Bacterial enzymes in uremia management. 
The theoretical background for a conservative therapeutic treatment of uremia is described, with illustrative results from preliminary clinical trials in 10 patients and 10 normal reference subjects.  The proposed treatment focuses upon the patient's gastrointestinal tract--the normal site for metabolism of both exogenous (dietary) and endogenous (recycled) protein--enabling it to behave like the rumen of the cow.  The objective is to induce the uremic's organism to utilize its own "waste" substances.  The patient swallows enterosoluble capsules containing specifically adapted enzymes (immobilized or free) from apathogenic soil microorganisms.  These are pre-adapted to convert urea, creatinine, uric acid, guanidino derivatives, and other nonprotein nitrogen compounds (NPN).  The enzymes utilize many other substances, in particular ammonia, potassium, phosphorus, and several other factors potentially dangerous for the uremic.  The enzymes apparently cleave vasoconstrictatory peptides in the intestines.  In the course of the therapy, renoparenchymal hypertension decreased significantly, and increased again when the regimen was interrupted.  The results from the present studies are in full accord with the information published in the relevant fields.  The time appears ripe for large-scale trials of the therapeutic regimen outlined, especially as many commercial microbial enzymes already have a long history of safe use in food processing.