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Synchronized erythrocytic schizogony and gametocytogenesis of Plasmodium berghei in vivo and in vitro

Published online by Cambridge University Press:  06 April 2009

B. Mons ,
C.J. Janse ,
E. G. Boorsma  and
H. J. Van Der Kaay
B. Mons
Affiliation:
Laboratory of Parasitology (Medical Faculty), State University of Leiden, Wassenaarseweg 62, 2333 Al Leiden, The Netherlands
C.J. Janse
Affiliation:
Laboratory of Parasitology (Medical Faculty), State University of Leiden, Wassenaarseweg 62, 2333 Al Leiden, The Netherlands
E. G. Boorsma
Affiliation:
Laboratory of Parasitology (Medical Faculty), State University of Leiden, Wassenaarseweg 62, 2333 Al Leiden, The Netherlands
H. J. Van Der Kaay
Affiliation:
Laboratory of Parasitology (Medical Faculty), State University of Leiden, Wassenaarseweg 62, 2333 Al Leiden, The Netherlands
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Summary

Both asexual and sexual development of Plasmodium berghei was synchronized without chemical intervention using in vitro culture techniques. Combined in vivo and in vitro experiments were performed on the relationship between age, morphology and maturity of gametocytes. Schizogony took 22–23 h in the experiments. At 26 h post-invasion (p.i) the first males became capable of exflagellation. By 20 h p.i. the first gametocytes were recognizable in Giemsa-stained smears but the sex was hardly distinguishable until maturity (26 h p.i.). Survival time of gametocytes was estimated at 26 h in vitro (half-life 13 h) and the same survival time was suggested for gametocytes in vivo. Schizonts of P. berghei apparently disappeared from the peripheral circulation upon maturity, rupturing almost immediately. Mature schizonts in vitro persisted up to 48 h p.i. in non-agitated cultures. No evidence was collected for sequestration of any sub-population of gametocytes.

Type
Research Article
Information
Parasitology , Volume 91 , Issue 3 , December 1985 , pp. 423 - 430
Copyright
Copyright © Cambridge University Press 1985

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References

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