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© Christine Schmitt, Sophie Goyard, Jean-Marc Panaud
Trypanosoma vivax - forme sanguine. Responsable de la trypanosomose animale ou Nagana.
Publication : Frontiers in cellular and infection microbiology

The Cyclical Development of Trypanosoma vivax in the Tsetse Fly Involves an Asymmetric Division

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Frontiers in cellular and infection microbiology - 28 Sep 2016

Ooi CP, Schuster S, Cren-Travaillé C, Bertiaux E, Cosson A, Goyard S, Perrot S, Rotureau B

Link to Pubmed [PMID] – 27734008

Front Cell Infect Microbiol 2016;6:115

Trypanosoma vivax is the most prevalent trypanosome species in African cattle. It is thought to be transmitted by tsetse flies after cyclical development restricted to the vector mouthparts. Here, we investigated the kinetics of T. vivax development in Glossina morsitans morsitans by serial dissections over 1 week to reveal differentiation and proliferation stages. After 3 days, stable numbers of attached epimastigotes were seen proliferating by symmetric division in the cibarium and proboscis, consistent with colonization and maintenance of a parasite population for the remaining lifespan of the tsetse fly. Strikingly, some asymmetrically dividing cells were also observed in proportions compatible with a continuous production of pre- metacyclic trypomastigotes. The involvement of this asymmetric division in T. vivax metacyclogenesis is discussed and compared to other trypanosomatids.

http://www.ncbi.nlm.nih.gov/pubmed/27734008