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The effect of zinc deficiency on alkaline phosphatase (EC 3.1.3.1) and its isoenzymes

Published online by Cambridge University Press:  09 March 2007

F. A. Adeniyi  and
F. W. Heaton
F. A. Adeniyi
Affiliation:
Department of Biological Sciences, University of Lancaster, Lancaster LA 1 4YQ
F. W. Heaton
Affiliation:
Department of Biological Sciences, University of Lancaster, Lancaster LA 1 4YQ
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Abstract

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1. Zinc deficiency in young rats reduced both the total alkaline phosphatase (EC 3.1.3.1) activity and Zn concentration in serum, kidney, small intestine and femur.

2. Addition of 0.01 mM-exogenous Zn had no greater activating effect with extracts of kidney, small intestine and femur from Zn-deficient than control rats, indicating that the main effect of the deficiency was on the amount of enzyme present rather than the efficiency of its operation. Exogenous Zn increased the activity of enzyme in serum of Zn-deficient rats, but it was still lower than in the serum of control animals.

3. Electrophoresis on polyacrylamide gel separated the alkaline phosphatase activity from all tissues into two bands. The bands had similar electrophoretic mobilities and appeared to be qualitatively identical in corresponding tissues from Zn-deficient and control rats.

4. Zn deficiency eliminated the first band found in serum from control rats and it had selective effects on the activity of individual bands in other tissues. The major inhibitory effect was on the first bands of enzyme activity in kidney and femur, but in small intestine only the second band was affected. In liver the activity of the first band was increased and that of the second band decreased by similar amounts.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 43 , Issue 3 , May 1980 , pp. 561 - 569
Copyright
Copyright © The Nutrition Society 1980

References

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