Summary
Cl, the first component of human complement, was activated to Cls by diluting human
plasma in a solution of low ionic strength. The addition of lysine and its related
aminoacids to plasma resulted in inhibition of Cl activation, α, ω-diaminoacids such
as lysine and ornithine were most effective and ω-aminoacids such as 6 aminohexanoic
acid were far less effective. Tranexamic acid which is most potent in inhibition of
fibrinolysis among those aminoacids was least effective in the inhibition of Cl activation,
ω-aminoacids or their analogues hardly inhibited Cls which had already been activated.
Keywords
Cl - Lysine - 6 AHA - Tranexamic acid