Journal article
Structure and division of the Golgi complex in Trichomonas vaginalis and Tritrichomonas foetus
European journal of cell biology, Vol.80(9), pp.593-607
2001
Handle:
https://hdl.handle.net/2376/114963
PMID: 11675935
Abstract
We present observations on the fine structure and the division process of the Golgi complex in the protists
Trichomonas vaginalis and
Tritrichomonas foetus, parasites of the urogenital tract of humans and cattle, respectively. The Golgi in trichomonads is a prominent structure, associated with striated parabasal filaments to which this organelle seems to be connected. We followed by immunofluorescence and electron microscopy the Golgi in interphasic and mitotic cells. Ultrastructural studies were performed using fast-freezing fixation, immunocytochemistry using antisera to the known adhesins AP65 and AP51, cytochemistry (acid phosphatase, Ca
++-ATPase, zinc iodide-osmium tetroxide technique (ZIO), for analysis of distribution of the endoplasmic reticulum and Golgi complex, and Thiéry's techniques), routine and serial thin-sections. Three-dimensional reconstruction, NBD-ceramide, fluorescent lectin (WGA) and nocodazole treatments were also used. We demonstrate that: (
1) the Golgi in trichomonads is a single-copy organelle; (
2) presents a fenestrated structure; (
3) is formed by 8 – 12 saccules; (
4) is connected to the parabasal filaments by thin filamentous bridges; (
5) by cytochemistry, presents a positive reaction for the lectin WGA, Ca
++-ATPase, acid phosphatase, ZIO and Thiéry's techniques; (
6) does not appear to break down at any point of the cell cycle; (
7) elongates during the cell cycle by lateral growth; (
8) is labeled by anti-glutamylated tubulin antibodies, but it is not fragmented by nocodazole treatment; (
9) before mitosis, the already elongated Golgi ribbon undergoes progressive medial fission, cisternae by cisternae, starting at the cisternae adjacent to the cell surface and ending with the cis-most cisternae; (
10) the Golgikinesis originates two small Golgi ribbons; (
11) the Golgi is intensely labeled with the antisera to the AP65 and AP51 adhesins in
T. vaginalis, thus seeming to be a key station in the production of adhesins.
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Details
- Title
- Structure and division of the Golgi complex in Trichomonas vaginalis and Tritrichomonas foetus
- Creators
- Marlene Benchimol - Universidade Santa Úrsula, Rio de Janeiro/BrazilKarla Consort Ribeiro - Universidade Santa Úrsula, Rio de Janeiro/BrazilRafael Meyer Mariante - Universidade Santa Úrsula, Rio de Janeiro/BrazilJohn F Alderete - Department of Microbiology, University of Texas Health Science Center, San Antonio, TX/USA
- Publication Details
- European journal of cell biology, Vol.80(9), pp.593-607
- Academic Unit
- Molecular Biosciences, School of
- Publisher
- Elsevier GmbH
- Identifiers
- 99900548154901842
- Language
- English
- Resource Type
- Journal article