...F. Grases; A. Conte; C. Genestar; A. Costa-Bauzá In urolithogenic processes both, promoters and deficit of inhibitors, play an important role. The inhibitory action of added inhibitors (magnesium, citrate, pyrophosphate and chondroitin sulphate) was investigated using the urine of 72 patients...

...S. Sharma; S. Vaidyanathan; S.K. Thind; R. Nath 24 h urinary pyrophosphate excretion was studied in 20 normal healthy subjects and 75 idiopathic stone formers from north-western regions of India. The mean 24-hour urinary excretion of pyrophosphate was significantly low in stone formers (50.67...