Proton microprobe analysis of pancreatic β-cells

U. Lindh, L. Juntti-Berggren, P. O. Berggren, B. Hellman

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Freeze-dried pancreas sections from obese-hyperglycemic mice were subjected to proton bombardment and the elemental contents in the β-cells and the exocrine part were obtained from the characteristic X-rays emitted. Quantitative data were provided for 18 different elements. The mole ratio between K and Na exceeded 10, implying that neither the sample preparation nor the irradiation had induced significant diffusive changes. With the demonstration of this high K/Na ratio it seems likely that also the β-cells are equipped with an efficient Na+/K+ pump. The β-cells contained about 70 mmoles Cl per litre cell water. Observed amounts of Ca and Mg were equivalent to those previously recorded by electrothermal atomic absorption spectroscopy. The significant role of Zn for the storage of insulin was emphasized by the demonstration of 3 times as much of this element in the β-cells as compared with the exocrine pancreas. In addition, the sensitivity of the proton microprobe enabled measurements of various trace elements such as Rb, Cr, Cu, Al and Pb not previously demonstrated in the pancreatic β-cells.

Original languageEnglish
Pages (from-to)55-62
Number of pages8
JournalBiomedica Biochimica Acta
Volume44
Issue number1
StatePublished - Jan 1 1985
Externally publishedYes

Fingerprint

Protons
Demonstrations
Atomic spectroscopy
Trace Elements
Absorption spectroscopy
Obese Mice
Irradiation
Pumps
Insulin
X rays
Water
Exocrine Pancreas
Pancreas
Spectrum Analysis
X-Rays

ASJC Scopus subject areas

  • Biochemistry

Cite this

Lindh, U., Juntti-Berggren, L., Berggren, P. O., & Hellman, B. (1985). Proton microprobe analysis of pancreatic β-cells. Biomedica Biochimica Acta, 44(1), 55-62.

Proton microprobe analysis of pancreatic β-cells. / Lindh, U.; Juntti-Berggren, L.; Berggren, P. O.; Hellman, B.

In: Biomedica Biochimica Acta, Vol. 44, No. 1, 01.01.1985, p. 55-62.

Research output: Contribution to journalArticle

Lindh, U, Juntti-Berggren, L, Berggren, PO & Hellman, B 1985, 'Proton microprobe analysis of pancreatic β-cells', Biomedica Biochimica Acta, vol. 44, no. 1, pp. 55-62.
Lindh U, Juntti-Berggren L, Berggren PO, Hellman B. Proton microprobe analysis of pancreatic β-cells. Biomedica Biochimica Acta. 1985 Jan 1;44(1):55-62.
Lindh, U. ; Juntti-Berggren, L. ; Berggren, P. O. ; Hellman, B. / Proton microprobe analysis of pancreatic β-cells. In: Biomedica Biochimica Acta. 1985 ; Vol. 44, No. 1. pp. 55-62.
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