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Kanmogne GD. HIV Infection, Antiretroviral Drugs, and the Vascular Endothelium. Cells 2024; 13:672. [PMID: 38667287 PMCID: PMC11048826 DOI: 10.3390/cells13080672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Endothelial cell activation, injury, and dysfunction underlies the pathophysiology of vascular diseases and infections associated with vascular dysfunction, including human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome. Despite viral suppression with combination antiretroviral therapy (ART), people living with HIV (PLWH) are prone to many comorbidities, including neurological and neuropsychiatric complications, cardiovascular and metabolic diseases, premature aging, and malignancies. HIV and viral proteins can directly contribute to the development of these comorbidities. However, with the continued high prevalence of these comorbidities despite viral suppression, it is likely that ART or some antiretroviral (ARVs) drugs contribute to the development and persistence of comorbid diseases in PLWH. These comorbid diseases often involve vascular activation, injury, and dysfunction. The purpose of this manuscript is to review the current literature on ARVs and the vascular endothelium in PLWH, animal models, and in vitro studies. I also summarize evidence of an association or lack thereof between ARV drugs or drug classes and the protection or injury/dysfunction of the vascular endothelium and vascular diseases.
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Affiliation(s)
- Georgette D Kanmogne
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5800, USA
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Havlickova K, Snopkova S, Pohanka M, Svacinka R, Vydrar D, Husa P, Zavrelova J, Zlamal F, Fabianova L, Penka M, Husa P. Oxidative stress, microparticles, and E-selectin do not depend on HIV suppression. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2024. [PMID: 38390755 DOI: 10.5507/bp.2024.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Oxidative stress and inflammation are considered predictors of diseases associated with aging. Markers of oxidative stress, inflammation, and endothelial activation were investigated in people with HIV on antiretroviral treatment to determine whether they had an immunosenescent phenotype that might predispose to the development of premature age-related diseases. PATIENTS AND METHODS This study was conducted on 213 subjects with HIV. The control groups consisted of healthy HIV-negative adults. The level of oxidative stress was measured by assessing the production of malondialdehyde levels, which were detected by thiobarbituric acid reactive substance (TBARS) assay. The level of microparticles indicated the presence of inflammation and endothelial activation was measured by E-selectin levels. Significant differences were determined by appropriate statistical tests, depending on the distribution of variables. Relationships between continuous variables were quantified using Spearman's rank correlation coefficient. RESULTS TBARS, and microparticle and E-selectin levels were significantly higher in untreated and treated subjects with HIV compared with HIV-negative controls (P<0.001). The levels of the investigated markers were not significantly different between untreated and treated patients and no significant correlation of these markers was found with CD4+ count, CD4+/CD8+ ratio, and the number of HIV-1 RNA copies. CONCLUSIONS Elevated markers of oxidative stress, inflammatory and endothelial activation were independent of the virologic and immunologic status of people with HIV. These results support the hypothesis that residual viremia in cellular reservoirs of various tissues is a key factor related to the premature aging of the immune system and predisposition to the premature development of diseases associated with aging.
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Fuentes P, Bernabeu E, Bertera F, Garces M, Oppezzo J, Zubillaga M, Evelson P, Jimena Salgueiro M, Moretton MA, Höcht C, Chiappetta DA. Dual strategy to improve the oral bioavailability of efavirenz employing nanomicelles and curcumin as a bio-enhancer. Int J Pharm 2024; 651:123734. [PMID: 38142017 DOI: 10.1016/j.ijpharm.2023.123734] [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] [Received: 09/03/2023] [Revised: 11/15/2023] [Accepted: 12/20/2023] [Indexed: 12/25/2023]
Abstract
The present investigation was focused on the development of Soluplus®-based nanomicelles (NMs) (10 % w/v) loaded with Efavirenz (EFV) (5 mg/mL) and Curcumin (natural bio-enhancer) (CUR) (5, 10 and 15 mg/mL) to improve the oral bioavalability of EFV. Micellar formulations were obtained employing an acetone-diffusion technique. Apparent aqueous solubility was increased up to ∼1250-fold and 25,000-fold for EFV and CUR, respectively. Drug-loaded nanoformulations showed an excellent colloidal stability with unimodal size distribution and PDI values < 0.30. In vitro drug release was 41.5 % (EFV) and 2.6 % (CUR) from EFV-CUR-NMs over 6 h in simulated gastrointestinal fluids. EFV-CUR-loaded NMs resulted as safe nanoformulations according to the in vitro cytocompatibility assays in Caco-2 cells. Furthermore, CUR bio-enhancer activity was demonstrated for those nanoformulations. A CUR concentration of 15 mg/mL produced a significant (p < 0.05) increment (2.64-fold) of relative EFV oral bioavailability. Finally, the active role of the lymphatic system in the absorption process of EFV, after its oral administration was assessed in a comparative pharmacokinetic study in presence and absence of cycloheximide, a lymphatic transport inhibitor. Overall our EFV-CUR-NMs denoted their potential as a novel nanotechnological platform, representing a step towards an optimized "nano-sized" therapy for AIDS patients.
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Affiliation(s)
- Pedro Fuentes
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina
| | - Ezequiel Bernabeu
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Facundo Bertera
- Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacología, Buenos Aires, Argentina
| | - Mariana Garces
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Química General e Inorgánica, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Facultad de Farmacia y Bioquímica, Argentina
| | - Javier Oppezzo
- Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacología, Buenos Aires, Argentina
| | - Marcela Zubillaga
- Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina
| | - Pablo Evelson
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Química General e Inorgánica, Argentina; Universidad de Buenos Aires, CONICET, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Facultad de Farmacia y Bioquímica, Argentina
| | - María Jimena Salgueiro
- Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina
| | - Marcela A Moretton
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
| | - Christian Höcht
- Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Farmacología, Buenos Aires, Argentina
| | - Diego A Chiappetta
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Tecnología Farmacéutica y Biofarmacia (InTecFyB), Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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Mitochondrial Lon-induced mitophagy benefits hypoxic resistance via Ca 2+-dependent FUNDC1 phosphorylation at the ER-mitochondria interface. Cell Death Dis 2023; 14:199. [PMID: 36927870 PMCID: PMC10020552 DOI: 10.1038/s41419-023-05723-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 02/18/2023] [Accepted: 03/03/2023] [Indexed: 03/18/2023]
Abstract
During hypoxia, FUNDC1 acts as a mitophagy receptor and accumulates at the ER (endoplasmic reticulum)-mitochondria contact sites (EMC), also called mitochondria-associated membranes (MAM). In mitophagy, the ULK1 complex phosphorylates FUNDC1(S17) at the EMC site. However, how mitochondria sense the stress and send the signal from the inside to the outside of mitochondria to trigger mitophagy is still unclear. Mitochondrial Lon was reported to be localized at the EMC under stress although the function remained unknown. In this study, we explored the mechanism of how mitochondrial sensors of hypoxia trigger and stabilize the FUNDC1-ULK1 complex by Lon in the EMC for cell survival and cancer progression. We demonstrated that Lon is accumulated in the EMC and associated with FUNDC1-ULK1 complex to induce mitophagy via chaperone activity under hypoxia. Intriguingly, we found that Lon-induced mitophagy is through binding with mitochondrial Na+/Ca2+ exchanger (NCLX) to promote FUNDC1-ULK1-mediated mitophagy at the EMC site in vitro and in vivo. Accordingly, our findings highlight a novel mechanism responsible for mitophagy initiation under hypoxia by chaperone Lon in mitochondria through the interaction with FUNDC1-ULK1 complex at the EMC site. These findings provide a direct correlation between Lon and mitophagy on cell survival and cancer progression.
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Pereira LL, Veiga Siqueira Amorim D, Brito Sampaio W, Almeida Cruz Azevêdo T, Bispo Pereira Cardoso V, Barreto Lemos F, Silva Chang A, Machado F, Pereira Lima F, Sampaio Neves F, Leal Figueiredo AC. Factors Associated with Periodontitis in Patients with and without HIV. Int J Dent 2023; 2023:9929835. [PMID: 37159593 PMCID: PMC10163962 DOI: 10.1155/2023/9929835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 03/27/2023] [Accepted: 04/05/2023] [Indexed: 05/11/2023] Open
Abstract
Purpose The aim of this study was to compare clinical periodontal conditions in HIV-positive people on HAART with an HIV-negative group, in addition to investigating factors associated with periodontitis in the entire sample. Methods This was a cross-sectional study. Data were collected by oral clinical examination for the diagnosis of periodontitis, review of medical records, and application of a questionnaire containing personal data, deleterious habits, and oral hygiene habits for the other variables. The results were analyzed by Pearson's χ 2 test and Student's t-test. A logistic regression model was constructed for the multivariate analysis and periodontitis was defined as a dependent variable. The analysis was performed on the entire sample (HIV+ and HIV-) and also on the group consisting of only people living with HIV. Results Individuals older than 43 years old and with HIV were more likely to develop moderate and severe periodontitis (47.80 and 4.84 times, respectively). When analyzing only HIV+, in addition to age (OR = 2.795; CI = 1.080-7.233), the use of nonnucleoside reverse transcriptase inhibitors (NNRTIs) (OR = 2.841; CI = 1.135-7.112) was also associated with moderate and severe periodontitis. Conclusion It was possible to observe a higher prevalence of periodontitis among individuals with HIV, showing an association between the virus, advanced age, and moderate or severe periodontitis.
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Affiliation(s)
- Luanderson Lopes Pereira
- Postgraduate Program in Dentistry and Health, Federal University of Bahia (UFBA), Salvador, Brazil
| | | | - Willian Brito Sampaio
- Postgraduate Program in Dentistry and Health, Federal University of Bahia (UFBA), Salvador, Brazil
| | | | | | - Felipe Barreto Lemos
- Postgraduate Program in Dentistry and Health, Federal University of Bahia (UFBA), Salvador, Brazil
| | - Andressa Silva Chang
- Postgraduate Program in Dentistry and Health, Federal University of Bahia (UFBA), Salvador, Brazil
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Mavis Xhakaza N, Chokkareddy R, Redhi GG. Ionic Liquid Based Electrochemical Sensor for the Detection of Efavirenz. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Divergent effects of HIV reverse transcriptase inhibitors on pancreatic beta-cell function and survival: Potential role of oxidative stress and mitochondrial dysfunction. Life Sci 2022; 294:120329. [PMID: 35090905 DOI: 10.1016/j.lfs.2022.120329] [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: 10/01/2021] [Revised: 01/04/2022] [Accepted: 01/10/2022] [Indexed: 11/23/2022]
Abstract
Antiretroviral therapy (ART), a life-saving treatment strategy in HIV/AIDS, has been implicated in increasing the risk of type 2 diabetes mellitus (T2DM). Direct damaging effects on beta-cell function and survival by either non-nucleoside reverse transcriptase inhibitors (NNRTIs) or nucleoside/tide reverse transcriptase inhibitors (NRTIs) may predispose individuals to developing T2DM or if already type 2 diabetic, to insulin dependency. The aim of this study was to investigate the effects of the NNRTIs efavirenz, rilpivirine and doravirine, and the NRTIs tenofovir disoproxil fumarate and emtricitabine, on beta-cell function and survival while suggesting potential cellular and molecular mechanism(s). Our results show contrasting effects within the NNRTI class as doravirine did not cause damaging effects in the rat insulinoma INS-1E cells while efavirenz and rilpivirine reduced insulin release and cell viability, and induced apoptosis in INS-1E cells. Additionally, efavirenz and rilpivirine increased ROS generation, disrupted Δψm and upregulated the mRNA and protein expression of CHOP and GRP78, key markers of endoplasmic reticulum stress. In silico docking studies predict a possible inhibition of the mitochondrial ATP synthase by rilpivirine. On the contrary, both the NRTIs tenofovir disoproxil fumarate and emtricitabine did not affect GSIS, cell viability and apoptosis/necrosis levels in INS-1E cells. The deleterious effects observed in beta-cells exposed to efavirenz or rilpivirine may be, at least partially, mediated by oxidative stress and mitochondrial toxicity. These findings provide potential mechanism(s) by which efavirenz and rilpivirine may contribute to the pathogenesis of T2DM and the progression of T2DM to insulin dependency in HIV-infected type 2 diabetics.
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Islam RK, Donnelly E, Islam KN. Circulating Hydrogen Sulfide (H 2S) and Nitric Oxide (NO) Levels Are Significantly Reduced in HIV Patients Concomitant with Increased Oxidative Stress Biomarkers. J Clin Med 2021; 10:jcm10194460. [PMID: 34640478 PMCID: PMC8509794 DOI: 10.3390/jcm10194460] [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: 08/12/2021] [Accepted: 09/22/2021] [Indexed: 12/17/2022] Open
Abstract
Human immunodeficiency virus (HIV) attacks the immune system and weakens the ability to fight infections/disease. Furthermore, HIV infection confers approximately two-fold higher risk of cardiac events compared with the general population. The pathological mechanisms responsible for the increased incidence of cardiovascular disease in HIV patients are largely unknown. We hypothesized that increased oxidative stress and attenuated circulating levels of the cardioprotective gaseous signaling molecules, nitric oxide (NO), and hydrogen sulfide (H2S) were involved in the cardiovascular pathobiology observed in HIV patients. Plasma samples from both HIV patients and age-matched normal subjects were used for all assays. Oxidative stress was determined by analyzing the levels of advanced oxidation protein products (AOPP) and H2O2. Antioxidant levels were determined by measuring the levels of trolox equivalent capacity. ADMA, hs-CRP, and IL-6 were determined by using ELISA. The levels of H2S (free H2S and sulfane sulfur) and NO2 (nitrite) were determined in the plasma samples by using gas chromatography and HPLC, respectively. In the present study we observed a marked induction in the levels of oxidative stress and decreased antioxidant status in the plasma of HIV patients as compared with the controls. Circulating levels of the cardiovascular disease biomarkers: ADMA, hs-CRP (high-sensitivity C-reactive protein), and IL-6 were significantly increased in the circulatory system of HIV patients. The levels of both nitrite and H2S/sulfane sulfur were significantly reduced in the plasma of HIV patients as compared with normal subjects. Our data demonstrate significant increases in circulating biomarkers of oxidative stress and cardiovascular (CV) in conjunction with decreased bioavailability of H2S and NO in HIV patients. Diminished levels of these two cardioprotective gaseous signaling molecules may be involved in the pathogenesis of CV disease in the setting of HIV.
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Affiliation(s)
- Rahib K. Islam
- LSU Health Sciences Center, Department of Pharmacology, 1901 Perdido St., New Orleans, LA 70112, USA; (R.K.I.); (E.D.)
| | - Erinn Donnelly
- LSU Health Sciences Center, Department of Pharmacology, 1901 Perdido St., New Orleans, LA 70112, USA; (R.K.I.); (E.D.)
| | - Kazi N. Islam
- LSU Health Sciences Center, Department of Pharmacology, 1901 Perdido St., New Orleans, LA 70112, USA; (R.K.I.); (E.D.)
- Agricultural Research Development Program, College of Engineering, Science, Technology and Agriculture, Central State University, 1400 Brush Row Road, Wilberforce, OH 45384, USA
- Correspondence:
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Long-Term Administration of Abacavir and Etravirine Impairs Semen Quality and Alters Redox System and Bone Metabolism in Growing Male Wistar Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5596090. [PMID: 34373766 PMCID: PMC8349296 DOI: 10.1155/2021/5596090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/24/2021] [Accepted: 07/05/2021] [Indexed: 12/17/2022]
Abstract
Highly active antiretroviral therapy (HAART) is used in HIV-infected patients. Alongside the prolongation of patients' life, adverse side effects associated with long-term therapy are becoming an increasing problem. Therefore, optimizing of HAART is extremely important. The study is aimed at evaluating the toxicity of abacavir and etravirine in monotherapy on the reproductive system, liver, kidneys, and bones in young, sexually mature, male rats. Thirty-six 8-week-old male Wistar rats randomized into three 12-animal groups received either normal saline (control), abacavir 60 mg/kg (AB group), or etravirine 40 mg/kg (ET group) once daily for 16 weeks. Semen morphology, oxide-redox state parameters (MDA, SOD, catalase, GPx, glutathione, GSH/GSSG ratio) in tissue homogenates (testes, liver, kidneys), and serum samples were studied. In bones, microcomputed tomography and a four-point bending test were performed. Total sperm count, sperm concentration, motility, and sperm morphology did not differ significantly in AB or ET groups compared to the control. In the flow cytometry of semen, an increased percentage of cells with denatured DNA was noticed for both tested drugs. However, no significant changes of oxide-redox state in testicular homogenates were found, except of increased SOD activity in the AB-receiving group. Additionally, ET significantly altered catalase and GPx in the liver and SOD activity in kidneys. Abacavir decreased catalase in the liver and GSH levels in kidneys. AB caused significant changes to bone microarchitecture (bone volume fraction, trabecular number, connectivity density, total porosity) and increased Young's modulus. Etravirine had a greater impact on macrometric parameters of bones (tibial index, mid-tibial diameter, femur length). After 4 weeks in the ET group, a lower 1,25-dihydroxyvitamin D3 serum concentration was found. The results showed that abacavir and etravirine disturb oxidative stress. An increase in the percentage of sperms with chromatin damage suggests decreased fertility in rats receiving the studied drugs. Both drugs affected bone formation in growing rats. Additionally, etravirine disturbed vitamin D metabolism.
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Cheney L, Barbaro JM, Berman JW. Antiretroviral Drugs Impact Autophagy with Toxic Outcomes. Cells 2021; 10:cells10040909. [PMID: 33920955 PMCID: PMC8071244 DOI: 10.3390/cells10040909] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 01/18/2023] Open
Abstract
Antiretroviral drugs have dramatically improved the morbidity and mortality of people living with HIV (PLWH). While current antiretroviral therapy (ART) regimens are generally well-tolerated, risks for side effects and toxicity remain as PLWH must take life-long medications. Antiretroviral drugs impact autophagy, an intracellular proteolytic process that eliminates debris and foreign material, provides nutrients for metabolism, and performs quality control to maintain cell homeostasis. Toxicity and adverse events associated with antiretrovirals may be due, in part, to their impacts on autophagy. A more complete understanding of the effects on autophagy is essential for developing antiretroviral drugs with decreased off target effects, meaning those unrelated to viral suppression, to minimize toxicity for PLWH. This review summarizes the findings and highlights the gaps in our knowledge of the impacts of antiretroviral drugs on autophagy.
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Affiliation(s)
- Laura Cheney
- Division of Infectious Diseases, Department of Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA
- Correspondence: ; Tel.: +1-718-904-2587
| | - John M. Barbaro
- Department of Pathology, Montefiore Medical Center and Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA; (J.M.B.); (J.W.B.)
| | - Joan W. Berman
- Department of Pathology, Montefiore Medical Center and Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA; (J.M.B.); (J.W.B.)
- Department of Microbiology and Immunology, Montefiore Medical Center and Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA
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Singh S, Ghosh S, Pal VK, Munshi M, Shekar P, Narasimha Murthy DT, Mugesh G, Singh A. Antioxidant nanozyme counteracts HIV-1 by modulating intracellular redox potential. EMBO Mol Med 2021; 13:e13314. [PMID: 33793064 PMCID: PMC8103102 DOI: 10.15252/emmm.202013314] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 02/05/2021] [Accepted: 02/19/2021] [Indexed: 12/23/2022] Open
Abstract
Reactive oxygen species (ROS) regulates the replication of human immunodeficiency virus (HIV‐1) during infection. However, the application of this knowledge to develop therapeutic strategies remained unsuccessful due to the harmful consequences of manipulating cellular antioxidant systems. Here, we show that vanadium pentoxide (V2O5) nanosheets functionally mimic natural glutathione peroxidase activity to mitigate ROS associated with HIV‐1 infection without adversely affecting cellular physiology. Using genetic reporters of glutathione redox potential and hydrogen peroxide, we showed that V2O5 nanosheets catalyze ROS neutralization in HIV‐1‐infected cells and uniformly block viral reactivation and replication. Mechanistically, V2O5 nanosheets suppressed HIV‐1 by affecting the expression of pathways coordinating redox balance, virus transactivation (e.g., NF‐κB), inflammation, and apoptosis. Importantly, a combination of V2O5 nanosheets with a pharmacological inhibitor of NF‐κB (BAY11‐7082) abrogated reactivation of HIV‐1. Lastly, V2O5 nanosheets inhibit viral reactivation upon prostratin stimulation of latently infected CD4+ T cells from HIV‐infected patients receiving suppressive antiretroviral therapy. Our data successfully revealed the usefulness of V2O5 nanosheets against HIV and suggested nanozymes as future platforms to develop interventions against infectious diseases.
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Affiliation(s)
- Shalini Singh
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India.,Centre for Infectious Disease Research (CIDR), Indian Institute of Science, Bangalore, India
| | - Sourav Ghosh
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
| | - Virender Kumar Pal
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India.,Centre for Infectious Disease Research (CIDR), Indian Institute of Science, Bangalore, India
| | - MohamedHusen Munshi
- Centre for Infectious Disease Research (CIDR), Indian Institute of Science, Bangalore, India
| | - Pooja Shekar
- Bangalore Medical College and Research Institute, Bangalore, India
| | | | - Govindasamy Mugesh
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India
| | - Amit Singh
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, India.,Centre for Infectious Disease Research (CIDR), Indian Institute of Science, Bangalore, India
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Bertrand L, Velichkovska M, Toborek M. Cerebral Vascular Toxicity of Antiretroviral Therapy. J Neuroimmune Pharmacol 2021; 16:74-89. [PMID: 31209776 PMCID: PMC7952282 DOI: 10.1007/s11481-019-09858-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/27/2019] [Indexed: 01/14/2023]
Abstract
HIV infection is associated with comorbidities that are likely to be driven not only by HIV itself, but also by the toxicity of long-term use of antiretroviral therapy (ART). Indeed, increasing evidence demonstrates that the antiretroviral drugs used for HIV treatment have toxic effects resulting in various cellular and tissue pathologies. The blood-brain barrier (BBB) is a modulated anatomophysiological interface which separates and controls substance exchange between the blood and the brain parenchyma; therefore, it is particularly exposed to ART-induced toxicity. Balancing the health risks and gains of ART has to be considered in order to maximize the positive effects of therapy. The current review discusses the cerebrovascular toxicity of ART, with the focus on mitochondrial dysfunction. Graphical Abstract Graphical representation of the interactions between HIV, antiretroviral therapy (ART), and the blood-brain barrier (BBB).
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Affiliation(s)
- Luc Bertrand
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Bldg., Room 528, 1011 NW 15th Street, Miami, FL, 33136, USA
| | - Martina Velichkovska
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Bldg., Room 528, 1011 NW 15th Street, Miami, FL, 33136, USA
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Bldg., Room 528, 1011 NW 15th Street, Miami, FL, 33136, USA.
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Gutiérrez-Sevilla JE, Cárdenas-Bedoya J, Escoto-Delgadillo M, Zúñiga-González GM, Pérez-Ríos AM, Gómez-Meda BC, González-Enríquez GV, Figarola-Centurión I, Chavarría-Avila E, Torres-Mendoza BM. Genomic instability in people living with HIV. Mutat Res 2021; 865:503336. [PMID: 33865542 DOI: 10.1016/j.mrgentox.2021.503336] [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: 12/28/2020] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 01/06/2023]
Abstract
The increased life expectancy of people living with HIV (PLWH) receiving antiretroviral treatment (ART) has transformed HIV infection into a chronic disease. However, patients may be at risk of accelerated aging and the accumulation of cellular damage, which may trigger the development of cancer. We evaluated genomic instability in HIV-positive individuals with different viral loads receiving antiretroviral treatment (ART) and in HIV ART-naïve individuals. We included 67 participants divided into four groups: group 1 (n = 24) HIV patients receiving reverse-transcriptase inhibitors (tenofovir/ emtricitabine/ efavirenz and abacavir/ lamivudine/ efavirenz), group 2 (n = 22) HIV patients receiving protease inhibitors combined with other antiretroviral drugs (tenofovir/ emtricitabine with ritonavir/ atazanavir or lopinavir/ ritonavir, and darunavir/ ritonavir/ raltegravir), group 3 (n = 13) HIV ART-naïve patients, and group 4 (n = 8) healthy individuals (controls). Nuclear abnormalities in buccal mucosal samples (micronuclei, binucleated cells, nuclear buds, karyorrhexis, karyolysis, and pyknosis) were quantified. Simultaneously, blood samples were taken to quantify CD4+, CD8+, and HIV viral load. There was a significant age difference between HIV ART-naïve patients and receiving ART groups. Infection time was longer in HIV patients with ART than in ART-naïve patients. There were no differences in sex, smoking, alcohol consumption, or number of micronucleated cells between the study groups. We found higher frequencies of binucleated cells and nuclear buds in HIV patients, HIV ART-naïve, and HIV ART patients compared to the control group. We found a positive correlation between nuclear buds and CD4/CD8 ratio in the HIV ART-naïve group. In conclusion, PLWH showed increased genomic instability. The CD4/CD8 ratio affects the numbers of nuclear buds and binucleated cells. These findings are pertinent to mechanisms of damage and possible strategies to mitigate carcinogenesis in PLWH.
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Affiliation(s)
- Juan Ernesto Gutiérrez-Sevilla
- Laboratorio de Inmunodeficiencias y Retrovirus Humanos, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Laboratorio de Mutagénesis, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Maestría en Microbiología Médica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Jhonathan Cárdenas-Bedoya
- Laboratorio de Inmunodeficiencias y Retrovirus Humanos, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Martha Escoto-Delgadillo
- Laboratorio de Inmunodeficiencias y Retrovirus Humanos, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Guadalajara, Mexico
| | - Guillermo Moisés Zúñiga-González
- Laboratorio de Mutagénesis, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - Alma Minerva Pérez-Ríos
- Servicio de Infectología, Hospital General Regional 110, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - Belinda Claudia Gómez-Meda
- Instituto de Genética Humana "Dr. Enrique Corona Rivera", Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Gracia Viviana González-Enríquez
- Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Izchel Figarola-Centurión
- Laboratorio de Inmunodeficiencias y Retrovirus Humanos, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Efraín Chavarría-Avila
- Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - Blanca Miriam Torres-Mendoza
- Laboratorio de Inmunodeficiencias y Retrovirus Humanos, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico.
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Zhu L, Duan W, Wu G, Zhang D, Wang L, Chen D, Chen Z, Yang B. Protective effect of hydrogen sulfide on endothelial cells through Sirt1-FoxO1-mediated autophagy. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1586. [PMID: 33437785 PMCID: PMC7791216 DOI: 10.21037/atm-20-3647] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background As a new member of the vasculoprotective gasotransmitter family, hydrogen sulfide (H2S) functions similar to nitric oxide (NO) and carbon monoxide (CO). Endothelial cell (EC) death and autophagy enable cells to cope with the progression of cardiovascular diseases. However, the impacts and underlying mechanisms of H2S in the autophagic process in ECs are not completely understood. Here, we investigated the effects of H2S on autophagy in human vascular ECs. Methods Human umbilical vein endothelial cells (HUVECs) were exposed to different concentrations (0, 50, 100, 200, 500 and 1,000 µmol/L) GYY4137 (H2S donor) for indicated times (0, 0.5, 1, 2, 4 and 8 h), with or without pre-treatment with the autophagy inhibitor 3-methyladenine (3-MA) or bafilomycin A1. HUVECs were transfected with sirtuin 1 (Sirt1) overexpression plasmids (PIRES-Sirt1), Sirt1-siRNAs or forkhead box O1 (FoxO1)-siRNA using Lipofectamine 2000. Cell autophagy was evaluated via Western blotting and fluorescence microscopy. Co-immunoprecipitation assay was used to measure acetylation level of FoxO1. The distribution of FoxO1 in the cytoplasm and nucleus was observed using Western blotting and immunofluorescence. Western blotting, flow cytometric analysis, and cell count kit-8 assay were conducted to evaluate the effect of H2S on the oxidized low-density lipoprotein (Ox-LDL) induced apoptosis of HUVECs. Results Using both gain- and loss-of-function experiments, we showed that Sirt1-dependent activation of FoxO1, including its nuclear translocation and deacetylation, was critical for mediating H2S-induced autophagy in ECs. Furthermore, H2S-induced autophagy protected ECs from Ox-LDL-induced apoptosis by activating Sirt1. Conclusions These results suggest that Sirt1-mediated autophagy in ECs is a novel mechanism by which H2S exerts vascular-protective actions.
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Affiliation(s)
- Lin Zhu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wu Duan
- Division of Endocrinology, Department of Internal Medicine, Qilu Hospital of Shandong University, Jinan, China
| | - Guangjie Wu
- Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Di Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lan Wang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong Chen
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhishui Chen
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Yang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Daussy CF, Galais M, Pradel B, Robert-Hebmann V, Sagnier S, Pattingre S, Biard-Piechaczyk M, Espert L. HIV-1 Env induces pexophagy and an oxidative stress leading to uninfected CD4 + T cell death. Autophagy 2020; 17:2465-2474. [PMID: 33073673 DOI: 10.1080/15548627.2020.1831814] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The immunodeficiency observed in HIV-1-infected patients is mainly due to uninfected bystander CD4+ T lymphocyte cell death. The viral envelope glycoproteins (Env), expressed at the surface of infected cells, play a key role in this process. Env triggers macroautophagy/autophagy, a process necessary for subsequent apoptosis, and the production of reactive oxygen species (ROS) in bystander CD4+ T cells. Here, we demonstrate that Env-induced oxidative stress is responsible for their death by apoptosis. Moreover, we report that peroxisomes, organelles involved in the control of oxidative stress, are targeted by Env-mediated autophagy. Indeed, we observe a selective autophagy-dependent decrease in the expression of peroxisomal proteins, CAT and PEX14, upon Env exposure; the downregulation of either BECN1 or SQSTM1/p62 restores their expression levels. Fluorescence studies allowed us to conclude that Env-mediated autophagy degrades these entire organelles and specifically the mature ones. Together, our results on Env-induced pexophagy provide new clues on HIV-1-induced immunodeficiency.Abbreviations: Ab: antibodies; AF: auranofin; AP: anti-proteases; ART: antiretroviral therapy; BafA1: bafilomycin A1; BECN1: beclin 1; CAT: catalase; CD4: CD4 molecule; CXCR4: C-X-C motif chemokine receptor 4; DHR123: dihydrorhodamine 123; Env: HIV-1 envelope glycoproteins; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; GFP: green fluorescent protein; GFP-SKL: GFP-serine-lysine-leucine; HEK: human embryonic kidney; HIV-1: type 1 human immunodeficiency virus; HTRF: homogeneous time resolved fluorescence; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; NAC: N-acetyl-cysteine; PARP: poly(ADP-ribose) polymerase; PEX: peroxin; ROS: reactive oxygen species; siRNA: small interfering ribonucleic acid; SQSTM1/p62: sequestosome 1.
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Affiliation(s)
| | | | | | | | | | | | | | - Lucile Espert
- IRIM, University of Montpellier, Montpellier, France
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16
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Lugongolo MY, Manoto SL, Ombinda-Lemboumba S, Maaza M, Mthunzi-Kufa P. The combination of low level laser therapy and efavirenz drastically reduces HIV infection in TZM-bl cells. Biomed J 2020; 44:S37-S47. [PMID: 35735083 PMCID: PMC9039092 DOI: 10.1016/j.bj.2020.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 05/06/2020] [Accepted: 05/26/2020] [Indexed: 11/24/2022] Open
Abstract
Background Human immunodeficiency virus (HIV) infection remains a global health challenge despite the use of antiretroviral therapy, which has led to a significant decline in the mortality rates. Owing to the unavailability of an effective treatment to completely eradicate the virus, researchers continue to explore new methods. Low level laser therapy (LLLT) has been widely used to treat different medical conditions and involves the exposure of cells or tissues to low levels of red and near infrared light. The study aimed to determine the effect of combining two unrelated therapies on HIV infection in TZM-bl cells. Methods In the current study, LLLT was combined with efavirenz, an HIV reverse transcriptase inhibitor to establish their impact on HIV infection in TZM-bl cells. Both the HIV infected and uninfected cells were laser irradiated using a wavelength of 640 nm with fluencies of 2–10 J/cm2. Results The impact of HIV, efavirenz and irradiation were determined 24 h post irradiation using biological assays. Luciferase assay results showed that the combination of LLLT and efavirenz significantly reduced HIV infection in cells, despite the undesirable effects observed in the cells as demonstrated by cell morphology, proliferation and cell integrity assay. Flow cytometry results demonstrated that cell death was mainly through necrosis while fluorescence microscopy showed the production of reactive oxygen species in HIV infected cells. Conclusion Efavirenz and LLLT significantly reduced HIV infection in TZM-bl cells. Furthermore, the death of HIV infected cells was due to necrosis.
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17
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Barillari G. The Anti-Angiogenic Effects of Anti-Human Immunodeficiency Virus Drugs. Front Oncol 2020; 10:806. [PMID: 32528888 PMCID: PMC7253758 DOI: 10.3389/fonc.2020.00806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 04/23/2020] [Indexed: 12/17/2022] Open
Abstract
The growth and metastasis of malignant tumors benefit from the formation of blood vessels within the tumor area. There, new vessels originate from angiogenesis (the sprouting of pre-existing neighboring vessels) and/or vasculogenesis (the mobilization of bone marrow-derived endothelial cell precursors which incorporate in tumor vasculature and then differentiate into mature endothelial cells). These events are induced by soluble molecules (the angiogenic factors) and modulated by endothelial cell interactions with the perivascular matrix. Given angiogenesis/vasculogenesis relevance to tumor progression, anti-angiogenic drugs are often employed to buttress surgery, chemotherapy or radiation therapy in the treatment of a wide variety of cancers. Most of the anti-angiogenic drugs have been developed to functionally impair the angiogenic vascular endothelial growth factor: however, this leaves other angiogenic factors unaffected, hence leading to drug resistance and escape. Other anti-angiogenic strategies have exploited classical inhibitors of enzymes remodeling the perivascular matrix. Disappointingly, these inhibitors have been found toxic and/or ineffective in clinical trials, even though they block angiogenesis in pre-clinical models. These findings are stimulating the identification of other anti-angiogenic compounds. In this regard, it is noteworthy that drugs utilized for a long time to counteract human immune deficiency virus (HIV) can directly and effectively hamper molecular pathways leading to blood vessel formation. In this review the mechanisms leading to angiogenesis and vasculogenesis, and their susceptibility to anti-HIV drugs will be discussed.
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Affiliation(s)
- Giovanni Barillari
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
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18
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Srikanth K, Park JE, Ji SY, Kim KH, Lee YK, Kumar H, Kim M, Baek YC, Kim H, Jang GW, Choi BH, Lee SD. Genome-Wide Transcriptome and Metabolome Analyses Provide Novel Insights and Suggest a Sex-Specific Response to Heat Stress in Pigs. Genes (Basel) 2020; 11:genes11050540. [PMID: 32403423 PMCID: PMC7291089 DOI: 10.3390/genes11050540] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 12/16/2022] Open
Abstract
Heat stress (HS) negatively impacts pig production and swine health. Therefore, to understand the genetic and metabolic responses of pigs to HS, we used RNA-Seq and high resolution magic angle spinning (HR-MAS) NMR analyses to compare the transcriptomes and metabolomes of Duroc pigs (n = 6, 3 barrows and 3 gilts) exposed to heat stress (33 °C and 60% RH) with a control group (25 °C and 60% RH). HS resulted in the differential expression of 552 (236 up, 316 down) and 879 (540 up, 339 down) genes and significant enrichment of 30 and 31 plasma metabolites in female and male pigs, respectively. Apoptosis, response to heat, Toll-like receptor signaling and oxidative stress were enriched among the up-regulated genes, while negative regulation of the immune response, ATP synthesis and the ribosomal pathway were enriched among down-regulated genes. Twelve and ten metabolic pathways were found to be enriched (among them, four metabolic pathways, including arginine and proline metabolism, and three metabolic pathways, including pantothenate and CoA biosynthesis), overlapping between the transcriptome and metabolome analyses in the female and male group respectively. The limited overlap between pathways enriched with differentially expressed genes and enriched plasma metabolites between the sexes suggests a sex-specific response to HS in pigs.
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Affiliation(s)
- Krishnamoorthy Srikanth
- Amimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea; (K.S.); (J.-E.P.); (H.K.); (H.K.); (G.-W.J.); (B.-H.C.)
| | - Jong-Eun Park
- Amimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea; (K.S.); (J.-E.P.); (H.K.); (H.K.); (G.-W.J.); (B.-H.C.)
| | - Sang Yun Ji
- Animal Nutrition and Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea; (S.Y.J.); (K.H.K.); (Y.K.L.); (M.K.); (Y.C.B.)
| | - Ki Hyun Kim
- Animal Nutrition and Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea; (S.Y.J.); (K.H.K.); (Y.K.L.); (M.K.); (Y.C.B.)
| | - Yoo Kyung Lee
- Animal Nutrition and Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea; (S.Y.J.); (K.H.K.); (Y.K.L.); (M.K.); (Y.C.B.)
| | - Himansu Kumar
- Amimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea; (K.S.); (J.-E.P.); (H.K.); (H.K.); (G.-W.J.); (B.-H.C.)
| | - Minji Kim
- Animal Nutrition and Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea; (S.Y.J.); (K.H.K.); (Y.K.L.); (M.K.); (Y.C.B.)
| | - Youl Chang Baek
- Animal Nutrition and Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea; (S.Y.J.); (K.H.K.); (Y.K.L.); (M.K.); (Y.C.B.)
| | - Hana Kim
- Amimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea; (K.S.); (J.-E.P.); (H.K.); (H.K.); (G.-W.J.); (B.-H.C.)
| | - Gul-Won Jang
- Amimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea; (K.S.); (J.-E.P.); (H.K.); (H.K.); (G.-W.J.); (B.-H.C.)
| | - Bong-Hwan Choi
- Amimal Genomics and Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea; (K.S.); (J.-E.P.); (H.K.); (H.K.); (G.-W.J.); (B.-H.C.)
| | - Sung Dae Lee
- Animal Nutrition and Physiology Team, National Institute of Animal Science, RDA, Wanju 55365, Korea; (S.Y.J.); (K.H.K.); (Y.K.L.); (M.K.); (Y.C.B.)
- Correspondence: ; Tel.: +82-63-238-7454; Fax: +82-63-238-7497
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Ganta KK, Chaubey B. Mitochondrial dysfunctions in HIV infection and antiviral drug treatment. Expert Opin Drug Metab Toxicol 2019; 15:1043-1052. [PMID: 31715109 DOI: 10.1080/17425255.2019.1692814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Introduction: With the introduction of highly active anti-retroviral therapy (HAART), treatment of HIV infection has improved radically, shifting the concept of HIV disease from a highly mortal epidemic to a chronic illness which needs systematic management. However, HAART does not target the integrated proviral DNA. Hence, prolonged use of antiviral drugs is needed for sustaining life. As a consequence, severe side effects emerge. Several parameters involve in causing these adverse effects. Mitochondrial dysfunctions were pointed as common factor among them. It is, therefore, necessary to critically examine mitochondrial dysfunction in order to understand the side effects.Areas covered: There are many events involved in causing drug-induced side-effects; in this review, we only highlight mitochondrial dysfunctions as one of the events. We present up-to-date findings on mitochondrial dysfunction caused by HIV infection and antiviral drug treatment. Both in vivo and in vitro studies on mitochondrial dysfunction like change in morphology, membrane depolarization, mitophagy, mitochondrial DNA depletion, and intrinsic apoptosis have been discussed.Expert opinion: Mitochondrial dysfunction is associated with severe complications that often lead to discontinuation or change in treatment regimen. Prior knowledge of side effects of antiviral drugs would help in better management and future research should focus to avoid mitochondrial targeting of antiviral drugs while maintaining their antiviral properties.
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Affiliation(s)
- Krishna Kumar Ganta
- Functional Genomics Lab, Centre for Advanced Study, Department of Botany, University of Calcutta, Kolkata, India
| | - Binay Chaubey
- Functional Genomics Lab, Centre for Advanced Study, Department of Botany, University of Calcutta, Kolkata, India
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20
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Martinez-Arroyo O, Gruevska A, Victor VM, González-Polo RA, Yakhine-Diop SM, Fuentes JM, Esplugues JV, Blas-Garcia A, Apostolova N. Mitophagy in human astrocytes treated with the antiretroviral drug Efavirenz: Lack of evidence or evidence of the lack. Antiviral Res 2019; 168:36-50. [DOI: 10.1016/j.antiviral.2019.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/11/2019] [Accepted: 04/30/2019] [Indexed: 01/19/2023]
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21
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Yew WW, Chan DP, Singhal A, Zhang Y, Lee SS. Does oxidative stress contribute to adverse outcomes in HIV-associated TB? J Antimicrob Chemother 2019; 73:1117-1120. [PMID: 29325139 DOI: 10.1093/jac/dkx509] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In HIV infection, oxidative stress is a pronounced phenomenon, with likely links to HIV-related pathologies and the progression of HIV infection per se. TB is an AIDS-defining condition. HIV-associated oxidative stress, like that associated with diabetes mellitus, might adversely impact the outcomes of TB, probably through increased propensity for generation of metabolically dormant mycobacterial persisters, alongside other mechanisms. This hypothesis might help in guiding the exploration of relevant research directions to improve the care of patients.
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Affiliation(s)
- Wing-Wai Yew
- Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong
| | - Denise P Chan
- Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong
| | - Amit Singhal
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Ying Zhang
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Shui-Shan Lee
- Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong
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22
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Bertrand L, Méroth F, Tournebize M, Leda AR, Sun E, Toborek M. Targeting the HIV-infected brain to improve ischemic stroke outcome. Nat Commun 2019; 10:2009. [PMID: 31043599 PMCID: PMC6494822 DOI: 10.1038/s41467-019-10046-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 04/12/2019] [Indexed: 12/13/2022] Open
Abstract
HIV-associated cerebrovascular events remain highly prevalent even in the current era of antiretroviral therapy (ART). We hypothesize that low-level HIV replication and associated inflammation endure despite antiretroviral treatment and affect ischemic stroke severity and outcomes. Using the EcoHIV infection model and the middle cerebral artery occlusion as the ischemic stroke model in mice, we present in vivo analysis of the relationship between HIV and stroke outcome. EcoHIV infection increases infarct size and negatively impacts tissue and functional recovery. Ischemic stroke also results in an increase in EcoHIV presence in the affected regions, suggesting post-stroke reactivation that magnifies pro-inflammatory status. Importantly, ART with a high CNS penetration effectiveness (CPE) is more beneficial than low CPE treatment in limiting tissue injury and accelerating post-stroke recovery. These results provide potential insight for treatment of HIV-infected patients that are at risk of developing cerebrovascular disease, such as ischemic stroke.
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Affiliation(s)
- Luc Bertrand
- University of Miami Miller School of Medicine, Department of Biochemistry and Molecular Biology, Miami, FL, 33136, USA.
| | - Fannie Méroth
- University of Miami Miller School of Medicine, Department of Biochemistry and Molecular Biology, Miami, FL, 33136, USA
| | - Marie Tournebize
- University of Miami Miller School of Medicine, Department of Biochemistry and Molecular Biology, Miami, FL, 33136, USA
| | - Ana Rachel Leda
- University of Miami Miller School of Medicine, Department of Biochemistry and Molecular Biology, Miami, FL, 33136, USA
| | - Enze Sun
- University of Miami Miller School of Medicine, Department of Biochemistry and Molecular Biology, Miami, FL, 33136, USA
| | - Michal Toborek
- University of Miami Miller School of Medicine, Department of Biochemistry and Molecular Biology, Miami, FL, 33136, USA.
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23
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Marincowitz C, Genis A, Goswami N, De Boever P, Nawrot TS, Strijdom H. Vascular endothelial dysfunction in the wake of HIV and ART. FEBS J 2018; 286:1256-1270. [PMID: 30220106 DOI: 10.1111/febs.14657] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/30/2018] [Accepted: 09/12/2018] [Indexed: 01/18/2023]
Abstract
Mounting evidence points to increased rates of cardiovascular disease (CVD) among people living with HIV/AIDS (PLWHA). Endothelial dysfunction (loss of endothelium-dependent vascular relaxation in response to provasodilatory stimuli) constitutes an early pathophysiological event in atherogenesis and CVD. Both HIV-1 infection and antiretroviral therapy (ART) are implicated in the development of endothelial dysfunction; however, conclusions are frequently drawn from associations shown in epidemiological studies. In this narrative review of mainly in vitro and animal studies, we report on the current understanding of how various HIV-1 proteins, HIV-1-induced proinflammatory cytokines and common antiretroviral drugs directly impact vascular endothelial cells. Proposed cellular mechanisms underlying the switch to a dysfunctional state are discussed, including oxidative stress, impaired expression and regulation of endothelial nitric oxide (NO) synthase (eNOS) and increased expression of vascular adhesion molecules. From the literature, it appears that increased reactive oxygen species (ROS) production, linked to decreased NO bioavailability and ensuing endothelial dysfunction, may be proposed as a putative final common pathway afflicting the vascular endothelium in PLWHA. The HIV-1-proteins Tat, Gp120 and Nef in particular, the proinflammatory cytokine, TNF-α, and the antiretroviral drugs Efavirenz and Lopinavir, most commonly postulated to be primary causal agents of endothelial dysfunction, are also discussed. We conclude that, despite existing evidence from basic research papers, a significant gap remains in terms of the exact underlying cellular mechanisms involved in HIV-1 and ART induced endothelial dysfunction. Bridging this gap could help pave the way for future strategies to prevent and treat early cardiovascular changes in PLWHA.
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Affiliation(s)
- Clara Marincowitz
- Division of Medical Physiology, Stellenbosch University, Cape Town, South Africa
| | - Amanda Genis
- Division of Medical Physiology, Stellenbosch University, Cape Town, South Africa
| | - Nandu Goswami
- Department of Physiology and Otto Loewi Research Centre, Medical University of Graz, Austria
| | - Patrick De Boever
- Health Unit, Flemish Institute for Technological Research (VITO), Mol, Belgium.,Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.,Centre for Environment and Health, Department for Public Health and Primary Care, KU Leuven, Belgium
| | - Hans Strijdom
- Division of Medical Physiology, Stellenbosch University, Cape Town, South Africa
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24
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Musisi E, Matovu DK, Bukenya A, Kaswabuli S, Zawedde J, Andama A, Byanyima P, Sanyu I, Sessolo A, Seremba E, Davis JL, Worodria W, Huang L, Walter ND, Mayanja-Kizza H. Effect of anti-retroviral therapy on oxidative stress in hospitalized HIV-infected adults with and without TB. Afr Health Sci 2018; 18:512-522. [PMID: 30602982 PMCID: PMC6306996 DOI: 10.4314/ahs.v18i3.7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background HIV infection and opportunistic infections cause oxidative stress (OS), which is associated with tissue damage. Anti-retroviral therapy (ART) is used to treat HIV and decrease the risk of opportunistic infections, but it is unclear whether ART reduces OS. Association of ART with OS was investigated. Methods We stratified a convenience sample of frozen serum or plasma from HIV-infected, ART-naïve (n=21); HIV-infected, ART-treated (n=14); HIV and PTB co-infected, ART-naïve (n=21); HIV and PTB co-infected, ART-treated (n=25) patients. Controls (n=21) were HIV-negative adults without TB symptoms. Concentration of OS markers namely: transaminases (ALT and AST), gamma glutamyl transpeptidase (GGT), albumin, total protein, malondialdehyde (MDA), vitamin C, and total anti-oxidant status (TAS) were determined. Results AST (p<0.001), GGT (p<0.001), total protein (p=0.001) and MDA (p<0.001) were higher in HIV patients compared to controls. Vitamin C (P<0.0001) and albumin (p<0.01) were lower in HIV-patients relative to controls. ART was only associated with higher albumin (p=0.001), higher GGT (p=0.02) and lower vitamin C (p=0.009). HIV and PTB co-infection was only significantly associated with higher GGT (p=0.01) and AST (p=0.03). Conclusion We identified severe OS among HIV-patients. ART was associated with both increased and reduced markers of OS hence suggesting that ART may not attenuate OS.
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Affiliation(s)
- Emmanuel Musisi
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
- College of Natural Science Department of Biochemistry and Sports Sciences, Makerere University, P. O. Box 7072, Kampala, Uganda
| | - Denis Kasozi Matovu
- College of Natural Science Department of Biochemistry and Sports Sciences, Makerere University, P. O. Box 7072, Kampala, Uganda
| | - Andrew Bukenya
- College of Health Sciences, Department of Medical Biochemistry, Makerere University, PO Box 7072, Kampala, Uganda
| | - Sylvia Kaswabuli
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Josephine Zawedde
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Alfred Andama
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Patrick Byanyima
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Ingvar Sanyu
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Abdul Sessolo
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Emmanuel Seremba
- College of Health Sciences, Department of Medicine, Makerere University PO Box 7072, Kampala, Uganda
| | | | - William Worodria
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
| | - Laurence Huang
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
- HIV, Infectious Diseases, and Global Medicine Division, University of California, San Francisco, San Francisco, CA, USA
- Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Nicholas D Walter
- Infectious Diseases Research Collaboration, Plot 2C Nakasero Hill Road PO Box 7475, Kampala Uganda
- Pulmonary Section, Denver Veterans Affairs Medical Center, Denver, USA
| | - Harriet Mayanja-Kizza
- College of Health Sciences, Department of Medicine, Makerere University PO Box 7072, Kampala, Uganda
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25
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Möller M, Fourie J, Harvey BH. Efavirenz exposure, alone and in combination with known drugs of abuse, engenders addictive-like bio-behavioural changes in rats. Sci Rep 2018; 8:12837. [PMID: 30150782 PMCID: PMC6110861 DOI: 10.1038/s41598-018-29978-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 07/20/2018] [Indexed: 01/09/2023] Open
Abstract
Efavirenz is abused in a cannabis-containing mixture known as Nyaope. The addictive-like effects of efavirenz (5, 10 and 20 mg/kg) was explored using conditioned place preference (CPP) in rats following sub-acute exposure vs. methamphetamine (MA; 1 mg/kg) and Δ9-tetrahydrocannabinol (THC; 0.75 mg/kg). The most addictive dose of efavirenz was then compared to THC alone and THC plus efavirenz following sub-chronic exposure using multiple behavioural measures, viz. CPP, sucrose preference test (SPT) and locomotor activity. Peripheral superoxide dismutase (SOD), regional brain lipid peroxidation and monoamines were also determined. Sub-acute efavirenz (5 mg/kg) had a significant rewarding effect in the CPP comparable to MA and THC. Sub-chronic efavirenz (5 mg/kg) and THC + efavirenz were equally rewarding using CPP, with increased cortico-striatal dopamine (DA), and increased lipid peroxidation and SOD. Sub-chronic THC did not produce CPP but significantly increased SOD and decreased hippocampal DA. Sub-chronic THC + efavirenz was hedonic in the SPT and superior to THC alone regarding cortico-striatal lipid peroxidation and sucrose preference. THC + efavirenz increased cortico-striatal DA and decreased serotonin (5-HT). Concluding, efavirenz has dose-dependent rewarding effects, increases oxidative stress and alters regional brain monoamines. Efavirenz is hedonic when combined with THC, highlighting its abuse potential when combined with THC.
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Affiliation(s)
- Marisa Möller
- Center of Excellence for Pharmaceutical Sciences, School of Pharmacy, North West University, Potchefstroom, South Africa.
| | - Jaco Fourie
- Center of Excellence for Pharmaceutical Sciences, School of Pharmacy, North West University, Potchefstroom, South Africa
| | - Brian H Harvey
- Center of Excellence for Pharmaceutical Sciences, School of Pharmacy, North West University, Potchefstroom, South Africa
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26
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Faltz M, Bergin H, Pilavachi E, Grimwade G, Mabley JG. Effect of the Anti-retroviral Drugs Efavirenz, Tenofovir and Emtricitabine on Endothelial Cell Function: Role of PARP. Cardiovasc Toxicol 2018; 17:393-404. [PMID: 28050758 DOI: 10.1007/s12012-016-9397-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Highly active anti-retroviral therapy has proved successful in reducing morbidity and mortality associated with HIV infection though it has been linked to increased risk of cardiovascular disease. To date, the direct effects of the anti-retroviral drugs Efavirenz, Tenofovir and Emtricitabine on the vasculature relaxant response have not been elucidated, which impaired may predispose individuals to cardiovascular disease. Increased cellular oxidative stress and overactivation of the DNA repair enzyme poly (ADP-ribose) polymerase (PARP) have been identified as central mediators of vascular dysfunction. The aim of this study was to investigate whether exposure to Efavirenz, Tenofovir or Emtricitabine directly causes endothelial cell dysfunction via overactivation of PARP. Exposure of ex vivo male rat aortic rings or in vitro endothelial cells to Efavirenz but not Tenofovir or Emtricitabine impaired the acetylcholine-mediated relaxant response, increased cellular oxidative stress and PARP activity, decreased cell viability and increased apoptosis and necrosis. Pharmacological inhibition of PARP protected against the Efavirenz-mediated impairment of vascular relaxation and endothelial cell dysfunction. Oestrogen exposure also protected against the Efavirenz-mediated inhibition of the vascular relaxant response, cell dysfunction and increased PARP activation. In conclusion, Efavirenz directly impairs endothelial cell function, which may account for the increased risk of developing cardiovascular complications with anti-retroviral therapy.
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Affiliation(s)
- Mary Faltz
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton, BN2 4GJ, UK
| | - Hild Bergin
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton, BN2 4GJ, UK
| | - Elly Pilavachi
- Brighton and Sussex Medical School, University of Sussex, Brighton, BN1 9PX, UK
| | - Guy Grimwade
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton, BN2 4GJ, UK
| | - Jon G Mabley
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton, BN2 4GJ, UK.
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27
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Alegre F, Moragrega ÁB, Polo M, Marti‐Rodrigo A, Esplugues JV, Blas‐Garcia A, Apostolova N. Role of p62/SQSTM1 beyond autophagy: a lesson learned from drug-induced toxicity in vitro. Br J Pharmacol 2018; 175:440-455. [PMID: 29148034 PMCID: PMC5773949 DOI: 10.1111/bph.14093] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 10/02/2017] [Accepted: 11/07/2017] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND AND PURPOSE SQSTM1/p62 is a multifunctional, stress-induced, scaffold protein involved in multiple cellular processes including autophagic clearance, regulation of inflammatory responses and redox homeostasis. Its altered function has been associated with different human pathologies, such as neurodegenerative, metabolic and bone diseases (down-regulation), and cancerogenesis (up-regulation). However, its role in the off-target effects of clinically used drugs is still not understood. EXPERIMENTAL APPROACH We evaluated the expression of p62 in cultured Hep3B cells and their derived ρ° cells (lacking mitochondria), along with markers of autophagy and mitochondrial dysfunction. The effects of efavirenz were compared with those of known pharmacological stressors, rotenone, thapsigargin and CCCP, and we also used transient silencing with siRNA and p62 overexpression. Western blotting, quantRT-PCR and fluorescence microscopy were used to assay these effects and their underlying mechanisms. KEY RESULTS In Hep3B cells, efavirenz augmented p62 protein content, an effect not observed in the corresponding ρ° cells. p62 up-regulation followed enhanced SQSTM1 expression mediated through the transcription factor CHOP/DDIT3, while other well-known regulators (NF-kB and Nrf2) were not involved. Inhibition of autophagy with 3MA or with transient silencing of Atg5 did not affect SQSTM1 expression in efavirenz-treated cells while p62 overexpression ameliorated the deleterious effect of efavirenz on cell viability. CONCLUSION AND IMPLICATIONS In our model, p62 exerted a specific, autophagy-independent role and protected against efavirenz-induced mitochondrial ROS generation and activation of the NLRP3 inflammasome. These findings add to the multifunctional nature of p62 and may help to understand the off-target effects of clinically useful drugs.
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Affiliation(s)
- Fernando Alegre
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
- FISABIO–Hospital Universitario Dr. PesetValenciaSpain
| | - Ángela B Moragrega
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
| | - Miriam Polo
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
- FISABIO–Hospital Universitario Dr. PesetValenciaSpain
| | - Alberto Marti‐Rodrigo
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
| | - Juan V Esplugues
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
- FISABIO–Hospital Universitario Dr. PesetValenciaSpain
- CIBERehdValenciaSpain
| | - Ana Blas‐Garcia
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
- CIBERehdValenciaSpain
| | - Nadezda Apostolova
- Departamento de Farmacología, Facultad de MedicinaUniversidad de ValenciaValenciaSpain
- CIBERehdValenciaSpain
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28
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Adana MY, Akang EN, Peter AI, Jegede AI, Naidu ECS, Tiloke C, Chuturgoon AA, Azu OO. Naringenin attenuates highly active antiretroviral therapy-induced sperm DNA fragmentations and testicular toxicity in Sprague-Dawley rats. Andrology 2017; 6:166-175. [DOI: 10.1111/andr.12439] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/25/2017] [Accepted: 10/11/2017] [Indexed: 12/17/2022]
Affiliation(s)
- M. Y. Adana
- Discipline of Clinical Anatomy; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
- Department of Anatomy; Faculty of Basic Medical Sciences; College of Health Sciences; University of Ilorin; Ilorin Nigeria
| | - E. N. Akang
- Discipline of Clinical Anatomy; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
- Department of Anatomy; College of Medicine; University of Lagos; Lagos Nigeria
| | - A. I. Peter
- Discipline of Clinical Anatomy; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
- Department of Anatomy; Faculty of Basic Medical Sciences; University of Uyo; Uyo Nigeria
| | - A. I. Jegede
- Discipline of Clinical Anatomy; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
| | - E. C. S. Naidu
- Discipline of Clinical Anatomy; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
| | - C. Tiloke
- Discipline of Biochemistry; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
| | - A. A. Chuturgoon
- Discipline of Biochemistry; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
| | - O. O. Azu
- Discipline of Clinical Anatomy; School of Laboratory Medicine and Medical Sciences; University of KwaZulu-Natal; Durban South Africa
- Department of Anatomy; School of Medicine; Windhoek Namibia
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29
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Stern AL, Lee RN, Panvelker N, Li J, Harowitz J, Jordan-Sciutto KL, Akay-Espinoza C. Differential Effects of Antiretroviral Drugs on Neurons In Vitro: Roles for Oxidative Stress and Integrated Stress Response. J Neuroimmune Pharmacol 2017; 13:64-76. [PMID: 28861811 DOI: 10.1007/s11481-017-9761-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 08/18/2017] [Indexed: 12/15/2022]
Abstract
Mounting evidence suggests that antiretroviral drugs may contribute to the persistence of HIV-associated neurocognitive disorders (HAND), which impact 30%-50% of HIV-infected patients in the post-antiretroviral era. We previously reported that two first generation HIV protease inhibitors, ritonavir and saquinavir, induced oxidative stress, with subsequent neuronal death in vitro, which was reversed by augmentation of the endogenous antioxidant response by monomethyl fumarate. We herein determined whether two newer-generation PIs, darunavir and lopinavir, were deleterious to neurons in vitro. Further, we expanded our assessment to include three integrase strand transfer inhibitors, raltegravir, dolutegravir, and elvitegravir. We found that only lopinavir and elvitegravir were neurotoxic to primary rat neuroglial cultures as determined by the loss of microtubule-associated protein 2 (MAP2). Intriguingly, lopinavir but not elvitegravir led to oxidative stress and induced the endogenous antioxidant response (EAR). Furthermore, neurotoxicity of lopinavir was blocked by pharmacological augmentation of the endogenous antioxidant heme oxygenase-1 (HO-1), expanding our previous finding that protease inhibitor-induced neurotoxicity was mediated by oxidative stress. Conversely, elvitegravir but not lopinavir led to increased eIF2α phosphorylation, indicating the activation of a common adaptive pathway termed the integrated stress response (ISR), and elvitegravir-mediated neurotoxicity was partially alleviated by the ISR inhibitor trans-ISRIB, suggesting ISR as a promoter of elvitegravir-associated neurotoxicity. Overall, we found that neurotoxicity was induced only by a subset of protease inhibitors and integrase strand transfer inhibitors, providing evidence for class- and drug-specific neurotoxic effects of antiretroviral drugs. Future in vivo studies will be critical to confirm the neurotoxicity profiles of these drugs for incorporation of these findings into patient management. The EAR and ISR pathways are potential access points for the development of adjunctive therapies to complement antiretroviral therapies and limit their contribution to HAND persistence.
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Affiliation(s)
- Anna L Stern
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA
| | - Rebecca N Lee
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA
| | - Nina Panvelker
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA
| | - Jiean Li
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA
| | - Jenna Harowitz
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA
| | - Kelly L Jordan-Sciutto
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA
| | - Cagla Akay-Espinoza
- Department of Pathology, School of Dental Medicine, University of Pennsylvania, 240 S. 40th St. Rm. 312 Levy Building, Philadelphia, PA, 19104-6030, USA.
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30
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Awodele O, Ibrahim A, Orhii P. Patterns of adverse drug reaction signals in NAFDAC Pharmacovigilance activities from September to November, 2014. INTERNATIONAL JOURNAL OF RISK & SAFETY IN MEDICINE 2017; 28:13-23. [PMID: 27176753 DOI: 10.3233/jrs-160669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Adverse drug reaction signals are reported information on possible causal relationships between an adverse event and a drug. The National Pharmacovigilance Centre (NPC) in Nigeria has over 3,000 reported adverse drug reaction cases which have been adequately entered into the ADR data bank. OBJECTIVE Data mining of ADR reports from September to November, 2014 were carried out in this present study with the intention to describe the pattern of ADRs and generate possible signals. METHODS A total of about 100 reported cases with arrays of adverse drug reactions were reported between September and November, 2014 and the data were analyzed using SPSS version 17. RESULTS Efavirenz/Tenofovir/Lamivudine combination was the highest reported drugs (24.2%) while efavirenz alone was reported in 8 times (8.8%) and HIV (63.3%) was the highest reported indication of drug use. Efavirenz caused central nervous system adverse reactions as revealed in the ADRs analyses. Zidovudine/Lamivudine/Nevirapine combination in concomitant use with Cotrimoxazole were reported 8 times with generalized maculopapular rashes on the trunk with some area of hyper pigmentation with intense itching documented twice and big/swollen rashes all over the faces. Zidovudine was also reported four times to cause severe anaemia. CONCLUSION More surveillance is advocated so as to ascertain the consistency of the observed ADRs and thereafter establish appropriate signals.
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Affiliation(s)
- Olufunsho Awodele
- Department of Pharmacology, Therapeutics & Toxicology, College of Medicine, University of Lagos, Lagos, Nigeria.,National Agency for Food and Drug Administration and Control (NAFDAC), Abuja, Nigeria
| | - Ali Ibrahim
- National Agency for Food and Drug Administration and Control (NAFDAC), Abuja, Nigeria
| | - Paul Orhii
- National Agency for Food and Drug Administration and Control (NAFDAC), Abuja, Nigeria
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31
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Apostolova N, Blas-Garcia A, Galindo MJ, Esplugues JV. Efavirenz: What is known about the cellular mechanisms responsible for its adverse effects. Eur J Pharmacol 2017; 812:163-173. [PMID: 28690189 DOI: 10.1016/j.ejphar.2017.07.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 02/08/2023]
Abstract
The HIV infection remains an important health problem worldwide. However, due to the efficacy of combined antiretroviral therapy (cART), it has ceased to be a mortal condition, becoming a chronic disease instead. Efavirenz, the most prescribed non-nucleoside analogue reverse transcriptase inhibitor (NNRTI), has been a key component of cART since its commercialization in 1998. Though still a drug of choice in many countries, its primacy has been challenged by the arrival of newer antiretroviral agents with better toxicity profiles and treatment adherence. The major side effects related to EFV have been widely described in clinical studies, however the mechanisms that participate in their pathogenesis remain largely ununderstood. This review provides an insight into the cellular and molecular mechanisms responsible for the development of the most significant undesired effects induced by efavirenz, both short- and long-term, revealed by in vitro and in vivo experimental pharmacological research. Growing evidence implicates the drug in energy metabolism, mitochondrial function, and other cellular processes involved in stress responses including oxidative stress, inflammation and autophagy.
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Affiliation(s)
- Nadezda Apostolova
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia-Centro de Investigación Biomédica en Red-Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain.
| | - Ana Blas-Garcia
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia-Centro de Investigación Biomédica en Red-Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain
| | - Maria J Galindo
- Unidad de Enfermedades Infecciosas - Medicina Interna, Hospital Clínico Universitario de Valencia, Spain
| | - Juan V Esplugues
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Valencia-Centro de Investigación Biomédica en Red-Enfermedades Hepáticas y Digestivas (CIBERehd), Valencia, Spain; FISABIO-Hospital Universitario Dr. Peset, Valencia, Spain
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32
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Antiretroviral Treatment with Efavirenz Disrupts the Blood-Brain Barrier Integrity and Increases Stroke Severity. Sci Rep 2016; 6:39738. [PMID: 28008980 PMCID: PMC5180178 DOI: 10.1038/srep39738] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 11/28/2016] [Indexed: 12/13/2022] Open
Abstract
The introduction of antiretroviral drugs (ARVd) changed the prognosis of HIV infection from a deadly disease to a chronic disease. However, even with undetectable viral loads, patients still develop a wide range of pathologies, including cerebrovascular complications and stroke. It is hypothesized that toxic side effects of ARVd may contribute to these effects. To address this notion, we evaluated the impact of several non-nucleoside reverse transcriptase inhibitors (NNRTI; Efavirenz, Etravirine, Rilpivirine and Nevirapine) on the integrity of the blood-brain barrier, and their impact on severity of stroke. Among studied drugs, Efavirenz, but not other NNRTIs, altered claudin-5 expression, increased endothelial permeability, and disrupted the blood-brain barrier integrity. Importantly, Efavirenz exposure increased the severity of stroke in a model of middle cerebral artery occlusion in mice. Taken together, these results indicate that selected ARVd can exacerbate HIV-associated cerebrovascular pathology. Therefore, careful consideration should be taken when choosing an anti-retroviral therapy regimen.
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33
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Brüning A, Jückstock J, Kost B, Tsikouras P, Weissenbacher T, Mahner S, Mylonas I. Induction of DNA damage and apoptosis in human leukemia cells by efavirenz. Oncol Rep 2016; 37:617-621. [PMID: 27878300 DOI: 10.3892/or.2016.5243] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 10/17/2016] [Indexed: 11/06/2022] Open
Abstract
As part of the efforts to drug repurposing, some HIV drugs have recently been identified to exert anticancer effects. Selected nucleoside analogues of nucleosidic reverse-transcriptase inhibitors (NRTIs) have been shown to interfere with RNA transcription of HI viruses as well as with the replication of DNA in cancer cells. Non-nucleosidic reverse transcriptase inhibitors (NNRTIs) are believed to have less effects on human DNA replication and, thus, on cancer cell proliferation. Assessment of the effect of the NNRTI efavirenz in human cancer cells, however, revealed a high sensitivity of leukemia cells to this agent at pharmacologically relevant concentrations of less than 10 µg/ml. Cell death induced by efavirenz was caused by apoptosis, as shown by FACScan analysis (Annexin binding) and western blot analysis (cleavage of caspases and PARP). Western blot analyses also revealed a pronounced activation and phosphorylation of the DNA damage marker proteins p53, chk2 and H2AX, indicating DNA replication and genomic integrity as primary targets of efavirenz in leukemia cells.
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Affiliation(s)
- Ansgar Brüning
- Department of Gynecology and Obstetrics, Division of Infectious Diseases in Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians University of Munich, D-80337 Munich, Germany
| | - Julia Jückstock
- Department of Gynecology and Obstetrics, Division of Infectious Diseases in Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians University of Munich, D-80337 Munich, Germany
| | - Bernd Kost
- Department of Gynecology and Obstetrics, Division of Infectious Diseases in Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians University of Munich, D-80337 Munich, Germany
| | - Panagiotis Tsikouras
- Department of Obstetrics and Gynecology, Democrite University Thrace, 68100 Alexandroupolis, Greece
| | - Tobias Weissenbacher
- Department of Gynecology and Obstetrics, Division of Infectious Diseases in Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians University of Munich, D-80337 Munich, Germany
| | - Sven Mahner
- Department of Gynecology and Obstetrics, Division of Infectious Diseases in Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians University of Munich, D-80337 Munich, Germany
| | - Ioannis Mylonas
- Department of Gynecology and Obstetrics, Division of Infectious Diseases in Obstetrics and Gynecology, Campus Innenstadt, Ludwig-Maximilians University of Munich, D-80337 Munich, Germany
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34
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Ivanov AV, Valuev-Elliston VT, Ivanova ON, Kochetkov SN, Starodubova ES, Bartosch B, Isaguliants MG. Oxidative Stress during HIV Infection: Mechanisms and Consequences. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:8910396. [PMID: 27829986 PMCID: PMC5088339 DOI: 10.1155/2016/8910396] [Citation(s) in RCA: 214] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/18/2016] [Indexed: 12/15/2022]
Abstract
It is generally acknowledged that reactive oxygen species (ROS) play crucial roles in a variety of natural processes in cells. If increased to levels which cannot be neutralized by the defense mechanisms, they damage biological molecules, alter their functions, and also act as signaling molecules thus generating a spectrum of pathologies. In this review, we summarize current data on oxidative stress markers associated with human immunodeficiency virus type-1 (HIV-1) infection, analyze mechanisms by which this virus triggers massive ROS production, and describe the status of various defense mechanisms of the infected host cell. In addition, we have scrutinized scarce data on the effect of ROS on HIV-1 replication. Finally, we present current state of knowledge on the redox alterations as crucial factors of HIV-1 pathogenicity, such as neurotoxicity and dementia, exhaustion of CD4+/CD8+ T-cells, predisposition to lung infections, and certain side effects of the antiretroviral therapy, and compare them to the pathologies associated with the nitrosative stress.
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Affiliation(s)
- Alexander V. Ivanov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, Moscow 119991, Russia
| | - Vladimir T. Valuev-Elliston
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, Moscow 119991, Russia
| | - Olga N. Ivanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, Moscow 119991, Russia
| | - Sergey N. Kochetkov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, Moscow 119991, Russia
| | - Elizaveta S. Starodubova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str. 32, Moscow 119991, Russia
- M. P. Chumakov Institute of Poliomyelitis and Viral Encephalitides, Moscow 142782, Russia
| | - Birke Bartosch
- Cancer Research Center Lyon, INSERM U1052 and CNRS 5286, Lyon University, 69003 Lyon, France
- DevWeCan Laboratories of Excellence Network (Labex), France
| | - Maria G. Isaguliants
- Riga Stradins University, Riga LV-1007, Latvia
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 17177 Stockholm, Sweden
- N. F. Gamaleya Research Center of Epidemiology and Microbiology, Moscow 123098, Russia
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Raj M, Gupta P, Thapliyal N, Goyal RN. A Novel Hybrid Nano-composite Grafted Electrochemically Reduced Graphene Oxide Based Sensor for Sensitive Determination of Efavirenz. ELECTROANAL 2016. [DOI: 10.1002/elan.201600397] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mamta Raj
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee - 247667 India
| | - Pankaj Gupta
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee - 247667 India
| | - Neeta Thapliyal
- Department of Pharmaceutical Chemistry, College of Health Sciences; University of KwaZulu-Natal; Durban 4000 South Africa
| | - Rajendra N. Goyal
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee - 247667 India
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Foufelle F, Fromenty B. Role of endoplasmic reticulum stress in drug-induced toxicity. Pharmacol Res Perspect 2016; 4:e00211. [PMID: 26977301 PMCID: PMC4777263 DOI: 10.1002/prp2.211] [Citation(s) in RCA: 163] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 12/14/2015] [Indexed: 12/13/2022] Open
Abstract
Drug‐induced toxicity is a key issue for public health because some side effects can be severe and life‐threatening. These adverse effects can also be a major concern for the pharmaceutical companies since significant toxicity can lead to the interruption of clinical trials, or the withdrawal of the incriminated drugs from the market. Recent studies suggested that endoplasmic reticulum (ER) stress could be an important event involved in drug liability, in addition to other key mechanisms such as mitochondrial dysfunction and oxidative stress. Indeed, drug‐induced ER stress could lead to several deleterious effects within cells and tissues including accumulation of lipids, cell death, cytolysis, and inflammation. After recalling important information regarding drug‐induced adverse reactions and ER stress in diverse pathophysiological situations, this review summarizes the main data pertaining to drug‐induced ER stress and its potential involvement in different adverse effects. Drugs presented in this review are for instance acetaminophen (APAP), arsenic trioxide and other anticancer drugs, diclofenac, and different antiretroviral compounds. We also included data on tunicamycin (an antibiotic not used in human medicine because of its toxicity) and thapsigargin (a toxic compound of the Mediterranean plant Thapsia garganica) since both molecules are commonly used as prototypical toxins to induce ER stress in cellular and animal models.
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Kast RE, Ramiro S, Lladó S, Toro S, Coveñas R, Muñoz M. Antitumor action of temozolomide, ritonavir and aprepitant against human glioma cells. J Neurooncol 2015; 126:425-31. [PMID: 26603162 DOI: 10.1007/s11060-015-1996-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 11/05/2015] [Indexed: 02/02/2023]
Abstract
In the effort to find better treatments for glioblastoma we tested several currently marketed non-chemotherapy drugs for their ability to enhance the standard cytotoxic drug currently used to treat glioblastoma- temozolomide. We tested four antiviral drugs- acyclovir, cidofovir, maraviroc, ritonavir, and an anti-emetic, aprepitant. We found no cytotoxicity of cidofovir and discussed possible reasons for discrepancy from previous findings of others. We also found no cytotoxicity from acyclovir or maraviroc also in contradistinction to predictions. Cytotoxicity to glioma cell line GAMG for temozolomide alone was 14%, aprepitant alone 7%, ritonavir alone 14%, while temozolomide + aprepitant was 19%, temozolomide + ritonavir 34%, ritonavir + aprepitant 64 %, and all three, temozolomide + ritonavir + aprepitant 78%. We conclude that a remarkable synergy exists between aprepitant and ritonavir. Given the long clinical experience with these two well-tolerated drugs in treating non-cancer conditions, and the current median survival of glioblastoma of 2 years, a trial is warranted of adding these two simple drugs to current standard treatment with temozolomide.
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Affiliation(s)
- Richard E Kast
- IIAIGC Headquarters, Dean of Studies, 22 Church St, Burlington, VT, 05401, USA.
| | - Susana Ramiro
- Research Laboratory on Neuropeptides (IBIS), Virgen del Rocío University Hospital, Avda. Manuel Siurot s/n, 41013, Seville, Spain
| | - Sandra Lladó
- Research Laboratory on Neuropeptides (IBIS), Virgen del Rocío University Hospital, Avda. Manuel Siurot s/n, 41013, Seville, Spain
| | - Salvador Toro
- Research Laboratory on Neuropeptides (IBIS), Virgen del Rocío University Hospital, Avda. Manuel Siurot s/n, 41013, Seville, Spain
| | - Rafael Coveñas
- Laboratory of Neuroanatomy of the Peptidergic Systems (Lab. 14), Institute of Neurosciences of Castilla y León (INCYL), University of Salamanca, Salamanca, Spain
| | - Miguel Muñoz
- Research Laboratory on Neuropeptides (IBIS), Virgen del Rocío University Hospital, Avda. Manuel Siurot s/n, 41013, Seville, Spain.
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Bertrand L, Toborek M. Dysregulation of Endoplasmic Reticulum Stress and Autophagic Responses by the Antiretroviral Drug Efavirenz. Mol Pharmacol 2015; 88:304-15. [PMID: 25987489 DOI: 10.1124/mol.115.098590] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 05/15/2015] [Indexed: 12/23/2022] Open
Abstract
Increasing evidence demonstrates that the antiretroviral drugs (ARVds) used for human immunodeficiency virus (HIV) treatment have toxic effects that result in various cellular and tissue pathologies; however, their impact on the cells composing the blood-brain barrier is poorly understood. The current study focused on ARVds, used either in combination or alone, on the induction of endoplasmic reticulum (ER) stress responses in human brain endothelial cells. Among studied drugs (efavirenz, tenofovir, emtricitabine, lamivudine, and indinavir), only efavirenz increased ER stress via upregulation and activation of protein kinase-like ER kinase PERK and inositol requiring kinase 1α (IRE1α). At the same time, efavirenz diminished autophagic activity, a surprising result because typically the induction of ER stress is linked to enhanced autophagy. These results were confirmed in microvessels of HIV transgenic mice chronically administered with efavirenz. In a series of further experiments, we identified that efavirenz dysregulated ER stress and autophagy by blocking the activity of the Beclin-1/Atg14/PI3KIII complex in regard to synthesis of phosphatidylinositol 3-phosphate, a process that is linked to the formation of autophagosomes. Because autophagy is a protective mechanism involved in the removal of dysfunctional proteins and organelles, its inhibition can contribute to the toxicity of efavirenz or the development of neurodegenerative disease in HIV patients treated with this drug.
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Affiliation(s)
- Luc Bertrand
- Department of Biochemistry and Molecular Biology, University of Miami School of Medicine, Miami, Florida
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, University of Miami School of Medicine, Miami, Florida
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Induction of suicidal erythrocyte death by nelfinavir. Toxins (Basel) 2015; 7:1616-28. [PMID: 26008229 PMCID: PMC4448164 DOI: 10.3390/toxins7051616] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/28/2015] [Accepted: 05/05/2015] [Indexed: 12/31/2022] Open
Abstract
The HIV protease inhibitor, nelfinavir, primarily used for the treatment of HIV infections, has later been shown to be effective in various infectious diseases including malaria. Nelfinavir may trigger mitochondria-independent cell death. Erythrocytes may undergo eryptosis, a mitochondria-independent suicidal cell death characterized by cell shrinkage and phosphatidylserine translocation to the erythrocyte surface. Triggers of eryptosis include oxidative stress and increase of cytosolic Ca2+-activity ([Ca2+]i). During malaria, accelerated death of infected erythrocytes may decrease parasitemia and thus favorably influence the clinical course of the disease. In the present study, phosphatidylserine abundance at the cell surface was estimated from annexin V binding, cell volume from forward scatter, reactive oxidant species (ROS) from 2',7'-dichlorodihydrofluorescein diacetate (DCFDA) fluorescence, and [Ca2+]i from Fluo3-fluorescence. A 48 h treatment of human erythrocytes with nelfinavir significantly increased the percentage of annexin-V-binding cells (≥5µg/mL), significantly decreased forward scatter (≥2.5µg/mL), significantly increased ROS abundance (10 µg/mL), and significantly increased [Ca2+]i (≥5 µg/mL). The up-regulation of annexin-V-binding following nelfinavir treatment was significantly blunted, but not abolished by either addition of the antioxidant N-acetylcysteine (1 mM) or removal of extracellular Ca2+. In conclusion, exposure of erythrocytes to nelfinavir induces oxidative stress and Ca2+ entry, thus leading to suicidal erythrocyte death characterized by erythrocyte shrinkage and erythrocyte membrane scrambling.
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