PMID: 3768729Oct 1, 1986Paper

Thyroid state and cholecalcin (calcium-binding protein) in cerebellum of the developing rat

Brain Research
A RabiéM Thomasset

Abstract

Cholecalcin (28,000 Da, vitamin D-dependent calcium-binding protein) is a marker of Purkinje cell development in the rat cerebellum from embryonic day 17 when these cells can first be distinguished. Specific antibodies raised against human cerebellar or rat renal cholecalcin were used in an immunocytochemical and quantitative study in altered thyroid states. The immunocytochemical staining was qualitatively similar in both normal and hypothyroid animals but clearly demonstrated the slowing of Purkinje cell development resulting from the lack of thyroxine. This effect was also reflected in quantitative studies which showed that the total cholecalcin per cerebellum was lower in thyroid-deficient rats. However, there was, in these animals, no specific reduction in cholecalcin level. Moreover, the response to thyroxine treatment indicated that the synthesis of cholecalcin occurred later and slower than that of the majority of cerebellar proteins and even after other more complex mechanisms of cerebellar cortex development (such as neurite outgrowth) have been induced. Thus, cholecalcin synthesis does not appear particularly sensitive to thyroid hormone level but might rather follow the increase in cell size induced by the hormone.

References

Dec 1, 1979·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·L A Sternberger
Oct 1, 1979·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society
Jun 20, 1977·Biochemical and Biophysical Research Communications·P MarcheM Thomasset
Jan 1, 1976·Analytical Biochemistry·A Bensadoun, D Weinstein
Apr 1, 1968·Archives of Biochemistry and Biophysics·R A CorradinoS I Chang
May 6, 1966·Science·R H Wasserman, A N Taylor

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