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Deep mycosis

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https://www.readbyqxmd.com/read/29771758/opportunistic-fungal-infection-in-children-and-management
#1
Joseph M Lam
PURPOSE OF REVIEW: An opportunistic mycosis is a fungal agent of low pathogenicity that specifically infects immunocompromised hosts. Advances in transplantation, preterm care, immunosuppressive therapies and intensive care, have lead to the emergence of pediatric patients with serious immunodeficiency who are vulnerable to nonpathogenic fungi. RECENT FINDINGS: The advent of the use of biologic agents in pediatric disease as well as the advances in care of preterm and immunosuppressed patients opens up a new cohort of patients at risk of opportunistic mycotic infections...
May 15, 2018: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/29593263/detection-of-coccidioides-posadasii-from-xerophytic-environments-in-venezuela-reveals-risk-of-naturally-acquired-coccidioidomycosis-infections
#2
Primavera Alvarado, Marcus de Melo Teixeira, Lela Andrews, Alexis Fernandez, Gerardo Santander, Adina Doyle, Magaly Perez, Francisco Yegres, Bridget Marie Barker
A wide range of mammals are susceptible to infection by the fungal species Coccidioides immitis and C. posadasii. In humans, 60% of infections are asymptomatic; however, certain patients may develop a severe and deep systemic mycosis called coccidioidomycosis. Genetic analysis suggests that the majority of clinical isolates recovered from South America are C. posadasii; however, little is known about the prevalence, species distribution, and ecological factors that favor the occurrence of this pathogen in those areas...
March 29, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29517539/67ga-scintigraphy-for-assessment-of-disease-severity-and-treatment-response-in-patients-with-paracoccidioidomycosis
#3
Lilian Yuri Itaya Yamaga, Gil Benard, Tomoco Watanabe, Marcelo Buarque de Gusmão Funari, Fausto Haruki Hironaka, Carlos Alberto Buchpighel, Maria Aparecida Shikanai-Yasuda
OBJECTIVE: The evaluation of therapy response of patients with deep mycosis is a major challenge. The aim of this study was to assess the severity of disease at admission and evaluate treatment response of patients with paracoccidioidomycosis using Ga scintigraphy. SUBJECTS AND METHODS: Seventy-three patients with fully active disease were enrolled. A scoring system based on clinicoradiological and serological evaluation and Ga scan was devised. Pretherapy Ga score of 73 patients was compared with clinicoradiological and serological scores...
May 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29476824/functional-characterization-of-the-sporothrix-schenckii-ktr4-and-ktr5-mannosyltransferases-involved-in-the-n-linked-glycosylation-pathway
#4
Luz A López-Ramírez, Nahúm V Hernández, Nancy E Lozoya-Pérez, Leila M Lopes-Bezerra, Héctor M Mora-Montes
Sporothrix schenckii is one of the causative agents of the deep-seated mycosis sporotrichosis, a fungal infection with worldwide distribution. Fungus-specific molecules and biosynthetic pathways are potential targets for the development of new antifungal drugs. The MNT1/KRE2 gene family is a group of genes that encode fungus-specific Golgi-resident mannosyltransferases that participate in the synthesis of O-linked and N-linked glycans. While this family is composed of five and nine members in Candida albicans and Saccharomyces cerevisiae, respectively, the S...
April 2018: Research in Microbiology
https://www.readbyqxmd.com/read/29187715/-a-silkworm-infection-model-to-evaluate-antifungal-drugs-for-cryptococcosis
#5
Yasuhiko Matsumoto, Masaki Ishii, Kiminori Shimizu, Susumu Kawamoto, Kazuhisa Sekimizu
The development of effective drugs against fungal diseases involves performing infection experiments in animals to evaluate candidate therapeutic compounds. Cryptococcus neoformans is a pathogenic fungus that causes deep mycosis, resulting in respiratory illness and meningitis. Here we describe a silkworm system established to evaluate the safety and efficacy of therapeutic drugs against infection by Cryptococcus neoformans and the advantages of this system over other animal models. The silkworm assay system has two major advantages: 1) silkworms are less expensive to rear and their use is less problematic than that of mammals in terms of animal welfare, and 2) in vivo screenings for identifying candidate drugs can be easily performed using a large number of silkworms...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/29181205/basidiobolomycosis-simulating-a-mycobacterium-ulcerans-infection-in-a-togolese-rural-child
#6
Bayaki Saka, Waguena Gnassingbe, Garba Mahamadou, Sefako Akakpo, Julienne Teclessou, Aurel Abilogun-Chokki, Abas Mouhari-Toure, Koussake Kombate, Palokinam Pitché
Background: Basidiobolomycosis is a deep mycosis which preferentially affects rural young people in tropical countries. We report an atypical case, with multiple ulcers, simulating a Buruli ulcer. Case Report: A 5-year-old boy, living in a rural area, was seen for ulcers on the buttocks and at the back and right flank that had been in progress for 4 months. On examination, we found an infiltrated plaque with sharp edges, little painful, located on the buttocks, back, and the right flank...
2017: Case Reports in Dermatological Medicine
https://www.readbyqxmd.com/read/29128259/role-of-dysregulated-cytokine-signaling-and-bacterial-triggers-in-the-pathogenesis-of-cutaneous-t-cell-lymphoma
#7
Melania H Fanok, Amy Sun, Laura K Fogli, Vijay Narendran, Miriam Eckstein, Kasthuri Kannan, Igor Dolgalev, Charalampos Lazaris, Adriana Heguy, Mary E Laird, Mark S Sundrud, Cynthia Liu, Jeff Kutok, Rodrigo S Lacruz, Jo-Ann Latkowski, Iannis Aifantis, Niels Ødum, Kenneth B Hymes, Swati Goel, Sergei B Koralov
Cutaneous T-cell lymphoma is a heterogeneous group of lymphomas characterized by the accumulation of malignant T cells in the skin. The molecular and cellular etiology of this malignancy remains enigmatic, and what role antigenic stimulation plays in the initiation and/or progression of the disease remains to be elucidated. Deep sequencing of the tumor genome showed a highly heterogeneous landscape of genetic perturbations, and transcriptome analysis of transformed T cells further highlighted the heterogeneity of this disease...
May 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29082569/deep-facial-mycosis-due-to-trichophyton-verrucosum-molecular-genetic-identification-of-the-dermatophyte-in-paraffin-embedded-tissue-case-report-and-review-of-the-literature
#8
REVIEW
Uwe Wollina, Gesine Hansel, Silke Uhrlaß, Constanze Krüger, Jacqueline Schönlebe, Uta-Christina Hipler, Pietro Nenoff
Deep trichophytosis is relatively uncommon. The infection of the bearded area is also known as sycosis barbae or tinea barbae and can be caused by various fungal species, most often zoophilic fungi. We report on an 80-year-old male patient with severe sycosis barbae who had no animal contact and was treated with systemic antibiosis without improvement. Microbial and mycological investigations using swabs from oozing lesions revealed Staphylococcus haemolyticus and Candida parapsilosis. Histology demonstrated fungal elements in hair follicles...
March 2018: Mycoses
https://www.readbyqxmd.com/read/29033820/pachyderma-in-primary-cutaneous-nk-and-t-cell-lymphoma-and-leukemia-cutis
#9
Eve Lebas, Cesar Chian, Nazli Nikkels-Tassoudji, Jorge E Arrese, Arjen F Nikkels
BACKGROUND: Pachyderma is defined as severely thickened skin with deep folds and is occasionally observed with primary cutaneous NK and T-cell lymphoma (pCNKTCL), primary cutaneous B-cell lymphoma (pCBCL), and leukemia cutis (LC). AIM: To describe the clinical, histological, and therapeutic particularities of a series of pCNKTCL, pCBCL, and LC patients with pachyderma. RESULTS: In a series of pCNKTCL ( n = 70), pCBCL ( n = 12), and LC ( n = 2) patients followed up during 9 years, 6 cases of pachyderma were observed...
September 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28855485/potential-of-next-generation-poct-in-infectious-disease-rapid-test
#10
REVIEW
Naoto Shimetani
Real-time test results are necessary for early diagnosis and in determining treatment orientation in medical practice. Point of Care Testing (POCT) is a testing system that provides beneficial and helpful information for diagnosis and treatment through real-time testing at the bedside. Therefore, POCT has high utility value in the field of infectious diseases as a rapid test that provides, within the consultation hours, useful information for initial treatment.Infectious disease rapid test kits are commercially available for a wide variety of prophlogistic pathogen targets, including bacterial, viral, fungal, protozoal, and other disease agents...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/28720727/impact-of-paracoccin-gene-silencing-on-paracoccidioides-brasiliensis-virulence
#11
Fabrício F Fernandes, Aline F Oliveira, Taise N Landgraf, Cristina Cunha, Agostinho Carvalho, Patrícia E Vendruscolo, Relber A Gonçales, Fausto Almeida, Thiago A da Silva, Fernando Rodrigues, Maria Cristina Roque-Barreira
Among the endemic deep mycoses in Latin America, paracoccidioidomycosis (PCM), caused by thermodimorphic fungi of the Paracoccidioides genus, is a major cause of morbidity. Disease development and its manifestations are associated with both host and fungal factors. Concerning the latter, several recent studies have employed the methodology of gene modulation in P. brasiliensis using antisense RNA (AsRNA) and Agrobacterium tumefaciens-mediated transformation (ATMT) to identify proteins that influence fungus virulence...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28600728/the-critical-role-of-notch1-tlr-4-signaling-in-the-inflammatory-and-fungicidal-activity-of-macrophages-against-paracoccidioides-brasiliensis-strain-pb18
#12
Lavínia Maria Dal'Mas Romera, Gilberto Hideo Kaihami, Grasielle Pereira Jannuzzi, José Roberto Fogaça de Almeida, Sandro Rogério de Almeida
Paracoccidioidomycosis is a systemic mycosis of deep nature that primarily affects the lung and can spread via lymphatic and hematogenous to other organs and tissues. It is mainly caused by Paracoccidioides brasiliensis fungus which exhibits thermal dimorphism. The innate immune system mediated by macrophages is extremely important for the control of infection and is involved in the induction and regulation of immune/inflammatory response. These cells are able to recognize pathogens through pattern recognition receptors (PRRs) such as Toll-like receptors (TLR)...
October 2017: Mycopathologia
https://www.readbyqxmd.com/read/28526427/atypical-presentations-of-cutaneous-leishmaniasis-a-systematic-review
#13
REVIEW
Camilla Barros Meireles, Laís Chaves Maia, Gustavo Coelho Soares, Ilara Parente Pinheiro Teodoro, Maria do Socorro Vieira Gadelha, Cláudio Gleidiston Lima da Silva, Marcos Antonio Pereira de Lima
Cutaneous Leishmaniasis (CL) is endemic in 88 countries, showing relevant prevalences. The aim of this study was to perform a systematic review on atypical lesions of CL around the world, addressing clinico-epidemiological, immunological and therapeutic aspects. A search of the literature was conducted via electronic databases Scopus and PubMed for articles published between 2010 and 2015. The search terms browsed were "cutaneous leishmaniasis", "atypical" and "unusual". Based on the eligibility criteria, 34 out of 122 articles were included in the final sample...
August 2017: Acta Tropica
https://www.readbyqxmd.com/read/28004227/trichophyton-rubrum-infection-characterized-by-majocchi-s-granuloma-and-deeper-dermatophytosis-case-report-and-review-of-published-literature
#14
REVIEW
Huilin Su, Li Li, Benlin Cheng, Junhao Zhu, Qiangqiang Zhang, Jinhua Xu, Min Zhu
Infections caused by Trichophyton rubrum are very common in dermatological disease. It most often appears as superficial cutaneous mycosis, such as tinea manuum, tinea pedis, and tinea corporis. However, deep infection caused by T. rubrum was rarely reported. We describe a case of mixed type of deep infection caused by T. rubrum in a 45-year-old man with no significant immunodeficiency. This patient had a history of onychomycosis on the toenails without regular treatment for nearly 6 years. And, he had erythema, papule, and nodules on the submandibular area, neck, and chest for almost 1 year...
June 2017: Mycopathologia
https://www.readbyqxmd.com/read/27904060/causative-agents-of-aspergillosis-including-cryptic-aspergillus-species-and-a-fumigatus
#15
REVIEW
Takahito Toyotome
Aspergillosis is an important deep mycosis. The causative agents are Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger, and Aspergillus terreus, of which A. fumigatus is the most prevalent. Cryptic Aspergillus spp., which morphologically resemble representative species of each Aspergillus section, also cause aspergillosis. Most of the cryptic species reveal different susceptibility patterns and/or different secondary metabolite profiles, also called exometabolome in this manuscript, from those representative species...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27904053/executive-summary-of-japanese-domestic-guidelines-for-management-of-deep-seated-mycosis-2014
#16
REVIEW
Shigeru Kohno, Kazuo Tamura, Yoshihito Niki, Koichi Izumikawa, Shinichi Oka, Kenji Ogawa, Junichi Kadota, Katsuhiko Kamei, Yoshinobu Kanda, Tetsuya Kiuchi, Kazutoshi Shibuya, Syunji Takakura, Toru Takata, Yoshio Takesue, Katsuji Teruya, Issei Tokimatsu, Takahiro Fukuda, Shigefumi Maesaki, Koichi Makimura, Hiroshige Mikamo, Kotaro Mitsutake, Yoshitsugu Miyazaki, Masaaki Mori, Akira Yasuoka, Keiko Yano, Noboru Yamanaka, Minoru Yoshida
No abstract text is available yet for this article.
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27704050/genome-diversity-recombination-and-virulence-across-the-major-lineages-of-paracoccidioides
#17
José F Muñoz, Rhys A Farrer, Christopher A Desjardins, Juan E Gallo, Sean Sykes, Sharadha Sakthikumar, Elizabeth Misas, Emily A Whiston, Eduardo Bagagli, Celia M A Soares, Marcus de M Teixeira, John W Taylor, Oliver K Clay, Juan G McEwen, Christina A Cuomo
The Paracoccidioides genus includes two species of thermally dimorphic fungi that cause paracoccidioidomycosis, a neglected health-threatening human systemic mycosis endemic to Latin America. To examine the genome evolution and the diversity of Paracoccidioides spp., we conducted whole-genome sequencing of 31 isolates representing the phylogenetic, geographic, and ecological breadth of the genus. These samples included clinical, environmental and laboratory reference strains of the S1, PS2, PS3, and PS4 lineages of P...
September 2016: MSphere
https://www.readbyqxmd.com/read/27248851/worldwide-phylogenetic-distributions-and-population-dynamics-of-the-genus-histoplasma
#18
Marcus de M Teixeira, José S L Patané, Maria L Taylor, Beatriz L Gómez, Raquel C Theodoro, Sybren de Hoog, David M Engelthaler, Rosely M Zancopé-Oliveira, Maria S S Felipe, Bridget M Barker
BACKGROUND: Histoplasma capsulatum comprises a worldwide complex of saprobiotic fungi mainly found in nitrogen/phosphate (often bird guano) enriched soils. The microconidia of Histoplasma species may be inhaled by mammalian hosts, and is followed by a rapid conversion to yeast that can persist in host tissues causing histoplasmosis, a deep pulmonary/systemic mycosis. Histoplasma capsulatum sensu lato is a complex of at least eight clades geographically distributed as follows: Australia, Netherlands, Eurasia, North American classes 1 and 2 (NAm 1 and NAm 2), Latin American groups A and B (LAm A and LAm B) and Africa...
June 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27237547/new-clinical-phenotypes-of-fungal-infections-in-special-hosts
#19
REVIEW
B Pilmis, A Puel, O Lortholary, F Lanternier
Incidence of invasive fungal infections increases over time with the rise in at-risk populations; in particular, patients with acquired immunodeficiencies due to immunosuppressive therapies such as anti-tumour necrosis factor-α (TNF-α) treatment, cirrhosis or burns. Some primary immunodeficiencies (PID) can also predispose selectively to invasive fungal diseases. Conversely, some atypical fungal diseases can reveal new PID. Deep dermatophytosis, Candida central nervous system infections or gastrointestinal disease, or disseminated phaeohyphomycosis-revealed CARD9 deficiency...
August 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27193294/subcutaneous-phaeohyphomycosis-cyst-associated-with-medicopsis-romeroi-in-an-immunocompromised-host
#20
Alireza Abdolrasouli, Ximena Gonzalo, Anita Jatan, Gordon J McArthur, Nicholas Francis, Berge S Azadian, Andrew M Borman, Elizabeth M Johnson
An 88-year-old man, receiving prednisolone for sarcoidosis, presented with a discrete keratotic lesion on the dorsum of his right hand following the placement of an intravenous cannula a month prior to its appearance. Medicopsis romeroi was isolated from the tissue and identified by sequencing the internal transcribed spacer region ITS-1 and the D1-2 fragment of the 28S rDNA gene. Histopathological examination showed fungal hyphae in the internal inflammatory cells layer and within the histocyte-macrophage layer, highly suggestive of deep mycosis...
October 2016: Mycopathologia
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