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Cytomegalovirus Reactivation After Bendamustine-Based Chemotherapy. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2021. [DOI: 10.1097/ipc.0000000000000980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cytomegalovirus and Inflammatory Bowel Diseases (IBD) with a Special Focus on the Link with Ulcerative Colitis (UC). Microorganisms 2020; 8:microorganisms8071078. [PMID: 32698383 PMCID: PMC7409252 DOI: 10.3390/microorganisms8071078] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/10/2020] [Accepted: 07/12/2020] [Indexed: 12/16/2022] Open
Abstract
Cytomegalovirus (CMV) infects approximately 40% of adults in France and persists lifelong as a latent agent in different organs, including gut. A close relationship is observed between inflammation that favors viral expression and viral replication that exacerbates inflammation. In this context, CMV colitis may impact the prognosis of patients suffering from inflammatory bowel diseases (IBDs), and notably those with ulcerative colitis (UC). In UC, the mucosal inflammation and T helper cell (TH) 2 cytokines, together with immunomodulatory drugs used for controlling flare-ups, favor viral reactivation within the gut, which, in turn, increases mucosal inflammation, impairs corticoid and immunosuppressor efficacy (the probability of steroid resistance is multiplied by more than 20 in the case of CMV colitis), and enhances the risk for colectomy. This review emphasizes the virological tools that are recommended for exploring CMV colitis during inflammatory bowel diseases (IBD) and underlines the interest of using ganciclovir for treating flare-ups associated to CMV colitis in UC patients.
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Sorgato CC, Lins-E-Silva M, Leão JC, Vasconcelos LR, Romão TP, Duarte AL, Gueiros LA. EBV and CMV viral load in rheumatoid arthritis and their role in associated Sjögren's syndrome. J Oral Pathol Med 2020; 49:693-700. [PMID: 32428250 DOI: 10.1111/jop.13036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/10/2020] [Accepted: 04/19/2020] [Indexed: 01/08/2023]
Abstract
INTRODUCTION The role of viral infections in the pathogenesis of autoimmune diseases has long been suggested, but little evidence is available. OBJECTIVE This study aimed to evaluate an association between EBV and CMV and the presence of rheumatoid arthritis and its association with Sjögren's Syndrome. PATIENTS AND METHOD A case-control study was performed with 227 patients divided in RA (n = 99), RA/SS (n = 20), and C (n = 128). Resting salivary flow rate and Schirmer's test were performed; minor salivary gland biopsy was indicated in the case of suspected Sjögren's syndrome. CMV and EBV viral loads were quantified in peripheral blood, and their presence in glandular tissue samples was evaluated by in situ hybridization (EBV) and immunohistochemistry (CMV). RESULTS EBV was more frequent in RA and RA/SS than in C (P < .000007). No correlation with clinical markers (P > .05) or between RA and RA/SS was found (P > .05). A higher number of EBV/DNA copies were found in RA (158.52 copies/μL) and RA/SS (99.24 copies/μL) (P = .739). EBV/DNA was associated with the Schirmer test (P = .0231). CMV was detected in one patient of the RA group. None of the viruses were detected in biopsies of minor salivary glands. CONCLUSIONS Detection of EBV/DNA in peripheral blood was associated with RA regardless of the presence of SS.
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Affiliation(s)
- Camila Carvalho Sorgato
- Programa de Pós-graduação em Odontologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - Marília Lins-E-Silva
- Programa de Pós-graduação em Odontologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - Jair Carneiro Leão
- Oral Medicine Unit, Departmento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | - Angela Luzia Duarte
- Rheumatology Unit, Hospital das Clínicas/Universidade Federal de Pernambuco, Recife, Brazil
| | - Luiz Alcino Gueiros
- Oral Medicine Unit, Departmento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Recife, Brazil
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Hamann A, Broad K, Nguyen A, Pannier AK. Mechanisms of unprimed and dexamethasone-primed nonviral gene delivery to human mesenchymal stem cells. Biotechnol Bioeng 2018; 116:427-443. [PMID: 30450542 PMCID: PMC6322959 DOI: 10.1002/bit.26870] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/10/2018] [Accepted: 11/16/2018] [Indexed: 12/16/2022]
Abstract
Human mesenchymal stem cells (hMSCs) are under intense study for applications of cell and gene therapeutics because of their unique immunomodulatory and regenerative properties. Safe and efficient genetic modification of hMSCs could increase their clinical potential by allowing functional expression of therapeutic transgenes or control over behavior and differentiation. Viral gene delivery is efficient, but suffers from safety issues, while nonviral methods are safe, but highly inefficient, especially in hMSCs. Our lab previously demonstrated that priming cells before delivery of DNA complexes with dexamethasone (DEX), an anti‐inflammatory glucocorticoid drug, significantly increases hMSC transfection success. This work systematically investigates the mechanisms of hMSC transfection and DEX‐mediated enhancement of transfection. Our results show that hMSC transfection and its enhancement by DEX are decreased by inhibiting classical intracellular transport and nuclear import pathways, but DEX transfection priming does not increase cellular or nuclear internalization of plasmid DNA (pDNA). We also show that hMSC transgene expression is largely affected by pDNA promoter and enhancer sequence changes, but DEX‐mediated enhancement of transfection is unaffected by any pDNA sequence changes. Furthermore, DEX‐mediated transfection enhancement is not the result of increased transgene messenger RNA transcription or stability. However, DEX‐priming increases total protein synthesis by preventing hMSC apoptosis induced by transfection, resulting in increased translation of transgenic protein. DEX may also promote further enhancement of transgenic reporter enzyme activity by other downstream mechanisms. Mechanistic studies of nonviral gene delivery will inform future rationally designed technologies for safe and efficient genetic modification of clinically relevant cell types.
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Affiliation(s)
- Andrew Hamann
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Kelly Broad
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Albert Nguyen
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Angela K Pannier
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska
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Dowd JB, Bosch JA, Steptoe A, Jayabalasingham B, Lin J, Yolken R, Aiello AE. Persistent Herpesvirus Infections and Telomere Attrition Over 3 Years in the Whitehall II Cohort. J Infect Dis 2017; 216:565-572. [PMID: 28931225 DOI: 10.1093/infdis/jix255] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 05/23/2017] [Indexed: 12/15/2022] Open
Abstract
The determinants of telomere attrition, a potential marker of cellular aging, are not well understood. Persistent herpesvirus infections including cytomegalovirus (CMV) infection may be particularly important for telomere dynamics via mechanisms such as inflammation, oxidative stress, and their impact on peripheral blood lymphocyte composition. This study examined the association of 4 human herpesviruses (CMV, herpes simplex virus type 1, human herpesvirus type 6, and Epstein-Barr virus) with change in leukocyte telomere length (LTL) over 3 years in 400 healthy individuals (aged 53-76 years) from the Whitehall II cohort. CMV, herpes simplex virus type 1, and human herpesvirus 6 infection were independently associated with greater 3-year LTL attrition, with no association found for Epstein-Barr virus. The magnitudes of these associations were large, for example, the equivalent of almost 12 years of chronological age for those CMV seropositive. Seropositivity to more herpesviruses was additively associated with greater LTL attrition (3 herpesviruses vs none, β = -0.07 and P = .02; 4 infections vs none, β = -0.14 and P < .001). Higher immunoglobulin G antibody levels among those seropositive to CMV were also associated with shorter LTL at follow-up. These associations were robust to adjustment for age, sex, employment grade, body mass index, and smoking status. These results suggest that exposure to infectious agents should be an important consideration in future studies of telomere dynamics.
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Affiliation(s)
- Jennifer B Dowd
- Department of Global Health and Social Medicine, King's College London.,Epidemiology and Biostatistics, CUNY Graduate School of Public Health & Health Policy, New York, New York
| | - Jos A Bosch
- Department of Psychology, University of Amsterdam.,Academic Medical Centre, Amsterdam, The Netherlands.,Mannheim Institute of Public Health, Social and Preventive Medicine, Mannheim Medical Faculty, University of Heidelberg, Germany
| | - Andrew Steptoe
- Department of Epidemiology and Public Health, University College London, United Kingdom
| | - Bamini Jayabalasingham
- Epidemiology and Biostatistics, CUNY Graduate School of Public Health & Health Policy, New York, New York
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California, San Francisco
| | - Robert Yolken
- Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Allison E Aiello
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill
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Schneider M, Reitter EM, Kastner MT, Thannesberger J, Rieder FJJ, Preusser M, Marosi C, Steininger C. Absence of CMV viremia in high-grade glioma patients under low dosage glucocorticoid treatment. Neuro Oncol 2017; 19:1280-1282. [PMID: 28821204 DOI: 10.1093/neuonc/nox065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Martina Schneider
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Eva-Maria Reitter
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Marie-Theres Kastner
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Jakob Thannesberger
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Franz J J Rieder
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Matthias Preusser
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Christine Marosi
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - Christoph Steininger
- Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
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Monitoring of Epstein-Barr virus (EBV)/cytomegalovirus (CMV)/varicella-zoster virus (VZV) load in patients receiving tocilizumab for rheumatoid arthritis. Joint Bone Spine 2016; 83:412-5. [DOI: 10.1016/j.jbspin.2015.07.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 07/25/2015] [Indexed: 01/17/2023]
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Pillet S, Pozzetto B, Roblin X. Cytomegalovirus and ulcerative colitis: Place of antiviral therapy. World J Gastroenterol 2016; 22:2030-2045. [PMID: 26877608 PMCID: PMC4726676 DOI: 10.3748/wjg.v22.i6.2030] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 11/19/2015] [Accepted: 12/21/2015] [Indexed: 02/06/2023] Open
Abstract
The link between cytomegalovirus (CMV) infection and inflammatory bowel diseases remains an important subject of debate. CMV infection is frequent in ulcerative colitis (UC) and has been shown to be potentially harmful. CMV reactivation needs to be diagnosed using methods that include in situ detection of viral markers by immunohistochemistry or by nucleic acid amplification techniques. Determination of the density of infection using quantitative tools (numbers of infected cells or copies of the genome) is particularly important. Although CMV reactivation can be considered as an innocent bystander in active flare-ups of refractory UC, an increasing number of studies suggest a deleterious role of CMV in this situation. The presence of colonic CMV infection is possibly linked to a decreased response to steroids and other immunosuppressive agents. Some treatments, notably steroids and cyclosporine A, have been shown to favor CMV reactivation, which seems not to be the case for therapies using anti-tumor necrosis factor drugs. According to these findings, in flare-ups of refractory UC, it is now recommended to look for the presence of CMV reactivation by using quantitative tools in colonic biopsies and to treat them with ganciclovir in cases of high viral load or severe disease.
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