Curcumin reduces inflammation in rat apical periodontitis

Area of Science:

• Oral health research
• Pharmacology
• Immunology

Background:

• Apical periodontitis (AP) is an inflammatory condition.
• Systemic inflammation can influence AP severity.
• Curcumin exhibits anti-inflammatory properties.

Purpose of the Study:

• To investigate the impact of systemic curcumin on the severity of experimental apical periodontitis in rats.
• To assess curcumin's effects on inflammatory markers and bone resorption in AP.

Main Methods:

• Wistar rats were divided into control and AP groups, with and without curcumin treatment.
• Curcumin was administered orally before and after inducing AP.
• Micro-CT, H&E staining, and immunohistochemistry were used to evaluate inflammation, cytokine levels (TNF-α, IL-6, IL-1β), and bone remodeling markers (TRAP, OCN).

Main Results:

• Curcumin treatment did not significantly alter bone resorption (Micro-CT, OCN).
• AP-curcumin group showed significantly lower inflammatory cell infiltration and reduced levels of TNF-α, IL-6, and IL-1β compared to the AP group.
• The number of TRAP-positive cells, indicative of bone resorption, was significantly lower in the AP-curcumin group.

Conclusions:

• Systemic curcumin administration effectively mitigated the inflammatory response in experimental apical periodontitis.
• Curcumin demonstrates potential as an anti-inflammatory agent in managing AP.
• Further research may explore curcumin's therapeutic role in AP treatment.