Abstract

ROJAS, María del Carmen; VAZQUEZ, Pablo Mauricio  and  COSTAMAGNA, Sixto Raúl. Cultivo de Acanthamoeba spp. en agua apirógena. Acta bioquím. clín. latinoam. [online]. 2023, vol.57, n.3, pp.303-307. ISSN 0325-2957.

The objective of this study was to evaluate the culture of strains of Acanthamoeba spp. in sterile apyrogenic distilled water for pharmaceutical use. Two T4 genotype strains [one isolate of granulomatous amebic encephalitis (GAE) and one environmental], a T5 and T15 genotype strains were used. The cysts of each of the strains were seeded in Petri dishes with non-nutritive agar with different solutions (pyrogenic sterile distilled water for medical use for injectable preparations, filtered distilled water, Page medium) and combined with Escherichia coli suspensions. Plates were incubated at 37 °C and monitored daily for 15 days for the detection of trophozoites. Growth was assessed by direct microscopic examination. Each medium culture counted four replicates for each of the strains (n=96). Concluding, statistically significant differences were found in the growth of the strains per day. Strains T5 and T4 (granulomatous amebic encephalitis) developed a greater number of trophozoites on the first day compared to strain T15 (H=16.42; p=0.001). In apyrogenic water with E. coli, a growth equal to Page’s solution with E. coli was obtained (H=24.64; p=0.0001). No statistically significant differences were found in the amount of trophozoites obtained in apyrogenic water with E. coli and Page’s solution with E. coli in strain T4 (GAE) (U=4; p<0.05), but significant differences were found in the environmental T4 strain (U=0; p<0.05).

Keywords : Acanthamoeba spp; Culture; Sterile apyrogenic distilled water.

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