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  • Title: Influence of bisphosphonates on endothelial cells, fibroblasts, and osteogenic cells.
    Author: Walter C, Klein MO, Pabst A, Al-Nawas B, Duschner H, Ziebart T.
    Journal: Clin Oral Investig; 2010 Feb; 14(1):35-41. PubMed ID: 19294435.
    Abstract:
    Bisphosphonate-associated osteonecrosis of the jaws (BP-ONJ) is a side effect primarily in patients receiving highly potent nitrogen-containing bisphosphonates. The exact etiopathology is unknown. In addition to reduced bone remodeling, there may also be an impact on soft tissues. The impact of nitrogen- (ibandronate, pamidronate, zoledronate) and non-nitrogen-containing bisphosphonates (clodronate) on human umbilicord vein endothelial cells (HUVEC), fibroblasts and osteogenic cells was analyzed employing cell viability testing and a scratch wound assay. The impact on the cell morphology of vital-stained osteogenic cells was investigated by cell visualization (confocal laser scanning microscopy). Pamidronate and zoledronate had the greatest negative impact on all cell lines, whereas the impact of ibandronate and clodronate was less distinct. The effect of clodronate on HUVEC and fibroblasts was particularly marginal. BP-ONJ could be a multifactorial event with multicellular impairments. This might result in altered wound healing. The increased impact of the highly potent bisphosphonates, particularly on non-bone cells, may explain the higher occurrence of BP-ONJ.
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