Abstract
The inner mechanism of how diabetes affects dental pulp of patients with periodontitis has seldom been reported. We collected clinical samples and explored the influence of diabetes and periodontitis on the pathological change of dental pulp. Dental pulp from healthy individuals and patients with periodontitis with or without diabetes were collected based on strict inclusion and exclusion criteria. Dental pulp was morphologically observed; advanced glycation end products (AGEs) and lectin-like oxidized low-density lipoprotein receptor-1 (LOX1) were examined. Oxidative stress (OS), inflammatory indices, and apoptotic levels were assessed. Morphologically, fibrous structure in the dental pulp of patients with diabetic periodontitis (DP) group was sparse and disordered, and the blood vessel wall was thickened. Diabetes related indexes as AGEs and LOX1 were upregulated. Superoxide dismutase 2 expression was decreased, and OS level was increased. Matrix metalloproteinase 3 and other relevant proinflammatory cytokines levels were increased. The elevated OS and inflammation contributed to upregulation of apoptotic levels in DP group. Diabetes aggravates the pathological changes in the dental pulp of periodontitis patients possibly due to upregulated AGEs and LOX1. Our results highlight the importance of early oral intervention in patients with DP.
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