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1.
Clin Microbiol Rev ; 36(4): e0015922, 2023 12 20.
Article in English | MEDLINE | ID: mdl-37937988

ABSTRACT

Invasive fusariosis is a serious invasive fungal disease, affecting immunocompetent and, more frequently, immunocompromised patients. Localized disease is the typical clinical form in immunocompetent patients. Immunocompromised hosts at elevated risk of developing invasive fusariosis are patients with acute leukemia receiving chemotherapeutic regimens for remission induction, and those undergoing allogeneic hematopoietic cell transplant. In this setting, the infection is usually disseminated with positive blood cultures, multiple painful metastatic skin lesions, and lung involvement. Currently available antifungal agents have poor in vitro activity against Fusarium species, but a clear-cut correlation between in vitro activity and clinical effectiveness does not exist. The outcome of invasive fusariosis is largely dependent on the resolution of immunosuppression, especially neutrophil recovery in neutropenic patients.


Subject(s)
Fusariosis , Fusarium , Hematopoietic Stem Cell Transplantation , Humans , Fusariosis/drug therapy , Fusariosis/microbiology , Antifungal Agents/therapeutic use , Immunocompromised Host
2.
Emerg Infect Dis ; 30(2)2024 Feb.
Article in English | MEDLINE | ID: mdl-38270146

ABSTRACT

Invasive fusariosis can be life-threatening, especially in immunocompromised patients who require intensive care unit (ICU) admission. We conducted a multicenter retrospective study to describe clinical and biologic characteristics, patient outcomes, and factors associated with death and response to antifungal therapy. We identified 55 patients with invasive fusariosis from 16 ICUs in France during 2002----2020. The mortality rate was high (56%). Fusariosis-related pneumonia occurred in 76% of patients, often leading to acute respiratory failure. Factors associated with death included elevated sequential organ failure assessment score at ICU admission or history of allogeneic hematopoietic stem cell transplantation or hematologic malignancies. Neither voriconazole treatment nor disseminated fusariosis were strongly associated with response to therapy. Invasive fusariosis can lead to multiorgan failure and is associated with high mortality rates in ICUs. Clinicians should closely monitor ICU patients with a history of hematologic malignancies or stem cell transplantation because of higher risk for death.


Subject(s)
Fusariosis , Hematologic Neoplasms , Humans , Fusariosis/drug therapy , Fusariosis/epidemiology , Retrospective Studies , Intensive Care Units , France/epidemiology , Hematologic Neoplasms/complications , Hematologic Neoplasms/therapy , Multicenter Studies as Topic
3.
Infection ; 2024 Aug 26.
Article in English | MEDLINE | ID: mdl-39186217

ABSTRACT

In allogenic stem cell recipients, invasive fungal disease is a common yet dreaded complication with high mortality. Among these, fusariosis is especially complex to treat due to high intrinsic resistance and few antimycotic options, requiring close cooperation of all involved departments. We here report an instructive case of disseminated fusariosis after allogenic stem cell transplantation with fatal outcome despite maximum treatment.

4.
J Clin Immunol ; 43(3): 647-652, 2023 04.
Article in English | MEDLINE | ID: mdl-36504258

ABSTRACT

Dominant negative (DN) mutations in signal transducer and activator of transcription 3 (STAT3) are known to cause hyper-IgE syndrome, a rare primary immunodeficiency. STAT3 DN patients are prone to develop fungal infections, including chronic mucocutaneous candidiasis due to impaired IL-17-mediated immunity, and pulmonary aspergillosis. Despite having preserved phagocyte functions, STAT3 DN patients present connective tissue abnormalities and a defect in the immunological skin barrier. Fusarium species are ubiquitous molds, whose potential to infect humans depends on the host's innate and cellular immune status. Our aim was to describe four STAT3 DN patients with fusariosis confined to the skin. Medical records were reviewed and summarized. Four patients, aged 4, 11, 30, and 33 years, presented with chronic skin lesions which started in the extremities. Two patients had remote lesions, and none had systemic involvement. Skin biopsies showed mycelial threads with deep inflammatory-occasionally granulomatous-infiltrates, reaching the dermis; cultures grew Fusarium solani. Response to treatment was heterogeneous, often requiring multimodal therapies, including topical antifungal preparations. In this work, we describe primary invasive cutaneous fusariosis as a syndromic entity in four STAT3 DN patients.


Subject(s)
Fusariosis , Job Syndrome , Humans , Fusariosis/drug therapy , Fusariosis/microbiology , Job Syndrome/genetics , STAT3 Transcription Factor/genetics , Skin/microbiology , Antifungal Agents/therapeutic use
5.
Med Mycol ; 61(2)2023 Feb 03.
Article in English | MEDLINE | ID: mdl-36758968

ABSTRACT

In France, onychomycoses represent about 30% of superficial mycoses seen by dermatologists. In recent years, an increased number of mycoses have been observed due to non-dermatophytic moulds. The purpose of this study was to evaluate the epidemiological profile of identified superficial fungal infections in the Laboratory of Parasitology-Mycology of the University Hospital of Nice over a 2-year period. A retrospective study was performed from the nail, skin, and scalp samples of patients analyzed from January 2018 to December 2019. In this study, 3074 samples (54.2% nails, 39.7% skin, and 6.1% scalp) were analyzed representing 1922 patients. Among them, 809 (42.1%) patients were sampled by dermatologists and 1113 (57.9%) were sampled by our experts in the clinical unit of the University Hospital of Nice. In total, 1159 (37.7%) samples had a positive culture (1195 strains identified) including 712 (59.6%) dermatophytes, 345 (28.9%) yeasts, and 138 (11.5%) other filamentous moulds. Trichophyton rubrum was the main dermatophyte (563; 47.1%) followed by T. interdigitale (84; 7.0%), and T. soudanense (25; 2.1%). Yeasts were mostly represented by Candida albicans (155; 13.0%). Among the other moulds, Fusarium sp. was the most isolated (61; 5.1%). Dermatophytes stay predominant in superficial fungal infections where the anthropophilic species T. rubrum was found in almost half of the positive cultures. Interestingly, moulds represented an important part of infections in our population. This study highlights the increasing share of Fusarium sp. superficial fungal infection in our patients' population, perhaps requiring a major therapeutic adaptation in the years to come.


We assessed the epidemiological profile of superficial fungal infections in the Laboratory of Parasitology­Mycology of the Hospital of Nice, over a 2-year period. Among our samples, dermatophytes remain predominant, mainly the species Trichophyton rubrum and we had a large proportion of Fusarium.


Subject(s)
Dermatomycoses , Fusariosis , Fusarium , Onychomycosis , Animals , Fusariosis/epidemiology , Fusariosis/veterinary , Retrospective Studies , Onychomycosis/epidemiology , Onychomycosis/microbiology , Onychomycosis/veterinary , Dermatomycoses/epidemiology , Dermatomycoses/microbiology , Dermatomycoses/veterinary , Yeasts , France/epidemiology
6.
Med Mycol ; 61(12)2023 Dec 01.
Article in English | MEDLINE | ID: mdl-37944000

ABSTRACT

Fusarium species represent an opportunistic fungal pathogen. The data in Mexico about Fusarium infections in humans are scarce. Here, we present a retrospective series of patients with a confirmed diagnosis of fusariosis in eight different hospitals in Mexico from January 2010 to December 2019. The diagnosis of proven fusariosis was made according to the European Organization for Research and Treatment of Cancer and the Mycoses Study Group Education and Research Consortium (EORT/MSG) criteria. A total of 49 cases were identified in our series. Most patients had burn injuries (49%), and 37% had hematological malignancies. Most patients had fire injuries (40%), followed by electric injuries (8%), febrile neutropenia (10%), and pancytopenia (6%). Patients had skin and soft tissue involvement in 49%, followed by blood culture isolation and biopsies from different sites of the body (lung, sinuses, bone tissue, and eyes). Febrile neutropenia (10%) and fungemia (8%) were the most common clinical syndromes in immunosuppressed patients. Most patients received monotherapy (67%), where voriconazole was used in 30% of the cases, followed by conventional amphotericin B (16%), and lipidic formulations of amphotericin B in 10% (either liposomal amphotericin B or amphotericin B lipid complex). Combination therapy was used in 20% of the cases, and the most common combination therapy was triazole plus any lipidic formulation of amphotericin B (10%). Mortality related to Fusarium infection occurred in 22% of patients. Fusariosis is a serious threat. Burn injuries and hematologic malignancies represent the most common causes of infection in this small series from Mexico.


This study describes the epidemiological characteristics of patients with fusariosis from a multicenter cohort in Mexico. These findings provide information from this invasive fungal disease that threatens different countries in Latin America.


Subject(s)
Burns , Febrile Neutropenia , Fusariosis , Fusarium , Hematologic Neoplasms , Humans , Fusariosis/drug therapy , Fusariosis/epidemiology , Fusariosis/veterinary , Amphotericin B/therapeutic use , Antifungal Agents/therapeutic use , Retrospective Studies , Mexico/epidemiology , Voriconazole/therapeutic use , Hematologic Neoplasms/veterinary , Burns/complications , Burns/epidemiology , Burns/veterinary , Febrile Neutropenia/drug therapy , Febrile Neutropenia/veterinary
7.
Mycoses ; 66(3): 211-218, 2023 Mar.
Article in English | MEDLINE | ID: mdl-36349480

ABSTRACT

BACKGROUND: Invasive fusariosis mainly affects immunocompromised patients including haematopoietic stem cell transplant recipients and those with haematologic malignancy. There are limited studies on invasive fusariosis in the Asia-Pacific region. OBJECTIVE: To describe the clinical characteristics and outcomes of invasive and non-invasive fusariosis in South Korea. PATIENTS/METHODS: From 2005 to 2020, patients with fusariosis who met the revised European Organisation for Research and Treatment of Cancer and the Mycoses Study Group criteria for the definition of proven or probable invasive fusariosis, and those with non-invasive fusariosis were retrospectively reviewed in a tertiary medical centre in Seoul, South Korea. RESULTS: Overall, 26 and 75 patients had invasive and non-invasive fusariosis, respectively. Patients with invasive fusariosis commonly had haematologic malignancy (62%), were solid organ transplant recipients (23%), and had a history of immunosuppressant usage (81%). In non-invasive fusariosis, diabetes mellitus (27%) and solid cancer (20%) were common underlying conditions. Disseminated fusariosis (54%) and invasive pulmonary disease (23%) were the most common clinical manifestations of invasive fusariosis; skin infection (48%) and keratitis (27%) were the most common manifestations of non-invasive fusariosis. Twenty-eight-day and in-hospital mortalities were high in invasive fusariosis (40% and 52%, respectively). In multivariate analysis, invasive fusariosis (adjusted odds ratio, 9.6; 95% confidence interval 1.3-70.8; p = .03) was an independent risk factor for 28-day mortality. CONCLUSIONS: Patients with invasive fusariosis were frequently immunocompromised, and more than half had disseminated fusariosis. Invasive fusariosis was associated with poor prognosis.


Subject(s)
Fusariosis , Fusarium , Hematologic Neoplasms , Humans , Fusariosis/drug therapy , Fusariosis/epidemiology , Fusariosis/etiology , Antifungal Agents/therapeutic use , Retrospective Studies , Hematologic Neoplasms/complications , Hematologic Neoplasms/drug therapy , Immunocompromised Host , Republic of Korea/epidemiology
8.
Pediatr Dermatol ; 40(3): 503-506, 2023.
Article in English | MEDLINE | ID: mdl-36334032

ABSTRACT

Fusarium is a polyphyletic genus of plant pathogens, members of which can cause opportunistic human infections with varying superficial and systemic presentations, including disseminated infections which typically occur in immunocompromised patients and have a poor prognosis. Treatment is challenging due to intrinsic resistance to many antifungal agents, and antifungal susceptibility testing is therefore essential. Early suspicion, isolation of the organism, and prompt initiation of management are crucial to improving survival. We present a case of disseminated Bisifusarium infection following toxic epidermal necrolysis in a child with B-cell acute lymphoblastic leukemia, successfully treated with liposomal amphotericin B, voriconazole, flucytosine, and terbinafine.


Subject(s)
Fusariosis , Fusarium , Precursor B-Cell Lymphoblastic Leukemia-Lymphoma , Stevens-Johnson Syndrome , Humans , Child , Fusariosis/diagnosis , Fusariosis/drug therapy , Fusariosis/etiology , Stevens-Johnson Syndrome/diagnosis , Stevens-Johnson Syndrome/drug therapy , Stevens-Johnson Syndrome/etiology , Antifungal Agents/therapeutic use , Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/diagnosis , Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/drug therapy , Immunocompromised Host
9.
Mycopathologia ; 188(6): 973-981, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37653167

ABSTRACT

INTRODUCTION: Fusariosis of the central nervous system (CNS) is extremely uncommon. Treatment and outcome data from previously published cases may provide some guidance in light of the ongoing fungal meningitis outbreak in 2023 involving Fusarium spp. in the United States and Mexico. METHODS: We reviewed the published literature describing cases of invasive fusariosis of the (CNS) that included data on patient demographic characteristics, treatment, and outcome. RESULTS: Twenty-six cases met inclusion criteria. The mean age was 36 years, 55% involved females, 60% had underlying hematologic malignancy, and another 16% were on immunosuppressants. The majority of infections were from Fusarium solani species complex. Overall 72% of patients died. The majority received monotherapy with amphotericin B, although some received voriconazole monotherapy or combination therapy with amphotericin B plus voriconazole with or without adjuvant surgery. Among the survivors, 3 received amphotericin B monotherapy, 2 voriconazole monotherapy, 1 combination therapy of both, and one surgery only. CONCLUSION: The overall mortality rate in published cases of fusariosis of the CNS was high, although-unlike during the current outbreak-the preponderance of patients were severely immunocompromised. While historically the majority were treated with amphotericin B monotherapy, some recent patients were treated with voriconazole monotherapy or combination therapy with amphotericin B plus voriconazole. Current guidelines recommend monotherapy with voriconazole or lipid formulations of amphotericin B or combination of both for the treatment of invasive fusariosis, which is in line with the findings from our literature review and should be considered during the ongoing 2023 outbreak.


Subject(s)
Fusariosis , Fusarium , Female , Humans , United States/epidemiology , Adult , Fusariosis/drug therapy , Fusariosis/epidemiology , Fusariosis/microbiology , Voriconazole/therapeutic use , Amphotericin B/therapeutic use , Antifungal Agents/therapeutic use , Mexico/epidemiology , Central Nervous System
10.
Antimicrob Agents Chemother ; 66(7): e0038022, 2022 07 19.
Article in English | MEDLINE | ID: mdl-35670592

ABSTRACT

Invasive pulmonary aspergillosis (IPA), invasive mucormycosis (IM), and invasive fusariosis (IF) are associated with high mortality and morbidity. Fosmanogepix (FMGX) is a first-in-class antifungal in clinical development with demonstrated broad-spectrum activity in animal models of infections. We sought to evaluate the benefit of combination therapy of FMGX plus liposomal amphotericin B (L-AMB) in severe delayed-treatment models of murine IPA, IM, and IF. While FMGX was equally as effective as L-AMB in prolonging the survival of mice infected with IPA, IM, or IF, combination therapy was superior to monotherapy in all three models. These findings were validated by greater reductions in the tissue fungal burdens (determined by quantitative PCR) of target organs in all three models versus the burdens in infected vehicle-treated (placebo) or monotherapy-treated mice. In general, histopathological examination of target organs corroborated the findings for fungal tissue burdens among all treatment arms. Our results show that treatment with the combination of FMGX plus L-AMB demonstrated high survival rates and fungal burden reductions in severe animal models of invasive mold infections, at drug exposures in mice similar to those achieved clinically. These encouraging results warrant further investigation of the FMGX-plus-L-AMB combination treatment for severely ill patients with IPA, IM, and IF.


Subject(s)
Fusariosis , Invasive Pulmonary Aspergillosis , Mucormycosis , Amphotericin B/therapeutic use , Animals , Antifungal Agents/therapeutic use , Fungi , Fusariosis/drug therapy , Invasive Pulmonary Aspergillosis/drug therapy , Mice , Mucormycosis/drug therapy
11.
Med Mycol ; 60(9)2022 Sep 05.
Article in English | MEDLINE | ID: mdl-36044994

ABSTRACT

Fusarium spp. are plant pathogens and opportunistic pathogens in severely immunocompromised (hematological malignancy, neutropenia, solid organ transplantation, etc.) and severely burned patients. Invasive fusariosis often disseminates and mortality remains high partly due to delayed diagnosis in the absence of a positive culture. The aim of our study is to design a quantitative PCR (qPCR) assay and evaluate the detection of Fusarium spp. DNA for early diagnosis of invasive infection. A qPCR assay was designed and optimized to identify all Fusarium species complex and secondarily evaluated on patient samples. A total of 81 blood samples from 15 patients diagnosed with proven invasive fusariosis from 9 centers in France were retrospectively tested. Circulating DNA was detected in 14 patients out of 15 (sensitivity of 93% [95% Confidence Interval (CI95), 70.1-99.7]). Detection was possible up to 18 days (median 6 days) before the diagnosis was confirmed by positive blood culture or biopsy. By comparison serum galactomannan and ß-D-glucan were positive in 7.1 and 58.3% of patients respectively. qPCR was negative for all patients with other invasive fungal diseases (IFD) tested (n = 12) and IFD-free control patients (n = 40). No cross-reactions were detected using DNA extracted from 81 other opportunistic fungi. We developed and validated a pan-Fusarium qPCR assay in serum/plasma with high sensitivity, specificity, and reproducibility that could facilitate early diagnosis and treatment monitoring of invasive fusariosis. LAY ABSTRACT: Fusariosis ranks third among invasive mould infections. It is frequently diagnosed late due to the lack of specific tools. We designed and evaluated a new qPCR assay with high sensitivity and specificity allowing detection of Fusarium DNA in serum samples up to 18 days before conventional diagnosis.


Subject(s)
Cell-Free Nucleic Acids , Fusariosis , Fusarium , Invasive Fungal Infections , Animals , Antifungal Agents/therapeutic use , Fusariosis/microbiology , Fusariosis/veterinary , Fusarium/genetics , Invasive Fungal Infections/diagnosis , Invasive Fungal Infections/drug therapy , Invasive Fungal Infections/veterinary , Reproducibility of Results , Retrospective Studies
12.
Lasers Med Sci ; 37(3): 1651-1665, 2022 Apr.
Article in English | MEDLINE | ID: mdl-35094176

ABSTRACT

The eye is a light-receiving organ and has anatomical advantages to accept phototherapy. Fungi colonizing on the eyes, which cause ocular mycoses, are affected by daily blue light and could easily accept additional light irritation. Ocular mycoses are recalcitrant and blindness-causing eye diseases, and antifungal agent treatments are insufficient. Our team previously found that blue light could inhibit Fusarium solani hyphal growth but promote conidiation. Here, we investigated the antifungal susceptibilities and biological characteristics of the passaged conidia. Twelve Fusarium solani strains (11 ocular-derived strains and 1 standard laboratory strain) were inoculated under blue light (0.5 mW/cm2) and darkness conditions, respectively, to obtain the passaged conidia of blue light group (n = 12) and darkness group (n = 12). Two groups were tested to determine the growth abilities and in vitro antifungal susceptibilities to five antifungal drugs (voriconazole (VRC), amphotericin B (AMB), terbinafine (TRB), caspofungin (CAS), and 5-flucytosine (5FC)), which were examined by microscopy for morphological observation and spectrophotometry for turbidity analysis. The results showed that blue light group passaged conidia were more sensitive to antifungal drugs (AMB, VRC, TRB, and CAS) compared to darkness group. The MIC50 of VRC significantly decreased after blue light treatment (P < 0.05). The fungal inhibition rate significantly increased for VRC, AMB, and TRB in the low concentration range (P < 0.05 or P < 0.01). Blue light did not affect germination or hyphal extension of passaged conidia. These results suggested that blue light could facilitate fungal inhibition effect of AMB, VRC, TRB, and CAS and may improve the therapeutic efficiency in VRC and AMB clinical applications. Blue light phototherapy may provide a new adjuvant approach for the treatment of ocular mycosis.


Subject(s)
Antifungal Agents , Fusarium , Antifungal Agents/pharmacology , Microbial Sensitivity Tests , Spores, Fungal
13.
Mycopathologia ; 187(4): 345-354, 2022 Aug.
Article in English | MEDLINE | ID: mdl-35612712

ABSTRACT

Fusarium species are globally distributed filamentous ascomycete fungi that are frequently reported as plant pathogens and opportunistic human pathogens, leading to yield loss of crops, mycotoxin contamination of food and feed products as well as damage to human and livestock. Human infections of Fusarium spp. are difficult to treat due to broad antifungal resistance by members of this genus. Their role as disease-causing agents in crops and humans suggests a need for antifungal resistance profiles as well as a simple, rapid, and cost effective identification method. Fusarium strains were isolated from food and clinical samples. High-resolution melting curve (HRM) analysis was performed using specific primers targeting internal transcribed spacer (ITS) region, followed with evaluation of specificity and sensitivity. The antifungal susceptibility of four Fusarium species was studied using the Sensititre YeastOne method. HRM analysis revealed reproducible, unimodal melting profiles specific to each of the four Fusarium strains, while no amplification of the negative controls. The minimum detection limits were 100-120 copies based on a 2 µl volume of template. Clear susceptibility differences were observed against antifungal agents by different Fusarium isolates, with amphotericin B and voriconazole displayed strongest antifungal effects to all the tested strains. We developed a simple, rapid, and low-cost qPCR-HRM method for identification of four Fusarium spp. (F. oxysporum, F. lateritium, F. fujikuroi, and F. solani). The antifungal susceptibility profiles supplied antifungal information of foodborne and clinical Fusarium spp. and provided guidance for clinical treatment of human infections.


Subject(s)
Fusariosis , Fusarium , Antifungal Agents/pharmacology , Fungi , Fusariosis/drug therapy , Fusariosis/microbiology , Humans , Microbial Sensitivity Tests , Real-Time Polymerase Chain Reaction
14.
Mol Plant Microbe Interact ; 34(12): 1455-1457, 2021 Dec.
Article in English | MEDLINE | ID: mdl-34388352

ABSTRACT

Fusarium musae causes crown rot of banana and it is also associated to clinical fusariosis. A chromosome-level genome assembly of F. musae F31 obtained combining Nanopore long reads and Illumina paired-end reads resulted in 12 chromosomes plus one contig with overall N50 of 4.36 Mb, and is presented together with its mitochondrial genome (58,072 bp). The F31 genome includes telomeric regions for 11 of the 12 chromosomes representing one of the most complete genomes available in the Fusarium fujikuroi species complex. The high-quality assembly of the F31 genome will be a valuable resource for studying the pathogenic interactions occurring between F. musae and banana. Moreover, it represents an important resource for understanding the genome evolution in the F. fujikuroi species complex.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.


Subject(s)
Fusarium , Musa , Fusarium/genetics , Plant Diseases , Telomere
15.
Emerg Infect Dis ; 27(1)2021 01.
Article in English | MEDLINE | ID: mdl-33352085

ABSTRACT

Invasive fusariosis (IF) is associated with severe neutropenia in patients with concurrent hematologic conditions. We conducted a retrospective observational study to characterize the epidemiology of IF in 18 Spanish hospitals during 2000-2015. In that time, the frequency of IF in nonneutropenic patients increased from 0.08 cases per 100,000 admissions in 2000-2009 to 0.22 cases per 100,000 admissions in 2010-2015. Nonneutropenic IF patients often had nonhematologic conditions, such as chronic cardiac or lung disease, rheumatoid arthritis, history of solid organ transplantation, or localized fusariosis. The 90-day death rate among nonneutropenic patients (28.6%) and patients with resolved neutropenia (38.1%) was similar. However, the death rate among patients with persistent neutropenia (91.3%) was significantly higher. We used a multivariate Cox regression analysis to characterize risk factors for death: persistent neutropenia was the only risk factor for death, regardless of antifungal therapy.


Subject(s)
Fusariosis , Fusarium , Neutropenia , Antifungal Agents/therapeutic use , Fusariosis/drug therapy , Fusariosis/epidemiology , Humans , Neutropenia/drug therapy , Neutropenia/epidemiology , Observational Studies as Topic , Spain/epidemiology
16.
Intern Med J ; 51 Suppl 7: 177-219, 2021 Nov.
Article in English | MEDLINE | ID: mdl-34937139

ABSTRACT

Invasive fungal disease (IFD) due to moulds other than Aspergillus is a significant cause of mortality in patients with malignancies or post haemopoietic stem cell transplantation. The current guidelines focus on the diagnosis and management of the common non-Aspergillus moulds (NAM), such as Mucorales, Scedosporium species (spp.), Lomentospora prolificans and Fusarium spp. Rare but emerging NAM including Paecilomyces variotii, Purpureocillium lilacinum and Scopulariopsis spp. are also reviewed. Culture and histological examination of tissue biopsy specimens remain the mainstay of diagnosis, but molecular methods are increasingly being used. As NAM frequently disseminate, blood cultures and skin examination with biopsy of any suspicious lesions are critically important. Treatment requires a multidisciplinary approach with surgical debridement as a central component. Other management strategies include control of the underlying disease/predisposing factors, augmentation of the host response and the reduction of immunosuppression. Carefully selected antifungal therapy, guided by susceptibility testing, is critical to cure. We also outline novel antifungal agents still in clinical trial which offer substantial potential for improved outcomes in the future. Paediatric recommendations follow those of adults. Ongoing epidemiological research, improvement in diagnostics and the development of new antifungal agents will continue to improve the poor outcomes that have been traditionally associated with IFD due to NAM.


Subject(s)
Hematology , Invasive Fungal Infections , Adult , Antifungal Agents/therapeutic use , Aspergillus , Child , Fungi , Humans , Invasive Fungal Infections/drug therapy , Invasive Fungal Infections/therapy
17.
Mycoses ; 64(12): 1542-1545, 2021 Dec.
Article in English | MEDLINE | ID: mdl-34013538

ABSTRACT

BACKGROUND: Invasive fusariosis is a serious infection affecting mostly patients with haematologic malignancies and hematopoietic cell transplant recipients. OBJECTIVES: To develop a scoring tool that evaluates guideline adherence in the management of invasive fusariosis. METHODS: We reviewed two guidelines, provided by the European Society for Clinical Microbiology and Infectious Diseases (ESCMID) and the European Confederation of Medical Mycology (ECMM), and selected the strongest recommendations for management quality as the bases for the scoring tool. RESULTS: We reviewed the recommendations regarding primary and secondary prophylaxis, diagnostics procedures (images, blood cultures, biopsy of skin lesions with direct examination, culture and histopathology, species identification, antifungal susceptibility tests and antigen detection), treatment choices and follow-up procedures. The tool comprises 18 items, with a maximum of 24 points. CONCLUSIONS: The EQUAL score Fusariosis is a tool that may help clinicians to measure guidelines adherence.


Subject(s)
Fusariosis , Hematopoietic Stem Cell Transplantation , Practice Guidelines as Topic , Antifungal Agents/therapeutic use , Blood Culture , Fusariosis/diagnosis , Fusariosis/drug therapy , Fusarium , Guideline Adherence , Humans , Mycology
18.
Mycoses ; 64(10): 1261-1271, 2021 Oct.
Article in English | MEDLINE | ID: mdl-34173979

ABSTRACT

BACKGROUND: Fusarium species are emerging causative agents of superficial and disseminated human infections. Early diagnosis and treatment contribute to better prognosis of severe infection. OBJECTIVES: To detect the effectiveness of matrix-assisted laser desorption ionisation time of flight mass spectrometry (MALDI-ToF MS) for Fusarium identification, and evaluate the susceptibility profiles to clinical available antifungals. METHODS: All 203 clinical Fusarium isolates and 25 environmental isolates were identified by using translation elongation factor 1-alpha (TEF1) and RNA polymerase subunit II (RPB2) sequencing and MALDI-ToF MS. Antifungal susceptibility testing was determined by a microdilution method following the CLSI approved standard M38-A3 document. RESULTS: Correct identification rates at the species and genus levels were 89.04% (203/228) and 95.18% (217/228), respectively, using Bruker Filamentous Fungi Library 1.0 combined with the novel database. Seven species complexes with 19 Fusarium species were identified, including F. solani (59.21%, n = 135), F. verticillioides (17.54%, n = 40), F. proliferatum (6.58%, n = 15) and F. oxysporum (4.39%, n = 10). Four uncommon species complexes (F. incarnatum-equiseti SC, F. dimerum SC, F. redolens SC and F. sporotrichioides SC) were also identified. A high degree of antifungal resistance was observed. Fusarium isolates exhibited lower MICs to luliconazole and terbinafine compared with amphotericin B and voriconazole, which in turn were significantly more active than amorolfine, fluconazole and itraconazole. CONCLUSIONS: MALDI-ToF MS showed good performance in Fusarium species with an adapted Bruker library and expanded database. Fusarium isolates exhibited lower MICs to luliconazole and terbinafine compared to amphotericin B and voriconazole.


Subject(s)
Antifungal Agents , Fusarium , Microbial Sensitivity Tests , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization , Amphotericin B , Antifungal Agents/pharmacology , China , Fusarium/drug effects , Fusarium/isolation & purification , Humans , Imidazoles , Terbinafine , Voriconazole
19.
J Invertebr Pathol ; 182: 107586, 2021 06.
Article in English | MEDLINE | ID: mdl-33812924

ABSTRACT

The aim of this study was to identify and characterize, at the molecular and transcriptional levels, sequences encoding the different members of the four families of shrimp antimicrobial peptides (AMPs) in species of the genus Farfantepenaeus. The identification of the AMP sequences was performed by in silico analysis as well as by molecular cloning and nucleotide sequencing. We identified all seven shrimp ALFs (ALF-A to ALF-G), both Type IIa and Type IIb crustins as well as two stylicins (STY1 and STY2) in Farfantepenaeus. Only two genes (PEN1/2 and PEN4) of the four-member penaeidin family (PEN1/2 to PEN5) were found and this is the first report of stylicins as well as of several additional members of ALFs, crustins and penaeidins in species of the genus Farfantepenaeus. All AMP genes have shown to be constitutively transcribed in the shrimp immune cells (hemocytes), except for ALF-G. Finally, the transcriptional profile of the different AMPs was assessed in the hemocytes of F. paulensis (pink shrimp) following an experimental infection with the opportunistic filamentous fungus Fusarium solani. We found that while the expression of ALF-B was induced at 24 h, the STY2 gene was down-regulated at 48 h post-challenge. These results provide evidence of the molecular diversity of AMPs from shrimp of the genus Farfantepenaeus in terms of sequences, biochemical properties and expression profiles in response to infectious diseases.


Subject(s)
Fusarium/physiology , Gene Expression , Host-Pathogen Interactions , Penaeidae/genetics , Pore Forming Cytotoxic Proteins/genetics , Animals , Penaeidae/microbiology , Pore Forming Cytotoxic Proteins/metabolism
20.
Transpl Infect Dis ; 22(6): e13344, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32479709

ABSTRACT

Neocosmospora pseudensiformis (formerly Fusarium pseudensiforme) is a hyaline mold in the Fusarium solani species complex that has been changed to the genus Neocosmospora. Invasive fusariosis is a rare fungal infection in solid organ transplantation. The most commonly reported manifestation of invasive fusariosis in this setting is localized cutaneous fusariosis. Here, we present the first case report of isolated N pseudensiformis pulmonary infection in a patient with non-alcoholic steatohepatitis cirrhosis who underwent orthotopic liver transplantation. A 67-year-old Thai woman developed acute graft rejection, dyspnea, and pulmonary consolidation 6 months after liver transplantation. N pseudensiformis was isolated from her sputum, and her clinical symptoms were improved with voriconazole treatment. However, she succumbed to Acinetobacter baumannii hospital-acquired pneumonia and acute coronary syndrome with cardiogenic shock after 10 days of treatment.


Subject(s)
Fusariosis/microbiology , Fusarium/isolation & purification , Liver Transplantation/adverse effects , Lung Diseases, Fungal/microbiology , Non-alcoholic Fatty Liver Disease/surgery , Aged , Antifungal Agents/therapeutic use , Fatal Outcome , Female , Fusariosis/diagnosis , Fusariosis/drug therapy , Fusarium/pathogenicity , Humans , Lung Diseases, Fungal/diagnosis , Lung Diseases, Fungal/drug therapy , Radiography/methods , Sputum/microbiology , Treatment Outcome , Voriconazole/therapeutic use
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