Cryptococcus spp. isolation from excreta of pigeons (Columba livia) in and around Monterrey, Mexico

Canónico-González, Yolanda; Adame-Rodríguez, Juan Manuel; Mercado-Hernández, Roberto; Aréchiga-Carvajal, Elva Teresa

doi:10.1186/2193-1801-2-632

Cited by 9 publications

(8 citation statements)

References 16 publications

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“…Other species of Cryptococcus are considered potentially pathogenic, such as C. laurentii (currently Papiliotrema laurentii), C. albidus (currently Naganishia albida), and C. flavescens (currently P. flavescens), which have been reported in some studies [6,7,17,18,19]. These species are also isolated from the environment in organic matter, such as tree debris and bird excreta [7,17,19].…”

Section: Introductionmentioning

confidence: 99%

Isolation of Cryptococcus species from the external environments of hospital and academic areas

Brito

Bessa

Menezes

et al. 2019

J Infect Dev Ctries

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Introduction: Fungi of the genus Cryptococcus are cosmopolitan and may be agents of opportunistic mycoses in immunocompromised and sometimes immunocompetent individuals. Cryptococcus species are frequently isolated from trees and bird excreta in the environment and infection occurs by inhalation of propagules dispersed in the air. The aim was to investigate Cryptococcus species in bird excreta and tree hollows located in a university hospital area and in an academic area of a university campus. Methodology: A total of 40 samples of bird excreta and 41 samples of tree hollows were collected. The identification of the isolates was done by classical methodology and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Results: Twenty (62.5%) isolates of Cryptococcus were found in bird excreta and 12 (37.5%) in tree hollows. C. laurentii (currently Papiliotrema laurentii) was the most frequent species in both samples, being found in 5 samples of excreta and in 8 tree hollows. The diversity of species found in excreta (C. laurentii, C. albidus [currently Naganishia albida], C. liquefaciens [currently N. liquefaciens], C. friedmanii [currently N. friedmannii] and others) was higher than in tree hollows (C. laurentii, C. flavescens [currently Papiliotrema flavescens], and other yeasts). Conclusion: Many Cryptococcus species were isolated from excreta and tree hollows, and this fact is important for understanding the environmental epidemiology of those emerging pathogens for public health, as a way to implement surveillance actions and control of cryptococcosis.

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Section: Introductionmentioning

confidence: 99%

Isolation of Cryptococcus species from the external environments of hospital and academic areas

Brito

Bessa

Menezes

et al. 2019

J Infect Dev Ctries

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“…Data from Bolivia, Costa Rica, Dominican Republic, El Salvador, Haiti, Nicaragua, and Panama about the molecular typing of cryptococcal strains has not been reported. a : C. neoformans has been mostly recovered from avian droppings, decaying organic matter, and soil ( Casali et al 2003 , Ribeiro et al 2006 , Lugarini et al 2008 , Ribeiro and Ngamskulrungroj 2008 , Andrade-Silva et al 2010 , Illnait-Zaragozi et al 2010a , Souza et al 2010 , Ferreira-Paim et al 2011 , Canónico-González et al 2013 , Castro e Silva et al 2016 ). C. gattii is associated with several tree species ( Escandón et al 2006 , Trilles et al 2008 , Costa et al 2009 , Refojo et al 2009 , Escandón et al 2010 , Firacative et al 2011 , Mazza et al 2013 , Anzai et al 2014 , Cattana et al 2014 , Brito-Santos et al 2015 , Vélez and Escandón 2017 ).…”

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confidence: 99%

The status of cryptococcosis in Latin America

Firacative

Lizarazo

Illnait-Zaragozí

et al. 2018

Mem. Inst. Oswaldo Cruz

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Cryptococcosis is a life-threatening fungal infection caused by the encapsulated yeasts Cryptococcus neoformans and C. gattii, acquired from the environment. In Latin America, as occurring worldwide, C. neoformans causes more than 90% of the cases of cryptococcosis, affecting predominantly patients with HIV, while C. gattii generally affects otherwise healthy individuals. In this region, cryptococcal meningitis is the most common presentation, with amphotericin B and fluconazole being the antifungal drugs of choice. Avian droppings are the predominant environmental reservoir of C. neoformans, while C. gattii is associated with several arboreal species. Importantly, C. gattii has a high prevalence in Latin America and has been proposed to be the likely origin of some C. gattii populations in North America. Thus, in the recent years, significant progress has been made with the study of the basic biology and laboratory identification of cryptococcal strains, in understanding their ecology, population genetics, host-pathogen interactions, and the clinical epidemiology of this important mycosis in Latin America.

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“…In our region, one study has reported the isolation of C. neoformans var. grubii and C. albidus, but only pigeon's excreta were sampled (Canónico-González et al 2013). In Mexico City, there was one report of C. gattii isolation in a sample from Eucalyptus camaldulensis (Arguero Licea and Cervantes Olivares 1999).…”

Section: Discussionmentioning

confidence: 99%

“…This region has a dry, hot climate with summer temperatures ranging from 35 to 40°C, which could be considered as not suitable for environmental spread of Cryptococcus spp. (Canónico-González et al 2013). Thus, the aims of this study were to determine the prevalence of the molecular types of C. neoformans/C.…”

Section: Introductionmentioning

confidence: 93%

Molecular typing of clinical isolates of Cryptococcus neoformans/Cryptococcus gattii species complex from Northeast Mexico

et al. 2015

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Cryptococcosis is caused by members of the Cryptococcus neoformans/Cryptococcus gattii species complex. Based on molecular identification, these two species have been further differentiated into molecular types. The aim of this work was to characterize clinical cryptococcal isolates recovered from six hospitals in Northeast Mexico from 1995 to 2011. One hundred and sixty-six isolates, which were characterized by biochemical tests and in vitro susceptibility to amphotericin B, fluconazole, and voriconazole, and M13 PCR fingerprinting, were included in this study. Utilizing phenotypic tests, 153 isolates (92.16 %) were identified as C. neoformans and 13 (7.83 %) as C. gattii. All isolates were susceptible to all antifungals tested. Employing M13 PCR fingerprinting, eight molecular types were detected. VNI was the most common genotype (124 cases; 74.6 %), followed by VNII (15 cases; 9 %), VNIII (8 cases; 4.8 %), VNIV (6 cases; 3.6 %), VGI (6 cases; 3.6 %), VGII (3 cases; 1.8 %), and VGIII and VGIV (2 cases, 1.2 % each). We confirm the presence of C. gattii in clinical isolates in Northeast Mexico, and a high clonal diversity in the studied strains of C. neoformans/C. gattii species complex.

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Cryptococcus spp. isolation from excreta of pigeons (Columba livia) in and around Monterrey, Mexico

Cited by 9 publications

References 16 publications

Isolation of Cryptococcus species from the external environments of hospital and academic areas

Isolation of Cryptococcus species from the external environments of hospital and academic areas

The status of cryptococcosis in Latin America

Molecular typing of clinical isolates of Cryptococcus neoformans/Cryptococcus gattii species complex from Northeast Mexico

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