Oxidative stress in bisphosphonate-related osteonecrosis of the jaws
Por:
Bagan J, Sáez GT, Tormos MC, Gavalda-Esteve C, Bagan L, Leopoldo-Rodado M, Calvo J and Camps C
Publicada:
1 may 2014
Resumen:
Objectives
To analyze whether oxidative stress (OS) changes are present in patients with bisphosphonate-related osteonecrosis of the jaw (BRONJ) versus controls.
Materials and Methods
Oxidative stress was analyzed in serum and unstimulated saliva of three groups: Group 1 consisted of 24 patients who had been treated with intravenous bisphosphonates (ivBPs) and developed BRONJ, group 2 consisted of 20 patients who had received ivBPs and did not develop BRONJ, and group 3 comprised 17 control subjects. Reduced glutathione (GSH), malondialdehyde (MDA), oxidized glutathione (GSSG), and 8-oxo-7,8-dihydro-2-deoxyguanosine (8-oxo-dG) levels, as well as the GSSG/GSH ratio, were measured.
Results
Mean serum and saliva levels of MDA, GSSG, and 8-oxo-dG and the GSSG/GSH ratio were significantly higher in patients with BRONJ than in controls. We found no significant difference in OS according to BRONJ stage, sex, or location in the jaws. Logistic regression analysis revealed that the GSSG/GSH ratio was a significant factor predicting the development of BRONJ (P=0.01).
Conclusions
Oxidative stress was detected in patients with BRONJ, and the GSSG/GSH ratio was the most significant OS variable found; it was a significant factor predicting the development of BRONJ.
Filiaciones:
Bagan J:
Department of Oral Medicine, Valencia University, Valencia, Spain
Service of Stomatology and Maxillofacial Surgery, University General Hospital, Valencia, Spain
|