Lack of relationship between genotype and virulence in Candida species

IF 1.5 4区生物学 Q4 MYCOLOGY Revista Iberoamericana De Micologia Pub Date : 2021-01-01 DOI:10.1016/j.riam.2020.10.002

Judith Díaz-García , Maiken C. Arendrup , Rafael Cantón , Julio García-Rodríguez , Elia Gómez García de la Pedrosa , Gabriella Parisi , Javier Pemán , Brunella Posteraro , Maurizio Sanguinetti , Daniel Archimedes Da Matta , Arnaldo L. Colombo , Patricia Muñoz , Carlos Sánchez-Carrillo , Jesús Guinea , Pilar Escribano

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Abstract

Background

The virulence of isolates among different Candida species causing candidemia may play a role in the prognosis of the patients. Furthermore, the potential relationship between genotype and virulence is still unclear and need to be further studied.

Aims

We aim to assess the relationship between genotype and virulence in Candida species using a Galleria mellonella larvae infection model.

Methods

One hundred and ninety-four isolates from 68 clusters (Candida albicans, 114/41; Candida parapsilosis, 74/24; Candida tropicalis, 6/3) were compared against the same number of each species singleton genotypes in terms of survival of G. mellonella larvae.

Results

The median of survival and the IQR ranges of clusters and singleton were as follows: C. albicans (2 days, IQR 1.5–2 vs. 2 days, IQR 1–2.25), C. parapsilosis (2 days, IQR 1.5–2.6 vs. 2 days, IQR 2–3.3), and C. tropicalis (1 day, IQR 1–3.5 vs. 2 days, IQR 2–3.5; p < 0.05). High intra-cluster variability in terms of median of survival was found regardless the species.

Conclusions

No relationship between genotype and virulence in Candida was observed with the G. mellonella model.

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念珠菌的基因型与毒力之间缺乏相关性

背景:不同念珠菌种类引起念珠菌病的分离株的毒力可能影响患者的预后。此外，基因型与毒力之间的潜在关系尚不清楚，需要进一步研究。目的通过建立成熟Galleria mellonella幼虫感染模型，研究念珠菌的基因型与毒力之间的关系。方法从68个菌群中分离194株(白色念珠菌114/41;假丝酵母菌，74/24;将热带假丝酵母(6/3)与相同数量的单基因型菌株进行比较。结果聚集性和单例病例的生存中位数和IQR范围分别为:白色念珠菌(2天，IQR 1.5-2比2天，IQR 1 - 2.25)，傍肺念珠菌(2天，IQR 1.5-2.6比2天，IQR 2 - 3.3)，热带念珠菌(1天，IQR 1 - 3.5比2天，IQR 2 - 3.5;p & lt;0.05)。无论物种如何，在生存中位数方面都发现了高簇内变异性。结论假丝酵母基因型与毒力之间无相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Iberoamericana De Micologia MYCOLOGY-

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

81 days

期刊介绍： Revista Iberoamericana de Micología (Ibero-American Journal of Mycology) is the official journal of the Asociación Española de Micología, Asociación Venezolana de Micología and Asociación Argentina de Micología (The Spanish, Venezuelan, and Argentinian Mycology Associations). The Journal gives priority to publishing articles on studies associated with fungi and their pathogenic action on humans and animals, as well as any scientific studies on any aspect of mycology. The Journal also publishes, in Spanish and in English, original articles, reviews, mycology forums, editorials, special articles, notes, and letters to the editor, that have previously gone through a scientific peer review process.