Accumulation of insulin-gold particles in the oral apparatus of Tetrahymena after insulin pretreatment (imprinting)

A. K. Fülöp, G. Csaba

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Abstract

The oral apparatus and body ciliature of untreated control cells bind insulin-gold very rarely. From 1 day to 1 week after insulin pretreatment (hormonal imprinting) an enormous quantity of insulin-gold was bound by the oral cilia, completely filling the region, while the insulin-gold on the body ciliature is scattered. The binding was specific for insulin, since polyethylene glycol (PEG)-gold was not bound at all. The results call attention to the binding and the increasing role of hormonal (insulin) imprinting, and particularly to the marked role of the oral region in this binding. The roles of mucocyst extrusion and specific binding by receptors are discussed.

Original languageEnglish
Pages (from-to)123-128
Number of pages6
JournalMicrobios
Volume90
Issue number363
Publication statusPublished - Dec 1 1997

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Keywords

  • Hormonal imprinting
  • Insulin localization
  • Scanning electron microscopy
  • Tetrahymena

ASJC Scopus subject areas

  • Microbiology
  • Microbiology (medical)

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