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An explanation of the mineralization mechanism in osteoblasts induced by calcium hydroxide.

机译:氢氧化钙诱导成骨细胞矿化机理的解释。

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Calcium hydroxide (Ca(OH)(2)) has been broadly used in endodontics, including apexification to obtain apical closure by mineralization. However, the detailed mechanism of mineralization induced by Ca(OH)(2) is still unclear. This study focuses on the function of calcium and hydroxyl ions which dissociate from Ca(OH)(2) during the mineralization process. Though primary osteoblasts cultured in the medium without or with 0.025mgml(-1) Ca(OH)(2) did not show mineralization, they did exhibit mineralization when they were cultured with a higher concentration of Ca(OH)(2) (0.25mgml(-1)). Mineralization induced in the presence of 0.25mgml(-1) Ca(OH)(2) was greater at pH 7.4 than at pH 8.5. The high mineralization activity observed under neutral conditions was caused by the prolonged activation of p38 and JNK. Hydroxyl ions did not have any effect on the mineralization. The results demonstrate that calcium ions dissociated from Ca(OH)(2) are critical for inducing the mineralization of osteoblasts.
机译:氢氧化钙(Ca(OH)(2))已广泛用于牙髓剂,包括通过矿化获得顶端闭合的渗透性。然而,Ca(OH)(2)诱导的矿化的详细机制仍不清楚。该研究重点研究了在矿化过程中从Ca(OH)(2)中离解的钙和羟基离子的功能。虽然在培养基中培养的主要成骨细胞没有或0.025mgml(-1)Ca(OH)(2)未显示出矿化,但它们在用较高浓度的Ca(2)(0.25)培养时表现出矿化。(2)(0.25 mgml(-1))。在0.25mgmL(-1)Ca(OH)(2)的存在下诱导的矿化在pH 7.4的pH 7.4中大于pH8.5。在中性条件下观察到的高矿化活性是由P38和JNK的长期激活引起的。羟基离子对矿化没有任何影响。结果表明,从Ca(OH)(2)中解离的钙离子对于诱导成骨细胞的矿化至关重要。

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