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Fonsecaea

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https://www.readbyqxmd.com/read/28396061/-chromomycosis-acquired-in-a-non-tropical-area-a-case-report
#1
M S Ouédraogo, M-D Vignon-Pennamen, M Battistella, A Levy, M Feuilhade de Chauvin, A Petit
BACKGROUND: Chromomycosis, or chromoblastomycosis, is caused by cutaneous inoculation of dematiaceous fungi of telluric or plant origin. It is generally seen in tropical or subtropical zones. Treatment of the condition is known to be complex. Herein we report a case of chromomycosis contracted in a temperate region of Eastern Europe/Central Asia that was effectively treated with oral itraconazole and terbinafine in combination with cryotherapy. PATIENTS AND METHODS: A 44-year-old immunocompetent male subject consulted for a lesion on the buttocks that he had sustained 16 years earlier, and which, although never previously treated, had only become troublesome within the last few months...
April 7, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28363790/a-fungal-catalase-reacts-selectively-with-the-13s-fatty-acid-hydroperoxide-products-of-the-adjacent-lipoxygenase-gene-and-exhibits-13s-hydroperoxide-dependent-peroxidase-activity
#2
Tarvi Teder, William E Boeglin, Claus Schneider, Alan R Brash
The genome of the fungal plant pathogen Fusarium graminearum harbors six catalases, one of which has the sequence characteristics of a fatty acid peroxide-metabolizing catalase. We cloned and expressed this hemoprotein (designated as Fg-cat) along with its immediate neighbor, a 13S-lipoxygenase (cf. Brodhun et al., PloS One, e64919, 2013) that we considered might supply a fatty acid hydroperoxide substrate. Indeed, Fg-cat reacts abruptly with the 13S-hydroperoxide of linoleic acid (13S-HPODE) with an initial rate of 700-1300s(-1)...
March 28, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28355277/modulation-of-the-immune-response-by-fonsecaea-pedrosoi-morphotypes-in-the-course-of-experimental-chromoblastomycosis-and-their-role-on-inflammatory-response-chronicity
#3
Isaque Medeiros Siqueira, Raffael Júnio Araújo de Castro, Luiza Chaves de Miranda Leonhardt, Márcio Sousa Jerônimo, Aluízio Carlos Soares, Tainá Raiol, Christiane Nishibe, Nalvo Almeida, Aldo Henrique Tavares, Christian Hoffmann, Anamelia Lorenzetti Bocca
A common theme across multiple fungal pathogens is their ability to impair the establishment of a protective immune response. Although early inflammation is beneficial in containing the infection, an uncontrolled inflammatory response is detrimental and may eventually oppose disease eradication. Chromoblastomycosis (CBM), a cutaneous and subcutaneous mycosis, caused by dematiaceous fungi, is capable of inducing a chronic inflammatory response. Muriform cells, the parasitic form of Fonsecaea pedrosoi, are highly prevalent in infected tissues, especially in long-standing lesions...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28348446/exploring-the-genomic-diversity-of-black-yeasts-and-relatives-chaetothyriales-ascomycota
#4
M M Teixeira, L F Moreno, B J Stielow, A Muszewska, M Hainaut, L Gonzaga, A Abouelleil, J S L Patané, M Priest, R Souza, S Young, K S Ferreira, Q Zeng, M M L da Cunha, A Gladki, B Barker, V A Vicente, E M de Souza, S Almeida, B Henrissat, A T R Vasconcelos, S Deng, H Voglmayr, T A A Moussa, A Gorbushina, M S S Felipe, C A Cuomo, G Sybren de Hoog
The order Chaetothyriales (Pezizomycotina, Ascomycetes) harbours obligatorily melanised fungi and includes numerous etiologic agents of chromoblastomycosis, phaeohyphomycosis and other diseases of vertebrate hosts. Diseases range from mild cutaneous to fatal cerebral or disseminated infections and affect humans and cold-blooded animals globally. In addition, Chaetothyriales comprise species with aquatic, rock-inhabiting, ant-associated, and mycoparasitic life-styles, as well as species that tolerate toxic compounds, suggesting a high degree of versatile extremotolerance...
March 2017: Studies in Mycology
https://www.readbyqxmd.com/read/28323067/evaluation-of-a-real-time-impedance-analysis-platform-on-fungal-infection
#5
Jiufeng Sun, Dan Ning, Wenying Cai, Huiqiong Zhou, Huan Zhang, Dawei Guan, De Wu
End-point assays of in vitro cell proliferation and death have been employed to study the mechanisms of fungal pathogenesis and have shown the responses of host cells at individual time points. A new cell analysis technology has been developed that allows for the continuous measurement and quantification of cell activities, thus enabling the dynamic assessment of electrical impedance when various pathogens are cultured in vitro. In this study, this system was evaluated to determine the response of the cell line RAW264...
March 18, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28295235/cutaneous-manifestations-of-subcutaneous-and-systemic-fungal-infections-in-tropical-regions-a-retrospective-study-from-a-referral-center-in-southern-taiwan
#6
Wen-Chien Tsai, Chih-Hung Lee, Wei-Min Wu, Shang-Hung Lin, Yi-Chien Yang, Yu-Wen Cheng, Ji-Chen Ho, Kwei-Lan Liu
BACKGROUND: Deep cutaneous fungal infections, including subcutaneous mycoses and systemic fungal infection with cutaneous involvement, cause significant morbidity and mortality in light of increasing immunocompromised patients and global warming. Although a few studies reviewed deep fungal infections in temperate regions, a relevant study in tropical regions is lacking. We evaluated features of deep cutaneous fungal infections in southern Taiwan among the tropical regions. METHODS: We retrospectively reviewed all histopathological specimens with deep cutaneous fungal infections in a single referral center from 2001 to 2014 and successfully identified 23 cases...
March 13, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28209838/genome-sequence-of-type-strain-fonsecaea-multimorphosa-cbs-980-96-t-a-causal-agent-of-feline-cerebral-phaeohyphomycosis
#7
Aniele C Ribas Leao, Vinicius Almir Weiss, Vania Aparecida Vicente, Flavia Costa, Amanda Bombassaro, Roberto Tadeu Raittz, Maria Berenice R Steffens, Fabio Oliveira Pedrosa, Renata R Gomes, Valter Baura, Helisson Faoro, Michelle Zibetti Tadra Sfeir, Eduardo Balsanelli, Leandro F Moreno, M Javad Najafzadeh, Sybren de Hoog, Emanuel Maltempi Souza
A draft genome sequence of type strain Fonsecaea multimorphosa CBS 980.96(T) was obtained. This species was first isolated from a cat with cerebral phaeohyphomycosis in Queensland, Australia.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28187150/phylogenomic-analyses-reveal-the-diversity-of-laccase-coding-genes-in-fonsecaea-genomes
#8
Leandro Ferreira Moreno, Peiying Feng, Vinicius Almir Weiss, Vania Aparecida Vicente, J Benjamin Stielow, Sybren de Hoog
The genus Fonsecaea comprises black yeast-like fungi of clinical relevance, including etiologic agents of chromoblastomycosis and cerebral phaeohyphomycosis. Presence of melanin and assimilation of monoaromatic hydrocarbons and alkylbenzenes have been proposed as virulence factors. Multicopper oxidase (MCO) is a family of enzymes including laccases, ferroxidases and ascorbate oxidases which are able to catalyze the oxidation of various aromatic organic compounds with the reduction of molecular oxygen to water...
2017: PloS One
https://www.readbyqxmd.com/read/28053146/molecular-identification-of-chromoblastomycosis-clinical-isolates-in-guangdong
#9
Cindy Fransisca, Ya He, Zhiwen Chen, Hongfang Liu, Liyan Xi
Chromoblastomycosis is a chronic fungal infection of the skin and subcutaneous tissue. The most common etiologic agent encountered in Southern China is from the genus Fonsecaea. Fonsecaea species are often misidentified due to indistinct morphology features; furthermore, recent taxonomy revision was done on the fungi genus. Herein, a comprehensive evaluation with molecular sequencing data based on internal transcribed spacer (ITS) ribosomal DNA regions as molecular targets were implemented to 37 clinical isolates from chromoblastomycosis patients...
January 3, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/27904058/two-cases-of-chromomycosis-identified-by-molecular-phylogenetic-analysis
#10
Takayo Mitomo, Yukiko Ushigome, Tomoo Fukuda, Yoko Kano, Tetsuo Shiohara
Chromomycosis is an infection caused by dematiaceous fungi. These fungi belong to several genera with varied clinical presentations and parasitic forms. The disease is roughly classified into three types: chromoblastomycosis, black-grain mycetoma, and phaeohyphomycosis. While there are many kinds of dematiaceous fungi, the major etiologic agent is Fonsecaea pedrosoi, which to date has accounted for 90% of chromoblastomycosis cases. The genus Fonsecaea has recently been assessed via rRNA ITS sequence analysis, and species have been classified into F...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27893750/molecular-epidemiology-of-agents-of-human-chromoblastomycosis-in-brazil-with-the-description-of-two-novel-species
#11
Renata R Gomes, Vania A Vicente, Conceição M P S de Azevedo, Claudio G Salgado, Moises B da Silva, Flávio Queiroz-Telles, Sirlei G Marques, Daniel W C L Santos, Tania S de Andrade, Elizabeth H Takagi, Katia S Cruz, Gheniffer Fornari, Rosane C Hahn, Maria L Scroferneker, Rachel B Caligine, Mauricio Ramirez-Castrillon, Daniella P de Araújo, Daiane Heidrich, Arnaldo L Colombo, G S de Hoog
The human mutilating disease chromoblastomycosis is caused by melanized members of the order Chaetothyriales. To assess population diversity among 123 clinical strains of agents of the disease in Brazil we applied sequencing of the rDNA internal transcribed spacer region, and partial cell division cycle and β-tubulin genes. Strains studied were limited to three clusters divided over the single family Herpotrichiellaceae known to comprise agents of the disease. A Fonsecaea cluster contained the most important agents, among which F...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27833296/three-rare-cases-of-cutaneous-phaeohyphomycosis
#12
Aditi Chhonkar, Deepti Kataria, Swagata Tambe, Chitra S Nayak
Phaeohyphomycosis is a chronic infectious condition caused by dematiaceous fungi which usually involve the skin and subcutaneous tissue. Subcutaneous phaeohyphomycosis is characterised by papulonodules, verrucous, hyperkeratotic or ulcerated plaques, cysts, abscesses, pyogranuloma, non-healing ulcers or sinuses. In India, commonly associated genera are Exophiala, Phialophora, Cladosporium, Curvularia, Fonsecaea and Alternaria. This condition involves the presence of brown-walled hyphal structures in the dermis and epidermis...
May 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/27828652/response-of-chromoblastomycosis-to-voriconazole
#13
Alexandre Moretti de Lima, Gabriely Lessa Sacht, Lauren Zogbi Pereira de Paula, Gabriela Kimie Aseka, Hermann Soares Goetz, Maicon Felippe Gheller, Pedro de Freitas Silva Torraca
Chromoblastomycosis is a chronic fungal infection of the epidermis, dermis and subcutaneous tissue, in which the most common etiologic agent in Brazil is Fonsecaea pedrosoi. In more advanced cases we found many difficulties in their treatment, and therefore, we report a case of extensive and severe chromoblastomycosis, with therapeutical failure of first choice treatments, but good response to voriconazole.
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/27726899/first-case-of-chromoblastomycosis-due-to-phoma-insulana
#14
Francisca Hernández-Hernández, Jaime Vargas-Arzola, Oliver Pedro Ríos-Cruz, Erika Córdova-Martínez, Patricia Manzano-Gayosso, Aristeo Segura-Salvador
Chromoblastomycosis is a chronic infection, caused by pigmented fungi affecting skin and subcutaneous tissues characterized by verrucous nodules or plaques. Fonsecaea pedrosoi and Cladophialophora carrionii are the prevalent agents in the endemic areas. Phoma is an uncommon agent of human infection and involved mainly with phaeohyphomycosis cases. The case of a patient with a history of laceration in foot followed by verrucous aspect and scaly lesions, which had evolved for 27 years is presented. On physical examination disease was clinically compatible with chromoblastomycosis and the microscopic examination of scales showed fumagoid cells...
October 7, 2016: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/27626154/fonsecaea-pedrosoi-as-a-rare-cause-of-acute-conjunctival-ulceration
#15
Fatih Mehmet Adibelli, Nilgun Karabicak, Ali Akal, Tugba Goncu, Omer Faruk Yilmaz, Mehmet Bayraktar
Conjunctival ulceration accompanied with secretion and pain was observed in a 30-year-old male, 3 days after a perforating corneal trauma. Cultures of conjunctival ulcer samples grew Fonsecaea pedrosoi, a major causative agent of chromoblastomycosis that is typically transmitted during trauma. The conjunctival ulcer was successfully treated with amphotericin B, itraconazole, and fluconazole. This case report summarizes the diagnosis and treatment of a conjunctival ulcer due to F. pedrosoi, which is a rare complication of contaminated ocular trauma...
July 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/27504027/the-role-of-melanin-pathways-in-extremotolerance-and-virulence-of-fonsecaea-revealed-by-de-novo-assembly-transcriptomics-using-illumina-paired-end-sequencing
#16
X Q Li, B L Guo, W Y Cai, J M Zhang, H Q Huang, P Zhan, L Y Xi, V A Vicente, B Stielow, J F Sun, G S de Hoog
Melanisation has been considered to be an important virulence factor of Fonsecaea monophora. However, the biosynthetic mechanisms of melanisation remain unknown. We therefore used next generation sequencing technology to investigate the transcriptome and digital gene expression data, which are valuable resources to better understand the molecular and biological mechanisms regulating melanisation in F. monophora. We performed de novo transcriptome assembly and digital gene expression (DGE) profiling analyses of parent (CBS 122845) and albino (CBS 125194) strains using the Illumina RNA-seq system...
2016: Studies in Mycology
https://www.readbyqxmd.com/read/27491988/draft-genome-sequence-of-fonsecaea-nubica-strain-cbs-269-64-causative-agent-of-human-chromoblastomycosis
#17
Flávia F Costa, Sybren de Hoog, Roberto T Raittz, Vinicius A Weiss, Aniele C R Leão, Amanda Bombassaro, Jiufeng Sun, Leandro F Moreno, Emanuel M Souza, Fabio O Pedrosa, Maria Berenice R Steffens, Valter Baura, Michele Z Tadra-Sfeir, Eduardo Balsanelli, M Javad Najafzadeh, Renata R Gomes, Maria S Felipe, Marcus Teixeira, Germana D Santos, Liyan Xi, Mauro Antônio Alves de Castro, Vânia A Vicente
On the basis of multilocus phylogenetic data, Fonsecaea nubica was described in 2010 as a molecular sibling of F. monophora, an established agent of the human skin disease chomoblastomycosis in tropical zones. Genome analysis of these pathogens is mandatory to identify genes involved in the interaction with host and virulence.
2016: Genome Announcements
https://www.readbyqxmd.com/read/27469960/draft-genome-sequence-of-fonsecaea-monophora-strain-cbs-269-37-an-agent-of-human-chromoblastomycosis
#18
Amanda Bombassaro, Sybren de Hoog, Vinicius A Weiss, Emanuel M Souza, Aniele C R Leão, Flávia F Costa, Valter Baura, Michele Z Tadra-Sfeir, Eduardo Balsanelli, Leandro F Moreno, Roberto T Raittz, Maria Berenice R Steffens, Fabio O Pedrosa, Jiufeng Sun, Liyan Xi, Anamélia L Bocca, Maria S Felipe, Marcus Teixeira, Germana D Santos, Flávio Q Telles Filho, Conceição M P S Azevedo, Renata R Gomes, Vânia A Vicente
The black yeast Fonsecaea monophora is one of the main etiologic agents of chromoblastomycosis in humans. Its pathogenicity profile is more invasive than that of related Fonsecaea species, causing brain infection in addition to (sub)cutaneous infections.
2016: Genome Announcements
https://www.readbyqxmd.com/read/27408767/cerebral-phaeohyphomycosis-by-fonsecaea-monophora-report-in-a-patient-with-aids-and-a-ring-enhancing-lesion
#19
Prabhava Bagla, Michael Loeffelholz, Lucas S Blanton
Fungal infections are infrequent causes of brain abscesses. Fonsecaea monophora is a dematiaceous fungus that appears to be neurotropic. We report a case of Fonsecaea monophora infection in a patient with acquired immunodeficiency syndrome, and review previous reports of brain abscesses by this organism.
June 2016: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/27330937/chromoblastomycosis-due-to-fonsecaea-monophora-misdiagnosed-as-sporotrichosis-and-cutaneous-tuberculosis-in-a-pulmonary-tuberculosis-patient
#20
Dongmei Shi, Wei Zhang, Guixia Lu, G Sybren de Hoog, Guanzhao Liang, Huan Mei, Hailin Zheng, Yongnian Shen, Weida Liu
Chromoblastomycosis is caused by dematiaceous fungi. It develops after inoculation of the organism into the skin. We report a case of chromoblastomycosis in a pulmonary tuberculosis patient without known history of trauma. The lesions were initially diagnosed as sporotrichosis and skin tuberculosis. Histopathology of scales and skin biopsy specimen revealed sclerotic bodies, the hallmark of chromoblastomycosis. The causative organism was identified as Fonsecaea monophora by rDNA ITS sequencing. The lesions recovered markedly after two month treatment with oral terbinafine 250 mg daily according to drug sensitive test in vitro in combination with local thermotherapy...
March 2016: Medical Mycology Case Reports
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