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Álvarez-Pérez S, García ME, Martínez-Nevado E, Blanco JL. Presence of Aspergillus fumigatus with the TR 34/L98H Cyp51A mutation and other azole-resistant aspergilli in the air of a zoological park. Res Vet Sci 2023; 164:104993. [PMID: 37657393 DOI: 10.1016/j.rvsc.2023.104993] [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: 04/14/2023] [Revised: 08/03/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023]
Abstract
Antifungal-resistant fungi, including Aspergillus fumigatus and other Aspergillus species, pose an urgent threat to human and animal health. Furthermore, the environmental route of azole resistance selection due to the widespread use of azole fungicides in crop protection and other applications is a major public health issue. Although environmental surveillance of fungi is frequently performed in many zoological parks and wildlife rehabilitation centers, the antifungal susceptibility of recovered isolates is only rarely analyzed, which precludes a clear assessment of the threat posed by these fungi to captive animals. In this study, we assessed the presence of airborne azole-resistant Aspergillus spp., including the so-called 'cryptic species' (i.e., species which are phenotypically similar to more well-known aspergilli but clearly constitute different phylogenetic lineages) in a zoological park located in the city of Madrid, Spain. In general, our results revealed a low prevalence A. fumigatus and cryptic aspergilli with decreased susceptibility to azoles. However, we detected an A. fumigatus isolate with the TR34/L98H mutation in the gene encoding the lanosterol 14α-demethylase (Cyp51A), consisting of a tandem repeat of 34 base pairs in the promoter region and a lysine to histidine substitution at codon 98. Notably, this TR34/L98H mutation has been linked to the environmental route of azole resistance selection, thus highlighting the 'One Health' dimension of the emerging problem of antifungal resistance. In this context, continuous environmental surveillance of azole-resistant aspergilli in zoological parks and other similar animal facilities is recommended.
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Affiliation(s)
- Sergio Álvarez-Pérez
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Avenida Puerta de Hierro s/n, Madrid 28040, Spain.
| | - Marta E García
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Avenida Puerta de Hierro s/n, Madrid 28040, Spain
| | | | - José L Blanco
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Avenida Puerta de Hierro s/n, Madrid 28040, Spain
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Saidi A, Mebdoua S, Mecelem D, Al-Hoshani N, Sadrati N, Boufahja F, Bendif H. Dual biocontrol potential of the entomopathogenic fungus Akanthomyces muscarius against Thaumetopoea pityocampa and plant pathogenic fungi. Saudi J Biol Sci 2023; 30:103719. [PMID: 37457236 PMCID: PMC10344813 DOI: 10.1016/j.sjbs.2023.103719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/15/2023] [Accepted: 06/23/2023] [Indexed: 07/18/2023] Open
Abstract
Akanthomyces spp. species are known for their capacity to biocontrol of certain insects and plant pathogens; however, their ability to biocontrol the pine processionary (Thaumetopoea pityocampa) and certain phytopathogenic fungi belonging to the genera Fusarium and Curvularia have not been studied before. In this study, a strain from Akanthomyces muscarius was isolated from wheat grains and then identified by morphological and molecular tests. The strain was further studied for its capacity to control Thaumetopoea pityocampa larvae through dose-mortality tests, and its ability to control some phytopathogenic fungi strains of the genera Fusarium and Curvularia was studied through direct confrontation tests. Dose-mortality tests at three concentrations of Akanthomyces muscarius against the first instar larvae revealed a mortality of 92.15% after 11 days for the concentration of 2.3 × 106conidia.ml-1, with a median lethal concentration of 7.6 x103 conidia.ml1. Our isolate also showed antifungal activity against these phytopathogenic fungi with inhibition rates ranging from 39.61% to 52.94%. Akanthomyces muscarius proved to be a promising biocontrol agent for plant pests and diseases.
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Affiliation(s)
- Amal Saidi
- Laboratory de Gestion et Valorisation des Ressources Naturelles et Assurance Qualité, Faculty of Natural and Life Sciences and Earth Sciences, University of Bouira,10000 Bouira, Algeria
| | - Samira Mebdoua
- Department of Agronomic Sciences, Faculty of Natural and Life Sciences and Earth Sciences, University of Bouira,10000 Bouira, Algeria
| | - Dalila Mecelem
- Department of Agronomic Sciences, Faculty of Natural and Life Sciences and Earth Sciences, University of Bouira,10000 Bouira, Algeria
| | - Nawal Al-Hoshani
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Nouari Sadrati
- Laboratory of Characterization and Valorization of Natural Resources, University Mohamed El Bachir El Ibrahimi, Bordj Bou-Arreridj 34000, Algeria
| | - Fehmi Boufahja
- Biology Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Hamdi Bendif
- Natural and Life Sciences Department, Faculty of Sciences, Mohamed Boudiaf University, BP 166 Msila, 28000 Msila, Algeria
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Wang HC, Hsieh MI, Choi PC, Wu WL, Wu CJ. Species distribution and antifungal susceptibility of clinical Aspergillus isolates: A multicentre study in Taiwan, 2016-2020. Mycoses 2023. [PMID: 37186489 DOI: 10.1111/myc.13593] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Epidemiological knowledge is important to guide antifungal therapy. OBJECTIVE This multicentre study aimed to investigate the species distribution and antifungal susceptibility of Aspergillus isolates in Taiwan. METHOD Four hundred and ninety-two clinical Aspergillus isolates, collected during 2016-2020, were identified by calmodulin sequencing and tested for antifungal susceptibility using CLSI M38-A3. The Cyp51A sequences of azole-resistant Aspergillus fumigatus and Aspergillus flavus isolates were analysed. RESULTS This collection comprised 30 species from eight Aspergillus sections-Flavi (33.5%), Nigri (26.0%), Fumigati (24.2%), Terrei (10.0%), Nidulantes (5.1%), Circumdati (0.8%), Restricti (0.2%) and Aspergillus (0.2%). Sections Fumigati, Flavi and Terrei were primarily represented by A. fumigatus (99.2%), A. flavus (95.8%) and A. terreus (100%), respectively. Section Nigri comprised nine species, mostly A. welwitschiae (60.2%), A. niger (12.5%), A. brunneoviolaceus (10.9%) and A. tubingensis (10.2%). A. fumigatus (39.6%) and A. flavus (26.4%) predominated among 53 isolates from lower respiratory samples, whereas section Nigri species (46.2%) and A. terreus (29.2%) predominated among 65 isolates from ear samples. Reduced susceptibility to amphotericin B (minimal inhibitory concentration (MIC) > 1 μg/mL) was noted in A. flavus (7.0%), A. terreus (6.1%), A. nidulans and section Circumdati (A. flocculosus, A. subramanianii and A. westerdijkiae) isolates. Acquired azole resistance was observed in seven A. fumigatus (5.9%), all of which carried TR34 /L98H or TR34 /L98H/S297T/F495I mutation, and three A. flavus (1.9%), one of which carried G441S mutation. Reduced susceptibility to itraconazole (MIC >1 μg/mL) was noted in 55.5% of section Nigri isolates, mainly in A. welwitschiae, A. niger and A. tubingensis, whereas A. brunneoviolaceus, A. aculeatinus and A. japonicus were hypersusceptible to azoles. Anidulafungin was active against all isolates except for one isolate. CONCLUSIONS This study depicted the molecular epidemiology and species-specific characteristics of Aspergillus in Taiwan, which aids in appropriate antifungal therapy and underlines the need of speciation and susceptibility testing of disease-causing Aspergillus.
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Affiliation(s)
- Hsuan-Chen Wang
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
| | - Ming-I Hsieh
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
| | - Pui-Ching Choi
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
| | - Wan-Lin Wu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
| | - Chi-Jung Wu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan, Taiwan
- Division of Infectious Diseases, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Imbert S, Normand AC, Costa D, Gabriel F, Lachaud L, Schuttler C, Cassaing S, Mahinc C, Hasseine L, Demar M, Brun S, Bonnal C, Moreno-Sabater A, Becker P, Piarroux R, Fekkar A. Multicentric Analysis of the Species Distribution and Antifungal Susceptibility of Clinical Isolates from Aspergillus Section Circumdati. Antimicrob Agents Chemother 2023; 67:e0146222. [PMID: 36892306 PMCID: PMC10112188 DOI: 10.1128/aac.01462-22] [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: 10/31/2022] [Accepted: 02/05/2023] [Indexed: 03/10/2023] Open
Abstract
The clinical involvement and antifungal susceptibility of Aspergillus section Circumdati are poorly known. We analyzed 52 isolates, including 48 clinical isolates, belonging to 9 species inside the section Circumdati. The whole section exhibited, by the EUCAST reference method, a poor susceptibility to amphotericin B, but species/series-specific patterns were observed for azole drugs. This underlines the interest in getting an accurate identification inside the section Circumdati to guide the choice of antifungal treatment in clinical practice.
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Affiliation(s)
- S. Imbert
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie Mycologie, Paris, France
- Sorbonne Université, Inserm, CNRS, Centre d’Immunologie et des Maladies Infectieuses, Paris, France
| | - A. C. Normand
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie Mycologie, Paris, France
| | - D. Costa
- Centre Hospitalier Universitaire de Rouen, Service de Parasitologie Mycologie, Rouen, France
| | - F. Gabriel
- Centre Hospitalier Universitaire de Bordeaux, Service de Parasitologie Mycologie, Bordeaux, France
| | - L. Lachaud
- Centre Hospitalier Universitaire de Montpellier, Service de Parasitologie Mycologie, Montpellier, France
| | | | - S. Cassaing
- Centre Hospitalier Universitaire de Toulouse, Service de Parasitologie Mycologie, Toulouse, France
| | - C. Mahinc
- Centre Hospitalier Universitaire de Saint Etienne, Service de Parasitologie Mycologie, Saint Etienne, France
| | - L. Hasseine
- Centre Hospitalier Universitaire de Nice, Service de Parasitologie Mycologie, Nice, France
| | - M. Demar
- Centre Hospitalier de Cayenne, Département de Parasitologie Mycologie, Cayenne, French Guiana
| | - S. Brun
- AP-HP, Hôpital Avicenne, Service de Parasitologie Mycologie, Bobigny, France
| | - C. Bonnal
- AP-HP, Hôpital Bichat-Claude Bernard, Service de Parasitologie Mycologie, Paris, France
| | - A. Moreno-Sabater
- AP-HP, Hôpital Saint-Antoine, Service de Parasitologie Mycologie, Paris, France
| | - P. Becker
- Service of Mycology and Aerobiology, BCCM/IHEM Fungal Collection, Brussels, Belgium
| | - R. Piarroux
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie Mycologie, Paris, France
| | - A. Fekkar
- AP-HP, Groupe Hospitalier La Pitié-Salpêtrière, Service de Parasitologie Mycologie, Paris, France
- Sorbonne Université, Inserm, CNRS, Centre d’Immunologie et des Maladies Infectieuses, Paris, France
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D’Assumpcao C, Heidari A. Respiratory Failure With Aspergillus submaranianii and Lymphoplasmacystic Vasculitis. J Investig Med High Impact Case Rep 2022; 10:23247096221140260. [PMID: 36519697 PMCID: PMC9761212 DOI: 10.1177/23247096221140260] [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: 06/07/2022] [Revised: 10/15/2022] [Accepted: 11/02/2022] [Indexed: 12/23/2022] Open
Abstract
Aspergillus subramanianii is a very rare form of Aspergillus in section Circumdati. Aspergillus subramanianii has been rarely reported or ever published. IgG4 disease is an emerging disease entity that can be a diagnostic challenge. We report a critically ill patient who had invasive A subramanianii pulmonary aspergillosis and posthumous diagnosis of IgG subclass 4 interstitial lung disease.
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Affiliation(s)
- Carlos D’Assumpcao
- Kern Medical–University of California,
Los Angeles, Bakersfield, CA, USA
| | - Arash Heidari
- Kern Medical–University of California,
Los Angeles, Bakersfield, CA, USA
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Treviño-Rangel RDJ, Villanueva-Lozano H, Bonifaz A, Castañón-Olivares LR, Andrade A, Becerril-García MA, Martínez-Reséndez MF, Ayala-Gaytán J, Montoya AM, González GM. Species distribution and antifungal susceptibility patterns of Aspergillus isolates from clinical specimens and soil samples in Mexico. Med Mycol 2021; 59:1006-1014. [PMID: 34021564 DOI: 10.1093/mmy/myab031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/05/2021] [Accepted: 05/19/2021] [Indexed: 01/13/2023] Open
Abstract
This study aimed to assess the species distribution and antifungal susceptibility patterns of 200 strains of Aspergillus isolated from clinical specimens (n = 146) and soil samples (n = 54) in Mexico. ITS, β-tubulin, and calmodulin DNA sequencing was performed for species identification. Broth microdilution susceptibility testing for amphotericin B, voriconazole, posaconazole, itraconazole, isavuconazole, anidulafungin, caspofungin, and micafungin was done according to CLSI for all strains. A. fumigatus was most frequently recovered from clinical specimens, while A. niger was commonly encountered in soil, both followed by A. flavus in second place. A total of 60 (30%) cryptic species were identified, with A. tubingensis and A. tamarii being the most commonly found. The decreased susceptibility to amphotericin B and azoles was 32% for both, and were mainly led by A. fumigatus, whereas this percentage decreased to 9% for caspofungin particularly in A. terreus. More than 75% of cryptic species were susceptible in vitro to all antifungals. Multi-azole decreased susceptibility was detected only in 7 isolates. Given that antifungal resistance in Aspergillus spp. is an increasing worldwide threat that causes major challenges in the clinical management of aspergillosis, these data highlight the need for continuous epidemiological surveillance of these pathogens for the implementation of locally-adequate treatment strategies.
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Affiliation(s)
- Rogelio de J Treviño-Rangel
- Departamento de Microbiología, Facultad de Medicina and Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Hiram Villanueva-Lozano
- Departamento de Microbiología, Facultad de Medicina and Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Alexandro Bonifaz
- Servicio de Dermatología and Departamento de Micología, Hospital General de México "Dr. Eduardo Liceaga", Mexico City, Mexico
| | - Laura R Castañón-Olivares
- Unidad de Micología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Angel Andrade
- Departamento de Microbiología, Facultad de Medicina and Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Miguel A Becerril-García
- Departamento de Microbiología, Facultad de Medicina and Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | | | - Jacobo Ayala-Gaytán
- Unidad de Vigilancia Epidemiológica, Hospital San José-Tec Salud, Monterrey, Mexico
| | - Alexandra M Montoya
- Departamento de Microbiología, Facultad de Medicina and Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | - Gloria M González
- Departamento de Microbiología, Facultad de Medicina and Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Mexico
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7
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In Vitro Activity of Ibrexafungerp against a Collection of Clinical Isolates of Aspergillus, Including Cryptic Species and Cyp51A Mutants, Using EUCAST and CLSI Methodologies. J Fungi (Basel) 2021; 7:jof7030232. [PMID: 33804780 PMCID: PMC8003840 DOI: 10.3390/jof7030232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/05/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Ibrexafungerp is a new orally-available 1,3-β-D-glucan synthesis inhibitor in clinical development. Its in vitro activity and that of amphotericin B, voriconazole, and micafungin were evaluated against a collection of 168 clinical isolates of Aspergillus spp., including azole-susceptible and azole-resistant (Cyp51A mutants) Aspergillus fumigatus sensu stricto (s.s.) and cryptic species of Aspergillus belonging to six species complexes showing different patterns of antifungal resistance, using EUCAST and CLSI antifungal susceptibility testing reference methods. Ibrexafungerp displayed low geometric means of minimal effective concentrations (MECs) against A. fumigatus s.s. strains, both azole susceptible (0.040 mg/L by EUCAST and CLSI versus 1.231 mg/L and 0.660 mg/L for voriconazole, respectively) and azole resistant (0.092 mg/L and 0.056 mg/L, EUCAST and CLSI, while those for voriconazole were 2.144 mg/L and 2.000 mg/L). Ibrexafungerp was active against most of the cryptic species of Aspergillus tested, yielding MEC values only comparable to those of micafungin. Nevertheless, this new compound exhibited a moderate activity against A. ustus complex species, MECs ≥ 0.5 mg/L against Aspergillus insuetus and Aspergillus keveii strains, and was inactive against the Aspergillus alliaceus isolates tested (MEC90s ≥ 16 mg/L). All in all, ibrexafungerp shows encouraging in vitro results against cryptic species of Aspergillus and azole-susceptible and azole resistant strains of A. fumigatus, some of which are difficult to treat using the available therapeutic options.
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8
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Xu Y, Chen M, Zhu J, Gerrits van den Ende B, Chen AJ, Al-Hatmi AMS, Li L, Zhang Q, Xu J, Liao W, Chen Y. Aspergillus Species in Lower Respiratory Tract of Hospitalized Patients from Shanghai, China: Species Diversity and Emerging Azole Resistance. Infect Drug Resist 2020; 13:4663-4672. [PMID: 33402838 PMCID: PMC7778383 DOI: 10.2147/idr.s281288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 11/28/2020] [Indexed: 01/19/2023] Open
Abstract
Purpose To investigate species diversity and prevalence of antifungal resistance among clinical isolates of Aspergillus spp. in Shanghai, China. Patients and Methods In this study, the Aspergillus spp. isolates were analyzed by multilocus sequence typing (MLST) targeting the internal transcribed spacer (ITS) regions, and partial β-tubulin (BenA) and calmodulin (CaM) genes. The susceptibilities of these isolates to nine antifungal agents were determined according to the protocol in document M38-A3 established by the Clinical and Laboratory Standards Institute (CLSI). Results The most common Aspergillus spp. was A. fumigatus (58.2%), followed by the A. flavus complex (23.5%), and A. niger complex (15.3%). Isolates belonging to A. tamarii and A. effusus of the A. flavus complex and A. tubingensis and A. awamori of the A. niger complex were identified. Moreover, several mutations were found in the azole target cyp51A gene (TR46/Y121F/T289A and F46Y, G89G, M172V, N248T and D255E) in azole-resistant isolates of A. fumigatus. Conclusion The results of our study revealed a diversity of species in the lower respiratory tract of inpatients in Shanghai and approximately 9% of our isolates were resistant to at least one of the triazole antifungals. Formulation of local treatment strategies to combat emerging azole resistance and species diversity in clinically relevant Aspergillus spp. is needed.
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Affiliation(s)
- Yuan Xu
- Department of Dermatology, The Third People's Hospital of Hangzhou, Hangzhou, People's Republic of China.,Department of Dermatology, Shanghai Key Laboratory of Molecular Medical Mycology, ChangZheng Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - Min Chen
- Department of Dermatology, Shanghai Key Laboratory of Molecular Medical Mycology, ChangZheng Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - Junhao Zhu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Bert Gerrits van den Ende
- Department of Food and Indoor Mycology, Westerdijk Fungal Biodiversity Institute, Utrecht, the Netherlands
| | - Amanda Juan Chen
- Department of Medical Mycology, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Abdullah M S Al-Hatmi
- Centre of Expertise in Mycology, Radboud University Medical Centre, Canisius Wilhelmina Hospital, Nijmegen, the Netherlands.,Ministry of Health, Directorate General of Health Services, Ibri, Oman
| | - Li Li
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Qiangqiang Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Jianping Xu
- Department of Biology, McMaster University, Hamilton, Canada
| | - Wanqing Liao
- Department of Dermatology, Shanghai Key Laboratory of Molecular Medical Mycology, ChangZheng Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - Yuchong Chen
- Department of Dermatosurgery, Shanghai Skin Diseases Hospital, School of Medicine, Tongji University, Shanghai, People's Republic of China
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Welker M, Van Belkum A, Girard V, Charrier JP, Pincus D. An update on the routine application of MALDI-TOF MS in clinical microbiology. Expert Rev Proteomics 2019; 16:695-710. [PMID: 31315000 DOI: 10.1080/14789450.2019.1645603] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) has entered clinical diagnostics and is today a generally accepted and integral part of the workflow for microbial identification. MALDI-TOF MS identification systems received approval from national and international institutions, such as the USA-FDA, and are continuously improved and adopted to other fields like veterinary and industrial microbiology. The question is whether MALDI-TOF MS also has the potential to replace other conventional and molecular techniques operated in routine diagnostic laboratories. Areas covered: We give an overview of new advancements of mass spectral analysis in the context of microbial diagnostics. In particular, the expansion of databases to increase the range of readily identifiable bacteria and fungi, the refined discrimination of species complexes, subspecies, and types, the testing for antibiotic resistance or susceptibility, progress in sample preparation including automation, and applications of other mass spectrometry techniques are discussed. Expert opinion: Although many new approaches of MALDI-TOF MS are still in the stage of proof of principle, it is expectable that MALDI-TOF MS will expand its role in the clinical microbiology laboratory of the future. New databases, instruments and analytical software modules will continue to be developed to further improve diagnostic efficacy.
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Affiliation(s)
- Martin Welker
- bioMérieux, Microbiology R&D , La Balme Les Grottes , France
| | - Alex Van Belkum
- bioMérieux, Microbiology R&D , La Balme Les Grottes , France
| | - Victoria Girard
- bioMérieux, Microbiology R&D , La Balme Les Grottes , France
| | | | - David Pincus
- bioMérieux, Microbiology Innovation , Hazelwood , MO , USA
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Warnock DW. Name Changes for Fungi of Medical Importance, 2016-2017. J Clin Microbiol 2019; 57:e01183-18. [PMID: 30257904 PMCID: PMC6355541 DOI: 10.1128/jcm.01183-18] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/18/2018] [Indexed: 11/20/2022] Open
Abstract
This article lists proposed new or revised species names and classification changes associated with fungi of medical importance that were published in the years 2016 and 2017. While many of the revised names listed have been widely adopted without further discussion, some may take longer to achieve more general usage.
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11
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Epidemiology of antifungal susceptibility: Review of literature. J Mycol Med 2019; 28:574-584. [PMID: 29773435 DOI: 10.1016/j.mycmed.2018.04.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 04/26/2018] [Accepted: 04/27/2018] [Indexed: 11/24/2022]
Abstract
Fungal infections are a major cause of morbidity and mortality despite the latest developments of diagnostic tools and therapeutic options. Early initiation of the appropriate antifungal therapy has been demonstrated to have a direct impact on the patient's outcome. Antifungal susceptibility testing methods are available to detect antifungal resistance and to determine the best treatment for a specific fungus. American and European standards have been developed, as well as equivalent commercial systems, which are more appropriate for clinical laboratories. These studies have allowed the development of interpretative breakpoints against the most frequent agents of fungal infections in the world. Surveillance of antifungal susceptibility patterns can provide the local drug resistance data to the clinicians, which can further aid better management of patients. Antifungal susceptibility tests have become essential tools to identify resistance to antifungals, to know the local and global disease epidemiology and to guide the treatment of fungal diseases. The distribution of species and the prevalence of antifungal resistance in fungi isolates varied among different areas. Here we summarize the epidemiology of antifungal susceptibility pattern of different fungal species.
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Bongomin F, Moore CB, Masania R, Rowbotham E, Alastruey-Izquierdo A, Novak-Frazer L, Richardson MD. Sequence analysis of isolates of Aspergillus from patients with chronic and allergic aspergillosis reveals a spectrum of cryptic species. Future Microbiol 2018; 13:1557-1563. [PMID: 30417667 DOI: 10.2217/fmb-2018-0178] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIM To establish the prevalence and antifungal susceptibilities of Aspergillus cryptic species from respiratory samples. Methods: Retrospective susceptibility data on Aspergillus species cultured between 2015 and 2017 by 'high volume culture' (HVC) versus 'conventional' culture techniques. RESULTS Fifty-six (2.5%) isolates were identified as Aspergillus cryptic species by sequencing of ITS, BenA and CalM gene loci. Recovery was higher in HVCs compared to conventional cultures. Common cryptic species were Aspergillus montevidensis (n = 15), A. creber (n = 11), A. sydowii (n = 5) and A. calidoustus (n = 4). Eighteen (32.1%) isolates had minimum inhibitory concentration (MIC) values ≥4 mg/l to amphotericin B, and 19.1-60.1% had MIC values ≥8 mg/l to the triazoles. CONCLUSION HVC increases the likelihood of recovery of cryptic species. MIC values to antifungals were high.
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Affiliation(s)
- Felix Bongomin
- The National Aspergillosis Centre, ECMM Center of Excellence in Clinical & Laboratory Mycology & Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.,Division of Infection, Immunity & Respiratory Medicine, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester, UK
| | - Caroline B Moore
- Division of Infection, Immunity & Respiratory Medicine, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester, UK.,NHS Mycology Reference Centre-Manchester, ECMM Center of Excellence in Clinical & Laboratory Mycology & Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Rikesh Masania
- NHS Mycology Reference Centre-Manchester, ECMM Center of Excellence in Clinical & Laboratory Mycology & Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Eleanor Rowbotham
- NHS Mycology Reference Centre-Manchester, ECMM Center of Excellence in Clinical & Laboratory Mycology & Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Ana Alastruey-Izquierdo
- Mycology Reference Laboratory, National Centre for Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Lily Novak-Frazer
- Division of Infection, Immunity & Respiratory Medicine, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester, UK.,NHS Mycology Reference Centre-Manchester, ECMM Center of Excellence in Clinical & Laboratory Mycology & Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Malcolm D Richardson
- Division of Infection, Immunity & Respiratory Medicine, Faculty of Biology, Medicine & Health, The University of Manchester, Manchester, UK.,NHS Mycology Reference Centre-Manchester, ECMM Center of Excellence in Clinical & Laboratory Mycology & Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
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13
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Prevalence and in vitro antifungal susceptibility of cryptic species of the genus Aspergillus isolated in clinical samples. Enferm Infecc Microbiol Clin 2018; 37:296-300. [PMID: 30292326 DOI: 10.1016/j.eimc.2018.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/08/2018] [Accepted: 07/20/2018] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The genus Aspergillus contains more than 300 species, which are divided into closely related groups called sections. Molecular studies have revealed numerous cryptic species within different sections of this genus, which have different profiles of antifungal susceptibility and lack diagnostic morphological features. However, there are few studies on the prevalence and in vitro antifungal susceptibility of the cryptic species of this genus. The aim of this study was to investigate the distribution of Aspergillus spp. among clinical samples, and to study their in vitro susceptibility to different antifungal drugs. METHOD Over a period of 2-years (2014-2015), a total of 379 strains of the genus Aspergillus were isolated. Most of the isolates were classified as respiratory colonizations; no cases of invasive aspergillosis were found. The strains were identified by MALDI-TOF mass spectrometry, and susceptibility testing was performed by the EUCAST reference procedure. RESULTS Twenty species belonging to 8 sections were identified, being A. fumigatus the most prevalent (44.1%). The prevalence of cryptic species was 15.3%, with a clear predominance of A. tubingensis. Among the tested antifungal drugs, amphotericin B was the less active in vitro, followed by triazole drugs and echinocandins. The cryptic species had minimun inhibitory concentrations (MICs) higher than the corresponding type species. CONCLUSIONS Accurate identification of the genus Aspergillus at the species level and in vitro antifungal susceptibility testing are necessary because, as it has been shown, some species of this genus may show resistance profiles against available antifungal drugs.
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14
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In Vitro Activity of Isavuconazole against Opportunistic Fungal Pathogens from Two Mycology Reference Laboratories. Antimicrob Agents Chemother 2018; 62:AAC.01230-18. [PMID: 30061288 PMCID: PMC6153788 DOI: 10.1128/aac.01230-18] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 07/19/2018] [Indexed: 12/21/2022] Open
Abstract
Monitoring antifungal susceptibility patterns for new and established antifungal agents seems prudent given the increasing prevalence of uncommon species associated with higher antifungal resistance. We evaluated the activity of isavuconazole against 4,856 invasive yeasts and molds collected worldwide. The 4,856 clinical fungal isolates, including 2,351 Candida species isolates, 97 non-Candida yeasts, 1,972 Aspergillus species isolates, and 361 non-Aspergillus molds, including 292 Mucorales isolates collected in 2015 to 2016, were tested using CLSI methods. The MIC values for isavuconazole versus Aspergillus ranged from 0.06 to ≥16 μg/ml. The modal MIC for isavuconazole was 0.5 μg/ml (range, 0.25 [A. nidulans and A. terreus species complex] to 4 μg/ml [A. calidoustus and A. tubingensis]). Eight A. fumigatus isolates had elevated isavuconazole MIC values at ≥8 μg/ml (non-wild type). Isavuconazole showed comparable activity to itraconazole against the Mucorales The lowest modal isavuconazole MIC values were seen for Rhizopus spp., R. arrhizus var. arrhizus, and R. microsporus (all 1 μg/ml). Candida species isolates were inhibited by ≤0.25 μg/ml of isavuconazole (range, 96.1% [C. lusitaniae] to 100.0% [C. albicans, C. dubliniensis, C. kefyr, and C. orthopsilosis]). MIC values were ≤1 μg/ml for 95.5% of C. glabrata isolates and 100.0% of C. krusei isolates. Isavuconazole was active against the non-Candida yeasts, including Cryptococcus neoformans (100.0% at ≤0.5 μg/ml). Isavuconazole exhibited excellent activity against most species of Candida and Aspergillus Isavuconazole was comparable to posaconazole and voriconazole against the less common yeasts and molds. Isavuconazole was generally less active than posaconazole and more active than voriconazole against the 292 Mucorales isolates. We confirm the potentially useful activity of isavuconazole against species of Rhizopus as determined by CLSI methods.
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15
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Hirose M, Noguchi H, Yaguchi T, Matsumoto T, Hiruma M, Fukushima S, Ihn H. Onychomycosis caused by Aspergillus subramanianii. J Dermatol 2018; 45:1362-1366. [PMID: 30144137 DOI: 10.1111/1346-8138.14616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 07/24/2018] [Indexed: 11/30/2022]
Abstract
We describe a case of a 23-year-old female patient with no apparent underlying diseases. She showed a discoloration of the proximal portion of the left big toenail with paronychia. Direct microscopy revealed septate hyphae with conidiophores, and a periodic acid-Schiff-stained nail specimen revealed septate hyphae branching at angles of approximately 45°. On the basis of phylogenetic analysis, we finally arrived at the diagnosis of ungual aspergillosis caused by Aspergillus subramanianii. After p.o. administration of terbinafine and topical application of 10% efinaconazole solution, the disease resolved in 6 months. A. subramanianii is one of the new species in the genus Aspergillus section Circumdati. Reported clinical isolates have been isolated from lung tissue, wounds and feet. This is the first documented case of onychomycosis caused by A. subramanianii. Onychomycosis due to Aspergillus species is uncommon. We summarized the reported cases of ungual aspergillosis in Japan.
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Affiliation(s)
- Miki Hirose
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiromitsu Noguchi
- Noguchi Dermatology Clinic, Kumamoto, Japan.,Ochanomizu Institute for Medical Mycology and Allergology, Tokyo, Japan
| | - Takashi Yaguchi
- Division of Bio-resources, Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - Tadahiko Matsumoto
- Noguchi Dermatology Clinic, Kumamoto, Japan.,Ochanomizu Institute for Medical Mycology and Allergology, Tokyo, Japan
| | - Masataro Hiruma
- Ochanomizu Institute for Medical Mycology and Allergology, Tokyo, Japan
| | - Satoshi Fukushima
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Hironobu Ihn
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
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Siqueira JPZ, Wiederhold N, Gené J, García D, Almeida MTG, Guarro J. CrypticAspergillusfrom clinical samples in the USA and description of a new species in sectionFlavipedes. Mycoses 2018; 61:814-825. [DOI: 10.1111/myc.12818] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/15/2018] [Accepted: 06/15/2018] [Indexed: 11/27/2022]
Affiliation(s)
- João P. Z. Siqueira
- Unitat de Micologia; Facultat de Medicina i Ciències de la Salut; IISPV; Universitat Rovira i Virgili; Reus Spain
- Faculdade de Medicina de São José do Rio Preto; Laboratório de Microbiologia; São José do Rio Preto Brazil
| | - Nathan Wiederhold
- Fungus Testing Laboratory; University of Texas Health Science Center; San Antonio Texas
| | - Josepa Gené
- Unitat de Micologia; Facultat de Medicina i Ciències de la Salut; IISPV; Universitat Rovira i Virgili; Reus Spain
| | - Dania García
- Unitat de Micologia; Facultat de Medicina i Ciències de la Salut; IISPV; Universitat Rovira i Virgili; Reus Spain
| | - Margarete T. G. Almeida
- Faculdade de Medicina de São José do Rio Preto; Laboratório de Microbiologia; São José do Rio Preto Brazil
| | - Josep Guarro
- Unitat de Micologia; Facultat de Medicina i Ciències de la Salut; IISPV; Universitat Rovira i Virgili; Reus Spain
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17
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Tsang CC, Tang JY, Lau SK, Woo PC. Taxonomy and evolution of Aspergillus, Penicillium and Talaromyces in the omics era - Past, present and future. Comput Struct Biotechnol J 2018; 16:197-210. [PMID: 30002790 PMCID: PMC6039702 DOI: 10.1016/j.csbj.2018.05.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 03/12/2018] [Accepted: 05/23/2018] [Indexed: 11/19/2022] Open
Abstract
Aspergillus, Penicillium and Talaromyces are diverse, phenotypically polythetic genera encompassing species important to the environment, economy, biotechnology and medicine, causing significant social impacts. Taxonomic studies on these fungi are essential since they could provide invaluable information on their evolutionary relationships and define criteria for species recognition. With the advancement of various biological, biochemical and computational technologies, different approaches have been adopted for the taxonomy of Aspergillus, Penicillium and Talaromyces; for example, from traditional morphotyping, phenotyping to chemotyping (e.g. lipotyping, proteotypingand metabolotyping) and then mitogenotyping and/or phylotyping. Since different taxonomic approaches focus on different sets of characters of the organisms, various classification and identification schemes would result. In view of this, the consolidated species concept, which takes into account different types of characters, is recently accepted for taxonomic purposes and, together with the lately implemented 'One Fungus - One Name' policy, is expected to bring a more stable taxonomy for Aspergillus, Penicillium and Talaromyces, which could facilitate their evolutionary studies. The most significant taxonomic change for the three genera was the transfer of Penicillium subgenus Biverticillium to Talaromyces (e.g. the medically important thermally dimorphic 'P. marneffei' endemic in Southeast Asia is now named T. marneffei), leaving both Penicillium and Talaromyces as monophyletic genera. Several distantly related Aspergillus-like fungi were also segregated from Aspergillus, making this genus, containing members of both sexual and asexual morphs, monophyletic as well. In the current omics era, application of various state-of-the-art omics technologies is likely to provide comprehensive information on the evolution of Aspergillus, Penicillium and Talaromyces and a stable taxonomy will hopefully be achieved.
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Affiliation(s)
- Chi-Ching Tsang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - James Y.M. Tang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Susanna K.P. Lau
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong
- Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong
| | - Patrick C.Y. Woo
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong
- Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong
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