Ontogeny of calbindin-D28K and calretinin in developing chick kidney

The ontogeny of two calcium-binding proteins (calbindin-D28k and calretinin) was studied by immunohistochemical techniques in developing chick kidney. This study showed the presence of calbindin on the 5th incubation day and calretinin on the 7th incubation day in mesonephric distal and connecting t...

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Bibliographic Details
Published in:Cell and tissue research 1995-01, Vol.279 (1), p.209-213
Main Authors: Daneo, L S, Corvetti, G, Panattoni, G L
Format: Article
Language:English
Subjects:
Animals
Calbindin 1
Calbindin 2
Calbindins
Chick Embryo
Humans
Infant, Newborn
Kidney - embryology
Kidney - metabolism
Kidney - ultrastructure
Kidney Glomerulus - metabolism
Kidney Glomerulus - ultrastructure
Kidney Tubules - metabolism
Kidney Tubules - ultrastructure
Mesonephros - metabolism
Mesonephros - ultrastructure
S100 Calcium Binding Protein G - biosynthesis
Wolffian Ducts - metabolism
Wolffian Ducts - ultrastructure
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Summary:The ontogeny of two calcium-binding proteins (calbindin-D28k and calretinin) was studied by immunohistochemical techniques in developing chick kidney. This study showed the presence of calbindin on the 5th incubation day and calretinin on the 7th incubation day in mesonephric distal and connecting tubules, and in the medial wall of the Wolffian duct. At later stages, immunostaining for these two proteins, in particular for calretinin, was also demonstrated in some metanephric proximal tubules. Glomeruli and Bowman's capsules were negative both in the mesonephros and metanephros. The presence of calretinin in the developing kidney has thus been demonstrated for the first time. The early expression of calbindin and calretinin in mesonephric distal tubules suggests their role in regulating the final excretion of calcium. The different patterns of immunoreactivity of the walls of the Wolffian duct can be correlated with their different histogenetic and histological features.
ISSN:0302-766X
1432-0878
DOI:10.1007/BF00300705