Climate Change and Global Distribution of Cryptococcosis

Paredes, Edith Sánchez; León, Yurixhi Paola Aguilera; Alvarado-Ramírez, Eidi; Olivares, Laura Rosío Castañón; Aguilar, Magnolia Lizbeth Martínez

doi:10.1007/978-3-030-89664-5_11

Cited by 1 publication

(2 citation statements)

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“…Of these, VGI and VGII infect immunocompetent individuals and VGIII and VGIV infect immunocompromised ones [7][8][9]. Cases are seen worldwide but are more prominent in sub-tropical regions, such as India, South America, Australia, and Papua New Guinea, and HIV-prevalent regions, such as Sub-Sharan Africa [10,11] Recently, there has been an increase in reported cases of C. neoformans and C. gattii in more temperate places, such as the United States, Europe, and Canada [12,13]. To date, C. gattii has been found in six continents and approximately 41 countries [11].…”

Section: Introductionmentioning

confidence: 99%

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Cryptococcus gattii Can Use the Cactus Pilosocereus spp. to Grow and Develop a Capsule and Produce Melanin In Vitro

Ramos-Irizarry,

Sánchez,

Loperena-Álvarez

2023

Microbiology Research

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Cryptococcus gattii is a pathogenic yeast, member of the C. neoformans/gattii complex. Previous work from our laboratory has established the presence of C. gattii on cacti lesions, providing proof that it can grow in a stressful environment. However, it is not known which part of the cactus the yeast uses for nutrients. The purpose of this research is to determine the ability of C. gattii to grow in different parts of the cactus to assess how the yeast adapts to grow in this unique environment. Cactus media were developed using the outer, inner, and whole cactus from Pilosocereus spp. Cryptcoccus gattii was grown on the different cactus media, along with potato dextrose agar as a control for 24 and 48 h at 30 °C. Compared to the control medium, yeast growth was reduced in all cactus media, while an increase in the capsule development of the yeast grown in the inner part and the whole-cactus media was observed. Interestingly, the yeast produces melanin when grown in the outer membrane medium, which was dependent on laccase, suggesting that the outer membrane may contain a precursor that stimulatates pigment production. To our knowledge, this is the first study addressing these key differences in the growth of C. gattii on different parts of the cactus.

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Section: Introductionmentioning

confidence: 99%

“…This area is abundant in olive and eucalyptus trees; the latter is a known reservoir for this pathogen and the former is new. Although trees and soil have been established as the main reservoirs of this pathogen, the yeast ecological diversity begs the question as to how limiting it is to exclusively sample these niches [12,13].…”

Section: Introductionmentioning

confidence: 99%