Effect of the combinatorial iron-chelation and oxidative stress on the growth of Aspergillus species.

Effect of the combinatorial iron-chelation and oxidative stress on the growth of Aspergillus species.

Author:

Emri T, Sümegi-Győri VM, Páll K, Gila BC, Pócsi I.

Date: 19 July 2022

Abstract:

The growth of 14 Aspergillus strains belonging to nine species was studied under combinatorial deferriprone – H2O2 (iron-chelation – oxidative) stress. When deferriprone pretreated mycelia were subjected to even a weak oxidative stress, the growth inhibitory effect of iron-chelation stress was enhanced in 10 out of 14 strains. In contrast, oxidative stress pretreatment of conidia increased their deferriprone tolerance in 10 strains. Applying iron-chelators as antifungal agent or adjuvant can enhance the efficiency of the combinatorial iron withdrawal – oxidative stress strategy of our immune system and may reduce the survival of conidia escaped from the oxidative attack of pulmonary macrophages.

Keywords: Aspergilli; Aspergillus fumigatus; Combinatorial stress; Deferriprone.

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