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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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Zhang C, Su H, Waight E, Poluektova LY, Gorantla S, Gendelman HE, Dash PK. Accelerated Neuroimmune Dysfunction in Aged HIV-1-Infected Humanized Mice. Pharmaceuticals (Basel) 2024; 17:149. [PMID: 38399364 PMCID: PMC10892358 DOI: 10.3390/ph17020149] [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: 12/21/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/25/2024] Open
Abstract
Disordered immunity, aging, human immunodeficiency virus type one (HIV-1) infection, and responses to antiretroviral therapy are linked. However, how each factor is linked with the other(s) remains incompletely understood. It has been reported that accelerated aging, advanced HIV-1 infection, inflammation, and host genetic factors are associated with host cellular, mitochondrial, and metabolic alterations. However, the underlying mechanism remains elusive. With these questions in mind, we used chronically HIV-1-infected CD34-NSG humanized mice (hu-mice) to model older people living with HIV and uncover associations between HIV-1 infection and aging. Adult humanized mice were infected with HIV-1 at the age of 20 weeks and maintained for another 40 weeks before sacrifice. Animal brains were collected and subjected to transcriptomics, qPCR, and immunofluorescence assays to uncover immune disease-based biomarkers. CD4+ T cell decline was associated with viral level and age. Upregulated C1QA, CD163, and CXCL16 and downregulated LMNA and CLU were identified as age-associated genes tied to HIV-1 infection. Ingenuity pathway analysis affirmed links to innate immune activation, pyroptosis signaling, neuroinflammation, mitochondrial dysfunction, cellular senescence, and neuronal dysfunction. In summary, CD34-NSG humanized mice are identified as a valuable model for studying HIV-1-associated aging. Biomarkers of immune senescence and neuronal signaling are both age- and virus-associated. By exploring the underlying biological mechanisms that are linked to these biomarkers, interventions for next generation HIV-1-infected patients can be realized.
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Affiliation(s)
| | | | | | | | | | | | - Prasanta K. Dash
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Pawar P, Gokavi J, Wakhare S, Bagul R, Ghule U, Khan I, Ganu V, Mukherjee A, Shete A, Rao A, Saxena V. MiR-155 Negatively Regulates Anti-Viral Innate Responses among HIV-Infected Progressors. Viruses 2023; 15:2206. [PMID: 38005883 PMCID: PMC10675553 DOI: 10.3390/v15112206] [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] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 11/26/2023] Open
Abstract
HIV infection impairs host immunity, leading to progressive disease. An anti-retroviral treatment efficiently controls viremia but cannot completely restore the immune dysfunction in HIV-infected individuals. Both host and viral factors determine the rate of disease progression. Among the host factors, innate immunity plays a critical role; however, the mechanism(s) associated with dysfunctional innate responses are poorly understood among HIV disease progressors, which was investigated here. The gene expression profiles of TLRs and innate cytokines in HIV-infected (LTNPs and progressors) and HIV-uninfected individuals were examined. Since the progressors showed a dysregulated TLR-mediated innate response, we investigated the role of TLR agonists in restoring the innate functions of the progressors. The stimulation of PBMCs with TLR3 agonist-poly:(I:C), TLR7 agonist-GS-9620 and TLR9 agonist-ODN 2216 resulted in an increased expression of IFN-α, IFN-β and IL-6. Interestingly, the expression of IFITM3, BST-2, IFITM-3, IFI-16 was also increased upon stimulation with TLR3 and TLR7 agonists, respectively. To further understand the molecular mechanism involved, the role of miR-155 was explored. Increased miR-155 expression was noted among the progressors. MiR-155 inhibition upregulated the expression of TLR3, NF-κB, IRF-3, TNF-α and the APOBEC-3G, IFITM-3, IFI-16 and BST-2 genes in the PBMCs of the progressors. To conclude, miR-155 negatively regulates TLR-mediated cytokines as wel l as the expression of host restriction factors, which play an important role in mounting anti-HIV responses; hence, targeting miR-155 might be helpful in devising strategic approaches towards alleviating HIV disease progression.
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Affiliation(s)
- Puja Pawar
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Jyotsna Gokavi
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Shilpa Wakhare
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Rajani Bagul
- Division of Clinical Sciences, ICMR-National AIDS Research Institute, Pune 411026, India; (R.B.); (U.G.); (A.R.)
| | - Ujjwala Ghule
- Division of Clinical Sciences, ICMR-National AIDS Research Institute, Pune 411026, India; (R.B.); (U.G.); (A.R.)
| | - Ishrat Khan
- Division of Virology, ICMR-National AIDS Research Institute, Pune 411026, India; (I.K.); (A.M.)
| | - Varada Ganu
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Anupam Mukherjee
- Division of Virology, ICMR-National AIDS Research Institute, Pune 411026, India; (I.K.); (A.M.)
| | - Ashwini Shete
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Amrita Rao
- Division of Clinical Sciences, ICMR-National AIDS Research Institute, Pune 411026, India; (R.B.); (U.G.); (A.R.)
| | - Vandana Saxena
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
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Qi H, Qin L, Li Y, Jin F, Kang Z, Hou J, Wang Y. A 16-color full spectrum flow cytometric analysis for comprehensive evaluation of T-cell reconstitution in SIV-infected rhesus macaques. J Immunol Methods 2023; 514:113404. [PMID: 36496008 DOI: 10.1016/j.jim.2022.113404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/01/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
T-cell reconstitution is central in human immunodeficiency virus (HIV) infection/disease progression. Simian immunodeficiency virus (SIV)-infected rhesus macaques (Macaca mulatta) have been the most widely used animal model for HIV research so far. An effective flow cytometry panel is crucial for monitoring the T cell reconstitution in SIV infection progression. We developed this sixteen-color flow cytometry-based panel for a T cell subsets analysis by manual gating and, once successfully gated, to characterize T cells function in-depth in rhesus macaques. This panel included markers to characterize CD4+ T cells and CD8+ T cells, T regulatory cells (Tregs), and T cell differentiation status (CD45RA and CCR7). Additionally, we included antibodies that measure T cell activation and proliferation molecules (CD69, HLA-DR, CD38 and Ki67), antibodies that examine the expressions of key PD-1 pathway molecule (PD-1), SIV potential target (CD32) and the primary SIV co-receptor CCR5 (CD195). High-dimensional single cell analysis was also performed to identify CD3+ T cells immunophenotypes of SIV-infected rhesus macaques. We designed this panel to evaluate the responses of different T cell subsets to SIV in whole blood from SIV-infected rhesus macaques.
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Affiliation(s)
- Hemei Qi
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
| | - Li Qin
- CAS Lamvac (Guangzhou) Biomedical Technology CO.,Ltd., Guangzhou 510663, China
| | - Yuefeng Li
- Landao Biotech Co., Ltd, Guangzhou 510555, China
| | - Fujun Jin
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Zhongkui Kang
- CAS Lamvac (Guangzhou) Biomedical Technology CO.,Ltd., Guangzhou 510663, China
| | - Jianghou Hou
- Kunming City Matermal and Child Health Hospital, Kunming 650013, China.
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
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Santana DS, Silva MJA, de Marin ABR, Costa VLDS, Sousa GSM, de Sousa JG, Silva DC, da Cruz EC, Lima LNGC. The Influence Between C-C Chemokine Receptor 5 Genetic Polymorphisms and the Type-1 Human Immunodeficiency Virus: A 20-Year Review. AIDS Res Hum Retroviruses 2023; 39:13-32. [PMID: 36226448 PMCID: PMC9889015 DOI: 10.1089/aid.2022.0111] [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] [Indexed: 02/04/2023] Open
Abstract
Acquired immune deficiency syndrome (AIDS) is an infectious disease caused by the types 1 and 2 human immunodeficiency virus (HIV-1 and HIV-2). Clinical outcomes in patients are highly varied and delineated by complex interactions between virus, host, and environment, such as with help of co-receptors, for example, the C-C chemokine receptor 5 (CCR5). This work aimed to describe the scientific evidence relating the influence of CCR5 polymorphisms in association studies for HIV-1 disease susceptibility, severity, and transmissibility. This is a systematic review of the literature on single nucleotide polymorphisms (SNPs) and the deletion [Insertion and Deletion (Indel)] Δ32 of CCR5. The search for articles was based on the ScienceDirect, PubMed, and Coordination for the Improvement of Higher Education Personnel (CAPES) databases for the period between 2001 and 2021. The final sample consisted of 32 articles. †SNP rs1799987 is one of the genetic polymorphisms most associated with the criteria of susceptibility and severity of HIV-1, having distinct consequences in genotypic, allelic, and clinical analysis in the variability of investigated populations. As for the transmission character of the disease, the G mutant allele of rs1799987 corresponds to the highest positive association. ‡Furthermore, the results on Indel Δ32 corroborate the absence and rarity of this variant in some populations. Finally, mitigating the severity of cases, SNPs rs1799988 and rs1800023 obtained significant attribution in individuals in the studied populations. It is shown that the reported polymorphisms express significant influences for the evaluation of diagnostic, therapeutic, and prophylactic measures for HIV-1 having fundamental particularities in the molecular, genetic, and transcriptional aspects of CCR5.
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Affiliation(s)
- Davi Silva Santana
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
| | - Marcos Jessé Abrahão Silva
- Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua, Brazil.,Address correspondence to: Marcos Jessé Abrahão Silva, Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua, Brazil
| | | | | | | | | | - Dihago Cardoso Silva
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
| | - Eliete Costa da Cruz
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
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Mpofu R, Otwombe K, Mlisana K, Nchabeleng M, Allen M, Kublin J, McElrath MJ, Bekker LG, Churchyard G, Gray G, Laher F. Benign ethnic neutropenia in a South African population, and its association with HIV acquisition and adverse event reporting in an HIV vaccine clinical trial. PLoS One 2021; 16:e0241708. [PMID: 33481787 PMCID: PMC7822320 DOI: 10.1371/journal.pone.0241708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 10/18/2020] [Indexed: 11/18/2022] Open
Abstract
Benign ethnic neutropenia (BEN) is defined as a neutrophil count of <1.5×109 cells/L in healthy individuals and is more common in populations of certain ethnicities, e.g. African or Middle Eastern ethnicity. Neutrophil values are commonly included in eligibility criteria for research participation, but little is known about the relationship between BEN, HIV acquisition, and the occurrence of adverse events during clinical trials. We investigated these relationships using data from an HIV vaccine efficacy trial of healthy adults from 5 South African sites. We analysed data from the double-blind, placebo-controlled, randomized trial HVTN 503, and its follow-on study HVTN 503-S to assess the prevalence of BEN, its association with HIV infection, and adverse event reporting. These data were then compared with a time- and age-matched, non-pregnant cohort from the National Health and Nutrition Examination Survey (NHANES) conducted between 2007–2008 in the United States (US). The 739 South African participants had a median age of 22.0 years (interquartile range = 20–26) and 56% (n = 412) were male. Amongst the US cohort of 845 participants, the median age was 26 (IQR: 21–30) and the majority (54%, 457/745) were also male. BEN was present at enrolment in 7.0% (n = 52) of South African participants (6% in the placebo group versus 8% in the vaccine group); 81% (n = 42) of those with BEN were male. Pretoria North had the highest prevalence of BEN (11.6%, 5/43), while Cape Town had the lowest (0.7%, 1/152). Participants with BEN had a lower median neutrophil count (1.3 vs. 3.2x109 cells/L; p<0.001) and BMI (20.8 vs. 22.3 kg/m2; p<0.001) when compared to those without BEN. A greater proportion of Black South Africans had neutrophil counts <1.5×109 cells/L compared to US non-Hispanic Whites from the NHANES cohort (7% [52/739] vs. 0.6% [3/540]; p<0.001). BEN did not increase the odds for HIV infection (adjusted odds ratio [aOR]: 1.364, 95% confidence interval [95% CI]: 0.625–2.976; p = 0.4351). However, female gender (aOR: 1.947, 95% CI: 1.265–2.996; p = 0.0025) and cannabis use (aOR: 2.192, 95% CI: 1.126–4.266; p = 0.0209) increased the odds of HIV acquisition. The incidence rates of adverse events were similar between participants in the placebo group with BEN, and those without: 12.1 (95% CI: 7.3–20.1) vs. 16.5 (95% CI: 14.6–18.7; p = 0.06) events per 100 person-years (py) were noted in the infections and infestations system organ class, respectively. The vaccine group had an event incidence rate of 19.7 (95% CI: 13.3–29.2) vs. 14.8 (95% CI: 13.0–16.8; p = 0.07) events per 100py in the group with, and without BEN, respectively. BEN is more prevalent in Black South Africans compared to US Non-Hispanic Whites. Our data do not support excluding populations from HIV vaccine trials because of BEN. BEN was not associated with increased risk for HIV infection or Adverse events on a vaccine trial. Predictors of HIV infection risk were females and cannabis use, underlying the continued importance of prevention programmes in focusing on these populations.
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Affiliation(s)
- Rephaim Mpofu
- Faculty of Health Sciences, Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, South Africa
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
- * E-mail:
| | - Kennedy Otwombe
- Faculty of Health Sciences, Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, South Africa
- Faculty of Health Sciences, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa
| | - Koleka Mlisana
- National Health Laboratory Service (NHLS), Cape Town, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Johannesburg, South Africa
| | - Maphoshane Nchabeleng
- Mecru Clinical Research Unit, Sefako Makgatho Health Sciences University, Pretoria, South Africa
| | - Mary Allen
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - James Kublin
- Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - M. Juliana McElrath
- Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Linda-Gail Bekker
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, South Africa
| | | | - Glenda Gray
- Faculty of Health Sciences, Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, South Africa
- South African Medical Research Council, Cape Town, South Africa
| | - Fatima Laher
- Faculty of Health Sciences, Perinatal HIV Research Unit, University of Witwatersrand, Johannesburg, South Africa
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Association of maternal and infant inflammation with neurodevelopment in HIV-exposed uninfected children in a South African birth cohort. Brain Behav Immun 2021; 91:65-73. [PMID: 32860940 PMCID: PMC7772888 DOI: 10.1016/j.bbi.2020.08.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/07/2020] [Accepted: 08/23/2020] [Indexed: 12/23/2022] Open
Abstract
HIV-exposed uninfected (HEU) children may have altered immune regulation and poorer neurodevelopment outcomes compared to their HIV-unexposed (HU) counterparts. However, studies investigating the association of maternal and infant inflammation with neurodevelopment in HEU children are limited and longitudinal data are lacking. This study investigated serum inflammatory markers in women living with HIV vs. HIV-uninfected women during pregnancy and in their children, as well as associations with neurodevelopmental outcomes at two years of age in an African birth cohort study. A sub-group of mother-child dyads from the Drakenstein Child Health Study had serum inflammatory markers measured at ≈26 week's gestation (n = 77 HIV-infected mothers; n = 190 HIV-uninfected mothers), at 6-10 weeks (n = 63 HEU infants and n = 159 HU infants) and at 24-28 months (n = 77 HEU children and n = 190 HU children). Serum inflammatory markers [granulocyte-macrophage colony-stimulating factor (GM-CSF), interferon-γ (IFN-γ), interleukin IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12p70, IL-13, tumor necrosis factor-α (TNF-α), neutrophil gelatinase-associated lipocalin (NGAL) and metalloproteinase-9 (MMP-9)] were analyzed with a multiplex bead array and ELISA assays. The Bayley Scales of Infant and Toddler Development, third edition, was used to assess neurodevelopment at 24-28 months. After correcting for multiple comparisons, HIV infection during pregnancy was associated with lower serum levels of inflammatory markers in mothers at 26 weeks gestation (GM-CSF and MMP-9, p < 0.05) and HEU children at 6-10 weeks (IFN-γ and IL-1β, p < 0.01), and at 24-28 months (IFN-γ, IL-1β, IL-2 and IL-4, p < 0.05) compared to HIV-uninfected mothers and HU children. In HEU infants at 6-10 weeks, inflammatory markers (GM-CSF, IFN-γ, IL-10, IL-12p70, IL-1β, IL-2, IL-4, IL-6 and NGAL, all p < 0.05) were associated with poorer motor function at two years of age. This is the first study to evaluate the associations of follow-up immune markers in HEU children with neurodevelopment. These findings suggest that maternal HIV infection is associated with immune dysregulation in mothers and their children through two years of age. An altered immune system in HEU infants is associated with poorer follow-up motor neurodevelopment. These data highlight the important role of the immune system in early neurodevelopment and provide a foundation for future research.
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Immune Checkpoints in Viral Infections. Viruses 2020; 12:v12091051. [PMID: 32967229 PMCID: PMC7551039 DOI: 10.3390/v12091051] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/13/2022] Open
Abstract
As evidence has mounted that virus-infected cells, such as cancer cells, negatively regulate the function of T-cells via immune checkpoints, it has become increasingly clear that viral infections similarly exploit immune checkpoints as an immune system escape mechanism. Although immune checkpoint therapy has been successfully used in cancer treatment, numerous studies have suggested that such therapy may also be highly relevant for treating viral infection, especially chronic viral infections. However, it has not yet been applied in this manner. Here, we reviewed recent findings regarding immune checkpoints in viral infections, including COVID-19, and discussed the role of immune checkpoints in different viral infections, as well as the potential for applying immune checkpoint blockades as antiviral therapy.
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Linnerz T, Hall CJ. The Diverse Roles of Phagocytes During Bacterial and Fungal Infections and Sterile Inflammation: Lessons From Zebrafish. Front Immunol 2020; 11:1094. [PMID: 32582182 PMCID: PMC7289964 DOI: 10.3389/fimmu.2020.01094] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/06/2020] [Indexed: 12/23/2022] Open
Abstract
The immediate and natural reaction to both infectious challenges and sterile insults (wounds, tissue trauma or crystal deposition) is an acute inflammatory response. This inflammatory response is mediated by activation of the innate immune system largely comprising professional phagocytes (neutrophils and macrophages). Zebrafish (danio rerio) larvae possess many advantages as a model organism, including their genetic tractability and highly conserved innate immune system. Exploiting these attributes and the live imaging potential of optically transparent zebrafish larvae has greatly contributed to our understanding of how neutrophils and macrophages orchestrate the initiation and resolution phases of inflammatory responses. Numerous bacterial and fungal infection models have been successfully established using zebrafish as an animal model and studies investigating neutrophil and macrophage behavior to sterile insults have also provided unique insights. In this review we highlight how examining the larval zebrafish response to specific bacterial and fungal pathogens has uncovered cellular and molecular mechanisms behind a variety of phagocyte responses, from those that protect the host to those that are detrimental. We also describe how modeling sterile inflammation in larval zebrafish has provided an opportunity to dissect signaling pathways that control the recruitment, and fate, of phagocytes at inflammatory sites. Finally, we briefly discuss some current limitations, and opportunities to improve, the zebrafish model system for studying phagocyte biology.
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Affiliation(s)
- Tanja Linnerz
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Christopher J Hall
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
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Nieuwoudt L, Rodseth RN, Marais LC. Fracture-related infections in HIV infected patients: A systematic review and meta-analysis. J Orthop 2020; 18:248-254. [PMID: 32071513 DOI: 10.1016/j.jor.2020.01.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 01/19/2020] [Indexed: 02/02/2023] Open
Abstract
Aim To conduct a systematic review and meta-analysis comparing the incidence of fracture-related infections (FRI) following surgical management of closed and open fractures in HIV-positive and HIV-negative patients. Methods A systematic literature search was conducted using MEDLINE, ProQuest, Web of Science, The Cochrane Library and Scopus. Our own files and reference lists of identified key articles were also searched. We included studies where the primary outcome was the development of FRI in patients with open and closed fractures. Results Eleven studies were included for data synthesis. HIV-positive patients had a non-significant increase in FRI when compared to HIV-negative patients (in open and closed fractures combined). Open fractures treated in the pre-antiretroviral era had a 5.6 times greater risk for developing a FRI. In the post-antiretroviral era (1997 onwards) HIV-positive patients did not have a greater risk of FRI than HIV-negative patients for both open and closed fractures. The small retrospective natures of these studies, together with the heterogeneous outcome definitions used, are limitations to this study. Conclusion While there are few large prospective studies, the available data suggests that before the introduction antiretroviral therapy HIV infection was associated with a greater risk of FRI. In the post-antiretroviral era HIV infected patients did not show an increased risk of FRI.
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Affiliation(s)
- Luan Nieuwoudt
- Tumour, Sepsis & Reconstruction Unit, Grey's Hospital, Pietermaritzburg, 3201, KwaZulu-Natal, South Africa
| | - Reitze N Rodseth
- Department Anaesthetics, Critical Care and Pain Management, University of KwaZulu-Natal, Pietermaritzburg, South Africa.,Jones, Bhagwan and Partners, Pietermaritzburg, South Africa
| | - Leonard Charles Marais
- Department Orthopaedics, School of Clinical Medicine, University of KwaZulu-Natal, KwaZulu-Natal, South Africa
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11
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Ceccarani C, Marangoni A, Severgnini M, Camboni T, Laghi L, Gaspari V, D'Antuono A, Foschi C, Re MC, Consolandi C. Rectal Microbiota Associated With Chlamydia trachomatis and Neisseria gonorrhoeae Infections in Men Having Sex With Other Men. Front Cell Infect Microbiol 2019; 9:358. [PMID: 31681634 PMCID: PMC6813206 DOI: 10.3389/fcimb.2019.00358] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 10/02/2019] [Indexed: 01/02/2023] Open
Abstract
Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) represent the most common agents of sexually transmitted rectal infections among men having sex with other men (MSM). In this study, we assessed the bacterial composition of the rectal microbiota associated with CT and/or NG infections in a cohort of men reporting unsafe rectal intercourse. A total of 125 rectal swabs were collected and four groups were compared: non-infected subjects (n = 53), patients with CT (n = 37), or NG rectal infection (n = 17) and patients with contemporary positivity for CT/NG (n = 18). CT and NG infections were detected by a real-time commercial test and the rectal microbiota composition was analyzed from rectal swabs through sequencing of the hypervariable V3-V4 regions of the 16S rRNA gene. The rectal microbiota of all subgroups was dominated by Prevotellaceae, Enterobacteriaceae, and Ruminococcaceae families. Irrespective of the analyzed subgroup, we found that the rectal environment of all the enrolled MSM was rich in Prevotella and Escherichia genera. Moreover, a shift in the bacterial composition between patients with sexually transmitted rectal infections and controls was noticed: infected patients were characterized by a depletion of Escherichia species, associated with an increase of anaerobic genera, including Peptoniphilus, Peptostreptococcus, and Parvimonas. Overall, the presence of rectal symptoms did not significantly modify the rectal microbiota profiles among the four groups of analyzed patients. We confirmed that HIV-positive patients are characterized by a lower bacterial richness than HIV-negative subjects. However, we found that the presence of HIV has a different impact on bacterial rectal communities compared to CT and NG infections, modifying the relative abundance of several genera, including Gardnerella, Lactobacillus, Corynebacterium, and Sutterella. Information about the rectal microbiota composition in CT and NG infections could shed light on the pathogenesis of these conditions and could contribute to the onset of new strategies for their control.
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Affiliation(s)
- Camilla Ceccarani
- National Research Council, Institute of Biomedical Technologies, Milan, Italy.,Department of Health Sciences, University of Milan, Milan, Italy
| | | | - Marco Severgnini
- National Research Council, Institute of Biomedical Technologies, Milan, Italy
| | - Tania Camboni
- National Research Council, Institute of Biomedical Technologies, Milan, Italy
| | - Luca Laghi
- Department of Agro-Food Science and Technology, Centre of Foodomics, University of Bologna, Cesena, Italy
| | | | | | - Claudio Foschi
- Microbiology, DIMES, University of Bologna, Bologna, Italy
| | - Maria Carla Re
- Microbiology, DIMES, University of Bologna, Bologna, Italy
| | - Clarissa Consolandi
- National Research Council, Institute of Biomedical Technologies, Milan, Italy
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12
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Masenga SK, Hamooya BM, Nzala S, Kwenda G, Heimburger DC, Mutale W, Koethe JR, Kirabo A, Munsaka SM. HIV, immune activation and salt-sensitive hypertension (HISH): a research proposal. BMC Res Notes 2019; 12:424. [PMID: 31311574 PMCID: PMC6636142 DOI: 10.1186/s13104-019-4470-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/11/2019] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE The objective of this study is to quantify and compare the effect of excess dietary salt on immune cell activation and blood pressure in HIV versus HIV negative individuals. RESULTS Salt-sensitivity is associated with increased immune cell activation in animal studies. This concept has not been tested in people living with HIV. This study will therefore add more information in elucidating the interaction between HIV infection and/or anti-retroviral therapy (ART), immune-activation/inflammation and hypertension.
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Affiliation(s)
- Sepiso K. Masenga
- School of Medicine and Health Sciences, Mulungushi University, Livingstone, Zambia
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
- Vanderbilt Institute for Global Health, Nashville, TN USA
| | - Benson M. Hamooya
- School of Medicine and Health Sciences, Mulungushi University, Livingstone, Zambia
- Department of Epidemiology and Biostatistics, School of Public Health, University of Zambia, Lusaka, Zambia
| | - Selestine Nzala
- Department of Medical Education Development, University of Zambia, Lusaka, Zambia
| | - Geoffrey Kwenda
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | | | - Wilbroad Mutale
- Department of Health Policy and Management, School of Public Health, University of Zambia, Lusaka, Zambia
| | - John R. Koethe
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN USA
| | - Annet Kirabo
- Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN USA
| | - Sody M. Munsaka
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
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13
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Masenga SK, Hamooya BM, Nzala S, Kwenda G, Heimburger DC, Mutale W, Munsaka SM, Koethe JR, Kirabo A. Patho-immune Mechanisms of Hypertension in HIV: a Systematic and Thematic Review. Curr Hypertens Rep 2019; 21:56. [PMID: 31165257 PMCID: PMC6548744 DOI: 10.1007/s11906-019-0956-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE OF REVIEW To systematically review recent findings on the role of immune cell activation in the pathogenesis of hypertension in people living with HIV (PLWH) and compare studies from Sub-Saharan Africa with what is reported in the USA and European literature according to guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. RECENT FINDINGS PLWH have an increased risk for development of hypertension and cardiovascular disease. Chronic immune activation contributes to hypertension but the inflammatory milieu that predisposes PLWH to hypertension is poorly understood. We identified 45 relevant studies from 13 unique African countries. The prevalence of hypertension in PLWH on antiretroviral therapy (ART) and the ART-naive PLWH ranged from 6 to 50% and 2 to 41%, respectively. Interleukin (IL)-17A, interferon (IFN)-γ, and higher CD4+ T cell counts were associated with hypertension in ART-treated participants. Targeting adaptive immune activation could provide improved care for hypertensive PLWH. Further research is needed to characterize the inflammatory milieu contributing to hypertension in PLWH especially in African populations where the global burden of HIV is the highest.
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Affiliation(s)
- Sepiso K. Masenga
- School of Medicine and Health Sciences, Mulungushi University, Livingstone, Zambia
- School of Health Sciences, Department of Biomedical Sciences, University of Zambia, Lusaka, Zambia
- Vanderbilt Institute for Global Health, Nashville, TN USA
| | - Benson M. Hamooya
- School of Medicine and Health Sciences, Mulungushi University, Livingstone, Zambia
- School of Public Health, Department of Epidemiology and Biostatistics, University of Zambia, Lusaka, Zambia
| | - Selestine Nzala
- Department of Medical Education Development, University of Zambia, Lusaka, Zambia
| | - Geoffrey Kwenda
- School of Health Sciences, Department of Biomedical Sciences, University of Zambia, Lusaka, Zambia
| | | | - Wilbroad Mutale
- School of Public Health, Department of Health policy and Management, University of Zambia, Lusaka, Zambia
| | - Sody M. Munsaka
- School of Health Sciences, Department of Biomedical Sciences, University of Zambia, Lusaka, Zambia
| | - John R. Koethe
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN USA
| | - Annet Kirabo
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, 2215 Garland Avenue, P415C Medical Research Building IV, Nashville, TN 37232 USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN USA
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14
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Jin C, Cheng L, Lu X, Xie T, Wu H, Wu N. Elevated expression of miR-155 is associated with the differentiation of CD8+ T cells in patients with HIV-1. Mol Med Rep 2017. [PMID: 28627655 DOI: 10.3892/mmr.2017.6755] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The differentiation and response ofCD8+ T cells is vital in host defense against human immunodeficiency virus type 1 (HIV-1). MicroRNA (miR)‑155 is an important regulator of T cell differentiation. However, the profile of miR-155 in HIV‑1 infected individuals and its association with CD8+ T cell differentiation remain to be fully elucidated. The present cross‑sectional study was performed involving 63 HIV‑1‑infected patients undergoing highly active antiretroviral therapy (HAART), 31 HAART‑naïve patients and 35 healthy controls. The levels of miR‑155 in CD8+ T cells were detected using reverse transcription‑quantitative polymerase chain reaction analysis. Subsets of CD8+ T cell differentiation were detected using flow cytometry. The results revealed that the discord controllers and HAART‑naïve patients showed higher percentages of effector and effector memory cells, and lower percentages of naïve cells (P<0.05). The levels of miR‑155 in CD8+ T cells from the HIV‑1‑infected patients were higher, particularly in the discord controllers and HAART naïve patients (P<0.01). The expression levels of miR‑155 were positively correlated with the percentages of effector and effector memory CD8+ T cells, and negatively correlated with the percentages of naïve and central memory CD8+ T cells (P<0.01). Taken together, these findings suggested that the levels of miR‑155 in CD8+ T cells of patients with HIV-1 were increased and asso-ciated with CD8+ T cell differentiation.
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Affiliation(s)
- Changzhong Jin
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Linfang Cheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Xiangyun Lu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Tiansheng Xie
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Haibo Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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15
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Blazkova J, Boughorbel S, Presnell S, Quinn C, Chaussabel D. A curated transcriptome dataset collection to investigate the immunobiology of HIV infection. F1000Res 2016; 5:327. [PMID: 27134731 PMCID: PMC4838008 DOI: 10.12688/f1000research.8204.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/04/2016] [Indexed: 12/22/2022] Open
Abstract
Compendia of large-scale datasets available in public repositories provide an opportunity to identify and fill current gaps in biomedical knowledge. But first, these data need to be readily accessible to research investigators for interpretation. Here, we make available a collection of transcriptome datasets relevant to HIV infection. A total of 2717 unique transcriptional profiles distributed among 34 datasets were identified, retrieved from the NCBI Gene Expression Omnibus (GEO), and loaded in a custom web application, the Gene Expression Browser (GXB), designed for interactive query and visualization of integrated large-scale data. Multiple sample groupings and rank lists were created to facilitate dataset query and interpretation via this interface. Web links to customized graphical views can be generated by users and subsequently inserted in manuscripts reporting novel findings, such as discovery notes. The tool also enables browsing of a single gene across projects, which can provide new perspectives on the role of a given molecule across biological systems. This curated dataset collection is available at:
http://hiv.gxbsidra.org/dm3/geneBrowser/list.
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Affiliation(s)
| | | | - Scott Presnell
- Benaroya Research Institute, Research Technology, Seattle, WA, USA
| | - Charlie Quinn
- Benaroya Research Institute, Research Technology, Seattle, WA, USA
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16
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Losi M, Knights AJ, Mariani F, Altieri AM, Paone G, Loxton AG, Chegou NN, Kenneth J, Alma MG, Colizzi V, Walzl G, Saltini C, Boyle J, Amicosante M. QuantiFERON-TB performance enhanced by novel Mycobacterium tuberculosis-specific antigens. Eur Respir J 2015; 47:660-4. [PMID: 26585425 DOI: 10.1183/13993003.01015-2015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/17/2015] [Indexed: 01/17/2023]
Affiliation(s)
- Monica Losi
- Dept of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, Italy
| | | | - Francesca Mariani
- Institute of Cell Biology and Neurobiology, National Research Council, Rome, Italy
| | - Alfonso M Altieri
- Broncopneumologia e Tisiologia, Azienda Ospedaliera San Camillo Forlanini, Rome, Italy
| | - Gregorino Paone
- Dept of Cardiovascular, Respiratory, Nephrologic, Anesthesiologic and Geriatric Sciences, University of Rome "La Sapienza", Rome, Italy
| | - Andre G Loxton
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Novel N Chegou
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - John Kenneth
- Division of Infectious Diseases, St John's Research Institute, St John's National Academy of Health Sciences, Bangalore, India
| | - Mario G Alma
- Broncopneumologia e Tisiologia, Azienda Ospedaliera San Camillo Forlanini, Rome, Italy
| | | | - Gerhard Walzl
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Cesare Saltini
- Dept of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, Italy
| | - Jeff Boyle
- QIAGEN Sciences LLC, Germantown, MD, USA
| | - Massimo Amicosante
- Dept of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, Italy
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