NL4-3 (HIV-1(NL4-3))vpr causes cells to arrest in the G2 phase of the cell cycle. We examined the induction of cell cycle arrest by other HIV-1 isolates and by primary lentiviruses other than HIV-1. We demonstrate that the vpr genes from tissue culture-adapted or primary iso