In 1979, we found a strain of kininogen-deficient Brown Norway rats. S
ince then, several studies have used these animals as negative control
s of the involvement of the kinin system in physiological and pathophy
siological processes. The cause of this deficiency has now been elucid
ated. This article reviews studies performed with these kininogen-defi
cient rats. These investigations have mainly focused on the links betw
een the kinin system and the kidneys, hypertension, salivary glands, a
cute inflammatory reactions, cysteine proteinase inhibition, lymphatic
tissues, coagulation, and cardiovascular shock states.