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Schulz E, Grumaz S, Hatzl S, Gornicec M, Valentin T, Huber-Kraßnitzer B, Kriegl L, Uhl B, Deutsch A, Greinix H, Krause R, Neumeister P. Pathogen detection by metagenomic next generation sequencing during neutropenic fever in patients with hematological malignancies. Open Forum Infect Dis 2022; 9:ofac393. [PMID: 36004313 PMCID: PMC9394763 DOI: 10.1093/ofid/ofac393] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/29/2022] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Febrile neutropenia (FN) following chemotherapy is a major cause of morbidity during cancer treatment. The performance of metagenomic next-generation sequencing (mNGS) of circulating cell-free DNA from plasma may be superior to blood culture (BC) diagnostics for identification of causative pathogens. The aim of this study was to validate mNGS (DISQVER test) for the detection of pathogens in hematologic patients with FN.
Methods
We collected paired whole blood specimens from central venous catheter and peripheral vein during FN for BC and mNGS testing. We repeated paired sampling at the earliest after 3 days of fever, which was defined as one FN episode. All clinical data were retrospectively reviewed by an infectious disease expert panel. We calculated percent positive agreement (PPA), percent negative agreement (PNA), percent overall agreement (POA), and sensitivity and specificity.
Results
We analyzed a total of 98 unselected FN episodes in 61 patients who developed predominantly FN after conditioning therapy for allogeneic (n = 22) or autologous (n = 21) hematopoietic stem cell transplantation. Success rate of mNGS was 99% (97/98). Positivity rate of mNGS was 43% (42/97) overall and 32% (31/97) excluding viruses compared to 14% (14/98) in BC. PPA, PNA and POA between mNGS and BC were 84.6% (95% CI, 54.6% to 98.1%), 63.1% (51.9% to 73.4%) and 66% (55.7% to 75.3%), respectively. Sensitivity for bacteria or fungi was 40% (28.0% to 52.9%) and 18.5% (9.9% to 30.0%), respectively.
Conclusion
Pathogen detection by mNGS (DISQVER) during unselected FN episodes shows twofold higher sensitivity and a broader pathogen spectrum than BC.
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Affiliation(s)
- Eduard Schulz
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
- Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland , USA
| | | | - Stefan Hatzl
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
- Intensive Care Unit, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Maximilian Gornicec
- Division of Infectious Diseases, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Thomas Valentin
- Division of Infectious Diseases, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Bianca Huber-Kraßnitzer
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Lisa Kriegl
- Division of Infectious Diseases, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Barbara Uhl
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Alexander Deutsch
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Hildegard Greinix
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Robert Krause
- Division of Infectious Diseases, Department of Internal Medicine, Medical University of Graz , Graz , Austria
| | - Peter Neumeister
- Division of Hematology, Department of Internal Medicine, Medical University of Graz , Graz , Austria
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Vijayvargiya P, Feri A, Mairey M, Rouillon C, Jeraldo PR, Esquer Garrigos Z, Thoendel MJ, Greenwood-Quaintance KE, Sohail MR, Sampathkumar P, Spychalla MT, Stewart AK, Patnaik MM, Tande AJ, Cruveiller S, Hannet I, Beurdeley P, Patel R. Metagenomic shotgun sequencing of blood to identify bacteria and viruses in leukemic febrile neutropenia. PLoS One 2022; 17:e0269405. [PMID: 35709201 PMCID: PMC9202879 DOI: 10.1371/journal.pone.0269405] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/19/2022] [Indexed: 11/23/2022] Open
Abstract
Despite diagnostic advances in microbiology, the etiology of neutropenic fever remains elusive in most cases. In this study, we evaluated the utility of a metagenomic shotgun sequencing based assay for detection of bacteria and viruses in blood samples of patients with febrile neutropenia. We prospectively enrolled 20 acute leukemia patients and obtained blood from these patients at three time points: 1) anytime from onset of neutropenia until before development of neutropenic fever, 2) within 24 hours of onset of neutropenic fever, 3) 5–7 days after onset of neutropenic fever. Blood samples underwent sample preparation, sequencing and analysis using the iDTECT® Dx Blood v1® platform (PathoQuest, Paris, France). Clinically relevant viruses or bacteria were detected in three cases each by metagenomic shotgun sequencing and blood cultures, albeit with no concordance between the two. Further optimization of sample preparation methods and sequencing platforms is needed before widespread adoption of this technology into clinical practice.
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Affiliation(s)
- Prakhar Vijayvargiya
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
- Division of Infectious Diseases, University of Mississippi Medical Center, Jackson, Mississippi, United States of America
| | | | | | | | - Patricio R. Jeraldo
- Department of Surgery, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
- Center for Individualized Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - Zerelda Esquer Garrigos
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
- Division of Infectious Diseases, University of Mississippi Medical Center, Jackson, Mississippi, United States of America
| | - Matthew J. Thoendel
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - Kerryl E. Greenwood-Quaintance
- Division of Clinical Microbiology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - M. Rizwan Sohail
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - Priya Sampathkumar
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - Megan T. Spychalla
- Division of Hematology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - A. K. Stewart
- Division of Hematology/Oncology, Mayo Clinic College of Medicine and Science, Scottsdale, Arizona, United States of America
| | - Mrinal M. Patnaik
- Division of Hematology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | - Aaron J. Tande
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
| | | | | | | | - Robin Patel
- Division of Infectious Diseases, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
- Division of Clinical Microbiology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota, United States of America
- * E-mail:
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3
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Rapid DNA visual detection of polymicrobial bloodstream infection using filter paper. Sci Rep 2022; 12:4515. [PMID: 35296724 PMCID: PMC8927095 DOI: 10.1038/s41598-022-08487-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/08/2022] [Indexed: 11/16/2022] Open
Abstract
Bloodstream infection (BSI) is a major complication in patients with cancers due to therapy-induced neutropenia and underlying conditions, which increases hospitalization time and mortality rate. Targeted and timely antimicrobial management is crucial to save the patients’ lives and reduce the social and economic burdens. Blood culture is a routine clinical diagnostic method of BSI with a long turnaround time, and generally identifies monomicrobial BSI. Thus, polymicrobial BSI often goes undetected although it occurs more frequently in these patients and results in more severe outcomes compared to monomicrobial BSI. In this work, we apply glutaric anhydride, N-hydroxysuccinimide and N,N′-dicyclohexylcarbodiimide to fabricate a functional surface on cellulose filter paper. Targeting three pathogens (Escherichia coli, Saccharomyces cerevisiae, and human cytomegalovirus) commonly occurring in BSI in neutropenic patients, we demonstrate rapid and accurate triplex pathogen DNA detection using the functionalized paper. All three pathogen DNA was identified in 1–5 min with a detection limit of 0.1–0.5 ng/µL. The developed test tool has the potential to provide rapid polymicrobial BSI diagnosis in support of timely, accurate antimicrobial treatment, and could be integrated into an automatic sample-to-result portable equipment.
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4
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Song Y, Neff M, Gyarmati P. Challenges and advances in the diagnosis of bloodstream infection. Future Microbiol 2022; 17:311-314. [PMID: 35172600 DOI: 10.2217/fmb-2021-0304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Yajing Song
- Cancer Biology and Pharmacology, University of Illinois College of Medicine, Peoria, IL, USA
| | - Michael Neff
- Cancer Biology and Pharmacology, University of Illinois College of Medicine, Peoria, IL, USA
| | - Peter Gyarmati
- Cancer Biology and Pharmacology, University of Illinois College of Medicine, Peoria, IL, USA
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5
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Shen Y, Freeman JA, Holland J, Solterbeck A, Naidu K, Soosapilla A, Downe P, Tang C, Kerridge I, Wallman L, Van Bilsen N, Milogiannakis V, Akerman A, Martins Costa Gomes G, Sandgren K, Cunningham AL, Turville S, Mulligan SP. COVID‐19 Vaccine Failure in Chronic Lymphocytic Leukaemia and Monoclonal B‐Lymphocytosis; Humoral and Cellular Immunity. Br J Haematol 2021; 197:41-51. [DOI: 10.1111/bjh.18014] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/08/2021] [Indexed: 11/26/2022]
Affiliation(s)
- Yandong Shen
- Department of Haematology Royal North Shore Hospital St Leonards NSW Australia
- Kolling Institute Royal North Shore Hospital St Leonards NSW Australia
| | - Jane A. Freeman
- Department of Haematology and Flow Cytometry Laverty Pathology Macquarie Park NSW Australia
- Northern Haematology and Oncology Group Sydney Adventist Hospital Wahroonga NSW Australia
| | - Juliette Holland
- Department of Microbiology Laverty Pathology, Macquarie Park NSW Australia
| | - Ann Solterbeck
- Statistical Revelations Pty Ltd 41 The Parade, Ocean Grove VIC Australia
| | - Kartik Naidu
- Department of Microbiology Laverty Pathology, Macquarie Park NSW Australia
| | - Asha Soosapilla
- Department of Haematology and Flow Cytometry Laverty Pathology Macquarie Park NSW Australia
| | - Paul Downe
- Department of Haematology and Flow Cytometry Laverty Pathology Macquarie Park NSW Australia
| | - Catherine Tang
- Department of Haematology and Flow Cytometry Laverty Pathology Macquarie Park NSW Australia
| | - Ian Kerridge
- Department of Haematology Royal North Shore Hospital St Leonards NSW Australia
| | - Lucinda Wallman
- Department of Immunology Laverty Pathology, Macquarie Park NSW Australia
| | - Nenna Van Bilsen
- Department of Haematology and Flow Cytometry Laverty Pathology Macquarie Park NSW Australia
| | | | - Anouschka Akerman
- Kirby Institute University of New South Wales Kensington NSW Australia
| | | | - Kerrie Sandgren
- Centre for Virology Research Westmead Institute Sydney Infectious Diseases University of Sydney NSW Australia
| | - Anthony L Cunningham
- Centre for Virology Research Westmead Institute Sydney Infectious Diseases University of Sydney NSW Australia
| | - Stuart Turville
- Kirby Institute University of New South Wales Kensington NSW Australia
| | - Stephen P. Mulligan
- Department of Haematology Royal North Shore Hospital St Leonards NSW Australia
- Kolling Institute Royal North Shore Hospital St Leonards NSW Australia
- Department of Haematology and Flow Cytometry Laverty Pathology Macquarie Park NSW Australia
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6
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Gustafsson I, Aust C, Yun Z, Broliden K, Öhrmalm L. Presence of human herpesvirus type 6, polyoma BK virus and parvovirus B19V in non-transplanted patients with hematological malignancies and neutropenic fever. JOURNAL OF CLINICAL VIROLOGY PLUS 2021. [DOI: 10.1016/j.jcvp.2021.100033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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7
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Obrová K, Grumaz S, Remely M, Czurda S, Krickl I, Herndlhofer S, Gleixner KV, Sperr WR, Größlinger L, Frank T, Andrade N, Egger‐Matiqi T, Peters C, Engstler G, Dworzak M, Attarbaschi A, Grotel M, Heuvel‐Eibrink MM, Moiseev IS, Rogacheva Y, Zubarovskaya L, Zubarovskaya N, Pichler H, Lawitschka A, Koller E, Keil F, Valent P, Sohn K, Lion T. Presence of viremia during febrile neutropenic episodes in patients undergoing chemotherapy for malignant neoplasms. Am J Hematol 2021; 96:719-726. [PMID: 33784434 DOI: 10.1002/ajh.26177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 12/17/2022]
Abstract
The importance of viral infections as a leading cause of morbidity and mortality is well documented in severely immunosuppressed patients undergoing allogeneic stem cell transplantation. By contrast, viral infections generally receive less attention in patients with malignant disorders undergoing chemotherapy, where the onset of neutropenic fever is mostly associated with bacterial or fungal infections, and screening for viral infections is not routinely performed. To address the occurrence of invasive viral infections in a clinical setting commonly associated with less pronounced immunosuppression, we have prospectively screened 237 febrile neutropenic episodes in pediatric (n = 77) and adult (n = 69) patients undergoing intensive chemotherapy, primarily for treatment of acute leukemia. Serial peripheral blood specimens were tested by RQ-PCR assays for the presence and quantity of the clinically relevant viruses CMV, EBV, HHV6 and HAdV, commonly reactivated in highly immunocompromised patients. Viremia was documented in 36 (15%) episodes investigated, including the detection of HHV6 (n = 14), EBV (n = 15), CMV (n = 6), or HAdV (n = 1). While low or intermediate levels of viremia (<104 virus copies/mL) were commonly associated with bacterial or fungal co-infection, viremia at higher levels (>104 copies/mL) was documented in patients without evidence for other infections, raising the possibility that at least in some instances the onset of fever may have been attributable to the virus detected. The observations suggest that viral infections, potentially resulting from reactivation, might also play a clinically relevant role in patients receiving chemotherapy for treatment of malignant neoplasms, and routine screening for viremia in this clinical setting might be warranted.
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Affiliation(s)
- Klára Obrová
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
| | | | - Marlene Remely
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
| | - Stefan Czurda
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
| | - Isabella Krickl
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
| | - Susanne Herndlhofer
- Department of Internal Medicine I, Division of Hematology & Hemostaseology Medical University of Vienna Vienna Austria
| | - Karoline V. Gleixner
- Department of Internal Medicine I, Division of Hematology & Hemostaseology Medical University of Vienna Vienna Austria
- Ludwig Boltzmann Institute for Hematology & Oncology Medical University of Vienna Vienna Austria
| | - Wolfgang R. Sperr
- Department of Internal Medicine I, Division of Hematology & Hemostaseology Medical University of Vienna Vienna Austria
- Ludwig Boltzmann Institute for Hematology & Oncology Medical University of Vienna Vienna Austria
| | | | - Tijana Frank
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
| | - Nuno Andrade
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
| | - Teresa Egger‐Matiqi
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Christina Peters
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Gernot Engstler
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Michael Dworzak
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Andishe Attarbaschi
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Martine Grotel
- Princess Máxima Center for Pediatric Oncology Utrecht The Netherlands
| | | | - Ivan S. Moiseev
- I. P. Pavlov First Saint Petersburg State Medical University Saint Petersburg Russia
| | - Yuliya Rogacheva
- I. P. Pavlov First Saint Petersburg State Medical University Saint Petersburg Russia
| | - Ludmilla Zubarovskaya
- I. P. Pavlov First Saint Petersburg State Medical University Saint Petersburg Russia
| | - Natalia Zubarovskaya
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Herbert Pichler
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | - Anita Lawitschka
- St. Anna Children's Hospital, Department of Pediatrics Medical University of Vienna Vienna Austria
| | | | - Felix Keil
- Ludwig Boltzmann Institute for Hematology & Oncology Medical University of Vienna Vienna Austria
- 3rd Medical Department Hanuschhospital Vienna Austria
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology & Hemostaseology Medical University of Vienna Vienna Austria
- Ludwig Boltzmann Institute for Hematology & Oncology Medical University of Vienna Vienna Austria
| | - Kai Sohn
- Fraunhofer IGB Stuttgart Germany
| | - Thomas Lion
- St.Anna Children's Cancer Research Institute (CCRI) Vienna Austria
- Ludwig Boltzmann Institute for Hematology & Oncology Medical University of Vienna Vienna Austria
- Labdia Labordiagnostik GmbH Vienna Austria
- Department of Pediatrics Medical University of Vienna Vienna Austria
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8
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Fragkou PC, Moschopoulos CD, Karofylakis E, Kelesidis T, Tsiodras S. Update in Viral Infections in the Intensive Care Unit. Front Med (Lausanne) 2021; 8:575580. [PMID: 33708775 PMCID: PMC7940368 DOI: 10.3389/fmed.2021.575580] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 02/02/2021] [Indexed: 12/15/2022] Open
Abstract
The advent of highly sensitive molecular diagnostic techniques has improved our ability to detect viral pathogens leading to severe and often fatal infections that require admission to the Intensive Care Unit (ICU). Viral infections in the ICU have pleomorphic clinical presentations including pneumonia, acute respiratory distress syndrome, respiratory failure, central or peripheral nervous system manifestations, and viral-induced shock. Besides de novo infections, certain viruses fall into latency and can be reactivated in both immunosuppressed and immunocompetent critically ill patients. Depending on the viral strain, transmission occurs either directly through contact with infectious materials and large droplets, or indirectly through suspended air particles (airborne transmission of droplet nuclei). Many viruses can efficiently spread within hospital environment leading to in-hospital outbreaks, sometimes with high rates of mortality and morbidity, thus infection control measures are of paramount importance. Despite the advances in detecting viral pathogens, limited progress has been made in antiviral treatments, contributing to unexpectedly high rates of unfavorable outcomes. Herein, we review the most updated data on epidemiology, common clinical features, diagnosis, pathogenesis, treatment and prevention of severe community- and hospital-acquired viral infections in the ICU settings.
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Affiliation(s)
- Paraskevi C. Fragkou
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, “Attikon” University Hospital, Athens, Greece
| | - Charalampos D. Moschopoulos
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, “Attikon” University Hospital, Athens, Greece
| | - Emmanouil Karofylakis
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, “Attikon” University Hospital, Athens, Greece
| | - Theodoros Kelesidis
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Sotirios Tsiodras
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, “Attikon” University Hospital, Athens, Greece
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Beyond Cytomegalovirus and Epstein-Barr Virus: a Review of Viruses Composing the Blood Virome of Solid Organ Transplant and Hematopoietic Stem Cell Transplant Recipients. Clin Microbiol Rev 2020; 33:33/4/e00027-20. [PMID: 32847820 DOI: 10.1128/cmr.00027-20] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Viral primary infections and reactivations are common complications in patients after solid organ transplantation (SOT) and hematopoietic stem cell transplantation (HSCT) and are associated with high morbidity and mortality. Among these patients, viral infections are frequently associated with viremia. Beyond the usual well-known viruses that are part of the routine clinical management of transplant recipients, numerous other viral signatures or genomes can be identified in the blood of these patients. The identification of novel viral species and variants by metagenomic next-generation sequencing has opened up a new field of investigation and new paradigms. Thus, there is a need to thoroughly describe the state of knowledge in this field with a review of all viral infections that should be scrutinized in high-risk populations. Here, we review the eukaryotic DNA and RNA viruses identified in blood, plasma, or serum samples of pediatric and adult SOT/HSCT recipients and the prevalence of their detection, with a particular focus on recently identified viruses and those for which their potential association with disease remains to be investigated, such as members of the Polyomaviridae, Anelloviridae, Flaviviridae, and Astroviridae families. Current knowledge of the clinical significance of these viral infections with associated viremia among transplant recipients is also discussed. To ensure a comprehensive description in these two populations, individuals described as healthy (mostly blood donors) are considered for comparative purposes. The list of viruses that should be on the clinicians' radar is certainly incomplete and will expand, but the challenge is to identify those of possible clinical significance.
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10
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Co-infections of human herpesviruses (CMV, HHV-6, HHV-7 and EBV) in non-transplant acute leukemia patients undergoing chemotherapy. Virol J 2020; 17:37. [PMID: 32183884 PMCID: PMC7079388 DOI: 10.1186/s12985-020-01302-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/21/2020] [Indexed: 12/15/2022] Open
Abstract
Background Human herpesviruses (HHVs) remain latent after primary infection and can be reactivated in response to immunosuppression and chemotherapy. Little is known about their incidence, potential relationships, risk factors and clinical impact in non-transplant leukemia patients. This study investigated prospectively incidence, risk factors, clinical impact and possible association of HHVs-(1–7) infections in patients with newly diagnosed acute leukemia. Methods Study design involved longitudinal sampling before chemotherapy and in different phases of chemotherapy: post-induction, post-remission, and post-salvage during 2016–2018. A total of 734 plasma samples from 95 patients were analyzed by a qualitative, multiplex PCR for HHVs detection and a quantitative real-time PCR was used for cytomegalovirus (CMV) quantification. HHVs-(1–6) IgG and IgM antibodies were tested using immunoassays. Risk factors were analyzed by binary logistic regression and relationships between viruses were analyzed using the Chi-square or Fisher’s exact test as appropriate. Results The overall seroprevalences of HHV-(1–6) IgG were high (> 80%). At least one herpes viral agent was detected in 60 patients (63.3%). CMV was the most commonly detected virus in the different phases of chemotherapy (19.4%), followed by HHV-6 (9.7%), HHV-7 (5.2%) and EBV (2.7%). HSV-1/2 and VZV DNA were not detected. Twenty-seven patients (28.4%) had more than one virus detected in the follow-up, with 23 who were co-infected. CMV/HHV-6 was the most frequent co-infection (69.5%, 16/23). HHV-6 infection (p = 0.008) was identified as a risk factor for CMV infection while salvage treatment (p = 0.04) and CMV infection (p = 0.007) were found to be independent risk factors for HHV-6 infection. CMV co-infection was associated with severe lymphopenia with an absolute lymphocyte count (ALC) (< 500/μL) (p = 0.009), rash (p = 0.011), pneumonia (p = 0.016) and opportunistic infections [bacteremia, p < 0.001 and invasive fungal infection, (p = 0.024)] more frequently than CMV mono-viral infections. Conclusions Our data suggest that co-infection with HHVs, especially CMV and HHV-6, may contribute to the development of serious clinical manifestations with profound lymphopenia, pneumonia rash and increased risk for bacterial and fungal co-infections. These findings may suggest the synergistic effect of HHVs associated infection.
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11
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Are Community Acquired Respiratory Viral Infections an Underestimated Burden in Hematology Patients? Microorganisms 2019; 7:microorganisms7110521. [PMID: 31684063 PMCID: PMC6920795 DOI: 10.3390/microorganisms7110521] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 12/25/2022] Open
Abstract
Despite a plethora of studies demonstrating significant morbidity and mortality due to community-acquired respiratory viral (CRV) infections in intensively treated hematology patients, and despite the availability of evidence-based guidelines for the diagnosis and management of respiratory viral infections in this setting, there is no uniform inclusion of respiratory viral infection management in the clinical hematology routine. Nevertheless, timely diagnosis and systematic management of CRV infections in intensively treated hematology patients has a demonstrated potential to significantly improve outcome. We have briefly summarized the recently published data on CRV infection epidemiology, as well as guidelines on the diagnosis and management of CRV infections in patients intensively treated for hematological malignancies. We have also assessed available treatment options, as well as mentioned novel agents currently in development.
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12
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Shahrabi S, Maleknia M, Tavakolifar Y, D. Zayeri Z, Saki N. Neutropenia and leukemia development: genetic risk factors and prognosis. Leuk Lymphoma 2019; 60:3363-3374. [DOI: 10.1080/10428194.2019.1630622] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Saeid Shahrabi
- Department of Biochemistry and Hematology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Mohsen Maleknia
- Thalassemia & Hemoglobinopathy Research Center, Health Research Institute, Ahvaz Jundishapur, University of Medical Sciences, Ahvaz, Iran
| | - Yousef Tavakolifar
- Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab D. Zayeri
- Thalassemia & Hemoglobinopathy Research Center, Health Research Institute, Ahvaz Jundishapur, University of Medical Sciences, Ahvaz, Iran
| | - Najmaldin Saki
- Thalassemia & Hemoglobinopathy Research Center, Health Research Institute, Ahvaz Jundishapur, University of Medical Sciences, Ahvaz, Iran
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Abstract
BACKGROUND Although febrile neutropenia (FN) is one of the most common adverse events produced by chemotherapy, its microbiological etiology is determined for only 15% to 30% of cases. OBJECTIVES We investigated the rate of viremia with common DNA viruses in patients with FN. STUDY DESIGN From June 2012 to April 2014, 72 blood samples from 24 patients receiving chemotherapy, who experienced FN episodes, were examined for the presence of herpes viruses and other DNA viruses. We used real-time polymerase chain reaction assays to detect herpes simplex virus type 1 and 2, varicella zoster virus, Epstein-Barr virus, cytomegalovirus, human herpes virus types 6 and 7, BK virus and human parvovirus B19 (B19). RESULTS Viruses were identified in 14 of 72 samples (19.4%). The detected etiological agents were BK virus (5 episodes), human herpes virus type 6 (4 episodes), B19 (4 episodes), Epstein-Barr virus (2 episodes), and cytomegalovirus (1 episode). CONCLUSIONS Our results indicate that viral infections are common causes in patients with FN. Therefore, viruses may be responsible for FN in a large proportion of patients in whom a causative microorganism could not be identified, and this viral etiology may explain their poor response to antibiotic therapy.
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Przybylski M, Rynans S, Waszczuk-Gajda A, Bilinski J, Basak GW, Jędrzejczak WW, Wróblewska M, Młynarczyk G, Dzieciątkowski T. Sequence typing of human adenoviruses isolated from Polish patients subjected to allogeneic hematopoietic stem cell transplantation – a single center experience. Hematology 2018; 23:633-638. [DOI: 10.1080/10245332.2018.1457308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Affiliation(s)
- Maciej Przybylski
- Department of Medical Microbiology, Medical University of Warsaw, Warsaw, Poland
- Department of Microbiology, Central Clinical Hospital in Warsaw, Warsaw, Poland
| | - Sylwia Rynans
- Department of Medical Microbiology, Medical University of Warsaw, Warsaw, Poland
| | - Anna Waszczuk-Gajda
- Department of Haematology, Oncology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Jarosław Bilinski
- Department of Haematology, Oncology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Grzegorz W. Basak
- Department of Haematology, Oncology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Wiesław W. Jędrzejczak
- Department of Haematology, Oncology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Marta Wróblewska
- Department of Microbiology, Central Clinical Hospital in Warsaw, Warsaw, Poland
- Department of Dental Microbiology, Medical University of Warsaw, Warsaw, Poland
| | - Grażyna Młynarczyk
- Department of Medical Microbiology, Medical University of Warsaw, Warsaw, Poland
| | - Tomasz Dzieciątkowski
- Department of Medical Microbiology, Medical University of Warsaw, Warsaw, Poland
- Department of Microbiology, Central Clinical Hospital in Warsaw, Warsaw, Poland
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15
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Lavi N, Avivi I, Kra-Oz Z, Oren I, Hardak E. Community-acquired respiratory infections are common in patients with non-Hodgkin lymphoma and multiple myeloma. Support Care Cancer 2018; 26:2425-2431. [PMID: 29427192 DOI: 10.1007/s00520-018-4079-3] [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: 08/28/2017] [Accepted: 01/29/2018] [Indexed: 12/27/2022]
Abstract
PURPOSE Available data suggest that respiratory infections are associated with increased morbidity and mortality in patients hospitalized due to acute leukemia and allogeneic stem cell transplantation (allo-SCT). However, the precise incidence, risk factors, and severity of respiratory infection, mainly community-acquired, in patients with lymphoma and multiple myeloma (MM) are not fully determined. The current study aimed to investigate risk factors for respiratory infections and their clinical significance in patients with B cell non-Hodgkin lymphoma (NHL) and multiple myeloma (MM) in the first year of diagnosis. METHODS Data of consecutive patients diagnosed with NHL or MM and treated at the Rambam Hematology Inpatient and Outpatient Units between 01/2011 and 03/2012 were evaluated. Information regarding anticancer treatment, incidence and course of respiratory infections, and infection-related outcomes was analyzed. RESULTS One hundred and sixty episodes of respiratory infections were recorded in 103 (49%) of 211 (73-MM, 138-NHL) patients; 126 (79%) episodes were community-acquired, 47 (29%) of them required hospitalization. In univariate analysis, age < 60 years, MM diagnosis, and autologous SCT increased the respiratory infection risk (P = 0.058, 0.038, and 0.001, respectively). Ninety episodes (56% of all respiratory episodes) were examined for viral pathogens. Viral infections were documented in 25/90 (28%) episodes, 21 (84%) of them were community-acquired, requiring hospitalization in 5 (24%) cases. Anti-flu vaccination was performed in 119 (56%) patients. Two of the six patients diagnosed with influenza were vaccinated. CONCLUSIONS Respiratory infections, including viral ones, are common in NHL and MM. Most infections are community-acquired and have a favorable outcome. Rapid identification of viral pathogens allows avoiding antibiotic overuse in this patient population.
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Affiliation(s)
- Noa Lavi
- Department of Hematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
| | - Irit Avivi
- Department of Hematology and Bone Marrow Transplantation, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Zipora Kra-Oz
- Virology Laboratory, Rambam Health Care Campus, Haifa, Israel.,Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Ilana Oren
- Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel.,Infectious Diseases Unit, Rambam Health Care Campus, Haifa, Israel
| | - Emilia Hardak
- Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel. .,Division of Pulmonary Medicine, Rambam Health Care Campus, 8, Ha'Aliya St., 31096, Haifa, Israel.
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16
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Abstract
Human rhinovirus (HRV) and coronavirus (HCoV) infections are associated with both upper respiratory tract illness (“the common cold”) and lower respiratory tract illness (pneumonia). New species of HRVs and HCoVs have been diagnosed in the past decade. More sensitive diagnostic tests such as reverse transcription-polymerase chain reaction have expanded our understanding of the role these viruses play in both immunocompetent and immunosuppressed hosts. Recent identification of severe acute respiratory syndrome and Middle East respiratory syndrome viruses causing serious respiratory illnesses has led to renewed efforts for vaccine development. The role these viruses play in patients with chronic lung disease such as asthma makes the search for antiviral agents of increased importance.
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Affiliation(s)
- Stephen B Greenberg
- Department of Medicine, Ben Taub Hospital, Baylor College of Medicine, Houston, Texas
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17
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Presence of rhinovirus in the respiratory tract of adolescents and young adults with asthma without symptoms of infection. Respir Med 2016; 115:1-6. [PMID: 27215496 PMCID: PMC7125923 DOI: 10.1016/j.rmed.2016.04.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/10/2016] [Accepted: 04/13/2016] [Indexed: 12/15/2022]
Abstract
Background Viral respiratory infections have been associated with up to 80% of wheezing episodes and asthma exacerbations. However, studies on the role of these viruses in asthmatic patients in the interval between exacerbations are sparse. This study aimed to determine the presence of respiratory viruses, without symptoms of infection, in the airways of young asthmatics as compared to healthy controls. Material and Methods Patients 10–35 years of age with stable asthma and a group of healthy controls were analyzed regarding the presence of RNA from common respiratory viruses in nasopharyngeal aspirates by PCR. Self-reported asthma control and quality of life, fraction of exhaled nitric oxide (FeNO), spirometry, and bronchial responsiveness to methacholine were recorded. Blood samples were collected to assess IgE sensitisation and eosinophil cationic protein (ECP) levels. Results In 354 patients with asthma and 108 healthy controls, human rhinovirus (HRV) was the only virus detected (4.5% of asthmatics vs. 0.9% of controls; p = 0.08). HRV+ asthma patients had a higher degree of aeroallergen IgE sensitisation (median 37.7 vs. 10.4 kUA/L, p = 0.04), and a tendency for higher levels of serum ECP (median 17.2 vs. 12.6 μg/L, p = 0.07), as compared to their HRV− counterparts. Conclusions Absence of symptoms of respiratory tract infection notwithstanding, HRV seems to be more prevalent in the airways of adolescents and young adults with asthma and a high degree of aeroallergen IgE sensitisation than in controls. The presence of HRV seems also to be related to systemic eosinophilic inflammation despite ongoing treatment with inhaled corticosteroids. Cross-sectional study on adolescents and young adults with asthma and healthy controls. Common respiratory viruses examined in nasopharyngeal aspirates by PCR. Only rhinovirus detected in subjects without symptoms of respiratory tract infection. Prevalence of rhinovirus tended to be higher in asthmatics compared to controls. Presence of rhinovirus associated with high degree of aeroallergen IgE sensitisation.
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18
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Gyarmati P, Kjellander C, Aust C, Song Y, Öhrmalm L, Giske CG. Metagenomic analysis of bloodstream infections in patients with acute leukemia and therapy-induced neutropenia. Sci Rep 2016; 6:23532. [PMID: 26996149 PMCID: PMC4800731 DOI: 10.1038/srep23532] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 03/08/2016] [Indexed: 01/05/2023] Open
Abstract
Leukemic patients are often immunocompromised due to underlying conditions, comorbidities and the effects of chemotherapy, and thus at risk for developing systemic infections. Bloodstream infection (BSI) is a severe complication in neutropenic patients, and is associated with increased mortality. BSI is routinely diagnosed with blood culture, which only detects culturable pathogens. We analyzed 27 blood samples from 9 patients with acute leukemia and suspected BSI at different time points of their antimicrobial treatment using shotgun metagenomics sequencing in order to detect unculturable and non-bacterial pathogens. Our findings confirm the presence of bacterial, fungal and viral pathogens alongside antimicrobial resistance genes. Decreased white blood cell (WBC) counts were associated with the presence of microbial DNA, and was inversely proportional to the number of sequencing reads. This study could indicate the use of high-throughput sequencing for personalized antimicrobial treatments in BSIs.
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Affiliation(s)
- P Gyarmati
- Karolinska Institutet, Department of Laboratory Medicine, Alfred Nobels Allé 8, Stockholm, 17177 Sweden.,Karolinska University Hospital, Department of Clinical Microbiology L2:02, Stockholm, 17176 Sweden
| | - C Kjellander
- Karolinska Institutet, Department of Medicine, Division of Hematology, Stockholm, 17176 Sweden
| | - C Aust
- Karolinska Institutet, Department of Medicine, Solna, Infectious Diseases Unit, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, 17176 Sweden
| | - Y Song
- Royal Institute of Technology, Science for Life Laboratory, Stockholm, 17176 Sweden
| | - L Öhrmalm
- Karolinska Institutet, Department of Medicine, Solna, Infectious Diseases Unit, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, 17176 Sweden
| | - C G Giske
- Karolinska Institutet, Department of Laboratory Medicine, Alfred Nobels Allé 8, Stockholm, 17177 Sweden.,Karolinska University Hospital, Department of Clinical Microbiology L2:02, Stockholm, 17176 Sweden
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20
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An Association between BK Virus Replication in Bone Marrow and Cytopenia in Kidney-Transplant Recipients. J Transplant 2014; 2014:252914. [PMID: 24868448 PMCID: PMC4020201 DOI: 10.1155/2014/252914] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 04/18/2014] [Accepted: 04/18/2014] [Indexed: 12/16/2022] Open
Abstract
The human polyomavirus BK (BKV) is associated with severe complications, such as ureteric stenosis and polyomavirus-associated nephropathy (PVAN), which often occur in kidney-transplant patients. However, it is unknown if BKV can replicate within bone marrow. The aim of this study was to search for BKV replication within the bone marrow of kidney-transplant patients presenting with a hematological disorder. Seventy-two kidney-transplant patients underwent bone-marrow aspiration for cytopenia. At least one virus was detected in the bone marrow of 25/72 patients (35%), that is, parvovirus B19 alone (n = 8), parvovirus plus Epstein-Barr virus (EBV) (n = 3), cytomegalovirus (n = 4), EBV (n = 2), BKV alone (n = 7), and BKV plus EBV (n = 1). Three of the eight patients who had BKV replication within the bone marrow had no detectable BKV replication in the blood. Neutropenia was observed in all patients with BKV replication in the bone marrow, and blockade of granulocyte maturation was observed. Hematological disorders disappeared in all patients after doses of immunosuppressants were reduced. In conclusion, an association between BKV replication in bone marrow and hematological disorders, especially neutropenia, was observed. Further studies are needed to confirm these findings.
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21
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Cutino-Moguel T, Lauinger IL, Srivastava S, Zuckerman M, Tong CYW, Devereux S. Analysis of a potential cluster of rhinovirus infections in patients and staff on two haemato-oncology wards. J Clin Virol 2014; 60:57-9. [PMID: 24630953 DOI: 10.1016/j.jcv.2014.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 12/24/2013] [Accepted: 02/07/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND Human rhinoviruses (HRV) cause the common cold, increased mortality in patients attending elderly care facilities and significant morbidity as well as mortality in the post-transplantation setting. OBJECTIVES The aim of the study was to determine if there had been a breakdown in infection control practice in a large haemato-oncology centre. Molecular techniques had detected increased numbers of HRV in respiratory samples from patients and staff over a 6-week period. Typing was performed to investigate the possibility of transmission between individuals. STUDY DESIGN This was a retrospective study having detected HRV RNA in combined nose and throat swab samples that were collected from 13 individuals: 8 patients and 5 staff members, in the haemato-oncology wards of a tertiary referral centre in January and February 2011. The 5'NTR and the VP4/VP2 region were used for HRV typing. RESULTS All 3 HRV species were detected with 7 HRV-A, 1 HRV-B, 4 HRV-C and 1 untyped. None of the individuals were infected by the same HRV serotype. Three individuals had multiple samples collected: 1 patient had an HRV-B infection over a 4-week period, 1 patient had an HRV-A infection over 3 months and 1 staff member had an HRV-C infection over 1 week, each shedding an unchanged serotype throughout the whole period. CONCLUSION Nucleotide sequence analysis confirmed that there was no breakdown in infection control measures. No transmission incidents had occurred between patients and/or between staff and patients.
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Affiliation(s)
- T Cutino-Moguel
- South London Specialist Virology Centre, King's College Hospital NHS Foundation Trust, Denmark Hill SE5 9RS
| | - I L Lauinger
- Department of Infectious Diseases, King's College London School of Medicine, London SE1 7EH, UK; Department of Infectious Diseases and Centre for Clinical Infection and Diagnostics Research (CIDR), Guy's and St. Thomas' NHS Foundation Trust, London SE1 7EH, UK
| | - S Srivastava
- South London Specialist Virology Centre, King's College Hospital NHS Foundation Trust, Denmark Hill SE5 9RS
| | - M Zuckerman
- South London Specialist Virology Centre, King's College Hospital NHS Foundation Trust, Denmark Hill SE5 9RS.
| | - C Y W Tong
- Department of Infectious Diseases, King's College London School of Medicine, London SE1 7EH, UK; Department of Infectious Diseases and Centre for Clinical Infection and Diagnostics Research (CIDR), Guy's and St. Thomas' NHS Foundation Trust, London SE1 7EH, UK
| | - S Devereux
- King's College Hospital NHS Foundation Trust, Haematological Medicine, Denmark Hill SE5 9RS
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22
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Drieghe S, Ryckaert I, Beuselinck K, Lagrou K, Padalko E. Epidemiology of respiratory viruses in bronchoalveolar lavage samples in a tertiary hospital. J Clin Virol 2014; 59:208-11. [PMID: 24447853 PMCID: PMC7172540 DOI: 10.1016/j.jcv.2013.12.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 10/28/2013] [Accepted: 12/23/2013] [Indexed: 01/26/2023]
Abstract
Background The prevalence of respiratory viruses in adults is largely underexplored, as most studies focus on children. Additionally, in severely ill or immunocompromised adults, where respiratory infections are mostly attributed to bacteria and fungi; respiratory viruses can lead to severe complications. Objectives To evaluate the epidemiology of respiratory viruses in bronchoalveolar lavage fluid (BAL) specimens from patients with lower respiratory tract disease. The study population consisted of different groups including immunocompetent patients (control patients), solid organ transplant recipients, patients with haematological malignancies and other immunocompromised adults. Study design A total of 134 BAL fluid specimens collected during 2009–2011 were retrospectively assessed with the new commercial multiplex real-time PCR FTD Respiratory 21 Plus®, targeting 18 different viruses and 2 atypical bacterial pathogens. Results Viral or atypical bacterial pathogens were detected in 29.1% of BAL fluid specimens. Coronaviruses were most prevalent (13.4%), followed by rhinoviruses (5.2%), RSV (4.5%) and bocaviruses (3.7%). Comparing the total number of viruses detected, a statistically significant difference was observed between the control group and patients with haematological malignancies (27.5% vs. 57.1%, p < 0.05). Conclusion In conclusion, our study highlights the high prevalence of respiratory viruses in BAL fluid specimens from adult patients with lower respiratory tract disease. The methods to be used should be sensitive and cover a wide range of potential pathogens. The specific patient population can also influence the detection rates of respiratory viruses.
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Affiliation(s)
- Stefanie Drieghe
- Department of Clinical Chemistry, Microbiology and Immunology, University Hospital Ghent, De Pintelaan 185, 9000 Ghent, Belgium
| | - Inge Ryckaert
- Department of Clinical Chemistry, Microbiology and Immunology, University Hospital Ghent, De Pintelaan 185, 9000 Ghent, Belgium
| | - Kurt Beuselinck
- Department of Microbiology & Immunology, KU Leuven and Clinical Department Laboratory Medicine University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Katrien Lagrou
- Department of Microbiology & Immunology, KU Leuven and Clinical Department Laboratory Medicine University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Elizaveta Padalko
- Department of Clinical Chemistry, Microbiology and Immunology, University Hospital Ghent, De Pintelaan 185, 9000 Ghent, Belgium; School of Life Sciences, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium.
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23
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Öhrmalm L, Smedman C, Wong M, Broliden K, Tolfvenstam T, Norbeck O. Decreased functional T lymphocyte-mediated cytokine responses in patients with chemotherapy-induced neutropenia. J Intern Med 2013; 274:363-70. [PMID: 23789642 DOI: 10.1111/joim.12100] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
OBJECTIVES The degree of immunosuppression in patients with haematological malignancies treated with chemotherapy is routinely measured as number of circulating cells (preferable neutrophils) in peripheral blood. A parallel decline in the number of T cells is expected, but a possible alteration in their functionality has been less well explored. The ability of T cells to secrete more than one cytokine simultaneously is known to indicate protective immunity. The aim of this study was to determine whether the function of circulating T cells is altered in patients with chemotherapy-induced neutropenia. DESIGN, SETTING AND SUBJECTS In this cross-sectional study, we used the FluoroSpot assay to investigate the proportion of T cells secreting either interferon-γ or interleukin-2, or both cytokines simultaneously, after anti-CD3 stimulation. Peripheral blood mononuclear cells from 53 adult patients with chemotherapy-induced neutropenia and 20 healthy individuals were investigated. RESULTS There were significantly fewer T cells secreting interferon-γ in patients with neutropenia compared with healthy control subjects (P = 0.02), but the difference was greatest for dual cytokine-secreting T cells (P = 0.001). Furthermore, the amount of secreted cytokine per T cell appeared to be reduced in patients, compared with control subjects. CONCLUSION Our results suggest that the functionality of T cells is altered in patients with haematological malignancies with chemotherapy-induced neutropenia. In parallel with a decline in T cell count, this may further increase the risk of severe infections.
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Affiliation(s)
- L Öhrmalm
- Department of Medicine, Solna, Infectious Diseases Unit, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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Matthes-Martin S, Boztug H, Lion T. Diagnosis and treatment of adenovirus infection in immunocompromised patients. Expert Rev Anti Infect Ther 2013; 11:1017-28. [PMID: 24073835 DOI: 10.1586/14787210.2013.836964] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In immunocompromised patients, human adenovirus (HAdV) infections can cause life-threatening multiorgan disease. This review summarizes the incidence and risk factors of invasive human adenovirus infections in immunocompromised patients as well as the recently developed standards for diagnostic methods and strategies according to the predominant risk factors in adults and children. Recommendations for preemptive and therapeutic treatment strategies and the outcome in different risk groups are presented. Novel therapeutic approaches including CMX001, a new orally bioavailable lipid conjugate of cidofovir and the transfer of adenovirus-specific donor T cells in the context of allogeneic stem cell transplantation are discussed.
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Affiliation(s)
- Susanne Matthes-Martin
- St Anna Children's Hospital, Stem cell transplantation, Medical University of Vienna, Vienna, Austria
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25
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Öhrmalm L, Gustafson I, Lindblom A, Norbeck O, Johansson JE, Brune M, Ljungman P, Broliden K. Human parvovirus B19 in pediatric and adult recipients of allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2013; 48:1366-7. [DOI: 10.1038/bmt.2013.110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wong M, Barqasho B, Ohrmalm L, Tolfvenstam T, Nowak P. Microbial translocation contribute to febrile episodes in adults with chemotherapy-induced neutropenia. PLoS One 2013; 8:e68056. [PMID: 23874493 PMCID: PMC3712968 DOI: 10.1371/journal.pone.0068056] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 05/25/2013] [Indexed: 12/05/2022] Open
Abstract
In this study we sought to determine the contribution of microbial translocation to febrile episodes with no attributable microbiological cause (Fever of Unknown Origin, FUO) in an adult febrile neutropaenic cohort. Endotoxin concentrations were measured with the chromogenic Limulus Amoebocyte Assay and used as a direct measure of bacterial products whilst soluble CD14 (sCD14), measured with ELISA was selected as an indicator of the early host response to endotoxins. Endotoxin concentrations in this cohort were generally elevated but did not differ with the presentation of fever. Further stratification of the febrile episodes based on the microbiological findings revealed significantly (p = 0.0077) elevated endotoxin concentrations in FUO episodes compared with episodes with documented bacterial and viral findings. sCD14 concentrations were however, elevated in febrile episodes (p = 0.0066) and no association was observed between sCD14 concentration and microbiological findings. However, FUO episodes and episodes with Gram-negative bacteraemia were associated with higher median sCD14 concentrations than episodes with Gram-positive bacteraemia (p = 0.030). In conclusion, our findings suggest that in the absence of microbiological findings, microbial translocation could contribute to febrile episodes in an adult neutropaenic cohort. We further observed an association between prophylactic antibiotic use and increased plasma endotoxin concentrations (p = 0.0212).
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Affiliation(s)
- Michelle Wong
- Department of Medicine, Solna, Infectious Disease Unit, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden.
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27
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Vallières E, Renaud C. Clinical and economical impact of multiplex respiratory virus assays. Diagn Microbiol Infect Dis 2013; 76:255-61. [PMID: 23601453 PMCID: PMC7132665 DOI: 10.1016/j.diagmicrobio.2013.03.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 02/21/2013] [Accepted: 03/05/2013] [Indexed: 01/15/2023]
Abstract
During the last decade, a variety of molecular assays targeting respiratory viruses have been developed and commercialized. Therefore, multiplex PCR are increasingly used in everyday clinical practice. This improves our understanding of respiratory virus epidemiology and enhances our concerns about their clinical impact in specific patient populations. However, questions remain regarding cost-effectiveness of performing these diagnostic tests in routine and their real impact on patient care. This article will review available data and highlight unresolved questions about cost-effectiveness, infection control, clinical utility and public health impact of multiplex respiratory virus assays.
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Affiliation(s)
| | - Christian Renaud
- Département de Microbiologie et Immunologie, CHU Sainte-Justine, Université de Montréal, Montréal, Québec H3T 1C5, Canada
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28
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Abstract
Human rhinoviruses (HRVs), first discovered in the 1950s, are responsible for more than one-half of cold-like illnesses and cost billions of dollars annually in medical visits and missed days of work. Advances in molecular methods have enhanced our understanding of the genomic structure of HRV and have led to the characterization of three genetically distinct HRV groups, designated groups A, B, and C, within the genus Enterovirus and the family Picornaviridae. HRVs are traditionally associated with upper respiratory tract infection, otitis media, and sinusitis. In recent years, the increasing implementation of PCR assays for respiratory virus detection in clinical laboratories has facilitated the recognition of HRV as a lower respiratory tract pathogen, particularly in patients with asthma, infants, elderly patients, and immunocompromised hosts. Cultured isolates of HRV remain important for studies of viral characteristics and disease pathogenesis. Indeed, whether the clinical manifestations of HRV are related directly to viral pathogenicity or secondary to the host immune response is the subject of ongoing research. There are currently no approved antiviral therapies for HRVs, and treatment remains primarily supportive. This review provides a comprehensive, up-to-date assessment of the basic virology, pathogenesis, clinical epidemiology, and laboratory features of and treatment and prevention strategies for HRVs.
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Affiliation(s)
- Samantha E. Jacobs
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Weill Cornell Medical College, New York, New York, USA
| | - Daryl M. Lamson
- Laboratory of Viral Diseases, Wadsworth Center, Albany, New York, USA
| | | | - Thomas J. Walsh
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Weill Cornell Medical College, New York, New York, USA
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