ISSN:
0003-276X
Keywords:
Calbindin-D28k
;
CaBP
;
Turtle
;
Immunocytochemistry
;
Kidney
;
Brain/cerebellum
;
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
Backgrouns: Since its initial discovery in the avian intestine, calbindin-D28k has been reported to occur in various species and tissues. Although calbindin-D28k binds calcium ions in the physiologically relevant range of intracellular calcium, its functional role in the various cell types where it has been localized remains unknown.Methods: We examined the occurrence of calbindin-D28k in the brain and kidney of the testudine reptile, Trachemys scripta, by immunoblotting and immunocytochemistry using rabbit anti-sera directed against rat renal calbindin-D28k and chicken intestinal calbindin-D28k.Results: Immunoblotting revealed the presence of calbindin-D28k in the turtle tissues. A single immunoreactive band in the 28,000 relative molecular mass region was visualized in cerebellar and renal homogenates. Immunocytochemistry revealed reaction product for the presence of calbindin-D28k in the Purkinje cells of the cerebellum, and in the distal tubular cells of the nephron. Processes as well as the perikaryon of the Purkinje cell were immunoreactive.Conclusion: This study describes the occurrence and cellular localization of calbindin-D28k in a reptilian cerebellum, and confirms the phylogenetic distribution of renal calbindin-D28k to the oldest major reptilian group. © 1994 Wiley-Liss, Inc.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/ar.1092390209
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