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The immune system as a physiological indicator of marginal copper status?

Published online by Cambridge University Press:  09 March 2007

Maxine Bonham*
Affiliation:
Northern Ireland Centre for Diet and Health (NICHE), University of Ulster at Coleraine BT52 1SA, Northern Ireland, UK
Jacqueline M. O'Connor
Affiliation:
Northern Ireland Centre for Diet and Health (NICHE), University of Ulster at Coleraine BT52 1SA, Northern Ireland, UK
Bernadette M. Hannigan
Affiliation:
Northern Ireland Centre for Diet and Health (NICHE), University of Ulster at Coleraine BT52 1SA, Northern Ireland, UK
J. J. Strain
Affiliation:
Northern Ireland Centre for Diet and Health (NICHE), University of Ulster at Coleraine BT52 1SA, Northern Ireland, UK
*
*Corresponding author: Miss M. Bonham, fax +44 2870 324965, email mp.bonham@ulst.ac.uk
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Abstract

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Cu appears to have many important functional roles in the body that apparently relate, among others, to the maintenance of immune function, bone health and haemostasis. Some have suggested a role for long-term marginal Cu deficiency in the aetiology of a number of degenerative diseases. Accurate diagnosis of marginal Cu deficiency, however, has remained elusive despite an increased understanding of the biochemistry of Cu and its physiological roles in the body. Traditional markers of Cu status, such as serum Cu and caeruloplasmin protein concentrations are insensitive to subtle changes in Cu status. Cu-containing enzymes, such as Cu–Zn-superoxide dismutase, cytochrome c oxidase and diamine oxidase, may be more reliable but evidence to date is not conclusive. Development of markers sensitive to marginal Cu status is essential before conclusions can be drawn concerning the risks of long-term intake of suboptimal dietary Cu. As Cu appears to be essential for maintenance of immune function, activities of specific immunological markers, altered in Cu deficiency, offer alternatives. This review evaluates a selection of immunological markers that could be considered potentially sensitive markers of marginal Cu status. The indices of immune function reviewed are neutrophil function, interleukin 2 production, blastogenic response to mitogens and lymphocyte subset phenotyping.

Information

Type
Review article
Copyright
Copyright © The Nutrition Society 2002