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1.
Annu Rev Immunol ; 36: 603-638, 2018 04 26.
Artigo em Inglês | MEDLINE | ID: mdl-29490165

RESUMO

Globally, about 36.7 million people were living with HIV infection at the end of 2015. The most frequent infection co-occurring with HIV-1 is Mycobacterium tuberculosis-374,000 deaths per annum are attributable to HIV-tuberculosis, 75% of those occurring in Africa. HIV-1 infection increases the risk of tuberculosis by a factor of up to 26 and alters its clinical presentation, complicates diagnosis and treatment, and worsens outcome. Although HIV-1-induced depletion of CD4+ T cells underlies all these effects, more widespread immune deficits also contribute to susceptibility and pathogenesis. These defects present a challenge to understand and ameliorate, but also an opportunity to learn and optimize mechanisms that normally protect people against tuberculosis. The most effective means to prevent and ameliorate tuberculosis in HIV-1-infected people is antiretroviral therapy, but this may be complicated by pathological immune deterioration that in turn requires more effective host-directed anti-inflammatory therapies to be derived.


Assuntos
Coinfecção , Infecções por HIV/imunologia , HIV-1/imunologia , Interações Hospedeiro-Patógeno/imunologia , Imunidade , Mycobacterium tuberculosis/imunologia , Tuberculose/imunologia , Animais , Terapia Antirretroviral de Alta Atividade , Antituberculosos/farmacologia , Antituberculosos/uso terapêutico , Progressão da Doença , Variação Genética , Infecções por HIV/diagnóstico , Infecções por HIV/terapia , Infecções por HIV/virologia , HIV-1/genética , Humanos , Tuberculose/diagnóstico , Tuberculose/microbiologia , Tuberculose/terapia , Replicação Viral
2.
Cell ; 184(15): 3899-3914.e16, 2021 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-34237254

RESUMO

The impact of the microbiome on HIV disease is widely acknowledged although the mechanisms downstream of fluctuations in microbial composition remain speculative. We detected rapid, dynamic changes in translocated microbial constituents during two years after cART initiation. An unbiased systems biology approach revealed two distinct pathways driven by changes in the abundance ratio of Serratia to other bacterial genera. Increased CD4 T cell numbers over the first year were associated with high Serratia abundance, pro-inflammatory innate cytokines, and metabolites that drive Th17 gene expression signatures and restoration of mucosal integrity. Subsequently, decreased Serratia abundance and downregulation of innate cytokines allowed re-establishment of systemic T cell homeostasis promoting restoration of Th1 and Th2 gene expression signatures. Analyses of three other geographically distinct cohorts of treated HIV infection established a more generalized principle that changes in diversity and composition of translocated microbial species influence systemic inflammation and consequently CD4 T cell recovery.


Assuntos
Microbioma Gastrointestinal , Infecções por HIV/imunologia , Infecções por HIV/microbiologia , Terapia Antirretroviral de Alta Atividade , Biodiversidade , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD8-Positivos/imunologia , Quimiocinas/sangue , Estudos de Coortes , Glicólise , Infecções por HIV/sangue , Infecções por HIV/tratamento farmacológico , Humanos , Inflamação/genética , Inflamação/patologia , Mitocôndrias/metabolismo , Monócitos/metabolismo , Ácidos Nucleicos/sangue , Análise de Componente Principal , Serratia/fisiologia , Células Th1/imunologia , Células Th2/imunologia , Transcrição Gênica , Uganda , Carga Viral/imunologia
3.
Immunity ; 54(12): 2842-2858.e5, 2021 12 14.
Artigo em Inglês | MEDLINE | ID: mdl-34813775

RESUMO

People living with HIV (PLWH) are at increased risk for developing skin and mucosal malignancies despite systemic reconstitution of CD4+ T cells upon antiretroviral therapy (ART). The underlying mechanism of chronic tissue-related immunodeficiency in HIV is unclear. We found that skin CD4+ tissue-resident memory T (Trm) cells were depleted after HIV infection and replenished only upon early ART initiation. TCR clonal analysis following early ART suggested a systemic origin for reconstituting CD4+ Trm cells. Single-cell RNA sequencing in PLWH that received late ART treatment revealed a loss of CXCR3+ Trm cells and a tolerogenic skin immune environment. Human papilloma virus-induced precancerous lesion biopsies showed reduced CXCR3+ Trm cell frequencies in the mucosa in PLWH versus HIV- individuals. These results reveal an irreversible loss of CXCR3+ Trm cells confined to skin and mucosa in PLWH who received late ART treatment, which may be a precipitating factor in the development of HPV-related cancer.


Assuntos
Linfócitos T CD4-Positivos/imunologia , Infecções por HIV/imunologia , HIV-1/fisiologia , Síndromes de Imunodeficiência/imunologia , Células T de Memória/imunologia , Mucosa/imunologia , Pele/imunologia , Adulto , Terapia Antirretroviral de Alta Atividade , Feminino , Infecções por HIV/tratamento farmacológico , Sobreviventes de Longo Prazo ao HIV , Humanos , Síndromes de Imunodeficiência/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Receptores CXCR3/metabolismo , Análise de Sequência de RNA , Análise de Célula Única , Tempo para o Tratamento , Adulto Jovem
4.
Immunity ; 53(5): 908-924, 2020 11 17.
Artigo em Inglês | MEDLINE | ID: mdl-33207216

RESUMO

Understanding the earliest immune responses following HIV infection is critical to inform future vaccines and therapeutics. Here, we review recent prospective human studies in at-risk populations that have provided insight into immune responses during acute infection, including additional relevant data from non-human primate (NHP) studies. We discuss the timing, nature, and function of the diverse immune responses induced, the onset of immune dysfunction, and the effects of early anti-retroviral therapy administration. Treatment at onset of viremia mitigates peripheral T and B cell dysfunction, limits seroconversion, and enhances cellular antiviral immunity despite persistence of infection in lymphoid tissues. We highlight pertinent areas for future investigation, and how application of high-throughput technologies, alongside targeted NHP studies, may elucidate immune response features to target in novel preventions and cures.


Assuntos
Evolução Biológica , Infecções por HIV/imunologia , HIV/imunologia , Interações Hospedeiro-Patógeno/imunologia , Imunidade , Doença Aguda , Imunidade Adaptativa , Animais , Terapia Antirretroviral de Alta Atividade , Contagem de Linfócito CD4 , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD4-Positivos/metabolismo , Citocinas/metabolismo , Gerenciamento Clínico , Infecções por HIV/terapia , Infecções por HIV/virologia , Humanos , Imunidade Inata , Mediadores da Inflamação/metabolismo , Tecido Linfoide/imunologia , Tecido Linfoide/metabolismo , Síndrome de Imunodeficiência Adquirida dos Símios/imunologia , Síndrome de Imunodeficiência Adquirida dos Símios/virologia , Vírus da Imunodeficiência Símia/imunologia , Tempo para o Tratamento , Resultado do Tratamento , Carga Viral
5.
Circ Res ; 134(11): 1581-1606, 2024 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-38781302

RESUMO

HIV infection and antiretroviral therapy alter mitochondrial function, which can progressively lead to mitochondrial damage and accelerated aging. The interaction between persistent HIV reservoirs and mitochondria may provide insight into the relatively high rates of cardiovascular disease and mortality in persons living with HIV. In this review, we explore the intricate relationship between HIV and mitochondrial function, highlighting the potential for novel therapeutic strategies in the context of cardiovascular diseases. We reflect on mitochondrial dynamics, mitochondrial DNA, and mitochondrial antiviral signaling protein in the context of HIV. Furthermore, we summarize how toxicities related to early antiretroviral therapy and current highly active antiretroviral therapy can contribute to mitochondrial dysregulation, chronic inflammation, and poor clinical outcomes. There is a need to understand the mechanisms and develop new targeted therapies. We further consider current and potential future therapies for HIV and their interplay with mitochondria. We reflect on the next-generation antiretroviral therapies and HIV cure due to the direct and indirect effects of HIV persistence, associated comorbidities, coinfections, and the advancement of interdisciplinary research fields. This includes exploring novel and creative approaches to target mitochondria for therapeutic intervention.


Assuntos
Doenças Cardiovasculares , Infecções por HIV , Mitocôndrias , Humanos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/metabolismo , Infecções por HIV/complicações , Doenças Cardiovasculares/metabolismo , Doenças Cardiovasculares/virologia , Mitocôndrias/metabolismo , DNA Mitocondrial/metabolismo , DNA Mitocondrial/genética , Animais , Terapia Antirretroviral de Alta Atividade/efeitos adversos , Dinâmica Mitocondrial/efeitos dos fármacos , Fármacos Anti-HIV/uso terapêutico , Fármacos Anti-HIV/efeitos adversos
6.
Nat Immunol ; 14(11): 1104-7, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24145780

RESUMO

As a result of decades of research-driven breakthroughs in basic and clinical science and recent advances in the broad-scale implementation of interventions for the prevention and treatment of infection with HIV, a turning point has been reached in the global HIV-AIDS pandemic. To end the pandemic and achieve the goal of an AIDS-free generation, researchers and clinicians must follow the dual pathway of optimizing the implementation of existing prevention and treatment interventions and discovering with basic and clinical research new and effective tools in both of these arenas.


Assuntos
Síndrome da Imunodeficiência Adquirida/epidemiologia , Síndrome da Imunodeficiência Adquirida/prevenção & controle , HIV/imunologia , Pandemias , Vacinas contra a AIDS/imunologia , Síndrome da Imunodeficiência Adquirida/imunologia , Síndrome da Imunodeficiência Adquirida/virologia , Fármacos Anti-HIV/uso terapêutico , Anticorpos Neutralizantes/imunologia , Antígenos Virais/imunologia , Terapia Antirretroviral de Alta Atividade , Humanos , Estados Unidos/epidemiologia
7.
Immunity ; 45(3): 466-468, 2016 09 20.
Artigo em Inglês | MEDLINE | ID: mdl-27653598

RESUMO

A new macaque study by Cartwright et al. (2016) suggests that CD8(+) T cells could play a previously unrecognized role in the suppression of HIV-1 during ongoing antiretroviral therapy.


Assuntos
Linfócitos T CD8-Positivos/imunologia , Animais , Fármacos Anti-HIV/imunologia , Fármacos Anti-HIV/farmacologia , Fármacos Anti-HIV/uso terapêutico , Terapia Antirretroviral de Alta Atividade/métodos , Linfócitos T CD8-Positivos/virologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , HIV-1/efeitos dos fármacos , HIV-1/imunologia , Humanos
8.
Immunity ; 45(3): 656-668, 2016 09 20.
Artigo em Inglês | MEDLINE | ID: mdl-27653601

RESUMO

Infection with HIV persists despite suppressive antiretroviral therapy (ART), and treatment interruption results in rapid viral rebound. Antibody-mediated CD8(+) lymphocyte depletion in simian immunodeficiency virus (SIV)-infected rhesus macaques (RMs) shows that these cells contribute to viral control in untreated animals. However, the contribution of CD8(+) lymphocytes to maintaining viral suppression under ART remains unknown. Here, we have shown that in SIV-infected RMs treated with short-term (i.e., 8-32 week) ART, depletion of CD8(+) lymphocytes resulted in increased plasma viremia in all animals and that repopulation of CD8(+) T cells was associated with prompt reestablishment of virus control. Although the number of SIV-DNA-positive cells remained unchanged after CD8 depletion and reconstitution, the frequency of SIV-infected CD4(+) T cells before depletion positively correlated with both the peak and area under the curve of viremia after depletion. These results suggest a role for CD8(+) T cells in controlling viral production during ART, thus providing a rationale for exploring immunotherapeutic approaches in ART-treated HIV-infected individuals.


Assuntos
Antirretrovirais/farmacologia , Linfócitos T CD8-Positivos/imunologia , Síndrome de Imunodeficiência Adquirida dos Símios/tratamento farmacológico , Síndrome de Imunodeficiência Adquirida dos Símios/imunologia , Vírus da Imunodeficiência Símia/imunologia , Animais , Anticorpos Antivirais/imunologia , Terapia Antirretroviral de Alta Atividade/métodos , Linfócitos T CD4-Positivos/efeitos dos fármacos , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD8-Positivos/efeitos dos fármacos , Feminino , Depleção Linfocítica/métodos , Macaca mulatta , Masculino , Síndrome de Imunodeficiência Adquirida dos Símios/virologia , Vírus da Imunodeficiência Símia/efeitos dos fármacos , Carga Viral/efeitos dos fármacos , Carga Viral/imunologia , Viremia/tratamento farmacológico , Viremia/imunologia , Viremia/virologia , Replicação Viral/efeitos dos fármacos , Replicação Viral/imunologia
9.
Rev Med Virol ; 34(3): e2540, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38708846

RESUMO

Despite advances in HIV treatment, the burden of viral non-suppression (VNS) remains a treatment success concern, particularly in Sub-Saharan African (SSA) countries. We determined the prevalence and factors associated with VNS for people living with HIV (PLHIV) receiving antiretroviral therapy (ART). This review, registered with PROSPERO (CRD42023470234), conducted an extensive search for evidence, focusing on PLHIV living in SSA on ART from the year 2000 to 19th October 2023, across databases including PubMed/MEDLINE, Embase, Web of Science, and Scopus. A total of 2357 articles were screened, from which 32 studies met the criteria for the final analysis, involving 756,620 PLHIV of all ages. The pooled prevalance for VNS was found to be 20.0% (95% CI: 15.43%-25.52%, I2 = 100%, p-value <0.01) Children and adolescents demonstrated the highest prevalence of VNS (viral load ≥1000 copies/mL) at 27.98% (95% CI: 21.91%-34.97%, I2 = 94%, p-value <0.01). The study revealed various factors associated with increased odds (risk) of VNS, p-value <0.05. These factors encompassed socio-demographics such as sex, age, education level, and marital status. Additionally, aspects related to HIV care, such as the facility attended, HIV status disclosure and adherence exhibited higher odds of VNS. Suboptimal ART adherence, longer duration on ART, socio-economic factors, lack of family and social support, presence of co-morbidities, advanced WHO HIV clinical stage, ART regimens, lower CD4+ count, abnormal body mass index, history of treatment interruptions, and progression of HIV illness were associated with VNS. Furthermore, behavioural/psychological factors including depression, substance use, negative perceptions towards ART, experiences of abuse, alcohol use, stigma, and certain patterns of sexual behaviour were also identified as factors for VNS. The occurrence of two VNS to every ten PLHIV on ART poses a threat to the progress made towards reaching the third 95% UNAIDS target in SSA. Additionally, these findings highlight the intricate interplay of various factors, encompassing patient characteristics, behavioural patterns, sociocultural influences, and pharmacological factors, all impacting VNS among PLHIV. Recognising its multifaceted nature, we recommend designing and implementing high impact interventions to effectively address VNS in SSA.


Assuntos
Infecções por HIV , Carga Viral , Humanos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Infecções por HIV/virologia , África Subsaariana/epidemiologia , Prevalência , Fármacos Anti-HIV/uso terapêutico , Fatores de Risco , Adolescente , Feminino , Masculino , Adulto , Antirretrovirais/uso terapêutico , Terapia Antirretroviral de Alta Atividade , Criança
10.
Rev Med Virol ; 34(2): e2529, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38520650

RESUMO

The discovery of anti-retroviral (ARV) drugs over the past 36 years has introduced various classes, including nucleoside/nucleotide reverse transcriptase inhibitors, non-nucleoside reverse transcriptase inhibitors, protease inhibitor, fusion, and integrase strand transfer inhibitors inhibitors. The introduction of combined highly active anti-retroviral therapies in 1996 was later proven to combat further ARV drug resistance along with enhancing human immunodeficiency virus (HIV) suppression. As though the development of ARV therapies was continuously expanding, the variation of action caused by ARV drugs, along with its current updates, was not comprehensively discussed, particularly for HIV-1 infection. Thus, a range of HIV-1 ARV medications is covered in this review, including new developments in ARV therapy based on the drug's mechanism of action, the challenges related to HIV-1, and the need for combination therapy. Optimistically, this article will consolidate the overall updates of HIV-1 ARV treatments and conclude the significance of HIV-1-related pharmacotherapy research to combat the global threat of HIV infection.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , HIV-1 , Humanos , Infecções por HIV/tratamento farmacológico , Inibidores da Transcriptase Reversa/farmacologia , Inibidores da Transcriptase Reversa/uso terapêutico , Fármacos Anti-HIV/farmacologia , Fármacos Anti-HIV/uso terapêutico , Terapia Antirretroviral de Alta Atividade
11.
J Infect Dis ; 229(6): 1786-1790, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38226493

RESUMO

A subset of antiretroviral therapy-treated persons with human immunodeficiency virus (HIV), referred to as immunological nonresponders (INRs), fails to normalize CD4+ T-cell numbers. In a case-control study involving 26 INRs (CD4 < 250 cells/µL) and 25 immunological responders (IRs; CD4 ≥ 250 cells/µL), we evaluated the potential contribution of transcriptionally competent defective HIV-1 proviruses to poor CD4+ T-cell recovery. Compared to the responders, the INRs had higher levels of cell-associated HIV RNA (P = .034) and higher percentages of HLA-DR+ CD4+ T cells (P < .001). While not encoding replication-competent viruses, the RNA transcripts frequently encoded HIV-1 Gag-p17 and Nef proteins. These transcripts and/or resulting proteins may activate pathway(s) leading to the immunological nonresponse phenotype.


Assuntos
Linfócitos T CD4-Positivos , Infecções por HIV , HIV-1 , Provírus , Humanos , HIV-1/genética , HIV-1/imunologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Infecções por HIV/virologia , Infecções por HIV/genética , Masculino , Estudos de Casos e Controles , Feminino , Adulto , Provírus/genética , Pessoa de Meia-Idade , Linfócitos T CD4-Positivos/imunologia , RNA Viral/genética , Contagem de Linfócito CD4 , Transcrição Gênica , Antirretrovirais/uso terapêutico , Terapia Antirretroviral de Alta Atividade
12.
J Antimicrob Chemother ; 79(5): 1133-1141, 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38546974

RESUMO

INTRODUCTION: The DOLAM trial revealed that switching from triple antiretroviral therapy (three-drug regimen; 3DR) to dolutegravir plus lamivudine (two-drug regimen; 2DR) was virologically non-inferior to continuing 3DR after 48 weeks of follow-up. Weight increased with 2DR relative to 3DR but it did not impact on metabolic parameters. METHODS: Multiomics plasma profile was performed to gain further insight into whether this therapy switch might affect specific biological pathways. DOLAM (EudraCT 201500027435) is a Phase 4, randomized, open-label, non-inferiority trial in which virologically suppressed persons with HIV treated with 3DR were assigned (1:1) to switch to 2DR or to continue 3DR for 48 weeks. Untargeted proteomics, metabolomics and lipidomics analyses were performed at baseline and at 48 weeks. Univariate and multivariate analyses were performed to identify changes in key molecules between both therapy arms. RESULTS: Switching from 3DR to 2DR showed a multiomic impact on circulating plasma concentration of N-acetylmuramoyl-L-alanine amidase (Q96PD5), insulin-like growth factor-binding protein 3 (A6XND0), alanine and triglyceride (TG) (48:0). Correlation analyses identified an association among the up-regulation of these four molecules in persons treated with 2DR. CONCLUSIONS: Untargeted multiomics profiling studies identified molecular changes potentially associated with inflammation immune pathways, and with lipid and glucose metabolism. Although these changes could be associated with potential metabolic or cardiovascular consequences, their clinical significance remains uncertain. Further work is needed to confirm these findings and to assess their long-term clinical consequences.


Assuntos
Infecções por HIV , Compostos Heterocíclicos com 3 Anéis , Lamivudina , Oxazinas , Piperazinas , Piridonas , Humanos , Compostos Heterocíclicos com 3 Anéis/uso terapêutico , Compostos Heterocíclicos com 3 Anéis/administração & dosagem , Infecções por HIV/tratamento farmacológico , Lamivudina/uso terapêutico , Lamivudina/administração & dosagem , Masculino , Oxazinas/uso terapêutico , Feminino , Adulto , Pessoa de Meia-Idade , Metabolômica , Lipidômica , Fármacos Anti-HIV/uso terapêutico , Fármacos Anti-HIV/administração & dosagem , Plasma/química , Proteômica , Terapia Antirretroviral de Alta Atividade , Substituição de Medicamentos , Triglicerídeos/sangue , Alanina/sangue , Multiômica
13.
J Antimicrob Chemother ; 79(6): 1380-1384, 2024 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-38656448

RESUMO

OBJECTIVES: Charaterization of the plasma concentrations of antiretrovirals in a 4-days-a-week maintenance treatment strategy in the ANRS-170-QUATUOR study. METHODS: Patients were randomized in two groups receiving triple therapy taken 4-days-ON and 3-days-OFF (4/7) or continuous therapy (7/7). Plasma antiretroviral concentrations were monitored during the 'ON-treatment period' (Day 3 or 4 of the 4-day treatment block) and the 'OFF-treatment period' (Day 3 of the 3-day drug cessation) for the 4/7 group, or before the daily drug intake for the 7/7 group, until week-48 (W48). After W48, all patients switched to the 4/7 strategy and were followed until W96. RESULTS: W0 measured concentrations were comparable in both groups, except for raltegravir, concentrations of which were higher in the 4/7 group, and were all above the values usually recommended to be effective in therapeutic drug monitoring. Comparison of ON-period median concentrations between the two groups showed a statistical difference for rilpivirine [88 ng/mL (interquartile range (IQR) = 64-112) for 4/7 arm versus 130 ng/mL (82-160) for 7/7 arm, P < 0.001] and tenofovir [tenofovir disoproxil fumarate: 93 ng/mL (73-135) for 4/7 arm versus 117 ng/mL (83-160) for 7/7 arm, P < 0.001; tenofovir alafenamide: 11 ng/mL (7-15) for 4/7 arm versus 14 ng/mL (11-18) for 7/7 arm, P = 0.001]. Median OFF concentrations were significantly lower (P < 0.001) at the 48 week analysis for all medications except for raltegravir (P = 0.493) and atazanavir (P = 0.105), for which the numbers of patients were very small. CONCLUSIONS: The 4/7-day treatment option led to antiretroviral blood levels close to continuous treatment after the four consecutive days of medication, and to low levels at the end of the non-treatment period.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , HIV-1 , Humanos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/sangue , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , HIV-1/efeitos dos fármacos , Fármacos Anti-HIV/farmacocinética , Fármacos Anti-HIV/sangue , Fármacos Anti-HIV/uso terapêutico , Fármacos Anti-HIV/administração & dosagem , Monitoramento de Medicamentos/métodos , Terapia Antirretroviral de Alta Atividade , Quimioterapia de Manutenção/métodos , Resultado do Tratamento , Carga Viral , Tenofovir/sangue , Tenofovir/uso terapêutico , Tenofovir/farmacocinética , Tenofovir/administração & dosagem
14.
J Antimicrob Chemother ; 79(5): 1142-1152, 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38551451

RESUMO

OBJECTIVES: To assess the profiles and determinants of drug resistance in HIV-1-infected individuals undergoing ART in Guangxi. METHODS: Samples and data were collected from HIV-1-infected individuals experiencing virological failure post-ART from 14 cities in Guangxi. Sequencing of the HIV-1 pol gene was conducted, followed by analysis for drug resistance mutations using the Stanford University HIV Drug Resistance Database. Logistic regression was employed to identify potential risk factors associated with both HIV drug resistance and mortality. RESULTS: A total of 8963 individuals with pol sequences were included in this study. The overall prevalence of HIV-1 drug resistance (HIVDR) was 42.43% (3808/8963), showing a decrease from 59.62% to 41.40% from 2016 to 2023. Factors such as being aged ≥50 years, male, Han nationality, lower education levels, occupations including workers, peasants and children, AIDS, pre-treatment CD4 T cell counts <200 cells/mm3, infection with CRF01_AE and CRF55_01B subtypes, and ART regimen lamivudine/zidovudine/nevirapine were associated with higher susceptibility to HIVDR. The common mutations were M184V (17.38%) and K103N (22.14%). Additionally, the prevalence of M184V, S68G, M41L and G190A were different between the Han and Zhuang populations. Factors including age, gender, ethnicity, education level, occupation, infectious route, clinical stage, viral load, subtype, ART regimen and HIVDR showed significant associations with mortality. CONCLUSIONS: The factors contributing to drug resistance in the HIV-1 ART individuals in Guangxi appear to be notably intricate. Continuous reinforcement of drug resistance surveillance is imperative, accompanied by the optimization of ART regimens to mitigate virological failures effectively.


Assuntos
Fármacos Anti-HIV , Farmacorresistência Viral , Infecções por HIV , HIV-1 , Humanos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/virologia , Infecções por HIV/epidemiologia , HIV-1/genética , HIV-1/efeitos dos fármacos , China/epidemiologia , Masculino , Farmacorresistência Viral/genética , Feminino , Pessoa de Meia-Idade , Adulto , Fármacos Anti-HIV/uso terapêutico , Fármacos Anti-HIV/farmacologia , Fatores de Risco , Adulto Jovem , Prevalência , Mutação , Idoso , Genótipo , Adolescente , Produtos do Gene pol do Vírus da Imunodeficiência Humana/genética , Terapia Antirretroviral de Alta Atividade , Carga Viral/efeitos dos fármacos , Criança
15.
J Virol ; 97(11): e0102423, 2023 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-37877716

RESUMO

IMPORTANCE: HIV-1-specific CD8+ T cells are anticipated to become effector cells for curative treatment using the "shock and kill" approach in people living with HIV-1 (PLWH) under combined antiretroviral therapy (cART). Previous studies demonstrated that the frequency of HIV-1-specific CD8+ T cells is reduced under cART and their functional ability remains impaired. These studies analyzed T-cell responses to a small number of HIV-1 epitopes or overlapping HIV-1 peptides. Therefore, the features of CD8+ T cells specific for HIV-1 epitopes under cART remain only partially clarified. Here, we analyzed CD8+ T cells specific for 63 well-characterized epitopes in 90 PLWH. We demonstrated that CD8+ T cells specific for large numbers of HIV-1 epitopes were maintained in an epitope-dependent fashion under long-term cART and that long-term cART enhanced or restored the ability of HIV-1-specific T cells to proliferate in vitro. This study implies that some HIV-1-specific T cells would be useful as effector cells for curative treatment.


Assuntos
Fármacos Anti-HIV , Terapia Antirretroviral de Alta Atividade , Linfócitos T CD8-Positivos , Epitopos de Linfócito T , Infecções por HIV , HIV-1 , Humanos , Fármacos Anti-HIV/farmacologia , Fármacos Anti-HIV/uso terapêutico , Linfócitos T CD8-Positivos/citologia , Linfócitos T CD8-Positivos/efeitos dos fármacos , Linfócitos T CD8-Positivos/imunologia , Epitopos de Linfócito T/efeitos dos fármacos , Epitopos de Linfócito T/imunologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Infecções por HIV/terapia , HIV-1/efeitos dos fármacos , HIV-1/imunologia
16.
J Nutr ; 154(6): 1927-1935, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38615735

RESUMO

BACKGROUND: Anemia may be associated with poor clinical outcomes among people living with human immunodeficiency virus (HIV) (PLHIV) despite highly active antiretroviral therapy (HAART). There are concerns that iron supplementation may be unsafe to prevent and treat anemia among PLHIV. OBJECTIVE: The objective of the study was to evaluate the associations of anemia and iron supplementation with mortality and viral load among PLHIV in Tanzania. METHODS: We analyzed data from a cohort of 70,442 nonpregnant adult PLHIV in Tanzania conducted between 2015 and 2019. Regression models evaluated the relationships between anemia severity and iron supplement use with mortality and unsuppressed HIV-1 viral load among all participants and stratified by whether participants were initiating or continuing HAART. RESULTS: Anemia was associated with an increased risk of mortality and unsuppressed viral load for participants who initiated or continued HAART. Iron supplement use was associated with reduced mortality risk but also had a greater risk of an unsuppressed viral load among participants continuing HAART. There was no association of iron supplement use with mortality, and unsuppressed viral load among PLHIV that were initiating HAART. There was a stronger negative association between iron supplement use and the risk of having an unsuppressed viral load among participants with stage III/IV disease compared with stage I/II disease. CONCLUSIONS: Anemia is associated with increased risk of mortality and unsuppressed viral load, but the benefits and safety of iron supplements appear to differ for those initiating compared with continuing ART as well as by HIV disease severity.


Assuntos
Anemia , Suplementos Nutricionais , Infecções por HIV , Ferro , Carga Viral , Humanos , Tanzânia/epidemiologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/mortalidade , Infecções por HIV/complicações , Masculino , Feminino , Adulto , Anemia/mortalidade , Pessoa de Meia-Idade , Ferro/sangue , Ferro/administração & dosagem , Ferro/uso terapêutico , Terapia Antirretroviral de Alta Atividade , Estudos de Coortes , Adulto Jovem
17.
Trop Med Int Health ; 29(2): 113-127, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38112243

RESUMO

OBJECTIVE: The objective of the study was to determine the effect of probiotics and of probiotic-fermented foods on CD4 T-cell count, viral load, anaemia and body mass index (BMI) among people living with HIV (PLHIV). METHODS: In this article, we systematically reviewed the evidence on the influence of probiotic supplementation on CD4 lymphocyte count, viral load and anaemia among PLHIV on highly active antiretroviral therapy (HAART) and those who were HAART-naive. Medical literature databases identified randomised trials and pre-post studies of probiotic supplementation and HIV-related outcomes, and random effects meta-analysis was conducted. RESULTS: The preponderance of the evidence suggests that probiotic supplementation only improved CD4 lymphocyte count modestly, with quantitatively greater impact among individuals who were HAART-naive compared to HAART-experienced individuals. Probiotic supplementation improved CD4 lymphocyte count by 53 cells/mm3 (95% CI: 22 to 85) from 18 studies. Probiotic supplementation however reduced haemoglobin concentration by -2.1 g/L (95% CI: -4.0 to -0.2). Although viral load remain unchanged in HAART-experienced participants following probiotic supplementation, HAART-naïve participants saw a decrease in viral load. There were too few studies on the impact of probiotic supplementation on viral load (N = 1). CONCLUSION: Probiotic supplementation resulted in a modest increase in CD4 lymphocyte count among HAART-naive individuals with no significant change observed among HAART-experienced ones. Viral load and haemoglobin concentration also remained unchanged following probiotic supplementation. Further rigorous and well-powered studies may evaluate the effect of probiotic supplementation on important clinical outcomes among PLHIV on HAART.


Assuntos
Anemia , Infecções por HIV , Probióticos , Humanos , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Terapia Antirretroviral de Alta Atividade/métodos , Contagem de Linfócito CD4 , Probióticos/uso terapêutico , Hemoglobinas , Carga Viral
18.
BMC Infect Dis ; 24(1): 34, 2024 Jan 02.
Artigo em Inglês | MEDLINE | ID: mdl-38166819

RESUMO

BACKGROUND: In the first reported cases of human immunodeficiency virus (HIV) infection, people living with HIV (PLHIV) suffered weight loss, which was an independent predictor of mortality. Highly active antiretroviral therapy (HAART) has changed this scenario for ideal weight, overweight, and even obesity. However, some PLHIV, even on HAART, continue to lose weight. Thus, the guiding question of the study was: do PLHIV hospitalized using HAART with weight loss have higher mortality than hospitalized PLHIV using HAART without weight loss? METHOD: A systematic review and meta-analysis of prospective cohort studies published in English, Spanish, or Portuguese, searched in the MedLine, Embase, and LILACS databases from March 2020, until October 2023, reported by MOOSE. We analyzed the methodological quality and risk of bias using the Joanna Briggs Institute Critical Appraisal Tool for Cohort Studies; used the risk ratio (RR) to calculate the probability of hospitalized PLWH who lost weight dying, applied the random effect model and created the funnel plot. We used the inverse variance test estimated by the Mantel-Haenszel method, considering a 95% confidence interval (CI), heterogeneity (I2), total effect size (Z), and significance value of p < 0.05. We performed a sensitivity analysis with meta-regression and meta-analyses on subgroups to diagnose influence and outliers. The quality of evidence and strength of recommendation were analyzed using the Grading of Recommendations Assessment, Development, and Evaluation system (GRADE). RESULTS: We included 10 of the 711 studies identified, totaling 1,637 PLHIV. The studies were from South Africa (1), Canada (1), China (1), Brazil (1), Cameroon (1), Ethiopia (1), Thailand (1), Colombia (1), and Tanzania (2), from 1996 to 2017. The average age of the participants was 33.1 years old, and the male was predominant. The leading causes of hospital admission were related to co-infections, and the average hospitalization time was 20.5 days. The prevalence of death in hospitalized PLHIV using HAART who lost weight was 57.5%, with a 1.5 higher risk of dying (RR: 1.50, 95% CI: 1.03, 2.19, p = 0.04) than hospitalized PLHIV who did not lose weight. CONCLUSION: We concluded, with a very low confidence level, that that weight loss significantly increased the risk of death in hospitalized PLWH using HAART. TRIAL REGISTRATION AND FUNDING: PROSPERO International Prospective Register of Systematic Reviews CRD42020191246 https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020191246 .


Assuntos
Infecções por HIV , Adulto , Humanos , Masculino , Terapia Antirretroviral de Alta Atividade , Etiópia , Infecções por HIV/tratamento farmacológico , Estudos Prospectivos , Redução de Peso , Feminino
19.
BMC Infect Dis ; 24(1): 358, 2024 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-38549051

RESUMO

BACKGROUND: HIV virological failure is one of the main problems in HIV-infected patients, and identifying the main predictors of such treatment failure may help in combating HIV/AIDS. METHODOLOGY: This cross-sectional study included 1800 HIV-infected patients with either virological failure or treatment response. HIV viral load, CD4 count, and other tests were performed. Statistical analysis was used to determine the predictors of virological failure. RESULTS: Clinical stage, treatment with reverse transcriptase inhibitors (RTIs), under therapy for three years or more, suboptimal adherence to antiretroviral treatment (ART), age > 40 years, CD4 count < 200 cells/mm3, unemployment, being infected through sex, and the presence of symptoms were the predominant risk factors for virological failure. In addition, 55% of patients who experienced virological failure failed to experience immunological and/or clinical failure. CONCLUSION: As the first study in southern Iran and the second in Iran, Iranian policymakers should focus on intensive counseling and adherence support and emphasize more effective treatment regimens such as protease and integrase inhibitors (PIs and INTIs), to increase the chance of a treatment response to ART. The accuracy of identifying clinical and immunological criteria in resource-limited settings is not promising. The present findings can be used to determine effective measures to control HIV treatment failure and design efficient strategies for the ambitious 95-95-95 plan.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , Adulto , Humanos , Irã (Geográfico) , Estudos Transversais , Antirretrovirais/uso terapêutico , Antirretrovirais/farmacologia , Falha de Tratamento , Carga Viral , Contagem de Linfócito CD4 , Terapia Antirretroviral de Alta Atividade
20.
BMC Infect Dis ; 24(1): 160, 2024 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-38308222

RESUMO

The pathological consequences of inflammation persist in people living with the human immunodeficiency virus (PLWH), regardless of the positive outcomes of highly active antiretroviral therapy (HAART). The current systematic review and meta-analysis aims to understand and explore the levels of high-sensitivity C-reactive protein (hs-CRP) and other cardiovascular disease (CVD)-risk factors including lipid profiles among PLWH on HAART. Major electronic databases including PubMed, Scopus, and Web of Science were searched to retrieve relevant global literature reporting on hs-CRP levels in PLWH on HAART. A total of twenty-two studies with an average participant age of 40 years were eligible for this systematic review and meta-analysis. Majority of the included studies were from Africa (n = 11), the United States (n = 6), and Europe (n = 5). Our systemic review showed that most studies reported increased levels of hs-CRP among PLWH on HAART when compared to controls (PLWH not on HAART or those without HIV), especially in studies from Africa. This was supported by a meta-analysis showing significantly elevated levels of hs-CRP in PLWH on HAART when compared to PLWH not on HAART (standardised mean difference [SMD] = 0.56; 95% CI = 0.10­1.01, z = 2.41; p = 0.02) or those without HIV (SMD = 1.19; 95% CI = 0.76­1.63, z = 5.35; p < 0.001). Where lipid profiles, as a major predictor for CVD risk, were also impaired in PLWH on HAART when compared to PLWH not on HAART and HIV-negative participants. In conclusion, elevated levels of hs-CRP and lipid levels are prevalent in PLWH on HAART, this may increase the risk of CVD complications, especially for those people living in Africa. However, more evidence in larger population studies is required to confirm these outcomes and unveil any possible clinical implications of HAART-induced modulation of hs-CRP levels in PLWH.


Assuntos
Doenças Cardiovasculares , Infecções por HIV , Humanos , Adulto , Terapia Antirretroviral de Alta Atividade , Proteína C-Reativa , HIV , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/complicações , Lipídeos
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