Establishing a Dual Murine Model to Explore the Interactions Between Diabetes and Periodontitis in Mice.

Publisher: MDPI Country of Publication: Switzerland NLM ID: 101092791 Publication Model: Electronic Cited Medium: Internet ISSN: 1422-0067 (Electronic) Linking ISSN: 14220067 NLM ISO Abbreviation: Int J Mol Sci Subsets: MEDLINE

Original Publication: Basel, Switzerland : MDPI, [2000-

Periodontitis*/pathology ; Periodontitis*/complications ; Periodontitis*/microbiology ; Periodontitis*/etiology ; Periodontitis*/metabolism ; Diabetes Mellitus, Experimental*/complications ; Diabetes Mellitus, Experimental*/pathology ; Disease Models, Animal*; Animals ; Male ; Mice ; Diet, High-Fat/adverse effects ; Porphyromonas gingivalis ; Mice, Inbred C57BL ; Alveolar Bone Loss/pathology ; X-Ray Microtomography ; Streptozocin ; Insulin Resistance ; Blood Glucose ; Bacteroidaceae Infections/complications ; Bacteroidaceae Infections/microbiology

This study aimed to develop and validate a dual murine model integrating a high-fat diet (HFD) and a single streptozotocin (STZ) dose to induce diabetes mellitus (DM), alongside periodontitis (Perio) induced by ligature placement and oral inoculation with Porphyromonas gingivalis ( P. gingivalis ). The goal was to mimic human pathological conditions, creating a physiologically relevant environment to study the interplay between DM and Perio. A total of 128 six-week-old male C57BL/6J mice were randomly divided into four groups: Control, DM, Perio, and DM-P. DM was induced by HFD and STZ injection, and Perio by ligature placement and P. gingivalis infection. Evaluations occurred at baseline and days 7, 14, and 21. Alveolar bone loss was assessed by micro-computed tomography, and inflammation was examined histologically. DM mice showed elevated glucose levels and insulin resistance. Perio and DM-P groups experienced significant bone loss compared with Control and DM groups. The morphometric analysis revealed abundant inflammatory cells and reduced collagen fibers in Perio and DM-P groups, especially at day 7. This dual murine model successfully replicated the key features of DM and Perio, maintaining overall health of the animals, and good tolerability by those subjects to the stress of both interventional procedures.

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2023/15750-7 Fundação de Amparo à Pesquisa do Estado de São Paulo; 2020/12788-5 Fundação de Amparo à Pesquisa do Estado de São Paulo; 2020/11639-6 Fundação de Amparo à Pesquisa do Estado de São Paulo; 2020/11651-6 Fundação de Amparo à Pesquisa do Estado de São Paulo; 2021/09434-0 Fundação de Amparo à Pesquisa do Estado de São Paulo; 2018/20719-3 Fundação de Amparo à Pesquisa do Estado de São Paulo; 306073/2020-0 National Council for Scientific and Technological Development; 306433/2023-0 National Council for Scientific and Technological Development

Keywords: diabetes mellitus; ligature; mouse model; periodontitis; streptozotocin

5W494URQ81 (Streptozocin)
0 (Blood Glucose)

Date Created: 20250626 Date Completed: 20250626 Latest Revision: 20250628

20250630

PMC12192739

10.3390/ijms26125611

40565075