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Biological Variation in Circulating Levels of Mannan-Binding Lectin (MBL) and MBL-Associated Serine Protease-2 and the Influence of Age, Gender and Physical Exercise.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

  • Henriette Ytting
  • Ib Jarle Christensen
  • S. Thiel
  • J. C. Jensenius
  • Mads Nordahl Svendsen
  • L. Nielsen
  • T Lottenburger
  • phw435, phw435
Mannan-binding lectin (MBL) and MBL-associated serine protease 2 (MASP-2) are central components of the MBL pathway of complement activation, and may have potential as clinical biomarkers in colorectal cancer (CRC). Prior to clinical usage, knowledge of the biological variations of the molecules is needed. We here investigate variations of MBL and MASP-2 in healthy persons over time and in relation to gender, age and physical activity. MBL and MASP-2 concentrations were determined in serum from healthy adults over a 3-week period and this was repeated 6 months later (n = 32); during a 24-h period (n = 16); and in relation to physical exercise (n = 14). Concentrations in serum and plasma were compared (n = 198). No significant variation over 6 months and no circadian variation was found for MBL (P = 0.39 and P = 0.34 respectively) or MASP-2 (P = 0.54 and P = 0.55). Physical exercise did not affect the levels (P > 0.8). Serum and plasma levels were only marginally different, and were independent of age and gender. Circulating levels of MBL and MASP-2 are stable over time in healthy individuals, which is advantageous for their potential application as biomarkers.
Udgivelsesdato: oktober
OriginalsprogEngelsk
TidsskriftScandinavian Journal of Immunology
Vol/bind66
Udgave nummer4
Sider (fra-til)458-64
Antal sider7
ISSN0300-9475
DOI
StatusUdgivet - 2007

ID: 34088460