Geotrichum és un gènere cosmopolita de fongs que es troben al sòl, l'aigua, l'aire i en els residus i també en les plantes, els cereals i els productes lactis; també es troba en la flora humana normal i aïllat de les escopinades i les femtes. Va ser descrit el 1809 per Johann Heinrich Friedrich Link.[1]
El gènere Geotrichum inclou diverses espècies: la més comunes són Geotrichum candidum, Geotrichum clavatum i Geotrichum fici aquesta darrera espècie fa una olor intensa similar a la pinya americana o ananàs.
S'han identificat soques semblants a llevats i a floridures.[2]
Geotrichum és un gènere cosmopolita de fongs que es troben al sòl, l'aigua, l'aire i en els residus i també en les plantes, els cereals i els productes lactis; també es troba en la flora humana normal i aïllat de les escopinades i les femtes. Va ser descrit el 1809 per Johann Heinrich Friedrich Link.
El gènere Geotrichum inclou diverses espècies: la més comunes són Geotrichum candidum, Geotrichum clavatum i Geotrichum fici aquesta darrera espècie fa una olor intensa similar a la pinya americana o ananàs.
S'han identificat soques semblants a llevats i a floridures.
Το Γεώτριχο (Geotrichum) είναι γένος μυκήτων. Έχει παγκόσμια εξάπλωση και απαντάται στο έδαφος, το νερό, τον αέρα, τις αποχετεύσεις καθώς και στα φυτά (δημητριακά) και στα γαλακτοκομικά. Ανευρίσκεται, επίσης, ως τμήμα της πανίδας του ανθρώπινου οργανισμού (απομονώνεται από τα πτύελα και τα περιττώματα). Περιγράφηκε για πρώτη φορά το 1809 από τον Johann Friedrich Heinrich Link.[1]
Το γένος περιλαμβάνει αρκετά είδη, κοινότερα των οποίων είναι τα:
Έχει επίσης διαπιστωθεί ότι καταβροχθίζει τις επιφάνειες επίστρωσης των CD/DVD, σε συνθήκες υψηλών θερμοκρασιών.
Χρήστος Λαλάς, Το Μικρό Λεξικό του Internet, Αθήνα:Δίαυλος, 2002, ISBN 960-531-138-0.
Το Γεώτριχο (Geotrichum) είναι γένος μυκήτων. Έχει παγκόσμια εξάπλωση και απαντάται στο έδαφος, το νερό, τον αέρα, τις αποχετεύσεις καθώς και στα φυτά (δημητριακά) και στα γαλακτοκομικά. Ανευρίσκεται, επίσης, ως τμήμα της πανίδας του ανθρώπινου οργανισμού (απομονώνεται από τα πτύελα και τα περιττώματα). Περιγράφηκε για πρώτη φορά το 1809 από τον Johann Friedrich Heinrich Link.
Το γένος περιλαμβάνει αρκετά είδη, κοινότερα των οποίων είναι τα:
Geotrichum candidum Geotrichum clavatum Geotrichum ficiΈχει επίσης διαπιστωθεί ότι καταβροχθίζει τις επιφάνειες επίστρωσης των CD/DVD, σε συνθήκες υψηλών θερμοκρασιών.
Geotrichum is a genus of fungi found worldwide in soil, water, air, and sewage, as well as in plants, cereals, and dairy products; it is also commonly found in normal human flora and is isolated from sputum and feces. It was first described in 1809 by Johann Heinrich Friedrich Link.[1]
The genus Geotrichum includes over 100 species. Some are welcome and even considered desirable. For example, skilled cheesemakers create conditions favorable for the formation of a Geotrichum candidum rind on certain goat's milk and cow's milk cheeses, proudly declaring the rind to be the most flavorful part of such cheeses. Another example is the presence of some Geotrichum species in fermented poi.
The most clinically relevant species is Saprochaeta capitata, formerly known as Geotrichum capitatum, with most cases occurring in Europe.[2][3]
Saprochaete clavata, formerly known as Geotrichum clavatum, is an uncommon infection that has been associated with sporadic outbreaks.[4] Geotrichum candidum is closely related to Saprochaeta sp., rarely isolated but may cause invasive and disseminated disease with high mortality Yeast-like and mold-like strains have been identified.[5]
The most important risk factor for invasive fungal infection related to Geotrichum is severe immunosuppression, especially in hematological malignancies as acute leukemia, associated with profound and prolonged neutropenia.[2][6]
Fungemia is very common, often with deep organ involvement (lung, liver, spleen, and central nervous system) and also skin and mucous membranes lesions.[7] There is no optimal treatment for Geotrichum infections but based on existing data guidelines recommend amphotericin B with or without co-administered flucytosine or with voriconazole showing good in vitro susceptibility.
Mortality associated with Geotrichum-related infections is high, ranging from 57% to 80%.[8]
Increasing the knowledge on Geotrichum related invasive fungal infections may improve early diagnosis and adequate treatment of these severe infections.
The genus Geotrichum was described by Johann Heinrich Friedrich Link in 1809 to accommodate the species G. candidum found on decaying leaves. Since then, over 130 taxa have been described in the genus, and hundreds of synonyms have been generated.[9] For example G. candidum was misclassified as the Oidium lactis in much early literature.[10] Species of Geotrichum resemble the genera Trichosporon and Protendomycopsis; however, Geotrichum is of ascomycetous affiliation whereas the latter are members of the Basidiomycota. Species of Geotrichum are occasionally mistaken for fast growing members of the genus Dipodascus, which are characterized by irregularly branched, 10-14 μm wide hyphae and the production of single-spored asci. However, unlike Geotrichum, members of the genus Dipodascus lack dichotomous branching of the peripheral hyphae and their growth rates are generally less than 3 mm per day.[11]
Species in this genus include the following:[12]
Geotrichum is a genus of fungi found worldwide in soil, water, air, and sewage, as well as in plants, cereals, and dairy products; it is also commonly found in normal human flora and is isolated from sputum and feces. It was first described in 1809 by Johann Heinrich Friedrich Link.
The genus Geotrichum includes over 100 species. Some are welcome and even considered desirable. For example, skilled cheesemakers create conditions favorable for the formation of a Geotrichum candidum rind on certain goat's milk and cow's milk cheeses, proudly declaring the rind to be the most flavorful part of such cheeses. Another example is the presence of some Geotrichum species in fermented poi.
The most clinically relevant species is Saprochaeta capitata, formerly known as Geotrichum capitatum, with most cases occurring in Europe.
Saprochaete clavata, formerly known as Geotrichum clavatum, is an uncommon infection that has been associated with sporadic outbreaks. Geotrichum candidum is closely related to Saprochaeta sp., rarely isolated but may cause invasive and disseminated disease with high mortality Yeast-like and mold-like strains have been identified.
The most important risk factor for invasive fungal infection related to Geotrichum is severe immunosuppression, especially in hematological malignancies as acute leukemia, associated with profound and prolonged neutropenia.
Fungemia is very common, often with deep organ involvement (lung, liver, spleen, and central nervous system) and also skin and mucous membranes lesions. There is no optimal treatment for Geotrichum infections but based on existing data guidelines recommend amphotericin B with or without co-administered flucytosine or with voriconazole showing good in vitro susceptibility.
Mortality associated with Geotrichum-related infections is high, ranging from 57% to 80%.
Increasing the knowledge on Geotrichum related invasive fungal infections may improve early diagnosis and adequate treatment of these severe infections.
Geotrichum es un género de hongos de distribución cosmopolita, hallados en suelos, aguas, aire, detritos, plantas, cereales, productos lácteos; común en la flora normal humana y se aísla de esputo y heces.
La más común especie es:
Así como coloniza el tracto intestinal, Geotrichum puede causar infecciones oportunistas en huéspedes inmunocomprometidos; esas infecciones se refieren como geotricosis. Las infecciones usualmente se adquieren vía ingestión o inhalación.
En condiciones climáticas tropicales (30 ºC y 90% de humedad relativa), destruye los CD y DVD. Se reproduce sobre el soporte y destruye la información almacenada, primero degradando el borde externo del soporte. Esto ocurre porque el hongo se alimenta del carbono y el nitrógeno de la capa plástica de policarbonato, destruyendo así las pistas de información. Este hongo crece y se reproduce con facilidad dentro de la estructura de un CD o DVD en las condiciones expuestas.[1]
Geotrichum es un género de hongos de distribución cosmopolita, hallados en suelos, aguas, aire, detritos, plantas, cereales, productos lácteos; común en la flora normal humana y se aísla de esputo y heces.
Geotrichum est un genre de fonge de la famille des Dipodascaceae.
Geotrichum est présent dans le monde entier dans les sols, l'eau, l'air et les eaux usées, ainsi que dans les plantes, les céréales et les produits laitiers. Il se trouve donc couramment dans le microbiote de l'organisme humain et est isolé des expectorations et des selles.
Le principal facteur de risque d'infection fongique invasive liée à Geotrichum est l'immunosuppression grave, en particulier dans les hémopathies malignes, comme la leucémie aiguë, associée à une neutropénie profonde et prolongée.
La fongémie est très fréquente, souvent avec une atteinte profonde des organes (poumon, foie, rate et système nerveux central) et donc des lésions de la peau et des muqueuses.
Il n'y a pas de traitement optimal pour les infections de Geotrichum, mais l'amphotéricine B avec ou sans flucytosine coadministrée ou avec de la voriconazole semble avoir une bonne sensibilité in vitro.
La mortalité associée aux infections liées à Geotrichum est élevée, allant de 57% à 80%.
En approfondissant les connaissances sur les infections fongiques invasives liées à Geotrichum, on pourrait améliorer le diagnostic précoce et le traitement adéquat de ces infections graves.
Le genre Geotrichum comprend plus de 100 espèces :
Geotrichum est un genre de fonge de la famille des Dipodascaceae.
