Three pathways for human kidney stone formation.
No single theory of pathogenesis can properly account for human kidney stones, they are too various and their formation is too complex for simple understanding. Using human tissue biopsies, intraoperative imaging and such physiology data from ten different stone forming groups, we have identified at least three pathways that lead to stones. The first pathway is overgrowth on interstitial apatite plaque as seen in idiopathic calcium oxalate stone formers, as well as stone formers with primary hyperparathyroidism, ileostomy, and small bowel resection, and in brushite stone formers. In the second pathway, there are crystal deposits in renal tubules that were seen in all stone forming groups except the idiopathic calcium oxalate stone formers. The third pathway is free solution crystallization. Clear examples of this pathway are those patient groups with cystinuria or hyperoxaluria associated with bypass surgery for obesity. Although the final products may be very similar, the ways of creation are so different that in attempting to create animal and cell models of the processes one needs to be careful that the details of the human condition are included.
Coe
Fredric L
FL
Department of Medicine, University of Chicago, Nephrology Section/MC 5100, 5841 South Maryland Avenue, Chicago, IL, 60637, USA. fcoe@uchicago.edu
Evan
Andrew P
AP
Worcester
Elaine M
EM
Lingeman
James E
JE
D002129:Calcium Oxalate / Q000378:metabolism*; D006801:Humans; D007668:Kidney / Q000473:pathology*; D007669:Kidney Calculi / Q000378:metabolism* / Q000503:physiopathology; D053495:Osteopontin / Q000378:metabolism*
D053495:Osteopontin; D002129:Calcium Oxalate
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