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Cighir A, Mare AD, Vultur F, Cighir T, Pop SD, Horvath K, Man A. Fusarium spp. in Human Disease: Exploring the Boundaries between Commensalism and Pathogenesis. Life (Basel) 2023; 13:1440. [PMID: 37511815 PMCID: PMC10381950 DOI: 10.3390/life13071440] [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: 06/12/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 07/30/2023] Open
Abstract
Fusarium is a large fungal genus that is widely distributed in the environment, mostly known for its plant pathogenicity. Rarely, it is involved in human pathology, where the type of infection caused is highly dependent upon the portal of entry and the immune status of the host. The study at hand aims to summarize routine methods used in diagnosing such infections as well as more advanced molecular diagnostic methods, techniques that can play a huge role in differentiating between colonization and infection when trying to decide the therapeutic outcome. Consequently, to further support our findings, two different strains (one isolated from corneal scrapings and one isolated from purulent discharge) were analyzed in a clinical context and thoroughly tested using classical and modern diagnostic methods: identification by macroscopical and microscopical examinations of the culture and mass spectrometry, completed by molecular methods such as PCR for trichothecene and ERIC-PCR for genetic fingerprinting. Isolation of a clinically relevant Fusarium spp. from a sample still remains a diagnostic challenge for both the clinician and the microbiologist, because differentiating between colonization and infection is very strenuous, but can make a difference in the treatment that is administered to the patient.
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Affiliation(s)
- Anca Cighir
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Doctoral School of Medicine and Pharmacy, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Department of Medical Laboratory, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
| | - Anca Delia Mare
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Department of Medical Laboratory, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
| | - Florina Vultur
- Department of Ophthalmology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Ophthalmology Clinic, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
| | - Teodora Cighir
- Department of Medical Laboratory, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
| | - Suzana Doina Pop
- Department of Ophthalmology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Ophthalmology Clinic, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
| | - Karin Horvath
- Department of Ophthalmology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Ophthalmology Clinic, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
| | - Adrian Man
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Târgu Mures, 38 Gheorghe Marinescu Street, 540139 Târgu Mures, Romania
- Department of Medical Laboratory, Mureș Clinical County Hospital, 1 Gheorghe Marinescu Street, 540103 Târgu Mures, Romania
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Menu E, Filori Q, Dufour JC, Ranque S, L’Ollivier C. A Repertoire of Clinical Non-Dermatophytes Moulds. J Fungi (Basel) 2023; 9:jof9040433. [PMID: 37108888 PMCID: PMC10146755 DOI: 10.3390/jof9040433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
Humans are constantly exposed to micromycetes, especially filamentous fungi that are ubiquitous in the environment. In the presence of risk factors, mostly related to an alteration of immunity, the non-dermatophyte fungi can then become opportunistic pathogens, causing superficial, deep or disseminated infections. With new molecular tools applied to medical mycology and revisions in taxonomy, the number of fungi described in humans is rising. Some rare species are emerging, and others more frequent are increasing. The aim of this review is to (i) inventory the filamentous fungi found in humans and (ii) provide details on the anatomical sites where they have been identified and the semiology of infections. Among the 239,890 fungi taxa and corresponding synonyms, if any, retrieved from the Mycobank and NCBI Taxonomy databases, we were able to identify 565 moulds in humans. These filamentous fungi were identified in one or more anatomical sites. From a clinical point of view, this review allows us to realize that some uncommon fungi isolated in non-sterile sites may be involved in invasive infections. It may present a first step in the understanding of the pathogenicity of filamentous fungi and the interpretation of the results obtained with the new molecular diagnostic tools.
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Affiliation(s)
- Estelle Menu
- Laboratoire de Parasitologie-Mycologie, IHU Méditerranée Infection, 13385 Marseille, France
- Institut de Recherche pour le Développement, Assistance Publique-Hôpitaux de Marseille, Service de Santé des Armées, VITROME: Vecteurs-Infections Tropicales et Méditerra-néennes, Aix Marseille Université, 13385 Marseille, France
| | - Quentin Filori
- INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, Aix Marseille University, 13385 Marseille, France
| | - Jean-Charles Dufour
- INSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, Aix Marseille University, 13385 Marseille, France
- APHM, Hôpital de la Timone, Service Biostatistique et Technologies de l’Information et de la Communication, 13385 Marseille, France
| | - Stéphane Ranque
- Laboratoire de Parasitologie-Mycologie, IHU Méditerranée Infection, 13385 Marseille, France
- Institut de Recherche pour le Développement, Assistance Publique-Hôpitaux de Marseille, Service de Santé des Armées, VITROME: Vecteurs-Infections Tropicales et Méditerra-néennes, Aix Marseille Université, 13385 Marseille, France
| | - Coralie L’Ollivier
- Laboratoire de Parasitologie-Mycologie, IHU Méditerranée Infection, 13385 Marseille, France
- Institut de Recherche pour le Développement, Assistance Publique-Hôpitaux de Marseille, Service de Santé des Armées, VITROME: Vecteurs-Infections Tropicales et Méditerra-néennes, Aix Marseille Université, 13385 Marseille, France
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3
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Haghani I, Shams-Ghahfarokhi M, Dalimi Asl A, Shokohi T, Hedayati MT. Prevalence, genetic diversity and antifungal susceptibility profiles of F. fujikuroi, F. solani, and Fusarium incarnatum-equiseti species complexes from onychomycosis in North of Iran. Mycoses 2022; 65:1030-1039. [PMID: 35775829 DOI: 10.1111/myc.13489] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 05/25/2022] [Accepted: 06/25/2022] [Indexed: 11/27/2022]
Abstract
Onychomycosis, a nail fungal infection, is normally caused by dermatophytes. However, yeasts and non-dermatophyte molds (NDM) are among pathogens that cause nail disease. Regarding, this study aimed to describe the molecular epidemiology of Fusarium onychomycosis in the North of Iran. 257 nail samples collected from the patients clinically suspected of onychomycosis were subjected to direct microscopy, calcofluor white staining, and culture. Fusarium isolates were identified at a species level through determination of multi-locus sequences for internal transcribed spacer and translation elongation factor 1 alpha. Based on the findings, Fusarium species were isolated from onychomycosis patients (n=27). According to a previous partial genes analysis, the species in the resent study belonged to the members of F. fujikuroi species complex (n=14), Fusarium incarnatum-equiseti species complex (n=1) and F. solani species complex (n=12). In rhis study, F. proliferatum was the dominant Fusarium species collected from the samples. The correct identification of Fusarium species is essential regarding the increased prevalence of Fusarium onychomycosis and the inherent resistance of these agents to a wide spectrum of antifungals. The obtained results indicated variation in the epidemiology of Fusarium species isolated from onychomycosis. Moreover, the minimum inhibitory concentration (MIC) of luliconazole and lanoconazole was in the range of 0.001-1 μg/mL, with the geometric mean of MICs obtained at 0.0103 and 0.0343 μg/mL against Fusarium species, respectively. These findings can increase researchers' knowledge regarding diversity of species, distribution of onychomycosis, and the choice of a proper treatment.
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Affiliation(s)
- Iman Haghani
- Department of Mycology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.,Department of Medical Mycology and Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Abdolhossein Dalimi Asl
- Department of Medical Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Tahereh Shokohi
- Department of Medical Mycology and Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Taghi Hedayati
- Department of Medical Mycology and Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
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Zhou H, Xu Y, Ebel F, Jin C. Galactofuranose (Galf)-containing sugar chain contributes to the hyphal growth, conidiation and virulence of F. oxysporum f.sp. cucumerinum. PLoS One 2021; 16:e0250064. [PMID: 34329342 PMCID: PMC8323920 DOI: 10.1371/journal.pone.0250064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/31/2021] [Indexed: 01/14/2023] Open
Abstract
The ascomycete fungus Fusarium oxysporum f.sp. cucumerinum causes vascular wilt diseases in cucumber. However, few genes related to morphogenesis and pathogenicity of this fungal pathogen have been functionally characterized. BLASTp searches of the Aspergillus fumigatus UgmA and galatofuranosyltransferases (Galf-transferases) sequences in the F. oxysporum genome identified two genes encoding putative UDP-galactopyranose mutase (UGM), ugmA and ugmB, and six genes encoding putative Galf-transferase homologs. In this study, the single and double mutants of the ugmA, ugmB and gfsB were obtained. The roles of UGMs and GfsB were investigated by analyzing the phenotypes of the mutants. Our results showed that deletion of the ugmA gene led to a reduced production of galactofuranose-containing sugar chains, reduced growth and impaired conidiation of F. oxysporum f.sp. cucumerinum. Most importantly, the ugmA deletion mutant lost the pathogenicity in cucumber plantlets. Although deletion of the ugmB gene did not cause any visible phenotype, deletion of both ugmA and ugmB genes caused more severe phenotypes as compared with the ΔugmA, suggesting that UgmA and UgmB are redundant and they can both contribute to synthesis of UDP-Galf. Furthermore, the ΔgfsB exhibited an attenuated virulence although no other phenotype was observed. Our results demonstrate that the galactofuranose (Galf) synthesis contributes to the cell wall integrity, germination, hyphal growth, conidiation and virulence in Fusarium oxysporum f.sp. cucumerinum and an ideal target for the development of new anti-Fusarium agents.
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Affiliation(s)
- Hui Zhou
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Yueqiang Xu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Frank Ebel
- Institute for Infectious Diseases and Zoonoses, LMU, Munich, Germany
| | - Cheng Jin
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- National Engineering Research Center for Non-food Bio-refinery, Guangxi Academy of Sciences, Nanning, China
- * E-mail:
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Maeda J, Koga H, Yuasa K, Neki D, Nanjoh Y, Inagaki K, Reangchainam S, Kampirapap K, Makimura K, Harada K, Tsuboi R. In vitro antifungal activity of luliconazole against nondermatophytic moulds. Med Mycol 2020; 58:703-706. [PMID: 31758690 DOI: 10.1093/mmy/myz117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/04/2019] [Accepted: 11/11/2019] [Indexed: 11/12/2022] Open
Abstract
In vitro antifungal activity of luliconazole against nondermatophytic moulds causing superficial infections was compared with that of five classes of 12 topical and systemic drugs. The minimum inhibitory concentration (MIC) of the drugs against the genera of Neoscytalidium, Fusarium, Aspergillus, Scedosporium, and Alternaria was measured via modified microdilution method. In results, the nondermatophytic moulds were found to be less susceptible to drugs to which Neoscytalidium spp. and Fusarium spp. were typically drug resistant. However, luliconazole was effective against all the genera tested, including afore-mentioned two species, and had the lowest MICs among the drugs tested.
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Affiliation(s)
- Jun Maeda
- Research Center, Nihon Nohyaku Co., Ltd
| | | | - Kou Yuasa
- Research Center, Nihon Nohyaku Co., Ltd
| | | | | | | | | | | | - Koichi Makimura
- Medical Mycology, Graduate School of Medicine, Teikyo University
| | | | - Ryoji Tsuboi
- Department of Dermatology, Tokyo Medical University
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6
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Synthesis and biological activity of fibrate-based acyl- and alkyl-phenoxyacetic methyl esters and 1,2-dihydroquinolines. Med Chem Res 2020. [DOI: 10.1007/s00044-019-02496-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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de Oliveira NF, Santos GRC, Xisto MIDS, Pires Dos Santos GM, Nucci M, Haido RMT, Barreto-Bergter E. β-1,6-linked Galactofuranose- rich peptidogalactomannan of Fusarium oxysporum is important in the activation of macrophage mechanisms and as a potential diagnostic antigen. Med Mycol 2019; 57:234-245. [PMID: 29767770 DOI: 10.1093/mmy/myx167] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A peptidogalactomannan (PGM) from Fusarium oxysporum was structurally characterized by a combination of chemical and spectroscopic methods, including one and two-dimensional nuclear magnetic resonance (1D and 2D NMR). The galactomannan component consists of a main chain containing (1→6)-linked β-D-galactofuranose residues with side chains containing (1→2)-linked α-D-Glcp, (1→2)-linked -β-D-Manp (1→2) and β-D-Manp terminal nonreducing end units and differs from that of Aspergillus fumigatus and Cladosporium resinae that present a main chain containing (1→6)-linked α-D-Manp residues presenting β-D-Galf as side chains of 3-4 units that are (1→5)-interlinked. The importance of the carbohydrate moiety of the F. oxysporum PGM was demonstrated. Periodate oxidation abolished much of the PGM antigenic activity. A strong decrease in reactivity was also observed with de-O-glycosylated PGM. In addition, de-O-glycosylated PGM was not able to inhibit F. oxysporum phagocytosis, suggesting that macrophages recognize and internalize F. oxysporum via PGM. F. oxysporum PGM triggered TNF-α release by macrophages. Chemical removal of O-linked oligosaccharides from PGM led to a significant increase of TNF-α cytokine levels, suggesting that their removal could exposure another PGM motifs able to induce a higher secretion of TNF-α levels. Interestingly, F. oxysporum conidia, intact and de-O-linked PGM were not able to induce IL-10 cytokine release. The difference in patient serum reativity using a PGM from F. oxysporum characterized in the present study as compared with a PGM from C. resinae, that presents the same epitopes recognized by serum from patients with aspergillosis, could be considered a potential diagnostic antigen and should be tested with more sera.
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Affiliation(s)
- Nathalia Ferreira de Oliveira
- Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro (UFRJ), Bloco I, Ilha do Fundão, 21941-970, Rio de Janeiro, RJ, Brazil
| | - Gustavo R C Santos
- Laboratório de Tecido Conjuntivo, Hospital Universitário Clementino Fraga Filho and Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), 21941-913, Rio de Janeiro, RJ, Brazil
| | - Mariana Ingrid D S Xisto
- Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro (UFRJ), Bloco I, Ilha do Fundão, 21941-970, Rio de Janeiro, RJ, Brazil
| | | | - Marcio Nucci
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro (UFRJ), 21941-913, Rio de Janeiro, RJ, Brazil
| | | | - Eliana Barreto-Bergter
- Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro (UFRJ), Bloco I, Ilha do Fundão, 21941-970, Rio de Janeiro, RJ, Brazil
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Calvillo-Medina RP, Reyes-Grajeda JP, Barba-Escoto L, Bautista-Hernandez LA, Campos-Guillén J, Jones GH, Bautista-de Lucio VM. Proteome analysis of biofilm produced by a Fusarium falciforme keratitis infectious agent. Microb Pathog 2019; 130:232-241. [DOI: 10.1016/j.micpath.2019.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/30/2018] [Accepted: 03/01/2019] [Indexed: 11/16/2022]
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9
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Mortaz E, Azempour E, Mansouri D, Tabarsi P, Ghazi M, Koenderman L, Roos D, Adcock IM. Common Infections and Target Organs Associated with Chronic Granulomatous Disease in Iran. Int Arch Allergy Immunol 2019; 179:62-73. [PMID: 30904913 DOI: 10.1159/000496181] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 12/12/2018] [Indexed: 11/19/2022] Open
Abstract
Recurrent severe bacterial and fungal infections are characteristic features of the rare genetic immunodeficiency disorder chronic granulomatous disease (CGD). The disease usually manifests within the first years of life with an incidence of 1 in approximately 200,000 live births. The incidence is higher in Iran and Morocco where it reaches 1.5 per 100,000 live births. Mutations have been described in the 5 subunits of NADPH oxidase, mostly in gp91phox and p47phox, with fewer mutations reported in p67phox, p22phox, and p40phox. These mutations cause loss of superoxide production in phagocytic cells. CYBB, the gene encoding the large gp91phox subunit of the transmembrane component cytochrome b558 of the NADPH oxidase complex, is localized on the X-chromosome. Genetic defects in CYBB are responsible for the disease in the majority of male CGD patients. CGD is associated with the development of granulomatous reactions in the skin, lungs, bones, and lymph nodes, and chronic infections may be seen in the liver, gastrointestinal tract, brain, and eyes. There is usually a history of repeated infections, including inflammation of the lymph glands, skin infections, and pneumonia. There may also be a persistent runny nose, inflammation of the skin, and inflammation of the mucous membranes of the mouth. Gastrointestinal problems can also occur, including diarrhea, abdominal pain, and perianal abscesses. Infection of the bones, brain abscesses, obstruction of the genitourinary tract and/or gastrointestinal tract due to the formation of granulomatous tissue, and delayed growth are also symptomatic of CGD. The prevention of infectious complications in patients with CGD involves targeted prophylaxis against opportunistic microorganisms such as Staphylococcus aureus, Klebsiella spp., Salmonella spp. and Aspergillus spp. In this review, we provide an update on organ involvement and the association with specific isolated microorganisms in CGD patients.
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Affiliation(s)
- Esmaeil Mortaz
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Clinical Tuberculosis and Epidemiology Research Center, National Research Institute for Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Azempour
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Mansouri
- Clinical Tuberculosis and Epidemiology Research Center, National Research Institute for Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Payam Tabarsi
- Clinical Tuberculosis and Epidemiology Research Center, National Research Institute for Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mona Ghazi
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Leo Koenderman
- Department of Respiratory Medicine and Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Dirk Roos
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, University of Amsterdam, Amsterdam, The Netherlands
| | - Ian M Adcock
- Cell and Molecular Biology Group, Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom, .,Priority Research Centre for Asthma and Respiratory Disease, Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales, Australia,
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Gaviria-Rivera A, Giraldo-López A, Santa-Cardona C, Cano-Restrepo L. Molecular identification of clinical isolates of Fusarium in Colombia. ACTA ACUST UNITED AC 2019; 20:94-102. [PMID: 30183891 DOI: 10.15446/rsap.v20n1.51923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 10/09/2017] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Identifying Fusarium isolates from mycosis symptomatic patients through molecular techniques as PCR and sequencing. METHODS In this study, samples were taken from 101 mycosis symptomatic patients in-between 2004-2006. To determine isolates belonging to the Fusarium genus, the DNAr 28S region was amplified through PCR and specific PCR primers further confirmed their identity to the species level. Additionally, in order to confirm the identity of the species of the isolates, 75 isolates of these were analyzed by partial sequencing of the 28S rDNA and the TEF1-α gene. RESULTS The 28S rDNA portion detected all 101 isolates as belonging to Fusarium and the PCR specific primers detected 52 and 29 isolates as F. oxysporum and F. solani, respectively; 34 and 41 of these, afterwards studied by partial sequencing of the 28S rDNA and TEF1- α genes respectively, were effectively identified by the technique. CONCLUSION From all the molecular markers used to identify Fusarium isolates, the sequence of the TEF1-α gene provided the best resolution in the identification of species level; however it is possible to discriminate between F. oxysporum and F. solani isolates by PCR, in most of the cases, what is important considering the simplicity of the technique and a faster diagnosis.
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Affiliation(s)
- Adelaida Gaviria-Rivera
- AG: Ing. Agrónoma. Ph. D. Biological Sciences. Escuela de Biociencias. Facultad de Ciencias. Universidad Nacional de Colombia. Medellín, Colombia.
| | - Alejandra Giraldo-López
- AG: Bacterióloga. M. Sc. Biotecnología. Ph. D. Ciencias Médicas Básicas. Westerdijk Fungal Biodiversity Institute. Utrecht, the Netherlands.
| | | | - Luz Cano-Restrepo
- LC: Téc. Laboratorio Clínico. Lic. Bacteriología y Laboratorio Clínico. Ph. D. Ciencias. Escuela de Bacteriología y Laboratorio Clínico, Universidad de Antioquia. Medellín. Grupo de Micología Médica y Experimental, CIB-UDEA-UPB. Corporación para Investigaciones Biológicas. Escuela de Microbiología, UdeA. Escuela de la Salud, UPB. Medellín, Colombia. ;
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11
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Lorenzo-Gutiérrez D, Gómez-Gil L, Guarro J, Roncero MIG, Fernández-Bravo A, Capilla J, López-Fernández L. Role of the Fusarium oxysporum metallothionein Mt1 in resistance to metal toxicity and virulence. Metallomics 2019; 11:1230-1240. [DOI: 10.1039/c9mt00081j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Soil organisms exhibit high tolerance to heavy metals, probably acquired through evolutionary adaptation to contaminated environments.
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Affiliation(s)
- Damaris Lorenzo-Gutiérrez
- Unitat de Microbiologia
- Facultat de Medicina i Ciències de la Salut and Institut d'Investigació Sanitària Pere Virgili (IISPV)
- Universitat Rovira i Virgili
- Reus
- Spain
| | - Lucía Gómez-Gil
- Departamento de Genetica
- Facultad de Ciencias and Campus de Excelencia Internacional Agroalimentario ceiA3
- Universidad de Cordoba
- 14071 Cordoba
- Spain
| | - Josep Guarro
- Unitat de Microbiologia
- Facultat de Medicina i Ciències de la Salut and Institut d'Investigació Sanitària Pere Virgili (IISPV)
- Universitat Rovira i Virgili
- Reus
- Spain
| | - M. Isabel G. Roncero
- Departamento de Genetica
- Facultad de Ciencias and Campus de Excelencia Internacional Agroalimentario ceiA3
- Universidad de Cordoba
- 14071 Cordoba
- Spain
| | - Ana Fernández-Bravo
- Unitat de Microbiologia
- Facultat de Medicina i Ciències de la Salut and Institut d'Investigació Sanitària Pere Virgili (IISPV)
- Universitat Rovira i Virgili
- Reus
- Spain
| | - Javier Capilla
- Unitat de Microbiologia
- Facultat de Medicina i Ciències de la Salut and Institut d'Investigació Sanitària Pere Virgili (IISPV)
- Universitat Rovira i Virgili
- Reus
- Spain
| | - Loida López-Fernández
- Unitat de Microbiologia
- Facultat de Medicina i Ciències de la Salut and Institut d'Investigació Sanitària Pere Virgili (IISPV)
- Universitat Rovira i Virgili
- Reus
- Spain
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12
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Lombard L, Sandoval-Denis M, Lamprecht S, Crous P. Epitypification of Fusarium oxysporum - clearing the taxonomic chaos. PERSOONIA 2018; 43:1-47. [PMID: 32214496 PMCID: PMC7085860 DOI: 10.3767/persoonia.2019.43.01] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/19/2018] [Indexed: 01/06/2023]
Abstract
Fusarium oxysporum is the most economically important and commonly encountered species of Fusarium. This soil-borne fungus is known to harbour both pathogenic (plant, animal and human) and non-pathogenic strains. However, in its current concept F. oxysporum is a species complex consisting of numerous cryptic species. Identification and naming these cryptic species is complicated by multiple subspecific classification systems and the lack of living ex-type material to serve as basic reference point for phylogenetic inference. Therefore, to advance and stabilise the taxonomic position of F. oxysporum as a species and allow naming of the multiple cryptic species recognised in this species complex, an epitype is designated for F. oxysporum. Using multi-locus phylogenetic inference and subtle morphological differences with the newly established epitype of F. oxysporum as reference point, 15 cryptic taxa are resolved in this study and described as species.
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Affiliation(s)
- L. Lombard
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - M. Sandoval-Denis
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
- Faculty of Natural and Agricultural Sciences, Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - S.C. Lamprecht
- ARC-Plant Health and Protection, Private Bag X5017, Stellenbosch, 7599, Western Cape, South Africa
| | - P.W. Crous
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
- Faculty of Natural and Agricultural Sciences, Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
- Wageningen University and Research Centre (WUR), Laboratory of Phytopathology, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
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Draft Genome Sequences of Two Fusarium oxysporum Isolates Cultured from Infected Zinnia hybrida Plants Grown on the International Space Station. GENOME ANNOUNCEMENTS 2018; 6:6/20/e00326-18. [PMID: 29773617 PMCID: PMC5958250 DOI: 10.1128/genomea.00326-18] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Here, we present the whole-genome sequences of two Fusarium oxysporum isolates cultured from infected Zinnia hybrida plants that were grown onboard the International Space Station (ISS).
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Fungal Contaminants in Drinking Water Regulation? A Tale of Ecology, Exposure, Purification and Clinical Relevance. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017. [PMCID: PMC5486322 DOI: 10.3390/ijerph14060636] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Microbiological drinking water safety is traditionally monitored mainly by bacterial parameters that indicate faecal contamination. These parameters correlate with gastro-intestinal illness, despite the fact that viral agents, resulting from faecal contamination, are usually the cause. This leaves behind microbes that can cause illness other than gastro-intestinal and several emerging pathogens, disregarding non-endemic microbial contaminants and those with recent pathogenic activity reported. This white paper focuses on one group of contaminants known to cause allergies, opportunistic infections and intoxications: Fungi. It presents a review on their occurrence, ecology and physiology. Additionally, factors contributing to their presence in water distribution systems, as well as their effect on water quality are discussed. Presence of opportunistic and pathogenic fungi in drinking water can pose a health risk to consumers due to daily contact with water, via several exposure points, such as drinking and showering. The clinical relevance and influence on human health of the most common fungal contaminants in drinking water is discussed. Our goal with this paper is to place fungal contaminants on the roadmap of evidence based and emerging threats for drinking water quality safety regulations.
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Comparative Pathogenicity of Lomentospora prolificans (Scedosporium prolificans) Isolates from Mexican Patients. Mycopathologia 2017; 182:681-689. [PMID: 28456868 DOI: 10.1007/s11046-017-0137-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/20/2017] [Indexed: 12/29/2022]
Abstract
We identified 11 Lomentospora prolificans isolates recovered from Mexican patients using phenotypic and molecular characteristics. The identification of isolates was assessed by internal transcribed spacer (ITS rDNA) sequencing. In vitro susceptibility to amphotericin B, fluconazole, voriconazole, posaconazole, caspofungin, anidulafungin and micafungin was determined according to Clinical and Laboratory Standards Institute (CLSI) procedures. Three isolates (07-2239, 11-2242 and 04-2673) were used to induce systemic infection in immunocompetent ICR mice. Survival and tissue burden studies were used as markers of pathogenicity. All of the strains were resistant to every antifungal tested with MIC's for AmB (8->8 µg/ml), VRC (16->16 µg/ml), PSC (16->16 µg/ml), FLC (64->64 µg/ml) and echinocandins with MICs ≥8 µg/ml. One hundred, ninety and sixty percent of the infected mice with the strains 07-2239, 11-2242 and 04-2673 died during the study, respectively. Regarding tissue burden, the highest fungal load of the infected mice was detected in brain followed by spleen and kidney, regardless of the strain.
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16
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Gupta AK, Gregurek-Novak T, Konnikov N, Lynde CW, Hofstader S, Summerbell RC. Itraconazole and Terbinafine Treatment of Some Nondermatophyte Molds Causing Onychomycosis of the Toes and a Review of the Literature. J Cutan Med Surg 2016. [DOI: 10.1177/120347540100500303] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Onychomycosis may be caused by dermatophytes (which form the majority of organisms), Candida species, and nondermatophyte molds. Objective: To evaluate the efficacy and safety of itraconazole and terbinafine in the treatment of some nondermatophyte molds that cause toe onychomycosis and to review the literature on the treatment of nondermatophyte mold toe onychomycosis using the oral antifungal agents. Patients and Methods: Patients with nondermatophyte mold toe onychomycosis were treated in an open, prospective manner with either itraconazole (pulse) or terbinafine therapy. In each instance, light microscopic examination was consistent with the diagnosis of a nondermatophyte mold. For each patient, mycological evaluation of the target nail resulted in 3 or more successive cultures yielding growth of the mold alone. Results: All 15 patients had onychomycosis of the toes which was of the distal and lateral type. The patients were treated with itraconazole given as the standard 3 pulses with additional pulses administered depending upon the response exhibited by the toe onychomycosis in the patient. Similarly, terbinafine was given for 12 weeks with additional therapy administered as dictated by the response. Efficacy parameters were mycological cure (MC) and clinical cure (CC). Mycological cure was negative light microscopic examination (KOH) and culture. Clinical cure was the appearance of a completely normal-looking nail. At month 12 from the start of treatment, the response was as follows: Scopulariopsis brevicaulis: itraconazole (MC 4/4, CC 2/4) and terbinafine (MC 0/1, CC 0/1), Fusarium species: itraconazole (MC 1/1, CC 1/1) and terbinafine (MC 0/1, CC 0/1), Aspergillus species: itraconazole (MC 5/6, CC 3/6), Alternaría alternata: itraconazole (MC 0/1, CC 0/1), and Onychocola canadensis: itraconazole (MC 1/1, CC 0/1). There were no significant clinical or laboratory adverse effects. Conclusions: In the present series itraconazole demonstrated efficacy against onychomycosis of the toenails caused by 5. brevicaulis and Aspergillus species. A review of the literature confirms our experience with itraconazole and further suggests that terbinafine may also demonstrate efficacy against cases of S. brevicaulis and Aspergillus toe onychomycosis. Additionally, reports in the literature suggest that pedal onychomycosis caused by Fusarium species may also show response to itraconazole and terbinafine. For the other species, there are fewer data, making it difficult to draw conclusions.
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Affiliation(s)
- Aditya K. Gupta
- Division of Dermatology, Department of Medicine, Sunnybrook and Women's College Health Science Center (Sunnybrook site) and the University of Toronto, Toronto, Canada
| | | | - Nellie Konnikov
- Department of Dermatology, New England Medical Center, Boston, Massachusetts, USA
| | - Charles W. Lynde
- Department of Dermatology, Toronto General and Toronto Western Hospital (Western site) and the University of Toronto, Toronto, Canada
| | - Sophie Hofstader
- Division of Dermatology, Department of Medicine, Sunnybrook and Women's College Health Sciences Center (Women's College site), and the University of Toronto, Toronto, Canada
| | - Richard C. Summerbell
- Centraalbureau voor Schimmelcultures, Baarn, Netherlands
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
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17
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Bahmaei M, Dehghan P, Kachuei R, Babaei H, Mohammadi R. Interdigital intertrigo due to Fusarium oxysporum. Curr Med Mycol 2016; 2:43-46. [PMID: 28681012 PMCID: PMC5490297 DOI: 10.18869/acadpub.cmm.2.1.43] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background and Purpose: Fusariosis is a fungal infection often involving the skin. Various species can cause local, focally invasive, or disseminated infections. The routes of entry for Fusarium species include the respiratory tract, gastrointestinal tract, toe nails, trauma to the skin, and indwelling central venous catheter. Case Report: Herein, we present the case of a 35-year-old woman presenting with interdigital intertrigo. The patient had no predisposing factors and she did not take any antifungal agents. Fusiform macroconidia were observed on the slide culture of the fungus. The etiological agent of the infection was identified as Fusarium oxysporum through sequencing of the translation elongation factor-1 alpha (TEF-1α) gene using the primers EF1 and EF2. Conclusion: Fusariosis commonly presents as a severe fungal infection in immunocompromised patients. However, this infection may also occur in immunocompetent patients. Although treatment with amphotericin B is a routine antifungal therapy for fusariosis, many azoles such as cloterimazole can be used topically with fewer side-effects
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Affiliation(s)
- M Bahmaei
- Department of Medical Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - P Dehghan
- Department of Medical Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - R Kachuei
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - H Babaei
- Department of Medical Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - R Mohammadi
- Department of Medical Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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18
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Su H, Zhang Q, Li L, Zhao Y, Zhu J, Zhu M. Urinary Tract Infection (UTI) Caused by Fusarium proliferatum in an Agranulocytosis Patient and a Review of Published Reports. Mycopathologia 2015; 181:131-5. [PMID: 26346378 DOI: 10.1007/s11046-015-9937-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/27/2015] [Indexed: 10/23/2022]
Abstract
Infections caused by Fusarium species are increasing in frequency among immunocompromised hosts, but urinary tract infection (UTI) due to Fusarium proliferatum has not been reported in the literature so far. We describe a case of UTI caused by F. proliferatum in a 47-year-old man who was diagnosed with rectal cancer and metastasis. He underwent radical resection of rectal carcinoma and local resection of hepatic metastases. After the first adjuvant chemotherapy, the patient presented the obvious high fever, severely diarrhea and progressive decline of the white blood cell count. The direct microscopic examination of fungi in urine was positive, and the fungal cultures showed white, cotton-like colony. After the DNA sequencing, it was identified as F. proliferatum. We gave the patient itraconazole and other antibiotics to fight the infection. A month later, the temperature dropped to normal and the results of the direct microscopic examination and culture of fungi in urine turn negative. The itraconazole is effective against F. proliferatum.
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Affiliation(s)
- Huilin Su
- The Center for Medical Mycology, Department of Dermatology, Huashan Hospital, Fudan University, No 12, Middle Urumqi Road, Shanghai, 200040, People's Republic of China
| | - Qiangqiang Zhang
- The Center for Medical Mycology, Department of Dermatology, Huashan Hospital, Fudan University, No 12, Middle Urumqi Road, Shanghai, 200040, People's Republic of China
| | - Li Li
- The Center for Medical Mycology, Department of Dermatology, Huashan Hospital, Fudan University, No 12, Middle Urumqi Road, Shanghai, 200040, People's Republic of China
| | - Ying Zhao
- The Center for Medical Mycology, Department of Dermatology, Huashan Hospital, Fudan University, No 12, Middle Urumqi Road, Shanghai, 200040, People's Republic of China
| | - Junhao Zhu
- The Center for Medical Mycology, Department of Dermatology, Huashan Hospital, Fudan University, No 12, Middle Urumqi Road, Shanghai, 200040, People's Republic of China
| | - Min Zhu
- The Center for Medical Mycology, Department of Dermatology, Huashan Hospital, Fudan University, No 12, Middle Urumqi Road, Shanghai, 200040, People's Republic of China.
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19
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Dermatitis in the Fringe-Toed Lizard, Acanthodactylus nilsoni Rastegar-Pouyani, 1998 (Sauria: Lacertidae) Associated with Fusarium proliferatum. Curr Microbiol 2015; 71:607-12. [PMID: 26292787 DOI: 10.1007/s00284-015-0892-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 07/09/2015] [Indexed: 10/23/2022]
Abstract
From July to October 2013, nine out of 40 Acanthodactylus nilsoni collected from Western Iran, showed clinical signs of dermatitis in the dorsal and ventral surface of neck and fingers. Therefore, the aim of this survey was to identify the fungal flora colonizing the skin of A. nilsoni using morphological and molecular studies. Nine isolates of Fusarium were obtained from infected lizard samples and identified as Fusarium proliferatum through study of morphological characters. In the present study, selected F. proliferatum isolates (USMGFSC 230-112, USMGFSC 186-113, and USMGFSC 33-114) were examined and phylogenetically analysed on the basis of partial sequences of the tef1 and tub2 genes. Sequence analysis supported the morphological data, and all isolates were placed within F. proliferatum species. This is the first report on morphological and molecular identification of F. proliferatum isolated from lizards' dermatitis in Iran.
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20
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Al-Hatmi AMS, Bonifaz A, de Hoog GS, Vazquez-Maya L, Garcia-Carmona K, Meis JF, van Diepeningen AD. Keratitis by Fusarium temperatum, a novel opportunist. BMC Infect Dis 2014; 14:588. [PMID: 25388601 PMCID: PMC4234859 DOI: 10.1186/s12879-014-0588-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 10/24/2014] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Fusarium species are among the most common fungi present in the environment and some species have emerged as major opportunistic fungal infection in human. However, in immunocompromised hosts they can be virulent pathogens and can cause death. The pathogenesis of this infection relies on three factors: colonization, tissue damage, and immunosuppression. A novel Fusarium species is reported for the first time from keratitis in an agriculture worker who acquired the infection from plant material of maize. Maize plants are the natural host of this fungus where it causes stalk rot and seeding malformation under temperate and humid climatic conditions. The clinical manifestation, microbiological morphology, physiological features and molecular data are described. METHODS Diagnosis was established by using polymerase chain reaction of fungal DNA followed by sequencing portions of translation elongation factor 1 alpha (TEF1 α) and beta-tubulin (BT2) genes. Susceptibility profiles of this fungus were evaluated using CLSI broth microdilution method. RESULTS The analyses of these two genes sequences support a novel opportunist with the designation Fusarium temperatum. Phylogenetic analyses showed that the reported clinical isolate was nested within the Fusarium fujikuroi species complex. Antifungal susceptibility testing demonstrated that the fungus had low MICs of micafungin (0.031 μg/ml), posaconazole (0.25 μg/ml) and amphotericin B (0.5 μg/ml). CONCLUSION The present case extends the significance of the genus Fusarium as agents of keratitis and underscores the utility of molecular verification of these emerging fungi in the human host.
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Affiliation(s)
- Abdullah M S Al-Hatmi
- />CBS-KNAW Fungal Biodiversity Centre, Utrecht, 3508 AD The Netherlands
- />Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- />Directorate General of Health Services, Ibri Hospital, Ministry of Health, Muscat, Oman
| | | | - G Sybren de Hoog
- />CBS-KNAW Fungal Biodiversity Centre, Utrecht, 3508 AD The Netherlands
- />Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- />Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China
- />Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- />Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China
- />Basic Pathology Department, Federal University of Paraná State, Curitiba, Paraná Brazil
- />King Abdulaziz University, Jeddah, Saudi Arabia
| | | | | | - Jacques F Meis
- />Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
- />Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, The Netherlands
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21
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Kasanah N, Farr LL, Gholipour A, Wedge DE, Hamann MT. Metabolism and resistance of Fusarium spp. to the manzamine alkaloids via a putative retro pictet-spengler reaction and utility of the rational design of antimalarial and antifungal agents. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2014; 16:412-422. [PMID: 24553735 PMCID: PMC4139108 DOI: 10.1007/s10126-014-9557-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Accepted: 10/14/2013] [Indexed: 06/03/2023]
Abstract
As a part of our continuing investigation of the manzamine alkaloids we studied the in vitro activity of the β-carboline containing manzamine alkaloids against Fusarium solani, Fusarium oxysporium, and Fusarium proliferatum by employing several bioassay techniques including one-dimensional direct bioautography, dilution, and plate susceptibility, and microtiter broth assays. In addition, we also studied the metabolism of the manzamine alkaloids by Fusarium spp. in order to facilitate the redesign of the compounds to prevent resistance of Fusarium spp. through metabolism. The present research reveals that the manzamine alkaloids are inactive against Fusarium spp. and the fungi transform manzamines via hydrolysis, reduction, and a retro Pictet-Spengler reaction. This is the first report to demonstrate an enzymatically retro Pictet-Spengler reaction. The results of this study reveal the utility of the rational design of metabolically stable antifungal agents from this class and the development of manzamine alkaloids as antimalarial drugs through the utilization of Fusarium's metabolic products to reconstruct the molecule.
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Affiliation(s)
- Noer Kasanah
- Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, Oxford, MS, USA,
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22
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Schäfer K, Di Pietro A, Gow NAR, MacCallum D. Murine model for Fusarium oxysporum invasive fusariosis reveals organ-specific structures for dissemination and long-term persistence. PLoS One 2014; 9:e89920. [PMID: 24587124 PMCID: PMC3937399 DOI: 10.1371/journal.pone.0089920] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 01/28/2014] [Indexed: 12/04/2022] Open
Abstract
The soil-borne plant pathogen Fusarium oxysporum causes life-threatening invasive fusariosis in immunocompromised individuals. The mechanism of infection in mammalian hosts is largely unknown. In the present study we show that the symptoms of disseminated fusariosis caused by F. oxysporum in immunosuppressed mice are remarkably similar to those reported in humans. Distinct fungal structures were observed inside the host, depending on the infected organ. Invasive hyphae developed in the heart and kidney, causing massive colonization of the organs. By contrast, chlamydospore-like survival structures were found in lung, spleen and liver. Systemically infected mice also developed skin and eye infections, as well as thrombosis and necrosis in the tail. We further show that F. oxysporum can disseminate and persist in the organs of immunocompetent animals, and that these latent infections can lead to lethal systemic fusariosis if the host is later subjected to immunosuppressive treatment.
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Affiliation(s)
- Katja Schäfer
- Departamento de Genética, Universidad de Córdoba, Córdoba, Spain
- * E-mail:
| | | | - Neil A. R. Gow
- Aberdeen Fungal Group, Institute of Medical Sciences, Aberdeen, United Kingdom
| | - Donna MacCallum
- Aberdeen Fungal Group, Institute of Medical Sciences, Aberdeen, United Kingdom
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The N-terminus region of the putative C2H2 transcription factor Ada1 harbors a species-specific activation motif that regulates asexual reproduction in Fusarium verticillioides. Fungal Genet Biol 2013; 62:25-33. [PMID: 24161731 DOI: 10.1016/j.fgb.2013.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 10/08/2013] [Accepted: 10/10/2013] [Indexed: 11/21/2022]
Abstract
Fusarium verticillioides is an important plant pathogenic fungus causing maize ear and stalk rots. In addition, the fungus is directly associated with fumonisin contamination of food and feeds. Here, we report the functional characterization of Ada1, a putative Cys2-His2 zinc finger transcription factor with a high level of similarity to Aspergillus nidulans FlbC, which is required for the activation of the key regulator of conidiation brlA. ADA1 is predicted to encode a protein with two DNA binding motifs at the C terminus and a putative activator domain at the N terminus region. Deletion of the flbC gene in A. nidulans results in "fluffy" cotton-like colonies, with a defect in transition from vegetative growth to asexual development. In this study we show that Ada1 plays a key role in asexual development in F. verticillioides. Conidia production was significantly reduced in the knockout mutant (Δada1), in which aberrant conidia and conidiophores were also observed. We identified genes that are predicted to be downstream of ADA1, based on A. nidulans conidiation signaling pathway. Among them, the deletion of stuA homologue, FvSTUA, resulted in near absence of conidia production. To further investigate the functional conservation of this transcription factor, we complemented the Δada1 strain with A. nidulans flbC, F. verticillioides ADA1, and chimeric constructs. A. nidulans flbC failed to restore conidia production similar to the wild-type level. However, the Ada1N-terminal domain, which contains a putative activator, fused to A. nidulans FlbC C-terminal motif successfully complemented the Δada1 mutant. Taken together, Ada1 is an important transcriptional regulator of asexual development in F. verticillioides and that the N-terminus domain is critical for proper function of this transcription factor.
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Guarro J. Fusariosis, a complex infection caused by a high diversity of fungal species refractory to treatment. Eur J Clin Microbiol Infect Dis 2013; 32:1491-500. [DOI: 10.1007/s10096-013-1924-7] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 07/03/2013] [Indexed: 11/30/2022]
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25
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Disseminated fusariosis secondary to neuroblastoma with fatal outcome. Mycopathologia 2013; 176:233-6. [PMID: 23813153 DOI: 10.1007/s11046-013-9674-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 06/21/2013] [Indexed: 10/26/2022]
Abstract
Disseminated fusariosis is an uncommon clinical condition in immunocompromised patients. We report a fatal case of disseminated fusariosis secondary to neuroblastoma in a male patient, 15 years old, who underwent a bone marrow transplant. The patient was admitted to the pediatric intensive care unit (PICU) of a public hospital in Recife-PE, Brazil, presenting bone marrow aplasia, severe leukopenia, and thrombocytopenia. After 15 days, the patient developed right knee effusion. Synovial fluid and blood samples were analyzed at the Medical Mycology Laboratory of the Federal University of Pernambuco. Mycological diagnosis was based on the presence of hyaline septate hyphae on direct examination and the isolation of Fusarium oxysporum in culture, confirming the case of disseminated fusariosis. In vitro, the isolate showed fluconazole resistance and sensitivity to amphotericin B, anidulafungin, and voriconazole. Therapy with voriconazole in combination with liposomal amphotericin B led to an improved clinical response; however, due to underlying disease complications, the patient progressed to death.
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26
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Tabatabaee A, Mohajernezhadfard Z, Daneshgar F, Mansouri M. Keratomycosis after incidental spillage of vegetative material into the eye: Report of two cases. Oman J Ophthalmol 2013; 6:122-6. [PMID: 24082674 PMCID: PMC3779411 DOI: 10.4103/0974-620x.116659] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Fungal corneal ulcers mostly occur after incidental corneal trauma by plant leaves in farm lands or the use of topical corticosteroids or antibiotics. The infection is more prevalent among farmers and harvesters and in some parts of the world is considered as an occupational disease; however, there have been a few reports on the occurrence of such ulcers in healthy individuals after incidental spillage of vegetative material into the eye. The importance of these ulcers is their long-term and refractory course, which makes the visual prognosis unfavorable in most patients, even after appropriate antifungal therapy or ocular interventions. Herein, we present two rare cases of fungal ulcers caused by incidental spillage of vegetative material into the eye while eating nuts and corn. We also discuss the diagnostic and therapeutic approaches, as well as visual outcome reviewing the relevant literature.
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Affiliation(s)
- Ali Tabatabaee
- Department of Ophthalmology, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Mohajernezhadfard
- Department of Ophthalmology, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Farid Daneshgar
- Department of Ophthalmology, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Mansouri
- Department of Ophthalmology, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
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27
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Gherbawy Y, El-Tayeb M, Maghraby T, Shebany Y, El-Deeb B. Response of antioxidant enzymes and some metabolic activities in wheat to Fusarium spp. Infections. ACTA ACUST UNITED AC 2012. [DOI: 10.1556/aagr.60.2012.4.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Inoculating wheat (cv. Giza 164) with various Fusarium species had different effects on the catalase (CAT), peroxidase (POX) and ascorbate peroxidase (APX) activity in different plant tissues. The CAT activity induced in the shoots of wheat plants by some pathogens (F. merismoides, F. moniliforme, F. poae and F. sambucinum) was relatively higher than that induced by other pathogens. The results showed an increase in POX activity in infected shoots except those inoculated with F. sambucinum, where the POX activity decreased. Inoculating wheat plants with individual Fusarium species or with a mixture of pathogens caused an increase in APX in the shoots, except for those treated with F. poae, where the APX activity decreased. The activity of these antioxidant enzymes thus increased in most cases in the shoot system of wheat plants under Fusarium infection. Investigations on the metabolic activity of wheat plants inouculated with individual Fusarium species or with a mixture of pathogens showed higher contents of all the protein fractions, soluble sugars, total free amino acids and proline. The K+ and Ca2+ concentrations decreased to various extents in different cases. The Na+ content increased in wheat shoots, especially after inoculation with F. merismoides. The results signify that the most serious infection was caused by F. culmorum, F. graminearum and F. oxysporum and by a mixture of all the Fusarium species.
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Affiliation(s)
| | | | - T. Maghraby
- 1 South Valley University Botany Department, Faculty of Science Qena Egypt
| | - Y. Shebany
- 1 South Valley University Botany Department, Faculty of Science Qena Egypt
| | - B. El-Deeb
- 2 Taif University Biological Sciences Department, Faculty of Science Taif Saudi Arabia
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López-Berges MS, Hera C, Sulyok M, Schäfer K, Capilla J, Guarro J, Di Pietro A. The velvet complex governs mycotoxin production and virulence of Fusarium oxysporum on plant and mammalian hosts. Mol Microbiol 2012; 87:49-65. [PMID: 23106229 DOI: 10.1111/mmi.12082] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2012] [Indexed: 01/10/2023]
Abstract
Fungal pathogens provoke devastating losses in agricultural production, contaminate food with mycotoxins and give rise to life-threatening infections in humans. The soil-borne ascomycete Fusarium oxysporum attacks over 100 different crops and can cause systemic fusariosis in immunocompromised individuals. Here we functionally characterized VeA, VelB, VelC and LaeA, four components of the velvet protein complex which regulates fungal development and secondary metabolism. Deletion of veA, velB and to a minor extent velC caused a derepression of conidiation as well as alterations in the shape and size of microconidia. VeA and LaeA were required for full virulence of F. oxysporum on tomato plants and on immunodepressed mice. A critical contribution of velvet consists in promoting chromatin accessibility and expression of the biosynthetic gene cluster for beauvericin, a depsipeptide mycotoxin that functions as a virulence determinant. These results reveal a conserved role of the velvet complex during fungal infection on plants and mammals.
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Dhillon GS, Kaur S, Brar SK, Verma M. Green synthesis approach: extraction of chitosan from fungus mycelia. Crit Rev Biotechnol 2012; 33:379-403. [PMID: 23078670 DOI: 10.3109/07388551.2012.717217] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Chitosan, copolymer of glucosamine and N-acetyl glucosamine is mainly derived from chitin, which is present in cell walls of crustaceans and some other microorganisms, such as fungi. Chitosan is emerging as an important biopolymer having a broad range of applications in different fields. On a commercial scale, chitosan is mainly obtained from crustacean shells rather than from the fungal sources. The methods used for extraction of chitosan are laden with many disadvantages. Alternative options of producing chitosan from fungal biomass exist, in fact with superior physico-chemical properties. Researchers around the globe are attempting to commercialize chitosan production and extraction from fungal sources. Chitosan extracted from fungal sources has the potential to completely replace crustacean-derived chitosan. In this context, the present review discusses the potential of fungal biomass resulting from various biotechnological industries or grown on negative/low cost agricultural and industrial wastes and their by-products as an inexpensive source of chitosan. Biologically derived fungal chitosan offers promising advantages over the chitosan obtained from crustacean shells with respect to different physico-chemical attributes. The different aspects of fungal chitosan extraction methods and various parameters having an effect on the yield of chitosan are discussed in detail. This review also deals with essential attributes of chitosan for high value-added applications in different fields.
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Prados-Rosales RC, Roldán-Rodríguez R, Serena C, López-Berges MS, Guarro J, Martínez-del-Pozo Á, Di Pietro A. A PR-1-like protein of Fusarium oxysporum functions in virulence on mammalian hosts. J Biol Chem 2012; 287:21970-9. [PMID: 22553200 DOI: 10.1074/jbc.m112.364034] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The pathogenesis-related PR-1-like protein family comprises secreted proteins from the animal, plant, and fungal kingdoms whose biological function remains poorly understood. Here we have characterized a PR-1-like protein, Fpr1, from Fusarium oxysporum, an ubiquitous fungal pathogen that causes vascular wilt disease on a wide range of plant species and can produce life-threatening infections in immunocompromised humans. Fpr1 is secreted and proteolytically processed by the fungus. The fpr1 gene is required for virulence in a disseminated immunodepressed mouse model, and its function depends on the integrity of the proposed active site of PR-1-like proteins. Fpr1 belongs to a gene family that has expanded in plant pathogenic Sordariomycetes. These results suggest that secreted PR-1-like proteins play important roles in fungal pathogenicity.
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Affiliation(s)
- Rafael C Prados-Rosales
- Departamento de Genetica, Facultad de Ciencias and Campus de Excelencia Internacional Agroalimentario ceiA3, Universidad de Cordoba, 14071 Cordoba, Spain
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31
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Bernal-Martínez L, Buitrago MJ, Castelli MV, Rodríguez-Tudela JL, Cuenca-Estrella M. Detection of invasive infection caused byFusarium solaniand non-Fusarium solanispecies using a duplex quantitative PCR-based assay in a murine model of fusariosis. Med Mycol 2012; 50:270-5. [DOI: 10.3109/13693786.2011.604047] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Soundararajan P, Sakkiah S, Sivanesan I, Lee KW, Jeong BR. Macromolecular Docking Simulation to Identify Binding Site of FGB1 for Antifungal Compounds. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.10.3675] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Galleria mellonella as model host for the trans-kingdom pathogen Fusarium oxysporum. Fungal Genet Biol 2011; 48:1124-9. [PMID: 21907298 DOI: 10.1016/j.fgb.2011.08.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Accepted: 08/24/2011] [Indexed: 11/23/2022]
Abstract
Fusarium oxysporum, the causal agent of vascular wilt disease, affects a wide range of plant species and can produce disseminated infections in humans. F. oxysporum f. sp. lycopersici isolate FGSC 9935 causes disease both on tomato plants and immunodepressed mice, making it an ideal model for the comparative analysis of fungal virulence on plant and animal hosts. Here we tested the ability of FGSC 9935 to cause disease in the greater wax moth Galleria mellonella, an invertebrate model host that is widely used for the study of microbial human pathogens. Injection of living but not of heat-killed microconidia into the hemocoel of G. mellonella larvae resulted in dose-dependent killing both at 30°C and at 37°C. Fluorescence microscopy of larvae inoculated with a F. oxysporum transformant expressing GFP revealed hyphal proliferation within the hemocoel, interaction with G. mellonella hemocytes, and colonization of the killed insects by the fungus. Fungal gene knockout mutants previously tested in the tomato and immunodepressed mouse systems displayed a good correlation in virulence between the Galleria and the mouse model. Thus, Galleria represents a useful non-vertebrate infection model for studying virulence mechanisms of F. oxysporum on animal hosts.
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Banerji JS, Singh J C. Cutaneous Fusarium infection in a renal transplant recipient: a case report. J Med Case Rep 2011; 5:205. [PMID: 21612606 PMCID: PMC3123643 DOI: 10.1186/1752-1947-5-205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Accepted: 05/25/2011] [Indexed: 11/10/2022] Open
Abstract
Introduction Fungal infections in the immunocompromised host are fairly common. Of the mycoses, Fusarium species are an emerging threat. Fusarium infections have been reported in solid organ transplants, with three reports of the infection in patients who had received renal transplants. To the best of our knowledge, this is the first case of an isolated cutaneous lesion as the only form of infection. Case presentation We report the case of a 45-year-old South Indian man who presented with localized cutaneous Fusarium infection following a renal transplant. Conclusion In an immunocompromised patient, even an innocuous lesion needs to be addressed with the initiation of prompt treatment.
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Affiliation(s)
- John S Banerji
- Department of Urology, Unit 1, Christian Medical College, Vellore, India.
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Jain P, Gupta V, Misra A, Gaur R, Bajpai V, Issar S. Current Status of Fusarium Infection in Human and Animal. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ajava.2011.201.227] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Carneiro HA, Coleman JJ, Restrepo A, Mylonakis E. Fusarium infection in lung transplant patients: report of 6 cases and review of the literature. Medicine (Baltimore) 2011; 90:69-80. [PMID: 21200188 PMCID: PMC3750960 DOI: 10.1097/md.0b013e318207612d] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Fusarium is a fungal pathogen of immunosuppressed lung transplant patients associated with a high mortality in those with severe and persistent neutropenia. The principle portal of entry for Fusarium species is the airways, and lung involvement almost always occurs among lung transplant patients with disseminated infection. In these patients, the immunoprotective mechanisms of the transplanted lungs are impaired, and they are, therefore, more vulnerable to Fusarium infection. As a result, fusariosis occurs in up to 32% of lung transplant patients. We studied fusariosis in 6 patients following lung transplantation who were treated at Massachusetts General Hospital during an 8-year period and reviewed 3 published cases in the literature. Cases were identified by the microbiology laboratory and through discharge summaries. Patients presented with dyspnea, fever, nonproductive cough, hemoptysis, and headache. Blood tests showed elevated white blood cell counts with granulocytosis and elevated inflammatory markers. Cultures of Fusarium were isolated from bronchoalveolar lavage, blood, and sputum specimens.Treatments included amphotericin B, liposomal amphotericin B, caspofungin, voriconazole, and posaconazole, either alone or in combination. Lung involvement occurred in all patients with disseminated disease and it was associated with a poor outcome. The mortality rate in this group of patients was high (67%), and of those who survived, 1 patient was treated with a combination of amphotericin B and voriconazole, 1 patient with amphotericin B, and 1 patient with posaconazole. Recommended empirical treatment includes voriconazole, amphotericin B or liposomal amphotericin B first-line, and posaconazole for refractory disease. High-dose amphotericin B is recommended for treatment of most cases of fusariosis. The echinocandins (for example, caspofungin, micafungin, anidulafungin) are generally avoided because Fusarium species have intrinsic resistance to them. Treatment should ideally be based on the Fusarium isolate, susceptibility testing, and host-specific factors. Prognosis of fusariosis in the immunocompromised is directly related to a patient's immune status. Prevention of Fusarium infection is recommended with aerosolized amphotericin B deoxycholate, which also has activity against other important fungi.
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Affiliation(s)
- Herman A Carneiro
- From Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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Zribi J, Boudaya S, Sallemi A, Masmoudi A, Chaabène H, Makni F, Ayadi A, Turki H. Fusariose cutanée atypique chez un sujet immunocompétent. Ann Dermatol Venereol 2010; 137:630-4. [DOI: 10.1016/j.annder.2010.04.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Accepted: 04/30/2010] [Indexed: 01/30/2023]
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38
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Debourgogne A, Gueidan C, Hennequin C, Contet-Audonneau N, de Hoog S, Machouart M. Development of a new MLST scheme for differentiation of Fusarium solani Species Complex (FSSC) isolates. J Microbiol Methods 2010; 82:319-23. [DOI: 10.1016/j.mimet.2010.07.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 07/05/2010] [Accepted: 07/06/2010] [Indexed: 10/19/2022]
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39
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Gonçalves FLT, Bauer H, Cardoso MRA, Pukinskas S, Matos D, Melhem M, Puxbaum H. Indoor and outdoor atmospheric fungal spores in the São Paulo metropolitan area (Brazil): species and numeric concentrations. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2010; 54:347-355. [PMID: 20033736 DOI: 10.1007/s00484-009-0284-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 11/04/2009] [Accepted: 11/04/2009] [Indexed: 05/28/2023]
Abstract
The aim of this study was to estimate the indoor and outdoor concentrations of fungal spores in the Metropolitan Area of Sao Paulo (MASP), collected at different sites in winter/spring and summer seasons. The techniques adopted included cultivation (samples collected with impactors) and microscopic enumeration (samples collected with impingers). The overall results showed total concentrations of fungal spores as high as 36,000 per cubic meter, with a large proportion of non culturable spores (around 91% of the total). Penicillium sp. and Aspergillus sp. were the dominant species both indoors and outdoors, in all seasons tested, occurring in more than 30% of homes at very high concentrations of culturable airborne fungi [colony forming units(CFU) m(-3)]. There was no significant difference between indoor and outdoor concentrations. The total fungal spore concentration found in winter was 19% higher than that in summer. Heat and humidity were the main factors affecting fungal growth; however, a non-linear response to these factors was found. Thus, temperatures below 16 degrees C and above 25 degrees C caused a reduction in the concentration (CFU m(-3)) of airborne fungi, which fits with MASP climatalogy. The same pattern was observed for humidity, although not as clearly as with temperature given the usual high relative humidity (above 70%) in the study area. These results are relevant for public health interventions that aim to reduce respiratory morbidity among susceptible populations.
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Affiliation(s)
- Fábio Luiz Teixeira Gonçalves
- Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, Rua do Matão, 1226. Cidade Universitária, 055080-090, São Paulo, Brazil.
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40
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Li X, Yu HY, Lin YF, Teng HM, Du L, Ma GG. Morphological changes of Fusarium oxysporum induced by CF66I, an antifungal compound from Burkholderia cepacia. Biotechnol Lett 2010; 32:1487-95. [DOI: 10.1007/s10529-010-0316-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2010] [Accepted: 05/11/2010] [Indexed: 11/28/2022]
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41
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Jossi M, Ambrosioni J, Macedo-Vinas M, Garbino J. Invasive fusariosis with prolonged fungemia in a patient with acute lymphoblastic leukemia: case report and review of the literature. Int J Infect Dis 2010; 14:e354-6. [DOI: 10.1016/j.ijid.2009.05.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2009] [Revised: 04/17/2009] [Accepted: 05/02/2009] [Indexed: 10/20/2022] Open
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Gaur S, Rajgopal A, Ashbee R. A successfully treated case of peritonitis due to Fusarium dimerum. J Infect 2010; 61:86-8. [PMID: 20359497 DOI: 10.1016/j.jinf.2010.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 01/21/2010] [Accepted: 03/16/2010] [Indexed: 10/19/2022]
Abstract
SUMMARY Fungal peritonitis is a rare but serious complication of continuous ambulatory peritoneal dialysis (CAPD). We report the first known case of CAPD peritonitis due to Fusarum dimerum successfully treated with antifungals and catheter removal.
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Affiliation(s)
- Soma Gaur
- Royal Gwent Hospital, Newport, Wales, UK.
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43
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Kantarcioglu AS, Summerbell RC, Sutton DA, Yücell A, Sarikaya E, Kaner G, Iscimen A, Altas K. A dark strain in theFusarium solanispecies complex isolated from primary subcutaneous sporotrichioid lesions associated with traumatic inoculation via a rose bush thorn. Med Mycol 2010; 48:103-9. [DOI: 10.3109/13693780902829250] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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44
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The genome of Nectria haematococca: contribution of supernumerary chromosomes to gene expansion. PLoS Genet 2009; 5:e1000618. [PMID: 19714214 PMCID: PMC2725324 DOI: 10.1371/journal.pgen.1000618] [Citation(s) in RCA: 313] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Accepted: 07/27/2009] [Indexed: 11/19/2022] Open
Abstract
The ascomycetous fungus Nectria haematococca, (asexual name Fusarium solani), is a member of a group of >50 species known as the "Fusarium solani species complex". Members of this complex have diverse biological properties including the ability to cause disease on >100 genera of plants and opportunistic infections in humans. The current research analyzed the most extensively studied member of this complex, N. haematococca mating population VI (MPVI). Several genes controlling the ability of individual isolates of this species to colonize specific habitats are located on supernumerary chromosomes. Optical mapping revealed that the sequenced isolate has 17 chromosomes ranging from 530 kb to 6.52 Mb and that the physical size of the genome, 54.43 Mb, and the number of predicted genes, 15,707, are among the largest reported for ascomycetes. Two classes of genes have contributed to gene expansion: specific genes that are not found in other fungi including its closest sequenced relative, Fusarium graminearum; and genes that commonly occur as single copies in other fungi but are present as multiple copies in N. haematococca MPVI. Some of these additional genes appear to have resulted from gene duplication events, while others may have been acquired through horizontal gene transfer. The supernumerary nature of three chromosomes, 14, 15, and 17, was confirmed by their absence in pulsed field gel electrophoresis experiments of some isolates and by demonstrating that these isolates lacked chromosome-specific sequences found on the ends of these chromosomes. These supernumerary chromosomes contain more repeat sequences, are enriched in unique and duplicated genes, and have a lower G+C content in comparison to the other chromosomes. Although the origin(s) of the extra genes and the supernumerary chromosomes is not known, the gene expansion and its large genome size are consistent with this species' diverse range of habitats. Furthermore, the presence of unique genes on supernumerary chromosomes might account for individual isolates having different environmental niches.
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Mousavi S, Esfandiarpour I, Salari S, Shokri H. Onychomycosis due to Fusarium spp. in patient with squamous cell carcinoma: A case report from Kerman, Iran. J Mycol Med 2009. [DOI: 10.1016/j.mycmed.2009.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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Less-frequent Fusarium species of clinical interest: correlation between morphological and molecular identification and antifungal susceptibility. J Clin Microbiol 2009; 47:1463-8. [PMID: 19321723 DOI: 10.1128/jcm.02467-08] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Forty-eight Fusarium isolates morphologically identified as belonging to seven species of clinical interest (i.e., Fusarium chlamydosporum, Fusarium dimerum, Fusarium incarnatum, Fusarium napiforme, Fusarium nygamai, Fusarium proliferatum, and Fusarium sacchari) were characterized molecularly by the analysis of the sequences of the TUB region of the beta-tubulin gene. F. chlamydosporum and F. dimerum were the most genetically heterogeneous species. A high degree of correlation between the morphological and molecular identification was shown among the isolates studied. A table with the key morphological features for the identification of these Fusarium species is provided. The antifungal susceptibilities of the Fusarium isolates to 11 antifungal drugs were tested; terbinafine was the most active drug against all the species tested with the exception of F. incarnatum, for which amphotericin B was the most active.
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47
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Li X, Quan CS, Yu HY, Wang JH, Fan SD. Assessment of antifungal effects of a novel compound from Burkholderia cepacia against Fusarium solani by fluorescent staining. World J Microbiol Biotechnol 2008. [DOI: 10.1007/s11274-008-9861-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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O'Donnell K, Sutton DA, Fothergill A, McCarthy D, Rinaldi MG, Brandt ME, Zhang N, Geiser DM. Molecular phylogenetic diversity, multilocus haplotype nomenclature, and in vitro antifungal resistance within the Fusarium solani species complex. J Clin Microbiol 2008; 46:2477-90. [PMID: 18524963 PMCID: PMC2519483 DOI: 10.1128/jcm.02371-07] [Citation(s) in RCA: 287] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2007] [Revised: 04/17/2008] [Accepted: 05/24/2008] [Indexed: 11/20/2022] Open
Abstract
Members of the species-rich Fusarium solani species complex (FSSC) are responsible for approximately two-thirds all fusarioses of humans and other animals. In addition, many economically important phytopathogenic species are nested within this complex. Due to their increasing clinical relevance and because most of the human pathogenic and plant pathogenic FSSC lack Latin binomials, we have extended the multilocus haplotype nomenclatural system introduced in a previous study (D. C. Chang, G. B. Grant, K. O'Donnell, K. A. Wannemuehler, J. Noble-Wang, C. Y. Rao, L. M. Jacobson, C. S. Crowell, R. S. Sneed, F. M. T. Lewis, J. K. Schaffzin, M. A. Kainer, C. A. Genese, E. C. Alfonso, D. B. Jones, A. Srinivasan, S. K. Fridkin, and B. J. Park, JAMA 296:953-963, 2006) to all 34 species within the medically important FSSC clade 3 to facilitate global epidemiological studies. The typing scheme is based on polymorphisms in portions of the following three genes: the internal transcribed spacer region and domains D1 plus D2 of the nuclear large-subunit rRNA, the translation elongation factor 1 alpha gene (EF-1alpha), and the second largest subunit of RNA polymerase II gene (RPB2). Of the 251 isolates subjected to multilocus DNA sequence typing, 191 sequence types were differentiated, and these were distributed among three strongly supported clades designated 1, 2, and 3. All of the mycosis-associated isolates were restricted to FSSC clade 3, as previously reported (N. Zhang, K. O'Donnell, D. A. Sutton, F. A Nalim, R. C. Summerbell, A. A. Padhye, and D. M. Geiser, J. Clin. Microbiol. 44:2186-2190, 2006), and these represent at least 20 phylogenetically distinct species. Analyses of the combined DNA sequence data by use of two separate phylogenetic methods yielded the most robust hypothesis of evolutionary relationships and genetic diversity within the FSSC to date. The in vitro activities of 10 antifungals tested against 19 isolates representing 18 species that span the breadth of the FSSC phylogeny show that members of this complex are broadly resistant to these drugs.
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Affiliation(s)
- Kerry O'Donnell
- Microbial Genomics and Bioprocessing Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, 1815 North University Street, Peoria, IL 61604-3999, USA.
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49
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Castellá G, Cano J, Guarro J, Cabañes FJ. DNA fingerprinting of Fusarium solani isolates related to a cutaneous infection in a sea turtle. Med Mycol 2008. [DOI: 10.1111/j.1365-280x.1999.00223.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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50
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KAC G, PIRIOU P, GUÉHO E, ROUX P, TRÉMOULET J, DENIS M, JUDET T. Osteoarthritis caused by Neocosmospora vasinfecta. Med Mycol 2008. [DOI: 10.1111/j.1365-280x.1999.00216.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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