1
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Stoenescu AF, Popescu CP, Florescu SA, Vancea G, Ceausu E, Calistru P. The Prevalence of Depression and Its Potential Link to Liver Fibrosis in Patients Diagnosed With Chronic Hepatitis C Virus Infection Prior to the Initiation of Direct-Acting Antiviral Treatment. Cureus 2024; 16:e62970. [PMID: 38912074 PMCID: PMC11194022 DOI: 10.7759/cureus.62970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2024] [Indexed: 06/25/2024] Open
Abstract
Introduction Chronic hepatitis C virus (HCV) infection is associated with various extrahepatic manifestations, including depression. This study aimed to determine the prevalence of depression in treatment-naive HCV patients and explore its potential association with liver fibrosis severity. Methodology A consecutive cohort of 50 treatment-naive HCV patients without coinfections was enrolled over six months. Depression was assessed using the Hamilton Depression Rating Scale (HAM-D), and the liver fibrosis stage was evaluated using Fibroscan elastography. Results The cohort comprised 62% females (n=31) and 38% males (n=19), with ages ranging from 27 to 76 years. HAM-D scores indicated mild depression in 78% (n=39) and moderate depression in 16% (n=8) of patients. Notably, patients with mild depression displayed varying degrees of liver fibrosis (F0, F1, and F2), while all patients with moderate depression had advanced fibrosis (F3). Based on the multiple regression model, fibrosis was a statistically significant independent predictor with an unstandardized regression coefficient (B) of 3.115 (p=0.007). Conclusions Our findings point to a high prevalence of depression in treatment-naive HCV patients. Interestingly, there might be a link between depression severity and the stage of liver fibrosis, with advanced fibrosis potentially associated with more severe depression.
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Affiliation(s)
- Andreea Florentina Stoenescu
- Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Dr. Victor Babes Hospital of Infectious and Tropical Diseases, Bucharest, ROU
| | - Corneliu Petru Popescu
- Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Dr. Victor Babes Hospital of Infectious and Tropical Diseases, Bucharest, ROU
| | - Simin Aysel Florescu
- Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Dr. Victor Babes Hospital of Infectious and Tropical Diseases, Bucharest, ROU
| | - Geta Vancea
- Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Dr. Victor Babes Hospital of Infectious and Tropical Diseases, Bucharest, ROU
| | - Emanoil Ceausu
- Infectious Diseases, Academy of Medical Sciences, Dr. Victor Babes Hospital of Infectious and Tropical Diseases, Bucharest, ROU
| | - Petre Calistru
- Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Bucharest, ROU
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2
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Habashy NH, Hamouda AF, Abu Serie MM. Identification of effective anti-HCV and anti-HIV royal jelly constituents and their acute toxicity evaluation in Albino rats. Food Chem Toxicol 2023; 182:114170. [PMID: 37949206 DOI: 10.1016/j.fct.2023.114170] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/18/2023] [Accepted: 11/01/2023] [Indexed: 11/12/2023]
Abstract
Few studies on royal jelly's (RJ) antiviral activities and toxicity have been conducted. Here, we investigated the antioxidant properties of RJ that was fractionated into soluble fraction (SF), non-soluble fraction (NSF), water-soluble protein fraction (crude protein fraction, CPF), PF30, PF40, PF50, and PF60. The PFs were identified by SDS-PAGE, and phenolic constituents of SF were detected by HPLC. The qualitative anti-HCV, immunomodulatory, and predicted impact of the studied fractions on ERK2/MAPK14 (activated by HCV) were investigated. The influences of RJ fractions on HIV CD4, reverse-transcriptase, and integrase were examined. The acute toxicity of RJ, SF, NSF, and CPF-PF50 (all CPF except PF50) was tested. Results showed that RJ had potent antioxidant efficiency, and its SF contains functional phenolic compounds. PF30, PF40, and PF50 only showed anti-HCV potency, and PF50 had an immunomodulatory effect against HCV and predicted inhibitory influence on ERK2/MAPK14. RJ-PFs, particularly PF60, showed the most effective anti-HIV ingredients. A single ip injection of RJ fractions at different concentrations revealed that SF was the safest one. Whereas NSF was the most toxic at 700-5000 mg/kg b.w., its toxicity was reversed spontaneously after seven days. Thus, this study provides valuable information about the antiviral activities and toxicity of RJ constituents.
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Affiliation(s)
- Noha H Habashy
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Asmaa F Hamouda
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Marwa M Abu Serie
- Department of Medical Biotechnology, Genetic Engineering, and Biotechnology Research Institute, City for Scientific Research and Technology Applications (SRTA-City), New Borg EL-Arab, 21934, Alexandria, Egypt.
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3
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Zhang W, Du F, Wang L, Bai T, Zhou X, Mei H. Hepatitis Virus-associated Non-hodgkin Lymphoma: Pathogenesis and Treatment Strategies. J Clin Transl Hepatol 2023; 11:1256-1266. [PMID: 37577221 PMCID: PMC10412707 DOI: 10.14218/jcth.2022.00079s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/21/2023] [Accepted: 03/22/2023] [Indexed: 07/03/2023] Open
Abstract
Over the last decade, epidemiological studies have discovered a link between hepatitis C virus (HCV) and hepatitis B virus (HBV) infection and non-Hodgkin lymphoma (NHL). The regression of HCV-associated NHL after HCV eradication is the most compelling proof supporting HCV infection's role in lymphoproliferative diseases. HBV infection was found to significantly enhance the incidence of NHL, according to the epidemiological data. The exact mechanism of HCV leading to NHL has not been fully clarified, and there are mainly the following possible mechanisms: (1) Indirect mechanisms: stimulation of B lymphocytes by extracellular HCV and cytokines; (2) Direct mechanisms: oncogenic effects mediated by intracellular HCV proteins; (3) hit-and-run mechanism: permanent genetic B lymphocytes damage by the transitional entry of HCV. The specific role of HBV in the occurrence of NHL is still unclear, and the research on its mechanism is less extensively explored than HCV, and there are mainly the following possible mechanisms: (1) Indirect mechanisms: stimulation of B lymphocytes by extracellular HBV; (2) Direct mechanisms: oncogenic effects mediated by intracellular HBV DNA. In fact, it is reasonable to consider direct-acting antivirals (DAAs) as first-line therapy for indolent HCV-associated B-NHL patients who do not require immediate chemotherapy. Chemotherapy for NHL is affected by HBV infection and replication. At the same time, chemotherapy can also activate HBV replication. Following recent guidelines, all patients with HBsAg positive/HBV DNA≥2,000 IU/mL should be treated for HBV. The data on epidemiology, interventional studies, and molecular mechanisms of HCV and HBV-associated B-NHL are systematically summarized in this review.
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Affiliation(s)
- Wenjing Zhang
- Department of Hematology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Fan Du
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Li Wang
- Department of Hematology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tao Bai
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiang Zhou
- Department of Internal Medicine II, Würzburg University Hospital, University of Würzburg, Würzburg, Germany
| | - Heng Mei
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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4
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Bjorgen JC, Dick JK, Cromarty R, Hart GT, Rhein J. NK cell subsets and dysfunction during viral infection: a new avenue for therapeutics? Front Immunol 2023; 14:1267774. [PMID: 37928543 PMCID: PMC10620977 DOI: 10.3389/fimmu.2023.1267774] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/25/2023] [Indexed: 11/07/2023] Open
Abstract
In the setting of viral challenge, natural killer (NK) cells play an important role as an early immune responder against infection. During this response, significant changes in the NK cell population occur, particularly in terms of their frequency, location, and subtype prevalence. In this review, changes in the NK cell repertoire associated with several pathogenic viral infections are summarized, with a particular focus placed on changes that contribute to NK cell dysregulation in these settings. This dysregulation, in turn, can contribute to host pathology either by causing NK cells to be hyperresponsive or hyporesponsive. Hyperresponsive NK cells mediate significant host cell death and contribute to generating a hyperinflammatory environment. Hyporesponsive NK cell populations shift toward exhaustion and often fail to limit viral pathogenesis, possibly enabling viral persistence. Several emerging therapeutic approaches aimed at addressing NK cell dysregulation have arisen in the last three decades in the setting of cancer and may prove to hold promise in treating viral diseases. However, the application of such therapeutics to treat viral infections remains critically underexplored. This review briefly explores several therapeutic approaches, including the administration of TGF-β inhibitors, immune checkpoint inhibitors, adoptive NK cell therapies, CAR NK cells, and NK cell engagers among other therapeutics.
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Affiliation(s)
- Jacob C. Bjorgen
- Division of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Jenna K. Dick
- Division of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, MN, United States
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States
- Center for Immunology, University of Minnesota, Minneapolis, MN, United States
| | - Ross Cromarty
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States
| | - Geoffrey T. Hart
- Division of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, MN, United States
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, United States
- Center for Immunology, University of Minnesota, Minneapolis, MN, United States
| | - Joshua Rhein
- Division of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, MN, United States
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5
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The Role of Non-Coding RNAs in Liver Disease, Injury, and Regeneration. Cells 2023; 12:cells12030359. [PMID: 36766701 PMCID: PMC9914052 DOI: 10.3390/cells12030359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/04/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Non-coding RNAs (ncRNAs) have diverse functions in health and pathology in many tissues, including the liver. This review highlights important microRNAs (miRs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs) in liver disease and regeneration. Greater attention is given to more prevalent and well characterized RNAs, including: miR-122, miR-21, the let-7 family of miRs, miR-451a, miR-144, and MALAT1.
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6
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Henning AN, Budeebazar M, Boldbaatar D, Yagaanbuyant D, Duger D, Batsukh K, Zhou H, Baumann R, Allison RD, Alter HJ, Dashdorj N, De Giorgi V. Peripheral B cells from patients with hepatitis C virus-associated lymphoma exhibit clonal expansion and an anergic-like transcriptional profile. iScience 2022; 26:105801. [PMID: 36619973 PMCID: PMC9813790 DOI: 10.1016/j.isci.2022.105801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/27/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
Chronic HCV infection remains a global health concern due to its involvement in hepatic and extrahepatic diseases, including B cell non-Hodgkin lymphoma (BNHL). Clinical and epidemiological evidence support a causal role for HCV in BNHL development, although mechanistic insight is lacking. We performed RNA-sequencing on peripheral B cells from patients with HCV alone, BNHL alone, and HCV-associated BNHL to identify unique and shared transcriptional profiles associated with transformation. In patients with HCV-associated BNHL, we observed the enrichment of an anergic-like gene signature and evidence of clonal expansion that was correlated with the expression of epigenetic regulatory genes. Our data support a role for viral-mediated clonal expansion of anergic-like B cells in HCV-associated BNHL development and suggest epigenetic dysregulation as a potential mechanism driving expansion. We propose epigenetic mechanisms may be involved in both HCV-associated lymphoma and regulation of B cell anergy, representing an attractive target for clinical interventions.
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Affiliation(s)
- Amanda N. Henning
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA,Corresponding author
| | - Myagmarjav Budeebazar
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia,Liver Center, Ulaanbaatar 14230, Mongolia
| | | | | | - Davaadorj Duger
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia
| | - Khishigjargal Batsukh
- Center of Hematology and Bone Marrow Transplantation, First Central Hospital of Mongolia, Ulaanbaatar 14210, Mongolia
| | - Huizhi Zhou
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ryan Baumann
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Robert D. Allison
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Harvey J. Alter
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Naranjargal Dashdorj
- Liver Center, Ulaanbaatar 14230, Mongolia,Onom Foundation, Ulaanbaatar 17011, Mongolia
| | - Valeria De Giorgi
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA,Corresponding author
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7
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Alzahrani N. Hepatitis C Virus, Insulin Resistance, and Diabetes: A Review. Microbiol Immunol 2022; 66:453-459. [PMID: 35941761 DOI: 10.1111/1348-0421.13023] [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: 01/25/2022] [Revised: 07/19/2022] [Accepted: 08/03/2022] [Indexed: 12/15/2022]
Abstract
Hepatitis C virus (HCV) infection and diabetes mellitus (DM) are two chronic diseases that are a cause of significant health and economic burdens worldwide. HCV is associated with the development of insulin resistance (IR) and diabetes mellitus (DM). The mechanisms through which HCV induces IR and DM include direct viral effects, pro-inflammatory cytokines and other immune-mediated processes. Type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) are both chronic diseases that involve impaired glucose homeostasis, albeit through different mechanisms. T1DM is an autoimmune disease that leads to the destruction of pancreatic beta cells resulting in insulin deficiency. In T2DM, a combination of peripheral insulin resistance and irregular production of insulin eventually lead to beta cell destruction and insulin insufficiency. Both type 1 and type 2 DM etiologies involve a combination of genetic and environmental factors. The data on HCV and T1DM association is limited, unlike T2DM, where a large body of evidence linking HCV to T2DM is available. Here, we intend to outline the current state of knowledge on HCV, IR, and DM. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Nabeel Alzahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, Riyadh, 14611, Saudi Arabia
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8
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Alhetheel AF. Impact of Hepatitis C Virus Infection of Peripheral Blood Mononuclear Cells on the Immune System. FRONTIERS IN VIROLOGY 2022. [DOI: 10.3389/fviro.2021.810231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hepatitis C is a worldwide liver disease caused by hepatitis C virus (HCV) infection. The virus causes acute and chronic liver inflammation, and it is transmitted mainly by exposure to contaminated blood. HCV is capable of infecting hepatocytes and peripheral blood mononuclear cells, causing complications and disease progression. This mini review provides an overview of HCV infection, including details on the virological aspects, infection of the immune cells, and its impact on the immune system.
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9
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Desombere I, Van Houtte F, Farhoudi A, Verhoye L, Buysschaert C, Gijbels Y, Couvent S, Swinnen W, Van Vlierberghe H, Elewaut A, Magri A, Stamataki Z, Meuleman P, McKeating JA, Leroux-Roels G. A Role for B Cells to Transmit Hepatitis C Virus Infection. Front Immunol 2021; 12:775098. [PMID: 34975862 PMCID: PMC8716873 DOI: 10.3389/fimmu.2021.775098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/29/2021] [Indexed: 12/02/2022] Open
Abstract
Hepatitis C virus (HCV) is highly variable and transmits through infected blood to establish a chronic liver infection in the majority of patients. Our knowledge on the infectivity of clinical HCV strains is hampered by the lack of in vitro cell culture systems that support efficient viral replication. We and others have reported that HCV can associate with and infect immune cells and may thereby evade host immune surveillance and elimination. To evaluate whether B cells play a role in HCV transmission, we assessed the ability of B cells and sera from recent (<2 years) or chronic (≥ 2 years) HCV patients to infect humanized liver chimeric mice. HCV was transmitted by B cells from chronic infected patients whereas the sera were non-infectious. In contrast, B cells from recently infected patients failed to transmit HCV to the mice, whereas all serum samples were infectious. We observed an association between circulating anti-glycoprotein E1E2 antibodies and B cell HCV transmission. Taken together, our studies provide evidence for HCV transmission by B cells, findings that have clinical implications for prophylactic and therapeutic antibody-based vaccine design.
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Affiliation(s)
| | - Freya Van Houtte
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Ali Farhoudi
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Lieven Verhoye
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | | | - Yvonne Gijbels
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Sibyl Couvent
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | | | - Hans Van Vlierberghe
- Department of Hepatology and Gastroenterology, Ghent University Hospital, Ghent, Belgium
- Laboratory of Hepatology Research, Ghent University, Ghent, Belgium
| | - André Elewaut
- Department of Hepatology and Gastroenterology, Ghent University Hospital, Ghent, Belgium
- Laboratory of Hepatology Research, Ghent University, Ghent, Belgium
| | - Andrea Magri
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Zania Stamataki
- Institute of Immunology and Immunotherapy, Centre for Liver and Gastrointestinal Research, University of Birmingham, Birmingham, United Kingdom
- National Institute for Health Researc (NIHR) Birmingham Liver Biomedical Research Centre, University Hospitals Birmingham National Health Service (NHS) Foundation Trust, Birmingham, United Kingdom
| | - Philip Meuleman
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Jane A McKeating
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
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10
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Chemello L, Cavalletto L, Ferrari S, Monaco S. Impact of direct acting antivirals (DAA) on neurologic disorders in chronic hepatitis C. Minerva Gastroenterol (Torino) 2021; 67:234-243. [PMID: 34672486 DOI: 10.23736/s2724-5985.21.02865-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Neurologic and neuropsychiatric manifestations sometimes provide the first evidence of an unknown HCV infection. These conditions develop with a variable ranging of morbidity, including: "brain fog," fatigue, subtle cognitive and attention impairment, but also with more severe complications or acute presentation, like encephalomyelitis, encephalopathy, stroke and peripheral nerves involvement. EVIDENCE ACQUISITION We performed a systematic literature search on PubMed, Cochrane Library and Web of Science databases for articles only in English language, that assessed the relationship between "DAA treatment and neurologic disorders" and after the attainment of SVR in full reports of cases that received the DAA schedule from January 2015 to December 2019. The following terms were used: "chronic Hepatitis C," "HCV," "DAA," "direct-acting antiviral," "SVR," "sustained virologic response," peripheral neuropathy" and "neurologic diseases or disorders." EVIDENCE SYNTHESIS HCV infection does not only involve the liver, causing cirrhosis and hepatocellular carcinoma (HCC), but also induces extrahepatic manifestations (EHM), mainly due to a complex immune disease, that damage small and medium vessels, called "mixed cryoglobulinemic vasculitis" (MCV). This kind of mechanism generates most of the HCV-induced neurological damages. Since 2015, the availability of direct-acting antiviral (DAA) oral molecules interfering with HCV replication has completely revolutionized therapeutic options and the target population, which now includes patients aged 12 to 80 years and with advanced liver disease. Relevant was the highlighted DAA effectiveness by achievement of a sustained virologic response (SVR) in about 95% of cases, showing a great tolerability. CONCLUSIONS This favorable effect has arisen in a wide category of patients infected by HCV, including subjects with cirrhosis and complications and/or with EHM, who showed a significant improvement of their symptoms and the disease regression. In this concise review, we examine the clinical outcomes after the introduction of the DAA for the treatment of chronic hepatitis C (CHC), focusing on the neurologic disorders and concluding that there is a strong amelioration of neurologic conditions in several cases, particularly, after attaining the viral eradication with a favorable course in most treated cases.
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Affiliation(s)
- Liliana Chemello
- Unit of Internal Medicine and Hepatology, Department of Medicine (DIMED), Clinica Medica 5, University Hospital of Padua, Padua, Italy -
| | - Luisa Cavalletto
- Unit of Internal Medicine and Hepatology, Department of Medicine (DIMED), Clinica Medica 5, University Hospital of Padua, Padua, Italy
| | - Sergio Ferrari
- Unit of Neurology, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Salvatore Monaco
- Unit of Neurology, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
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11
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Nevola R, Rinaldi L, Zeni L, Romano C, Marrone A, Galiero R, Pafundi PC, Acierno C, Vetrano E, Adinolfi LE. Changes in clinical scenarios, management, and perspectives of patients with chronic hepatitis C after viral clearance by direct-acting antivirals. Expert Rev Gastroenterol Hepatol 2021; 15:643-656. [PMID: 33445990 DOI: 10.1080/17474124.2021.1877136] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Hepatitis C virus (HCV) causes a systemic infection inducing hepatic and extrahepatic diseases. These latter involve cardiovascular system, kidney, brain, endocrine, glucose, and lipid metabolism, and the immune system. HCV infection is associated with an increased risk of morbidity and mortality for both hepatic and extrahepatic events. Direct-acting antivirals (DAA), introduced in the most recent years for HCV treatment, are effective in up to 99% of cases and have changed the clinical scenarios and management of these patients. AREAS COVERED The literature on the impact of HCV clearance by DAA on both hepatic and extrahepatic disease outcomes has been analyzed and discussed in this review in order to summarize the full therapeutic potential and its weaknesses. EXPERT OPINION Patients achieving HCV clearance have improved hepatic and extrahepatic diseases, quality of life and survival. They have lower incidence of cardiovascular disease, type 2 diabetes, kidney damage, and immuno-mediated manifestations. However, the improvements are related to the degree of pre-treatment organ damage. Therefore, a significant percentage of patients with advanced disease remains at risk of morbidity and mortality and must be monitored in the post-treatment. In addition, data emphasize the importance of starting treatment during the early stages of HCV infection.
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Affiliation(s)
- Riccardo Nevola
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Luca Rinaldi
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Letizia Zeni
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Ciro Romano
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Aldo Marrone
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Raffaele Galiero
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Pia Clara Pafundi
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Carlo Acierno
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Erica Vetrano
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Luigi Elio Adinolfi
- Internal Medicine, Department of Advanced Medical and Surgery Sciences, University of Campania Luigi Vanvitelli, Naples, Italy
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12
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Villalba B, Johnson KA. Rate-limiting pyrophosphate release by hepatitis C virus polymerase NS5B improves fidelity. J Biol Chem 2020; 295:16436-16444. [PMID: 32938715 DOI: 10.1074/jbc.ra120.015394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/04/2020] [Indexed: 01/02/2023] Open
Abstract
The hepatitis C virus RNA-dependent RNA polymerase NS5B is responsible for the replication of the viral genome. Previous studies have uncovered NTP-mediated excision mechanisms that may be responsible for aiding in maintaining fidelity (the frequency of incorrect incorporation events relative to correct), but little is known about the fidelity of NS5B. In this study, we used transient-state kinetics to examine the mechanistic basis for polymerase fidelity. We observe a wide range of efficiency for incorporation of various mismatched base pairs and have uncovered a mechanism in which the rate constant for pyrophosphate release is slowed for certain misincorporation events. This results in an increase in fidelity against these specific misincorporations. Furthermore, we discover that some mismatches are highly unfavorable and cannot be observed under the conditions used here. The calculated fidelity of NS5B ranges between 10-4-10-9 for different mismatches.
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Affiliation(s)
- Brian Villalba
- Institutes for Cell and Molecular Biology, University of Texas at Austin, Austin, Texas, USA
| | - Kenneth A Johnson
- Institutes for Cell and Molecular Biology, University of Texas at Austin, Austin, Texas, USA.
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13
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de Gennaro N, Diella L, Monno L, Angarano G, Milella M, Saracino A. Efficacy and tolerability of DAAs in HCV-monoinfected and HCV/HIV-coinfected patients with psychiatric disorders. BMC Infect Dis 2020; 20:196. [PMID: 32138757 PMCID: PMC7059311 DOI: 10.1186/s12879-020-4922-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 02/26/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Few data are available regarding the use of direct antiviral agents (DAAs) for chronic hepatitis C in psychiatric patients. The aim of the study is to assess safety and outcome of DAAs in patients with psychiatric comorbidities. METHODS This retrospective, observational, single-centre study enrolled patients treated with psychiatric drugs who initiated DAAs between 2015 and 2018. Patients were classified into two groups: A (on anxiolitycs/antidepressant) and B (on antipsychotics). Week-12 sustained virological response (SVR-12) and adverse events (AEs) were evaluated. RESULTS One hundred forty-four patients were included (A:101; B:43). Patients were 49.3% males, mean age 60 years (SD ± 13.5); 31.9% cirrhotic; 125 (86.8%) HCV-monoinfected and 19 (13.2%) HCV /HIV-coinfected. Twenty patients (13.8%) required a change of psychiatric therapy before initiation of DAA. Overall, SVR-12 was achieved in 88.2% of subjects in intention-to-treat(ITT)-analysis. Lower SVR rates were observed in group B vs A (79% vs 92%, p = 0.045) and in those changing psychiatric drugs vs others (8% vs 30%, p = 0.015). According to per-protocol (PP)-analysis, SVR-12 was achieved in 93/95 (97.9%) in group A versus 34/36 (94.4%) in group B (p = 0.30). At least one AE occurred in 60 patients (41.6%), including 10 severe AEs, leading to 3 discontinuations. AEs were more frequently reported in group A (p = 0.015). CONCLUSIONS The study confirms effectiveness and safety of DAA-based treatment also in this special population, even if a careful evaluation of history and drug-drug interactions is warranted.
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Affiliation(s)
- Nicolò de Gennaro
- Clinic of Infectious Diseases, University of Bari, University Hospital Policlinico, Piazza Giulio Cesare n. 11, 70124, Bari, Italy.
| | - Lucia Diella
- Clinic of Infectious Diseases, University of Bari, University Hospital Policlinico, Piazza Giulio Cesare n. 11, 70124, Bari, Italy
| | - Laura Monno
- Clinic of Infectious Diseases, University of Bari, University Hospital Policlinico, Piazza Giulio Cesare n. 11, 70124, Bari, Italy
| | - Gioacchino Angarano
- Clinic of Infectious Diseases, University of Bari, University Hospital Policlinico, Piazza Giulio Cesare n. 11, 70124, Bari, Italy
| | - Michele Milella
- Clinic of Infectious Diseases, University of Bari, University Hospital Policlinico, Piazza Giulio Cesare n. 11, 70124, Bari, Italy
| | - Annalisa Saracino
- Clinic of Infectious Diseases, University of Bari, University Hospital Policlinico, Piazza Giulio Cesare n. 11, 70124, Bari, Italy
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14
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Malov VA, Ubeeva EA, Ubeeva IP, Nikolaev SM, Umbetova KT. [Treatment of chronic viral hepatitis C with direct acting antiviral agent: review]. TERAPEVT ARKH 2019; 91:86-89. [PMID: 32598617 DOI: 10.26442/00403660.2019.11.000307] [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] [Received: 04/16/2020] [Indexed: 11/22/2022]
Abstract
HCV infection treatment regimens are viewed from positions of HCV life cycle and replication, effects of NS3/4A protease inhibitors and NS5A/NS5B inhibitors on HCV strain replication. Evolution of HCV treatment regimens from its discovery to modern DAA agents had led to substantial progress although drug resistance poses a new issue to be addressed.
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Affiliation(s)
- V A Malov
- Sechenov First Moscow State Medical University
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15
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Hepatitis C Virus Entry into Macrophages/Monocytes Mainly Depends on the Phagocytosis of Macrophages. Dig Dis Sci 2019; 64:1226-1237. [PMID: 30535782 DOI: 10.1007/s10620-018-5401-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 11/27/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Hepatitis C virus (HCV) has been classified as a strictly hepatotropic pathogen for a long time, and hepatocytes are target cells for HCV infection. More and more studies showed non-liver cells supported HCV entry and replication, such as macrophages. The mechanisms of HCV entry into macrophages are still not clear. AIMS This study aims to determine the way of HCV entry into macrophages. METHODS Cell culture-derived infectious HCV particles (HCVcc) were prepared using Huh7 cells transfected with HCV RNA. CD81-knockdown cells were obtained through siRNA transfection. HCV RNA levels were determined by RT-qPCR. Flow cytometry analyses were used to determine cell surface levels of CD11b, CD68, and CD81. ELISA and western blotting were performed to quantify the protein levels of IL-1β, IL-6, and TNF-α. Phagocytic ability was determined by neutral red uptake assay. RESULTS CD81 knockdown could not inhibit HCVcc entry into macrophages. The entry of HCV into macrophages could not be blocked by pooled IgG from chronic hepatitis C patient's sera. Macrophages derived from THP-1 cells displayed stronger phagocytic capacity, which also swallowed more HCV RNA. Treatment of macrophages with endocytic inhibitor, methyl-β-cyclodextrin, decreased the internalization of HCV. HCV uptake by macrophages was related to the reorganization of F-actin cytoskeleton and PI3Ks activation. HCV infection significantly increased the expression of IL1β and IL6 in macrophages and promoted apoptosis of macrophages. CONCLUSIONS HCV entry into macrophages mainly depends on phagocytosis of macrophages.
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16
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Heterogeneity and coexistence of oncogenic mechanisms involved in HCV-associated B-cell lymphomas. Crit Rev Oncol Hematol 2019; 138:156-171. [PMID: 31092372 DOI: 10.1016/j.critrevonc.2019.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 12/15/2022] Open
Abstract
The association of HCV-infection with B-lymphomas is supported by the regression of most indolent/low-grade lymphomas following anti-viral therapy. Studies on direct and indirect oncogenic mechanisms have elucidated the pathogenesis of HCV-associated B-lymphoma subtypes. These include B-lymphocyte proliferation and sustained clonal expansion by HCV-envelope protein stimulation of B-cell receptors, and prolonged HCV-infected B-cell growth by overexpression of an anti-apoptotic BCL-2 oncogene caused by the increased frequency of t(14;18) chromosomal translocations in follicular lymphomas. HCV has been implicated in lymphomagenesis by a "hit-and-run" mechanism, inducing enhanced mutation rate in immunoglobulins and anti-oncogenes favoring immune escape, due to permanent genetic damage by double-strand DNA-breaks. More direct oncogenic mechanisms have been identified in cytokines and chemokines in relation to NS3 and Core expression, particularly in diffuse large B-cell lymphoma. By reviewing genetic alterations and disrupted signaling pathways, we intend to highlight how mutually non-contrasting mechanisms cooperate with environmental factors toward progression of HCV-lymphoma.
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17
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Hart GR, Ferguson AL. Computational design of hepatitis C virus immunogens from host-pathogen dynamics over empirical viral fitness landscapes. Phys Biol 2018; 16:016004. [PMID: 30484433 DOI: 10.1088/1478-3975/aaeec0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hepatitis C virus (HCV) afflicts 170 million people and kills 700 000 annually. Vaccination offers the most realistic and cost effective hope of controlling this epidemic, but despite 25 years of research, no vaccine is available. A major obstacle is HCV's extreme genetic variability and rapid mutational escape from immune pressure. Coupling maximum entropy inference with population dynamics simulations, we have employed a computational approach to translate HCV sequence databases into empirical landscapes of viral fitness and simulate the intrahost evolution of the viral quasispecies over these landscapes. We explicitly model the coupled host-pathogen dynamics by combining agent-based models of viral mutation with stochastically-integrated coupled ordinary differential equations for the host immune response. We validate our model in predicting the mutational evolution of the HCV RNA-dependent RNA polymerase (protein NS5B) within seven individuals for whom longitudinal sequencing data is available. We then use our approach to perform exhaustive in silico evaluation of putative immunogen candidates to rationally design tailored vaccines to simultaneously cripple viral fitness and block mutational escape within two selected individuals. By systematically identifying a small number of promising vaccine candidates, our empirical fitness landscapes and host-pathogen dynamics simulator can guide and accelerate experimental vaccine design efforts.
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Affiliation(s)
- Gregory R Hart
- Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL 61801, United States of America. Present address: Department of Therapeutic Radiology, Yale University, 202 LLCI, 15 York Street, New Haven, CT 96510, United States of America
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18
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Nafari M, Irani S, Vaziri F, Gharibzadeh S, Sakhaee F, Khazeni M, Kalhor N, Jamnani FR, Siadat SD, Fateh A. Correlation of CD81 and SCARB1 polymorphisms on virological responses in Iranian patients with chronic hepatitis C virus genotype 1. INFECTION GENETICS AND EVOLUTION 2018; 62:296-303. [PMID: 29715527 DOI: 10.1016/j.meegid.2018.04.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 04/23/2018] [Accepted: 04/27/2018] [Indexed: 12/11/2022]
Abstract
The cluster of differentiation 81 (CD81) and scavenger receptor class B member 1 (SCARB1) plays an important role in the entry of hepatitis C virus (HCV). We assessed the correlation of five single nucleotide polymorphisms (SNPs) of CD81 (rs800136, rs2651842, rs2522012, rs800146, and rs708564) and SCARB1 rs10846744 polymorphisms with treatment responses in 395 treatment-naïve patients with chronic HCV (CHC) genotype 1 treated with pegylated interferon-α and ribavirin (pegIFN-α/RBV). The frequency of rapid virologic response (RVR), complete early virologic response (cEVR) and sustained virologic response (SVR) were 57.2%, 55.2%, and 58.2%, respectively. RVR, cEVR, and SVR were significantly associated with CD81 rs800136 (CC), CD81 rs2651842 (AA), CD81 rs708564 (TT), and SCARB1 rs10846744 (CC). High rates of RVR, cEVR, and SVR were reported for the CD81 rs800136 (CC), CD81 rs2651842 (AA), and CD81 rs708564 (TT) genotypes when correlated with higher levels of low-density lipoprotein (LDL) and lower levels of high-density lipoprotein (HDL) as well as lower levels of HDL and LDL in the SCARB1 rs10846744 (CC) genotype. In addition, patients with GG genotype had higher fasting blood glucose (FBS) level than those with CC genotype. In conclusion, CD81 and SCARB1 SNPs may serve as powerful predictor factors for treatment responses in CHC patients, and this effect is correlated with serum lipoprotein and FBS levels.
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Affiliation(s)
- Milad Nafari
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Shiva Irani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Farzam Vaziri
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran; Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Safoora Gharibzadeh
- Research Centre for Emerging and Reemerging infectious diseases, Pasteur Institute of Iran, Tehran, Iran; Department of Epidemiology and Biostatistics, Pasteur Institute of Iran, Tehran, Iran
| | - Fatemeh Sakhaee
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Khazeni
- Department of Virology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Naser Kalhor
- Stem Cell Laboratory, The Academic Center for Education, Culture and Research (ACECR), Qom Branch, Qom, Iran
| | - Fatemeh Rahimi Jamnani
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran; Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Seyed Davar Siadat
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran; Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran
| | - Abolfazl Fateh
- Department of Mycobacteriology and Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran; Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, Iran.
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19
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Deecke L, Dobrovolny HM. Intermittent treatment of severe influenza. J Theor Biol 2018; 442:129-138. [PMID: 29355540 DOI: 10.1016/j.jtbi.2018.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 12/30/2017] [Accepted: 01/15/2018] [Indexed: 12/17/2022]
Abstract
Severe, long-lasting influenza infections are often caused by new strains of the virus. The long duration of these infections leads to an increased opportunity for the emergence of drug resistant mutants. This is particularly problematic since for new strains there is often no vaccine, so drug treatment is the first line of defense. One strategy for trying to minimize drug resistance is to apply drugs periodically. During treatment phases the wild-type virus decreases, but resistant virus might increase; when there is no treatment, wild-type virus will hopefully out-compete the resistant virus, driving down the number of resistant virus. A stochastic model of severe influenza is combined with a model of drug resistance to simulate long-lasting infections and intermittent treatment with two types of antivirals: neuraminidase inhibitors, which block release of virions; and adamantanes, which block replication of virions. Each drug's ability to reduce emergence of drug resistant mutants is investigated. We find that cell regeneration is required for successful implementation of intermittent treatment and that the optimal cycling parameters change with regeneration rate.
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Affiliation(s)
- Lucas Deecke
- Institut für Theoretische Physik, Universität zu Köln, Cologne, Germany
| | - Hana M Dobrovolny
- Department of Physics & Astronomy, Texas Christian University, Fort Worth, TX, USA.
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20
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Willis SJ, Cole SR, Westreich D, Edmonds A, Hurt CB, Albrecht S, Anastos K, Augenbraun M, Fischl M, French AL, Kalapila AG, Karim R, Peters MG, Plankey M, Seaberg EC, Tien PC, Adimora AA. Chronic hepatitis C virus infection and subsequent HIV viral load among women with HIV initiating antiretroviral therapy. AIDS 2018; 32:653-661. [PMID: 29334550 PMCID: PMC6024258 DOI: 10.1097/qad.0000000000001745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVES One in four persons living with HIV is coinfected with hepatitis C virus (HCV). Biological and behavioral mechanisms may increase HIV viral load among coinfected persons. Therefore, we estimated the longitudinal effect of chronic HCV on HIV suppression after ART initiation among women with HIV (WWH). DESIGN HIV RNA was measured every 6 months among 441 WWH in the Women's Interagency HIV Study who initiated ART from 2000 to 2015. METHODS Log-binomial regression models were used to compare the proportion of study visits with detectable HIV RNA between women with and without chronic HCV. Robust sandwich variance estimators accounted for within-person correlation induced by repeated HIV RNA measurements during follow-up. We controlled for confounding and selection bias (because of loss to follow-up and death) using inverse probability-of-exposure-and-censoring weights. RESULTS One hundred and fourteen women (25%) had chronic HCV before ART initiation. Overall, the proportion of visits with detectable HIV RNA was similar among women with and without chronic HCV [relative risk (RR) 1.19 (95% CI 0.72, 1.95)]. Six months after ART initiation, the proportion of visits with detectable HIV RNA among women with chronic HCV was 1.88 (95% CI 1.41-2.51) times that among women without HCV, at 2 years, the ratio was 1.60 (95% CI 1.17-2.19), and by 6 years there was no difference (1.03; 95% CI 0.60-1.79). CONCLUSION Chronic HCV may negatively impact early HIV viral response to ART. These findings reaffirm the need to test persons with HIV for HCV infection, and increase engagement in HIV care and access to HCV treatment among persons with HIV/HCV coinfection.
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Affiliation(s)
- Sarah J Willis
- Department of Epidemiology, Gillings School of Global Public Health
| | - Stephen R Cole
- Department of Epidemiology, Gillings School of Global Public Health
| | - Daniel Westreich
- Department of Epidemiology, Gillings School of Global Public Health
| | - Andrew Edmonds
- Department of Epidemiology, Gillings School of Global Public Health
| | - Christopher B Hurt
- Institute for Global Health & Infectious Diseases, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Svenja Albrecht
- Division of Infectious Diseases, University of Mississippi Medical Center, Jackson, Mississippi
| | - Kathryn Anastos
- Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx
| | - Michael Augenbraun
- Department of Medicine, SUNY Downstate Medical Center, Brooklyn, New York
| | - Margaret Fischl
- Miller School of Medicine, University of Miami, Miami, Florida
| | - Audrey L French
- Division of Infectious Diseases, Stroger Hospital of Cook County, Chicago, Illinois
| | - Aley G Kalapila
- Division of Infectious Diseases, School of Medicine, Emory University, Atlanta, Georgia
| | - Roksana Karim
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles
| | - Marion G Peters
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Michael Plankey
- Department of Medicine, Division of Infectious Diseases, Georgetown University Medical Center, Washington, DC
| | - Eric C Seaberg
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Phyllis C Tien
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Adaora A Adimora
- Department of Epidemiology, Gillings School of Global Public Health
- Institute for Global Health & Infectious Diseases, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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21
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Baek K, Choi Y. The microbiology of oral lichen planus: Is microbial infection the cause of oral lichen planus? Mol Oral Microbiol 2017; 33:22-28. [PMID: 28869787 DOI: 10.1111/omi.12197] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2017] [Indexed: 12/15/2022]
Abstract
Oral lichen planus (OLP) is a variant of lichen planus (LP), a common chronic mucocutaneous inflammatory disease. Cutaneous lesions of LP are self-limiting, but OLP lesions are non-remissive, alternating periods of exacerbation and quiescence, and only symptomatic treatments exist for OLP. The precise etiology and pathogenesis of OLP are hardly understood, which is a major obstacle to the development of new therapeutics for this disease. OLP is considered a T-cell-mediated inflammatory disease. Although various antigens have been considered, what actually triggers the inflammatory response of T cells is unknown. Suggested predisposing factors include genetic factors, stress, trauma, and infection. The aim of this review was to determine whether microbial infection can cause OLP. We first reviewed the association between OLP and microbial factors, including viral, fungal, and bacterial infections. In addition, each microbial factor associated with OLP was assessed by modified guidelines of Fredricks and Relman to determine whether it establishes a causal relationship. In conclusion, no microbial factor yet fulfills the guidelines to establish the causality of OLP. By focusing on the unclarified issues, however, the potential roles of microbial factors in the pathogenesis of OLP will be soon elucidated.
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Affiliation(s)
- K Baek
- Department of Immunology and Molecular Microbiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Y Choi
- Department of Immunology and Molecular Microbiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
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22
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Monocyte chemoattractant protein 1 released from macrophages induced by hepatitis C virus promotes monocytes migration. Virus Res 2017; 240:190-196. [PMID: 28860098 DOI: 10.1016/j.virusres.2017.08.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/27/2017] [Accepted: 08/27/2017] [Indexed: 12/12/2022]
Abstract
Hepatitis C Virus (HCV) infection usually progress to chronic liver disease and shows a significant increase in total monocyte/macrophages numbers in the liver. Monocyte chemoattractant protein-1 (MCP-1) plays a role in the recruitment of monocytes to the liver. In this study we found that MCP-1 were up-regulated in macrophages cultured with cell-culture derived infectious HCV particles (HCVcc) and promoted the migration of monocytes. IL1β, IL6 and TNFα were factors that induced MCP-1 expression, which were up-regulated in macrophages induced by HCV. Long-term of HCV incubation induced apoptosis of macrophages. Finally, we observed the effect of HCV infected macrophages on nearby liver cells. Huh7 cells continuously co-cultured with monocyte/macrophages displayed increased expression of pro-inflammatory cytokines and the morphology of Huh7 cells were greatly changed. Taken together, our study provides more information for the role of monocyte/macrophages in HCV related chronic liver disease.
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23
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Adinolfi LE, Nevola R, Rinaldi L, Romano C, Giordano M. Chronic Hepatitis C Virus Infection and Depression. Clin Liver Dis 2017; 21:517-534. [PMID: 28689590 DOI: 10.1016/j.cld.2017.03.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepatitis C virus (HCV) infection is a systemic disease with hepatic and extrahepatic manifestations, including neuropsychiatric conditions. Depression is a frequent disorder, which has been reported in one-third of patients with HCV infection and has an estimated prevalence of 1.5 to 4.0 times higher than that observed in patients with chronic hepatitis B virus infection or the general population. HCV seems to play a direct and indirect role in the development of depression. Impaired quality of life and increasing health care costs have been reported for patients with HCV infection with depression. Treatment-induced HCV clearance has been associated with improvement of depression and quality of life.
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Affiliation(s)
- Luigi Elio Adinolfi
- Department of Medicine, Surgery, Neurology, Metabolism, and Aging Sciences, University of Study of Campania "Luigi Vanvitelli", Piazza Miraglia, Naples 80100, Italy.
| | - Riccardo Nevola
- Department of Medicine, Surgery, Neurology, Metabolism, and Aging Sciences, University of Study of Campania "Luigi Vanvitelli", Piazza Miraglia, Naples 80100, Italy
| | - Luca Rinaldi
- Department of Medicine, Surgery, Neurology, Metabolism, and Aging Sciences, University of Study of Campania "Luigi Vanvitelli", Piazza Miraglia, Naples 80100, Italy
| | - Ciro Romano
- Department of Medicine, Surgery, Neurology, Metabolism, and Aging Sciences, University of Study of Campania "Luigi Vanvitelli", Piazza Miraglia, Naples 80100, Italy
| | - Mauro Giordano
- Department of Medicine, Surgery, Neurology, Metabolism, and Aging Sciences, University of Study of Campania "Luigi Vanvitelli", Piazza Miraglia, Naples 80100, Italy
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24
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Alhetheel A, Albarrag A, Shakoor Z, Alswat K, Abdo A, Al-Hamoudi W, Alomar S. Increased Spontaneous Programmed Cell Death Is Associated with Impaired Cytokine Secretion in Peripheral Blood Mononuclear Cells from Hepatitis C Virus-Positive Patients. Viral Immunol 2017; 30:283-287. [PMID: 28304236 DOI: 10.1089/vim.2016.0166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Peripheral blood mononuclear cells (PBMCs) play a critical role in clearing hepatitis C virus (HCV). PBMC defects have been linked with HCV infection; however, the underlying mechanisms remain obscure. We hypothesized that PBMCs of HCV-infected patients are more susceptible to programmed cell death (PCD), and are therefore unable to clear HCV. We compared spontaneous PBMC PCD and cytokine [interleukin (IL)-1, -6, -8, -10, and -12] secretion between untreated (naive) HCV+ and treated [sustained responder (SR)] patients with HCV, and HCV- healthy controls. Spontaneous PBMC PCD was assessed by annexin-V fluorescein isothiocyanate/propidium iodide staining, and cytokine levels were measured by cytometric bead array. Differences between groups were analyzed through paired and nonpaired t tests and Mann-Whitney U test. The rate of spontaneous PCD was higher in PBMCs of naive HCV+ patients (p < 0.0001) and SR-HCV patients (p < 0.002) than in HCV- controls. Significantly low levels of IL-8, -6, and -10 were detected in the supernatant of cell cultures of PBMCs from naive HCV+ (p < 0.05) and SR-HCV (p < 0.05) patients relative to HCV- controls. There was no difference between the naive HCV+ and SR-HCV groups in terms of PBMC PCD rate or cytokine levels. The present findings indicate that HCV infection is associated with increased PBMC susceptibility to PCD and decreased production of IL-8, -6, and -10.
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Affiliation(s)
- Abdulkarim Alhetheel
- 1 King Khalid University Hospital , Riyadh, Saudi Arabia .,2 Department of Pathology, College of Medicine, King Saud University , Riyadh, Saudi Arabia
| | - Ahmed Albarrag
- 1 King Khalid University Hospital , Riyadh, Saudi Arabia .,2 Department of Pathology, College of Medicine, King Saud University , Riyadh, Saudi Arabia
| | - Zahid Shakoor
- 1 King Khalid University Hospital , Riyadh, Saudi Arabia .,2 Department of Pathology, College of Medicine, King Saud University , Riyadh, Saudi Arabia
| | - Khalid Alswat
- 1 King Khalid University Hospital , Riyadh, Saudi Arabia .,3 Department of Medicine, College of Medicine, King Saud University , Riyadh, Saudi Arabia
| | - Ayman Abdo
- 1 King Khalid University Hospital , Riyadh, Saudi Arabia .,3 Department of Medicine, College of Medicine, King Saud University , Riyadh, Saudi Arabia
| | - Waleed Al-Hamoudi
- 1 King Khalid University Hospital , Riyadh, Saudi Arabia .,3 Department of Medicine, College of Medicine, King Saud University , Riyadh, Saudi Arabia
| | - Suliman Alomar
- 4 Department of Zoology, College of Sciences, King Saud University , Riyadh, Saudi Arabia
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25
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Seronegative and occult hepatitis C virus infections in patients with hematological disorders. Arch Virol 2016; 162:63-69. [PMID: 27665588 DOI: 10.1007/s00705-016-3049-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 09/03/2016] [Indexed: 12/20/2022]
Abstract
Studies of the association between seronegative or occult (OCI) hepatitis C virus (HCV) infection, and hematological disorders have yielded controversial results. The aim of this study was to investigate seronegative and OCI HCV infections in among patients with different hematological disorders. This study included 90 anti-HCV-negative patients with either benign or malignant hematological disorders (group I), along with 20 age- and sex-matched apparently healthy subjects, who served as controls (group II). We tested for HCV RNA in sera and PBMCs by RT-nested PCR and for liver enzyme activity. Seronegativity and OCI were detected in 66.7 % and 20 % respectively, of the studied cases (group I). OCI was more evident in Hodgkin lymphoma and thalassemia. A significant increase in AST activity was observed in the seronegative and OCI groups and in ALT and AST in HCV-seronegative or OCI and negative HCV patients (p ≤ 0.05). Seronegativity and OCI are a significant clinical problem in patients with hematological disorders, warranting wider use of molecular tests combined with periodic evaluations of liver functions for diagnostic purposes.
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26
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Hetta HF, Mekky MA, Khalil NK, Mohamed WA, El-Feky MA, Ahmed SH, Daef EA, Medhat A, Nassar MI, Sherman KE, Shata MTM. Extra-hepatic infection of hepatitis C virus in the colon tissue and its relationship with hepatitis C virus pathogenesis. J Med Microbiol 2016; 65:703-712. [PMID: 27166142 DOI: 10.1099/jmm.0.000272] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Extra-hepatic compartments might contribute to hepatitis C virus (HCV) persistence and extra-hepatic manifestations. Therefore, we investigated HCV infection in colonic tissue in patients with chronic hepatitis C (CHC) and its relationship with HCV pathogenesis. Colonic biopsies were collected from three groups with CHC infection: treatment naïve (TN; n=12), non-responders (NR; n=10) to anti-HCV therapy (pegylated interferon-α and ribavirin) and sustained virologic response (SVR; n=10) and from a fourth healthy control group (n=10). Liver biopsies were examined to assess inflammation and fibrosis. HCV infection and colonic T regulatory (Treg) frequency were detected by immunohistochemistry. HCV core and NS3 proteins were detected in B cells and macrophage/monocytes of 42 % and 25 % of TN and 50 % and 30 % of NR, respectively, but not in SVR or control group. The numbers of cells expressing HCV proteins were positively correlated with both HCV viral load and colonic Treg frequency. A significant negative correlation between HCV-expressing cells with both liver inflammation and fibrosis was identified. Our study provides evidence that HCV can infect B cells and macrophages of the colon. The correlations between HCV infection in colonic tissue and HCV viral load and liver pathology underline the significance of this extra-hepatic infection in HCV pathogenesis and response to therapy.
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Affiliation(s)
- Helal F Hetta
- Department of Internal Medicine, Division of Digestive Diseases, University of Cincinnati, Cincinnati, OH, USA
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohamed A Mekky
- Department of Gastroenterology & Tropical Medicine, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Nasr K Khalil
- Assiut Liver Institute for Treatment of Hepatitis C, Assiut, Egypt
| | - Wegdan A Mohamed
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohamed A El-Feky
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Shabaan H Ahmed
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Enas A Daef
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed Medhat
- Department of Gastroenterology & Tropical Medicine, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mahmoud I Nassar
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Kenneth E Sherman
- Department of Internal Medicine, Division of Digestive Diseases, University of Cincinnati, Cincinnati, OH, USA
| | - Mohamed Tarek M Shata
- Department of Internal Medicine, Division of Digestive Diseases, University of Cincinnati, Cincinnati, OH, USA
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Mathew S, Faheem M, Ibrahim SM, Iqbal W, Rauff B, Fatima K, Qadri I. Hepatitis C virus and neurological damage. World J Hepatol 2016; 8:545-556. [PMID: 27134702 PMCID: PMC4840160 DOI: 10.4254/wjh.v8.i12.545] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/16/2015] [Accepted: 04/11/2016] [Indexed: 02/06/2023] Open
Abstract
Chronic hepatitis C virus (HCV) infection exhibits a wide range of extrahepatic complications, affecting various organs in the human body. Numerous HCV patients suffer neurological manifestations, ranging from cognitive impairment to peripheral neuropathy. Overexpression of the host immune response leads to the production of immune complexes, cryoglobulins, as well as autoantibodies, which is a major pathogenic mechanism responsible for nervous system dysfunction. Alternatively circulating inflammatory cytokines and chemokines and HCV replication in neurons is another factor that severely affects the nervous system. Furthermore, HCV infection causes both sensory and motor peripheral neuropathy in the mixed cryoglobulinemia as well as known as an important risk aspect for stroke. These extrahepatic manifestations are the reason behind underlying hepatic encephalopathy and chronic liver disease. The brain is an apt location for HCV replication, where the HCV virus may directly wield neurotoxicity. Other mechanisms that takes place by chronic HCV infection due the pathogenesis of neuropsychiatric disorders includes derangement of metabolic pathways of infected cells, autoimmune disorders, systemic or cerebral inflammation and alterations in neurotransmitter circuits. HCV and its pathogenic role is suggested by enhancement of psychiatric and neurological symptoms in patients attaining a sustained virologic response followed by treatment with interferon; however, further studies are required to fully assess the impact of HCV infection and its specific antiviral targets associated with neuropsychiatric disorders.
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Ramanan V, Trehan K, Ong ML, Luna JM, Hoffmann HH, Espiritu C, Sheahan TP, Chandrasekar H, Schwartz RE, Christine KS, Rice CM, van Oudenaarden A, Bhatia SN. Viral genome imaging of hepatitis C virus to probe heterogeneous viral infection and responses to antiviral therapies. Virology 2016; 494:236-47. [PMID: 27128351 DOI: 10.1016/j.virol.2016.04.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/13/2016] [Accepted: 04/15/2016] [Indexed: 12/12/2022]
Abstract
Hepatitis C virus (HCV) is a positive single-stranded RNA virus of enormous global health importance, with direct-acting antiviral therapies replacing an immunostimulatory interferon-based regimen. The dynamics of HCV positive and negative-strand viral RNAs (vRNAs) under antiviral perturbations have not been studied at the single-cell level, leaving a gap in our understanding of antiviral kinetics and host-virus interactions. Here, we demonstrate quantitative imaging of HCV genomes in multiple infection models, and multiplexing of positive and negative strand vRNAs and host antiviral RNAs. We capture the varying kinetics with which antiviral drugs with different mechanisms of action clear HCV infection, finding the NS5A inhibitor daclatasvir to induce a rapid decline in negative-strand viral RNAs. We also find that the induction of host antiviral genes upon interferon treatment is positively correlated with viral load in single cells. This study adds smFISH to the toolbox available for analyzing the treatment of RNA virus infections.
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Affiliation(s)
- Vyas Ramanan
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kartik Trehan
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mei-Lyn Ong
- Computational and Systems Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Joseph M Luna
- Center for the Study of Hepatitis C, Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, 10065 NY, USA
| | - Hans-Heinrich Hoffmann
- Center for the Study of Hepatitis C, Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, 10065 NY, USA
| | - Christine Espiritu
- Center for the Study of Hepatitis C, Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, 10065 NY, USA
| | - Timothy P Sheahan
- Center for the Study of Hepatitis C, Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, 10065 NY, USA
| | - Hamsika Chandrasekar
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert E Schwartz
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kathleen S Christine
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Charles M Rice
- Center for the Study of Hepatitis C, Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, 10065 NY, USA
| | - Alexander van Oudenaarden
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences, and University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Sangeeta N Bhatia
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Division of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA; Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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29
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Kralj D, Jukić LV, Stojsavljević S, Duvnjak M, Smolić M, Čurčić IB. Hepatitis C Virus, Insulin Resistance, and Steatosis. J Clin Transl Hepatol 2016; 4:66-75. [PMID: 27047774 PMCID: PMC4807145 DOI: 10.14218/jcth.2015.00051] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 02/15/2016] [Accepted: 02/16/2016] [Indexed: 12/15/2022] Open
Abstract
Hepatitis C virus (HCV) is one of the main causes of liver disease worldwide. Liver steatosis is a common finding in many hepatic and extrahepatic disorders, the most common being metabolic syndrome (MS). Over time, it has been shown that the frequent coexistence of these two conditions is not coincidental, since many epidemiological, clinical, and experimental studies have indicated HCV to be strongly associated with liver steatosis and numerous metabolic derangements. Here, we present an overview of publications that provide clinical evidence of the metabolic effects of HCV and summarize the available data on the pathogenetic mechanisms of this association. It has been shown that HCV infection can induce insulin resistance (IR) in the liver and peripheral tissues through multiple mechanisms. Substantial research has suggested that HCV interferes with insulin signaling both directly and indirectly, inducing the production of several proinflammatory cytokines. HCV replication, assembly, and release from hepatocytes require close interactions with lipid droplets and host lipoproteins. This modulation of lipid metabolism in host cells can induce hepatic steatosis, which is more pronounced in patients with HCV genotype 3. The risk of steatosis depends on several viral factors (including genotype, viral load, and gene mutations) and host features (visceral obesity, type 2 diabetes mellitus, genetic predisposition, medication use, and alcohol consumption). HCV-related IR and steatosis have been shown to have a remarkable clinical impact on the prognosis of HCV infection and quality of life, due to their association with resistance to antiviral therapy, progression of hepatic fibrosis, and development of hepatocellular carcinoma. Finally, HCV-induced IR, oxidative stress, and changes in lipid and iron metabolism lead to glucose intolerance, arterial hypertension, hyperuricemia, and atherosclerosis, resulting in increased cardiovascular mortality.
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Affiliation(s)
- Dominik Kralj
- Department of Gastroenterology and Hepatology, Sisters of Charity University Hospital Center, Zagreb, Croatia
| | - Lucija Virović Jukić
- Department of Gastroenterology and Hepatology, Sisters of Charity University Hospital Center, Zagreb, Croatia
- Correspondence to: Lucija Virović Jukić, Department of Gastroenterology and Hepatology, Sestre milosrdnice University Hospital Center, Vinogradska cesta 29, 10000 Zagreb, Croatia. Tel: +385-1-3787-178, Fax: +385-1-3769-067, E-mail:
| | - Sanja Stojsavljević
- Department of Gastroenterology and Hepatology, Sisters of Charity University Hospital Center, Zagreb, Croatia
| | - Marko Duvnjak
- Department of Gastroenterology and Hepatology, Sisters of Charity University Hospital Center, Zagreb, Croatia
| | - Martina Smolić
- Department of Pharmacology, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Ines Bilić Čurčić
- Department of Pharmacology, Faculty of Medicine, University of Osijek, Department of Endocrinology and metabolism disorders, University Hospital Center, Osijek, Osijek, Croatia
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30
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Nadeem AED, Thomas P, Ulf ML, Elena N, Anggakusuma A, Mohamed BM, Frank P, Patrick B. Cell culture-derived HCV cannot infect synovial fibroblasts. Sci Rep 2015; 5:18043. [PMID: 26643193 PMCID: PMC4672287 DOI: 10.1038/srep18043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 11/11/2015] [Indexed: 12/02/2022] Open
Abstract
Worldwide 170 million individuals are infected with hepatitis C virus (HCV), up to 45 million of whom are affected by arthropathy. It is unclear whether this is due to viral infection of synovial cells or immune-mediated mechanisms. We tested the capacity of primary synovial fibroblasts to support HCV propagation. Out of the four critical HCV receptors, only CD81 was expressed to any significant extent in OASF and RASF. Consistent with this, pseudotyped HCV particles were unable to infect these cells. Permissiveness for HCV replication was investigated by transfecting cells with a subgenomic replicon of HCV encoding a luciferase reporter. OASF and RASF did not support replication of HCV, possibly due to low expression levels of miR-122. In conclusion, primary human synovial fibroblasts are unable to support propagation of HCV in vitro. HCV-related arthropathy is unlikely due to direct infection of these cells.
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Affiliation(s)
- Abd-Elshafy D Nadeem
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute for Experimental Infection Research, Hannover, Germany.,Water Pollution Research Department, Environmental Sciences Research Division, National research center, Cairo, Egypt
| | - Pietschmann Thomas
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute of Experimental Virology, Hannover, Germany.,German Centre for Infection Research, Hannover, Germany
| | - Müller-Ladner Ulf
- Department of Internal Medicine and Rheumatology, Justus-Liebig University of Giessen, Rheumatology and Clinical Immunology, Kerckhoff Klinik, GmbH, Bad Nauheim, Germany
| | - Neumann Elena
- Department of Internal Medicine and Rheumatology, Justus-Liebig University of Giessen, Rheumatology and Clinical Immunology, Kerckhoff Klinik, GmbH, Bad Nauheim, Germany
| | - A Anggakusuma
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute of Experimental Virology, Hannover, Germany
| | - Bahgat M Mohamed
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute for Experimental Infection Research, Hannover, Germany.,Therapeutic Chemistry Department, Pharmaceutical Industries Research Division, National research center, Cairo, Egypt.,Immunology and lnfectious Diseases Laboratory, Therapeutic Chemistry Department, the National Research Centre, Cairo, Egypt
| | - Pessler Frank
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute for Experimental Infection Research, Hannover, Germany.,Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany
| | - Behrendt Patrick
- TWINCORE, Center for Experimental and Clinical Infection Research, Institute of Experimental Virology, Hannover, Germany.,German Centre for Infection Research, Hannover, Germany.,Department for Gastroenterology, Hepatology and Endocrinology, Medical School Hannover, Hannover, Germany
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31
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Stefas I, Tigrett S, Dubois G, Kaiser M, Lucarz E, Gobby D, Bray D, Ellerbrok H, Zarski JP, Veas F. Interactions between Hepatitis C Virus and the Human Apolipoprotein H Acute Phase Protein: A Tool for a Sensitive Detection of the Virus. PLoS One 2015; 10:e0140900. [PMID: 26502286 PMCID: PMC4621047 DOI: 10.1371/journal.pone.0140900] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 10/01/2015] [Indexed: 12/20/2022] Open
Abstract
The Hepatitis C virus (HCV) infection exhibits a high global prevalence frequently associated with hepatocellular carcinoma, taking years to develop. Despite the standardization of highly sensitive HCV quantitative RT-PCR (qRT-PCR) detection methods, false-negative diagnoses may be generated with current methods, mainly due to the presence of PCR inhibitors and/or low viral loads in the patient’s sample. These false-negative diagnoses impact both public health systems, in developing countries, and an in lesser extent, in developed countries, including both the risk of virus transmission during organ transplantation and/or blood transfusion and the quality of the antiviral treatment monitoring. To adopt an appropriate therapeutic strategy to improve the patient’s prognosis, it is urgent to increase the HCV detection sensitivity. Based upon previous studies on HBV, we worked on the capacity of the scavenger acute phase protein, Apolipoprotein H (ApoH) to interact with HCV. Using different approaches, including immunoassays, antibody-inhibition, oxidation, ultracentrifugation, electron microscopy and RT-PCR analyses, we demonstrated specific interactions between HCV particles and ApoH. Moreover, when using a two-step HCV detection process, including capture of HCV by ApoH-coated nanomagnetic beads and a home-made real-time HCV-RT-PCR, we confirmed the presence of HCV for all samples from a clinical collection of HCV-seropositive patients exhibiting an RT-PCR COBAS® TaqMan® HCV Test, v2.0 (COBAS)-positive result. In contrast, for HCV-seropositive patients with either low HCV-load as determined with COBAS or exhibiting HCV-negative COBAS results, the addition of the two-step ApoH-HCV-capture and HCV-detection process was able to increase the sensitivity of HCV detection or more interestingly, detect in a genotype sequence-independent manner, a high-proportion (44%) of HCV/RNA-positive among the COBAS HCV-negative patients. Thus, the immune interaction between ApoH and HCV could be used as a sample preparation tool to enrich and/or cleanse HCV patient’s samples to enhance the detection sensitivity of HCV and therefore significantly reduce the numbers of false-negative HCV diagnosis results.
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Affiliation(s)
- Ilias Stefas
- ApoH-Technologies, Faculté de Pharmacie, Université de Montpellier, Montpellier, France
| | - Sylvia Tigrett
- ApoH-Technologies, Faculté de Pharmacie, Université de Montpellier, Montpellier, France; Institut de Recherche pour le Développement, UMR-Ministère de la Défense 3, Laboratoire d'Immuno-Physiopathologie Moléculaire Comparée, Faculté de Pharmacie, Montpellier, France
| | - Grégor Dubois
- Institut de Recherche pour le Développement, UMR-Ministère de la Défense 3, Laboratoire d'Immuno-Physiopathologie Moléculaire Comparée, Faculté de Pharmacie, Montpellier, France
| | | | - Estelle Lucarz
- ApoH-Technologies, Faculté de Pharmacie, Université de Montpellier, Montpellier, France
| | - Delphine Gobby
- ApoH-Technologies, Faculté de Pharmacie, Université de Montpellier, Montpellier, France
| | - Dorothy Bray
- Immunoclin Corporation, Washington, DC, United States of America
| | - Heinz Ellerbrok
- Robert Koch-Institute, Centre for Biological Threats and Special Pathogens, Highly Pathogenic Viruses, Berlin, Germany
| | - Jean Pierre Zarski
- Clinique d'Hépato-gastroentérologie, Centre Hospitalier Universitaire de Grenoble, IAB, INSERM U823, Grenoble, France
| | - Francisco Veas
- Institut de Recherche pour le Développement, UMR-Ministère de la Défense 3, Laboratoire d'Immuno-Physiopathologie Moléculaire Comparée, Faculté de Pharmacie, Montpellier, France
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32
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Ocular surface and tear parameters in patients with chronic hepatitis C at initial stages of hepatic fibrosis. Eye Contact Lens 2015; 41:117-20. [PMID: 25503914 DOI: 10.1097/icl.0000000000000079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of this study was to evaluate changes in ocular surface and tear function parameters in chronic hepatitis C at initial stages of hepatic fibrosis. METHODS Thirty-one patients with biopsy-proven chronic hepatitis C and 31 age- and sex-matched healthy control subjects without systemic hepatitis C infection were examined with the Ocular Surface Disease Index (OSDI) questionnaire, Schirmer I, tear film break-up time, and scoring of ocular surface fluorescein and Rose Bengal staining using modified Oxford and van Bijsterveld scoring systems, respectively. RESULTS All ocular surface parameters, except OSDI and corneal staining scores, were significantly worse in hepatitis C group. The control group had greater OSDI scores than the hepatitis C group, but there was no statistically important difference. In subgroup analysis, progression of hepatic fibrosis was found to be correlated strongly with decreased Schirmer test I, increased OSDI, lid parallel conjunctival folds, conjunctival, and corneal staining scores. CONCLUSION Patients with chronic hepatitis C were more likely to exhibit severe ocular surface damage and signs of dry eye.
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Schulz S, Landi A, Garg R, Wilson JA, van Drunen Littel-van den Hurk S. Indolamine 2,3-dioxygenase expression by monocytes and dendritic cell populations in hepatitis C patients. Clin Exp Immunol 2015; 180:484-98. [PMID: 25605587 DOI: 10.1111/cei.12586] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 12/31/2014] [Accepted: 01/09/2015] [Indexed: 12/24/2022] Open
Abstract
Dendritic cells (DCs) play an important role in the induction of the primary immune response to infection. DCs may express the tryptophan-catabolizing enzyme indolamine2,3-dioxygenase (IDO), which is an inducer of immune tolerance. Because there is evidence that chronic hepatitis C virus (HCV) infection leads to functional impairment of certain DC populations, we analysed IDO expression in DCs and monocytes from chronically infected and recovered HCV patients. The IDO1 and -2 expression was increased significantly in the monocytes of chronic HCV patients but, interestingly, not in those from recovered patients. The myeloid DCs from chronically infected HCV patients also showed enhanced IDO1 expression, while no change in either IDO1 or -2 was found for plasmacytoid DCs. Up-regulation of IDO1 gene expression was confirmed by the presence of enhanced kynurenine/tryptophan ratios in the plasma from chronic HCV patients. Increased IDO1 and -2 expression was also observed in monocytes from healthy donors infected with an adapted mutant of the HCV JFH-1 strain ex vivo, confirming a direct effect of HCV infection. These changes in IDO expression could be prevented by treatment with the IDO inhibitor 1-methyl tryptophan (1-mT). Furthermore, maturation of monocyte-derived DCs from chronically infected HCV patients, as well as well as monocyte-derived DCs infected ex vivo with HCV, was impaired, but this was reversed by 1-mT treatment. This suggests that IDO inhibitors may be used to treat chronic HCV patients in vivo, in conjunction with current therapies, or to activate DCs from patients ex vivo, such that they can be administered back as a DC-based therapeutic vaccine.
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Affiliation(s)
- S Schulz
- VIDO-InterVac, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - A Landi
- Li Ka Shing Institute of Virology, Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
| | - R Garg
- VIDO-InterVac, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J A Wilson
- Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - S van Drunen Littel-van den Hurk
- VIDO-InterVac, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.,Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Sun S, Jin G, Kang H. CD81 and CLDN1 polymorphisms and hepatitis C virus infection susceptibility: a case control study. Gene 2015; 567:87-91. [PMID: 25934191 DOI: 10.1016/j.gene.2015.04.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 04/22/2015] [Accepted: 04/25/2015] [Indexed: 12/12/2022]
Abstract
CD81 and CLDN1 interact to form a CD81-CLDN1 co-receptor complex that is crucial in hepatitis C virus (HCV) entry. Variations in the two genes were shown to influence immunological functions; therefore, we hypothesized that polymorphisms in these genes may contribute to HCV susceptibility. A case-control study consisting of 461 patients and 461 controls was conducted to explore the associations between CD81 rs708564 and CLDN1 rs893051 and HCV susceptibility in a Chinese population. We found a decreased HCV risk associated with the CD81 rs708564 TT (odds ratio (OR) = 0.66, 95% CI = 0.44-0.98) genotype. The gene-gene interaction between CD81 and CLDN1 polymorphisms also decreased HCV risk in a joint multiplicative manner (OR for the presence of both CD81 rs708564 TT and CLDN1 rs893051 GG genotypes = 0.59, 95% CI = 0.36-0.97). Furthermore, the CD81 rs708564 TT genotype conferred a more pronounced decrease in HCV susceptibility in combination with lower levels of high-density lipoprotein cholesterol (HDL-C; OR = 0.71, 95% CI = 0.52-0.96), and higher levels of low-density lipoprotein cholesterol (OR = 0.24, 95% CI = 0.09-0.65). We also observed a decreased HCV susceptibility in individuals with higher HDL-C levels who carried the CLDN1 rs893051 G/C genotype. These findings suggest that homozygous CD81 rs708564 TT may be a genetic modifier for avoiding HCV infection whether as a sole single nucleotide polymorphism or combined with the CLDN1 rs893051 GG genotype, and this effect is associated with serum levels of lipoprotein.
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Affiliation(s)
- Shuang Sun
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Guojiang Jin
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Hui Kang
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China.
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35
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Adinolfi LE, Nevola R, Lus G, Restivo L, Guerrera B, Romano C, Zampino R, Rinaldi L, Sellitto A, Giordano M, Marrone A. Chronic hepatitis C virus infection and neurological and psychiatric disorders: An overview. World J Gastroenterol 2015; 21:2269-2280. [PMID: 25741133 PMCID: PMC4342902 DOI: 10.3748/wjg.v21.i8.2269] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/11/2014] [Accepted: 01/08/2015] [Indexed: 02/07/2023] Open
Abstract
Hepatitis C virus (HCV) infection is considered a systemic disease because of involvement of other organs and tissues concomitantly with liver disease. Among the extrahepatic manifestations, neuropsychiatric disorders have been reported in up to 50% of chronic HCV infected patients. Both the central and peripheral nervous system may be involved with a wide variety of clinical manifestations. Main HCV-associated neurological conditions include cerebrovascular events, encephalopathy, myelitis, encephalomyelitis, and cognitive impairment, whereas “brain fog”, depression, anxiety, and fatigue are at the top of the list of psychiatric disorders. Moreover, HCV infection is known to cause both motor and sensory peripheral neuropathy in the context of mixed cryoglobulinemia, and has also been recently recognized as an independent risk factor for stroke. These extrahepatic manifestations are independent of severity of the underlying chronic liver disease and hepatic encephalopathy. The brain is a suitable site for HCV replication, where the virus may directly exert neurotoxicity; other mechanisms proposed to explain the pathogenesis of neuropsychiatric disorders in chronic HCV infection include derangement of metabolic pathways of infected cells, alterations in neurotransmitter circuits, autoimmune disorders, and cerebral or systemic inflammation. A pathogenic role for HCV is also suggested by improvement of neurological and psychiatric symptoms in patients achieving a sustained virologic response following interferon treatment; however, further ad hoc trials are needed to fully assess the impact of HCV infection and specific antiviral treatments on associated neuropsychiatric disorders.
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36
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Shawki SM, Meshaal SS, El Dash AS, Zayed NA, Hanna MOF. Increased DNA damage in hepatitis C virus-related hepatocellular carcinoma. DNA Cell Biol 2015; 33:884-90. [PMID: 25211328 DOI: 10.1089/dna.2014.2417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
One consequence of hepatitis C virus (HCV) infection is an elevated cancer risk. During chronic viral infection, deoxyribonucleic acid (DNA) damage is being induced by reactive oxygen and nitrogen species, which may play a pathogenic role in HCV-induced carcinogenesis. The study investigated DNA damage in peripheral blood lymphocytes from patients with hepatocellular carcinoma (HCC) and those with HCV infection with and without associated cirrhosis and normal controls. As a measure for genomic damage, the comet assay (single cell gel electrophoresis) was applied, which detects single- and double-strand breaks and alkali-labile sites through electrophoretic mobility of the resulting fragments. The levels of DNA damage were significantly higher in HCC and HCV-associated cirrhosis compared to HCV without cirrhosis and the control group. Patients presenting with DNA damage more than mean+two standard deviation of the controls had a 3.6-fold risk of having HCC more than those with undamaged DNA. HCV disease progression was the only discriminator predicting the extent of DNA damage. The accumulation of DNA damage is important in HCC evolution. DNA damage indicating intracellular oxidative and nitrative stress may lead to mutagenesis and consequently malignant transformation, which emphasizes the need to optimize the therapy for reducing the degree of genomic damage.
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Affiliation(s)
- Shereen M Shawki
- 1 Department of Clinical Pathology, Faculty of Medicine, Cairo University , Cairo, Egypt
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Dolganiuc A. Alcohol and Viral Hepatitis: Role of Lipid Rafts. Alcohol Res 2015; 37:299-309. [PMID: 26695752 PMCID: PMC4590625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Both alcohol abuse and infection with hepatitis viruses can lead to liver disease, including chronic hepatitis. Alcohol and hepatitis viruses have synergistic effects in the development of liver disease. Some of these involve the cellular membranes and particularly their functionally active domains, termed lipid rafts, which contain many proteins with essential roles in signaling and other processes. These lipid rafts play a central role in the lifecycles of hepatitis viruses. Alcohol's actions at the lipid rafts may contribute to the synergistic harmful effects of alcohol and hepatitis viruses on the liver and the pathogenesis of liver disease.
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Affiliation(s)
- Angela Dolganiuc
- Department of Medicine/Gastroenterology, Hepatology, and Nutrition at the University of Florida, Gainesville, Florida
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Hussein N, Zekri ARN, Abouelhoda M, Alam El-Din HM, Ghamry AA, Amer MA, Sherif GM, Bahnassy AA. New insight into HCV E1/E2 region of genotype 4a. Virol J 2014; 11:231. [PMID: 25547228 PMCID: PMC4304183 DOI: 10.1186/s12985-014-0231-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/17/2014] [Indexed: 01/21/2023] Open
Abstract
Introduction Hepatitis C virus (HCV) genome contains two envelope proteins (E1 and E2) responsible for the virus entry into the cell. There is a substantial lack of sequences covering the full length of E1/E2 region for genotype 4. Our study aims at providing new sequences as well as characterizing the genetic divergence of the E1/E2 region of HCV 4a using our new sequences along with all publicly available datasets. Methods The genomic segments covering the whole E1/E2 region were isolated from Egyptian HCV patients and sequenced. The resulting 36 sequences 36 were analyzed using sequence analysis techniques to study variability within and among hosts in the same time point. Furthermore, previously published HCV E1/E2 sequence datasets for genotype 4a were retrieved and categorized according to the geographical location and date of isolation and were used for further analysis of variability among Egyptian over a period of 15 years, also compared with non-Egyptian sequences to figure out region-specific variability. Results Phylogenetic analysis of the new sequences has shown variability within the host and among different individuals in the same time point. Analysis of the 36 sequences along with the Egyptian sequences (254 sequences in E1 in the period from 1997 to 2010 and 8 E2 sequences in the period from 2006 to 2010) has shown temporal change over time. Analysis of the new HCV sequences with the non-Egyptian sequences (182 sequences in E1 and 155 sequences in the E2) has shown region specific variability. The molecular clock rate of E1 was estimated to be 5E-3 per site per year for Egyptian and 5.38E-3 for non-Egyptian. The clock rate of E2 was estimated to be 8.48E per site per year for Egyptian and 6.3E-3 for non-Egyptian. Conclusion The results of this study support the high rate of evolution of the Egyptian HCV genotype 4a. It has also revealed significant level of genetic variability among sequences from different regions in the world. Electronic supplementary material The online version of this article (doi:10.1186/s12985-014-0231-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nehal Hussein
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Fom El-Khalig, Cairo, 11796, Egypt.
| | - Abdel-Rahman N Zekri
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Fom El-Khalig, Cairo, 11796, Egypt.
| | - Mohamed Abouelhoda
- Faculty of Engineering, Cairo University, Giza, Egypt. .,Center for Informatics Sciences, Nile University, Giza, Egypt.
| | - Hanaa M Alam El-Din
- Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Fom El-Khalig, Cairo, 11796, Egypt.
| | | | - Mahmoud A Amer
- Faculty of Science, Zoology Department, Cairo University, Giza, Egypt.
| | - Ghada M Sherif
- Biostatistic & Epidemiology Department, National Cancer Institute, Cairo University, Cairo, Egypt.
| | - Abeer A Bahnassy
- Pathology Department, National Cancer Institute, Cairo University, Cairo, Egypt.
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Inferring viral dynamics in chronically HCV infected patients from the spatial distribution of infected hepatocytes. PLoS Comput Biol 2014; 10:e1003934. [PMID: 25393308 PMCID: PMC4230741 DOI: 10.1371/journal.pcbi.1003934] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 09/24/2014] [Indexed: 12/25/2022] Open
Abstract
Chronic liver infection by hepatitis C virus (HCV) is a major public health concern. Despite partly successful treatment options, several aspects of intrahepatic HCV infection dynamics are still poorly understood, including the preferred mode of viral propagation, as well as the proportion of infected hepatocytes. Answers to these questions have important implications for the development of therapeutic interventions. In this study, we present methods to analyze the spatial distribution of infected hepatocytes obtained by single cell laser capture microdissection from liver biopsy samples of patients chronically infected with HCV. By characterizing the internal structure of clusters of infected cells, we are able to evaluate hypotheses about intrahepatic infection dynamics. We found that individual clusters on biopsy samples range in size from infected cells. In addition, the HCV RNA content in a cluster declines from the cell that presumably founded the cluster to cells at the maximal cluster extension. These observations support the idea that HCV infection in the liver is seeded randomly (e.g. from the blood) and then spreads locally. Assuming that the amount of intracellular HCV RNA is a proxy for how long a cell has been infected, we estimate based on models of intracellular HCV RNA replication and accumulation that cells in clusters have been infected on average for less than a week. Further, we do not find a relationship between the cluster size and the estimated cluster expansion time. Our method represents a novel approach to make inferences about infection dynamics in solid tissues from static spatial data. Around 170 million people worldwide are chronically infected with the hepatitis C virus (HCV). Although partly successful treatment options are available, several aspects of HCV infection dynamics within the liver are still poorly understood. How many hepatocytes are infected during chronic HCV infection? How does the virus propagate, and how do innate immune responses interfere with the spread of the virus? We developed mathematical and computational methods to study liver biopsy samples of patients chronically infected with HCV that were analyzed by single cell laser capture microdissection, to infer the spatial distribution of infected cells. With these methods, we find that infected cells on biopsy sections tend to occur in clusters comprising 4–50 hepatocytes, and, based on their amount of intracellular viral RNA, that these cells have been infected for less than a week. The observed HCV RNA profile within clusters of infected cells suggests that factors such as local immune responses could have shaped cluster expansion and intracellular viral replication. Our methods can be applied to various types of infections in order to infer infection dynamics from spatial data.
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Tran NM, Dufresne M, Helle F, Hoffmann TW, François C, Brochot E, Paullier P, Legallais C, Duverlie G, Castelain S. Alginate hydrogel protects encapsulated hepatic HuH-7 cells against hepatitis C virus and other viral infections. PLoS One 2014; 9:e109969. [PMID: 25310111 PMCID: PMC4195705 DOI: 10.1371/journal.pone.0109969] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/11/2014] [Indexed: 12/25/2022] Open
Abstract
Cell microencapsulation in alginate hydrogel has shown interesting applications in regenerative medicine and the biomedical field through implantation of encapsulated tissue or for bioartificial organ development. Although alginate solution is known to have low antiviral activity, the same property regarding alginate gel has not yet been studied. The aim of this work is to investigate the potential protective effect of alginate encapsulation against hepatitis C virus (HCV) infection for a hepatic cell line (HuH-7) normally permissive to the virus. Our results showed that alginate hydrogel protects HuH-7 cells against HCV when the supernatant was loaded with HCV. In addition, alginate hydrogel blocked HCV particle release out of the beads when the HuH-7 cells were previously infected and encapsulated. There was evidence of interaction between the molecules of alginate hydrogel and HCV, which was dose- and incubation time-dependent. The protective efficiency of alginate hydrogel towards HCV infection was confirmed against a variety of viruses, whether or not they were enveloped. This promising interaction between an alginate matrix and viruses, whose chemical mechanisms are discussed, is of great interest for further medical therapeutic applications based on tissue engineering.
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Affiliation(s)
- Nhu-Mai Tran
- UMR CNRS 7338 Biomechanics and Bioingineering, University of Technology, Compiègne, France
| | - Murielle Dufresne
- UMR CNRS 7338 Biomechanics and Bioingineering, University of Technology, Compiègne, France
- * E-mail:
| | - François Helle
- EA4294 Department of Fundamental and Clinical Virology, University of Picardie Jules Verne, Amiens, France
| | - Thomas Walter Hoffmann
- EA4294 Department of Fundamental and Clinical Virology, University of Picardie Jules Verne, Amiens, France
| | - Catherine François
- EA4294 Department of Fundamental and Clinical Virology, University of Picardie Jules Verne, Amiens, France
| | - Etienne Brochot
- EA4294 Department of Fundamental and Clinical Virology, University of Picardie Jules Verne, Amiens, France
| | - Patrick Paullier
- UMR CNRS 7338 Biomechanics and Bioingineering, University of Technology, Compiègne, France
| | - Cécile Legallais
- UMR CNRS 7338 Biomechanics and Bioingineering, University of Technology, Compiègne, France
| | - Gilles Duverlie
- EA4294 Department of Fundamental and Clinical Virology, University of Picardie Jules Verne, Amiens, France
| | - Sandrine Castelain
- EA4294 Department of Fundamental and Clinical Virology, University of Picardie Jules Verne, Amiens, France
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Hetta HF, Mehta MJ, Shata MTM. Gut immune response in the presence of hepatitis C virus infection. World J Immunol 2014; 4:52-62. [DOI: 10.5411/wji.v4.i2.52] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 05/22/2014] [Accepted: 06/20/2014] [Indexed: 02/05/2023] Open
Abstract
Hepatitis C virus (HCV) is an important etiologic agent of hepatitis and a major cause of chronic liver infection that often leads to cirrhosis, fibrosis and hepatocellular carcinoma. Although, HCV is a hepatotropic virus, there is strong evidence that HCV could replicate extra-hepatic in the gastrointestinal tissue which could serve as a reservoir for HCV. The outcome of HCV infection depends mainly on the host innate and adaptive immune responses. Innate immunity against HCV includes mainly nuclear factor cells and activation of IFN-related genes. There is an immunologic link between the gut and the liver through a population of T-cells that are capable of homing to both the liver and gut via the portal circulation. However, little is known on the role of Gut immune response in HCV. In this review we discussed the immune regulation of Gut immune cells and its association with HCV pathogenesis, various outcomes of anti-HCV therapy, viral persistence and degree of liver inflammation. Additionally, we investigated the relationship between Gut immune responses to HCV and IL28B genotypes, which were identified as a strong predictor for HCV pathogenesis and treatment outcome after acute infection.
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Granato M, Lacconi V, Peddis M, Di Renzo L, Valia S, Rivanera D, Antonelli G, Frati L, Faggioni A, Cirone M. Hepatitis C virus present in the sera of infected patients interferes with the autophagic process of monocytes impairing their in-vitro differentiation into dendritic cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:1348-55. [DOI: 10.1016/j.bbamcr.2014.04.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 03/25/2014] [Accepted: 04/01/2014] [Indexed: 12/31/2022]
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Lonardo A, Adinolfi LE, Restivo L, Ballestri S, Romagnoli D, Baldelli E, Nascimbeni F, Loria P. Pathogenesis and significance of hepatitis C virus steatosis: An update on survival strategy of a successful pathogen. World J Gastroenterol 2014; 20:7089-7103. [PMID: 24966582 PMCID: PMC4064057 DOI: 10.3748/wjg.v20.i23.7089] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 04/03/2014] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) is a successful pathogen on the grounds that it exploits its host’s metabolism to build up viral particles; moreover it favours its own survival by inducing chronic disease and the development of specific anatomic changes in the infected organ. Steatosis, therefore, is associated with HCV infection by necessity rather than by chance alone. Approximately 6% of HCV patients have steatohepatitis. Interestingly, HCV steatosis occurs in the setting of multiple metabolic abnormalities (hyperuricemia, reversible hypocholesterolemia, insulin resistance, arterial hypertension and expansion of visceral adipose tissue) collectively referred to as “hepatitis C-associated dysmetabolic syndrome” (HCADS). General, nonalcoholic fatty liver disease (NAFLD)-like, mechanisms of steatogenesis (including increased availability of lipogenic substrates and de novo lipogenesis; decreased oxidation of fatty substrates and export of fatty substrates) are shared by all HCV genotypes. However, genotype 3 seemingly amplifies such steatogenic molecular mechanisms reported to occur in NAFLD via more profound changes in microsomal triglyceride transfer protein; peroxisome proliferator-activated receptor alpha; sterol regulatory element-binding proteins and phosphatase and tensin homologue. HCV steatosis has a remarkable clinical impact in as much as it is an acknowledged risk factor for accelerated fibrogenesis; for impaired treatment response to interferon and ribavirin; and development of hepatocellular carcinoma. Recent data, moreover, suggest that HCV-steatosis contributes to premature atherogenesis via both direct and indirect mechanisms. In conclusion, HCV steatosis fulfills all expected requirements necessary to perpetuate the HCV life cycle. A better understanding of the physiology of HCADS will likely result in a more successful handling of disease with improved antiviral success rates.
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Dichamp I, Abbas W, Kumar A, Di Martino V, Herbein G. Cellular activation and intracellular HCV load in peripheral blood monocytes isolated from HCV monoinfected and HIV-HCV coinfected patients. PLoS One 2014; 9:e96907. [PMID: 24809719 PMCID: PMC4014560 DOI: 10.1371/journal.pone.0096907] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 04/13/2014] [Indexed: 12/13/2022] Open
Abstract
Background During HCV infection, the activation status of peripheral blood monocytes and its impact on HCV replication are poorly understood. We hypothesized that a modified activation of peripheral blood monocytes in HIV-HCV coinfected compared to HCV monoinfected patients may contribute to different monocytes reservoirs of HCV replication. Methods We performed a case-control analysis involving HCV-infected patients with and without HIV coinfection. In peripheral blood mononuclear cells (PBMCs), peripheral blood lymphocytes (PBLs) and peripheral blood monocytes isolated from HCV monoinfected and HIV-HCV coinfected patients, intracellular HCV load and a marker of cellular activation, nuclear factor-kappaB (NF-κB) activation, were quantified using intracellular detection of HCV-core protein and electrophoretic mobility shift assay, respectively. Results Intracellular HCV loads were higher in monocytes isolated from HIV-HCV coinfected patients than in those of monoinfected patients. Among PBMCs isolated from HIV-HCV coinfected patients, intracellular HCV loads were higher in monocytes compared to PBLs. Cellular activation as measured by NF-κB activation was higher in monocytes isolated from HIV-HCV coinfected patients than in those of monoinfected patients. Conclusions Our results reveal the peripheral blood monocytes as an important extrahepatic reservoir for HCV in HIV-HCV coinfected patients and indicate a potential association between the activation state of monocytes and the size of the HCV reservoir in HIV-HCV coinfected patients.
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Affiliation(s)
- Isabelle Dichamp
- Pathogens and Inflammation Department, UPRES EA4266, SFR FED 4234, University of Franche-Comté, Besancon, France
- Department of Virology, CHRU Besançon, Besançon, France
| | - Wasim Abbas
- Pathogens and Inflammation Department, UPRES EA4266, SFR FED 4234, University of Franche-Comté, Besancon, France
- Department of Virology, CHRU Besançon, Besançon, France
| | - Amit Kumar
- Pathogens and Inflammation Department, UPRES EA4266, SFR FED 4234, University of Franche-Comté, Besancon, France
- Department of Virology, CHRU Besançon, Besançon, France
| | - Vincent Di Martino
- Pathogens and Inflammation Department, UPRES EA4266, SFR FED 4234, University of Franche-Comté, Besancon, France
- Department of Hepatology, CHRU Besançon, Besançon, France
| | - Georges Herbein
- Pathogens and Inflammation Department, UPRES EA4266, SFR FED 4234, University of Franche-Comté, Besancon, France
- Department of Virology, CHRU Besançon, Besançon, France
- * E-mail:
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Revie D, Salahuddin SZ. Role of macrophages and monocytes in hepatitis C virus infections. World J Gastroenterol 2014; 20:2777-2784. [PMID: 24659871 PMCID: PMC3961986 DOI: 10.3748/wjg.v20.i11.2777] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 11/27/2013] [Accepted: 01/06/2014] [Indexed: 02/06/2023] Open
Abstract
A number of studies conducted over many years have shown that hepatitis C virus (HCV) can infect a variety of cell types. In vivo infection of monocytes, macrophages, and dendritic cells by HCV has been frequently shown by a number of researchers. These studies have demonstrated replication of HCV by detecting the presence of both negative genomic strands and a variety of non-structural HCV proteins in infected cells. In addition, analyses of genome sequences have also shown that different cell types can harbor different HCV variants. Investigators have also done preliminary studies of which cellular genes are affected by HCV infection, but there have not yet been a sufficient number of these studies to understand the effects of infection on these cells. Analyses of in vitro HCV replication have shown that monocytes, macrophages and dendritic cells can be infected by HCV from patient sera or plasma. These studies suggest that entry and cellular locations may vary between different cell types. Some studies suggest that macrophages may preferentially allow HCV genotype 1 to replicate, but macrophages do not appear to select particular hypervariable regions. Overall, these studies agree with a model where monocytes and macrophages act as an amplification system, in which these cells are infected and show few cytopathic effects, but continuously produce HCV. This allows them to produce virus over an extended time and allows its spread to other cell types.
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Bose SK, Ray R. Hepatitis C virus infection and insulin resistance. World J Diabetes 2014; 5:52-58. [PMID: 24567801 PMCID: PMC3932427 DOI: 10.4239/wjd.v5.i1.52] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 12/20/2013] [Accepted: 01/14/2014] [Indexed: 02/05/2023] Open
Abstract
Approximately 170 million people worldwide are chronically infected with hepatitis C virus (HCV). Chronic HCV infection is the leading cause for the development of liver fibrosis, cirrhosis, hepatocellular carcinoma (HCC) and is the primary cause for liver transplantation in the western world. Insulin resistance is one of the pathological features in patients with HCV infection and often leads to development of type II diabetes. Insulin resistance plays an important role in the development of various complications associated with HCV infection. Recent evidence indicates that HCV associated insulin resistance may result in hepatic fibrosis, steatosis, HCC and resistance to anti-viral treatment. Thus, HCV associated insulin resistance is a therapeutic target at any stage of HCV infection. HCV modulates normal cellular gene expression and interferes with the insulin signaling pathway. Various mechanisms have been proposed in regard to HCV mediated insulin resistance, involving up regulation of inflammatory cytokines, like tumor necrosis factor-α, phosphorylation of insulin-receptor substrate-1, Akt, up-regulation of gluconeogenic genes like glucose 6 phosphatase, phosphoenolpyruvate carboxykinase 2, and accumulation of lipid droplets. In this review, we summarize the available information on how HCV infection interferes with insulin signaling pathways resulting in insulin resistance.
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Kaźmierczak J, Pawełczyk A, Cortes KC, Radkowski M. Seronegative hepatitis C virus infection. Arch Immunol Ther Exp (Warsz) 2013; 62:145-51. [PMID: 24202543 PMCID: PMC3950562 DOI: 10.1007/s00005-013-0257-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 10/25/2013] [Indexed: 12/16/2022]
Abstract
Hepatitis C virus (HCV) is a major cause of liver disease worldwide. The routine diagnostics identifying HCV infection include testing for specific anti-HCV antibodies by enzyme-linked immnunosorbent assay and viral genetic material in serum or plasma. However, a small proportion of patients persistently infected with HCV, in whom anti-HCV are undetectable, constitute a serious diagnostic and possibly epidemiologic problem, as they could facilitate pathogen spread in the population. This type of infection is termed seronegative or serosilent. Seronegative HCV infection is currently of great interest to both scientists and physicians. The review presents epidemiological data concerning the prevalence of seronegative HCV infection in HIV/HCV co-infected individuals, hemodialysis patients, and blood and organ donors. The possible mechanisms behind this atypical course of infection are discussed. Furthermore, the differences between seronegative and occult infections and prolonged seroconversion are explained.
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Affiliation(s)
- Justyna Kaźmierczak
- Department of Immunopathology of Infectious and Parasitic Diseases, Medical University of Warsaw, Warsaw, Poland,
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Jackowiak P, Kuls K, Budzko L, Mania A, Figlerowicz M, Figlerowicz M. Phylogeny and molecular evolution of the hepatitis C virus. INFECTION GENETICS AND EVOLUTION 2013; 21:67-82. [PMID: 24200590 DOI: 10.1016/j.meegid.2013.10.021] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 10/24/2013] [Accepted: 10/26/2013] [Indexed: 12/14/2022]
Abstract
The hepatitis C virus (HCV) is a globally prevalent human pathogen that causes persistent liver infections in most infected individuals. HCV is classified into seven phylogenetically distinct genotypes, which have different geographical distributions and levels of genetic diversity. Some of these genotypes are endemic and highly divergent, whereas others disseminate rapidly on an epidemic scale but display lower variability. HCV phylogeny has an important impact on disease epidemiology and clinical practice because the viral genotype may determine the pathogenesis and severity of the resultant chronic liver disease. In addition, there is a clear association between the HCV genotype and its susceptibility to antiviral treatment. Similarly to other RNA viruses, in a single host, HCV exists as a combination of related but genetically different variants. The whole formation is the actual target of selection exerted by a host organism and antiviral therapeutics. The genetic structure of the viral population is largely shaped by mutations that are constantly introduced during an error-prone replication. However, it appears that genetic recombination may also contribute to this process. This heterogeneous collection of variants has a significant ability to evolve towards the fitness optimum. Interestingly, negative selection, which restricts diversity, emerges as an essential force that drives HCV evolution. It is becoming clear that HCV evolves to become stably adapted to the host environment. In this article we review the HCV phylogeny and molecular evolution in the context of host-virus interactions.
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Affiliation(s)
- Paulina Jackowiak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznan, Poland
| | - Karolina Kuls
- Department of Infectious Diseases and Child Neurology, Karol Marcinkowski University of Medical Sciences, Szpitalna 27/33, 60-572 Poznan, Poland
| | - Lucyna Budzko
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznan, Poland
| | - Anna Mania
- Department of Infectious Diseases and Child Neurology, Karol Marcinkowski University of Medical Sciences, Szpitalna 27/33, 60-572 Poznan, Poland
| | - Magdalena Figlerowicz
- Department of Infectious Diseases and Child Neurology, Karol Marcinkowski University of Medical Sciences, Szpitalna 27/33, 60-572 Poznan, Poland
| | - Marek Figlerowicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznan, Poland; Institute of Computing Science, Poznan University of Technology, Piotrowo 3A, 60-965 Poznan, Poland.
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Bukong TN, Kodys K, Szabo G. Human ezrin-moesin-radixin proteins modulate hepatitis C virus infection. Hepatology 2013; 58:1569-79. [PMID: 23703860 PMCID: PMC3772999 DOI: 10.1002/hep.26500] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 04/26/2013] [Indexed: 12/22/2022]
Abstract
UNLABELLED Host cytoskeletal proteins of the ezrin-moesin-radixin (EMR) family have been shown to modulate single-stranded RNA virus infection through regulating stable microtubule formation. Antibody engagement of CD81, a key receptor for hepatitis C virus (HCV) entry, induces ezrin phosphorylation. Here we tested the role of EMR proteins in regulating HCV infection and explored potential therapeutic targets. We show that HCV E2 protein induces rapid ezrin phosphorylation and its cellular redistribution with F-actin by way of spleen tyrosine kinase (SYK). Therapeutically blocking the functional roles of SYK or F-actin reorganization significantly reduced Huh7.5 cell susceptibility to HCV J6/JFH-1 infection. Using gene regulation, real-time quantitative polymerase chain reaction, western blot, and fluorescent microscopy analysis, we found that proteins of the EMR family differentially regulate HCV infection in the J6/JFH-1/Huh7.5 cell system. Moesin and radixin, but not ezrin, expression were significantly decreased in chronic HCV J6/JFH-1-infected Huh7.5 cells and HCV-infected patient liver biopsies compared to controls. The decreases in moesin and radixin in HCV J6/JFH-1-infected Huh7.5 cells were associated with a significant increase in stable microtubules. Ezrin knockdown inhibited immediate postentry events in HCV infection. Overexpression of moesin or radixin significantly reduced HCV protein expression. In contrast, transient knockdown of moesin or radixin augmented HCV infection. Making use of the Con1 HCV replicon system, we tested the effect of EMR proteins on HCV replication. We found that transient knockdown of moesin increased HCV RNA expression while overexpression of EMR showed no significant effect on HCV replication. CONCLUSION Our findings demonstrate the important role of EMR proteins during HCV infection at the postentry level and highlight possible novel targets for HCV treatment.
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Affiliation(s)
| | | | - Gyongyi Szabo
- Contact Information: Gyongyi Szabo, MD, PhD, Department of Medicine, University of Massachusetts Medical School, LRB208, 364 Plantation Street, Worcester, MA 01605, USA; Tel: 001-508-856-5275; Fax: 001-508-856-4770;
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Padovani JL, Corvino SM, Drexler JF, Silva GF, Pardini MIDMC, Grotto RMT. In vitro detection of hepatitis C virus in platelets from uninfected individuals exposed to the virus. Rev Soc Bras Med Trop 2013; 46:154-5. [PMID: 23559343 DOI: 10.1590/0037-8682-1627-2013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 01/16/2013] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Despite hepatocytes being the target cells of hepatitis C virus (HCV), viral ribonucleic acid RNA has been detected in other cells, including platelets, which have been described as carriers of the virus in the circulation of infected patients. Platelets do not express cluster differentiation 81 CD81, the main receptor for the virus in hepatocytes, although this receptor protein has been found in megakaryocytes. Still, it is not clear if HCV interacts with platelets directly or if this interaction is a consequence of its association with megakaryocytes. The aim of this study was to evaluate the interaction of HCV with platelets from non-infected individuals, after in vitro exposure to the virus. METHODS Platelets obtained from 50 blood donors not infected by HCV were incubated in vitro at 37°C for 48h with serum containing 100,000IU∕mL of genotype 1 HCV. After incubation, RNA extracted from the platelets was assayed for the presence of HCV by reverse transcription – polymerase chain reaction RT-PCR. RESULTS After incubation in the presence of virus, all samples of platelets showed HCV RNA. CONCLUSIONS The results demonstrate that, in vitro, the virus interacts with platelets despite the absence of the receptor CD81, suggesting that other molecules could be involved in this association.
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Affiliation(s)
- Juliana Lara Padovani
- Laboratório de Biologia Molecular do Hemocentro de Botucatu, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista -UNESP, Botucatu, SP, Brasil
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