Cell cultures and nephrolithiasis

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Abstract
While the physical chemistry of stone formation has been intensively studied during the last decade, it has become clear that the pathophysiology of renal stone disease cannot be explained by crystallization processes only. In recent years, evidence has emerged that the cells lining the renal tubules can have an active role in creating the conditions under which stones may develop. Since it is difficult to study these mechanisms in vivo, cultured renal tubular cells have become increasingly popular for the study of physiological and cell biological processes that are possibly linked to stone disease. In this paper, we discuss the possible contribution of cellular processes such as transepithelial oxalate transport and crystal-cell interaction to the formation of renal stones. Experimental studies that have been performed with cultured renal cells to elucidate the mechanisms involved in these processes will be summarized.