1
|
Lynch Y, Vande Vusse LK. Diffuse Alveolar Hemorrhage in Hematopoietic Cell Transplantation. J Intensive Care Med 2023:8850666231207331. [PMID: 37872657 DOI: 10.1177/08850666231207331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Diffuse alveolar hemorrhage (DAH) is a morbid syndrome that occurs after autologous and allogeneic hematopoietic cell transplantation in children and adults. DAH manifests most often in the first few weeks following transplantation. It presents with pneumonia-like symptoms and acute respiratory failure, often requiring high levels of oxygen supplementation or mechanical ventilatory support. Hemoptysis is variably present. Chest radiographs typically feature widespread alveolar filling, sometimes with peripheral sparing and pleural effusions. The diagnosis is suspected when serial bronchoalveolar lavages return increasingly bloody fluid. DAH is differentiated from infectious causes of alveolar hemorrhage when extensive microbiological testing reveals no pulmonary pathogens. The cause is poorly understood, though preclinical and clinical studies implicate pretransplant conditioning regimens, particularly those using high doses of total-body-irradiation, acute graft-versus-host disease (GVHD), medications used to prevent GVHD, and other factors. Treatment consists of supportive care, systemic corticosteroids, platelet transfusions, and sometimes includes antifibrinolytic drugs and topical procoagulant factors. Therapeutic blockade of tumor necrosis factor-α showed promise in observational studies, but its benefit for DAH remains uncertain after small clinical trials. Even with these treatments, mortality from progression and relapse is high. Future investigational therapies could target the vascular endothelial cell biology theorized to contribute to alveolar bleeding and pathways that contribute to susceptibility, inflammation, cellular resilience, and tissue repair. This review will help clinicians navigate through the limited evidence to diagnose and treat DAH, counsel patients and families, and plan for future research.
Collapse
Affiliation(s)
- Ylinne Lynch
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Lisa K Vande Vusse
- Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| |
Collapse
|
2
|
Zdanowicz K, Lewandowski D, Majewski P, Półkośnik K, Liwoch-Nienartowicz N, Reszeć-Giełażyn J, Lebensztejn DM, Sulik A, Toczyłowski K. Clinical Presentation and Co-Detection of Respiratory Pathogens in Children Under 5 Years with Non-COVID-19 Bacterial and Viral Respiratory Tract Infections: A Prospective Study in Białystok, Poland (2021-2022). Med Sci Monit 2023; 29:e941785. [PMID: 37794657 PMCID: PMC10563589 DOI: 10.12659/msm.941785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 08/02/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND Respiratory tract infections (RTIs) in children often involve a complex interplay between viruses and bacteria. This study aimed to evaluate clinical presentation in children under 5 years old diagnosed with non-COVID-19 bacterial and viral respiratory tract co-infections between October 2021 and May 2022 in Białystok, Poland. MATERIAL AND METHODS We recruited 100 children under 5 years with RTIs who tested negative for SARS-CoV-2. Nasopharyngeal swabs were screened for 19 viruses and 7 bacterial strains using molecular assays. RESULTS Viral pathogens were detected in 71% of patients and bacterial pathogens were detected in 59%. The most common pathogens were Haemophilus influenzae (n=48), rhinoviruses (n=32), and Streptococcus pneumoniae (n=30). Single pathogens were detected in 36%, dual in 37%, triple in 15%, and quadruple in 2%. Bacterial pathogens were co-detected with viruses in 40 cases, mostly with rhinoviruses (n=15). Two different viruses were found in 14 children and the most common co-detection was adenovirus with rhinovirus (n=5); dyspnea (63% vs 11%) and wheezing (75% vs 22%) were more common in children with human bocavirus. Fever was a common symptom in children with human adenovirus (88% vs 58%). Detection of bacteria and multiple detections were more common in day-care attendees, but were not associated with clinical picture of RTI. CONCLUSIONS Consistent with previous studies, we found a high prevalence of rhinoviruses, despite ongoing implementation of non-pharmaceutical interventions to contain the COVID-19 pandemic. Co-detection of 2 different respiratory pathogens was frequent, but we found no evidence that this was associated with the severity of infections.
Collapse
Affiliation(s)
- Katarzyna Zdanowicz
- Department of Paediatrics, Gastroenterology, Hepatology, Nutrition, Allergology and Pulmonology, Medical University of Białystok, Białystok, Poland
| | - Dawid Lewandowski
- Department of Paediatric Infectious Diseases, Medical University of Białystok, Białystok, Poland
| | - Piotr Majewski
- Department of Microbiological Diagnostics and Infectious Immunology, Medical University of Białystok, Białystok, Poland
| | - Kinga Półkośnik
- Department of Paediatrics, Gastroenterology, Hepatology, Nutrition, Allergology and Pulmonology, Medical University of Białystok, Białystok, Poland
| | | | - Joanna Reszeć-Giełażyn
- Department of Medical Pathomorphology, Medical University of Białystok, Białystok, Poland
| | - Dariusz Marek Lebensztejn
- Department of Paediatrics, Gastroenterology, Hepatology, Nutrition, Allergology and Pulmonology, Medical University of Białystok, Białystok, Poland
| | - Artur Sulik
- Department of Paediatric Infectious Diseases, Medical University of Białystok, Białystok, Poland
| | - Kacper Toczyłowski
- Department of Paediatric Infectious Diseases, Medical University of Białystok, Białystok, Poland
| |
Collapse
|
3
|
Habibi N, Uddin S, Behbehani M, Abdul Razzack N, Zakir F, Shajan A. SARS-CoV-2 in hospital air as revealed by comprehensive respiratory viral panel sequencing. Infect Prev Pract 2022; 4:100199. [PMID: 34977533 PMCID: PMC8711137 DOI: 10.1016/j.infpip.2021.100199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/16/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Nosocomially acquired severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) infection has become the most significant pandemic of our lifetime. Though its transmission was essentially attributed to droplets from an infected person, with recent advancements in knowledge, aerosol transmission seems to be a viable pathway, as well. Because of the lower biological load in ambient aerosol, detection of SARS-CoV-2 is challenging. A few recent attempts of sampling large aerosol volumes and using next-generation sequencing (NGS) to detect the presence of SARS-CoV-2 in the air at very low levels gave positive results. These results suggest the potential of using this technique to detect the presence of SARS-CoV-2 and use it as an early warning signal for possible outbreak or recurrence of coronavirus disease 2019 (COVID-19). AIM To assess efficacy of comprehensive respiratory viral panel (CRVP) sequencing and RT-PCR for low-level identification of SARS-CoV-2 and other respiratory viruses in indoor air. METHODS A large volume of indoor aerosol samples from three major hospitals involved in COVID-19 care in Kuwait was collected. Viral RNA was isolated and subjected to comprehensive respiratory viral panel sequencing (CRVP) as per the standard protocol to detect the SARS-CoV-2 and other respiratory viruses in the hospital aerosol and monitor variations within the sequences. RT-PCR was also employed to estimate the viral load of SARS-CoV-2. FINDINGS 13 of 15 (86.7%) samples exhibited SARS-CoV-2 with a relative abundance of 0.2-33.3%. The co-occurrence of human adenoviruses (type C1, C2, C5, C4), respiratory syncytial virus (RSV), influenza B, and non-SARS-CoV-229E were also recorded. Alignment of SARS-CoV-2 sequences against the reference strain of Wuhan China revealed variations in the form of single nucleotide polymorphisms (SNPs-17), insertions and deletions (indels-1). These variations were predicted to create missense (16), synonymous (15), frameshift (1) and stop-gained (1) mutations with a high (2), low (15), and moderate (16) impact. CONCLUSIONS Our results suggest that using CRVP on a large volume aerosol sample was a valuable tool for detecting SARS-CoV-2 in indoor aerosols of health care settings. Owing to its higher sensitivity, it can be employed as a surveillance strategy in the post COVID times to act as an early warning system to possibly control future outbreaks.
Collapse
Affiliation(s)
- Nazima Habibi
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| | - Saif Uddin
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| | - Montaha Behbehani
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| | - Nasreem Abdul Razzack
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| | - Farhana Zakir
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| | - Anisha Shajan
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
| |
Collapse
|
4
|
García-Arroyo L, Prim N, Del Cuerpo M, Marín P, Roig MC, Esteban M, Labeaga R, Martí N, Berengua C, Gich I, Navarro F, Rabella N. Prevalence and seasonality of viral respiratory infections in a temperate climate region: A 24-year study (1997-2020). Influenza Other Respir Viruses 2022; 16:756-766. [PMID: 35170253 PMCID: PMC9178050 DOI: 10.1111/irv.12972] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 11/29/2022] Open
Abstract
Background Few long‐term reports have been published on the epidemiology of respiratory viruses despite their frequent involvement in extremely common infections. The aim here was to determine the frequency and distribution of respiratory viruses in a temperate climate area (Barcelona, Spain) throughout a 24‐year period. Methods We collected data on all respiratory viruses detected from 1997 to 2020 in our institution. Clinical specimens were analyzed mainly by conventional techniques, and molecular techniques were also used. Results Of the 59,579 specimens analyzed, 21,382 (35.9%) were positive for at least one virus. The number of positive samples during cold months was significantly higher than in warm months. Respiratory virus infections were detected in patients of all ages, above all in children under 3 years of age, who were most frequently infected with the respiratory syncytial virus, whereas Influenza A virus predominated in the other groups, especially in adults. A clear demographic and seasonal pattern was established for some viruses. Circulation of other respiratory viruses during the FLUAV H1N1pdm09 and SARS‐CoV‐2 pandemics was observed. Conclusions This long‐term study provides new knowledge about the prevalence of respiratory viruses in a Mediterranean region. Throughout the study period, the frequency of some viruses remained constant, whereas others varied with the year. A clear demographic and seasonal pattern was established for some viruses. Patients suffering from severe respiratory infections should be examined for a range of respiratory viruses regardless of gender, age, or season.
Collapse
Affiliation(s)
- Laura García-Arroyo
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Núria Prim
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Marga Del Cuerpo
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Pilar Marín
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Maria Carme Roig
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Mnontserrat Esteban
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Rosa Labeaga
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Neus Martí
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Carla Berengua
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Ignasi Gich
- CIBER Epidemiología y Salud Pública (CIBERESP), Clinical Epidemiology and Public Health Department, Hospital de la Santa Creu i Sant Pau, Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain
| | - Ferran Navarro
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain.,Departament de Genètica i Microbiologia, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Núria Rabella
- Microbiology Department. Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Sant Pau Biomedical Research Institute (IIB Sant Pau), Barcelona, Spain.,Departament de Genètica i Microbiologia, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| |
Collapse
|
5
|
Flow Cytometry: From Experimental Design to Its Application in the Diagnosis and Monitoring of Respiratory Diseases. Int J Mol Sci 2020; 21:ijms21228830. [PMID: 33266385 PMCID: PMC7700151 DOI: 10.3390/ijms21228830] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 12/12/2022] Open
Abstract
Recent advances in the field of flow cytometry (FCM) have highlighted the importance of incorporating it as a basic analysis tool in laboratories. FCM not only allows the identification of cell subpopulations by detecting the expression of molecules in the cell membrane or cytoplasm, but it can also quantify and identify soluble molecules. The proper functioning of the FCM requires six fundamental systems, from those related to the transport of events to the systems dedicated to the analysis of information. In this review, we have identified the main considerations that every FCM user must know for an optimal antibody panel design, the quality systems that must govern the FCM protocols to guarantee reproducible results in research or clinical laboratories. Finally, we have introduced the current evidence that highlights the relevance of FCM in the investigation and clinical diagnosis of respiratory diseases, establishing important advances in the basic and clinical study of diseases as old as Tuberculosis along with the recent proposals for the monitoring and classification of patients infected with the new SARS-CoV2 virus.
Collapse
|
6
|
Abstract
Colorectal cancer (CRC) is a leading cause of cancer-related deaths in both the USA and the world. Recent research has demonstrated the involvement of the gut microbiota in CRC development and progression. Microbial biomarkers of disease have focused primarily on the bacterial component of the microbiome; however, the viral portion of the microbiome, consisting of both bacteriophages and eukaryotic viruses, together known as the virome, has been lesser studied. Here we review the recent advancements in high-throughput sequencing (HTS) technologies and bioinformatics, which have enabled scientists to better understand how viruses might influence the development of colorectal cancer. We discuss the contemporary findings revealing modulations in the virome and their correlation with CRC development and progression. While a variety of challenges still face viral HTS detection in clinical specimens, we consider herein numerous next steps for future basic and clinical research. Clinicians need to move away from a single infectious agent model for disease etiology by grasping new, more encompassing etiological paradigms, in which communities of various microbial components interact with each other and the host. The reporting and indexing of patient health information, socioeconomic data, and other relevant metadata will enable identification of predictive variables and covariates of viral presence and CRC development. Altogether, the virome has a more profound role in carcinogenesis and cancer progression than once thought, and viruses, specific for either human cells or bacteria, are clinically relevant in understanding CRC pathology, patient prognosis, and treatment development.
Collapse
|
7
|
Stempak LM, Vogel SA, Richter SS, Wyllie R, Procop GW. Routine Broad-Range Fungal Polymerase Chain Reaction With DNA Sequencing in Patients With Suspected Mycoses Does Not Add Value and Is Not Cost-Effective. Arch Pathol Lab Med 2018; 143:634-638. [DOI: 10.5858/arpa.2017-0299-oa] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Context.—
New molecular diagnostic tests regularly become available, and they may be assumed to be superior to traditional diagnostic studies. The added cost of these studies should be considered in conjunction with the value provided for patient care.
Objective.—
To assess the cost and diagnostic value of broad-range polymerase chain reaction (PCR) and DNA sequencing for the diagnosis of fungal infections compared with traditional studies.
Design.—
We reviewed the cost and clinical impact of broad-range fungal PCR/DNA sequencing for 65 specimens for which this test, a direct fungal examination, fungal culture, and a histopathologic assessment were performed.
Results.—
The sensitivity, specificity, and positive and negative predictive values for each of the assays studied were, respectively: histopathology (83.3%, 100%, 100%, and 98.3%); direct examination (66.7%, 100%, 100%, and 96.7%); fungal culture (83.3%, 100%, 100%, and 98.3%); and broad-range fungal PCR/DNA sequencing (83.3%, 95.0%, 62.5%, and 98.3%). The cost for broad-range fungal PCR/DNA sequencing was $32,500, compared with $8,591.70 for all traditional tests combined, for the 65 specimens included in this review.
Conclusions.—
Broad-range fungal PCR/DNA sequencing did not detect any infecting fungal pathogen that was not detected by at least 1 of the traditional methods, but 3 false-positives occurred. Broad-range fungal PCR/DNA sequencing is not a substitute for traditional laboratory studies and should be used judiciously to promote care affordability.
Collapse
Affiliation(s)
| | | | | | | | - Gary W. Procop
- From the Department of Pathology, The University of Mississippi Medical Center, Jackson (Dr Stempak); and the Pathology and Laboratory Medicine Institute (Ms Vogel and Drs Richter, Wyllie, and Procop) and Medical Operations (Drs Wyllie and Procop), Cleveland Clinic, Cleveland, Ohio
| |
Collapse
|
8
|
Diagnostic yield and clinical impact of routine cell culture for respiratory viruses among children with a negative multiplex RT-PCR result. J Clin Virol 2017; 94:107-109. [PMID: 28802185 PMCID: PMC7106410 DOI: 10.1016/j.jcv.2017.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 07/20/2017] [Accepted: 07/24/2017] [Indexed: 12/23/2022]
Abstract
4.2% of PCR-negative respiratory specimens were positive in viral culture. Half of the recovered viruses were not part of the multiplex PCR panel. Routine viral culture on PCR-negative respiratory specimens had minimal clinical impact. The findings of this study may help resource utilization in the virology laboratory.
Background Polymerase chain reaction (PCR) is the reference standard for respiratory virus testing. However, cell culture may still have added value in identifying viruses not detected by PCR. Objectives We aimed to estimate the yield and clinical impact of routine respiratory virus culture among children with a negative PCR result. Study design A retrospective cohort study was performed from Jan. 2013 to Sept. 2015. Respiratory samples from hospitalized or immunocompromised patients <18 years old were routinely inoculated on traditional tube cell culture monolayers if they tested negative by a PCR assay for 12 respiratory viruses. We studied patients with a respiratory specimen negative by PCR and positive by culture. Duplicates and samples of sold services were excluded. Data on demographics, clinical history, laboratory findings, and patient management were collected from patients’ charts. Descriptive and multivariate statistics were performed. Results Overall, 4638 PCR-negative samples were inoculated in cell culture. Of those, 196 (4.2%) were cell culture positive, and 144 met study inclusion criteria. Most subjects (81.9%) were hospitalized. Mean age was 2.4 ± 3.4 years. The viruses most frequently isolated were cytomegalovirus (33.3%) and enteroviruses (19.4%). Cell culture results prompted a change in management in 5 patients (3.5%), all of whom had acyclovir initiated for localized HSV-1 infection. Four of these had skin or mucosal lesions that could be sampled to establish a diagnosis. Conclusion In children, routine viral culture on respiratory specimens that were negative by PCR has low yield and minimal clinical impact.
Collapse
|
9
|
Wesolowska-Andersen A, Everman JL, Davidson R, Rios C, Herrin R, Eng C, Janssen WJ, Liu AH, Oh SS, Kumar R, Fingerlin TE, Rodriguez-Santana J, Burchard EG, Seibold MA. Dual RNA-seq reveals viral infections in asthmatic children without respiratory illness which are associated with changes in the airway transcriptome. Genome Biol 2017; 18:12. [PMID: 28103897 PMCID: PMC5244706 DOI: 10.1186/s13059-016-1140-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 12/16/2016] [Indexed: 12/01/2022] Open
Abstract
Background Respiratory illness caused by viral infection is associated with the development and exacerbation of childhood asthma. Little is known about the effects of respiratory viral infections in the absence of illness. Using quantitative PCR (qPCR) for common respiratory viruses and for two genes known to be highly upregulated in viral infections (CCL8/CXCL11), we screened 92 asthmatic and 69 healthy children without illness for respiratory virus infections. Results We found 21 viral qPCR-positive and 2 suspected virus-infected subjects with high expression of CCL8/CXCL11. We applied a dual RNA-seq workflow to these subjects, together with 25 viral qPCR-negative subjects, to compare qPCR with sequencing-based virus detection and to generate the airway transcriptome for analysis. RNA-seq virus detection achieved 86% sensitivity when compared to qPCR-based screening. We detected additional respiratory viruses in the two CCL8/CXCL11-high subjects and in two of the qPCR-negative subjects. Viral read counts varied widely and were used to stratify subjects into Virus-High and Virus-Low groups. Examination of the host airway transcriptome found that the Virus-High group was characterized by immune cell airway infiltration, downregulation of cilia genes, and dampening of type 2 inflammation. Even the Virus-Low group was differentiated from the No-Virus group by 100 genes, some involved in eIF2 signaling. Conclusions Respiratory virus infection without illness is not innocuous but may determine the airway function of these subjects by driving immune cell airway infiltration, cellular remodeling, and alteration of asthmogenic gene expression. Electronic supplementary material The online version of this article (doi:10.1186/s13059-016-1140-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
| | - Jamie L Everman
- Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, USA
| | - Rebecca Davidson
- Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, USA
| | - Cydney Rios
- Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, USA
| | - Rachelle Herrin
- Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, USA
| | - Celeste Eng
- Department of Medicine, University of California, San Francisco, CA, USA
| | | | - Andrew H Liu
- Department of Pediatrics, National Jewish Health, 1400 Jackson St, Denver, CO, 80206, USA.,Children's Hospital Colorado and University of Colorado School of Medicine, Aurora, CO, USA
| | - Sam S Oh
- Department of Medicine, University of California, San Francisco, CA, USA
| | - Rajesh Kumar
- Department of Pediatrics, The Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Tasha E Fingerlin
- Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, USA.,Department of Biomedical Research, National Jewish Health, Denver, CO, USA
| | | | - Esteban G Burchard
- Department of Medicine, University of California, San Francisco, CA, USA.,Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA
| | - Max A Seibold
- Center for Genes, Environment, and Health, National Jewish Health, Denver, CO, USA. .,Department of Pediatrics, National Jewish Health, 1400 Jackson St, Denver, CO, 80206, USA. .,Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado School of Medicine, Aurora, CO, USA.
| |
Collapse
|
10
|
Calderaro A, Arcangeletti MC, Rodighiero I, Buttrini M, Montecchini S, Vasile Simone R, Medici MC, Chezzi C, De Conto F. Identification of different respiratory viruses, after a cell culture step, by matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS). Sci Rep 2016; 6:36082. [PMID: 27786297 PMCID: PMC5081539 DOI: 10.1038/srep36082] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 10/11/2016] [Indexed: 02/06/2023] Open
Abstract
In this study matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS), a reliable identification method for the diagnosis of bacterial and fungal infections, is presented as an innovative tool to investigate the protein profile of cell cultures infected by the most common viruses causing respiratory tract infections in humans. MALDI-TOF MS was applied to the identification of influenza A and B viruses, adenovirus C species, parainfluenza virus types 1, 2 and 3, respiratory syncytial virus, echovirus, cytomegalovirus and metapneumovirus. In this study MALDI-TOF MS was proposed as a model to be applied to the identification of cultivable respiratory viruses using cell culture as a viral proteins enrichment method to the proteome profiling of virus infected and uninfected cell cultures. The reference virus strains and 58 viruses identified from respiratory samples of subjects with respiratory diseases positive for one of the above mentioned viral agents by cell culture were used for the in vitro infection of suitable cell cultures. The isolated viral particles, concentrated by ultracentrifugation, were used for subsequent protein extraction and their spectra profiles were generated by MALDI-TOF MS analysis. The newly created library allowed us to discriminate between uninfected and respiratory virus infected cell cultures.
Collapse
Affiliation(s)
- Adriana Calderaro
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Maria Cristina Arcangeletti
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Isabella Rodighiero
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Mirko Buttrini
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Sara Montecchini
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Rosita Vasile Simone
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Maria Cristina Medici
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Carlo Chezzi
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| | - Flora De Conto
- Department of Clinical and Experimental Medicine – Unit of Microbiology and Virology - University of Parma – Parma, Italy
| |
Collapse
|
11
|
Role of multiplex PCR analysis in children with febrile seizures. Wien Med Wochenschr 2016; 167:246-250. [PMID: 27324512 PMCID: PMC7088288 DOI: 10.1007/s10354-016-0462-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 05/10/2016] [Indexed: 11/07/2022]
Abstract
Background The aim of this study was to assess multiplex PCR analysis in detecting causative viruses in children with febrile seizures. Methods The study was a retrospective analysis comparing data from a pre-multiplex era (2009) with a period after the introduction of routine respiratory multiplex analysis (2010–2013) in children with febrile seizures. Results We included 200 children with febrile seizures (mean age: 29.5 ± 1.4.months; 104 male) in the study. In 2009, in 10 out of 49 (20 %) children, microbiology testing (bacterial/fungal) was positive compared with a rate of 74 out of 151 (49 %) children during 2010–2013 (p < 0.01). The rate of positive virological studies increased from 10 (20 %) in 2009 to 73 (48.3 %) in the period 2010–2013 (p < 0.01). Multiplex PCR analysis confirmed viral infections in 52 of 73 cases (71.2 %). Conclusion Routine multiplex PCR analysis fosters the detection of respiratory viruses in children with febrile seizure. The precise role of multiplex analysis in the management of these children awaits further clarification.
Collapse
|