| Title |
Analysis of the secretions of the subcommissural organs of several vertebrate species by use of fluorescent lectins
|
|---|---|
| Published in |
Cell and Tissue Research, February 1985
|
| DOI | 10.1007/bf00218016 |
| Pubmed ID | |
| Authors |
Robert Meiniel, Annie Meiniel |
| Abstract |
The glycoprotein secretions of the subcommissural organ were analyzed with the use of nine fluorescent lectins, specific to different sugar moieties. After exposure to Concanavalin A a bright fluorescence was observed in the ependymal cells of the subcommissural organs of all vertebrates studied (Lampetra planeri, Ameiurus nebulosus, Bufo bufo, Lacerta vivipara, Gallus gallus, Rattus norvegicus, Ovis aries). The fluorescence is abolished by the competitive sugar, alpha-D-mannopyranosyl. The intensity of the lectin fluorescence decreases from the phylogenetically lower to the higher forms, paralleled by a change in polarity of the secretion from a vascular (lower vertebrates) to a ventricular (higher vertebrates) direction. The strong affinity for Concanavalin A suggests the presence of a glycoprotein rich in mannosyl residues in the ependymal cells and a similarity of composition of this glycoprotein among the vertebrates. Lens culinaris agglutinin and wheat germ agglutinin revealed fluorescent "rosettes" in the hypendymal cells of the sheep. Binding of both these lectins suggests the presence of a glycoprotein rich in N-acetyl-D-glucosamine. In the underlying ventricular cavity, no fluorescence could be observed, suggesting that the Reissner's fiber does not possess the same carbohydrate constitution as the ependymal secretion of the subcommissural organ. |
Mendeley readers
The data shown below were compiled from readership statistics for 3 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 3 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Professor > Associate Professor | 1 | 33% |
| Student > Bachelor | 1 | 33% |
| Researcher | 1 | 33% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 1 | 33% |
| Engineering | 1 | 33% |
| Unknown | 1 | 33% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 January 2021.
All research outputs
#7,862,539
of 23,839,820 outputs
Outputs from Cell and Tissue Research
#527
of 2,279 outputs
Outputs of similar age
#7,417
of 39,320 outputs
Outputs of similar age from Cell and Tissue Research
#1
of 4 outputs
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