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Phoenix666 [soylentnews.org] writes:

While scientists have known for years that African trypanosomes cause sleeping sickness, they've been left scratching their heads as to how these tiny single-celled organisms communicate. A University of Georgia study, published Jan. 14 in the journal Cell, helps solve this mystery [sciencedaily.com].

The UGA researchers discovered that long filaments -- that look like beads on a string -- form by budding from the flagellum of African trypanosomes and then release pieces of the parasite into the host. This causes anemia and influences the outcome of infection leading to human African sleeping sickness and the cattle disease nagana.

The UGA researchers theorize that the extracellular vesicles, as the free-floating beads are scientifically known, are being used by the parasite to communicate with each other and with the host's body. Even before they pop off into vesicles, the nanotubes extending from the flagellum help the single-celled parasites talk to each other. The severe anemia caused by the parasites may be an accidental side effect of the extracellular vesicles fusing with host red blood cells.

Original Submission