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Lazarus JE, Branda JA, Gandhi RG, Barshak MB, Zachary KC, Barczak AK. Disseminated Intravascular Infection Caused by Paecilomyces variotii: Case Report and Review of the Literature. Open Forum Infect Dis 2020; 7:ofaa166. [PMID: 32617367 PMCID: PMC7314584 DOI: 10.1093/ofid/ofaa166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 05/07/2020] [Indexed: 11/14/2022] Open
Abstract
Paecilomyces variotii is a ubiquitous environmental saprophyte with worldwide distribution. Commonly found in soil and decomposing organic material [1, 2], P. variotii can also be isolated from drinking water [3] and indoor and outdoor air [4-6]. In immunocompetent hosts, P. variotii has been reported as a cause of locally invasive disease including prosthetic valve endocarditis [7, 8], endophthalmitis [9, 10], rhinosinusitis [11, 12], and dialysis-associated peritonitis [13, 14]. In contrast, disseminated infections are more commonly reported in immunocompromised patients, including those with chronic granulomatous disease [15], solid malignancy [16], acute leukemia [17], lymphoma [18], multiple myeloma [19], and after stem cell transplant for myelodysplasia [20]. In 1 case series examining invasive infections by non-Aspergillus molds, P. variotii was the most common cause after Fusarium spp. [21]. Here, we present the case of an immunocompetent patient with extensive intravascular infection involving prosthetic material. We describe successful induction therapy with combination antifungals and extended suppression with posaconazole with clinical quiescence and eventual normalization of serum fungal biomarkers.
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Affiliation(s)
- Jacob E Lazarus
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - John A Branda
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Ronak G Gandhi
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Miriam B Barshak
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Kimon C Zachary
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Amy K Barczak
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- The Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
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β-(1→6)-D-glucan secreted during the optimised production of exopolysaccharides by Paecilomyces variotii has immunostimulatory activity. Antonie van Leeuwenhoek 2017; 111:981-994. [PMID: 29236232 DOI: 10.1007/s10482-017-1000-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 12/05/2017] [Indexed: 10/18/2022]
Abstract
Paecilomyces variotii is a filamentous fungus that occurs worldwide in soil and decaying vegetation. Optimization of the fermentation process for exopolysaccharide (EPS) production from the fungus P. variotii, structure determination and immuno-stimulating activity of EPS were performed. Response surface methodology (RSM) coupled with central composite design (CCD) was used to optimize the physical and chemical factors required to produce EPS in submerged fermentation. Preliminary investigations to choose the three factors for the present work were made using a factorial experimental design. Glucose, ammonium nitrate (NH4NO3) and pH were used as variables for which, with constant temperature of 28 °C and agitation of 90 rpm, the optimal process parameters were determined as glucose values of 0.96%, NH4NO3 0.26% and pH 8.0. The three parameters presented significant effects. In this condition of culture, the main composition of the isolated EPS was a linear β-(1 → 6)-linked-D-glucan, as determined by Nuclear Magnetic Resonance (NMR) and methylation analysis. This polysaccharide is a very unusual as an EPS from fungi, especially a filamentous fungus such as P. variotii. Murine peritoneal macrophages cultivated with β-glucan for 6 and 48 h showed an increase in TNF-α, IL-6 and nitric oxide release with increased polysaccharide concentrations. Therefore, we conclude that the β-(1 → 6)-linked-D-glucan produced in optimised conditions of P. variotii cultivation has an immune-stimulatory activity on murine macrophages.
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Feldman R, Cockerham L, Buchan BW, Lu Z, Huang AM. Treatment of Paecilomyces variotii pneumonia with posaconazole: case report and literature review. Mycoses 2016; 59:746-750. [PMID: 27401982 DOI: 10.1111/myc.12525] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 05/02/2016] [Accepted: 05/21/2016] [Indexed: 11/28/2022]
Abstract
The fungi Paecilomyces variotii is a potential pathogen in immunocompromised and immunocompetent patients. Their rare association with clinical disease results in scarce literature regarding susceptibility and treatment. Here, we discuss a case involving successful treatment of probable P. variotii pneumonia with posaconazole after treatment failure with voriconazole. The current literature related to antifungal susceptibility profiles, microbiological identification methods and clinical management of infections caused by this organism is also reviewed.
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Affiliation(s)
- Ryan Feldman
- Department of Pharmacy, Froedtert & The Medical College of Wisconsin, Milwaukee, WI, USA
| | - Leslie Cockerham
- Division of Infectious Diseases, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Blake W Buchan
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Zouyan Lu
- Division of Infectious Diseases, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Angela M Huang
- Department of Pharmacy, Froedtert & The Medical College of Wisconsin, Milwaukee, WI, USA
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Schinabeck MK, Ghannoum MA. Human Hyalohyphomycoses: A Review of Human Infections Due toAcremoniumspp.,Paecilomycesspp.,Penicilliumspp., andScopulariopsisspp. J Chemother 2013; 15 Suppl 2:5-15. [PMID: 14708962 DOI: 10.1179/joc.2003.15.supplement-2.5] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Human infections due to opportunistic molds are on the rise. This is due to recent advances in medical technology that have led to increased numbers of patients who are immunosuppressed, receiving broad-spectrum antibiotics, or have indwelling medical devices. In this article, human infections caused by four hyalohyphomycoses, Acremonium spp., Paecilomyces spp., Penicillium spp., and Scopulariopsis spp., will be reviewed. Specific areas of focus will include the epidemiology, mycology, clinical presentations, and treatment options for each of these four hyaline molds.
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Affiliation(s)
- M K Schinabeck
- Division of Infectious Diseases, Department of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
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Vasudevan B, Hazra N, Verma R, Srinivas V, Vijendran P, Badad A. First reported case of subcutaneous hyalohyphomycosis caused byPaecilomyces variotii. Int J Dermatol 2013; 52:711-3. [DOI: 10.1111/j.1365-4632.2012.05761.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Biju Vasudevan
- Department of Dermatology; Command Hospital and Armed Forces Medical College; Pune; India
| | - Nandita Hazra
- Department of Microbiology; Command Hospital and Armed Forces Medical College; Pune; India
| | - Rajesh Verma
- Department of Dermatology; Command Hospital and Armed Forces Medical College; Pune; India
| | - Vadlamannati Srinivas
- Department of Pathology; Command Hospital and Armed Forces Medical College; Pune; India
| | - Pragasam Vijendran
- Department of Dermatology; Command Hospital and Armed Forces Medical College; Pune; India
| | - Ambresh Badad
- Department of Dermatology; Command Hospital and Armed Forces Medical College; Pune; India
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Identification of Paecilomyces variotii in clinical samples and settings. J Clin Microbiol 2010; 48:2754-61. [PMID: 20519470 DOI: 10.1128/jcm.00764-10] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Paecilomyces variotii is a commonly occurring species in air and food, but it is also associated with many types of human infections and is among the emerging causative agents of opportunistic mycoses in immunocompromised hosts. Paecilomyces can cause hyalohyphomycosis, and two species, Paecilomyces lilacinus and P. variotii, are the most frequently encountered organisms. In the present study, a set of 34 clinical isolates morphologically identified as P. variotii or P. lilacinus were formally identified by sequencing intergenic transcribed spacer regions 1 and 2 (including 5.8S rDNA) and a part of the beta-tubulin gene. Three isolates were identified as P. lilacinus, and five of the presumptive P. variotii isolates did not belong to the genus Paecilomyces but were identified as Talaromyces eburneus (anamorph, Geosmithia argillacea) or Hamigera avellanea (anamorph, Merimbla ingelheimense). Applying the most recent taxonomy, we found that the clinical P. variotii isolates could be identified as P. variotii sensu stricto (14 strains), P. formosus (11 strains), and P. dactylethromorphus (1 strain). These data indicate that P. formosus occurs in clinical samples as commonly as P. variotii. Susceptibility tests showed that the antifungal susceptibility profiles of P. variotii, P. formosus, and P. dactylethromorphus are similar and that all strains tested were susceptible to amphotericin B in vitro. P. lilanicus, T. eburneus, and H. avellanea had different susceptibility profiles; and flucytosine and voriconazole were the least active of the antifungal drugs tested against these species. Our results indicate that correct species identification is important to help guide appropriate antifungal therapy.
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Kantarcioğlu AS, Hatemi G, Yücel A, De Hoog GS, Mandel NM. Paecilomyces variotii central nervous system infection in a patient with cancer. Mycoses 2003; 46:45-50. [PMID: 12588483 DOI: 10.1046/j.1439-0507.2003.00837.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Paecilomyces variotii was isolated from two subsequent cerebrospinal fluid (CSF) specimens of a cancer patient. Identification was confirmed through beta-tubulin and rDNA ITS sequencing. MICs were determined for seven antifungal agents; the isolate was found to be susceptible to amphotericin B (AMB), itraconazole (ITZ), ketaconazole (KTZ) and 5-fluorocytosine (5FC) but resistant to fluconazole (FLZ) and miconazole (MCZ). Despite antimycotic therapy, the infection proved to be fatal.
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Affiliation(s)
- A S Kantarcioğlu
- Department of Microbiology and Clinical Microbiology, Istanbul University, Istanbul, Turkey.
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Rainer J, Peintner U, Pöder R. Biodiversity and concentration of airborne fungi in a hospital environment. Mycopathologia 2001; 149:87-97. [PMID: 11265167 DOI: 10.1023/a:1007273131130] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The biodiversity and concentration of airborne fungi were monitored over a period of 6 months in a special-care unit of a hospital. Air sampling was performed in a corridor that was also accessible to visitors and in an adjacent bone-marrow transplantation (BMT) unit using an air sampler and two isolation media. Altogether, 98 fungal species could be identified, among them Aspergillus fumigatus and A. terreus as well as 48 other species reported as potential pathogens. The average contamination values of the corridor air ranged from 124 to 485 cfu m-3. Neither the degree of fungal air contamination nor the species composition inside the special care unit differed from those found in the corridor. By means of data obtained with a light-activated sensor, a possible influence of human activities on diurnal changes of fungal propagule concentration was shown.
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Affiliation(s)
- J Rainer
- Institute of Microbiology (N.F.), Leopold-Franzens-University Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria.
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