在牙周炎中衰老的分子特征:临床见解
K Rattanaprukskul1,2, X-J Xia1, M Jiang1
1Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Journal of dental research
|June 15, 2024
概括
细胞衰老,衰老的标志,驱动炎症和疾病. 这项研究在牙周炎组织中发现了老化标志物和炎症媒介的增加,这表明老化有助于口腔疾病的进展.
科学领域:
- 口腔生物学 口腔生物学
- 细胞衰老 细胞衰老
- 免疫学 免疫学 免疫学
背景情况:
- 牙周病在全球范围内影响着大量老年人群.
- 细胞衰老,一个关键的衰老过程,与慢性疾病和炎症 (炎症) 有关.
- 衰老细胞释放的因素 (衰老相关的分泌表型 - SASP) 损害了周围的组织.
研究的目的:
- 为了研究老化标志物和炎症媒介在健康与牙周炎受影响的牙组织.
- 为了确定衰老是否有助于口腔粘膜的病理变化.
主要方法:
- 在牙活检中评估了衰老标志物 (p16,脂素,β-银酸酶) 和炎症媒介物 (IL-1β,IL-6,IL-8,MMP-1,MMP-3,TNF-α).
- 使用双色染色来识别阳性衰老标记的细胞类型.
- 跨年龄组的健康和牙周炎部位之间的标志物水平比较.
主要成果:
- 与健康组织相比,牙周炎组织的p16,脂素和β-银酸酶水平显著更高.
- 即使在年轻的牙周炎患者中也观察到老化标记的增加,这表明牙周炎的早期发病.
- 在患病组织中的纤维细胞和巨细胞中,β-galactosidase显著丰富.
- 与SASP相关的炎症媒介在牙周炎病变中升高.
结论:
- 这项研究提供了第一个临床证据,证明了牙周炎影响的牙组织中老化和炎症分泌的增加.
- 老化被认为是口腔粘膜病理事件的关键驱动因素.
- 这些发现表明,衰老是治疗牙周病的新型治疗干预措施的潜在目标.
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