The influence of coumarin on blood levels of radio labelled protein and radio labelled poly-vinyl-pyrrolidone in thermally injured rats.

The evidence presented in this paper suggests that coumarin is a RES stimulator. An enhanced removal of both RPP and radio RPVP was observed beginning at or before 30 minutes and lasting up to 6 hours. Over this time, RPP removal was enhanced by an average of 40%, while RPVP removal was enhanced by 60%. Since RPVP is non-metbabolizable, its levels may be a more accurate estimate of the stimulatory effect of coumarin. This evidence fits in well previous results which have suggested that coumarin may increase the number of phagocytic cells. Other results have shown enhancement of protein lysis by 74% over similar periods, while enhanced protease activity levels of 50% have been observed to accompany this.