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Antimicrobial peptide gene expression in periodontitis patients: A pilot study
Marie-Laure Jourdain1,2,3, Loïc Pierrard2,3,4, Lukshe Kanagaratnam3,4
1EA 4691 Biomatériaux et inflammation en site osseux (BIOS), SFR CAP-Santé (FED 4231), Université de Reims-Champagne-Ardenne, Reims, France.
Journal of Clinical Periodontology
|February 16, 2018
Summary
Antimicrobial peptides (AMPs) are key to innate immunity and may play a role in periodontal disease. Gingival smears revealed that lower expression of alpha-defensin 4 (DEFA4) may indicate periodontitis.
Area of Science:
- Immunology
- Oral Biology
- Genetics
Background:
- Antimicrobial peptides (AMPs) are crucial innate immune components.
- AMPs may be involved in the pathogenesis of periodontal disease.
Purpose of the Study:
- To investigate differences in AMP-coding gene expression in periodontitis patients versus healthy individuals.
- To assess the utility of gingival smears for AMP gene expression analysis.
Main Methods:
- Recruited 23 patients (12 chronic periodontitis, 11 healthy).
- Obtained gingival smears for mRNA purification.
- Utilized reverse transcription-quantitative PCR (RT-qPCR) to analyze gene expression of 15 AMPs.
Main Results:
- Histatin 3 (HTN3), alpha-defensin 4 (DEFA4), and lysozyme C (LYZ) showed differential expression between groups.
- Higher relative expression of DEFA4 was associated with a protective effect against periodontitis.
Conclusions:
- Gingival smears combined with RT-qPCR are a viable method for assessing AMP gene expression.
- Reduced DEFA4 expression may serve as a potential biomarker for periodontitis.
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