Abnormal proteins in the cerebrospinal fluid of a patient with Creutzfeldt-Jakob disease following administration of human pituitary growth hormone.

A Brazilian case of Creutzfeldt-Jakob disease in a hypopituitary patient who had received cadaver-derived human pituitary growth hormone between 1968 and 1977 is reported. The clinical diagnosis was confirmed during his lifetime by the demonstration of two abnormal 30-kDa proteins in the cerebrospinal fluid by two-dimensional gel electrophoresis. These proteins, characteristic of Creutzfeldt-Jakob disease, present isoelectric points of 5.1 and 5.2. Furthermore, both proteins migrate as doublets, each one displaying a molecular weight variant of about 29-kDa. This is one of 16 cases of the disease associated to therapy with cadaver-derived human growth hormone and one of the few examples among such cases of confirmation of the clinical diagnosis by biochemical characterization of abnormal proteins in the cerebrospinal fluid.