The influence of psychic stress and brain death on the intestinal receptor for the cobalamin–intrinsic factor complex in rats

This study was undertaken to evaluate the effects of psychic stress on receptor activity. The model studied was the intestinal receptor for the intrinsic factor — cobalamin complex of the rat. Several kinds of stress tended to decrease the activity of the receptor, but not quite significantly. Brain death caused significant decrease. Pregnancy and oestradiol treatment were included as positive controls as they significantly increased receptor activity.