Oral Antimicrobial Peptides and Biological Control of Caries

被引:65
作者
Beverly A Dale
Renchuan Tao
Janet R Kimball
Richard J Jurevic
机构
[1] University of Washington,Dept. of Oral Biology
[2] Guangxi Medical University,Dept. of Oral Diagnosis
[3] University of Illinois at Chicago,undefined
关键词
Oral Cavity; Gingival Crevicular Fluid; Salivary Protein; Caries Experience; Caries Risk;
D O I
10.1186/1472-6831-6-S1-S13
中图分类号
学科分类号
摘要
The presence of antimicrobial peptides (AMPs) in saliva may be a biological factor that contributes to susceptibility or resistance to caries. This manuscript will review AMPs in saliva, consider their antimicrobial and immunomodulatory functions, and evaluate their potential role in the oral cavity for protection of the tooth surface as well as the oral mucosa. These AMPs are made in salivary gland and duct cells and have broad antimicrobial activity. Alpha-defensins and LL37 are also released by neutrophils into the gingival crevicular fluid. Both sources may account for their presence in saliva. A recent study in middle school children aimed to determine a possible correlation between caries prevalence in children and salivary concentrations of the antimicrobial peptides human beta-defensin-3 (hBD-3), the cathelicidin, LL37, and the alpha-defensins. The levels of these AMPs were highly variable in the population. While levels of LL37 and hBD-3 did not correlate with caries experience, the mean alpha-defensin level was significantly higher in children with no caries than in children with caries (p < 0.005). We conclude that several types of AMPs that may have a role in oral health are present in unstimulated saliva. Low salivary levels of alpha-defensin may represent a biological factor that contributes to caries susceptibility. Our observation could lead to new ways to prevent caries and to a new tool for caries risk assessment.
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