Periodontitis Clinical Trial
Official title:
PPAR-γ, RXR, and VDR Expressions in Gingival Tissue Samples of Healthy Individuals, Periodontitis and Peri-implantitis Patients
ABSTRACT Objective: Periodontitis and peri-implantitis are the irreversible destructive
diseases of the periodontal and peri-implant tissues. The present study aimed to determine
the receptor expressions of Peroxisome proliferative-activated receptor (PPAR)-γ, Retinoid X
receptor (RXR)-α, and Vitamin D receptor (VDR) in the diseased tissues around teeth and
dental implants.
Methods: The study consisted of three groups as group 1; healthy controls (C, n=15), group 2;
periodontitis patients with stage 3 grade B (P, n=15), and group 3; peri-implantitis patients
(PI, n=15). Periodontal clinical parameters as the plaque index (PI), gingival index (GI) and
clinical attachment levels (CAL) were recorded. Gingival biopsies were obtained from all
participants and biopsy samples underwent histological tissue processing. Hematoxylin-eosin
(H&E) and immunohistochemistry staining were performed. Total inflammatory cell counts and
fibroblast cell density were evaluated on H&E-stained slides while PPAR-γ, RXR-α, and VDR
were evaluated via immunohistochemistry.
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