Document Detail

Fluoride and iron concentrations in the enameloid of lower teleostean fish.
MedLine Citation:
PMID:  8501289     Owner:  NLM     Status:  MEDLINE    
Our quantitative elemental analyses with the electron microprobe indicated that the fluoride and iron concentrations in the enameloid of bony fish are related to the phylogeny of fish. The enameloid of some bony fish with high F also contained high Fe. In order to clarify the phylogenetic significance of such a peculiar dual deposition of F and Fe into developing enameloid, quantitative electron microprobe analyses of these elements were made on the teeth of taxonomically lower teleosts. There were significantly different trends of F and Fe concentrations in the enameloid among various forms of lower teleosts. In the Osteoglossiformes, the enameloid of the osteoglossid species contained very low levels of F and Fe, whereas in the single representative of the Mormyroidei, the F was very low but Fe was very high. In the Elopomorpha, the enameloid of the elopiform species contained a medium level of F and high Fe, and that of the anguilliform high levels of F and Fe. In the Salmoiformes, the salmonid species had medium F and high Fe, and in a species of the Esocidae, high F and high Fe levels were found. The stomiiform fish exhibited levels of medium and high F and high Fe. The results of the present study and our previous investigations made on archaic non-teleostean and various teleostean fish indicate that the mechanisms of F and Fe concentrations into developing enameloid are independent of each other, and that the mechanisms of Fe concentration appeared earlier and disappeared later than, or concurrently with, that of the F concentration, in the course of fish evolution.
S Suga; Y Taki; M Ogawa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dental research     Volume:  72     ISSN:  0022-0345     ISO Abbreviation:  J. Dent. Res.     Publication Date:  1993 May 
Date Detail:
Created Date:  1993-06-28     Completed Date:  1993-06-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0354343     Medline TA:  J Dent Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  912-22     Citation Subset:  D; IM    
Department of Pathology, Nippon Dental University, School of Dentistry, Tokyo, Japan.
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MeSH Terms
Dental Enamel / anatomy & histology,  chemistry*
Electron Probe Microanalysis
Fishes / classification*
Fluorides / analysis
Iron / analysis
Reg. No./Substance:
0/Fluorides; 7439-89-6/Iron

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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