A Mössbauer spectrometry study of iron in hepatic and splenic tissues. Preliminary results
| Autor: | C. Audebert, D. Fortier, C. Hubert, J. N. Rimbert, C. Kellershohn |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
magnetic order
liver 01 natural sciences hemosiderin 03 medical and health sciences symbols.namesake iron Nuclear magnetic resonance 0103 physical sciences Mössbauer spectroscopy molecular biophysics 010306 general physics Mossbauer spectrometry superparamagnetic properties 030304 developmental biology 0303 health sciences Zeeman effect Mössbauer effect biology Chemistry splenic tissues Radiochemistry Liquid nitrogen nuclear Zeeman effect Ferritin horse liver [PHYS.HIST]Physics [physics]/Physics archives Hemosiderin 4.2K symbols biology.protein horse spleen Mossbauer effect ferritin molecules Superparamagnetism |
| Zdroj: | Revue de Physique Appliquée Revue de Physique Appliquée, Société française de physique / EDP, 1980, 15 (6), pp.1175-1178. ⟨10.1051/rphysap:019800015060117500⟩ |
| ISSN: | 0035-1687 2777-3671 |
| Popis: | Ferritin, mammalian iron reserve protein, is made of a ferric hydroxide core enclosed in a protein shell. Several Mössbauer spectrometry studies have been carried out on ferritin molecules extracted from horse spleen. They demonstrate the existence of superparamagnetic properties in the iron core and the coming out of a nuclear Zeeman effect, characteristic of a magnetic order, below 40-30 K temperatures. Among the organs and tissues of the boby, the liver and spleen usually rank highest in iron content, mainly as ferritin and hemosiderin. In the present work, Mössbauer spectra of lyophylized samples of liver and spleen from horse, beef and calf have been recorded at room, liquid nitrogen and liquid helium temperature. In accordance with the previous works we find for the lyophylized horse spleen samples, the spectra at 4.2 K are mainly characterized by a Zeeman effect of the iron nucleus. On the other hand, in lyophylized samples of horse liver, even at liquid helium temperature, a doublet corresponding to Fe3+ is observed, in addition to the Zeeman sextuplet, representing an important fraction of the Mössbauer spectrum. |
| Databáze: | OpenAIRE |
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