Resumen

BARRIOS, Emilia et al. Maintenance and transport Blastocystis sp in conditions of vitality. Salus [online]. 2013, vol.17, suppl.1, pp.29-38. ISSN 1316-7138.

The protozoan Blastocystis sp is a high prevalence in Venezuela. Its role is controversial pathogen and its wide genetic variability related to the difficulty of keeping it in a position outside the host viability. We evaluated the utility of in vitro culture media RPMI1640, TB1, and MBDM MBD to maintain the vitality of Blastocystis sp. They selected 97 stool samples, 43 (44%) of which were positive for Blastocystis sp and only 15 of them were purified by gradient Blastocystis sp (ficoll-sodium diatrizaoato). In each culture medium and 0.85% saline (SSI) is inoculó1x103 parasites per patient and viability was assessed by trypan blue staining after 24, 48 and 72 hours. The results showed viability percentage at 24 hours: in SSI of 2%, 5% RPMI1640 at TB1 5%, 24% and MBDM MBD 40%. After 48 h: SSI 3% in RPMI1640 4%, 4% TB1, MBD MBDM 17% and 21%. After 72 h: SSI 2% in RPMI1640 2%, 2% TB1, MBD 15% and 16% MBDM. Statistically significant differences were observed after 24 h, between TB1 media, compared MBDM MBD and SSI. We conclude that the medium is MBDM which offers the best conditions for maintaining viable Blastocystis sp for 72 h.

Palabras clave : Blastocystis sp; in vitro culture; the concentration gradient.

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