PAS-positive Cells of the Pars Intermedia Are Calcium-sensitive in the Goldfish Maintained in a Hyposmotic Milieu

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1980 Jan 1

PMID 7438194

Citations 12

Authors

M Olivereau

C Aimar

J M Olivereau

Affiliations

Soon will be listed here.

Abstract

Cytological changes in the pars intermedia of the goldfish were investigated after adding calcium to deionized water (DW). In fish maintained in DW, the PAS-positive cells are highly stimulated in comparison to cells of fish kept in fresh water (FW). In DW supplemented with calcium at the same concentration as in FW (2 mM/l), the hyperactivity of the PAS-positive cells is prevented. When calcium ions are added 60 h before the animals are sacrificed, the PAS positive cells start to show signs of regression and their granules are stored: the release of the granular material appears to be suppressed by calcium. In the goldfish, the PAS-positive cells, homologous to a similar cell type in the eel, react only very weakly with the PAS technique. The name "calcium-sensitive cells" appears to be more appropriate in the goldfish for this particular cell type, secreting an unknown factor. This factor, different from the prolactin produced in the rostral pars distalis of the hypophysis, might be an equivalent of a "hypercalcin".

Citing Articles

An immunocytochemical study of pituitary cells of the Senegalese sole, Solea senegalensis (Kaup 1858).

Rendon C, Rodriguez-Gomez F, Munoz-Cueto J, Pinuela C, Sarasquete C Histochem J. 1998; 29(11-12):813-22.

PMID: 9466148 DOI: 10.1023/a:1026481521916.

Specific effect of calcium ions on the calcium-sensitive cells of the pars intermedia in the goldfish.

Olivereau M, Olivereau J, Aimar C Cell Tissue Res. 1981; 214(1):23-31.

PMID: 7471174 DOI: 10.1007/BF00235141.

Ultrastructural changes in the calcium-sensitive (PAS-positive) cells of the pars intermedia of eels kept in deionized water and in normal and concentrated sea water.

Olivereau M, CHAMBOLLE P, Dubourg P Cell Tissue Res. 1981; 219(1):9-26.

PMID: 7285100 DOI: 10.1007/BF00210015.

Response of calcium-sensitive cells in the pars intermedia of the goldfish adapted to diluted sea water with different calcium and magnesium contents.

Olivereau M, Olivereau J, Aimar C Cell Tissue Res. 1982; 225(3):497-505.

PMID: 7127406 DOI: 10.1007/BF00214800.

Calcium-sensitive cells of the pars intermedia and osmotic balance in the eel. II. Response to calcium-free sea water.

Olivereau M, Olivereau J Cell Tissue Res. 1982; 225(3):487-96.

PMID: 7127405 DOI: 10.1007/BF00214799.

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