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Robert A Samson - One of the best experts on this subject based on the ideXlab platform.
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On the relationships of Paecilomyces sect. Isarioidea species.
Mycological Research, 2005Co-Authors: J. Jennifer Luangsa-ard, Nigel L Hywel-jones, Leka Manoch, Robert A SamsonAbstract:Phylogenetic relationships of Paecilomyces sect. Isarioidea species were analysed using the β-tubulin gene and ITS rDNA. Maximum parsimony analyses showed that the section does not form a natural taxonomic group and is polyphyletic within the Hypocreales. However, a group was recognized, designated as the Isaria clade, to be monophyletic comprising of the following Paecilomyces species: P. amoeneroseus, P. cateniannulatus, P. cateniobliquus, P. cicadae, P. coleopterorus, P. farinosus, P. fumosoroseus, P. ghanensis, P. javanicus and P. tenuipes. Some of these species have teleomorphs in Cordyceps.
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On the relationships of Paecilomyces sect. Isarioidea species.
Mycological research, 2005Co-Authors: J. Jennifer Luangsa-ard, Nigel L Hywel-jones, Leka Manoch, Robert A SamsonAbstract:Phylogenetic relationships of Paecilomyces sect. Isarioidea species were analysed using the beta-tubulin gene and ITS rDNA. Maximum parsimony analyses showed that the section does not form a natural taxonomic group and is polyphyletic within the Hypocreales. However, a group was recognized, designated as the Isaria clade, to be monophyletic comprising of the following Paecilomyces species: P. amoeneroseus, P. cateniannulatus, P. cateniobliquus, P. cicadae, P. coleopterorus, P. farinosus, P. fumosoroseus, P. ghanensis, P. javanicus and P. tenuipes. Some of these species have teleomorphs in Cordyceps.
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The polyphyletic nature of Paecilomyces sensu lato based on 18S-generated rDNA phylogeny
Mycologia, 2004Co-Authors: J Jennifer Luangsa-ard, Nigel L Hywel-jones, Robert A SamsonAbstract:Nuclear-encoded small-subunit ribosomal DNA was used to examine phylogenetic relationships in Paecilomyces sensu lato. Phylogenetic analysis of the 18S nr DNA demonstrates that Paecilomyces is polyphyletic across two subclasses, Sordariomycetidae and Eurotiomycetidae. The type species, Paecilomyces variotii, and thermophilic relatives belong in the order Eurotiales (Trichocomaceae), while mesophilic species related to Paecilomyces farinosus are in the order Hypocreales (Clavicipitaceae and Hypocreaceae). One species, Paecilomyces inflatus, had affinities for the order Sordariales. Within the Eurotiales, Paecilomyces is monophyletic. Within the Hypocreales, species of Paecilomyces are polyphyletic, although the data failed to fully resolve these relationships.
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Thermotolerant and thermoresistant Paecilomyces and its teleomorphic states isolated from Thai forest and mountain soils
2004Co-Authors: Janet Jennifer Luangsa-ard, Leka Manoch, Suparp Artjariyasripong, Robert A SamsonAbstract:A Dilution plate method combined with heat treatment at 60∞C and 80∞C was used to isolate thermotolerant and thermoresistant Paecilomyces species in soil. The predominant species of Paecilomyces that had been identified was Paecilomyces variotii, the type species of the genus . Oatmeal Agar was used to induce the teleomorph at 37∞C. Other species isolated belong to Paecilomyces or its teleomorphic states Byssochlamys, Talaromyces and Thermoascus included Byssochlamys nivea, Byssochlamys fulva, Talaromyces byssochlamydoides and Thermoascus crustaceus.
Raquel Domingos - One of the best experts on this subject based on the ideXlab platform.
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A Case of Pulmonary Mycetoma Caused by Paecilomyces variotii.
European journal of case reports in internal medicine, 2019Co-Authors: Diogo Paixão Marques, Joana Carvalho, Sara Rocha, Raquel DomingosAbstract:Fungal infections caused by Paecilomyces species are rare. Although most cases of human infection occur in immunocompromised patients, this species is also being increasingly recognized as a pathogen in immunocompetent individuals. Paecilomyces variotii and P. lilacinus are the most common pathogens in humans. P. variotii infection usually manifests as peritonitis, pneumonia or endophthalmitis. We present the case of an 84-year-old immunocompromised patient with interstitial lung disease, who developed pulmonary mycetoma with isolation of P. variotii in bronchoalveolar lavage fluid culture. We found one similar case in the literature, but Paecilomyces species was not identified. Therefore, this is the first described case of pulmonary mycetoma caused by P. variotii. LEARNING POINTS Paecilomyces are rare causes of fungal infection in humans and occur more frequently in immunocompromised patients. Paecilomyces variotii is one of the most common pathogens of this species and is associated with peritonitis, pneumonia, osteomyelitis, endophthalmitis and fungaemia. To the date, pulmonary mycetoma caused by P. variotii has been described in only one patient in the literature. Keywords: Paecilomyces variotii, mycetoma, immunosuppression, interstitial lung disease INTRODUCTION Paecilomyces is a ubiquitous worldwide fungus that lives in the soil, decaying plants, wood and some food products[1]. These filamentous fungi are able to grow under stressful conditions such as hot or dry environments, which may contribute to their potential pathogenic nature[2]. Fungal infections caused by Paecilomyces species are uncommon[3]. Most cases of human infection occur in immunocompromised individuals, as well as following trauma or surgical procedures such as intraocular lens implantation[3]. However, Paecilomyces infection in immunocompetent patients have been increasingly reported in the literature[3,4]. We present the case of an immunocompromised 84-year-old man with interstitial lung disease who developed pulmonary mycetoma caused by Paecilomyces variotii.
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A Case of Pulmonary Mycetoma Caused by Paecilomyces variotii
SMC MEDIA SRL, 2019Co-Authors: Diogo Paixão Marques, Joana Carvalho, Sara Rocha, Raquel DomingosAbstract:Fungal infections caused by Paecilomyces species are rare. Although most cases of human infection occur in immunocompromised patients, this species is also being increasingly recognized as a pathogen in immunocompetent individuals. Paecilomyces variotii and P. lilacinus are the most common pathogens in humans. P. variotii infection usually manifests as peritonitis, pneumonia or endophthalmitis. We present the case of an 84-year-old immunocompromised patient with interstitial lung disease, who developed pulmonary mycetoma with isolation of P. variotii in bronchoalveolar lavage fluid culture. We found one similar case in the literature, but Paecilomyces species was not identified. Therefore, this is the first described case of pulmonary mycetoma caused by P. variotii
Diogo Paixão Marques - One of the best experts on this subject based on the ideXlab platform.
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A Case of Pulmonary Mycetoma Caused by Paecilomyces variotii.
European journal of case reports in internal medicine, 2019Co-Authors: Diogo Paixão Marques, Joana Carvalho, Sara Rocha, Raquel DomingosAbstract:Fungal infections caused by Paecilomyces species are rare. Although most cases of human infection occur in immunocompromised patients, this species is also being increasingly recognized as a pathogen in immunocompetent individuals. Paecilomyces variotii and P. lilacinus are the most common pathogens in humans. P. variotii infection usually manifests as peritonitis, pneumonia or endophthalmitis. We present the case of an 84-year-old immunocompromised patient with interstitial lung disease, who developed pulmonary mycetoma with isolation of P. variotii in bronchoalveolar lavage fluid culture. We found one similar case in the literature, but Paecilomyces species was not identified. Therefore, this is the first described case of pulmonary mycetoma caused by P. variotii. LEARNING POINTS Paecilomyces are rare causes of fungal infection in humans and occur more frequently in immunocompromised patients. Paecilomyces variotii is one of the most common pathogens of this species and is associated with peritonitis, pneumonia, osteomyelitis, endophthalmitis and fungaemia. To the date, pulmonary mycetoma caused by P. variotii has been described in only one patient in the literature. Keywords: Paecilomyces variotii, mycetoma, immunosuppression, interstitial lung disease INTRODUCTION Paecilomyces is a ubiquitous worldwide fungus that lives in the soil, decaying plants, wood and some food products[1]. These filamentous fungi are able to grow under stressful conditions such as hot or dry environments, which may contribute to their potential pathogenic nature[2]. Fungal infections caused by Paecilomyces species are uncommon[3]. Most cases of human infection occur in immunocompromised individuals, as well as following trauma or surgical procedures such as intraocular lens implantation[3]. However, Paecilomyces infection in immunocompetent patients have been increasingly reported in the literature[3,4]. We present the case of an immunocompromised 84-year-old man with interstitial lung disease who developed pulmonary mycetoma caused by Paecilomyces variotii.
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A Case of Pulmonary Mycetoma Caused by Paecilomyces variotii
SMC MEDIA SRL, 2019Co-Authors: Diogo Paixão Marques, Joana Carvalho, Sara Rocha, Raquel DomingosAbstract:Fungal infections caused by Paecilomyces species are rare. Although most cases of human infection occur in immunocompromised patients, this species is also being increasingly recognized as a pathogen in immunocompetent individuals. Paecilomyces variotii and P. lilacinus are the most common pathogens in humans. P. variotii infection usually manifests as peritonitis, pneumonia or endophthalmitis. We present the case of an 84-year-old immunocompromised patient with interstitial lung disease, who developed pulmonary mycetoma with isolation of P. variotii in bronchoalveolar lavage fluid culture. We found one similar case in the literature, but Paecilomyces species was not identified. Therefore, this is the first described case of pulmonary mycetoma caused by P. variotii
Nigel L Hywel-jones - One of the best experts on this subject based on the ideXlab platform.
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On the relationships of Paecilomyces sect. Isarioidea species.
Mycological research, 2005Co-Authors: J. Jennifer Luangsa-ard, Nigel L Hywel-jones, Leka Manoch, Robert A SamsonAbstract:Phylogenetic relationships of Paecilomyces sect. Isarioidea species were analysed using the beta-tubulin gene and ITS rDNA. Maximum parsimony analyses showed that the section does not form a natural taxonomic group and is polyphyletic within the Hypocreales. However, a group was recognized, designated as the Isaria clade, to be monophyletic comprising of the following Paecilomyces species: P. amoeneroseus, P. cateniannulatus, P. cateniobliquus, P. cicadae, P. coleopterorus, P. farinosus, P. fumosoroseus, P. ghanensis, P. javanicus and P. tenuipes. Some of these species have teleomorphs in Cordyceps.
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On the relationships of Paecilomyces sect. Isarioidea species.
Mycological Research, 2005Co-Authors: J. Jennifer Luangsa-ard, Nigel L Hywel-jones, Leka Manoch, Robert A SamsonAbstract:Phylogenetic relationships of Paecilomyces sect. Isarioidea species were analysed using the β-tubulin gene and ITS rDNA. Maximum parsimony analyses showed that the section does not form a natural taxonomic group and is polyphyletic within the Hypocreales. However, a group was recognized, designated as the Isaria clade, to be monophyletic comprising of the following Paecilomyces species: P. amoeneroseus, P. cateniannulatus, P. cateniobliquus, P. cicadae, P. coleopterorus, P. farinosus, P. fumosoroseus, P. ghanensis, P. javanicus and P. tenuipes. Some of these species have teleomorphs in Cordyceps.
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The polyphyletic nature of Paecilomyces sensu lato based on 18S-generated rDNA phylogeny
Mycologia, 2004Co-Authors: J Jennifer Luangsa-ard, Nigel L Hywel-jones, Robert A SamsonAbstract:Nuclear-encoded small-subunit ribosomal DNA was used to examine phylogenetic relationships in Paecilomyces sensu lato. Phylogenetic analysis of the 18S nr DNA demonstrates that Paecilomyces is polyphyletic across two subclasses, Sordariomycetidae and Eurotiomycetidae. The type species, Paecilomyces variotii, and thermophilic relatives belong in the order Eurotiales (Trichocomaceae), while mesophilic species related to Paecilomyces farinosus are in the order Hypocreales (Clavicipitaceae and Hypocreaceae). One species, Paecilomyces inflatus, had affinities for the order Sordariales. Within the Eurotiales, Paecilomyces is monophyletic. Within the Hypocreales, species of Paecilomyces are polyphyletic, although the data failed to fully resolve these relationships.
Manuel Cuenca-estrella - One of the best experts on this subject based on the ideXlab platform.
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Susceptibility Testing and Molecular Classification of Paecilomyces spp.
Antimicrobial agents and chemotherapy, 2008Co-Authors: Maria Victoria Castelli, Ana Alastruey-izquierdo, Isabel Cuesta, Araceli Monzón, Emilia Mellado, Juan L. Rodriguez-tudela, Manuel Cuenca-estrellaAbstract:In vitro susceptibility profiles of 58 Paecilomyces clinical isolates are reported. Amphotericin B, itraconazole, and echinocandins showed poor activity against Paecilomyces lilacinus, while the new triazoles were active against it. Paecilomyces variotii exhibited a different susceptibility pattern, being susceptible to most antifungal agents apart from voriconazole and ravuconazole.
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Pulmonary mycetoma caused by an atypical isolate of Paecilomyces species in an immunocompetent individual: case report and literature review of Paecilomyces lung infections.
European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2005Co-Authors: Félix Gutiérrez, Emilia Mellado, Mar Masiá, José Ramos, Matilde Elía, Manuel Cuenca-estrellaAbstract:The first case of pulmonary fungus ball caused by Paecilomyces species is reported. The diagnosis was established by isolation of the fungus in culture from specimens obtained by percutaneous transthoracic needle aspiration in an immunocompetent individual. The isolate was atypical, as it failed to produce fruiting structures on routine mycological media. Identification was achieved by sequencing polymorphisms of the internal transcriber spacer regions of the ribosomal DNA. The antifungal susceptibility profile was also determined. This report underscores the increasing importance of Paecilomyces species in human infections. Paecilomyces should be included among the etiological agents of pulmonary mycetoma.
