1
|
Janani RS, Xess I, Das BK, Cs S, Bordoloi T, Pandey M, Ahmed J, Singh G. Invasive aspergillosis due to cryptic Aspergillus species: A prospective study from a single centre in India. Indian J Med Microbiol 2024; 51:100708. [PMID: 39178991 DOI: 10.1016/j.ijmmb.2024.100708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 08/18/2024] [Accepted: 08/20/2024] [Indexed: 08/26/2024]
Abstract
BACKGROUND & objective: The existence of visually identical cryptic Aspergillus species that can be distinguished only by molecular techniques is becoming more widely acknowledged. For the majority of antifungal drugs, these are known to exhibit a greater minimal inhibitory concentration in vitro. For the purpose of receiving the proper care, it is crucial to identify these species at right time. Our aim in this work is to identify and describe the Aspergillus species that are cryptic from all of the clinical samples. METHODS Routine samples from inpatients and outpatients received in department of Microbiology, All India Institute of Medical Sciences, New Delhi, showing growth of Aspergillus species were included in this study. Phenotypic and Matrix Assisted Laser Desorption Ionisation - Time of Flight identified isolates were analysed for cryptic species, by PCR and ITS/ß - tubulin sequencing. In accordance with CLSI recommendations, antifungal susceptibility testing was conducted using micro broth dilution. RESULTS Of the 94 isolates, 54 A. fumigatus, 34 A. flavus, 3 A. nidulans, 2 A. terreus, and 1 A. niger were morphologically identified. MALDI-TOF misidentified 2 A. nidulans isolates and 1 A, stellatus isolate. The ß - tubulin sequence analysis revealed that 2 isolates (2.08 %) were cryptic, one was A. stellatus and another one was A. tubingensis.
Collapse
Affiliation(s)
- R Sruti Janani
- All India Institute of Medical Sciences, New Delhi, India.
| | | | | | - Saumya Cs
- All India Institute of Medical Sciences, New Delhi, India.
| | | | | | - Jaweed Ahmed
- All India Institute of Medical Sciences, New Delhi, India.
| | | |
Collapse
|
2
|
Geremia N, Giovagnorio F, Colpani A, De Vito A, Caruana G, Meloni MC, Madeddu G, Panese S, Parisi SG. What do We Know about Cryptic Aspergillosis? Microorganisms 2024; 12:886. [PMID: 38792716 PMCID: PMC11124275 DOI: 10.3390/microorganisms12050886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/26/2024] Open
Abstract
Cryptic Aspergillus species are increasingly recognized as pathogens involved in human disease. They are ubiquitarian fungi with high tenacity in their environment and can express various resistance mechanisms, often due to exposure to antifungal agents employed in agriculture and farming. The identification of such species is increasing thanks to molecular techniques, and a better description of this type of pathogen is granted. Nevertheless, the number of species and their importance in the clinical setting still need to be well studied. Furthermore, their cross-sectional involvement in animal disease, plants, and human activities requires a multidisciplinary approach involving experts from various fields. This comprehensive review aims to provide a sharp vision of the cryptic Aspergillus species, from the importance of correct identification to the better management of the infections caused by these pathogens. The review also accentuates the importance of the One Health approach for this kind of microorganism, given the interconnection between environmental exposure and aspergillosis, embracing transversely the multidisciplinary process for managing the cryptic Aspergillus species. The paper advocates the need for improving knowledge in this little-known species, given the burden of economic and health implications related to the diffusion of these bugs.
Collapse
Affiliation(s)
- Nicholas Geremia
- Unit of Infectious Diseases, Department of Clinical Medicine, Ospedale Dell’Angelo, 30174 Venice, Italy;
- Unit of Infectious Diseases, Department of Clinical Medicine, Ospedale Civile “S.S. Giovanni e Paolo”, 30122 Venice, Italy
| | - Federico Giovagnorio
- Department of Molecular Medicine, University of Padua, 35121 Padua, Italy; (F.G.); (S.G.P.)
| | - Agnese Colpani
- Unit of Infectious Diseases, Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.C.); (A.D.V.); (M.C.M.); (G.M.)
| | - Andrea De Vito
- Unit of Infectious Diseases, Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.C.); (A.D.V.); (M.C.M.); (G.M.)
- Biomedical Science Department, School in Biomedical Science, University of Sassari, 07100 Sassari, Italy
| | - Giorgia Caruana
- Department of Laboratory Medicine and Pathology, Institute of microbiology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland;
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Maria Chiara Meloni
- Unit of Infectious Diseases, Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.C.); (A.D.V.); (M.C.M.); (G.M.)
| | - Giordano Madeddu
- Unit of Infectious Diseases, Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy; (A.C.); (A.D.V.); (M.C.M.); (G.M.)
| | - Sandro Panese
- Unit of Infectious Diseases, Department of Clinical Medicine, Ospedale Dell’Angelo, 30174 Venice, Italy;
- Unit of Infectious Diseases, Department of Clinical Medicine, Ospedale Civile “S.S. Giovanni e Paolo”, 30122 Venice, Italy
| | | |
Collapse
|
3
|
Borman AM, Johnson EM. Changes in fungal taxonomy: mycological rationale and clinical implications. Clin Microbiol Rev 2023; 36:e0009922. [PMID: 37930182 PMCID: PMC10732072 DOI: 10.1128/cmr.00099-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/13/2023] [Indexed: 11/07/2023] Open
Abstract
Numerous fungal species of medical importance have been recently subjected to and will likely continue to undergo nomenclatural changes as a result of the application of molecular approaches to fungal classification together with abandonment of dual nomenclature. Here, we summarize those changes affecting key groups of fungi of medical importance, explaining the mycological (taxonomic) rationale that underpinned the changes and the clinical relevance/importance (where such exists) of the key nomenclatural revisions. Potential mechanisms to mitigate unnecessary taxonomic instability are suggested, together with approaches to raise awareness of important changes to minimize potential clinical confusion.
Collapse
Affiliation(s)
- Andrew M. Borman
- UK HSA National Mycology Reference Laboratory, Science Quarter, Southmead Hospital, Bristol, United Kingdom
- Medical Research Council Centre for Medical Mycology (MRC CMM), University of Exeter, Exeter, United Kingdom
| | - Elizabeth M. Johnson
- UK HSA National Mycology Reference Laboratory, Science Quarter, Southmead Hospital, Bristol, United Kingdom
- Medical Research Council Centre for Medical Mycology (MRC CMM), University of Exeter, Exeter, United Kingdom
| |
Collapse
|
4
|
Amirizad K, Ghazanfari M, Javidnia J, Abastabar M, Haghi Ashtiani MT, Sotoudeh Anvari M, Fathi M, Espahbodi A, Badali H, Hedayati MT, Haghani I, Seyedmousavi S. Central nervous system Aspergillus quadrilineatus infection in a COVID-19 patient, a case report and literature review. J Clin Lab Anal 2023; 37:e24971. [PMID: 37798858 PMCID: PMC10681513 DOI: 10.1002/jcla.24971] [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: 06/14/2023] [Revised: 08/28/2023] [Accepted: 09/24/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Viral pneumonia such as COVID-19-associated aspergillosis could increase susceptibility to fungal super-infections in critically ill patients. METHODS Here we report a pediatric case of Aspergillus quadrilineatus cerebral infection in a recently diagnosed COVID-19-positive patient underlying acute lymphocytic leukemia. Morphological, molecular methods, and sequencing were used to identify this emerging species. RESULTS Histopathological examination showed a granulomatous necrotic area containing dichotomously branching septate hyphae indicating a presumptive Aspergillus structure. The species-level identity of isolate growing on brain biopsy culture was confirmed by PCR sequencing of the β-tubulin gene as A. quadrilineatus. Using the CLSI M38-A3 broth microdilution methodology, the in vitro antifungal susceptibility testing demonstrated 0.032 μg/mL MIC for posaconazole, caspofungin, and anidulafungin and 8 μg/mL against amphotericin B. A combination of intravenous liposomal amphotericin B and caspofungin therapy for 8 days did not improve the patient's condition. The patient gradually continued to deteriorate and expired. CONCLUSIONS This is the first COVID-19-associated cerebral aspergillosis due to A. quadrilineatus in a pediatric patient with acute lymphocytic leukemia. However, comprehensive screening studies are highly recommended to evaluate its frequency and antifungal susceptibility profiles. Before being recommended as first-line therapy in high-risk patients, more antifungal susceptibility data are needed.
Collapse
Affiliation(s)
- Kazem Amirizad
- Department of Mycology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Mona Ghazanfari
- Department of Medical Mycology, School of MedicineMazandaran University of Medical SciencesSariMazandaranIran
- Invasive Fungi Research Center, Communicable Diseases InstituteMazandaran University of Medical SciencesSariIran
| | - Javad Javidnia
- Department of Medical Mycology, School of MedicineMazandaran University of Medical SciencesSariMazandaranIran
- Invasive Fungi Research Center, Communicable Diseases InstituteMazandaran University of Medical SciencesSariIran
| | - Mahdi Abastabar
- Department of Medical Mycology, School of MedicineMazandaran University of Medical SciencesSariMazandaranIran
- Invasive Fungi Research Center, Communicable Diseases InstituteMazandaran University of Medical SciencesSariIran
| | | | - Maryam Sotoudeh Anvari
- Department of Surgical and Clinical Pathology, Cardiac Research, Tehran Heart CenterTehran University of Medical Sciences; TehranIran
| | - Maryam Fathi
- Department of Parasitology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Amirreza Espahbodi
- Student Research Committee, School of MedicineMazandaran University of Medical SciencesSariMazandaranIran
| | - Hamid Badali
- Department of Molecular Microbiology & Immunology, South Texas Center for Emerging Infectious DiseasesThe University of Texas at San AntonioSan AntonioTexasUSA
| | - Mohammad Taghi Hedayati
- Department of Medical Mycology, School of MedicineMazandaran University of Medical SciencesSariMazandaranIran
- Invasive Fungi Research Center, Communicable Diseases InstituteMazandaran University of Medical SciencesSariIran
| | - Iman Haghani
- Department of Medical Mycology, School of MedicineMazandaran University of Medical SciencesSariMazandaranIran
- Invasive Fungi Research Center, Communicable Diseases InstituteMazandaran University of Medical SciencesSariIran
| | - Seyedmojtaba Seyedmousavi
- Department of Laboratory Medicine, Microbiology Service, Clinical CenterNational Institutes of HealthBethesdaMarylandUSA
| |
Collapse
|
5
|
Lee KH, Won D, Kim J, Lee JA, Kim CH, Kim JH, Jeong SJ, Ku NS, Choi JY, Yeom JS, Cho H, Chung H, Cheong JW, Lee ST, Jang JE, Shin S, Ahn JY. Utility of Plasma Microbial Cell-Free DNA Whole-Genome Sequencing for Diagnosis of Invasive Aspergillosis in Patients With Hematologic Malignancy or COVID-19. J Infect Dis 2023; 228:444-452. [PMID: 37317030 DOI: 10.1093/infdis/jiad213] [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: 01/26/2023] [Revised: 05/25/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND We evaluated the clinical accuracy and utility of whole-genome sequencing (WGS) of plasma microbial cell-free DNA (cfDNA) as a novel noninvasive method in diagnosing invasive aspergillosis (IA) in patients with hematologic malignancy (HM) or coronavirus disease 2019 (COVID-19). METHODS Adults with HM or COVID-19 and suspected IA were recruited. IA cases were retrospectively diagnosed according to EORTC/MSG definitions and ECMM/ISHAM criteria for HM and COVID-19 patients, respectively. The results of cfDNA WGS were compared with the conventional diagnosis. RESULTS Microbial cfDNA WGS was performed 53 times from 41 participants (19 from HM, 16 from COVID-19, and 7 from the control group). In participants with HM, Aspergillus cfDNA was detected in 100% of proven IA and 91.7% of probable IA cases. In participants with COVID-19, 50.0% of probable IA were positive for Aspergillus in cfDNA WGS. Concordance between Aspergillus cfDNA detection and proven/probable IA conventional diagnosis was significantly higher in participants with HM than in those with COVID-19. IA diagnosed using EORTC/MGS definitions showed significantly high concordance between Aspergillus cfDNA detection and proven/probable IA. CONCLUSIONS Aspergillus cfDNA detection strongly correlated with proven/probable IA diagnosed using EORTC/MSG definitions and could be used as an additional diagnostic tool for IA.
Collapse
Affiliation(s)
- Ki Hyun Lee
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Dongju Won
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jinnam Kim
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Ah Lee
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Chang Hyup Kim
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Ho Kim
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Su Jin Jeong
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Nam Su Ku
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jun Yong Choi
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Joon-Sup Yeom
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyunsoo Cho
- Division of Hematology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - Haerim Chung
- Division of Hematology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - June-Won Cheong
- Division of Hematology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - Seung-Tae Lee
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Eun Jang
- Division of Hematology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - Saeam Shin
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Young Ahn
- Division of Infectious Diseases, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| |
Collapse
|
6
|
Khojasteh S, Abastabar M, Haghani I, Valadan R, Ghazanfari S, Abbasi K, Ahangarkani F, Zarrinfar H, Khodavaisy S, Badali H. Five-year surveillance study of clinical and environmental Triazole-Resistant Aspergillus fumigatus isolates in Iran. Mycoses 2023; 66:98-105. [PMID: 36196507 DOI: 10.1111/myc.13535] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND Invasive aspergillosis is one of the most common fungal infections and azole resistance in Aspergillus fumigatus (ARAf) is a growing medical concern in high-risk patients. To our knowledge, there is no comprehensive epidemiological surveillance study on the prevalence and incidence of ARAf isolates available in Iran. OBJECTIVES The study aimed to report a five-year survey of triazole phenotypes and genotype patterns concerning the resistance in clinical and environmental A. fumigatus in Iran. METHODS During the study time frame (2016-2021), a total of 1208 clinical and environmental Aspergillus species were collected. Isolates were examined and characterised by in vitro antifungal susceptibility testing (CLSI M38 broth microdilution) and cyp51A sequencing. RESULTS In total, 485 Aspergillus section Fumigati strains were recovered (clinical, n = 23; 4.74% and environment, n = 462; 95.26%). Of which A. fumigatus isolates were the most prevalent species (n = 483; 99.59%). Amphotericin B and the echinocandins demonstrated good in vitro activity against the majority of isolates in comparison to triazole. Overall, 16.15% (n = 78) of isolates were phenotypically resistant to at least one of the azoles. However, 9.73% of A. fumigatus isolates for voriconazole were classified as resistant, 89.03% were susceptible, and 1.24% were intermediate. While, for itraconazole and posaconazole, using the epidemiological cut-off value 16.15% and 6.83% of isolates were non-wild types, respectively. Remarkably, in 21.79% (n = 17) phenotypically resistant isolates, no mutations were detected within the cyp51A gene. CONCLUSION Although the incidence of ARAf varies from country to country, in Iran the rate has ranged from 3.3% to 18%, significantly increasing from 2013 to 2021. Strikingly, a quarter of the phenotypically resistant isolates harboured no mutations in the cyp51A gene. It seems that other mechanisms of resistance are importantly increasing. To fill a gap in our understanding of the mechanism for azole resistance in the non-cyp51A strains, we highly recommend further and more extensive monitoring of the soil with or without exposure to fungicides in agricultural and hospital areas.
Collapse
Affiliation(s)
- Shaghayegh Khojasteh
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahdi Abastabar
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Iman Haghani
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Reza Valadan
- Department of Immunology, Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sahar Ghazanfari
- Department of Medical Mycology and Parasitology, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Kiana Abbasi
- Department of Microbiology, Zanjan Branch, Islamic Azad University, Zanjan, Iran
| | - Fatemeh Ahangarkani
- Antimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hossein Zarrinfar
- Department of Parasitology and Mycology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sadegh Khodavaisy
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Badali
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Molecular Microbiology & Immunology, South Texas Center for Emerging Infectious Diseases, The University of Texas at San Antonio, San Antonio, Texas, USA
| |
Collapse
|
7
|
A Multiplex PCR and DNA-Sequencing Workflow on Serum for the Diagnosis and Species Identification for Invasive Aspergillosis and Mucormycosis. J Clin Microbiol 2023; 61:e0140922. [PMID: 36533925 PMCID: PMC9879116 DOI: 10.1128/jcm.01409-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
There has been significant increase in the use of molecular tools for the diagnosis of invasive aspergillosis (IA) and mucormycosis. However, their range of detection may be too limited as species diversity and coinfections are increasing. Here, we aimed to evaluate a molecular workflow based on a new multiplex PCR assay detecting the whole Aspergillus genus and the Mucorales order followed by a species-specific PCR or a DNA-sequencing approach for IA and/or mucormycosis diagnosis and species identification on serum. Performances of the MycoGENIE Aspergillus spp./Mucorales spp. duplex PCR kit were analyzed on a broad range of fungal strains and on sera from high-risk patients prospectively over a 12-month period. The kit allowed the detection of nine Aspergillus species and 10 Mucorales (eight genera) strains assessed. No cross-reactions between the two targets were observed. Sera from 744 patients were prospectively analyzed, including 35 IA, 16 mucormycosis, and four coinfections. Sensitivity varies from 85.7% (18/21) in probable/proven IA to 28.6% (4/14) in COVID-19-associated pulmonary aspergillosis. PCR-positive samples corresponded to 21 A. fumigatus, one A. flavus, and one A. nidulans infections. All the disseminated mucormycosis were positive in serum (14/14), including the four Aspergillus coinfections, but sensitivity fell to 33.3% (2/6) in localized forms. DNA sequencing allowed Mucorales identification in serum in 15 patients. Remarkably, the most frequent species identified was Rhizomucor pusillus (eight cases), whereas it is barely found in fungal culture. This molecular workflow is a promising approach to improve IA and mucormycosis diagnosis and epidemiology.
Collapse
|
8
|
Kidd SE, Abdolrasouli A, Hagen F. Fungal Nomenclature: Managing Change is the Name of the Game. Open Forum Infect Dis 2023; 10:ofac559. [PMID: 36632423 PMCID: PMC9825814 DOI: 10.1093/ofid/ofac559] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/18/2022] [Indexed: 01/09/2023] Open
Abstract
Fungal species have undergone and continue to undergo significant nomenclatural change, primarily due to the abandonment of dual species nomenclature in 2013 and the widespread application of molecular technologies in taxonomy allowing correction of past classification errors. These have effected numerous name changes concerning medically important species, but by far the group causing most concern are the Candida yeasts. Among common species, Candida krusei, Candida glabrata, Candida guilliermondii, Candida lusitaniae, and Candida rugosa have been changed to Pichia kudriavzevii, Nakaseomyces glabrata, Meyerozyma guilliermondii, Clavispora lusitaniae, and Diutina rugosa, respectively. There are currently no guidelines for microbiology laboratories on implementing changes, and there is ongoing concern that clinicians will dismiss or misinterpret laboratory reports using unfamiliar species names. Here, we have outlined the rationale for name changes across the major groups of clinically important fungi and have provided practical recommendations for managing change.
Collapse
Affiliation(s)
- Sarah E Kidd
- Correspondence: Sarah E. Kidd, BMedSc(Hons), PhD , National Mycology Reference Centre, SA Pathology, Frome Road, Adelaide, South Australia 5000, Australia ()
| | - Alireza Abdolrasouli
- Department of Medical Microbiology, King's College Hospital, London, United Kingdom,Department of Infectious Diseases, Imperial College London, London, United Kingdom
| | - Ferry Hagen
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands,Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands,Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| |
Collapse
|
9
|
Markelov VV, Rogacheva YA, Popova MO, Volkova AG, Nikolaev IY, Pinegina ON, Spididonova AA, Ignatieva SM, Bogomolova TS, Goloshchapov OV, Vlasova YY, Morozova EV, Vladovskaya MD, Bondarenko SN, Klimko NN, Kulagin AD. Invasive aspergillosis caused by <i>Aspergillus non-fumigatus</i> after allogeneic hematopoietic stem cell transplantation. JOURNAL INFECTOLOGY 2022. [DOI: 10.22625/2072-6732-2022-14-5-5-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Objective. To study the features of invasive aspergillosis (IA) due to A. non-fumigatus versus A. fumigatus in adult (≥ 18 years) recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT) in 2016-2021. Materials and methods. The study included 33 patients with IA caused by A. non-fumigatus (n = 20) and A. fumigatus (n = 13). A comparative analysis of cases of IA, the results of therapy and outcomes in patients after allo-HSCT in the RM Gorbacheva Research Institute was performed. Diagnostic criteria EORTC / MSGERC 2020 were used. Results. Invasive aspergillosis caused by A. non-fumigatus made up the majority (60.6 %) of IA cases with an identified pathogen registered in patients after allo-HSCT in the period from 2016 to 2021. The main etiological agents in the A. non-fumigatus group were A. niger in 13 (65 %) patients, A. flavus – in 4 (20 %). The median day of diagnosis of A. non-fumigatus IAwas + 110 days (17–2093), for A. fumigatus it was + 46 days (2–866) (p = 0.171). Overall 12-week survival was 55 % and 59.2 % in the A. non-fumigatus and A. fumigatus groups, respectively (p = 0.617). The majority of patients in both the A. fumigatus (n = 10, 77 %) and A. non-fumigatus (n = 16, 80 %) groups received voriconazole as initial antifungal therapy. Second-linetherapy was required in 2 (10 %) patients with A. non-fumigatus IA: liposomal amphotericin B and echinocandins with or with-out posaconazole, and 2 (15 %) patients in the A. fumigatus group: liposomal amphotericin B and voriconazole in combination with echinocandins. A comparative analysis showed that in patients from the two groups, none of the assessed signs (gender, age, underlying disease, disease status at the time of transplantation, time from diagnosis to allo-HSCT, source of hematopoietic stem cells, conditioning regimen, donor type, antifungal prophylaxis, cytomegalovirus reactivation, severe acute and chronic graft-versus-host disease) did not differ significantly. Conclusions. A. niger is the main causative agent of IA caused by A. non-fumigatus. Patients characteristics, their treatment and outcomes did not differ significantly between the A. non-fumigatus and A. fumigatus groups.
Collapse
Affiliation(s)
- V. V. Markelov
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - Yu. A. Rogacheva
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - M. O. Popova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - A. G. Volkova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - I. Yu. Nikolaev
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - O. N. Pinegina
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - A. A. Spididonova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - S. M. Ignatieva
- North-Western State Medical University named after I. I. Mechnikov
| | - T. S. Bogomolova
- North-Western State Medical University named after I. I. Mechnikov
| | - O. V. Goloshchapov
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - Yu. Yu. Vlasova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - E. V. Morozova
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - M. D. Vladovskaya
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - S. N. Bondarenko
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - N. N. Klimko
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| | - A. D. Kulagin
- First Saint-Petersburg State Medical University named after academician I. P. Pavlov
| |
Collapse
|
10
|
EUCAST-Obtained Olorofim MICs against Aspergillus and Scedosporium Species and Lomentospora prolificans Showed High Agreements between Visual Inspection and Spectrophotometric Readings. Antimicrob Agents Chemother 2022; 66:e0084922. [PMID: 35924916 PMCID: PMC9487512 DOI: 10.1128/aac.00849-22] [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] [Indexed: 02/06/2023] Open
Abstract
Previous studies show high agreement between MIC spectrophotometric readings and visual inspection of azoles and amphotericin B against Aspergillus fumigatus isolates. Here, we tested and compared the in vitro activity of a novel antifungal, olorofim, against Aspergillus spp., Scedosporium spp., and Lomentospora prolificans by visual inspection and spectrophotometric readings. Clinical isolates of Aspergillus (n = 686) and Scedosporium (n = 36) spp. and L. prolificans (n = 13) were tested. Olorofim MICs were evaluated-following the EUCAST E.Def 9.4 procedure-by visual inspection or spectrophotometric readings (combinations of either ≥90% or ≥95% fungal growth inhibition endpoints compared to drug-free control endpoints and different wavelengths [405 nm, 450 nm, 492 nm, 540 nm, and 620 nm]). We observed high in vitro activity of olorofim against all tested Aspergillus spp. (MICs up to 0.06 mg/L), except for A. calidoustus, and against L. prolificans and Scedosporium spp. (MICs up to 0.125 mg/L). The combination of ≥90% fungal growth inhibition endpoints at wavelengths of ≥492 nm resulted in high essential agreements with A. fumigatus and lesser agreement with non-fumigatus Aspergillus, Scedosporium spp., and L. prolificans, although the number of isolates studied was low. This single-center study shows high agreement among olorofim MICs against A. fumigatus by visual inspection and spectrophotometric readings (≥90% fungal growth inhibition endpoints and wavelengths of ≥492 nm) and encouraging results against non-fumigatus Aspergillus spp., Scedosporium spp., and L. prolificans.
Collapse
|
11
|
Lian X, Scott-Thomas A, Lewis JG, Bhatia M, Chambers ST. A Novel Monoclonal Antibody 1D2 That Broadly Inhibits Clinically Important Aspergillus Species. J Fungi (Basel) 2022; 8:jof8090960. [PMID: 36135685 PMCID: PMC9502797 DOI: 10.3390/jof8090960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Aspergillus fumigatus is a ubiquitous airborne fungus, is the predominant cause (>90%) of invasive aspergillosis (IA) in immunosuppressed patients and has a high mortality. New approaches to prevention and treatment are needed because of the poor efficacy, toxicity and side effects of the current anti-Aspergillus drugs on patients. Thus, we aim to explore a new avenue to combat Aspergillus infection by using a novel monoclonal antibody (mAb) 1D2 against a glycoprotein on the cell wall of Aspergillus. The ability of this mAb to inhibit attachment, germination, and growth of Aspergillus conidia and hyphae in vitro were examined. A dose-dependent growth inhibition of Aspergillus conidia in the presence of mAb 1D2 was found. The mAb 1D2 inhibited attachment of Aspergillus conidia to an untreated slide surface and fibronectin-treated surface compared to an unrelated mAb 6B10. When conidia were exposed to 1D2 concomitantly with inoculation into culture media, the mAb prevented the swelling and germination of conidia. This inhibitory ability of 1D2 was less apparent if it was added two hours after inoculation. Damage to hyphae was also observed when 1D2 was added to Aspergillus hyphae that had been incubated in media overnight. These in vitro results indicate that mAb 1D2 broadly inhibits clinically important Aspergillus species and has a promising therapeutic effect both as prophylaxis to inhibit an Aspergillus infection as well as a treatment.
Collapse
Affiliation(s)
- Xihua Lian
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
- Department of Medical Imaging, The Second Clinical Medical School, Fujian Medical University, Quanzhou 362000, China
| | - Amy Scott-Thomas
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
| | - John G. Lewis
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
- Canterbury Health Laboratories, Christchurch 8140, New Zealand
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
| | - Stephen T. Chambers
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand
- Correspondence: ; Tel.: +64-3-364-0649
| |
Collapse
|
12
|
Lian X, Scott-Thomas A, Lewis JG, Bhatia M, MacPherson SA, Zeng Y, Chambers ST. Monoclonal Antibodies and Invasive Aspergillosis: Diagnostic and Therapeutic Perspectives. Int J Mol Sci 2022; 23:ijms23105563. [PMID: 35628374 PMCID: PMC9146623 DOI: 10.3390/ijms23105563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 12/13/2022] Open
Abstract
Invasive aspergillosis (IA) is a life-threatening fungal disease that causes high morbidity and mortality in immunosuppressed patients. Early and accurate diagnosis and treatment of IA remain challenging. Given the broad range of non-specific clinical symptoms and the shortcomings of current diagnostic techniques, most patients are either diagnosed as “possible” or “probable” cases but not “proven”. Moreover, because of the lack of sensitive and specific tests, many high-risk patients receive an empirical therapy or a prolonged treatment of high-priced antifungal agents, leading to unnecessary adverse effects and a high risk of drug resistance. More precise diagnostic techniques alongside a targeted antifungal treatment are fundamental requirements for reducing the morbidity and mortality of IA. Monoclonal antibodies (mAbs) with high specificity in targeting the corresponding antigen(s) may have the potential to improve diagnostic tests and form the basis for novel IA treatments. This review summarizes the up-to-date application of mAb-based approaches in assisting IA diagnosis and therapy.
Collapse
Affiliation(s)
- Xihua Lian
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Department of Medical Imaging, The Second Clinical Medical School of Fujian Medical University, Quanzhou 362000, China
| | - Amy Scott-Thomas
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
| | - John G. Lewis
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Steroid and Immunobiochemistry Laboratory, Canterbury Health Laboratories, Christchurch 8140, New Zealand
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
| | - Sean A. MacPherson
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Haematology Department, Christchurch Hospital, Christchurch 8011, New Zealand
| | - Yiming Zeng
- Department of Internal Medicine (Pulmonary and Critical Care Medicine), The Second Clinical Medical School of Fujian Medical University, Quanzhou 362000, China;
| | - Stephen T. Chambers
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 8140, New Zealand; (X.L.); (A.S.-T.); (J.G.L.); (M.B.); (S.A.M.)
- Correspondence: ; Tel.: +64-3-364-0649
| |
Collapse
|
13
|
Case Commentary: Long-term fosmanogepix use in a transplant recipient with disseminated aspergillosis caused by azole-resistant
Aspergillus calidoustus. Antimicrob Agents Chemother 2022; 66:e0236821. [DOI: 10.1128/aac.02368-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Aspergillus calidoustus
is an emerging, azole-resistant, cryptic
Aspergillus
species in immunosuppressed patients that often features extrapulmonary involvement and carries high mortality. The case presented by J. F. Camargo, R. Jabr, A. D. Anderson, L. Lekakis, et al. (Antimicrob Agents Chemother 66:e02206-21, 2022,
https://doi.org/10.1128/aac.02206-21
) describes a transplant recipient with disseminated
A. calidoustus
infection who was successfully treated with surgical source control, tapering of immunosuppression, and long-term, combination antifungal treatment that included the first-in-class fosmanogepix, which targets fungal mannoprotein trafficking and anchoring.
Collapse
|
14
|
Novel Clinical and Laboratorial Challenges in Aspergillosis. Microorganisms 2022; 10:microorganisms10020259. [PMID: 35208714 PMCID: PMC8877562 DOI: 10.3390/microorganisms10020259] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 01/04/2023] Open
Abstract
In recent years, research in the areas of Aspergillus and aspergillosis has continued to advance rapidly, including advancements in genomics, immunological studies, clinical areas, and diagnostic areas. Recently, new risk groups for the development of aspergillosis have emerged—patients with influenza- or COVID-19-ssociated pulmonary aspergillosis. The rise and spread of antifungal resistances have also become a clinical concern in some geographic areas and have drawn the attention of clinicians due to difficulties in treating these infections. In this paper, a snapshot of these issues is presented, emphasizing these novel clinical and laboratorial challenges in the aspergillosis field and focusing on their actual relevance.
Collapse
|