Genetic analysis of impaired healing responses after periodontal therapy in type 2 diabetes: Clinical and in vivo studies.

Autor:	Nakagawa, Keita, Watanabe, Kazuki, Mizutani, Koji, Takeda, Kohei, Takemura, Shu, Sakaniwa, Eri, Mikami, Risako, Kido, Daisuke, Saito, Natsumi, Kominato, Hiromi, Hattori, Atsuhiko, Iwata, Takanori
Předmět:	PERIODONTAL disease treatment WOUND healing BIOLOGICAL models RESEARCH funding T-test (Statistics) DATA analysis GENETIC markers FISHER exact test TREATMENT effectiveness IN vivo studies DESCRIPTIVE statistics GENE expression RATS IMMUNOHISTOCHEMISTRY TYPE 2 diabetes ANIMAL experimentation GENE expression profiling ANALYSIS of variance STATISTICS DATA analysis software DISEASE complications
Zdroj:	Journal of Periodontal Research; Aug2024, Vol. 59 Issue 4, p712-727, 16p
Abstrakt:	Objective: This study aims to investigate the mechanisms underlying the impaired healing response by diabetes after periodontal therapy. Background: Outcomes of periodontal therapy in patients with diabetes are impaired compared with those in patients without diabetes. However, the mechanisms underlying impaired healing response to periodontal therapy have not been sufficiently investigated. Materials and Methods: Zucker diabetic fatty (ZDF) and lean (ZL) rats underwent experimental periodontitis by ligating the mandibular molars for one week. The gingiva at the ligated sites was harvested one day after ligature removal, and gene expression was comprehensively analyzed using RNA‐Seq. In patients with and without type 2 diabetes (T2D), the corresponding gene expression was quantified in the gingiva of the shallow sulcus and residual periodontal pocket after non‐surgical periodontal therapy. Results: Ligation‐induced bone resorption and its recovery after ligature removal were significantly impaired in the ZDF group than in the ZL group. The RNA‐Seq analysis revealed 252 differentially expressed genes. Pathway analysis demonstrated the enrichment of downregulated genes involved in the peroxisome proliferator‐activated receptor (PPAR) signaling pathway. PPARα and PPARγ were decreased in mRNA level and immunohistochemistry in the ZDF group than in the ZL group. In clinical, probing depth reduction was significantly less in the T2D group than control. Significantly downregulated expression of PPARα and PPARγ were detected in the residual periodontal pocket of the T2D group compared with those of the control group, but not in the shallow sulcus between the groups. Conclusions: Downregulated PPAR subtypes expression may involve the impaired healing of periodontal tissues by diabetes. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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