Zinc and copper in bone and teeth of mice

Fosse, Gisle; Justesen, Nils-Petter Berg

doi:10.1080/00207237808709770

Cited by 12 publications

(2 citation statements)

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“…When the Zn and Cu contents of the fossil teeth are compared with those of modern, ideally fed laboratory rats, the recorded levels may well represent those existing in the living animals [9,13,27]. At least there has been no influx of these elements during fossilization; if anything has changed postmortem, there must have been a slight leaching of the elements.…”

Section: Discussionmentioning

confidence: 96%

“…Having for some years been engaged in the study of trace element levels in hard tissues and organs of living animals, particularly in teeth as indicators of total absorption [9,10], we also wanted to measure the content of some toxic and essential trace elements in the fossil teeth, considering them as potential indicators of the amount and proportion of these elements in the diet and environment of the living animals.…”

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confidence: 99%

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Microstructure and chemical composition of fossil mammalian teeth

1981

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Sectioned Cretaceous mammalian teeth were studied by light microscopy and SEM equipment with an electron microprobe. Structures resembling odontoblast processes were found. Their S/Fe ratio was similar to that of rat odontoblast processes, but the amounts of these elements were far higher than in processes of recent teeth. It was concluded that they consisted of pyrite, but their reaction with mercurochrome indicated presence of proteins with SH groups. Fluorescence microscopy indicated traces of collagen in the dentin. In the fossil enamel and dentin the Ca/P ratio was similar to that of recent teeth. Two samples of fossil teeth were analyzed for Pb, Cd, Zn, and Cu content by atomic absorption spectrophotometry. The levels of the latter two elements were normal, whereas that of Cd and especially that of Pb were higher than in laboratory rats. The probability that original protein fractions exist and that the different elements were those of the living animals is discussed.

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Section: Discussionmentioning

confidence: 96%

mentioning

confidence: 99%