Investigation the mechanism of renal stone formation by used the MDCK cell line.

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This study elucidates a cause of the calculus formation by making a model of humans nephrolith with a cultured cell. However, I was careless by making of an oxalic acid calculus.Model making of an oxalic acid calculus uses animal experiment together simultaneously, and a thought colander will not get transplant to an animal of MDCK cells. The renal tubular epithelial cells of a different kind animal was used in addition to a MDCK cells by this study, and the difference was examined, but the generation of a phosphoric acid calcium calculus was specifically watched only to a MDCK cell. We think that this participates in specific calcium ion transportation ability of this cell. It was suggested that vit. K and PGE2 participated in accumulation of the calcium for stone formation.As a result of having measured the UIT density in urine from a calculus patient of humans, we thought that it was effective in the UIT for calculus prevention.The osteopontin density known as one of a cause of calculus form was measured during urine of humans calculus patient, and we thought to be a promotion factor of the calculus formation.The calculus ingredient which a MDCK cell generates is different from oxalic acid calcium, and examination of these restraint factors and a promotion factor is not done enough this time because it is phosphoric acid calcium. If it is possible, a model forming an oxalic acid calcium calculus in this cell is done sequentially in future, and it is necessary to make clear it about these factors.