Abstract:
:Recent studies suggest that natural killer T (NKT) cells play a role in early antiviral pathogenesis and are rapidly depleted in chronic human immunodeficiency virus type 1 (HIV-1) clade B infection. We aimed to characterize the phenotypic and functional characteristics of NKT cells in HIV-1 clade C-infected Africans at different stages of HIV-1 disease. NKT cell frequencies, subsets, and ex vivo effector functions were assessed using multiparametric flow cytometry in a cross-sectional analysis of cryopreserved peripheral blood mononuclear cells from a cohort of 53 HIV-1 clade C chronically infected South African adults with CD4 T cell counts ranging from 94 to 839 cells/μl. We observed a significant decline of NKT cell numbers in advanced HIV-1 disease as well as activation and functional impairment of NKT cells in individuals with low CD4 T cell counts. The loss of NKT cells was largely driven by a reduction in the CD4(+) and CD4(-)CD8(-) NKT cell subsets in advanced disease. These findings demonstrate significant impairment of the NKT cell compartment in progressive HIV-1 clade C disease that might play an important role in the modulation of immune function in HIV-1 infection.
journal_name
AIDS Res Hum Retrovirusesjournal_title
AIDS research and human retrovirusesauthors
Mureithi MW,Cohen K,Moodley R,Poole D,Mncube Z,Kasmar A,Moody DB,Goulder PJ,Walker BD,Altfeld M,Ndung'u Tdoi
10.1089/AID.2010.0237subject
Has Abstractpub_date
2011-05-01 00:00:00pages
501-9issue
5eissn
0889-2229issn
1931-8405journal_volume
27pub_type
杂志文章abstract::We previously reported that passive transfer of a murine V3-specific monoclonal antibody (BAT123) to hu-PBL-SCID mice challenged with HIV-1LAI confers postexposure protection from infection. The role of the Fc fragment of this antibody as well as the involvement of the complement system in protection were evaluated in...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1998.14.205
更新日期:1998-02-10 00:00:00
abstract::The use of abacavir (ABC) may be associated with a hypersensitivity reaction (HSR) that requires discontinuation of the drug. The HLA-B*5701 allele has been linked to this HSR. Information on the strength of this association across distinct geographic regions and ethnicities is scarce. We tested HLA-B*5701 in 53 Spani...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.0244
更新日期:2007-11-01 00:00:00
abstract::The Brazilian AIDS epidemic is characterized by significant geographic contrasts: a reduction in incidence and mortality in the epicenter (southeast) and an increase in the northeast. HIV-1-transmitted drug resistance (TDR) and genetic diversity were investigated among 106 antiretroviral (ARV)-naive patients from Mara...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2014.0261
更新日期:2015-02-01 00:00:00
abstract::HLA-A*3303 is one of the common HLA alleles in East and Southeast Asia. Identification of HLA-A*3303-restricted HIV-1 cytotoxic T lymphocyte (CTL) epitopes is therefore required to investigate the immunopathogenesis of AIDS and vaccine development in these areas, where AIDS is rapidly expanding. We attempted to identi...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922203766774559
更新日期:2003-06-01 00:00:00
abstract::In an effort to identify an immunological basis for natural resistance to HIV-1 infection, we have examined serum antibody responses to HLA class I antigens in female prostitutes of the Nairobi Sex Workers Study. Anti-HLA antibodies are known to block HIV infectivity in vitro and can be protective against SIV challeng...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1998.14.109
更新日期:1998-01-20 00:00:00
abstract::Murine monoclonal antibodies (MAbs) raised against a recombinant nef protein fragment of human immunodeficiency virus type 1 (HIV-1) strain BH10 were characterized by an epitope mapping system using overlapping decapeptides. Four different immunogenic regions were identified. Ten human HIV-1-positive sera were tested ...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1991.7.37
更新日期:1991-01-01 00:00:00
abstract::Transition from latency to active replication is a crucial stage for the process of human immunodeficiency virus type 1 (HIV-1) infection and life cycle. HIV-1 replication in latently infected cells can be strongly induced by the cytokine tumor necrosis factor alpha (TNF-alpha) and the proliferation-arresting chemical...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1998.14.39
更新日期:1998-01-01 00:00:00
abstract::HIV was first described in Kenya in 1984-1985. Currently, Kenya has an estimated HIV-1 prevalence of 6.2%. With the introduction of antiretroviral drugs, the survival of most HIV patients has been prolonged markedly. However, this is greatly threatened by increasing rates of antiretroviral dug resistance, which may ev...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2015.0026
更新日期:2016-03-01 00:00:00
abstract::Human T cell leukemia virus type-1 (HTLV-1) is prevalent worldwide with foci of high prevalence. However, to date no effective vaccine or drug against HTLV-1 infection has been developed. In efforts to define the role of antibodies in the control of HTLV-1 infection, we capitalized on the use of our previously defined...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2013.0214
更新日期:2014-06-01 00:00:00
abstract::HIV-1 CRF07_BC became prevalent in Taiwan after the epidemic among injection drug users (IDUs). We describe a unique recombinant form (URF) consisting of CRF01_AE and CRF07_BC (named URF_0107-H8) genes detected from an IDU. The 8.8 kb near full-length genome of URF_0107-H8 had a CRF01_AE backbone with two CRF07_BC fra...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2015.0246
更新日期:2016-06-01 00:00:00
abstract::Enhancement of immunity in the setting of HIV infection is difficult owing to loss of functional CD4+ T cells. The MHC class II-deficient mouse (II-/-) environment simulates that of the immunocompromised HIV-infected individual, since these mice have low CD4+ T cell numbers, defective CD4-dependent responses, and are ...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1998.14.1263
更新日期:1998-09-20 00:00:00
abstract::Covert vertical transmission of feline immunodeficiency virus (FIV), the feline counterpart of human immunodeficiency virus type 1 (HIV-1), was identified in kittens born to FIV-infected cats. DNA PCR detected FIV gag and env sequences in tissues from kittens nonviable at birth, and in viable kittens monitored postnat...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922203765551764
更新日期:2003-05-01 00:00:00
abstract::Myeloid dendritic cells (mDCs) are essential for initiation of adaptive immune responses but are depleted in HIV infection. Evidence suggests that apoptosis mediates loss, and to further understand the pathways involved, expression of caspases mediating apoptosis via the extrinsic and intrinsic pathways was analyzed. ...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2012.0179
更新日期:2013-04-01 00:00:00
abstract::The first open reading frame of the HIV genome has been identified as the gag gene. The proteins encoded by this gene are p17 as the amino-terminal protein, p24 as the middle peptide, and p15 as the carboxyl-terminal end. A monoclonal antibody recognizing an antigenic determinant on a fragment of p15 has been develope...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1987.3.253
更新日期:1987-10-01 00:00:00
abstract::Non-B HIV-1 viruses are predominant in developing countries where access to antiretroviral drugs (ARVs) is progressively being intensified. It is important to obtain more data on the susceptibility of these viruses to available ARVs. CRF01_AE, CRF02_AG, and subtype C strains of HIV-1 obtained from untreated patients f...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.22.357
更新日期:2006-04-01 00:00:00
abstract::Benzylated peptides with a primary amino acid sequence corresponding to either human CD4(81-92) (#18), or chimpanzee CD4(81-92) (#18C), were equipotent inhibitors of human immunodeficiency virus type 1 (HIV-1) infection of CD4+ cells and high-affinity binding of 125I-gp120 to CD4+ cells. The chimpanzee-based CD4(81-92...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1991.7.521
更新日期:1991-06-01 00:00:00
abstract::The molecular epidemiology of HIV-1 in Argentina is more complex than was previously appreciated. One circulating recombinant form, CRF12_BF, and many related BF recombinant forms predominate in the capital city, Buenos Aires. This study of HIV-1 subtypes acquired perinatally between 1984 and 2000 has permitted, for t...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922202317406619
更新日期:2002-05-01 00:00:00
abstract::HIV-1 from infected subjects has been characterized in order to provide a more accurate view of the strains that are currently found in a given region. In this report, we focused on characterizing the pol gene diversity obtained from newly diagnosed patients in Santos metropolitan area, Brazil. This region is composed...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2009.0073
更新日期:2009-09-01 00:00:00
abstract::Primary isolates of human immunodeficiency virus type 1 (HIV-1) were obtained by coculture of peripheral blood lymphocytes (PBLs) from HIV-1-infected people with PBLs from uninfected donors. These viral stocks tend to be resistant to neutralization/inactivation by soluble CD4 (sCD4). When these stocks were passed thro...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1995.11.335
更新日期:1995-03-01 00:00:00
abstract::Endothelial progenitor cells (EPCs) repair damaged vascular endothelium, and low circulating EPC levels have been associated with cardiovascular disease (CVD). CD34+/KDR+ EPCs are commonly reported in the literature and CD34+/CD133+/KDR+ EPCs are rare in circulation but highly specific for endothelial lineage. HIV-inf...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2017.0057
更新日期:2018-01-01 00:00:00
abstract::Data reporting sexually transmitted infection (STI) incidence rates among HIV-negative U.S. men who have sex with men (MSM) are lacking. In addition, it is difficult to analyze the effect of STI on HIV acquisition given that sexual risk behaviors confound the relationship between bacterial STIs and incident HIV. The I...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2015.0013
更新日期:2015-06-01 00:00:00
abstract::Current methods to detect intraclade HIV dual infection are poorly suited for determining its prevalence in large cohorts. To investigate the potential of ultra-deep sequencing to screen for dual infection, we compared it to bulk sequence-based synonymous mixture index and the current standard of single genome sequenc...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2010.0042
更新日期:2010-12-01 00:00:00
abstract::The silent period that follows infection by the human immunodeficiency virus (HIV-1) and precedes seroconversion remains a problem for the screening of blood supply, and knowledge about the mechanism involved in the maintenance of latency is only fragmentary. Using purified nef recombinant protein and six synthetic ne...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1989.5.279
更新日期:1989-06-01 00:00:00
abstract::Although suppression of HIV-1 RNA below the limit of detection is associated with optimal outcomes, many patients can maintain or increase their CD4(+) count for prolonged time periods in the presence of persistent low-level viremia. We followed seven patients with prolonged (>5 years) discordant CD4(+)/viral load (VL...
journal_title:AIDS research and human retroviruses
pub_type: 临床试验,杂志文章
doi:10.1089/aid.2005.21.13
更新日期:2005-01-01 00:00:00
abstract::Currently, complex HIV-1 recombinations among the B', C, and CRF01_AE genotypes have frequently arisen in Yunnan, China. A novel HIV-1 complex circulating recombinant form (CRF) consisting of B', C, and CRF01_AE (CRF96_cpx) was recently characterized from three epidemiologically unlinked individuals. Two strains of th...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2017.0288
更新日期:2018-04-01 00:00:00
abstract::In many countries, HIV testing among tuberculosis (TB) patients is recommended so that both infections are appropriately treated. Cross-reacting antibodies to HIV antigens have been reported for several conditions, including TB, leprosy, malaria, and rheumatoid arthritis. To study the pattern and prevalence of cross-r...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2007.0211
更新日期:2008-07-01 00:00:00
abstract::Low albumin levels have been associated with HIV progression. The objective of this analysis was to confirm this association and to further examine the effect of albumin before and after HIV seroconversion on disease progression. The association was first examined among individuals already infected with HIV at entry i...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.22.14
更新日期:2006-01-01 00:00:00
abstract::The combination of didanosine (ddI) and lamivudine (3TC) is attractive considering its low cost, potency, tolerability, and convenience (once daily administration), but it is not recommended as first-line therapy for HIV infection. A prospective, multicenter, open, comparative trial was conducted in HIV-infected, anti...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,多中心研究
doi:10.1089/aid.2006.0029
更新日期:2007-10-01 00:00:00
abstract::We report a novel HIV-1 circulating recombinant form (CRF79_0107) from three epidemiologically unlinked patients through sexual contact in Shanxi province of China. This is the first second-generation circulating recombinant form identified in China. The breakpoint analysis of recombinants showed that CRF79_0107 was c...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2017.0066
更新日期:2017-10-01 00:00:00
abstract::C-C chemokine receptor (CCR) 5 (CCR5) is the main HIV-1 coreceptor involved in virus entry and cell-to-cell spread during acute and chronic infections: such CCR5 and T cell tropic viruses are adapted to and replicate in CD4+ memory T cells. Polymorphisms in CCR5 regulate CCR5 expression, which, in turn, influences HIV...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2020.0060
更新日期:2020-10-01 00:00:00