Nephrol Dial Transplant (2000) 15: 1269-1271
© 2000 European Renal Association-European Dialysis and Transplant Association
Editorial Comments
MHC genes, body odours, and odour preferences
University of Utah, Department of Biology, Salt Lake City, Utah, USA
Introduction
Increasing evidence indicates that the highly polymorphic genes of the major histocompatibility complex (MHC) influence odour and mating preferences in house mice and humans [1]. MHC genes encode cell-surface glycoproteins (class I and II molecules) that bind short peptides and present them to T lymphocytes. Through this mechanism, MHC genes control the immunological self/non-self discrimination, and subsequently, tissue rejection and immune recognition of infectious diseases. Thus, it is suspected that the extraordinary polymorphism of MHC loci is maintained by balancing selection from infectious diseases, though direct evidence for this hypothesis is lacking [2]. Surprisingly, the best evidence indicates that MHC polymorphisms are driven by sexual selection. Studies in house mice indicate that both males and females prefer MHC-dissimilar mates [35], who they apparently recognize by odour cues [6]. Studies in humans have also found MHC-associated odour [7] and
Hypotheses about the functional significance
Odour and mating preferences in humans
Hypotheses about the mechanism of odour production
Acknowledgments
Notes
References
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