Sodium and Calcium Localization in Cells and Tissues by Precipitation with Antimonate: a Quantitative Study
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Komnick's antimonate technique, which was devised to localize Na+ in cells and tissues, was studied quantitatively. Some modifications, as well as its application to Ca2+ localization, were also investigated. We combined measurements of Na+ and Ca2+ retention in plant roots during the various procedures, electron microscopy, autoradiography, and semiquantitative X-ray microanalysis. We were able to show that (at least in barley roots) antimonate does not precipitate at all with Na+, irrespective of the Na+ content of the tissue or the method of antimonate application. (Even during precipitative freeze dissolution or after freeze drying, no Na+ is precipitated.) By means of Komnick's antimonate technique Ca2+ is trapped within the tissue, but only after serious dislocation. Perspectives for reliable localization of diffusible ions in cells and tissues, by precipitation simultaneously with conventional fixations, are bad.
Jansen W, Burger E, Zandbergen M Cell Tissue Res. 1982; 224(1):169-80.
PMID: 7094005 DOI: 10.1007/BF00217276.
Gronblad M, Akerman K, Eranko O Cell Tissue Res. 1981; 217(1):93-104.
PMID: 6788374 DOI: 10.1007/BF00233829.
Timms B, Chandler J Histochem J. 1984; 16(7):733-54.
PMID: 6469702 DOI: 10.1007/BF01095279.
Calcium localization in nerve fibers in relation to axoplasmic transport.
Ochs S, Jersild Jr R Neurochem Res. 1984; 9(6):823-36.
PMID: 6208491 DOI: 10.1007/BF00965669.
Krefting E, Hohling H, Felsmann M, Richter K Histochemistry. 1988; 88(3-6):321-6.
PMID: 3366637 DOI: 10.1007/BF00570290.