Lipids shed into the culture medium by trypomastigotes of Trypanosoma cruzi.

AGUSTI, R.; COUTO, A.S.; ALVES, M.J.; COLLI, W.; LEDERKREMER, R.M.

MEMóRIAS DO INSTITUTO OSWALDO CRUZ.

Fundacion Oswaldo Cruz

Lugar: Rio de Janeiro; Año: 2000 vol. 95 p. 97 - 102

0074-0276

Trypomastigote forms of Trypanosoma cruzi were metabolically labeled with [14C]-ethanolamine and [3H]-palmitic acid. Lipids shed to the culture medium were analyzed and compared with the parasite components. Phosphatidylcholine and lysophosphatidylcholine accounted for 53% of the total incorporated precursor. Interestingly, phosphatidylethanolamine and its lyso derivative lysophosphatidylethanolamine, although present in significant amounts in the parasites, could not be detected in the shed material. Shed lipids were highly enriched in the desaturated fatty acids C16:1 and C18:1 when compared to the total fatty acid pool isolated from the parasites.