Abstract:
INTRODUCTION:T cell immunoglobulin and mucin domain (Tim) 3 and programmed death 1 (PD-1) are co-inhibitory receptors involved in the so-called T cell exhaustion, and in vivo blockade of these molecules restores T cell dysfunction. High expression of Tim-3 and PD-1 is induced after chronic antigen-specific stimulation of T cells during HIV infection. We have previously demonstrated that the interaction of Tim-3 with its ligand galectin-9 induces macrophage activation and killing of Mycobacterium tuberculosis. Our aim in this study was to analyze the Tim-3 expression profile before and after six months of antiretroviral therapy and the impact of Tim-3 and PD-1 blocking on immunity against M. tuberculosis. MATERIALS AND METHODS:HIV+ patients naïve to anti-retroviral therapy (ART) were followed up for six months. Peripheral immune-cell phenotype (CD38/HLA-DR/galectin-9/Tim-3 and PD-1) was assessed by flow cytometry. Supernatants were analyzed with a multiplex cytokine detection system (human Th1/Th2 cytokine Cytometric Bead Array) by flow cytometry. Control of bacterial growth was evaluated by using an in vitro experimental model in which virulent M. tuberculosis-infected macrophages were cultured with T cells in the presence or absence of Tim-3 and PD-1 blocking antibodies. Interleukin-1 beta treatment of infected macrophages was evaluated by enumerating colony-forming units. RESULTS:We showed that HIV+ patients had an increased expression of Tim-3 in T cells and were able to control bacterial growth before ART administration. By blocking Tim-3 and PD-1, macrophages and T cells recovered their functionality and had a higher ability to control bacterial growth; this result was partially dependent on the restitution of cytokine production. CONCLUSIONS:In this study, we demonstrated that increased Tim-3 expression can limit the ability of the immune system to control the infection of intracellular bacteria such as M. tuberculosis. The use of ART and the in vitro manipulation of the Tim-3 and PD-1 molecules restored the functionality of T cells and macrophages to restrict bacterial growth. Our results provide a novel immune strategy that may be implemented in the near future in order to improve the immune responses in HIV+ patients.
journal_name
J Int AIDS Socjournal_title
Journal of the International AIDS Societyauthors
Sada-Ovalle I,Ocaña-Guzman R,Pérez-Patrigeón S,Chávez-Galán L,Sierra-Madero J,Torre-Bouscoulet L,Addo MMdoi
10.7448/IAS.18.1.20078subject
Has Abstractpub_date
2015-10-19 00:00:00pages
20078issn
1758-2652pii
20078journal_volume
18pub_type
杂志文章abstract:INTRODUCTION:In 2013, the World Health Organization (WHO) recommended initiating combination ART (cART) in all adults with HIV and CD4+ lymphocyte counts (CD4) <500 cells/mm3 . In 2015, this was updated to recommend cART initiation in all patients with HIV, regardless of CD4 count. Implementation of these guidelines in...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25413
更新日期:2019-12-01 00:00:00
abstract:INTRODUCTION:The objective of this commentary is to review considerations for implementing routine viral load (VL) monitoring programmes for HIV-infected infants and children living in low- and middle-income countries (LMIC). Since 2013, the World Health Organization (WHO) guidelines recommend VL testing as the preferr...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25001
更新日期:2017-11-01 00:00:00
abstract:INTRODUCTION:Every year, approximately 260,000 children are infected with HIV in low- and middle-income countries. The timely initiation and high level of maintenance of antiretroviral therapy (ART) are crucial to reducing the suffering of HIV-positive children. We need to develop a better understanding of the backgrou...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.17.1.19310
更新日期:2014-12-03 00:00:00
abstract:INTRODUCTION:Pre-treatment HIV drug resistance (PDR) is an increasing problem in sub-Saharan Africa. Children are an especially vulnerable population to develop PDR given that paediatric second-line treatment options are limited. Although monitoring of PDR is important, data on the paediatric prevalence in sub-Saharan ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.19.1.21140
更新日期:2016-11-10 00:00:00
abstract::Family-based interventions with children who are affected by HIV and AIDS are not well established. The Collaborative HIV Prevention and Adolescent Mental Health Program (CHAMP) represents one of the few evidence-based interventions tested in low-income contexts in the US, Caribbean and South Africa. This paper provid...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章,评审
doi:10.1186/1758-2652-13-S2-S8
更新日期:2010-06-23 00:00:00
abstract:INTRODUCTION:Women living with HIV are required to transition into the prevention of mother-to-child transmission of HIV (PMTCT) services when they become pregnant and back to ART services after delivery. Transition can be a vulnerable time when many women are lost from HIV care yet there is little guidance on the opti...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章,评审
doi:10.1002/jia2.25633
更新日期:2021-01-01 00:00:00
abstract:INTRODUCTION:There is great interest for integrating care for non-communicable diseases (NCDs) into routine HIV services in sub-Saharan Africa (SSA) due to the steady rise of the number of people who are ageing with HIV. Suggested health system approaches for intervening on these comorbidities have mostly been normativ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25508
更新日期:2020-06-01 00:00:00
abstract:INTRODUCTION:The evolving HIV epidemic, coupled with advances in HIV treatment, has resulted in an ageing HIV-diagnosed population. It has been suggested that adverse physical and psychological effects of HIV may be higher among older people. However, few studies have examined the effect of older age on well-being for ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.17.4.19511
更新日期:2014-11-02 00:00:00
abstract:INTRODUCTION:Routes of transmission and reasons for HIV testing are important epidemiologic data to analyze the epidemic and to tailor the response to AIDS. The aim of this study was to analyze reasons for testing and transmission ways of HIV among recently diagnosed HIV patients registered in the multicenter HIV-TR co...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.17.4.19595
更新日期:2014-11-02 00:00:00
abstract:INTRODUCTION:Since June 2016, the national HIV programme in Malawi has adopted Universal Test and Treat (UTT) guidelines requiring that all persons who test HIV positive will be referred to start antiretroviral therapy (ART). Although there is strong evidence from clinical trials that early initiation of ART leads to r...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25239
更新日期:2019-02-01 00:00:00
abstract:INTRODUCTION:Integrating standardized measures of HIV stigma and discrimination into research studies of emerging HIV prevention approaches could enhance uptake and retention of these approaches, and care and treatment for people living with HIV (PLHIV), by informing stigma mitigation strategies. We sought to develop a...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25421
更新日期:2019-12-01 00:00:00
abstract:INTRODUCTION:Current healthcare systems fail to provide adequate HIV services to men. In Zambia, 25% of adult men living with HIV were unaware of their HIV status in 2018, and 12% of those who were unaware of their HIV statu were not receiving antiretroviral therapy (ART) due to pervasive barriers to HIV testing servic...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25520
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND:Young people in southern and eastern Africa remain disproportionately vulnerable to HIV with gender inequalities and livelihood insecurities being key drivers of this. Behavioural HIV prevention interventions have had weak outcomes and a new generation of structural interventions have emerged seeking to chal...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章,评审
doi:10.7448/IAS.15.3.17362
更新日期:2012-06-14 00:00:00
abstract:INTRODUCTION:Virtually no African country provides HIV prevention services in sex work settings with an adequate scale and intensity. Uncertainty remains about the optimal set of interventions and mode of delivery. METHODS:We systematically reviewed studies reporting interventions for reducing HIV transmission among f...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章,评审
doi:10.7448/IAS.16.1.17980
更新日期:2013-03-04 00:00:00
abstract:INTRODUCTION:HIV-1 viral escape in the cerebrospinal fluid (CSF) despite viral suppression in plasma is rare [1,2]. We describe the case of a 50-year-old HIV-1 infected patient who was diagnosed with HIV-1 in 1995. Antiretroviral therapy (ART) was started in 1998 with a CD4 T cell count of 71 cells/ìL and HIV-viremia o...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.17.4.19745
更新日期:2014-11-02 00:00:00
abstract:INTRODUCTION:High levels of HIV seroconcordance at the population level reduce the potential for effective HIV transmission. However, the level of HIV seroconcordance is largely unknown among heterosexual couples in sub-Saharan Africa. We aimed to quantify the population level HIV seroconcordance in stable heterosexual...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25432
更新日期:2020-01-01 00:00:00
abstract:INTRODUCTION:Lopinavir/ritonavir-based antiretroviral therapy (ART) is recommended for all HIV-infected children less than three years. However, little is known about its field implementation and effectiveness in West Africa. We assessed the 12-month response to lopinavir/ritonavir-based antiretroviral therapy in a coh...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.20.01.21362
更新日期:2017-04-25 00:00:00
abstract:INTRODUCTION:The Robert Koch Institute (RKI) aimed to assess a molecular surveillance strategy based on filter-dried serum spots (DSS) of all newly diagnosed HIV infections in Germany. In 2013, diagnostic laboratories sent DSS to the RKI representing 55% of the newly diagnosed HIV infections reported to the RKI (protec...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.17.4.19670
更新日期:2014-11-02 00:00:00
abstract:: The HIV/AIDS epidemic continues to be a major issue facing Botswana, with overall adult HIV prevalence estimated to be 25.7 percent in 2007. This paper estimates the cost and impact of the draft Ministry of Health male circumcision strategy using the UNAIDS/WHO Decision-Makers' Programme Planning Tool (DMPPT). Demogr...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1186/1758-2652-12-7
更新日期:2009-05-27 00:00:00
abstract:INTRODUCTION:The relative efficacy of different antiretroviral (ART) regimens has been extensively evaluated in the context of clinical trials, using HIV viral load (VL) measurements at pre-specified timepoints after ART onset. However, data from real-life studies using combined longitudinal measurements of cumulative ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25397
更新日期:2019-11-01 00:00:00
abstract:INTRODUCTION:In the Microbicide Trial Network MTN-003 (VOICE) study, a Phase IIB pre-exposure prophylaxis trial of daily oral or vaginal tenofovir (TFV), product adherence was poor based on pharmacokinetic (PK) drug detection in a random subsample. Here, we sought to compare behavioural and PK measures of adherence and...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章,随机对照试验
doi:10.7448/IAS.19.1.20642
更新日期:2016-02-04 00:00:00
abstract:INTRODUCTION:HIV incidence among men who have sex with men (MSM) is high in China. Pre-exposure prophylaxis (PrEP) is a promising mean to prevent HIV transmission but it is not widely available in China. We conducted a large Internet-based online survey to assess the willingness of Chinese MSM to take PrEP and associat...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25242
更新日期:2019-02-01 00:00:00
abstract:INTRODUCTION:Older adults living with HIV (OALHIV; ≥50 years) who use drugs face unique needs and challenges that compromise their health and wellbeing due to the structural and environmental barriers they experience, in addition to being disproportionately affected by comorbidities. Nevertheless, research on this popu...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25577
更新日期:2020-08-01 00:00:00
abstract:INTRODUCTION:People living with HIV (PLHIV) on antiretroviral therapy (ART) experience high rates of non-communicable diseases (NCDs). These co-morbidities often accumulate and older adults may suffer from multimorbidity. Multimorbidity has been associated with loss of quality of life, polypharmacy, and increased risk ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25233
更新日期:2019-01-01 00:00:00
abstract::Prevention of HIV infection has recently acquired new effective tools, based on the provision of antiretrovirals, to both decrease the "source" of HIV infection and/or to decrease host susceptibility to HIV infection. The milestone concept of using antiretrovirals for prevention has been tested already in the 1990s, t...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.17.4.19521
更新日期:2014-11-02 00:00:00
abstract::The strength of the evidence linking concurrency to HIV epidemic severity in southern and eastern Africa led the Joint United Nations Programme on HIV/AIDS and the Southern African Development Community in 2006 to conclude that high rates of concurrent sexual partnerships, combined with low rates of male circumcision ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章,评审
doi:10.1186/1758-2652-14-13
更新日期:2011-03-15 00:00:00
abstract::Paediatric antiretroviral treatment (ART) failure is an under-recognized issue that receives inadequate attention in the field of paediatrics and within HIV treatment programmes. With paediatric ART failure rates ranging from 19.3% to over 32% in resource limited settings, a comprehensive evaluation of the causes of f...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.18.1.20090
更新日期:2015-07-23 00:00:00
abstract::Potent antiretroviral therapy (ART) reduces mortality and morbidity in people living with HIV by reducing viral load and allowing their immune systems to recover. The reduction in viral load soon after starting ART has led to the hypothesis that early and widespread ART could prevent onward transmission and therefore ...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1186/1758-2652-14-S1-S6
更新日期:2011-07-06 00:00:00
abstract:INTRODUCTION:As adolescents transition from childhood to adulthood, they experience major physical, social and psychological changes, and are at heightened risk for developing mental health conditions and engaging in health-related risk behaviours. For adolescents living with HIV (ALHIV), these risks may be even more p...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.1002/jia2.25556
更新日期:2020-09-01 00:00:00
abstract:INTRODUCTION:Since 2003, US government funding to address the HIV and AIDS pandemic has been subject to an anti-prostitution clause. Simultaneously, the efficacy of some HIV prevention efforts for sex work in areas receiving US government funding has diminished. This article seeks to explain why. METHODS:This analysis...
journal_title:Journal of the International AIDS Society
pub_type: 杂志文章
doi:10.7448/IAS.16.1.17354
更新日期:2013-03-28 00:00:00