Mechanisms of microsporidial cell division: Ultrastructural study on Encephalitozoon hellem

Elisa Bigliardi, Maria Giovanna Riparbelli, Maria Gloria Selmi, Paolo Lanzarini, Silvia Corona, Simonetta Gatti, Massimo Scaglia, Luciano Sacchi

Research output: Contribution to journalArticlepeer-review


The mitotic process in microsporidian Encephalitozoon hellem, a known human pathogen, has been studied with tile aim of elucidating some ultrastructural aspects of its nuclear division. The presence of a nuclear spindle, of 'electrondense spindle plaques' associated with the nuclear envelope and of cytoplasmic double walled vesicles are reported. We suggest that these 'electrondense spindle plaques' serve as loci for intranuclear and cytoplasmic microtubule arrangements, similar to the microtubule organizing centers within the centrosomes of animal cells. The extent to which the microsporidial division process is comparable with that of more familiar eukaryotes such as yeast cells is discussed.

Original languageEnglish
Pages (from-to)347-351
Number of pages5
JournalJournal of Eukaryotic Microbiology
Issue number3
Publication statusPublished - May 1998


  • Double walled vesicles
  • Electrondense spindle plaques
  • Encephalitozoon hellem
  • Microsporidia
  • Microtubules

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Applied Microbiology and Biotechnology
  • Agricultural and Biological Sciences (miscellaneous)
  • Microbiology


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