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Prakash P, Swami Vetha BS, Chakraborty R, Wenegieme TY, Masenga SK, Muthian G, Balasubramaniam M, Wanjalla CN, Hinton AO, Kirabo A, Williams CR, Aileru A, Dash C. HIV-Associated Hypertension: Risks, Mechanisms, and Knowledge Gaps. Circ Res 2024; 134:e150-e175. [PMID: 38781298 PMCID: PMC11126208 DOI: 10.1161/circresaha.124.323979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
HIV type 1 (HIV-1) is the causative agent of AIDS. Since the start of the epidemic, HIV/AIDS has been responsible for ≈40 million deaths. Additionally, an estimated 39 million people are currently infected with the virus. HIV-1 primarily infects immune cells, such as CD4+ (cluster of differentiation 4+) T lymphocytes (T cells), and as a consequence, the number of CD4+ T cells progressively declines in people living with HIV. Within a span of ≈10 years, HIV-1 infection leads to the systemic failure of the immune system and progression to AIDS. Fortunately, potent antiviral therapy effectively controls HIV-1 infection and prevents AIDS-related deaths. The efficacy of the current antiviral therapy regimens has transformed the outcome of HIV/AIDS from a death sentence to a chronic disease with a prolonged lifespan of people living with HIV. However, antiviral therapy is not curative, is challenged by virus resistance, can be toxic, and, most importantly, requires lifelong adherence. Furthermore, the improved lifespan has resulted in an increased incidence of non-AIDS-related morbidities in people living with HIV including cardiovascular diseases, renal disease, liver disease, bone disease, cancer, and neurological conditions. In this review, we summarize the current state of knowledge of the cardiovascular comorbidities associated with HIV-1 infection, with a particular focus on hypertension. We also discuss the potential mechanisms known to drive HIV-1-associated hypertension and the knowledge gaps in our understanding of this comorbid condition. Finally, we suggest several directions of future research to better understand the factors, pathways, and mechanisms underlying HIV-1-associated hypertension in the post-antiviral therapy era.
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Affiliation(s)
- Prem Prakash
- The Center for AIDS Health Disparities Research
- Department of Microbiology, Immunology, and Physiology
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience Meharry Medical College, Nashville, Tennessee, 37208, USA
| | - Berwin Singh Swami Vetha
- Department of Foundational Sciences and Research, School of Dental Medicine, East Carolina University, 1851 MacGregor Downs Road, MS 701, Greenville, NC 27834
| | - Rajasree Chakraborty
- The Center for AIDS Health Disparities Research
- Department of Microbiology, Immunology, and Physiology
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience Meharry Medical College, Nashville, Tennessee, 37208, USA
| | - Tara-Yesomi Wenegieme
- Department of Neuroscience, Cell Biology and Physiology; Boonshoft School of Medicine and the College of Science and Mathematics; Wright State University, Dayton, OH 45435, USA
| | - Sepiso K. Masenga
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Kabwe, Central Province, 10101, Zambia
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Kabwe, Central Province, 10101, Zambia
| | - Gladson Muthian
- The Center for AIDS Health Disparities Research
- Department of Microbiology, Immunology, and Physiology
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience Meharry Medical College, Nashville, Tennessee, 37208, USA
| | - Muthukumar Balasubramaniam
- The Center for AIDS Health Disparities Research
- Department of Microbiology, Immunology, and Physiology
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience Meharry Medical College, Nashville, Tennessee, 37208, USA
| | | | - Antentor O Hinton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Annet Kirabo
- Division of Clinical Pharmacology, Department of Medicine
- Vanderbilt Center for Immunobiology
- Vanderbilt Institute for Infection, Immunology and Inflammation
- Vanderbilt Institute for Global Health, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Clintoria R. Williams
- Department of Neuroscience, Cell Biology and Physiology; Boonshoft School of Medicine and the College of Science and Mathematics; Wright State University, Dayton, OH 45435, USA
| | - Azeez Aileru
- Department of Foundational Sciences and Research, School of Dental Medicine, East Carolina University, 1851 MacGregor Downs Road, MS 701, Greenville, NC 27834
| | - Chandravanu Dash
- The Center for AIDS Health Disparities Research
- Department of Microbiology, Immunology, and Physiology
- Department of Biochemistry, Cancer Biology, Pharmacology and Neuroscience Meharry Medical College, Nashville, Tennessee, 37208, USA
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Hinton AO, N'jai AU, Vue Z, Wanjalla C. Connection Between HIV and Mitochondria in Cardiovascular Disease and Implications for Treatments. Circ Res 2024; 134:1581-1606. [PMID: 38781302 PMCID: PMC11122810 DOI: 10.1161/circresaha.124.324296] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
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.
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Affiliation(s)
- Antentor O Hinton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN (A.O.H., Z.V.)
| | - Alhaji U N'jai
- Biological Sciences, Fourah Bay College and College of Medicine and Allied Health Sciences (COMAHS), University of Sierra Leone, Freetown, Sierra Leone and Koinadugu College, Kabala (A.U.N.)
| | - Zer Vue
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN (A.O.H., Z.V.)
| | - Celestine Wanjalla
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (C.W.)
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Li C, Sun JP, Wang N, Yan P, Wang R, Su B, Zhang T, Wu H, Chen H, Li Z, Huang XJ. Plasma Cytokine Expression and Immune Reconstitution in Early and Delayed Anti-HIV 96-Weeks Treatment: A Retrospective Study. AIDS Res Hum Retroviruses 2024; 40:101-109. [PMID: 37051683 DOI: 10.1089/aid.2022.0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
HIV is an immunodeficiency disease with emergence of inadequate corresponding reconstruction therapies. Pyroptosis of CD4+T cell is mainly caused by immune activation and inflammation that cannot be reduced by successful antiretroviral therapy (ART) alone. Coinfections because of CD4+T cell reconstitution failure can occur. Anti-inflammatory treatment determines the success of immune reconstitution. In our experiment, only a few cytokines could recover to normal level following a 2-year antiretroviral treatment in early ART initiation, which is consistent with current findings about adjuvant HIV anti-inflammatory therapy. Early infection is often accompanied by a more severe inflammatory response. Innate immunity cytokines like granulocyte macrophage-colony stimulating factor, IFN-γ induced protein 10 kDa, and tumor necrosis factor-α exhibited the most elevated levels among all kinds of inflammatory cytokines. The correlation analysis showed at least eight cytokines contributing to the changes of CD4/CD8 ratio.
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Affiliation(s)
- Chao Li
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Jian-Ping Sun
- Biomedical Information Center, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Ni Wang
- Biomedical Informatics Laboratory, Capital Medical University, Beijing, China
| | - Ping Yan
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Rui Wang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Bin Su
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Tong Zhang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Hao Wu
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Hui Chen
- Biomedical Informatics Laboratory, Capital Medical University, Beijing, China
| | - Zhen Li
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
| | - Xiao-Jie Huang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing You-An Hospital, Capital Medical University, Beijing, China
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Ma H, Zhang Q, Liang W, Han A, Xie N, Xiang H, Wang X. Short-Term Exposure to PM 2.5 and O 3 Impairs Liver Function in HIV/AIDS Patients: Evidence from a Repeated Measurements Study. TOXICS 2023; 11:729. [PMID: 37755740 PMCID: PMC10537338 DOI: 10.3390/toxics11090729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/11/2023] [Accepted: 08/23/2023] [Indexed: 09/28/2023]
Abstract
Studies investigating the relationship between ambient air pollutants and liver function are scarce. Our objective was to examine the associations of acute exposure to PM2.5 and O3 with levels of hepatic enzymes in people living with HIV/AIDS (PWHA). Our study involved 163 PWHA, who were evaluated for serum hepatic enzymes up to four times within a year. We extracted daily average concentrations of PM2.5, PM2.5 components, and O3 for each participant, based on their residential address, using the Tracking of Air Pollution in China database. Linear mixed-effect models were utilized to assess the associations of acute exposure to PM2.5 and O3 with hepatic enzymes. Weighted quantile sum regression models were employed to identify the major constituents of PM2.5 that affect hepatic enzymes. The percent change of aspartate aminotransferase (AST) concentration was positively correlated with a 10 µg/m3 increase in PM2.5, ranging from 1.92 (95% CI: 3.13 to 4.38) to 6.09 (95% CI: 9.25 to 12.38), with the largest effect observed at lag06. Additionally, acute O3 exposure was related to increased levels of alanine aminotransferase (ALT), AST, and alkaline phosphatase (ALP) concentrations. Co-exposure to high levels of PM2.5 and O3 had an antagonistic effect on the elevation of AST. Further analysis revealed that SO42- and BC were major contributors to elevated AST concentration due to PM2.5 constituents. A stronger association was found between O3 exposure and ALT concentration in female PWHA. Our study found that short-term exposure to PM2.5 and O3 was associated with increased levels of hepatic enzymes, indicating that PM2.5 and O3 exposure may contribute to hepatocellular injury in PWHA. Our study also found that PWHA may be more vulnerable to air pollution than the general population. These findings highlight the relationship between air pollutants and liver function in PWHA, providing a scientific basis for the implementation of measures to protect susceptible populations from the adverse effects of air pollution. A reduction in the burning of fossil fuels and reduced exposure to air pollutants may be effective hazard reduction approaches.
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Affiliation(s)
- Hongfei Ma
- Wuhan Center for Disease Control and Prevention, 288# Machang Road, Wuhan 430024, China
| | - Qian Zhang
- Qingshan District Center for Disease Control and Prevention, 4# Yangang Road, Wuhan 430070, China
| | - Wei Liang
- Department of Global Health, School of Public Health, Wuhan University, 115# Donghu Road, Wuhan 430071, China
| | - Aojing Han
- Department of Global Health, School of Public Health, Wuhan University, 115# Donghu Road, Wuhan 430071, China
| | - Nianhua Xie
- Wuhan Center for Disease Control and Prevention, 288# Machang Road, Wuhan 430024, China
| | - Hao Xiang
- Department of Global Health, School of Public Health, Wuhan University, 115# Donghu Road, Wuhan 430071, China
| | - Xia Wang
- Wuhan Center for Disease Control and Prevention, 288# Machang Road, Wuhan 430024, China
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Zhang W, Ruan L. Recent advances in poor HIV immune reconstitution: what will the future look like? Front Microbiol 2023; 14:1236460. [PMID: 37608956 PMCID: PMC10440441 DOI: 10.3389/fmicb.2023.1236460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/24/2023] [Indexed: 08/24/2023] Open
Abstract
Combination antiretroviral therapy has demonstrated proved effectiveness in suppressing viral replication and significantly recovering CD4+ T cell count in HIV type-1 (HIV-1)-infected patients, contributing to a dramatic reduction in AIDS morbidity and mortality. However, the factors affecting immune reconstitution are extremely complex. Demographic factors, co-infection, baseline CD4 cell level, abnormal immune activation, and cytokine dysregulation may all affect immune reconstitution. According to report, 10-40% of HIV-1-infected patients fail to restore the normalization of CD4+ T cell count and function. They are referred to as immunological non-responders (INRs) who fail to achieve complete immune reconstitution and have a higher mortality rate and higher risk of developing other non-AIDS diseases compared with those who achieve complete immune reconstitution. Heretofore, the mechanisms underlying incomplete immune reconstitution in HIV remain elusive, and INRs are not effectively treated or mitigated. This review discusses the recent progress of mechanisms and factors responsible for incomplete immune reconstitution in AIDS and summarizes the corresponding therapeutic strategies according to different mechanisms to improve the individual therapy.
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Affiliation(s)
| | - Lianguo Ruan
- Department of Infectious Diseases, Wuhan Jinyintan Hospital, Tongji Medical College of Huazhong University of Science and Technology, Hubei Clinical Research Center for Infectious Diseases, Wuhan Research Center for Communicable Disease Diagnosis and Treatment, Chinese Academy of Medical Sciences, Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology and Wuhan Jinyintan Hospital, Chinese Academy of Sciences, Wuhan, Hubei, China
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de Moraes L, Santos LA, Arruda LB, da Silva MDPP, Silva MDO, Silva JAG, Ramos A, dos Santos MB, Torres FG, Orge C, Teixeira AMDS, Vieira TS, Ramírez L, Soto M, Grassi MFR, de Siqueira IC, Costa DL, Costa CHN, Andrade BDB, Akrami K, de Oliveira CI, Boaventura VS, Barral-Netto M, Barral A, Vandamme AM, Van Weyenbergh J, Khouri R. High seroprevalence of Leishmania infantum is linked to immune activation in people with HIV: a two-stage cross-sectional study in Bahia, Brazil. Front Microbiol 2023; 14:1221682. [PMID: 37601355 PMCID: PMC10436095 DOI: 10.3389/fmicb.2023.1221682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 06/28/2023] [Indexed: 08/22/2023] Open
Abstract
Visceral leishmaniasis is an opportunistic disease in HIV-1 infected individuals, unrecognized as a determining factor for AIDS diagnosis. The growing geographical overlap of HIV-1 and Leishmania infections is an emerging challenge worldwide, as co-infection increases morbidity and mortality for both infections. Here, we determined the prevalence of people living with HIV (PWH) with a previous or ongoing infection by Leishmania infantum and investigated the virological and immunological factors associated with co-infection. We adopted a two-stage cross-sectional cohort (CSC) design (CSC-I, n = 5,346 and CSC-II, n = 317) of treatment-naïve HIV-1-infected individuals in Bahia, Brazil. In CSC-I, samples collected between 1998 and 2013 were used for serological screening for leishmaniasis by an in-house Enzyme-Linked Immunosorbent Assay (ELISA) with SLA (Soluble Leishmania infantum Antigen), resulting in a prevalence of previous or ongoing infection of 16.27%. Next, 317 PWH were prospectively recruited from July 2014 to December 2015 with the collection of sociodemographic and clinical data. Serological validation by two different immunoassays confirmed a prevalence of 15.46 and 8.20% by anti-SLA, and anti-HSP70 serology, respectively, whereas 4.73% were double-positive (DP). Stratification of these 317 individuals in DP and double-negative (DN) revealed a significant reduction of CD4+ counts and CD4+/CD8+ ratios and a tendency of increased viral load in the DP group, as compared to DN. No statistical differences in HIV-1 subtype distribution were observed between the two groups. However, we found a significant increase of CXCL10 (p = 0.0076) and a tendency of increased CXCL9 (p = 0.061) in individuals with DP serology, demonstrating intensified immune activation in this group. These findings were corroborated at the transcriptome level in independent Leishmania- and HIV-1-infected cohorts (Swiss HIV Cohort and Piaui Northeast Brazil Cohort), indicating that CXCL10 transcripts are shared by the IFN-dominated immune activation gene signatures of both pathogens and positively correlated to viral load in untreated PWH. This study demonstrated a high prevalence of PWH with L. infantum seropositivity in Bahia, Brazil, linked to IFN-mediated immune activation and a significant decrease in CD4+ levels. Our results highlight the urgent need to increase awareness and define public health strategies for the management and prevention of HIV-1 and L. infantum co-infection.
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Affiliation(s)
- Laise de Moraes
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Luciane Amorim Santos
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | - Liã Bárbara Arruda
- Centre for Clinical Microbiology, Division of Infection & Immunity, University College London, London, United Kingdom
| | | | - Márcio de Oliveira Silva
- Centro Estadual Especializado em Diagnóstico, Assistência e Pesquisa, Secretaria de Saúde do Estado da Bahia, Salvador, Brazil
| | - José Adriano Góes Silva
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Centro Estadual Especializado em Diagnóstico, Assistência e Pesquisa, Secretaria de Saúde do Estado da Bahia, Salvador, Brazil
| | - André Ramos
- Centro Estadual Especializado em Diagnóstico, Assistência e Pesquisa, Secretaria de Saúde do Estado da Bahia, Salvador, Brazil
| | | | | | - Cibele Orge
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | | | | | - Laura Ramírez
- Departamento de Biología Molecular, Facultad de Ciencias, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
| | - Manuel Soto
- Departamento de Biología Molecular, Facultad de Ciencias, Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
| | - Maria Fernanda Rios Grassi
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | | | - Dorcas Lamounier Costa
- Laboratório de Leishmanioses, Instituto de Doenças Tropicais Natan Portella, Universidade Federal do Piauí, Teresina, Brazil
| | - Carlos Henrique Nery Costa
- Laboratório de Leishmanioses, Instituto de Doenças Tropicais Natan Portella, Universidade Federal do Piauí, Teresina, Brazil
| | - Bruno de Bezerril Andrade
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | - Kevan Akrami
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Camila Indiani de Oliveira
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | - Viviane Sampaio Boaventura
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Hospital Santa Izabel, Salvador, Brazil
| | - Manoel Barral-Netto
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Aldina Barral
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
| | - Anne-Mieke Vandamme
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Clinical and Epidemiological Virology, Leuven, Belgium
- Center for Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Johan Van Weyenbergh
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Clinical and Epidemiological Virology, Leuven, Belgium
| | - Ricardo Khouri
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Clinical and Epidemiological Virology, Leuven, Belgium
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Kinoo SM, Naidoo P, Singh B, Chuturgoon A, Nagiah S. Human Hepatocyte Nuclear Factors (HNF1 and LXRb) Regulate CYP7A1 in HIV-Infected Black South African Women with Gallstone Disease: A Preliminary Study. Life (Basel) 2023; 13:life13020273. [PMID: 36836631 PMCID: PMC9968087 DOI: 10.3390/life13020273] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/20/2023] Open
Abstract
Female sex, high estrogen levels, aging, obesity, and dyslipidemia are some of the risk factors associated with gallstone formation. HIV-infected patients on combination antiretroviral therapy (cART) are more prone to hypercholesterolemia. Bile acid synthesis is initiated by cholesterol 7-alpha hydroxylase (CYP7A1) and regulated by hepatocyte nuclear factors (HNF1α, HNF4α, and LXRb). The aim of this study was to evaluate the expression of HNF1α, HNF4α, LXRb, and miRNAs (HNF4α specific: miR-194-5p and miR-122*_1) that regulate CYP7A1 transcription in HIV-infected Black South African women on cART and presenting with gallstones relative to HIV-negative patients with gallstone disease. Females (n = 96) presenting with gallstone disease were stratified based on HIV status. The gene expression of CYP7A1, HNF1α, HNF4α, LXRb, miR-194-5p, and miR-122*_1 was determined using RT-qPCR. Messenger RNA and miRNA levels were reported as fold change expressed as 2-ΔΔCt (RQ min; RQ max). Fold changes >2 and <0.5 were considered significant. HIV-infected females were older in age (p = 0.0267) and displayed higher low-density lipoprotein cholesterol (LDL-c) (p = 0.0419), CYP7A1 [2.078-fold (RQ min: 1.278; RQ max: 3.381)], LXRb [2.595-fold (RQ min: 2.001; RQ max: 3.000)], and HNF1α [3.428 (RQ min: 1.806; RQ max: 6.507] levels. HNF4α [0.642-fold (RQ min: 0.266; RQ max: 1.55)], miR-194-5p [0.527-fold (RQ min: 0.37; RQ max: 0.752)], and miR-122*_1 [0.595-fold (RQ min: 0.332; RQ max: 1.066)] levels were lower in HIV-infected females. In conclusion, HIV-infected women with gallstone disease displayed higher LDL-c levels and increased bile acid synthesis, which was evidenced by the elevated expression of CYP7A1, HNF1α, and LXRb. This could have been further influenced by cART and aging.
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Affiliation(s)
- Suman Mewa Kinoo
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, College of Health Science, University of KwaZulu Natal, Glenwood, Durban 4041, South Africa
- Discipline of General Surgery, School of Clinical Medicine, College of Health Science, University of KwaZulu Natal, Umbilo, Durban 4001, South Africa
| | - Pragalathan Naidoo
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, College of Health Science, University of KwaZulu Natal, Glenwood, Durban 4041, South Africa
| | - Bhugwan Singh
- Discipline of General Surgery, School of Clinical Medicine, College of Health Science, University of KwaZulu Natal, Umbilo, Durban 4001, South Africa
| | - Anil Chuturgoon
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, College of Health Science, University of KwaZulu Natal, Glenwood, Durban 4041, South Africa
- Correspondence: (A.C.); (S.N.)
| | - Savania Nagiah
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, College of Health Science, University of KwaZulu Natal, Glenwood, Durban 4041, South Africa
- Department of Human Biology, Medical School, Faculty of Health Sciences, Nelson Mandela University, Missionvale, Port Elizabeth 6065, South Africa
- Correspondence: (A.C.); (S.N.)
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Lu Y, Zhang MX, Pang W, Song TZ, Zheng HY, Tian RR, Zheng YT. Transcription Factor ZNF683 Inhibits SIV/HIV Replication through Regulating IFNγ Secretion of CD8+ T Cells. Viruses 2022; 14:v14040719. [PMID: 35458449 PMCID: PMC9030044 DOI: 10.3390/v14040719] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/15/2022] [Accepted: 03/26/2022] [Indexed: 11/16/2022] Open
Abstract
Pulmonary microbial invasion frequently occurs during AIDS progression in HIV patients. Inflammatory cytokines and other immunoregulatory factors play important roles in this process. We previously established an AIDS model of SIVmac239 infection in northern pig-tailed macaques (NPMs), which were divided into rapid progressor (RP) and slow progressor (SP) groups according to their AIDS progression rates. In this study, we performed 16S rDNA and transcriptome sequencing of the lungs to reveal the molecular mechanism underlying the difference in progression rate between the RPs and SPs. We found that microbial invasion in the RP group was distinct from that in the SP group, showing marker flora of the Family XI, Enterococcus and Ezakiella, and more Lactobacilli. Through pulmonary transcriptome analysis, we found that the transcription factor ZNF683 had higher expression in the SP group than in the RP group. In subsequent functional experiments, we found that ZNF683 increased the proliferation and IFNγ secretion ability of CD8+ T cells, thus decreasing SIV or HIV replication, which may be related to AIDS progression in SIVmac239-infected NPMs. This study helps elucidate the various complexities of disease progression in HIV-1-infected individuals.
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Affiliation(s)
- Ying Lu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Ming-Xu Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
| | - Wei Pang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
| | - Tian-Zhang Song
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Hong-Yi Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
| | - Ren-Rong Tian
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
| | - Yong-Tang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China; (Y.L.); (M.-X.Z.); (W.P.); (T.-Z.S.); (H.-Y.Z.); (R.-R.T.)
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
- Correspondence: ; Tel.: +86-871-65295684
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9
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Jani C, Al Omari O, Singh H, Walker A, Patel K, Mouchati C, Radwan A, Pandit Z, Hanbury G, Crowley C, Marshall DC, Goodall R, Shalhoub J, Salciccioli JD, Tapan U. Trends of HIV-Related Cancer Mortality between 2001 and 2018: An Observational Analysis. Trop Med Infect Dis 2021; 6:tropicalmed6040213. [PMID: 34941669 PMCID: PMC8707967 DOI: 10.3390/tropicalmed6040213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/06/2021] [Accepted: 12/17/2021] [Indexed: 12/16/2022] Open
Abstract
The burden of AIDS-defining cancers has remained relatively steady for the past two decades, whilst the burden of non-AIDS-defining cancer has increased. Here, we conduct a study to describe mortality trends attributed to HIV-associated cancers in 31 countries. We extracted HIV-related cancer mortality data from 2001 to 2018 from the World Health Organization Mortality Database. We computed age-standardized death rates (ASDRs) per 100,000 population using the World Standard Population. Data were visualized using Locally Weighted Scatterplot Smoothing (LOWESS). Data for females were available for 25 countries. Overall, there has been a decrease in mortality attributed to HIV-associated cancers among most of the countries. In total, 18 out of 31 countries (58.0%) and 14 out of 25 countries (56.0%) showed decreases in male and female mortality, respectively. An increasing mortality trend was observed in many developing countries, such as Malaysia and Thailand, and some developed countries, such as the United Kingdom. Malaysia had the greatest increase in male mortality (+495.0%), and Canada had the greatest decrease (−88.5%). Thailand had the greatest increase in female mortality (+540.0%), and Germany had the greatest decrease (−86.0%). At the endpoint year, South Africa had the highest ASDRs for both males (16.8/100,000) and females (19.2/100,000). The lowest was in Japan for males (0.07/100,000) and Egypt for females (0.028/100,000).
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Affiliation(s)
- Chinmay Jani
- Department of Medicine, Mount Auburn Hospital/Beth Israel Lahey Health, Cambridge, MA 02138, USA; (O.A.O.); (A.W.); (Z.P.)
- Harvard Medical School, Boston, MA 02115, USA;
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Correspondence: ; Tel.: +1-857-284-3042
| | - Omar Al Omari
- Department of Medicine, Mount Auburn Hospital/Beth Israel Lahey Health, Cambridge, MA 02138, USA; (O.A.O.); (A.W.); (Z.P.)
- Harvard Medical School, Boston, MA 02115, USA;
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
| | - Harpreet Singh
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Division of Pulmonary and Critical Care Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Alexander Walker
- Department of Medicine, Mount Auburn Hospital/Beth Israel Lahey Health, Cambridge, MA 02138, USA; (O.A.O.); (A.W.); (Z.P.)
- Harvard Medical School, Boston, MA 02115, USA;
| | - Kripa Patel
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Smt NHL Municipal Medical College, Ahmedabad 380006, Gujarat, India
| | - Christian Mouchati
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA
- Department of Pediatrics, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA
| | - Amr Radwan
- Department of Internal Medicine, Section of Hematology and Oncology, Boston Medical Center, Boston, MA 02118, USA; (A.R.); (U.T.)
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
| | - Zuha Pandit
- Department of Medicine, Mount Auburn Hospital/Beth Israel Lahey Health, Cambridge, MA 02138, USA; (O.A.O.); (A.W.); (Z.P.)
- Harvard Medical School, Boston, MA 02115, USA;
| | - Georgina Hanbury
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Imperial College Healthcare NHS Trust, London W2 1NY, UK
| | - Conor Crowley
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Division of Pulmonary and Critical Care, Lahey Hospital, Burlington, MA 01805, USA
| | - Dominic C. Marshall
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK
| | - Richard Goodall
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Department of Surgery and Cancer, Imperial College London, London SW7 2AZ, UK
| | - Joseph Shalhoub
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Department of Surgery and Cancer, Imperial College London, London SW7 2AZ, UK
- Imperial Vascular Unit, Imperial College Healthcare NHS Trust, London W12 0HS, UK
| | - Justin D. Salciccioli
- Harvard Medical School, Boston, MA 02115, USA;
- MDR Collaboration, London W2 1NY, UK; (H.S.); (K.P.); (C.M.); (G.H.); (C.C.); (D.C.M.); (R.G.); (J.S.)
- Department of Pulmonary and Critical Care, Brigham and Women’s Hospital, Boston, MA 02115, USA
| | - Umit Tapan
- Department of Internal Medicine, Section of Hematology and Oncology, Boston Medical Center, Boston, MA 02118, USA; (A.R.); (U.T.)
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
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10
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Wang D, Jiang Y, Song Y, Zeng Y, Li C, Wang X, Liu Y, Xiao J, Kong Y, Zhao H. Altered T-Cell Subsets are Associated with Dysregulated Cytokine Secretion of CD4 + T Cells During HIV Infection. J Inflamm Res 2021; 14:5149-5163. [PMID: 34675594 PMCID: PMC8504938 DOI: 10.2147/jir.s333902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/27/2021] [Indexed: 11/23/2022] Open
Abstract
Background CD4+ T cells play a critical role in the regulation of immunopathogenesis in HIV infection. Previous studies have shown contradictory results of the CD4+ T-cell responses in people living with HIV (PLHIV). Methods A cross-sectional study was performed on 40 healthy controls, 134 ART-naïve PLHIV, and 34 individuals who experienced 3-year ART with low baseline CD4 count from 4 August 2016 to 23 January 2019. We determined the frequencies of CD4+ T-cell subsets and described the cytokine secretion pattern of total and subsets of CD4+ T cells in these individuals. Results We found that CD4+ T cells in PLHIV displayed enhanced secretion of pro-inflammation cytokines and polyfunctionality due to HIV disease progression (r = -0.282, P = 0.0035 for IFN-γ; r = -0.412, P = 0.0002 for TNF-α; r = -0.243, P < 0.0001 for GM-CSF; r = -0.252, P = 0.0093 for IFN-γ+ TNF-α+ cells). However, the altered T-cell subsets, as presented by the loss of naïve cells and expansion of memory/effector population in PLHIV, were associated with discordant results in total and subsets of CD4+ T cells. As major cytokine-producing T subsets, effector/memory CD4 subsets showed impaired cytokine production (P < 0.05). We further demonstrated that 3-year ART treatment could improve CD4 counts by increasing the pool of naïve T cells but could not restore cytokine secretion in CD4+ T-cell subsets (P < 0.05). Conclusion These data identified the impaired capacity of cytokine secretion in CD4+ T-cell subsets due to HIV disease progression, and the altered T-cell subsets were associated with pseudo-elevation of cytokine production in total CD4+ T cells. This study collectively suggested the importance of therapies that can preserve and/or enhance the function of CD4+ T cells in strategies of HIV remission.
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Affiliation(s)
- Di Wang
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yu Jiang
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yangzi Song
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yongqin Zeng
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Cuilin Li
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Xinyue Wang
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Ying Liu
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Jiang Xiao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Yaxian Kong
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Hongxin Zhao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
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11
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Osuna-Padilla IA, Rodríguez-Moguel NC, Aguilar-Vargas A, Rodríguez-Aguirre E, Briceño O, Ávila-Ríos S. Normal weight obesity is associated with hypercholesterolemia and low muscle mass in persons living with HIV on antiretroviral treatment. Nutrition 2021; 94:111515. [PMID: 34844155 DOI: 10.1016/j.nut.2021.111515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/22/2021] [Accepted: 10/05/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Normal weight obesity (NWO) is defined as a condition of normal body weight, but with high body fat percentage. Clinical and immunologic implications of NWO in persons living with HIV (PLHIV) remain unknown. The aim of this study was to examine NWO prevalence and its associations with metabolic and immunologic measurements in a cohort of PLHIV on antiretroviral treatment (ART). METHODS We enrolled 73 adult PLHIV on ART. Body composition was assessed by dual-energy x-ray absorptiometry. NWO was defined as body mass index 18.5 to 24.9 kg/m2 and body fat ≥25%. We determined triacylglycerols, total cholesterol, high-density lipoprotein, low-density lipoprotein, blood glucose, blood pressure, bone mineral density, inflammatory cytokines (interleukin [IL]-1β, tumor necrosis factor-α and IL-6) and CD4+ and CD8+ T-cell activation. RESULTS The prevalence of NWO was 49% (36 of 73). Participants with NWO showed lower CD4+ T-cell percentage (25 versus 27%, P = 0.03), lower CD4/CD8 ratio (0.62 versus 0.82, P = 0.02), lower muscle mass (6.84 versus 7.11 kg/m2, P = 0.01) and higher prevalence of hypercholesterolemia (26% versus 6%, P = 0.03) than individuals with normal body composition. No differences in inflammation/activation markers were observed between groups (P > 0.05 in all cases). CONCLUSION NWO was frequent in a cohort of Mexican PLHIV on ART and was associated with lower muscle mass, hypercholesterolemia, lower CD4+ T-cell percentage, and lower CD4/CD8 ratio. The incorporation of body fat measurements in the regular physical examination of PLHIV could contribute to early identification of the NWO condition and lead to better management of possible long-term morbidity.
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Affiliation(s)
- Ivan A Osuna-Padilla
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Nadia C Rodríguez-Moguel
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Adriana Aguilar-Vargas
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Edna Rodríguez-Aguirre
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Olivia Briceño
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico.
| | - Santiago Ávila-Ríos
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
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12
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Acute HIV-1 and SARS-CoV-2 Infections Share Slan+ Monocyte Depletion-Evidence from an Hyperacute HIV-1 Case Report. Viruses 2021; 13:v13091805. [PMID: 34578386 PMCID: PMC8473247 DOI: 10.3390/v13091805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/02/2021] [Accepted: 09/06/2021] [Indexed: 11/16/2022] Open
Abstract
Monocytes are key modulators in acute viral infections, determining both inflammation and development of specific B- and T-cell responses. Recently, these cells were shown to be associated to different SARS-CoV-2 infection outcome. However, their role in acute HIV-1 infection remains unclear. We had the opportunity to evaluate the mononuclear cell compartment in an early hyper-acute HIV-1 patient in comparison with an untreated chronic HIV-1 and a cohort of SARS-CoV-2 infected patients, by high dimensional flow cytometry using an unsupervised approach. A distinct polarization of the monocyte phenotype was observed in the two viral infections, with maintenance of pro-inflammatory M1-like profile in HIV-1, in contrast to the M2-like immunosuppressive shift in SARS-CoV-2. Noticeably, both acute infections had reduced CD14low/−CD16+ non-classical monocytes, with depletion of the population expressing Slan (6-sulfo LacNac), which is thought to contribute to immune surveillance through pro-inflammatory properties. This depletion indicates a potential role of these cells in acute viral infection, which has not previously been explored. The inflammatory state accompanied by the depletion of Slan+ monocytes may provide new insights on the critical events that determine the rate of viral set-point in acute HIV-1 infection and subsequent impact on transmission and reservoir establishment.
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13
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Chudnovets A, Liu J, Narasimhan H, Liu Y, Burd I. Role of Inflammation in Virus Pathogenesis during Pregnancy. J Virol 2020; 95:e01381-19. [PMID: 33115865 PMCID: PMC7944452 DOI: 10.1128/jvi.01381-19] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Viral infections during pregnancy lead to a spectrum of maternal and fetal outcomes, ranging from asymptomatic disease to more critical conditions presenting with severe maternal morbidity, stillbirth, preterm birth, intrauterine growth restriction, and fetal congenital anomalies, either apparent at birth or later in life. In this article, we review the pathogenesis of several viral infections that are particularly relevant in the context of pregnancy and intrauterine inflammation. Understanding the diverse mechanisms employed by viral pathogens as well as the repertoire of immune responses induced in the mother may help to establish novel therapeutic options to attenuate changes in the maternal-fetal interface and prevent adverse pregnancy outcomes.
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Affiliation(s)
- Anna Chudnovets
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jin Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Harish Narasimhan
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Yang Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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14
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Orta-Resendiz A, Viveros-Rogel M, Fuentes-Romero LL, Vergara-Mendoza M, Romero-Rodriguez DP, Muñoz-Lopez M, Zancatl-Diaz ML, Vidal-Laurencio EY, Rodriguez-Diaz RA, Soto-Ramirez LE. Persistent high levels of immune activation and their correlation with the HIV-1 proviral DNA and 2-LTR circles loads, in a cohort of Mexican individuals following long-term and fully suppressive treatment. Int J Infect Dis 2020; 100:184-192. [PMID: 32829045 DOI: 10.1016/j.ijid.2020.08.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/11/2020] [Accepted: 08/16/2020] [Indexed: 10/23/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate the correlation between the HIV-1 reservoir and the levels of immune activation in chronic patients under fully suppressive cART. METHODS We quantified the HIV proviral DNA and 2-LTR circles loads from PBMCs, the levels of CD38+ and Ki-67+ T-cells, and the levels of IL-7 in a cohort of patients with more than 5 years of ART at enrollment and after 1 year. RESULTS In 29 participants with a median of 8 years (IQR, 6.9-9.4) under suppressive cART we found higher levels of CD8+ CD38+ T-cells after 1-year (P = .000). There was a non-statistically significant poor correlation between the levels of immune activation and the proviral DNA of CD4+ and CD8+ T-cells. Ki-67+ T-cells declined without significant differences, and there was no significant correlation with the proportion of CD38+. IL-7 decreased at the follow-up observation (P = .094), but there was no correlation with the levels of CD38+ and Ki-67+ T-cells. CONCLUSIONS We found a weak but non-statistically significant correlation of the levels of T-cell activation with the proviral DNA and 2-LTR circles. This suggests the likely occurrence of further mechanisms driving chronic versus early immune activation other than viral replication by itself in chronic patients.
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Affiliation(s)
- Aurelio Orta-Resendiz
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
| | - Monica Viveros-Rogel
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Luis L Fuentes-Romero
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Moises Vergara-Mendoza
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Damaris P Romero-Rodriguez
- Flow Cytometry Core Facility, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Monica Muñoz-Lopez
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Martha L Zancatl-Diaz
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Elsa Y Vidal-Laurencio
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Roberto A Rodriguez-Diaz
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Luis E Soto-Ramirez
- Molecular Virology Unit, Infectious Diseases Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
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15
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Badura R, Foxall RB, Ligeiro D, Rocha M, Godinho-Santos A, Trombetta AC, Sousa AE. Early ART in Acute HIV-1 Infection: Impact on the B-Cell Compartment. Front Cell Infect Microbiol 2020; 10:347. [PMID: 32766164 PMCID: PMC7378391 DOI: 10.3389/fcimb.2020.00347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/05/2020] [Indexed: 12/26/2022] Open
Abstract
HIV-1 infection induces B cell defects, not fully recovered upon antiretroviral therapy (ART). Acute infection and the early start of ART provide unique settings to address the impact of HIV on the B cell compartment. We took advantage of a cohort of 21 seroconverters, grouped according to the presence of severe manifestations likely mediated by antibodies or immune complexes, such as Guillain-Barré syndrome and autoimmune thrombocytopenic purpura, with a follow-up of 8 weeks upon effective ART. We combined B and T cell phenotyping with serum immunoglobulin level measurement and quantification of sj-KRECs and ΔB to estimate bone marrow output and peripheral proliferative history of B cells, respectively. We observed marked B cell disturbances, notably a significant expansion of cells expressing low levels of CD21, in parallel with markers of both impaired bone marrow output and increased peripheral B cell proliferation. This B cell dysregulation is likely to contribute to the severe immune-mediated conditions, as attested by the higher serum IgG and the reduced levels of sj-KRECs with increased ΔB in these individuals as compared to those patients with mild disease. Nevertheless, upon starting ART, the dynamic of B cell recovery was not distinct in the two groups, featuring both persistent alterations by week 8. Overall, we showed for the first time that acute HIV-1 infection is associated with decreased bone marrow B cell output assessed by sj-KRECs. Our study emphasizes the need to intervene in both bone marrow and peripheral responses to facilitate B cell recovery during acute HIV-1 infection.
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Affiliation(s)
- Robert Badura
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.,Serviço de Doenças Infecciosas, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
| | - Russell B Foxall
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Dario Ligeiro
- Centro de Sangue e Transplantação de Lisboa, Instituto Português de Sangue e Transplantação, IP, Lisbon, Portugal
| | - Miguel Rocha
- Grupo de Ativistas em Tratamentos, Community Based Center for HIV and STD, CheckpointLX, Lisbon, Portugal
| | - Ana Godinho-Santos
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Amelia C Trombetta
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Ana E Sousa
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
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16
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Tsuyuki K, Stockman JK, Knauth D, J Catabay C, He F, Al-Alusi NA, Pilecco FB, Jain S, Barbosa RM. Typologies of violence against women in Brazil: A latent class analysis of how violence and HIV intersect. Glob Public Health 2020; 15:1639-1654. [PMID: 32515274 DOI: 10.1080/17441692.2020.1767675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We address the limited understanding around the overlap between violence and HIV in Brazil. Data was from two clinic-based samples of HIV-positive (n = 1534) and HIV-negative women (n = 1589) in São Paulo and Porto Alegre. We conducted latent class analysis and identified violence typologies by type of violence, life course timing, frequency, and perpetrator, stratified by city and HIV-status. Overall, HIV-positive women experienced more lifetime physical and sexual violence than HIV-negative women. Twelve unique violence latent classes were identified. In São Paulo, HIV-positive women were likely to have endured physical violence several times (Conditional Probability [CP]: 0.80) by an intimate partner (CP: 0.85), and sexual violence several times (CP: 0.46) by an intimate partner (CP: 0.62). In Porto Alegre, HIV-positive women endured physical violence several times (CP: 0.80) by an intimate partner (CP: 0.70) during childhood/adolescence (CP: 0.48), and sexual violence several times (CP: 0.54) by an intimate partner (CP: 0.60). Findings inform interventions to educate around gender equity, violence, and the health effects of violence including HIV, integrate HIV and violence services, and improve the provision of bio-medical HIV prevention among HIV-negative women who experience violence.
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Affiliation(s)
- Kiyomi Tsuyuki
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Jamila K Stockman
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Daniela Knauth
- Department of Social Medicine, University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Christina J Catabay
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Feng He
- Division of Biostatistics and Bioinformatics, Department of Family Medicine and Public Health, University of California, San Diego, La Jolla, CA, USA
| | - Noor A Al-Alusi
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Flavia Bulegon Pilecco
- Department of Preventive and Social Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sonia Jain
- Division of Biostatistics and Bioinformatics, Department of Family Medicine and Public Health, University of California, San Diego, La Jolla, CA, USA
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Dhanjal NI, Sharma S, Skalny AV, Skalnaya MG, Ajsuvakova OP, Tinkov AA, Zhang F, Guo X, Prabhu KS, Tejo Prakash N. Selenium-rich maize modulates the expression of prostaglandin genes in lipopolysaccharide-stimulated RAW264.7 macrophages. Food Funct 2019; 10:2839-2846. [PMID: 31062009 DOI: 10.1039/c9fo00186g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Cell signaling is necessary for the organs to co-ordinate with the whole body and it includes response to external stimuli, inflammation, hormonal secretions and other various metabolic functions. In the present study, we have focused on the inflammatory signals modulated by the reactive oxygen and nitrogen species (RONS). Under homeostatic conditions, these species turn on the COX-1-dependent arachidonic acid (AA) pathway towards the release of anti-inflammatory enzymes. However, the excess release of these ions induces negative effects in the form of inflammation by turning on the COX-2-dependent AA pathway to release pro-inflammatory enzymes. In the present study, we observed the shunting of the COX-2-dependent AA pathway towards the release of anti-inflammatory enzymes with the supplementation of organic dietary selenium in the form of seleniferous maize extracts. We observed that 500 nM selenium concentration in Se-maize extracts downregulated the COX-2 and mPGES-1 expressions by 3.8- and 3.2-fold and upregulated the GPx-1 and H-PGDS expressions by 5.0- and 5.4-fold, respectively. To facilitate more availability of Se from the dietary matrices, Se-maize extracts were incubated with rMETase. It was observed that the enzyme-treated cells increased the downregulation of COX-2 and mPGES-1 expressions by 24.8- and 21.0-fold and the upregulation of GPx-1 and H-PGDS expressions by 13.2- and 16.5-fold, respectively.
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Tsuyuki K, Cimino AN, Holliday CN, Campbell JC, Al-Alusi NA, Stockman JK. Physiological Changes from Violence-Induced Stress and Trauma Enhance HIV Susceptibility Among Women. Curr HIV/AIDS Rep 2019; 16:57-65. [PMID: 30762216 PMCID: PMC6420839 DOI: 10.1007/s11904-019-00435-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW This theoretical review identifies physiological mechanisms by which violence against women (VAW) may increase women's susceptibility to HIV through trauma, stress, and immune dysfunction. RECENT FINDINGS Research documents systemic and local immune responses are related to stress and trauma from abuse across the life course (i.e., childhood, IPV, adulthood re-victimization). Findings are interpreted within a theoretical framework grounded in the Social Stress Theory and the concept of toxic stress, and highlight the current state of the science connecting: (1) VAW to the physiological stress response and immune dysfunction, and (2) the physiological stress response and inflammation to HIV susceptibility and infection in the female reproductive tract. Despite a dearth of research in human subjects, evidence suggests that VAW plays a significant role in creating a physiological environment conducive to HIV infection. We conclude with a discussion of promising future steps for this line of research.
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Affiliation(s)
- Kiyomi Tsuyuki
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, 9500 Gilman Drive, MC 0507, La Jolla, CA, 92093-0507, USA.
| | - Andrea N Cimino
- Department of Community-Public Health, Johns Hopkins University School of Nursing, Baltimore, MD, USA
| | - Charvonne N Holliday
- Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Jacquelyn C Campbell
- Department of Community-Public Health, Johns Hopkins University School of Nursing, Baltimore, MD, USA
| | - Noor A Al-Alusi
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, 9500 Gilman Drive, MC 0507, La Jolla, CA, 92093-0507, USA
| | - Jamila K Stockman
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California, San Diego, 9500 Gilman Drive, MC 0507, La Jolla, CA, 92093-0507, USA
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Hoffman M, Ipp H, Phatlhane DV, Erasmus RT, Zemlin AE. E-Selectin and markers of HIV disease severity, inflammation and coagulation in HIV-infected treatment-naïve individuals. Afr Health Sci 2018; 18:1066-1075. [PMID: 30766573 PMCID: PMC6354867 DOI: 10.4314/ahs.v18i4.28] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background E-selectin has been shown to play a role in atherosclerosis and to be increased in HIV-infected individuals due to chronic immune activation. There is a paucity of studies on E-selectin in HIV-infected treatment-naïve individuals. Objectives This study aimed to determine whether E-selectin levels were increased in HIV-infected treatment-naïve individuals and whether these correlated with markers of disease severity, inflammation and coagulation to determine if this population is at risk for cardiovascular disease (CVD). Methods E-selectin levels were determined in 114 HIV-infected treatment-naive and 66 HIV-negative individuals, compared between groups and correlated with markers of disease severity, inflammation and coagulation. Results There were statistically significant differences (p<0.01) in levels of WCC, CD4+ count, %CD38/8, albumin, IgG, hsCRP and D-dimer between groups and no statistically significant differences in E-selectin (p=0.84) and fibrinogen (p=0.65) levels. E-selectin correlated with age (p=0.02) and gender (p=0.01). Conclusion E-selectin was a poor marker in this setting. There was no correlation with any of the markers of disease severity, inflammation and coagulation. E-selectin is most likely raised in an acute inflammatory setting, rather than chronic stage of HIV-infection. We recommend that other markers be utilized to identify patients at increased risk of CVD; as these were significantly increased untreated in individuals.
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Affiliation(s)
- Madelein Hoffman
- Division of Chemical Pathology, National Health Laboratory Service (NHLS) and Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
| | - Hayley Ipp
- Division of Haematology, National Health Laboratory Service (NHLS) and Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
| | - Dineo V Phatlhane
- Division of Chemical Pathology, National Health Laboratory Service (NHLS) and Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
| | - Rajiv T Erasmus
- Division of Chemical Pathology, National Health Laboratory Service (NHLS) and Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
| | - Annalise E Zemlin
- Division of Chemical Pathology, National Health Laboratory Service (NHLS) and Stellenbosch University, Tygerberg Hospital, Cape Town, South Africa
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Abstract
Human immunodeficiency virus (HIV)-associated neurocognitive disorders (HAND) remain a common end-organ manifestation of viral infection. Subclinical and mild symptoms lead to neurocognitive and behavioral abnormalities. These are associated, in part, with viral penetrance and persistence in the central nervous system. Infections of peripheral blood monocytes, macrophages, and microglia are the primary drivers of neuroinflammation and neuronal impairments. While current antiretroviral therapy (ART) has reduced the incidence of HIV-associated dementia, milder forms of HAND continue. Depression, comorbid conditions such as infectious liver disease, drugs of abuse, antiretroviral drugs themselves, age-related neurodegenerative diseases, gastrointestinal maladies, and concurrent social and economic issues can make accurate diagnosis of HAND challenging. Increased life expectancy as a result of ART clearly creates this variety of comorbid conditions that often blur the link between the virus and disease. With the discovery of novel biomarkers, neuropsychologic testing, and imaging techniques to better diagnose HAND, the emergence of brain-penetrant ART, adjunctive therapies, longer life expectancy, and better understanding of disease pathogenesis, disease elimination is perhaps a realistic possibility. This review focuses on HIV-associated disease pathobiology with an eye towards changing trends in the face of widespread availability of ART.
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Nanoformulated Antiretroviral Therapy Attenuates Brain Metabolic Oxidative Stress. Mol Neurobiol 2018; 56:2896-2907. [PMID: 30069830 PMCID: PMC6403019 DOI: 10.1007/s12035-018-1273-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/16/2018] [Indexed: 12/24/2022]
Abstract
Antiretroviral therapy (ART) restricts human immunodeficiency virus type one (HIV-1) replication and by so doing, improves the quality and longevity of life for infected people. Nonetheless, treatment can also lead to adverse clinical outcomes such as drug resistance and systemic adverse events. Both could be affected by long-acting slow effective release ART. Indeed, maintenance of sustained plasma drug levels, for weeks or months, after a single high-level dosing, could improve regimen adherence but, at the same time, affect systemic toxicities. Of these, the most troubling are those that affect the central nervous system (CNS). To address this, dolutegravir (Tivicay, DTG), a potent and durable HIV integrase inhibitor used effectively in combination ART was tested. Rodents were administered parenteral 45-mg/kg doses. DTG-associated changes in CNS homeostasis were assessed by measuring brain metabolic activities. After antiretroviral treatment, brain subregions were dissected and screened by mass spectrometry-based metabolomics. Metabolic drug-related dysregulation of energy and oxidative stress were readily observed within the cerebellum and frontal cortex following native drug administrations. Each was associated with alterations in neural homeostasis and depleted canonical oxidation protection pools that included glutathione and ascorbic acid. Surprisingly, the oxidative stress-related metabolites were completely attenuated when DTG was administered as nanoformulations. These data demonstrate the importance of formulation design in control of DTG or perhaps other antiretroviral drug-associated CNS events.
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Song TZ, Zhang MX, Xia YJ, Xiao Y, Pang W, Zheng YT. Parasites may exit immunocompromised northern pig-tailed macaques ( Macaca leonina) infected with SIVmac239. Zool Res 2018; 39:42-51. [PMID: 29511144 PMCID: PMC5869241 DOI: 10.24272/j.issn.2095-8137.2018.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/02/2018] [Indexed: 01/21/2023] Open
Abstract
Parasites can increase infection rates and pathogenicity in immunocompromised human immunodeficiency virus (HIV) patients. However, in vitro studies and epidemiological investigations also suggest that parasites might escape immunocompromised hosts during HIV infection. Due to the lack of direct evidence from animal experiments, the effects of parasitic infections on immunocompromised hosts remain unclear. Here, we detected 14 different parasites in six northern pig-tailed macaques (NPMs) before or at the 50th week of simian immunodeficiency virus (SIV) infection by ELISA. The NPMs all carried parasites before viral injection. At the 50th week after viral injection, the individuals with negative results in parasitic detection (i.e., 08247 and 08287) were characterized as the Parasites Exit (PE) group, with the other individuals (i.e., 09203, 09211, 10205, and 10225) characterized as the Parasites Remain (PR) group. Compared with the PR group, the NPMs in the PE group showed higher viral loads, lower CD4+ T cells counts, and lower CD4/CD8 rates. Additionally, the PE group had higher immune activation and immune exhaustion of both CD4+ and CD8+ T cells. Pathological observation showed greater injury to the liver, cecum, colon, spleen, and mesenteric lymph nodes in the PE group. This study showed more seriously compromised immunity in the PE group, strongly indicating that parasites might exit an immunocompromised host.
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Affiliation(s)
- Tian-Zhang Song
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ming-Xu Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
| | - Yu-Jie Xia
- Kunming Primate Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
| | - Yu Xiao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
| | - Wei Pang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
| | - Yong-Tang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China.
- Kunming Primate Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
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Abstract
As the HIV population continues to live longer as a result of antiretroviral therapy, liver-related mortality has become one of the leading causes of non-AIDS related death in this patient population. The liver possesses a remarkable regenerative capacity but undergoes complex biological changes in response to aging and inflammation that result in decreased cellular regeneration and a tipping of the scales towards fibrogenesis. Patients with HIV infection have serological evidence of ongoing inflammation, with elevations in some biomarkers persisting despite adequate virologic control. In addition, HIV-co-infected patients have markers of advanced age on liver biopsy and increased prevalence of fibrosis as compared to an age-matched HCV mono-infected cohort. In this review, we will discuss the biology of aging, age-related changes in the liver, and the relevant mechanisms by which HIV causes inflammation in the context of accelerated aging, fibrosis of the liver, and other viral co-infection.
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Affiliation(s)
- Austin W Chan
- Division of Infectious Diseases, Department of Medicine, Duke University School of Medicine, 315 Trent Dr, PO Box 102359, Durham, NC, 27710, USA.
| | - Yuval A Patel
- Division of Gastroenterology, Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Steve Choi
- Division of Gastroenterology, Durham VA Medical Center, Duke University School of Medicine, Durham, NC, USA
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Asiimwe SB, Fatch R, Patts G, Winter M, Lloyd-Travaglini C, Emenyonu N, Muyindike W, Kekibiina A, Blokhina E, Gnatienko N, Kruptisky E, Cheng DM, Samet JH, Hahn JA. Alcohol Types and HIV Disease Progression Among HIV-Infected Drinkers Not Yet on Antiretroviral Therapy in Russia and Uganda. AIDS Behav 2017; 21:204-215. [PMID: 28856539 DOI: 10.1007/s10461-017-1895-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In HIV-infected drinkers, alcohol types more likely to cause inflammation could plausibly increase the risk of HIV disease progression. We therefore assessed the association between alcohol type and plasma HIV RNA level (HIV viral load) among HIV-infected drinkers not on antiretroviral therapy (ART) in Russia and Uganda. We analyzed the data of participants from cohorts in Russia and Uganda and assessed their HIV viral load at enrollment by the alcohol type predominantly consumed. We defined predominant alcohol type as the alcohol type contributing >50% of total alcohol consumption in the 1 month (Russia) or 3 months (Uganda) prior to enrollment. Using multiple linear regression, we compared log10 HIV viral load by predominant alcohol type, controlling for age, gender, socioeconomic status, total number of standard drinks, frequency of drinking ≥6 drinks/occasion, and in Russia, history of injection drug use. Most participants (99.2% of 261 in Russia and 98.9% of 352 in Uganda) predominantly drank one alcohol type. In Russia, we did not find evidence for differences in viral load levels between drinkers of fortified wine (n = 5) or hard liquor (n = 49), compared to drinkers of beer/low-ethanol-content cocktails (n = 163); however, wine/high-ethanol-content cocktail drinkers (n = 42) had higher mean log10 viral load than beer/low-ethanol-content cocktail drinkers (β = 0.38, 95% CI 0.07-0.69; p = 0.02). In Uganda, we did not find evidence for differences in viral load levels between drinkers of locally-brewed beer (n = 41), commercially-distilled spirits (n = 38), or locally-distilled spirits (n = 43), compared to drinkers of commercially-made beer (n = 218); however, wine drinkers (n = 8) had lower mean log10 HIV viral load (β = -0.65, 95% CI -1.36 to 0.07, p = 0.08), although this did not reach statistical significance. Among HIV-infected drinkers not yet on ART in Russia and Uganda, we observed an association between the alcohol type predominantly consumed and the HIV viral load level in the Russia sample. These exploratory results suggest that, in addition to total number of drinks and drinking patterns, alcohol type might be a dimension of alcohol use that merits examination in studies of HIV and alcohol related outcomes.
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Affiliation(s)
- Stephen B Asiimwe
- Department of Medicine, Mbarara Regional Referral Hospital, Mbarara, Uganda.
- Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, 2nd floor, Mission Hall: Global Health and Clinical Sciences Building, San Francisco, CA, 94158, USA.
| | - Robin Fatch
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Gregory Patts
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
- School of Public Health, Data Coordinating Center, Boston University, Boston, MA, USA
| | - Michael Winter
- School of Public Health, Data Coordinating Center, Boston University, Boston, MA, USA
| | - Christine Lloyd-Travaglini
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
- School of Public Health, Data Coordinating Center, Boston University, Boston, MA, USA
| | - Nneka Emenyonu
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Winnie Muyindike
- Department of Medicine, Mbarara Regional Referral Hospital, Mbarara, Uganda
| | - Allen Kekibiina
- Department of Medicine, Mbarara Regional Referral Hospital, Mbarara, Uganda
| | - Elena Blokhina
- School of Public Health, Data Coordinating Center, Boston University, Boston, MA, USA
| | - Natalia Gnatienko
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
| | - Evgeny Kruptisky
- First St. Petersburg Pavlov State Medical University, St. Petersburg, Russia
- St. Petersburg Bekhterev Research Psychoneurological Institute, St. Petersburg, Russia
| | - Debbie M Cheng
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
| | - Jeffrey H Samet
- Department of Medicine, Section of General Internal Medicine, Clinical Addiction Research and Education Unit, Boston University School of Medicine/Boston Medical Center, Boston, MA, USA
- Department of Community Health Sciences, Boston University School of Public Health, Boston, MA, USA
| | - Judith A Hahn
- Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, 2nd floor, Mission Hall: Global Health and Clinical Sciences Building, San Francisco, CA, 94158, USA
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
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Kaspar MB, Sterling RK. Mechanisms of liver disease in patients infected with HIV. BMJ Open Gastroenterol 2017; 4:e000166. [PMID: 29119002 PMCID: PMC5663263 DOI: 10.1136/bmjgast-2017-000166] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/20/2017] [Accepted: 09/03/2017] [Indexed: 12/20/2022] Open
Abstract
Objective To describe the various mechanisms of liver disease in patients with HIV infection, and to link these mechanisms to disease states which may utilise them. Background Non-AIDS causes of morbidity and mortality are becoming increasingly common in patients chronically infected with HIV. In particular, liver-related diseases have risen to become one of the leading causes of non-AIDS-related death. A thorough understanding of the mechanisms driving the development of liver disease in these patients is essential when evaluating and caring for these patients. Methods The literature regarding mechanisms of liver disease by which different disease entities may cause hepatic injury and fibrosis was reviewed and synthesised. Results A number of discrete mechanisms of injury were identified, to include: oxidative stress, mitochondrial injury, lipotoxicity, immune-mediated injury, cytotoxicity, toxic metabolite accumulation, gut microbial translocation, systemic inflammation, senescence and nodular regenerative hyperplasia. Disease states may use any number of these mechanisms to exert their effect on the liver. Conclusions The mechanisms by which liver injury may occur in patients with HIV infection are numerous. Most disease states use multiple mechanisms to cause hepatic injury and fibrosis.
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Affiliation(s)
- Matthew B Kaspar
- Department of Internal Medicine, Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Richard K Sterling
- Department of Internal Medicine, Virginia Commonwealth University Medical Center, Richmond, Virginia, USA.,Section of Hepatology, Virginia Commonwealth University Medical Center, Richmond, Virginia, USA.,Division of Infectious Disease, Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
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Progression of coronary artery disease in a HIV-infected patient previously treated for ascending aorta aneurysm. POLISH JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2017; 14:211-213. [PMID: 29181053 PMCID: PMC5701601 DOI: 10.5114/kitp.2017.70539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 06/04/2017] [Indexed: 11/18/2022]
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Dhanjal NIK, Sharma S, Prabhu KS, Prakash NT. Selenium supplementation through Se-rich dietary matrices can upregulate the anti-inflammatory responses in lipopolysaccharide-stimulated murine macrophages. FOOD AGR IMMUNOL 2017; 28:1374-1392. [PMID: 29563666 PMCID: PMC5858741 DOI: 10.1080/09540105.2017.1343805] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/14/2017] [Indexed: 01/21/2023] Open
Abstract
The accessibility of selenium from naturally enriched sources such as cereals crops can potentially be used as selenium supplements to support nutritional requirements. Dietary selenium supplementation, as Se-rich wheat extracts, on RAW264.7 macrophage cells enhanced the antioxidant capacity via augmentation of cellular selenoprotein glutathione peroxidase 1 (GPx-1) expression in the absence or presence of lipopolysaccharide (LPS) treatment. Cells were supplemented with Se in the form of sodium selenite (SS), seleniferous wheat extract (SeW) and seleniferous wheat extract with rMETase treatment (SeW+rMET) at three different concentrations. Cells supplemented with SS and SeW+rMET showed increase in GPx-1 expression as compared to SeW treated cells. SeW+rMET, further, down-regulated the LPS-induced expression of cyclooxygenase-2, microsomal PGE synthase-1 and inducible nitric oxide synthase w.r.t. Se-deficient cells, while the expression of hematopoietic PGD synthase was upregulated. This demonstrates SeSup effectively modulates the expression inflammatory responses, indicating the potential benefits of dietary selenium supplementation.
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Affiliation(s)
| | | | - K Sandeep Prabhu
- Department of Veterinary Science and The Center for Molecular Toxicology and Carcinogenesis, 115 Henning, The Pennsylvania State University, University Park, PA 16802, U.S.A
| | - N Tejo Prakash
- School of Energy and Environment, Thapar University, Patiala, India
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Differential prevalence and correlates of whole blood Epstein-Barr virus DNA between HIV-positive and HIV-negative men who have sex with men in Shanghai, China. Epidemiol Infect 2017; 145:2330-2340. [PMID: 28578749 DOI: 10.1017/s0950268817001054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This cross-sectional study aimed to examine and compare prevalence and correlates of whole blood Epstein-Barr virus (EBV) DNA between HIV-positive and HIV-negative men who have sex with men (MSM). Five hundred and four HIV-positive MSM and 504 age-matched HIV-negative MSM were recruited from an HIV counseling and testing clinic in Shanghai, China from November 2014 to November 2015 and were administered with a face-to-face questionnaire interview. Whole blood EBV DNA was tested by nested polymerase chain reaction assays on EBNA-1, EBNA-2, and LMP-1 genes. The prevalence of whole blood EBV DNA was 56·0% (95% CI 51·7-60·3%) among HIV-positive MSM and 26·0% (95% CI 22·4-30·0%) among HIV-negative MSM. Whole blood EBV DNA positivity was significantly associated with HIV infection (adjusted odds ratio (aOR) 3·43, 95% CI 2·58-4·57) and frequent intake of pickled, smoked, or salty food (aOR 1·71, 95% CI 1·02-2·86) in the whole sample, and with <200 cells/μl CD4 cell counts (aOR 1·79, 95% CI 1·05-3·05) and pickled, smoked, or salty food intake (aOR 3·14, 95% CI 1·39-7·08) in HIV-positive group. HIV-infected MSM are at higher risk of active EBV replication than HIV-uninfected MSM, underscoring needs of surveillance and research on EBV-related carcinogenesis in this population.
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Gelpi M, Hartling HJ, Ueland PM, Ullum H, Trøseid M, Nielsen SD. Tryptophan catabolism and immune activation in primary and chronic HIV infection. BMC Infect Dis 2017; 17:349. [PMID: 28511640 PMCID: PMC5434617 DOI: 10.1186/s12879-017-2456-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/09/2017] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Kynurenine/Tryptophan ratio (KTR) is increased in HIV infection, and linked to immune activation. We hypothesized that early cART initiation results in lower KTR compared to late initiation. Furthermore, we hypothesized that KTR prior to cART is a predictor of the magnitude of subsequent reduction in immune activation. METHODS Prospective study including 57 HIV-infected individuals (primary HIV infection (N = 14), early presenters (>350 CD4+ T cells/μL, N = 24), late presenters (<200 CD4+ T cells/μL, N = 19)). Kynurenine and tryptophan were analysed by liquid chromatography-tandem mass spectrometry. Total CD4+ and CD8+ T cells were determined and proportion of activated CD38 + HLA-DR+ Tcells was measured using flow cytometry at baseline and after 6 and 12 months of cART. RESULTS At baseline, primary HIV infection had higher KTR than early presenters. However, similar KTR in primary HIV infection and early presenters was found after cART initiation, while late presenters had higher KTR at all time points. In primary HIV infection and early presenters, KTR was positively associated with proportion of activated cells at baseline. Furthermore, in early presenters the KTR at baseline was associated with proportion of activated cells after 6 and 12 months. Interestingly, in primary HIV infection the KTR at baseline was positively associated with reduction in proportion of CD8 + CD38 + HLA-DR T cells after 6 and 12 months. CONCLUSIONS Lower kynurenine/tryptophan ratio during follow-up was found after early initiation of cART. KTR in primary HIV infection and early presenters was positively associated with immune activation. Importantly, KTR in primary HIV infection predicted the magnitude of subsequent reduction in immune activation. Thus, a beneficial effect of early cART on KTR was suggested.
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Affiliation(s)
- Marco Gelpi
- Viro-Immunology Research Unit, Department of Infectious Diseases, University Hospital of Copenhagen, Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark
| | - Hans J Hartling
- Viro-Immunology Research Unit, Department of Infectious Diseases, University Hospital of Copenhagen, Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark
| | - Per M Ueland
- Section for pharmacology, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Henrik Ullum
- Department of Clinical Immunology, University Hospital of Copenhagen, Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark
| | - Marius Trøseid
- Section of Clinical Immunology and Infectious Diseases, University Hospital Rikshospitalet, Kirkeveien 166, Oslo, Norway
| | - Susanne D Nielsen
- Viro-Immunology Research Unit, Department of Infectious Diseases, University Hospital of Copenhagen, Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark.
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Lovelace ES, Maurice NJ, Miller HW, Slichter CK, Harrington R, Magaret A, Prlic M, De Rosa S, Polyak SJ. Silymarin suppresses basal and stimulus-induced activation, exhaustion, differentiation, and inflammatory markers in primary human immune cells. PLoS One 2017; 12:e0171139. [PMID: 28158203 PMCID: PMC5291532 DOI: 10.1371/journal.pone.0171139] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/15/2017] [Indexed: 12/13/2022] Open
Abstract
Silymarin (SM), and its flavonolignan components, alter cellular metabolism and inhibit inflammatory status in human liver and T cell lines. In this study, we hypothesized that SM suppresses both acute and chronic immune activation (CIA), including in the context of HIV infection. SM treatment suppressed the expression of T cell activation and exhaustion markers on CD4+ and CD8+ T cells from chronically-infected, HIV-positive subjects. SM also showed a trend towards modifying CD4+ T cell memory subsets from HIV+ subjects. In the HIV-negative setting, SM treatment showed trends towards suppressing pro-inflammatory cytokines from non-activated and pathogen-associated molecular pattern (PAMP)-activated primary human monocytes, and non-activated and cytokine- and T cell receptor (TCR)-activated mucosal-associated invariant T (MAIT) cells. The data suggest that SM elicits broad anti-inflammatory and immunoregulatory activity in primary human immune cells. By using novel compounds to alter cellular inflammatory status, it may be possible to regulate inflammation in both non-disease and disease states.
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Affiliation(s)
- Erica S. Lovelace
- Department of Laboratory Medicine, University of Washington, Seattle, WA, United States of America
| | - Nicholas J. Maurice
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
| | - Hannah W. Miller
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
| | - Chloe K. Slichter
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
- Department of Global Health, University of Washington, Seattle, WA, United States of America
| | - Robert Harrington
- Division of Allergy and Infectious Disease, University of Washington, Seattle, WA, United States of America
| | - Amalia Magaret
- Department of Laboratory Medicine, University of Washington, Seattle, WA, United States of America
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
- Department of Biostatistics, University of Washington, Seattle, WA, United States of America
| | - Martin Prlic
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
- Department of Global Health, University of Washington, Seattle, WA, United States of America
| | - Stephen De Rosa
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
| | - Stephen J. Polyak
- Department of Laboratory Medicine, University of Washington, Seattle, WA, United States of America
- Department of Global Health, University of Washington, Seattle, WA, United States of America
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
- * E-mail:
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31
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Tuluc F, Spitsin S, Tustin NB, Murray JB, Tustin R, Schankel LA, Wiznia A, Nachman S, Douglas SD. Decreased PD-1 Expression on CD8 Lymphocyte Subsets and Increase in CD8 Tscm Cells in Children with HIV Receiving Raltegravir. AIDS Res Hum Retroviruses 2017; 33:133-142. [PMID: 27615375 DOI: 10.1089/aid.2016.0108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We investigated the effect of combination antiretroviral therapy (cART) on immune recovery, particularly on the percentages of PD-1-positive cells within the major leukocyte subsets. Cryopreserved peripheral blood mononuclear cells and plasma samples collected longitudinally from a subset of 13 children and adolescents (between 9.7 and 18.2 years old) who were enrolled in the International Maternal Pediatric Adolescent AIDS Clinical Trials (IMPAACT) P1066 were used for this study. Immunophenotyping by flow cytometry was performed to determine the effect of raltegravir-containing cART regimen on the distribution of leukocyte populations, on the expression of PD-1 on T cell subpopulations, and on the expression of well-established markers of T cell activation (CD38 and HLA-DR) on CD8 T cells. C reactive protein (CRP), lipopolysaccharide (LPS), IL-6, and soluble CD163 were assayed in plasma samples by an enzyme-linked immunosorbent assay. Plasma viral loads were decreased in all subjects (by an average of 2.9 log units). The cART regimen, including raltegravir, induced changes in CD8 T cell subsets, consistent with an effective antiretroviral outcome and improved immunologic status, including increased percentages of CD8 stem cell memory T cells (Tscm). The percentages of CD8 PD-1-positive cells decreased significantly as compared with baseline levels. Among the proinflammatory markers measured in plasma, sCD163 showed a decline that was associated with cART. cART therapy, including raltegravir, over 48 weeks in children is associated with immune restoration, consistent with effective antiretroviral therapy, namely decreased percentages of PD-1+ CD8+ T cells, an increase in CD8 Tscm cells, and decreased levels of sCD163.
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Affiliation(s)
- Florin Tuluc
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
- Flow Cytometry Core Laboratory, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
| | - Sergei Spitsin
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
| | - Nancy B. Tustin
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
| | - Jennifer B. Murray
- Flow Cytometry Core Laboratory, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
| | - Richard Tustin
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
| | - Laura A. Schankel
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
| | - Andrew Wiznia
- Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, New York
| | - Sharon Nachman
- Department of Pediatrics, Stony Brook School of Medicine, Stony Brook, New York
| | - Steven D. Douglas
- Division of Allergy and Immunology, The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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32
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HIV-1 Tat exacerbates lipopolysaccharide-induced cytokine release via TLR4 signaling in the enteric nervous system. Sci Rep 2016; 6:31203. [PMID: 27491828 PMCID: PMC4974559 DOI: 10.1038/srep31203] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 07/14/2016] [Indexed: 12/13/2022] Open
Abstract
The loss of gut epithelium integrity leads to translocation of microbes and microbial products resulting in immune activation and drives systemic inflammation in acquired immunodeficiency syndrome (AIDS) patients. Although viral loads in HIV patients are significantly reduced in the post-cART era, inflammation and immune activation persist and can lead to morbidity. Here, we determined the interactive effects of the viral protein HIV-1 Tat and lipopolysaccharide (LPS) on enteric neurons and glia. Bacterial translocation was significantly enhanced in Tat-expressing (Tat+) mice. Exposure to HIV-1 Tat in combination with LPS enhanced the expression and release of the pro-inflammatory cytokines IL-6, IL-1β and TNF-α in the ilea of Tat+ mice and by enteric glia. This coincided with enhanced NF-κB activation in enteric glia that was abrogated in glia from TLR4 knockout mice and by knockdown (siRNA) of MyD88 siRNA in wild type glia. The synergistic effects of Tat and LPS resulted in a reduced rate of colonic propulsion in Tat+ mice treated with LPS. These results show that HIV-1 Tat interacts with the TLR4 receptor to enhance the pro-inflammatory effects of LPS leading to gastrointestinal dysmotility and enhanced immune activation.
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Manjati T, Nkambule B, Ipp H. Immune activation is associated with decreased thymic function in asymptomatic, untreated HIV-infected individuals. South Afr J HIV Med 2016; 17:445. [PMID: 29568606 PMCID: PMC5843076 DOI: 10.4102/sajhivmed.v17i1.445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 05/25/2016] [Indexed: 11/15/2022] Open
Abstract
Background Reduced thymic function causes poor immunological reconstitution in human immunodeficiency virus (HIV)-positive patients on combined antiretroviral therapy (cART). The association between immune activation and thymic function in asymptomatic HIV-positive treatment-naive individuals has thus far not been investigated. Aims and objectives To optimise a five-colour flow cytometric assay for measurement of thymic function by measuring recent thymic emigrants (RTEs) in treatment-naive HIV-infected patients and healthy controls and correlate results with levels of immune activation, CD4 counts and viral load. Methods Blood obtained from 53 consenting HIV-positive individuals and 32 controls recruited from HIV prevention and testing clinic in Cape Town, South Africa. RTEs were measured (CD3+/CD4+/CD45RA+/CD31+/CD62L+) and levels were correlated with CD4 counts of HIV-infected individuals, log viral load and levels of immune activation (CD8+/CD38+ T-cells). Results HIV-infected individuals had reduced frequencies of RTEs when compared to controls (p = 0.0035). Levels of immune activation were inversely correlated with thymic function (p = 0.0403), and the thymic function in HIV-infected individuals showed no significant correlation with CD4 counts (p = 0.31559) and viral load (p = 0.20628). Conclusions There was impaired thymic function in HIV-infected individuals, which was associated with increased levels of immune activation. The thymic dysfunction was not associated with CD4 counts and viral load. Immune activation may result in inflammatory damage to the thymus and subsequent thymic dysfunction, and CD4 counts and viral load may not necessarily reflect thymic dysfunction in HIV.
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Affiliation(s)
- Thandiwe Manjati
- Division of Haematology, Department of Pathology, Stellenbosch University, South Africa.,Division of Haematopathology, National Health Laboratory Service, Tygerberg Hospital, Cape Town, South Africa
| | - Bongani Nkambule
- Division of Haematopathology, National Health Laboratory Service, Tygerberg Hospital, Cape Town, South Africa.,Department of Physiology, School of Laboratory and Medical Sciences, University of KwaZulu-Natal, South Africa
| | - Hayley Ipp
- Division of Haematology, Department of Pathology, Stellenbosch University, South Africa.,Division of Haematopathology, National Health Laboratory Service, Tygerberg Hospital, Cape Town, South Africa
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34
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Deleage C, Schuetz A, Alvord WG, Johnston L, Hao XP, Morcock DR, Rerknimitr R, Fletcher JL, Puttamaswin S, Phanuphak N, Dewar R, McCune JM, Sereti I, Robb M, Kim JH, Schacker TW, Hunt P, Lifson JD, Ananworanich J, Estes JD. Impact of early cART in the gut during acute HIV infection. JCI Insight 2016; 1:e87065. [PMID: 27446990 PMCID: PMC4951101 DOI: 10.1172/jci.insight.87065] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 05/19/2016] [Indexed: 01/03/2023] Open
Abstract
Early after HIV infection there is substantial depletion of CD4+ T cells in the gastrointestinal (GI) tract lamina propria (LP), with associated epithelial barrier damage, leading to microbial translocation and systemic inflammation and immune activation. In this study, we analyzed these early events in the GI tract in a cohort of Thai acute HIV-infected patients and determined the effect of early combination antiretroviral treatment (cART). HIV-uninfected and chronically and acutely HIV-infected patients at different Fiebig stages (I-V) underwent colonic biopsies and then received cART. Immunohistochemistry and quantitative image analysis were performed on cross-sectional and longitudinal colon biopsy specimens (day 0 to week 96) to measure GI tract damage (infiltration of polymorphonuclear cells), inflammation (M×1, TNF-α), immune activation (Ki-67), and the CD4+ T cell population in the LP. The magnitude of GI tract damage, immune activation, and inflammation was significantly increased, with significantly depleted CD4+ T cells in the LP in all acutely infected groups prior to cART compared with HIV-uninfected control participants. While most patients treated during acute infection resolved GI tract inflammation and immune activation back to baseline levels after 24 weeks of cART, most acutely infected participants did not restore their CD4+ T cells after 96 weeks of cART.
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Affiliation(s)
- Claire Deleage
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland, USA
| | - Alexandra Schuetz
- Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
- US Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | - W. Gregory Alvord
- Statistical Consulting, Data Management Services Inc., Frederick, Maryland, USA
| | - Leslie Johnston
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland, USA
| | - Xing-Pei Hao
- Pathology and Histotechnology Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland, USA
| | - David R. Morcock
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland, USA
| | | | - James L.K. Fletcher
- SEARCH, Bangkok, Thailand
- Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Suwanna Puttamaswin
- SEARCH, Bangkok, Thailand
- Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Nittaya Phanuphak
- SEARCH, Bangkok, Thailand
- Thai Red Cross AIDS Research Centre, Bangkok, Thailand
| | - Robin Dewar
- Virus Isolation and Serology Laboratory, Applied and Developmental Research Directorate, Science Applications International Corp., Frederick Inc. National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, Maryland, USA
| | - Joseph M. McCune
- Division of Experimental Medicine, Department of Medicine, UCSF, San Francisco, California, USA
| | - Irini Sereti
- National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Merlin Robb
- US Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | - Jerome H. Kim
- US Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
- SEARCH, Bangkok, Thailand
- International Vaccine Institute, Seoul, South Korea
| | - Timothy W. Schacker
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Peter Hunt
- Positive Health Program, Department of Medicine, UCSF, San Francisco, California, USA
| | - Jeffrey D. Lifson
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland, USA
| | - Jintanat Ananworanich
- US Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
- SEARCH, Bangkok, Thailand
| | - Jacob D. Estes
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland, USA
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35
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Obuku AE, Asiki G, Abaasa A, Ssonko I, Harari A, van Dam GJ, Corstjens PL, Joloba M, Ding S, Mpendo J, Nielsen L, Kamali A, Elliott AM, Pantaleo G, Kaleebu P, Pala P. Effect of Schistosoma mansoni Infection on Innate and HIV-1-Specific T-Cell Immune Responses in HIV-1-Infected Ugandan Fisher Folk. AIDS Res Hum Retroviruses 2016; 32:668-75. [PMID: 26864743 PMCID: PMC4931742 DOI: 10.1089/aid.2015.0274] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
In Uganda, fisher folk have HIV prevalence rates, about four times higher than the national average, and are often coinfected with Schistosoma mansoni. We hypothesized that innate immune responses and HIV-specific Th1 immune responses might be downmodulated in HIV/S. mansoni-coinfected individuals compared with HIV+/S. mansoni-negative individuals. We stimulated whole blood with innate receptor agonists and analyzed supernatant cytokines by Luminex. We evaluated HIV-specific responses by intracellular cytokine staining for IFN-γ, IL-2, and TNF-α. We found that the plasma viral load and CD4 count were similar between the HIV+SM+ and HIV+SM− individuals. In addition, the TNF-α response to the imidazoquinoline compound CL097 and β-1, 3-glucan (curdlan), was significantly higher in HIV/S. mansoni-coinfected individuals compared with HIV only-infected individuals. The frequency of HIV-specific IFN-γ+IL-2–TNF-α− CD8 T cells and IFN-γ+IL-2–TNF-α+ CD4 T cells was significantly higher in HIV/S. mansoni-coinfected individuals compared with HIV only-infected individuals. These findings do not support the hypothesis that S. mansoni downmodulates innate or HIV-specific Th1 responses in HIV/S. mansoni-coinfected individuals.
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Affiliation(s)
- Andrew Ekii Obuku
- Basic Science Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Gershim Asiki
- HIV Prevention and Epidemiology Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Andrew Abaasa
- HIV Prevention and Epidemiology Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Isaac Ssonko
- HIV Prevention and Epidemiology Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Alexandre Harari
- Division of Immunology and Allergy, Department of Medicine, Lausanne University Teaching Hospital, Lausanne, Switzerland
| | | | | | - Moses Joloba
- Department of Medical Microbiology, Makerere University College of Health Sciences, Kampala, Uganda
| | - Song Ding
- EuroVacc Foundation, Amsterdam, the Netherlands
| | - Juliet Mpendo
- Uganda Virus Research Institute/International AIDS Vaccine Initiative, Entebbe, Uganda
| | - Leslie Nielsen
- Uganda Virus Research Institute/International AIDS Vaccine Initiative, Entebbe, Uganda
| | - Anatoli Kamali
- HIV Prevention and Epidemiology Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
| | - Alison M. Elliott
- Co-Infections Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Giuseppe Pantaleo
- Division of Immunology and Allergy, Department of Medicine, Lausanne University Teaching Hospital, Lausanne, Switzerland
| | - Pontiano Kaleebu
- Basic Science Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Pietro Pala
- Basic Science Programme, Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda
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Zilberman-Schapira G, Zmora N, Itav S, Bashiardes S, Elinav H, Elinav E. The gut microbiome in human immunodeficiency virus infection. BMC Med 2016; 14:83. [PMID: 27256449 PMCID: PMC4891875 DOI: 10.1186/s12916-016-0625-3] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 05/10/2016] [Indexed: 02/07/2023] Open
Abstract
HIV/AIDS causes severe dysfunction of the immune system through CD4+ T cell depletion, leading to dysregulation of both the adaptive and innate immune arms. A primary target for viral infection is the gastrointestinal tract, which is a reservoir of CD4+ T cells. In addition to being a major immune hub, the human gastrointestinal tract harbors trillions of commensal microorganisms, the microbiota, which have recently been shown to play critical roles in health. Alterations in the composition and function of microbiota have been implicated in a variety of 'multi-factorial' disorders, including infectious, autoimmune, metabolic, and neoplastic disorders. It is widely accepted that, in addition to its direct role in altering the gastrointestinal CD4+ T cell compartment, HIV infection is characterized by gut microbiota compositional and functional changes. Herein, we review such alterations and discuss their potential local and systemic effects on the HIV-positive host, as well as potential roles of novel microbiota-targeting treatments in modulating HIV progression and associated adverse systemic manifestations.
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Affiliation(s)
- Gili Zilberman-Schapira
- Department of Immunology, Weizmann Institute of Science, 234 Herzl Street, Rehovot, 76100, Israel
| | - Niv Zmora
- Department of Immunology, Weizmann Institute of Science, 234 Herzl Street, Rehovot, 76100, Israel
| | - Shlomik Itav
- Department of Immunology, Weizmann Institute of Science, 234 Herzl Street, Rehovot, 76100, Israel
| | - Stavros Bashiardes
- Department of Immunology, Weizmann Institute of Science, 234 Herzl Street, Rehovot, 76100, Israel
| | - Hila Elinav
- Hadassah AIDS Center, Department of Clinical Microbiology and Infectious Diseases, Hadassah-Hebrew University Medical Center, Jerusalem, 91120, Israel.
| | - Eran Elinav
- Department of Immunology, Weizmann Institute of Science, 234 Herzl Street, Rehovot, 76100, Israel.
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37
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Shmagel KV, Saidakova EV, Shmagel NG, Korolevskaya LB, Chereshnev VA, Robinson J, Grivel JC, Douek DC, Margolis L, Anthony DD, Lederman MM. Systemic inflammation and liver damage in HIV/hepatitis C virus coinfection. HIV Med 2016; 17:581-9. [PMID: 27187749 DOI: 10.1111/hiv.12357] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2015] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Chronic hepatitis C virus (HCV) and HIV viral infections are characterized by systemic inflammation. Yet the relative levels, drivers and correlates of inflammation in these settings are not well defined. METHODS Seventy-nine HIV-infected patients who had been receiving antiretroviral therapy (ART) for more than 2 years and who had suppressed plasma HIV levels (< 50 HIV-1 RNA copies/mL) were included in the study. Two patient groups, HCV-positive/HIV-positive and HCV-negative/HIV-positive, and a control group comprised of healthy volunteers (n = 20) were examined. Markers of systemic inflammation [interleukin (IL)-6, interferon gamma-induced protein (IP)-10, soluble tumour necrosis factor receptor-I (sTNF-RI) and sTNF-RII], monocyte/macrophage activation [soluble CD163 (sCD163), soluble CD14 and neopterin], intestinal epithelial barrier loss [intestinal fatty acid binding protein (I-FABP) and lipopolysaccharide (LPS)] and coagulation (d-dimers) were analysed. CD4 naïve T cells and CD4 recent thymic emigrants (RTEs) were enumerated. RESULTS Plasma levels of IP-10, neopterin and sCD163 were higher in HCV/HIV coinfection than in HIV monoinfection and were positively correlated with indices of hepatic damage [aspartate aminotransferase (AST), alanine aminotransferase (ALT) and the AST to platelet ratio index (APRI)]. Levels of I-FABP were comparably increased in HIV monoinfection and HIV/HCV coinfection but LPS concentrations were highest in HCV/HIV coinfection, suggesting impaired hepatic clearance of LPS. Plasma HCV levels were not related to any inflammatory indices except sCD163. In coinfected subjects, a previously recognized relationship of CD4 naïve T-cell and RTE counts to hepatocellular injury was defined more mechanistically by an inverse relationship to sCD163. CONCLUSIONS Hepatocellular injury in HCV/HIV coinfection is linked to elevated levels of certain inflammatory cytokines and an apparent failure to clear systemically translocated microbial products. A related decrease in CD4 naïve T cells and RTEs also merits further exploration.
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Affiliation(s)
- K V Shmagel
- Institute of Ecology and Genetics of Microorganisms UB RAS, Perm, Russia.,Perm State University, Perm, Russia
| | - E V Saidakova
- Institute of Ecology and Genetics of Microorganisms UB RAS, Perm, Russia.,Perm State University, Perm, Russia
| | - N G Shmagel
- Perm State University, Perm, Russia.,Perm Regional Center for Protection against AIDS and Infectious Diseases, Perm, Russia
| | - L B Korolevskaya
- Institute of Ecology and Genetics of Microorganisms UB RAS, Perm, Russia.,Perm State University, Perm, Russia
| | - V A Chereshnev
- Institute of Ecology and Genetics of Microorganisms UB RAS, Perm, Russia.,Perm State University, Perm, Russia.,Institute of Immunology and Physiology UB RAS, Yekaterinburg, Russia
| | - J Robinson
- Case Western Reserve University, Cleveland, OH, USA
| | - J-C Grivel
- National Institute of Child Health and Development, Bethesda, MD, USA
| | - D C Douek
- Vaccine Research Center, National Institutes of Health, Bethesda, MD, USA
| | - L Margolis
- National Institute of Child Health and Development, Bethesda, MD, USA
| | - D D Anthony
- Case Western Reserve University, Cleveland, OH, USA
| | - M M Lederman
- Case Western Reserve University, Cleveland, OH, USA
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38
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Wang X, Mbondji-Wonje C, Zhao J, Hewlett I. IL-1β and IL-18 inhibition of HIV-1 replication in Jurkat cells and PBMCs. Biochem Biophys Res Commun 2016; 473:926-930. [PMID: 27049306 DOI: 10.1016/j.bbrc.2016.03.153] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 03/31/2016] [Indexed: 02/07/2023]
Abstract
HIV-1 infection-induced apoptosis is able to ensure viral replication. The death of some CD4+ T cells residing in lymphoid tissues can be induced by HIV-1 infection through caspase-1 driven pyroptosis with release of cytokine of IL-1β and IL-18. It is not well known whether IL-1β and IL-18 affect HIV-1 replication in lymphocytic cells. Using susceptible lymphocytic cell line, Jurkat cells, and primary peripheral blood mononuclear cells (PBMCs), we studied the effects of IL-1β and IL-18 on HIV-1 replication. We found that treatment with exogenous IL-1β protein (rIL-1β) and IL-18 protein (rIL-18), or expression of IL-1β and IL-18 significantly reduced HIV-1 replication. HIV-1 infection enhanced caspase-3 expression and its activation, and had no effects on caspase-1 activity. Treatment with rIL-1β and rIL-18 dramatically lowered caspase-3 activity. IL-1β and IL-18 also played roles in diminishing reactivation of viral replication from latency in J1.1 cells. These results indicate that IL-1β and IL-18 are able to inhibit HIV-1 replication, and their effects may be due to signaling through apoptosis involved in inactivation of caspase-3 activity.
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Affiliation(s)
- Xue Wang
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA.
| | - Christelle Mbondji-Wonje
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Jiangqin Zhao
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Indira Hewlett
- Lab of Molecular Virology, Division of Emerging and Transfusion Transmitted Diseases, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA.
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HIV-1 transcriptional activity during frequent longitudinal sampling in aviremic patients on antiretroviral therapy. AIDS 2016; 30:713-21. [PMID: 26595541 DOI: 10.1097/qad.0000000000000974] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND HIV-1 transcription during suppressive antiretroviral therapy (ART) is not well understood. This is problematic as latency-reactivating agent-based HIV-1 eradication trials utilize changes in viral transcription as an efficacy biomarker. METHODS We conducted an observational cohort study enrolling aviremic, HIV-1-infected adults on long-term ART. Cell-associated unspliced (CA-US) HIV-1 RNA and total HIV-1 DNA were quantified in unfractionated CD4 T cells monthly for a total of six consecutive visits. Random-effects models were used to determine the following: (i) proportion of variation attributable to intra-individual versus inter-individual changes; (ii) range estimate for random samples from any participant or cohort-matched individual (95% prediction interval); and (iii) range estimate for random samples from the same person (95% variation intervals expressed as fold change). RESULTS Among our cohort of 26 HIV-1 patients, 10.4% of variation in CA-US HIV-1 RNA was attributable to intra-individual fluctuations. Similarly, intra-individual changes also accounted for minor proportions of the variation in total HIV-1 DNA (5.1%) and RNA/DNA (28.3%). The 95% prediction interval (per 10 CD4 T cells) for CA-US HIV-1 RNA and HIV-1 DNA were each approximately 2 log10. Finally, model-derived 95% variation intervals indicate that spontaneous changes above 2.11-fold in CA-US HIV-1 RNA would occur in less than 5% of repeated measurements in an individual on long-term ART. CONCLUSION The individual CA-US HIV-1 RNA levels are remarkably stable during ART. Importantly, the observed variations were less than the reported changes for latency-reactivating agent trials. These data will serve as a foundation for planning and interpreting future eradication trials.
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Samarani S, Allam O, Sagala P, Aldabah Z, Jenabian MA, Mehraj V, Tremblay C, Routy JP, Amre D, Ahmad A. Imbalanced production of IL-18 and its antagonist in human diseases, and its implications for HIV-1 infection. Cytokine 2016; 82:38-51. [PMID: 26898120 DOI: 10.1016/j.cyto.2016.01.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/12/2016] [Accepted: 01/15/2016] [Indexed: 12/16/2022]
Abstract
IL-18 is a pleiotropic and multifunctional cytokine that belongs to the IL-1 family. It is produced as a biologically inactive precursor, which is cleaved into its active mature form mainly by caspase-1. The caspase becomes active from its inactive precursor (procaspase-1) upon assembly of an inflammasome. Because of IL-18's potential pro-inflammatory and tissue destructive effects, its biological activities are tightly controlled in the body by its naturally occurring antagonist called IL-18BP. The antagonist is produced in the body both constitutively and in response to an increased production of IL-18 as a negative feedback mechanism. Under physiological conditions, most of IL-18 in the circulation is bound with IL-18BP and is inactive. However, an imbalance in the production of IL-18 and its antagonist (an increase in the production of IL-18 with a decrease, no increase or an insufficient increase in the production of IL-18BP) has been described in many chronic inflammatory diseases in humans. The imbalance results in an increase in the concentrations of free IL-18 (unbound with its antagonist) resulting in increased biological activities of the cytokine that contribute towards pathogenesis of the disease. In this article, we provide an overview of the current biology of IL-18 and its antagonist, discuss how the imbalance occurs in HIV infections and how it contributes towards development of AIDS and other non-AIDS-associated clinical conditions occurring in HIV-infected individuals undergoing combination anti-retroviral therapy (cART). Finally, we discuss challenges facing immunotherapeutic strategies aimed at restoring balance between IL-18 and its antagonist in these patients.
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Affiliation(s)
- Suzanne Samarani
- Laboratory of Innate Immunity, Canada; CHU-Sainte-Justine Research Center, Canada; Department of Microbiology, Infectiology & Immunology, Canada; University of Montreal, Montreal, Canada
| | - Ossama Allam
- Laboratory of Innate Immunity, Canada; CHU-Sainte-Justine Research Center, Canada; Department of Microbiology, Infectiology & Immunology, Canada; University of Montreal, Montreal, Canada
| | - Patrick Sagala
- Laboratory of Innate Immunity, Canada; CHU-Sainte-Justine Research Center, Canada; Department of Microbiology, Infectiology & Immunology, Canada; University of Montreal, Montreal, Canada
| | - Zainab Aldabah
- Laboratory of Innate Immunity, Canada; CHU-Sainte-Justine Research Center, Canada; Department of Microbiology, Infectiology & Immunology, Canada; University of Montreal, Montreal, Canada
| | | | - Vikram Mehraj
- McGill University Health Center, McGill University, Montreal, Canada
| | - Cécile Tremblay
- Department of Microbiology, Infectiology & Immunology, Canada; Division of Infectious Diseases, CHUM, Canada; University of Montreal, Montreal, Canada
| | - Jean-Pierre Routy
- McGill University Health Center, McGill University, Montreal, Canada
| | - Devendra Amre
- CHU-Sainte-Justine Research Center, Canada; Department of Pediatrics, Canada; University of Montreal, Montreal, Canada
| | - Ali Ahmad
- Laboratory of Innate Immunity, Canada; CHU-Sainte-Justine Research Center, Canada; Department of Microbiology, Infectiology & Immunology, Canada; University of Montreal, Montreal, Canada.
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Dehon PM, Hagensee ME, Sutton KJ, Oddo HE, Nelson N, McGowin CL. Histological Evidence of Chronic Mycoplasma genitalium-Induced Cervicitis in HIV-Infected Women: A Retrospective Cohort Study. J Infect Dis 2016; 213:1828-35. [PMID: 26783349 DOI: 10.1093/infdis/jiw025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 01/10/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Mycoplasma genitalium is an emerging sexually transmitted pathogen implicated in inflammatory syndromes of the female reproductive tract. The objective of this study was to investigate human immunodeficiency virus (HIV)-infected women for an association between M. genitalium and cervicitis, a putative mechanism for enhanced HIV transmission efficiency to an uninfected partner. METHODS Using a longitudinal cohort of antiretroviral therapy-adherent New Orleans women, we retrospectively screened for M. genitalium and quantitatively characterized several markers of cervical inflammation, including secreted cytokines and cytological and histological signs of leukocyte infiltration. RESULTS We observed a high prevalence of M. genitalium (7.4%) among HIV-infected New Orleans women. Chronic M. genitalium infection was associated with increased secretion of proinflammatory cytokines, including interleukin 1β, interleukin 6, and interleukin 8, and marked inflammatory cervical infiltrates in the cervix with enrichment of HIV target cells. Cure of M. genitalium infection resulted in ablation of all signs of inflammation. CONCLUSIONS These findings implicate M. genitalium as an etiologic agent of cervicitis in HIV-infected women, providing a potential mechanism for enhanced HIV transmission to an uninfected partner. Screening and treatment of M. genitalium among HIV-infected individuals may be warranted to further understand this coinfection scenario, improve cervical health, and reduce the spread of HIV.
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Affiliation(s)
| | - Michael E Hagensee
- Department of Microbiology, Immunology, and Parasitology Section of Infectious Diseases, Department of Internal Medicine, Louisiana State University Health Sciences Center, New Orleans
| | | | - Hope E Oddo
- Department of Microbiology, Immunology, and Parasitology
| | - Nia Nelson
- Department of Microbiology, Immunology, and Parasitology
| | - Chris L McGowin
- Department of Microbiology, Immunology, and Parasitology Section of Infectious Diseases, Department of Internal Medicine, Louisiana State University Health Sciences Center, New Orleans
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Lovelace ES, Polyak SJ. Natural Products as Tools for Defining How Cellular Metabolism Influences Cellular Immune and Inflammatory Function during Chronic Infection. Viruses 2015; 7:6218-32. [PMID: 26633463 PMCID: PMC4690857 DOI: 10.3390/v7122933] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/13/2015] [Accepted: 11/19/2015] [Indexed: 12/21/2022] Open
Abstract
Chronic viral infections like those caused by hepatitis C virus (HCV) and human immunodeficiency virus (HIV) cause disease that establishes an ongoing state of chronic inflammation. While there have been tremendous improvements towards curing HCV with directly acting antiviral agents (DAA) and keeping HIV viral loads below detection with antiretroviral therapy (ART), there is still a need to control inflammation in these diseases. Recent studies indicate that many natural products like curcumin, resveratrol and silymarin alter cellular metabolism and signal transduction pathways via enzymes such as adenosine monophosphate kinase (AMPK) and mechanistic target of rapamycin (mTOR), and these pathways directly influence cellular inflammatory status (such as NF-κB) and immune function. Natural products represent a vast toolkit to dissect and define how cellular metabolism controls cellular immune and inflammatory function.
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Affiliation(s)
- Erica S Lovelace
- Department of Laboratory Medicine, University of Washington, Seattle, WA 98195, USA.
| | - Stephen J Polyak
- Department of Laboratory Medicine, University of Washington, Seattle, WA 98195, USA.
- Department of Microbiology, University of Washington, Seattle, WA 98195, USA.
- Department of Global Health, University of Washington, Seattle, WA 98195, USA.
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Increased susceptibility of CD4+ T cells from elderly individuals to HIV-1 infection and apoptosis is associated with reduced CD4 and enhanced CXCR4 and FAS surface expression levels. Retrovirology 2015; 12:86. [PMID: 26452480 PMCID: PMC4600300 DOI: 10.1186/s12977-015-0213-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 10/02/2015] [Indexed: 12/05/2022] Open
Abstract
Background Elderly HIV-1 infected individuals progress to AIDS more frequently and rapidly than people becoming infected at a young age. To identify possible reasons for these differences in clinical progression, we performed comprehensive phenotypic analyses of CD4+ T cells from uninfected young and elderly individuals, and examined their susceptibility to HIV-1 infection and programmed death. Results Peripheral blood mononuclear cells (PBMCs) from older people contain an increased percentage of central memory and Th17 CD4+ T cells that are main target cells of HIV-1 and strongly reduced proportions of naïve T cells that are poorly susceptible to HIV-1. Unstimulated T cells from elderly individuals expressed higher levels of activation markers, death receptors, and the viral CXCR4 co-receptor than those from young individuals but responded poorly to stimulation. CD4+ T cells from older individuals were highly susceptible to CXCR4- and CCR5-tropic HIV-1 infection but produced significantly lower quantities of infectious virus than cells from young individuals because they were highly prone to apoptosis and thus presumably had a very short life span. The increased susceptibility of T cells from the elderly to HIV-1 infection correlated directly with CXCR4 and inversely with CD4 expression. The levels of apoptosis correlated with the cell surface expression of FAS but not with the expression of programmed death receptor 1 (PD1) or tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). Conclusions Increased levels of activated and highly susceptible HIV-1 target cells, reduced CD4 and enhanced CXCR4 cell surface expression, together with the high susceptibility to FAS-induced programmed cell death may contribute to the rapid CD4+ T cell depletion and accelerated clinical course of infection in elderly HIV-1-infected individuals. Electronic supplementary material The online version of this article (doi:10.1186/s12977-015-0213-1) contains supplementary material, which is available to authorized users.
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d’Ettorre G, Ceccarelli G, Giustini N, Serafino S, Calantone N, De Girolamo G, Bianchi L, Bellelli V, Ascoli-Bartoli T, Marcellini S, Turriziani O, Brenchley JM, Vullo V. Probiotics Reduce Inflammation in Antiretroviral Treated, HIV-Infected Individuals: Results of the "Probio-HIV" Clinical Trial. PLoS One 2015; 10:e0137200. [PMID: 26376436 PMCID: PMC4573418 DOI: 10.1371/journal.pone.0137200] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 08/09/2015] [Indexed: 01/20/2023] Open
Abstract
Background HIV infection results in damage to the gastrointestinal (GI) tract, microbial translocation and immune activation. These are not completely normalized with combined antiretroviral therapy (cART). Moreover, increate morbidity and mortality of cART-treated HIV-infected individuals is associated with inflammation. Methods In order to enhance GI tract immunity, we recruited and treated 20 HIV-infected humans with cART supplemented with probiotics and followed inflammation and immunological parameters (clinical trial number NCT02164344). 11 HIV seronegative subjects were included as control group. The enumeration of CD4+, CD8+, CD38+ and HLA-DR+ lymphocytes were evaluated on peripheral blood; HIV-RNA levels, sCD14, d-dimer, C-reactive protein (CRP) high sensitivity C-reactive protein (hsCRP), IL-6 and Lipopolysaccharide Binding Protein (LBP) were assayed on plasma. Results We observe that cART does not normalize the levels of immune activation in HIV positive patients anyway inflammation and markers of microbial translocation were significantly reduced with probiotic supplementation. Patients show a clear and statistically significant reduction in the levels of immune activation on CD4 T-lymphocytes, for both markers CD38 and HLA-DR and their simultaneous expression, LBP and hsCRP plasma levels after probiotic diet supplementation settling to values comparable to controls. Conclusions Supplementing cART with probiotics in HIV-infected individuals may improve GI tract immunity and there by mitigate inflammatory sequelae, ultimately improving prognosis. Trial Registration ClinicalTrials.gov NCT02164344
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Affiliation(s)
- Gabriella d’Ettorre
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Giancarlo Ceccarelli
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
- * E-mail:
| | - Noemi Giustini
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Sara Serafino
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Nina Calantone
- Program in Barrier Immunity and Repair, Lab of Molecular Microbiology, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Gabriella De Girolamo
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Luigi Bianchi
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Valeria Bellelli
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Tommaso Ascoli-Bartoli
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | - Sonia Marcellini
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
| | | | - Jason M. Brenchley
- Program in Barrier Immunity and Repair, Lab of Molecular Microbiology, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Vincenzo Vullo
- Department of Public Health and Infectious Diseases, University of Rome “Sapienza”, Rome, Italy
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Baker CAR, Swainson L, Lin DL, Wong S, Hartigan-O'Connor DJ, Lifson JD, Tarantal AF, McCune JM. Exposure to SIV in utero results in reduced viral loads and altered responsiveness to postnatal challenge. Sci Transl Med 2015; 7:300ra125. [PMID: 26268312 PMCID: PMC5100009 DOI: 10.1126/scitranslmed.aac5547] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
HIV disease progression appears to be driven by increased immune activation. Given observations that fetal exposure to infectious pathogens in utero can result in reduced immune responses, or tolerance, to those pathogens postnatally, we hypothesized that fetal exposure to HIV may render the fetus tolerant to the virus, thus reducing damage caused by immune activation during infection later in life. To test this hypothesis, fetal rhesus macaques (Macaca mulatta) were injected with the attenuated virus SIVmac1A11 in utero and challenged with pathogenic SIVmac239 1 year after birth. SIVmac1A11-injected animals had significantly reduced plasma RNA viral loads (P < 0.02) up to 35 weeks after infection. Generalized estimating equations analysis was performed to identify immunologic and clinical measurements associated with plasma RNA viral load. A positive association with plasma RNA viral load was observed with the proportion of CD8(+) T cells expressing the transcription factor, FoxP3, and the proportion of CD4(+) T cells producing the lymphoproliferative cytokine, IL-2. In contrast, an inverse relationship was found with the frequencies of circulating CD4(+) and CD8(+) T cells displaying intermediate expression of the proliferation marker, Ki-67. Animals exposed to simian immunodeficiency virus (SIV) in utero appeared to have enhanced SIV-specific immune responses, a lower proportion of CD8(+) T cells expressing the exhaustion marker PD-1, and more circulating TH17 cells than controls. Although the development of tolerance was not demonstrated, these data suggest that rhesus monkeys exposed to SIVmac1A11 in utero had distinct immune responses associated with the control of viral replication after postnatal challenge.
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Affiliation(s)
- Chris A R Baker
- Graduate Group in Infectious Diseases and Immunity, School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA. Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Louise Swainson
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Din L Lin
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Samson Wong
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA
| | - Dennis J Hartigan-O'Connor
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA. Department of Medical Microbiology and Immunology, University of California, Davis, Davis, CA 95616, USA. California National Primate Research Center, Davis, CA 95616, USA
| | - Jeffrey D Lifson
- AIDS and Cancer Virus Program, Leidos Biomedical Research Inc., Frederick National Laboratory, Frederick, MD 21702, USA
| | - Alice F Tarantal
- Center for Fetal Monkey Gene Transfer for Heart, Lung, and Blood Diseases, California National Primate Research Center, Davis, CA 95616, USA. Department of Pediatrics, University of California, Davis, Davis, CA 95616, USA. Department of Cell Biology and Human Anatomy, University of California, Davis, Davis, CA 95616, USA
| | - Joseph M McCune
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA.
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Lucas S, Nelson AM. HIV and the spectrum of human disease. J Pathol 2015; 235:229-41. [PMID: 25251832 DOI: 10.1002/path.4449] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/12/2014] [Accepted: 09/15/2014] [Indexed: 01/18/2023]
Abstract
Infection with the human immunodeficiency virus (HIV) causes systemic T cell destruction and reduced cell-mediated immunity that leads to a wide range of opportunistic infections and cancers. Second, it directly damages many tissues - gut, brain, lung - through mononuclear cell infection and activation. Third, through immune activation and effects on endothelia, it can cause more subtle systemic organ damage, such as chronic cardiovascular, hepatic, pulmonary and central nervous system disease. Antiretroviral treatment has enabled HIV-infected persons to live with chronic infection, although with some side-effects and mortality, including reactions due to the immune reconstitution inflammatory syndrome (IRIS). As cohorts of infected people get older, age-related diseases will combine with chronic HIV infection to produce disabilities whose scale is not yet understood. HIV is detectable in tissues by immunohistochemistry when infection loads are high, such as at first presentation. Pathologists should proactively consider HIV disease in routine diagnostic work, so as to identify more HIV-infected patients and enable their optimal management.
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Affiliation(s)
- Sebastian Lucas
- Department of Histopathology, St Thomas' Hospital, London, UK
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Zemlin AE, Ipp H, Maleka S, Erasmus RT. Serum protein electrophoresis patterns in human immunodeficiency virus-infected individuals not on antiretroviral treatment. Ann Clin Biochem 2014; 52:346-51. [PMID: 25487599 DOI: 10.1177/0004563214565824] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2014] [Indexed: 01/03/2023]
Abstract
BACKGROUND B lymphocyte stimulation is described in human immunodeficiency virus (HIV) infection and results in ongoing immunoglobulin production with abnormal serum protein electrophoresis patterns. We hypothesized that serum protein electrophoresis patterns would be abnormal in untreated HIV subjects and correlate with markers of disease severity. METHODS Serum protein electrophoresis was performed on 70 HIV-positive, clinically well treatment-naïve subjects and 42 HIV-negative controls and correlated with markers of disease severity, namely CD4+ counts, viral loads, IgG and albumin. RESULTS The mean age for both groups was 33 years, and female-to-male ratios were 4:1. All were of Black ethnicity. Mean CD4 counts ± SD for HIV group and controls were 419.5 ± 218.6 and 960.4 ± 378.5 cells/mm(3), respectively. Of the HIV-infected group, 44% showed polyclonal hypergammaglobulinaemia versus 10% of controls (P < 0.01). The HIV group had 27% with an abnormal pattern requiring immunofixation which revealed nine (12.5% of total) had oligoclonal bands, seven (10.3% of total) had polyclonal hypergammaglobulinaemia and three (4% of total) had monoclonal bands. CD4+ counts were lower in those with polyclonal hypergammaglobulinaemia or abnormal serum protein electrophoresis. Interestingly, viral load results showed no statistically significant differences. CONCLUSION We found a remarkably high level (53%) of polyclonal hypergammaglobulinaemia in our untreated population compared with uninfected controls (10%). Only 4% of the HIV-positive group had a monoclonal band. Polyclonal hypergammaglobulinaemia correlated significantly with lower CD4+ counts. These results highlight the generalized B cell stimulation in untreated HIV infection. Future longitudinal studies will be important to determine the prognostic value of these findings.
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Affiliation(s)
- Annalise E Zemlin
- Division of Chemical Pathology, Department of Pathology, University of Stellenbosch and NHLS, Tygerberg Hospital, South Africa
| | - Hayley Ipp
- Division of Haematology, Department of Pathology, University of Stellenbosch and NHLS, Tygerberg Hospital, South Africa
| | - Sechaba Maleka
- Division of Chemical Pathology, Department of Pathology, University of Stellenbosch and NHLS, Tygerberg Hospital, South Africa
| | - Rajiv T Erasmus
- Division of Chemical Pathology, Department of Pathology, University of Stellenbosch and NHLS, Tygerberg Hospital, South Africa
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Abstract
UNLABELLED Interleukin-1 beta (IL-1β) is an inflammatory cytokine that is secreted in response to inflammasome activation by innate microbe-sensing pathways. Although some retroviruses can trigger IL-1β secretion through the DNA-sensing molecule IFI16, the effect of IL-1β on the course of infection is unknown. To test whether IL-1β secretion affects retroviral replication in vivo, I constructed a novel murine leukemia virus strain (FMLV-IL-1β) that encodes the mature form of IL-1β. This virus replicated with kinetics similar to that of wild-type virus in tissue culture but caused a dramatically more aggressive infection of both C57BL/6 and BALB/c mice. By 7 days postinfection (PI), mice infected with FMLV-IL-1β exhibited splenomegaly and viral loads 300-fold higher than those in mice infected with wild-type FMLV. Furthermore, the enlarged spleens of FMLV-IL-1β-infected mice correlated with a large expansion of Gr-1(+) CD11b(+) myeloid-derived suppressor cells, as well as elevated levels of immune activation. Although FMLV-IL-1β infection was controlled by C57BL/6 mice by 14 days p.i., FMLV-IL-1β was able to establish a significant persistent infection and immune activation in BALB/c mice. These results demonstrate that IL-1β secretion is a powerful positive regulator of retroviral infection and that FMLV-IL-1β represents a new model of proinflammatory retroviral infection. IMPORTANCE Interleukin-1 beta (IL-1β) is an inflammatory cytokine released in response to activation of innate pathogen-sensing pathways during microbial infection. To examine the potential impact of IL-1β on retroviral replication in vivo, I constructed a novel mouse retrovirus strain (FMLV-IL-1β) that encodes IL-1β and promotes abundant IL-1β secretion from infected cells. This virus replicates with normal kinetics in cultured cells but displays a dramatically enhanced ability to replicate in mice and caused persistent infection and immune activation in the BALB/c strain of mice. These results establish IL-1β as a positive regulator of retroviral replication and suggest that targeting this pathway may have therapeutic benefits in infections with proinflammatory retroviruses. This virus can also be used to further study the impact of inflammatory pathways on retroviral infection.
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Adebamowo CA, Casper C, Bhatia K, Mbulaiteye SM, Sasco AJ, Phipps W, Vermund SH, Krown SE. Challenges in the detection, prevention, and treatment of HIV-associated malignancies in low- and middle-income countries in Africa. J Acquir Immune Defic Syndr 2014; 67 Suppl 1:S17-26. [PMID: 25117957 PMCID: PMC4392880 DOI: 10.1097/qai.0000000000000255] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cancers associated with immunosuppression and infections have long been recognized as a major complication of HIV/AIDS. More recently, persons living with HIV are increasingly diagnosed with a wider spectrum of HIV-associated malignancies (HIVAM) as they live longer on combination antiretroviral therapy. This has spurred research to characterize the epidemiology and determine the optimal management of HIVAM with a focus on low-and middle-income countries (LMICs). Given background coinfections, environmental exposures, host genetic profiles, antiretroviral therapy usage, and varying capacities for early diagnosis and treatment, one can expect the biology of cancers in HIV-infected persons in LMICs to have a significant impact on chronic HIV care, as is now the case in high-income countries. Thus, new strategies must be developed to effectively prevent, diagnose, and treat HIVAM in LMICs; provide physical/clinical infrastructures; train the cancer and HIV workforce; and expand research capacity-particularly given the challenges posed by the limitations on available transportation and financial resources and the population's general rural concentration. Opportunities exist to extend resources supported by the President's Emergency Plan for AIDS Relief and the Global Fund to Fight AIDS, Tuberculosis, and Malaria to improve the health-care infrastructure and train the personnel required to prevent and manage cancers in persons living with HIV. These HIV chronic care infrastructures could also serve cancer patients regardless of their HIV status, facilitating long-term care and treatment for persons who do not live near cancer centers, so that they receive the same degree of care as those receiving chronic HIV care today.
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Affiliation(s)
- Clement A. Adebamowo
- Office of Research and Training, Institute of Human Virology Nigeria, Abuja, Nigeria, and Department of Epidemiology and Public Health, Institute of Human Virology and Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD
| | - Corey Casper
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Kishor Bhatia
- AIDS Malignancy Program, Office of HIV and AIDS Malignancy, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Sam M. Mbulaiteye
- Infections and Immunoepidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Rockville, MD
| | - Annie J. Sasco
- Centre INSERM U 897-Epidémiologie-Biostatistique, Université de Bordeaux, Inserm U 897-Epidémiologie et Biostatistiques, L’Institut de Santé Publique, d’Épidémiologie et de Développement de l’Université de Bordeaux, Bordeaux, France
| | - Warren Phipps
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Sten H. Vermund
- Institute of Global Health and Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN
| | - Susan E. Krown
- AIDS Malignancy Consortium and Memorial Sloan-Kettering Cancer Center (emerita), New York, NY
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Kim MH, Seo JH, Kim HM, Jeong HJ. Zinc oxide nanoparticles, a novel candidate for the treatment of allergic inflammatory diseases. Eur J Pharmacol 2014; 738:31-9. [DOI: 10.1016/j.ejphar.2014.05.030] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/28/2014] [Accepted: 05/10/2014] [Indexed: 12/21/2022]
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