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Iranian Journal of Basic Medical Sciences، جلد ۲۱، شماره ۹، صفحات ۹۰۵-۹۱۰
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عنوان انگلیسی In vitro assessment of alendronate toxic and apoptotic effects on human dental pulp stem cells
چکیده انگلیسی مقاله Objective(s): Osteonecrosis of the jaw, as an exposed necrotic bone in the oral cavity, is one of the adverse effects of bisphosphonates, which have an affinity for bone minerals. This study investigates the cytotoxic effects of alendronate (ALN) as a nitrogen-containing bisphosphonate, on human dental pulp stem cells (hDPSCs). Materials and Methods: The mesenchymal stem cells (MSCs), obtained from third molar tooth pulps were characterized by immunophenotyping assay in order to identify surface markers to evaluate their expression. To detect multipotency hDPSCs, they were differentiate into osteocytes and adipocytes. Cell proliferation was measured by MTT assay. PI staining of DNA fragmentation by flowcytometry (sub-G1 peak) was performed for determination of apoptotic cells and Bax, Bcl-2, and cleaved caspase 3 expressions. Protein expression was detected by Western blotting. Results: As the results revealed, ALN decreased viable cells (in 0.8–100 µM) after 72 hr and 168 hr (P< 0.001), significantly. ALN could lower cell proliferation in hDPSCs in a concentration and time-dependent manner. Sub-G1 peak as an indicator of flowcytometry histogram of treated cells by ALN, showed apoptosis was involved in ALN-induced cytotoxicity. Expressions of cleaved caspase 3 and Bax protein, as pro-apoptotic proteins, were increased and Bcl-2 protein as anti-apoptotic protein was decreased in response to increases in the concentration of ALN (0.8–25 µM).Conclusion: Long-term effects of ALN on cell proliferation and apoptosis in hDPSCs can result in either initiation or potentiation of ALN-induced osteonecrosis.
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نویسندگان مقاله | Solmaz Pourgonabadi
Department of Oral and Maxillofacial Surgery, Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran


| Ahmad Ghorbani
Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran


| zahra Tayarani najaran
Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran|Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran


| Seyed Hadi Mousavi
Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
نشانی اینترنتی http://ijbms.mums.ac.ir/article_11239.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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