Denosumab-associated osteonecrosis of the jaw affects osteoclast formation and differentiation: Pathological features of two cases

Medication-related osteonecrosis of the jaw (ONJ) is caused by antiresorptive (bisphosphonates and denosumab) and antiangiogenic agents, with the first report of denosumab-related ONJ emerging in 2010. To date, although certain case reports on denosumab-related ONJ have been published, those of ONJ...

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Veröffentlicht in:Molecular and clinical oncology 2016-02, Vol.4 (2), p.191-194
Hauptverfasser: MATSUSHITA, YUKI, HAYASHIDA, SAKI, MORISHITA, KOTA, SAKAMOTO, HIROSHI, NARUSE, TOMOFUMI, SAKAMOTO, YUKI, YAMADA, SHIN-ICHI, YANAMOTO, SOUICHI, FUJITA, SHUICHI, IKEDA, TOHRU, UMEDA, MASAHIRO
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container_issue 2
container_start_page 191
container_title Molecular and clinical oncology
container_volume 4
creator MATSUSHITA, YUKI
HAYASHIDA, SAKI
MORISHITA, KOTA
SAKAMOTO, HIROSHI
NARUSE, TOMOFUMI
SAKAMOTO, YUKI
YAMADA, SHIN-ICHI
YANAMOTO, SOUICHI
FUJITA, SHUICHI
IKEDA, TOHRU
UMEDA, MASAHIRO
description Medication-related osteonecrosis of the jaw (ONJ) is caused by antiresorptive (bisphosphonates and denosumab) and antiangiogenic agents, with the first report of denosumab-related ONJ emerging in 2010. To date, although certain case reports on denosumab-related ONJ have been published, those of ONJ caused by a single application of the drug are scarce. In addition, only one report described the histopathological features of this condition, although not completely; only the sequestrum resected by conservative surgery was evaluated. Although conservative treatment is recommended, the effectiveness of extensive surgery in the early stages of bisphosphonate-related ONJ has been described in recent years. Here we report the clinical and histopathological features of denosumab-related ONJ caused by single application of the drug, which was treated by extensive surgery in two patients. Histopathological analysis revealed a decreased number of osteoclasts in viable bone around the sequestrum, and these appeared morphologically immature, as indicated by the presence of very few nuclei. These findings are different from those for bisphosphonate-related ONJ and may assist in elucidating the mechanism underlying denosumab-related ONJ. Furthermore, extensive surgery may be effective for the management of this condition.
doi_str_mv 10.3892/mco.2015.696
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source Spandidos Publications Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central
subjects Analysis
bisphosphonate osteonecrosis
Bones
Cancer
cathepsin K
Cathepsins
Denosumab
Hospitals
Immunotherapy
Medical prognosis
medication-related osteonecrosis of the jaw
Metabolism
Metastasis
Monoclonal antibodies
Necrosis
Oncology
osteoclasts
osteocytes
Patients
Surgery
Targeted cancer therapy
title Denosumab-associated osteonecrosis of the jaw affects osteoclast formation and differentiation: Pathological features of two cases
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