Journal of General Virology
0022-1317
1465-2099
Anh Quốc
Cơ quản chủ quản: MICROBIOLOGY SOC , Microbiology Society
Lĩnh vực:
Virology
Phân tích ảnh hưởng
Thông tin về tạp chí
Journal of General Virology welcomes high-quality research and review articles that contribute significantly to the field of virology. We particularly welcome fundamental studies on virus replication, pathogenesis and virus-host interactions. We also welcome phylogenetic or epidemiologic studies, or studies that address clinical aspects of virus infection, provided that these lead to testable hypotheses and contain new information relevant to virus biology.
Các bài báo tiêu biểu
Characterization of the genomic sequence of type V (or 3a) hepatitis C virus isolates and PCR primers for specific detection
Tập 74 Số 11 - Trang 2385-2390 - 1993
Comparison of the coat protein genes of five fish nodaviruses, the causative agents of viral nervous necrosis in marine fish
Tập 76 Số 7 - Trang 1563-1569 - 1995
Molecular and Antigenic Analyses of Serotypes 8 and 10 of Bovine Rotaviruses in Thailand
Tập 72 Số 12 - Trang 2929-2937 - 1991
CD134 and CXCR4 expression corresponds to feline immunodeficiency virus infection of lymphocytes, macrophages and dendritic cells The lymphotropic lentiviruses feline immunodeficiency virus (FIV) and human immunodeficiency virus (HIV) enter cells by sequential interaction with primary receptors CD134 or CD4, respectively, and subsequently with chemokine receptors. The host-cell range for FIV is broader than that for HIV, but whether this is a function of receptor expression is unknown. Lack of reagents specific to feline molecules has limited detection and analysis of receptors and their interaction with viral components. Here, the expression of CD134 and CXCR4 on feline T and B lymphocytes, dendritic cells (DCs) and macrophages was examined and the kinetics of FIV replication were assessed. Quantification of CD134 mRNA by real-time PCR indicated expression in all leukocytes, with significantly more transcripts in CD4+ lymphocytes than in other leukocytes. Antibodies against human CD134 bound inconsistently to feline leukocytes. CXCR4 was detected with antibody clone 12G5 on the surface of monocyte-derived cells only, but gene transcripts were present in all cells, with the highest copy number in lymphocytes. CXCR4 expression decreased and CD134 expression increased with cell activation in lymphocytes. A subtype B biological isolate of FIV infected DCs, macrophages and lymphocytes, with the highest replication in CD4+ lymphocytes, whilst cloned FIV P14 infected all cells, but replicated less efficiently. Although viral replication was lower in DCs and macrophages than in lymphocytes, DCs expressed specific receptors and were infected productively with FIV, as indicated by viral ultrastructure and DNA detection. These results may implicate altered function of DCs in the induction of specific immunity against FIV.
Tập 89 Số 1 - Trang 277-287 - 2008
Feline immunodeficiency virus subtypes A, B and C and intersubtype recombinants in Ontario, Canada Knowledge of the geographical distribution of feline immunodeficiency virus (FIV) subtypes is important for understanding different disease courses and for vaccine design. Intersubtype recombination may develop in areas where more than one subtype is prevalent and has the potential to create new transmittable variants with novel pathogenic properties. In this study, 40 FIV-positive DNA samples were classified by sequence analysis of the LTR–gag region. Phylogenetic analysis indicated that 32 Canadian FIV isolates clustered with previously identified subtypes A, B and C and that subtype A was most frequent in Ontario. Four strains with inconsistent clade assignment were further analysed by sequencing of the env –LTR regions. Comparisons of phylogenetic trees constructed from the two different regions of the genome and analysis of similarities to reference sequences yielded classification of three samples as A/B and one as A/C intersubtype recombinants. Although the A/B recombinant samples were obtained from unrelated cats in geographically disparate regions, a common breakpoint was consistently identified within gag . In addition, there was no evidence of co-infection with parental strains of subtypes A and B as indicated by PCR-based limiting dilution assays, although these assays allowed for the identification of two different recombinant viruses co-existing in one sample. Both sequences contained the same breakpoint. These findings suggested that a new circulating recombinant FIV may be enzootic in Ontario.
Tập 85 Số 7 - Trang 1843-1852 - 2004
Gene-expression changes induced by Feline immunodeficiency virus infection differ in epithelial cells and lymphocytes Infection of cats with Feline immunodeficiency virus (FIV) is an important model for understanding comparative lentivirus biology. In vivo , FIV infects lymphocytes and monocyte/macrophages, but in vitro infection is commonly investigated in epithelial Crandell–Reese Feline Kidney (CRFK) cells. In this study, the transcriptional responses of CRFK cells and primary lymphocytes to infection with FIV 34TF, a cloned subtype A virus, and FIV USgaB01, a biological subtype B isolate, were determined. Reverse-transcribed mRNA from both cell types was hybridized to microarrays containing 1700 human expressed sequence tags in duplicate and data were analysed with Significance Analysis of Microarrays (sam ) software. Results from six experiments assessing homeostatic cross-species hybridization excluded 3·48 % inconsistently detected transcripts. Analysis of data from five time points over 48 h after infection identified 132 and 24 differentially expressed genes in epithelial cells and lymphocytes, respectively. Genes involved in protein synthesis, the cell cycle, structure and metabolism were affected. The magnitude of gene-expression changes ranged from 0·62 to 1·62 and early gene induction was followed by downregulation after 4 h. Transcriptional changes in CRFK cells were distinct from those in lymphocytes, except for heat-shock cognate protein 71, which was induced at multiple time points in both cell types. These findings indicate that FIV infection induces transcriptional changes of a modest magnitude in a wide range of genes, which is probably reflective of the relatively non-cytopathic nature of virus infection.
Tập 86 Số 8 - Trang 2239-2248 - 2005
Genetic variability among group A and B respiratory syncytial viruses in Mozambique: identification of a new cluster of group B isolates Respiratory syncytial virus (RSV) is the major cause of acute lower respiratory tract infection in children and vulnerable adults, but little is known regarding RSV infection in Africa. In this report, a recent RSV outbreak in Mozambique was studied and results showed that 275 of 3192 (8·6%) nasopharyngeal aspirates tested were RSV-positive by ELISA. RSV presents two antigenic groups (A and B) with a high genetic and antigenic variability between and within them. Analysis by a new RFLP assay of RT–PCR amplified N protein gene products showed a higher prevalence of group B RSV than that of group A (85% versus 15%). However, genetic variability of the G protein gene was higher among group A RSV strains. The frequency and pattern of glycosylation sites were also quite different between both groups. In addition, two different phylogenetic clusters of Mozambican viruses were found within each group, but only sequences from cluster B-I were relatively distinct from previously described isolates. The implications of such differences in the antigenic and immunogenic characteristics of each group are discussed.
Tập 82 Số 1 - Trang 103-111 - 2001
Antigenic structure of the human respiratory syncytial virus G glycoprotein and relevance of hypermutation events for the generation of antigenic variants.
Tập 78 Số 10 - Trang 2419-2429 - 1997
Demonstration that Glycoprotein G Is the Attachment Protein of Respiratory Syncytial Virus
Tập 68 Số 9 - Trang 2521-2524 - 1987
Antigenic structure, evolution and immunobiology of human respiratory syncytial virus attachment (G) protein.
Tập 78 Số 10 - Trang 2411-2418 - 1997