The effect of zinc on insulin metabolism

Edward R. Arquilla, Steven Packer, Warren Tarmas, Suzanne Miyamoto

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Experiments were designed to study the effect of Zn on in vivo and in vitro insulin metabolism. The in vivo experiments involved pretreating mice with either Zn or Na, followed by ip [126I]iodoinsulin injection. Pretreatment of mice with Zn resulted in an accelerated and increased magnitude of binding of [125I]iodoinsulin to the liver compared to mice pretreated with Na. Results are submitted which support the probability that the changes in the amounts of intact and degraded insulin in circulation with time are related to the binding and degradation of insulin in the liver rather than in the kidney. In vivo ip injected insulin was demonstrated to preferentially bind to the plasma membrane of the liver. Liver plasma membranes isolated from mice pretreated with Zn bound more [125I]iodoinsulin than plasma membranes of Na-pretreated mice. In vitro experiments employing isolated liver plasma membranes demonstrated that added Zn increased the binding and inhibited the degradation of insulin. Evidence is presented that supports the concept that two receptors exist, one at which degradation of [126I]iodoinsulin occurs and another at which degradation does not occur.

Original languageEnglish (US)
Pages (from-to)1440-1449
Number of pages10
JournalEndocrinology
Volume103
Issue number4
DOIs
StatePublished - 1978
Externally publishedYes

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Zinc
Insulin
Cell Membrane
Liver
Kidney
Injections
iodo-insulin
In Vitro Techniques

ASJC Scopus subject areas

  • Endocrinology

Cite this

Arquilla, E. R., Packer, S., Tarmas, W., & Miyamoto, S. (1978). The effect of zinc on insulin metabolism. Endocrinology, 103(4), 1440-1449. https://doi.org/10.1210/endo-103-4-1440

The effect of zinc on insulin metabolism. / Arquilla, Edward R.; Packer, Steven; Tarmas, Warren; Miyamoto, Suzanne.

In: Endocrinology, Vol. 103, No. 4, 1978, p. 1440-1449.

Research output: Contribution to journalArticle

Arquilla, ER, Packer, S, Tarmas, W & Miyamoto, S 1978, 'The effect of zinc on insulin metabolism', Endocrinology, vol. 103, no. 4, pp. 1440-1449. https://doi.org/10.1210/endo-103-4-1440
Arquilla ER, Packer S, Tarmas W, Miyamoto S. The effect of zinc on insulin metabolism. Endocrinology. 1978;103(4):1440-1449. https://doi.org/10.1210/endo-103-4-1440
Arquilla, Edward R. ; Packer, Steven ; Tarmas, Warren ; Miyamoto, Suzanne. / The effect of zinc on insulin metabolism. In: Endocrinology. 1978 ; Vol. 103, No. 4. pp. 1440-1449.
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