[Mechanisms of the pulmonary congestion in ligature strangulation (IV)].

The authors determined by radioimmunoassay, spectrophotometry or fibrin plate method the changes of levels of plasma or serum vasomotor (renin, bradykinin, plasmin, lactic acid and ferritin) of guinea-pigs sacrificed by ligature strangulation. This experiment was a part of the studies on the mechanisms of the pulmonary congestion in ligature strangulation. 1) In the ligature strangulation group, significant high levels of plasma renin was observed when compared with the presacrificed group and the beating on occiput group. 2) In both the ligature strangulation group and the beating on occiput group, significant high levels of plasma lactic acid were observed when compared with the presacrificed group. However, between the above-mentioned two groups, there were no significant differences in the levels of this substance. 3) Between the ligature strangulation group and the presacrificed group, there were no significant differences in the levels of plasma bradykinin and plasmin and serum ferritin.