Brain-derived neurotrophic factor in chronic periodontitis

Area of Science:

• Neuroscience
• Periodontology
• Immunology

Background:

• Brain-derived neurotrophic factor (BDNF) is crucial for neuronal function and survival.
• BDNF is also found in non-neural tissues, including periodontal structures.
• Its role in periodontal disease remains largely uninvestigated.

Purpose of the Study:

• To investigate BDNF levels in periodontal tissues of patients with chronic periodontitis (CP) compared to healthy controls (HC).
• To analyze the association between BDNF gene polymorphisms (rs4923463 and rs6265) and CP.
• To explore correlations between BDNF, inflammatory markers, and periodontal status.

Main Methods:

• Periodontal tissues were obtained from 28 CP patients and 29 HC subjects.
• BDNF levels were measured using ELISA.
• Myeloperoxidase (MPO) activity and microscopic analysis were performed.
• Genotyping for BDNF polymorphisms rs4923463 and rs6265 was conducted.

Main Results:

• BDNF levels were significantly higher in CP patients than in HC subjects.
• A negative correlation was found between BDNF and IL-10 concentrations in inflamed tissues.
• No significant differences in BDNF genotype frequencies were observed between CP and HC groups.
• The BDNF GG genotype was associated with elevated BDNF, TNF-α, and CXCL10 levels in CP patients.

Conclusions:

• BDNF appears to be associated with the pathogenesis of periodontal disease.
• Specific BDNF genotypes may influence inflammatory responses in chronic periodontitis.
• Further research is needed to elucidate the precise role of BDNF in periodontal disease processes.