Calcium Oxalate Crystal Interaction with Rat Renal Inner Papillary Collecting Tubule Cells

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Abstract
Rat renal inner papillary collecting tubule cells (RPCT) have been isolated and maintained in primary culture. The cells have been found to be of only one type and they have maintained the characteristics of RPCT cells. The RPCT cells in culture appear as a monolayer with intermittent clumps of rounded cells. When small calcium oxalate monohydrate crystals (COM) or calcium oxalate dihydrate crystals (COD) are added to the monolayer of RPCT cells, the crystals bind on or about these clumps of rounded-up cells. The use of this system as a model for the study of crystal membrane interactions in crystalluria and urolithiasis is discussed.