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Potential Influence of Diet on Bomb-Pulse Dating of Human Plaque Samples

Published online by Cambridge University Press:  09 February 2016

Elisavet Andersson Georgiadou ,
Isabel Gonçalves ,
Cintia Bertacchi Uvo ,
Jan Nilsson ,
Göran Skog ,
Sören Mattsson ,
Luis M Pedro ,
José Fernandes e Fernandes  and
Kristina Eriksson Stenström
Elisavet Andersson Georgiadou*
Affiliation:
Lund University, Department of Physics, Division of Nuclear Physics, Box 118, SE-221 00 Lund, Sweden
Isabel Gonçalves
Affiliation:
Department of Cardiology, Skåne University Hospital, Malmö, Sweden Cardiovascular Research Group, Department of Clinical Sciences, Malmö, Sweden
Cintia Bertacchi Uvo
Affiliation:
Lund University, Water Resources Engineering, Box 118, SE-221 00 Lund, Sweden
Jan Nilsson
Affiliation:
Cardiovascular Research Group, Department of Clinical Sciences, Malmö, Sweden
Göran Skog
Affiliation:
Lund University, Radiocarbon Dating Laboratory, Box 118, SE-221 00 Lund, Sweden
Sören Mattsson
Affiliation:
Lund University, Department of Clinical Sciences Malmö, Medical Radiation Physics, Skåne University Hospital, SE-205 02 Malmö, Sweden
Luis M Pedro
Affiliation:
Cardiovascular Institute of Lisbon, Lisbon, Portugal
José Fernandes e Fernandes
Affiliation:
Cardiovascular Institute of Lisbon, Lisbon, Portugal
Kristina Eriksson Stenström
Affiliation:
Lund University, Department of Physics, Division of Nuclear Physics, Box 118, SE-221 00 Lund, Sweden
*
2Corresponding author. Email: [email protected].
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Abstract

The radiocarbon concentration of different atherosclerotic plaque fragments obtained from 20 patients in Portugal, operated in 2000–2001, has been measured in order to define the year of plaque formation. A difference of 1.8–15 yr was observed, with the mean and median both 9 yr, between the bomb-pulse date estimated with the CALIBomb software and the operation date. Stable isotope (δ13C and δ15N) analysis was also performed and provides insight to the diet of the subjects. The wide range of measured stable isotope values could indicate that the subjects' diet varied, including an abundance of marine foodstuffs. It could also mean a different isotope fractionation process for the different plaque fragments (cap, core, interface to media) and a possible difference in tissues in which the various fragments are formed. Analysis of δ13C and δ15N values of each patient separately revealed subjects considered more influenced by marine foodstuffs consumption.

Type
Articles
Information
Radiocarbon , Volume 55 , Issue 2: Proceedings of the 21st International Radiocarbon Conference (Part 1 of 2) , 2013 , pp. 874 - 884
Copyright
Copyright © 2013 by the Arizona Board of Regents on behalf of the University of Arizona 

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