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chromoblastomycosis

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https://www.readbyqxmd.com/read/29785921/case-report-successful-treatment-of-chromoblastomycosis-caused-by-fonsecaea-monophora-in-a-patient-with-psoriasis-using-itraconazole-and-acitretin
#1
Fangfang Bao, Qihua Wang, Changping Yu, Panpan Shang, Lele Sun, Guizhi Zhou, Mei Wu, Furen Zhang
Chromoblastomycosis is a worldwide chronic subcutaneous infection caused by dematiaceous fungi and clinically characterized by verrucous lesions. Herein, we report a rare case of chromoblastomycosis caused by Fonsecaea monophora in a 60-year-old male carpenter with a 40-year history of psoriasis from Shandong in northern China. A fungal infection coexisting with psoriasis presents a management dilemma. Our patient responded well to combined itraconazole and acitretin therapy and the lesions resolved completely after 1 month of treatment...
May 21, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29669009/melanin-quantification-and-protection-against-oxidative-stress-in-chromoblastomycosis-agents
#2
Daiane Heidrich, Valeriano Antonio Corbellini, Sandra Denise Camargo Mendes, Elissa Kerli Fernandes, Letícia Lazzarotto, Amanda Carvalho Ribeiro, Régis Adriel Zanette, Maria Lúcia Scroferneker
Chromoblastomycosis (CBM) is a chronic cutaneous and subcutaneous infection caused by melanized fungal species. We quantified the extractable melanin of 77 strains of CBM agents distributed within five genera. Moreover, resistance to oxidative stress was evaluated in strains exposed or not to the melanin inhibitor tricyclazole. The median percentage of melanin mass extracted from dry fungal mass varied from 0.69 (Rhinocladiella similis) to 3.81 (Phialophora americana). Inhibition of melanin synthesis decreased survival rates to hydrogen peroxide...
April 14, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29656841/from-phaeohyphomycosis-to-disseminated-chromoblastomycosis-a-retrospective-study-of-infections-caused-by-dematiaceous-fungi
#3
E Thomas, A Bertolotti, A Barreau, J Klisnick, P Tournebize, G Borgherini, N Zemali, J Jaubert, G Jouvion, S Bretagne, S Picot
OBJECTIVE: Infections caused by dematiaceous fungi are more common in tropical and subtropical areas. We aimed to describe the clinical, microbiological and therapeutic aspects of case patients diagnosed at a University Hospital located on an Indian Ocean island. PATIENTS AND METHODS: We performed an observational retrospective study of infections caused by dematiaceous fungi diagnosed at the University Hospital of Saint-Pierre, Reunion, from 2000 to 2015. Mycological identifications were performed at the National Reference Center for Invasive Mycosis and Antifungal Agents (Paris)...
April 12, 2018: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/29581111/combination-of-amphotericin-b-and-terbinafine-against-melanized-fungi-associated-with-chromoblastomycosis
#4
S Deng, W Lei, G S de Hoog, L Yang, R G Vitale, H Rafati, M Seyedmousavi, A Tolooe, H van der Lee, W Liao, P E Verweij, S Seyedmousavi
Our in vitro studies showed that combination of amphotericin B and terbinafine had synergistic effects against the majority of melanized fungi associated with chromoblastomycosis (CBM) and similar infections, including Cladophialophora carrionii, C. arxii, Exophiala dermatitidis, E. spinifera, Fonsecaea monophora , F. nubica, F. pedrosoi, and Phialophora verrucosa. This combination could provide an option for treatment of severe or unresponsive cases of CBM, particularly in cases due to species of Fonsecaea and Cladophialophora ...
March 26, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29552459/differential-distribution-patterns-of-fonsecaea-agents-of-chromoblastomycosis-exemplified-by-the-first-case-due-to-f-monophora-from-argentina
#5
Marcelo Label, Luciana C Karayan, Sybren De Hoog, Javier Afeltra, Togo Bustamante, Roxana G Vitale
Chromoblastomycosis is a mutilating infection of the skin and subcutaneous tissues caused by melanized fungi belonging to the order Chaetothyriales. Proven cases of the main agent, Fonsecaea pedrosoi are mainly limited to (sub)tropical, humid climates of Latin and Central America and the Caribbean. Fonsecaea monophora has a global distribution along the equator. Cases outside the (sub)tropics have thus far mostly been considered to have been imported, but here we report the first endemic case by F. monophora from Argentina...
June 2018: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/29538737/black-yeasts-in-the-omics-era-achievements-and-challenges
#6
Leandro Ferreira Moreno, Vania Aparecida Vicente, Sybren de Hoog
Black yeasts (BY) comprise a group of polyextremotolerant fungi, mainly belonging to the order Chaetothyriales, which are capable of colonizing a wide range of extreme environments. The tolerance to hostile habitats can be explained by their intrinsic ability to survive under acidic, alkaline, and toxic conditions, high temperature, low nutrient availability, and osmotic and mechanical stress. Occasionally, some species can cause human chromoblastomycosis, a chronic subcutaneous infection, as well as disseminated or cerebral phaeohyphomycosis...
April 1, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29481557/transformation-of-fonsecaea-pedrosoi-into-sclerotic-cells-links-to-the-refractoriness-of-experimental-chromoblastomycosis-in-balb-c-mice-via-a-mechanism-involving-a-chitin-induced-impairment-of-ifn-%C3%AE-production
#7
Bilin Dong, Zhongsheng Tong, Ruoyu Li, Sharon C-A Chen, Weihuang Liu, Wei Liu, Yao Chen, Xu Zhang, Yiqun Duan, Dongsheng Li, Liuqing Chen
Fonsecaea pedrosoi (F. pedrosoi) is the most common agent of chromoblastomycosis. Transformation of this fungus from its saprophytic phase into pathogenic sclerotic cells in tissue is an essential link to the refractoriness of this infection. Experimental studies in murine models have shown that the absence of CD4+ T cells impairs host defense against F. pedrosoi infection. Clinical research has also suggested that a relatively low level of the Th1 cytokine INF-γ and inefficient T cell proliferation are simultaneously present in patients with severe chromoblastomycosis upon in vitro stimulation with ChromoAg, an antigen prepared from F...
February 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29458863/genetic-manipulation-of-fonsecaea-pedrosoi-using-particles-bombardment-and-agrobacterium-mediated-transformation
#8
Camille Silva Florencio, Fabiana Alves Silva Brandão, Marcus de Mello Teixeira, Anamélia Lorenzetti Bocca, Maria Sueli S Felipe, Vânia Aparecida Vicente, Larissa Fernandes
Fonsecaea pedrosoi, a melanized fungal pathogen that causes Chromoblastomycosis, a human disease with a worldwide distribution. Biolistic is a widely used technique for direct delivery of genetic material into intact cells by particles bombardment. Another well-established transformation method is Agrobacterium-mediated transformation (ATMT), which involves the transfer of a T-DNA from the bacterium to the target cells. In F. pedrosoi there are no reports of established protocols for genetic transformation, which require optimization of physical and biological parameters...
March 2018: Microbiological Research
https://www.readbyqxmd.com/read/29444317/melanization-of-a-meristematic-mutant-of-fonsecaea-monophora-increase-the-pathogenesis-in-a-balb-c-mice-infection-model
#9
Minmin Jiang, Wenying Cai, Junmin Zhang, Ting Xie, Liyan Xi, Xiqing Li, Jiufeng Sun
The role of melanin in agents of chromoblastomycosis in vivo still remains unclear. In this study, we addressed the question in a BALB/c mice infection model by using an albino mutant, which generated from a melanized meristematic mutant of F. monophora. The most severe clinical manifestations of infected mice were observed at 10-25 dpi (day post infection) and 7-15 dpi for melanized and albino strain, respectively. Histopathologic examination were similar in both groups at 15 dpi (acute infection phase), but not at 30 dpi (sustained infection phase) and 45 dpi (recovery phase)...
February 12, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29313921/image-gallery-uncommon-presentation-of-facial-chromoblastomycosis-caused-by-cladophialophora-carrionii
#10
R-J Wang, R-Y Li
No abstract text is available yet for this article.
December 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29214105/dermoscopy-of-chromoblastomycosis
#11
Sweta Subhadarshani, Deepika Yadav
Chromoblastomycosis is a chronic cutaneous fungal infection commonly caused by Fonsacea and Cladophialophora spp . Dermoscopy is a non-invasive, real-time diagnostic tool for rapid bedside diagnosis of various inflammatory and non-inflammatory disorders and can be an excellent modality for evaluation of cutaneous mycosis, for which it shows characteristic brown dots, crust, scales and yellow orange structures.
October 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/29209318/the-major-chromoblastomycosis-etiologic-agent-fonsecaea-pedrosoi-activates-the-nlrp3-inflammasome
#12
Raffael Júnio Araújo de Castro, Isaque Medeiros Siqueira, Márcio Sousa Jerônimo, Angelina Maria Moreschi Basso, Paulo Henrique de Holanda Veloso Junior, Kelly Grace Magalhães, Luiza Chaves Leonhardt, Stephan Alberto Machado de Oliveira, Pedro Henrique Bürgel, Aldo Henrique Tavares, Anamélia Lorenzetti Bocca
Fonsecaea pedrosoi is the main etiologic agent of chromoblastomycosis (CBM), one of the most prevalent subcutaneous mycosis in tropical and subtropical countries. CBM is a poorly characterized chronic infection that commonly starts after transcutaneous inoculation of conidia and saprophytic hyphae of F. pedrosoi . Recently, we have shown that unlike conidia, hyphae and muriform cells (the parasitic morphotype) of F. pedrosoi promotes an intense inflammatory response pattern in vivo , which comprises the production of an inflammasome-derived cytokine, IL-1β...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29178398/successful-treatment-of-chromoblastomycosis-of-10-year-duration-due-to-fonsecaea-nubica
#13
Liya He, Jianchi Ma, Xin Mei, Sha Lu, Xiqing Li, Liyan Xi
We report a case of chromoblastomycosis due to the presence of large plaque and verrucous hyperplasia lesions on the left upper limb, with elbow abnormal activities, in a 56-year-old male. The diagnosis of chromoblastomycosis was based on gross and microscopic morphologies, histopathological examination and clinical manifestation. Molecular tools were applied to identifying the causative agent Fonsecaea nubica, which is rarely reported to be associated with chromoblastomycosis. The patient was initially treated orally with terbinafine (250 mg/day) and itraconazole (200 mg/day), subsequently patient received thermotherapy (45-50°C, 3 h/day) for 1 month...
April 2018: Mycoses
https://www.readbyqxmd.com/read/29165523/-chromoblastomycosis-clinical-and-microbiological-characteristics-of-a-neglected-disease
#14
Roberto Ventura-Flores, Virgilio Failoc-Rojas, Heber Silva-Díaz
Chromoblastomycosis is a neglected and chronic fungal disease, mainly affects the subcutaneous tissue in limbs of people with occupational risk. Here, we report two cases of adult patients from tropical regions of northern Peru, affected with chronic erythematous scaly lesions and multiple blackheads, pain, itching and scarring in older areas of injury. Direct examination of the dermal scales showed typical of this disease fumagoides cells; Fonsecaea pedrosoi and Fonsecaea sp. were isolated for at first and second case respectively...
August 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29151624/biodiversity-and-human-pathogenicity-of-phialophora-verrucosa-and-relatives-in-chaetothyriales
#15
Y Li, J Xiao, G S de Hoog, X Wang, Z Wan, J Yu, W Liu, R Li
Phialophora as defined by its type species P. verrucosa is a genus of Chaetothyriales , and a member of the group known as 'black yeasts and relatives'. Phialophora verrucosa has been reported from mutilating human infections such as chromoblastomycosis, disseminated phaeohyphomycosis and mycetoma, while morphologically similar fungi are rather commonly isolated from the environment. Phenotypes are insufficient for correct species identification, and molecular data have revealed significant genetic variation within the complex of species currently identified as P...
June 2017: Persoonia
https://www.readbyqxmd.com/read/29136064/chromoblastomycosis-infection-from-a-house-plant
#16
Gerard Smith, Andrea F Chen, Eduardo Weiss
No abstract text is available yet for this article.
October 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/29062304/comparative-genomics-of-sibling-species-of-fonsecaea-associated-with-human-chromoblastomycosis
#17
Vania A Vicente, Vinícius A Weiss, Amanda Bombassaro, Leandro F Moreno, Flávia F Costa, Roberto T Raittz, Aniele C Leão, Renata R Gomes, Anamelia L Bocca, Gheniffer Fornari, Raffael J A de Castro, Jiufeng Sun, Helisson Faoro, Michelle Z Tadra-Sfeir, Valter Baura, Eduardo Balsanelli, Sandro R Almeida, Suelen S Dos Santos, Marcus de Melo Teixeira, Maria S Soares Felipe, Mariana Machado Fidelis do Nascimento, Fabio O Pedrosa, Maria B Steffens, Derlene Attili-Angelis, Mohammad J Najafzadeh, Flávio Queiroz-Telles, Emanuel M Souza, Sybren De Hoog
Fonsecaea and Cladophialophora are genera of black yeast-like fungi harboring agents of a mutilating implantation disease in humans, along with strictly environmental species. The current hypothesis suggests that those species reside in somewhat adverse microhabitats, and pathogenic siblings share virulence factors enabling survival in mammal tissue after coincidental inoculation driven by pathogenic adaptation. A comparative genomic analysis of environmental and pathogenic siblings of Fonsecaea and Cladophialophora was undertaken, including de novo assembly of F...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29025254/chromoblastomycosis-of-the-leg
#18
Akash Pramod Sali, Ayushi Sahay
We herein report a case of chromoblastomycosis presenting as a verrucous lesion over the leg. A 56-year-old male patient was a known case of carcinoma larynx and was treated for the same. At presentation to our hospital, the patient, in addition to the recurrent local disease, was suspected to have second primary in the form of verrucous carcinoma of the leg. Histopathological examination of the skin biopsy revealed the presence of characteristic pigmented sclerotic bodies with pseudoepitheliomatous hyperplasia of the overlying epithelium...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/28992604/photodynamic-effects-on-fonsecaea-monophora-conidia-and-raw264-7-in-vitro
#19
Xiuwen Yi, Cindy Fransisca, Ya He, Yinghui Liu, Sha Lu, Liya He, Liyan Xi
Chromoblastomycosis (CBM), one of the neglected tropical diseases, is hard to cure and easy to be recurrent. Many studies suggest that macrophage is involved in the pathogenesis of chromoblastomycosis and the fungicidal effect of 5-Aminolaevulinic Acid-Based Photodynamic Therapy (ALA-PDT) against F. monophora (one of the main causative agent of chromoblastomycosis) has shown great promise. However, the fungicidal ability of ALA-PDT to F. monophora is still controversial and the molecular mechanism and immune mechanism of ALA-PDT against F...
November 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28992137/molecular-identification-of-chromoblastomycosis-clinical-isolates-in-guangdong
#20
Cindy Fransisca, Ya He, Zhiwen Chen, Hongfang Liu, Liyan Xi
No abstract text is available yet for this article.
November 1, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
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