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Human hyalohyphomycoses: A review of human infections due to Acremonium spp., Paecilomyces spp., Penicillium spp., Talaromyces spp., and Scopulariopsis spp.
Published in Mahmoud A. Ghannoum, John R. Perfect, Antifungal Therapy, 2019
Microscopically P. variotii complex form fast-growing yellowish-brown, buff or orange colonies. Conidiophores bear verticillately arranged branches bearing phialides, which are swollen at the base and terminate in long tapering necks. Conidia are single celled and occur in chains. Chlamydospores are usually present [3]. P. variotii is thermophilic and can grow well at high temperatures while P. marquandii fails to grow at 37°C. On the other hand, Purpureocillium exhibits slower growth than Paecilomyces. Conidia are lilac colored (Figure 20.3) and chlamydospores are absent [3] (Figure 20.4).
Antifungal Activity of Seaweeds and their Extracts
Published in Leonel Pereira, Therapeutic and Nutritional Uses of Algae, 2018
It is characterized from white to grey, rapidly growing colonies, producing erect, straight, branching sporangiophores. These sporangiophores end in globose or pyriform-shaped vesicles from which several one-celled, globose to ovoid, echinulate or smooth-walled sporangiola develop on swollen denticles. Chlamydospores and zygospores may also be present. The genus now contains seven species with C. bertholletiae—the only known species to cause disease in humans and animals, often in association with trauma and immunosuppression (Ellis 2016t).
Oral mycobiome identification in atopic dermatitis, leukemia, and HIV patients – a systematic review
Published in Journal of Oral Microbiology, 2020
Camila Stofella Sodré, Paulo Matheus Guerra Rodrigues, Mayra Stambovsky Vieira, Alexandre Marques Paes da Silva, Lucio Souza Gonçalves, Marcia Gonçalves Ribeiro, Dennis de Carvalho Ferreira
Countless techniques are still used as a standard in the identification of fungi among the microscopic aspects. Tests of selective medium, germ tube test, hyphae production and specific medium for the production of chlamydospores are examples of morphological methods. De Mendonça et al. [62], Dos Santos Abrantes et al. [54] and De Mendonça et al. [61] were the three works that only used morphological identification methods. De Mendonça et al. [62] and De Mendonça et al. [61] performed microbiological culture tests to identify Candida species present in ALL patients, but did not distinguish between species. The focus of Dos Santos Abrantes et al. [54] was to identify Candida species present in HIV-infected patients with oral candidiasis so they used methods for morphological identification through the chromogenic medium followed by gram stain and germ tube test in order to distinguish C. albicans from C. dubliniensis.
Colovesicular fistula from Candida dubliniensis in an immunocompetent resulting in poor outcome
Published in Journal of Community Hospital Internal Medicine Perspectives, 2020
Christine Rizkalla, Jillian Ottombrino, Fahad Malik
Candida albicans is historically known to be the most prevalent and pathogenic of the species however, new evidence shows a decline in the incidence of C. albicans infection, with a shift towards the emergence of Candida dubliniensis. C. dubliniensis is distributed worldwide and is primarily pathogenic in diseases of the oral cavity [2]. Candida dubliniensis was first described as a novel species in 1995 [3]. It is a chlamydospore and germ tube positive yeast which has recently been primarily exhibited in the oral cavities of HIV/AIDS patients.