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Guo XZ, Gong LH, Wang WX, Yang DS, Zhang BH, Zhou ZT, Yu XH. Chronic pulmonary mucormycosis caused by rhizopus microsporus mimics lung carcinoma in an immunocompetent adult: A case report. World J Clin Cases 2023; 11:3295-3303. [PMID: 37274035 PMCID: PMC10237139 DOI: 10.12998/wjcc.v11.i14.3295] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 04/02/2023] [Accepted: 04/12/2023] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND Pulmonary mucormycosis is a rare but life-threatening invasive fungal infection that mostly affects immunocompromised patients. This disease usually develops acutely and progresses rapidly, often leading to a poor clinical prognosis. Chronic pulmonary mucormycosis is highly unusual in immunocompetent patients.
CASE SUMMARY A 43-year-old man, who was a house improvement worker with a long history of occupational dust exposure, presented with an irritating cough that had lasted for two months. The patient was previously in good health, without dysglycemia or any known immunodeficiencies. Chest computed tomography revealed a mass in the left lower lobe, measuring approximately 6 cm in diameter, which was suspected to be primary lung carcinoma complicated with obstructive pneumonia. Thoracoscopic-assisted left lower lobectomy was performed, and metagenomic next-generation sequencing detection, along with special pathological staining of surgical specimens, suggested Rhizopus microsporus infection. Postoperatively, the patient's respiratory symptoms were relieved, and no signs of recurrence were found during the six-month follow-up.
CONCLUSION This article reports a rare case of chronic pulmonary mucormycosis caused by Rhizopus microsporus in a middle-aged male without dysglycemia or immunodeficiency. The patient's surgical outcome was excellent, reaffirming that surgery remains the cornerstone of pulmonary mucormycosis treatment.
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Affiliation(s)
- Xing-Zi Guo
- Department of Gynecologic Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410031, Hunan Province, China
| | - Liang-Hui Gong
- The Second Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410031, Hunan Province, China
| | - Wen-Xiang Wang
- The Second Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410031, Hunan Province, China
| | - De-Song Yang
- The Second Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410031, Hunan Province, China
| | - Bai-Hua Zhang
- The Second Department of Thoracic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410031, Hunan Province, China
| | - Ze-Tao Zhou
- GZMU-GIBH School of Life Sciences, Guangzhou Medical University, Guangzhou 511436, Guangdong Province, China
| | - Xiao-Hui Yu
- Department of Pathology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410031, Hunan Province, China
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Non- Aspergillus Hyaline Molds: A Host-Based Perspective of Emerging Pathogenic Fungi Causing Sinopulmonary Diseases. J Fungi (Basel) 2023; 9:jof9020212. [PMID: 36836326 PMCID: PMC9964096 DOI: 10.3390/jof9020212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
The incidence of invasive sino-pulmonary diseases due to non-Aspergillus hyaline molds is increasing due to an enlarging and evolving population of immunosuppressed hosts as well as improvements in the capabilities of molecular-based diagnostics. Herein, we review the following opportunistic pathogens known to cause sinopulmonary disease, the most common manifestation of hyalohyphomycosis: Fusarium spp., Scedosporium spp., Lomentospora prolificans, Scopulariopsis spp., Trichoderma spp., Acremonium spp., Paecilomyces variotii, Purpureocillium lilacinum, Rasamsonia argillacea species complex, Arthrographis kalrae, and Penicillium species. To facilitate an understanding of the epidemiology and clinical features of sino-pulmonary hyalohyphomycoses in the context of host immune impairment, we utilized a host-based approach encompassing the following underlying conditions: neutropenia, hematologic malignancy, hematopoietic and solid organ transplantation, chronic granulomatous disease, acquired immunodeficiency syndrome, cystic fibrosis, and healthy individuals who sustain burns, trauma, or iatrogenic exposures. We further summarize the pre-clinical and clinical data informing antifungal management for each pathogen and consider the role of adjunctive surgery and/or immunomodulatory treatments to optimize patient outcome.
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Liu W, Li M, Xu Y, Wang F, Wang J, Wang H, Xu X, Wang Y, Sun H. Evaluation of the Performance of a Multiplex Real-Time PCR Assay for the Identification of Aspergillus, Cryptococcus neoformans, and Pneumocystis jirovecii Simultaneously from Sputum in Multicenter. Infect Drug Resist 2022; 15:6009-6017. [PMID: 36267265 PMCID: PMC9576602 DOI: 10.2147/idr.s379043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 09/28/2022] [Indexed: 11/23/2022] Open
Abstract
PURPOSE To evaluate the performance of a multiplex real-time polymerase chain reaction (PCR) assay for the simultaneous identification of Aspergillus, Cryptococcus neoformans, and Pneumocystis jirovecii from sputum. PATIENTS AND METHODS Sputum samples (n=537) from patients with suspected invasive fungal infection (IFI) were collected from four centers; they were tested by both multiplex real-time PCR assay and DNA sequencing. DNA sequencing was considered as the reference method, and the performance of the multiplex real-time assay was evaluated by determining the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). The interference experiment, repeatability, reproducibility, and stability of the multiplex real-time PCR assay were also evaluated. RESULTS The detection performance of the multiplex real-time assay, compared with that of DNA sequencing, for the three pathogens was as follows: sensitivity, specificity, PPV, and NPV for Aspergillus, Cryptococcus neoformans, and Pneumocystis jirovecii were 99.40%, 98.64%, 97.09%, and 99.73%; 100%, 99.59%, 96.36%, and 100.00%; and 99.28%, 98.50%, 95.80%, and 99.75%, respectively. The consistency of the two methods was almost perfect: the kappa value was between 0.97 and 0.98. The minimum detection limit of the multiplex real-time assay for each of the three pathogens was 1250 copies/mL. Interference experiment showed that blood and normally used antifungal drugs had no effect on the results. No cross-reactivity was detected for any bacteria or fungi. In 40 patients, mixed infections by Aspergillus and/or Cryptococcus neoformans and/or Pneumocystis jirovecii were detected by the multiplex real-time assay. Among these patients, those with acquired immune deficiency syndrome (AIDS) ranked first, with Aspergillus and Pneumocystis mixed infection accounting for 75%. CONCLUSION The multiplex real-time PCR assay is fast, sensitive, and specific and has good clinical application prospects.
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Affiliation(s)
- Wenjing Liu
- Department of Laboratory Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, People’s Republic of China
| | - Min Li
- Department of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, People’s Republic of China
| | - Yingchun Xu
- Department of Laboratory Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, People’s Republic of China
| | - Fengchao Wang
- The First Affiliated Hospital of Bengbu Medical College, Anhui, 233004, People’s Republic of China
| | - Jing Wang
- Chongqing Public Health Medical Center, Chongqing, 400036, People’s Republic of China
| | - Huizhu Wang
- Department of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, People’s Republic of China
| | - Xinmin Xu
- Department of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, People’s Republic of China
| | - Yajie Wang
- Department of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing, 100015, People’s Republic of China
| | - Hongli Sun
- Department of Laboratory Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, People’s Republic of China
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Otto WR, Pahud BA, Yin DE. Pediatric Mucormycosis: A 10-Year Systematic Review of Reported Cases and Review of the Literature. J Pediatric Infect Dis Soc 2019; 8:342-350. [PMID: 31181136 DOI: 10.1093/jpids/piz007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 05/28/2019] [Indexed: 12/29/2022]
Abstract
Mucormycosis is a severe infection that affects a variety of patients, including immunocompromised children and neonates. Given improved survival rates from advances in the treatment of malignancies, the population at risk for mucormycosis is increasing. We conducted a systematic review of cases of mucormycosis in children in the English-language literature reported between August 2008 and June 2017 and analyzed the clinical characteristics, diagnosis, management, and outcome of those infections. The most common underlying diagnoses included neutropenia (41%), hematologic malignancy (39%), prematurity (13%), and hematopoietic stem cell transplant (11%). Sinus disease (28%) and disseminated disease (24%) were the most common presentations. Rhizopus spp were the most common organisms isolated (22%). Amphotericin B remains the backbone of treatment and was prescribed in 86% of these cases. The resulting mortality rate remains high (32%). We provide here the results of a literature review of mucormycosis in children, including its epidemiology and clinical manifestations, and describe current advances in its diagnosis and treatment.
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Affiliation(s)
- William R Otto
- Department of Pediatrics, Division of Infectious Diseases, Children's Hospital of Philadelphia, Pennsylvania
| | - Barbara A Pahud
- Department of Pediatrics, Division of Infectious Diseases, Children's Mercy, Kansas City, Missouri.,Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Missouri
| | - Dwight E Yin
- Department of Pediatrics, Division of Infectious Diseases, Children's Mercy, Kansas City, Missouri.,Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Missouri
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Animal Models to Study Mucormycosis. J Fungi (Basel) 2019; 5:jof5020027. [PMID: 30934788 PMCID: PMC6617025 DOI: 10.3390/jof5020027] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 12/11/2022] Open
Abstract
Mucormycosis is a rare but often fatal or debilitating infection caused by a diverse group of fungi. Animal models have been crucial in advancing our knowledge of mechanisms influencing the pathogenesis of mucormycoses, and to evaluate therapeutic strategies. This review describes the animal models established for mucormycosis, summarizes how they have been applied to study mucormycoses, and discusses the advantages and limitations of the different model systems.
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6
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Ramirez-Garcia A, Pellon A, Rementeria A, Buldain I, Barreto-Bergter E, Rollin-Pinheiro R, de Meirelles JV, Xisto MIDS, Ranque S, Havlicek V, Vandeputte P, Govic YL, Bouchara JP, Giraud S, Chen S, Rainer J, Alastruey-Izquierdo A, Martin-Gomez MT, López-Soria LM, Peman J, Schwarz C, Bernhardt A, Tintelnot K, Capilla J, Martin-Vicente A, Cano-Lira J, Nagl M, Lackner M, Irinyi L, Meyer W, de Hoog S, Hernando FL. Scedosporium and Lomentospora: an updated overview of underrated opportunists. Med Mycol 2018. [PMID: 29538735 DOI: 10.1093/mmy/myx113] [Citation(s) in RCA: 177] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Species of Scedosporium and Lomentospora are considered as emerging opportunists, affecting immunosuppressed and otherwise debilitated patients, although classically they are known from causing trauma-associated infections in healthy individuals. Clinical manifestations range from local infection to pulmonary colonization and severe invasive disease, in which mortality rates may be over 80%. These unacceptably high rates are due to the clinical status of patients, diagnostic difficulties, and to intrinsic antifungal resistance of these fungi. In consequence, several consortia have been founded to increase research efforts on these orphan fungi. The current review presents recent findings and summarizes the most relevant points, including the Scedosporium/Lomentospora taxonomy, environmental distribution, epidemiology, pathology, virulence factors, immunology, diagnostic methods, and therapeutic strategies.
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Affiliation(s)
- Andoni Ramirez-Garcia
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Aize Pellon
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Aitor Rementeria
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Idoia Buldain
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | | | | | | | | | - Stephane Ranque
- Laboratoire de Parasitologie-Mycologie, AP-HM / CHU Timone, Marseille, France
| | - Vladimir Havlicek
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Patrick Vandeputte
- Laboratoire de Parasitologie-Mycologie, CHU, Angers, France.,Host-Pathogen Interaction Study Group (EA 3142), UNIV Angers, UNIV Brest, Angers, France
| | - Yohann Le Govic
- Laboratoire de Parasitologie-Mycologie, CHU, Angers, France.,Host-Pathogen Interaction Study Group (EA 3142), UNIV Angers, UNIV Brest, Angers, France
| | - Jean-Philippe Bouchara
- Laboratoire de Parasitologie-Mycologie, CHU, Angers, France.,Host-Pathogen Interaction Study Group (EA 3142), UNIV Angers, UNIV Brest, Angers, France
| | - Sandrine Giraud
- Host-Pathogen Interaction Study Group (EA 3142), UNIV Angers, UNIV Brest, Angers, France
| | - Sharon Chen
- Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR, Westmead Hospital, The University of Sydney, New South Wales, Australia
| | - Johannes Rainer
- Institute of Microbiology, Leopold-Franzens University Innsbruck, Austria
| | - Ana Alastruey-Izquierdo
- Mycology Reference Laboratory, National Centre for Microbiology. Instituto de Salud Carlos III. Majadahonda, Madrid, Spain
| | | | | | - Javier Peman
- Microbiology Department, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Carsten Schwarz
- Cystic Fibrosis Centre Berlin/Charité-Universitätsmedizin Berlin, Germany
| | - Anne Bernhardt
- Mycotic and Parasitic Agents and Mycobacteria, Robert Koch Institute, Berlin, Germany
| | - Kathrin Tintelnot
- Mycotic and Parasitic Agents and Mycobacteria, Robert Koch Institute, Berlin, Germany
| | - Javier Capilla
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Adela Martin-Vicente
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili, Reus, Spain.,Department of Clinical Pharmacy and Translational Science, University of Tennessee Health Science Center, Memphis, TN USA
| | - Jose Cano-Lira
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Markus Nagl
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Lackner
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Laszlo Irinyi
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Westmead Clinical School, Sydney Medical School - Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Westmead Institute for Medical Research, Sydney, New South Wales, Australia
| | - Wieland Meyer
- Molecular Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology, Westmead Clinical School, Sydney Medical School - Westmead Hospital, Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Westmead Institute for Medical Research, Sydney, New South Wales, Australia
| | - Sybren de Hoog
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - Fernando L Hernando
- Fungal and Bacterial Biomics Research Group, Department of Immunology, Microbiology and Parasitology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
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7
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García J, Pemán J. [Microbiological diagnosis of invasive mycosis]. Rev Iberoam Micol 2018; 35:179-185. [PMID: 30471895 DOI: 10.1016/j.riam.2018.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/11/2018] [Accepted: 05/08/2018] [Indexed: 11/17/2022] Open
Abstract
The prognosis of invasive fungal infections (IFI) depends on the speed of diagnosis and treatment. Conventional diagnostic methods are of low sensitivity, laborious and too slow, leading to the need for new, faster, and more efficient diagnostic strategies. There are several techniques for diagnosing a candidemia that are faster than the conventional blood culture (BC). Once yeast growth in BC is detected, species identification can be speeded up by mass spectrometry (30minutes), commercialised molecular techniques (60-80minutes) or fluorescent in situ hybridization (90minutes). The combined detection of biomarkers (antimicellium, mannan and anti-mannan or β-glucan) has shown to be of greater use than their individual use. Commercialised nucleic acid amplification techniques (Septifast®, T2Candida®) are very reliable alternatives to BC. The detection of the capsular antigen of Cryptococcus, by means of latex agglutination or immuno-chromatography, is a valuable technique for cryptococcosis diagnosis. Direct microscopic examination and culture of representative specimens is used for the conventional diagnosis of IFI by filamentous fungi. Detection of galactomannan and β-glucan are considered diagnostic criteria for probable invasive aspergillosis and probable IFI, respectively, despite the lack of specificity of the latter. The detection of fungal volatile organic compounds in breath is an interesting diagnostic strategy in pulmonary infections. Although widely used, nucleic acid detection techniques are not considered diagnostic criteria for IFIs caused by moulds in consensus documents, due to their lack of standardisation. However, they are the only alternative to culture methods in invasive infections by Scedosporium/Lomentospora, Fusarium, zygomycetes, or dematiaceous fungi.
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Affiliation(s)
- Julio García
- Servicio de Microbiología, Hospital Universitario La Paz, Madrid, España
| | - Javier Pemán
- Servicio de Microbiología, Hospital Universitari i Politècnic La Fe, Valencia, España.
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8
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Abstract
Fungal diseases became a major medical problem in the second half of the 20th century when advances in modern medicine together with the HIV epidemic resulted in large numbers of individuals with impaired immunity. Fungal diseases are difficult to manage because they tend to be chronic, hard to diagnose, and difficult to eradicate with antifungal drugs. This essay considers the future of medical mycology in the 21st century, extrapolating from current trends. In the near horizon, the prevalence of fungal diseases is likely to increase, as there will be more hosts with impaired immunity and drug resistance will inevitably increase after selection by antifungal drug use. We can expect progress in the development of new drugs, diagnostics, vaccines, and immunotherapies. In the far horizon, humanity may face new fungal diseases in association with climate change. Some current associations between chronic diseases and fungal infections could lead to the establishment of fungi as causative agents, which will greatly enhance their medical importance. All trends suggest that the importance of fungal diseases will increase in the 21st century, and enhanced human preparedness for this scourge will require more research investment in this group of infectious diseases.
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Affiliation(s)
- Arturo Casadevall
- Department of Molecular Microbiology and Immunology, The Johns Hopkins School of Public Health, Baltimore, Maryland
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9
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Denis J, Forouzanfar F, Herbrecht R, Toussaint E, Kessler R, Sabou M, Candolfi E, Letsher-Bru V. Evaluation of Two Commercial Real-Time PCR Kits for Aspergillus DNA Detection in Bronchoalveolar Lavage Fluid in Patients with Invasive Pulmonary Aspergillosis. J Mol Diagn 2018; 20:298-306. [PMID: 29471112 PMCID: PMC7185652 DOI: 10.1016/j.jmoldx.2017.12.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 12/21/2017] [Accepted: 12/22/2018] [Indexed: 02/07/2023] Open
Abstract
Invasive pulmonary aspergillosis (IPA) is a common complication of immunosuppression. Rapid diagnosis using molecular techniques is essential to improve patient survival. PCR techniques are promising in enhancing Aspergillus detection in blood and respiratory samples. We evaluate for the first time the performances of two commercial real-time PCR kits, the A. fumigatus Bio-Evolution and the MycoGENIE A. fumigatus for the detection of A. fumigatus DNA in bronchoalveolar lavage (BAL) from patients with and without IPA. Seventy-three BAL samples were included. Thirty-one of them corresponded to patients with probable IPA, 11 to patients with possible IPA, and 31 to patients without aspergillosis, according to the 2008 European Organization for Research and Treatment of Cancer/Mycoses Study Group criteria. In the probable IPA group, A. fumigatus Bio-Evolution and the MycoGENIE A. fumigatus real-time PCR kits showed a specificity of 100% and a sensitivity of 81% and 71%, respectively. The A. fumigatus Bio-Evolution detected Aspergillus DNA in the 14 BAL samples with a positive Aspergillus culture result, whereas the MycoGENIE A. fumigatus PCR result was positive only for 12. In the possible IPA group, there were no positive real-time PCR or positive Aspergillus culture results. For the patients without aspergillosis, no positive result was observed for real-time PCR kit, despite the presence of various other non-Aspergillus pathogens in this group. Our study demonstrates an excellent specificity and a good sensitivity of A. fumigatus DNA detection in BAL samples with both kits.
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Affiliation(s)
- Julie Denis
- Laboratoire de Parasitologie et de Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
| | - Faezeh Forouzanfar
- Laboratoire de Parasitologie et de Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Institut de Parasitologie et de Pathologie Tropicale, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Raoul Herbrecht
- Service d'Oncologie et d'Hématologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg & Université de Strasbourg, Strasbourg, France
| | - Elise Toussaint
- Service d'Oncologie et d'Hématologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg & Université de Strasbourg, Strasbourg, France
| | - Romain Kessler
- Pôle Pathologie thoracique, CHU de Strasbourg, Strasbourg, France
| | - Marcela Sabou
- Laboratoire de Parasitologie et de Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Ermanno Candolfi
- Laboratoire de Parasitologie et de Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Valérie Letsher-Bru
- Laboratoire de Parasitologie et de Mycologie Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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10
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Abstract
In the expanding population of immunocompromised patients and those treated in intensive care units, rare fungal infectious agents have emerged as important pathogens, causing invasive infections associated with high morbidity and mortality. These infections may present either as de novo or as breakthrough invasive infections in high-risk patients with hematologic malignancies receiving prophylactic or empirical antifungal therapy or in patients with central venous catheters. Diagnosis and treatment are challenging. Physicians should have a high index of suspicion because early diagnosis is of paramount importance. Conventional diagnostic methods such as cultures and histopathology are still essential, but rapid and more specific molecular techniques for both detection and identification of the infecting pathogens are being developed and hopefully will lead to early targeted treatment. The management of invasive fungal infections is multimodal. Reversal of risk factors, if feasible, should be attempted. Surgical debridement is recommended in localized mold infections. The efficacy of various antifungal drugs is not uniform. Amphotericin B is active against most yeasts, except Trichosporon, as well as against Mucorales, Fusarium, and some species of Paecilomyces and dimorphic fungi. The use of voriconazole is suggested for the treatment of trichosporonosis and scedosporiosis. Combination treatment, though recommended as salvage therapy in some infections, is controversial in most cases. Despite the use of available antifungals, mortality remains high. The optimization of molecular-based techniques, with expansion of reference libraries and the possibility for direct detection of resistance mechanisms, is awaited with great interest in the near future. Further research is necessary, however, in order to find the best ways to confront and destroy these lurking enemies.
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Affiliation(s)
- Anna Skiada
- 1st Department of Medicine, Laiko Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Maria Drogari-Apiranthitou
- Infectious Diseases Research Laboratory, 4th Department of Internal Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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11
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Schelm S, Haase I, Fischer C, Fischer M. Development of a Multiplex Real-Time PCR for Determination of Apricot in Marzipan Using the Plexor System. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:516-522. [PMID: 27943676 DOI: 10.1021/acs.jafc.6b04457] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Marzipan is a confectionary which is mostly offered in form of filled chocolate, pralines, or pure. According to the German guidelines for oil seeds only almonds, sugar and water are admitted ingredients of marzipan. A product very similar in taste is persipan which is used in the confectionary industry because of its stronger flavor. For persipan production almonds are replaced by debittered apricot or peach kernels. To guarantee high quality products for consumers, German raw paste producers have agreed a limit of apricot kernels in marzipan raw paste of 0.5%. Different DNA-based methods for quantitation of persipan contaminations in marzipan are already published. To increase the detection specificity compared to published intercalation dye-based assays, the present work demonstrate the utilization of a multiplex real-time PCR based on the Plexor technology. Thus, the present work enables the detection of at least 0.1% apricot DNA in almond DNA or less. By analyzing DNA mixtures, the theoretical limit of quantification of the duplex PCR for the quantitation of persipan raw paste DNA in marzipan raw paste DNA was determined as 0.05%.
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Affiliation(s)
- Stefanie Schelm
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
| | - Ilka Haase
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
| | - Christin Fischer
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
| | - Markus Fischer
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
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van Diepeningen AD, Brankovics B, Iltes J, van der Lee TAJ, Waalwijk C. Diagnosis of Fusarium Infections: Approaches to Identification by the Clinical Mycology Laboratory. CURRENT FUNGAL INFECTION REPORTS 2015; 9:135-143. [PMID: 26301000 PMCID: PMC4537702 DOI: 10.1007/s12281-015-0225-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Infections caused by the genus Fusarium have emerged over the past decades and range from onychomycosis and keratitis in healthy individuals to deep and disseminated infections with high mortality rates in immune-compromised patients. As antifungal susceptibility can differ between the different Fusarium species, identification at species level is recommended. Several clinical observations as hyaline hyphae in tissue, necrotic lesions in the skin and positive blood tests with fungal growth or presence of fungal cell wall components may be the first hints for fusariosis. Many laboratories rely on morphological identification, but especially multi-locus sequencing proves better to discriminate among members of the species complexes involved in human infection. DNA-based diagnostic tools have best discriminatory power when based on translation elongation factor 1-α or the RNA polymerase II second largest subunit. However, assays based on the detection of other fusarial cell compounds such as peptides and cell wall components may also be used for identification. The purpose of this review is to provide an overview and a comparison of the different tools currently available for the diagnosis of fusariosis.
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Affiliation(s)
| | - Balázs Brankovics
- />CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
- />Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Jearidienne Iltes
- />CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Theo A. J. van der Lee
- />Plant Research International Wageningen UR, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Cees Waalwijk
- />Plant Research International Wageningen UR, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
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Walsh TJ, Skiada A, Cornely OA, Roilides E, Ibrahim A, Zaoutis T, Groll A, Lortholary O, Kontoyiannis DP, Petrikkos G. Development of new strategies for early diagnosis of mucormycosis from bench to bedside. Mycoses 2015; 57 Suppl 3:2-7. [PMID: 25475924 DOI: 10.1111/myc.12249] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Early diagnosis and initiation of amphotericin B (AmB) for treatment of mucormycosis increases survival from approximately 40% to 80%. The central objective of a new study of the European Confederation of Medical Mycology (ECMM) and the International Society for Human and Animal Mycology (ISHAM) Zygomycosis Working Group is to improve the clinical and laboratory diagnosis of mucormycosis. The diagnostic tools generated from this study may help to significantly improve survival from mucormycosis worldwide. The study has three major objectives: to conduct a prospective international registration of patients with mucormycosis using a well-established global network of centres; to construct a predictive risk model for patients at risk for mucormycosis; and to establish an international archive of specimens of tissues, fluids, and organisms linked from the patients enrolled into the registry that will be used for development of leading edge molecular, proteomic, metabolic and antigenic systems for mucormycosis.
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Affiliation(s)
- Thomas J Walsh
- Henry Schueler Foundation Scholar in Mucormycosis, Transplantation-Oncology Infectious Diseases Program, Infectious Diseases Translational Research Laboratory, Departments of Medicine, Pediatrics, and Microbiology and Immunology, Weill Cornell Medical Center of Cornell University, New York, NY, USA
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