keyword
MENU ▼
Read by QxMD icon Read
search

Dematiaceous fungi

keyword
https://www.readbyqxmd.com/read/29138616/bipolaris-marantae-sp-nov-a-novel-helminthosporoid-species-causing-foliage-blight-of-the-garden-plant-maranta-leuconeura-in-brazil
#1
Carla Cristina Gomes Lourenço, Janaina Lana Alves, Eduardo Guatimosim, Adans Colman, Robert Weingart Barreto
A severe leaf spot, turning to foliage blight, was observed on leaves of Maranta leuconeura growing in a garden in Brazil (state of Rio de Janeiro) in 2015. A dematiaceous hyphomycete bearing a morphology typical of a helminthosporoid fungi was regularly found in association with diseased tissues. The fungus was isolated and pathogenicity was demonstrated through the completion of Koch's postulates. A morphology and molecular analysis led to the conclusion that the fungus belonged to the genus Bipolaris, which is characterized by having fusiform conidia, externally thickened and truncate hila and a bipolar pattern of germination...
September 2017: Mycobiology
https://www.readbyqxmd.com/read/29102309/challenges-in-culture-negative-cases-of-madurella-mycetomatis-a-case-report-re-accentuating-pcr-as-an-essential-diagnostic-tool
#2
S K, S Das, D Pandhi, G Rai, M A Ansari, C Gupta, S Haque, S A Dar
Identification of dematiaceous fungi responsible for black-grain mycetoma has remained cumbersome and time consuming for years leading to delayed diagnosis and thereby increased agony to patients. Moreover, difficult morphology of some of these fungi demanding enough expertise for species identification in addition to culture-negativity has often led to misdiagnosis and hence inapt treatment to the patients. We report the identification of Madurella mycetomatis from culture-negative black granules discharged from foot nodular lesions of a 27 years old male using PCR followed by sequencing of the internal transcribed spacer region...
October 25, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29080677/impaired-specific-anti-fungal-immunity-in-card9-deficient-patients-with-phaeohyphomycosis
#3
Xiaowen Wang, Ruijun Zhang, Weiwei Wu, Yinggai Song, Zhe Wan, Wenling Han, Ruoyu Li
Phaeohyphomycosis is a group of severe infections caused by dematiaceous fungi. We previously identified CARD9 deficiencies in four Chinese patients with phaeohyphomycosis caused by Phialophora verrucosa. In this study, we sought to identify the genetic and immunological mechanisms underlying rare dematiaceous fungal infections in three otherwise healthy patients with phaeohyphomycosis caused by Exophiala spinifera, Ochroconis musae, and Corynespora cassiicola. CARD9 sequencing in these patients revealed one novel mutation (p...
October 25, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28994174/subcutaneous-phaeohyphomycosis-in-kidney-transplant-recipients-a-series-of-seven-cases
#4
Haridasan Satish, Sreejith Parameswaran, B H Srinivas, C Laxmisha, B S Bibilash, S Rakesh, R Jayasurya, Padhi Rajesh, S Ezhilnilavan, D K Avinash, P S Priyamvada
BACKGROUND: Superficial and deep fungal infections are more frequent in transplant recipients primarily because of the failure of cell-mediated immunity and lesser amount of antigen-presenting Langerhans cells in their epidermis. Here we report seven cases of post-renal transplant subcutaneous phaeohyphomycosis, all of which manifested within 1 year after transplantation and were unresponsive to prolonged courses of itraconazole. This is the first case series, to our knowledge, of phaeohyphomycosis in transplant recipients in India...
October 9, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28991328/-nasal-phaeohyphomycosis-by-curvularia-spicifera-in-pediatric-patient-with-neutropenia-and-acute-myeloid-leukemia
#5
Constanza Bay, Tamara González, Gonzalo Munoz, Paulette Legarraga, Cecilia Vizcaya, Katia Abarca
There are very few reports of pediatric patients with infections by dematiaceous filamentous fungi. In this publication we report a case of invasive fungal infection of the nasal septum by Curvularia spicifera in a pediatric patient with acute myeloid leukemia. The patient presented with a painful scabby wound in the nasal vestibule. Culture and universal PCR were consistent with Curvularia spicifera. Early management with surgical debridement and bi-associated antifungal therapy achieved complete resolution of the lesions, with no evidence of dissemination and relapses...
June 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28797495/emergence-of-the-molds-other-than-aspergillus-in-immunocompromised-patients
#6
REVIEW
Sana Arif, John R Perfect
Immunocompromised patients are at high risk for invasive fungal infections (IFIs); although Aspergillus remains the most common IFI caused by molds, other fungi, such as Mucorales, dematiaceous molds, and Fusarium spp, are being seen with increasing frequency. Presentations can vary, but sinopulmonary and disseminated infections are common. Our understanding of the pathogenesis of these infections is rudimentary. Fungal cultures and histopathology remain the backbone of diagnostics, as no good serologic markers are available...
September 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/28771470/chromoblastomycosis-in-india-review-of-169-cases
#7
REVIEW
Reshu Agarwal, Gagandeep Singh, Arnab Ghosh, Kaushal Kumar Verma, Mragnayani Pandey, Immaculata Xess
Chromoblastomycosis (CBM) is a chronic, progressive, cutaneous and subcutaneous fungal infection following the traumatic implantation of certain dematiaceous fungi. The disease has worldwide prevalence with predominant cases reported from humid tropical and subtropical regions of America, Asia, and Africa. Diagnosis is often delayed or misdirected either due to poor degree of clinical suspicions or clinical simulation of dermatological conditions. The infection is not uncommon in India and several case reports from the sub-Himalayan belt and western and eastern coasts of India have been published; however, very few have reviewed the cases...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28578629/chaetomiaceae-fungi-novel-pathogens-of-equine-neurotropic-phaeohyphomycosis
#8
Quinci Plumlee, Courtney Meason-Smith, Alexandra Dieterly, Gabriel Gomez, Brian F Porter, Aline Rodrigues Hoffmann
Many previously unrecognized fungi are emerging as potential pathogens. One such group is dematiaceous fungi of the Chaetomiaceae family (phylum Ascomycota, class Sordariomycetes). These fungi are rare causes of opportunistic, neurotropic phaeohyphomycosis in humans but are not known to cause similar infections in animals. The aims of this study were to investigate equine hyphal mycotic encephalitis, characterize key histopathologic features, and classify causative organisms with molecular diagnostic techniques...
September 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28558644/a-case-of-subcutaneous-phaeohyphomycosis-associated-with-leprosy
#9
Márcia M R Teixeira, Claudia B Assunção, Renata R Gomes, Fabiana Rocha-Silva, Sônia M de Figueiredo, Elen R R Teixeira, Adriana S Carneiro, Rogério J M B Júnior, Vânia Vicente, Rachel Basques Caligiorne
Subcutaneous phaeohyphomycosis is a form of infection caused by dematiaceous fungi and frequently reported in the literature. It is considered as an emerging mycosis because it is increasingly reported among immunosuppressive patients. The most commonly cited etiologic agent is Exophiala jeanselmei, followed by Alternaria spp. We present a case of a 48-year-old woman, with a history of lepromatous leprosy, using corticosteroid in immunosuppressive doses due to a type 2 repetitive reaction leprosy outbreak, revealing subcutaneous phaeohyphomycosis lesions...
May 30, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28543666/high-resolution-melting-analysis-assay-for-identification-of-fonsecaea-species
#10
Minglan Shi, Xiqing Li, Jiao Feng, Shulin Jia, Xing Xiao, Chunmei Chen, Cindy Fransisca, Liyan Xi, Junmin Zhang
BACKGROUND: Chromoblastomycosis (CBM) is a chronic fungal disease. In China, the principle etiologic agent was a group of dematiaceous fungi, including Fonsecaea monophora, Fonsecaea nubica, and Cladophialophora carrionii. Although the Fonsecaea species have similar morphology, their pathogenicity is quite different. This study aims to establish a new solution for early identification of Fonsecaea species because of their distinctive potential infection risk. METHODS: Five reference strains and 35 clinical isolates from patients with CBM, preserved in our laboratory, were used in this study...
May 22, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28491444/cerebral-pyogranulomatous-encephalitis-caused-by-cladophialophora-bantiana-in-a-15-week-old-domestic-shorthair-kitten
#11
Elise B Russell, Marcus N Gunew, Michelle M Dennis, Catriona L Halliday
CASE SUMMARY: A case of cerebral phaeohyphomycosis caused by Cladophialophora bantiana is described in a 15-week-old domestic shorthair kitten. RELEVANCE AND NOVEL INFORMATION: Cerebral phaeohyphomycosis is a rare condition in cats caused by dematiaceous fungi. This report describes the clinical and histopathological findings in the youngest case documented in a feline, provides a brief review of aetiology, diagnosis, treatment and prognosis of cerebral phaeohyphomycosis and demonstrates the importance of molecular diagnostics in accurate mycotic species identification...
July 2016: JFMS open reports
https://www.readbyqxmd.com/read/28478966/a-rare-case-of-multiple-brain-abscess-and-probably-disseminated-phaeohyphomycosis-due-to-cladophialophora-bantiana-in-an-immunosuppressed-individual-from-india
#12
S Lahiri Mukhopadhyay, A Mahadevan, V H Bahubali, R Dawn Bharath, A R Prabhuraj, S Maji, N Siddaiah
Cladophialophora bantiana, a dematiaceous neurotropic mold causes rare and lethal brain abscess, commonly in immunocompetent hosts. We report a rare and probably a case of disseminated infection with this black mold in an immunosuppressed individual from India. A 55-year-old diabetic male presented with severe headache, blurred-vision, behavioural abnormalities, eye-pain and ear-discharge. He was undergoing treatment for hypertension, prostatomegaly and obstructive pulmonary disease. He was on steroids for the past six years for uveitis...
May 3, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28396061/-chromomycosis-acquired-in-a-non-tropical-area-a-case-report
#13
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/28392288/fontana-masson-stain-in-fungal-infections
#14
Kelly Leigh West, Alan D Proia, Puja Kumari Puri
BACKGROUND: Fontana-Masson (FM) staining is a histopathology technique used to identify dematiaceous fungi. The result often guides initial species identification and antifungal treatment; however, there is evidence that nondematiaceous fungi might react with this stain. Few studies in the current literature address this issue. OBJECTIVE: Our aim was to classify the FM staining patterns of common fungal pathogens for use by pathologists attempting to accurately identify fungi on histopathologic examination...
April 6, 2017: Journal of the American Academy of Dermatology
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
#15
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/28329593/cutaneous-alternariosis-in-an-immunocompetent-patient
#16
Ravi Chandubhai Patel, Matthew Helm, Ikue Shimizu
Alternaria species are a type of dematiaceous fungi that cause a wide spectrum of disease with cutaneous infections being the most common. These infections are most common in immunocompromised individuals. However, only a few cases of primary cutaneous alternariosis have been reported in immunocompetent patients. We present a case of an otherwise healthy 13-year-old male who presented with primary cutaneous alternariosis on his left ankle that responded to the use of topical econazole and oral itraconazole...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28275534/disseminated-phaeohyphomycosis-in-a-dog
#17
Lana S Rothenburg, Timothy A Snider, Allison Wilson, Anthony W Confer, Akhilesh Ramachandran, Rinosh Mani, Theresa Rizzi, Laura Nafe
Phaeohyphomycosis is a rare but emerging disease caused by dematiaceous fungi. Here we describe the case of an immunosuppressed dog with disseminated phaeohyphomycosis secondary to Bipolaris spicifera infection. Regionally extensive infiltration of the paw pads, skin, myocardium, liver, renal interstitium and diaphragm was identified on histopathology. Candida glabrata and Fusarium oxysporum were also cultured from multiple sites post-mortem. The dog was treated with fluconazole, itraconazole, terbinafine and liposomal amphotericin B, but was euthanized due to its poor prognosis after 12 days of therapy...
March 2017: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28217468/subcutaneous-phaeohyphomycosis-in-an-immunocompetent-individual-a-case-report
#18
Sudharani Chintagunta, Geetakiran Arakkal, Sudha V Damarla, Akshay K Vodapalli
Phaeohyphomycosis is a rare mycotic infection caused by various heterogenous groups of phaeoid (dematiaceous) fungi involving the skin and subcutaneous tissue. Common clinical manifestations are subcutaneous abscesses or cystic swellings. Here, we report a case of subcutaneous phaeohyphomycosis presenting as multiple asymptomatic cystic swellings over the hands and feet without any predisposing factors. Histopathology showed granulomatous inflammation and special stain with Grocott's methanamine silver stain revealed broad pigmented hyphae...
January 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/28149676/genomic-insight-into-pathogenicity-of-dematiaceous-fungus-corynespora-cassiicola
#19
Hong Keat Looi, Yue Fen Toh, Su Mei Yew, Shiang Ling Na, Yung-Chie Tan, Pei-Sin Chong, Jia-Shiun Khoo, Wai-Yan Yee, Kee Peng Ng, Chee Sian Kuan
Corynespora cassiicola is a common plant pathogen that causes leaf spot disease in a broad range of crop, and it heavily affect rubber trees in Malaysia (Hsueh, 2011; Nghia et al., 2008). The isolation of UM 591 from a patient's contact lens indicates the pathogenic potential of this dematiaceous fungus in human. However, the underlying factors that contribute to the opportunistic cross-infection have not been fully studied. We employed genome sequencing and gene homology annotations in attempt to identify these factors in UM 591 using data obtained from publicly available bioinformatics databases...
2017: PeerJ
https://www.readbyqxmd.com/read/27904058/two-cases-of-chromomycosis-identified-by-molecular-phylogenetic-analysis
#20
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
keyword
keyword
33335
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"