实用医学杂志 ›› 2024, Vol. 40 ›› Issue (14): 1941-1946.doi: 10.3969/j.issn.1006-5725.2024.14.007

• 基础研究 • 上一篇    下一篇

富白细胞-血小板纤维蛋白在大鼠牙髓修复中的应用

王婷,何俐()   

  1. 十堰市人民医院(湖北医药学院附属人民医院)口腔科 (湖北 十堰 442000 )
  • 收稿日期:2023-07-29 出版日期:2024-07-25 发布日期:2024-07-15
  • 通讯作者: 何俐 E-mail:helrykq1122@126.com
  • 基金资助:
    湖北省卫生健康科研基金资助项目(WJ2021M054)

Application of leukocyte⁃and platelet⁃rich fibrin in dental pulp repair of rat

Ting WANG,Li. HE()   

  1. Department of Stomatology,Shiyan Renmin Hospital,Affiliated People′s Hospital,Hubei University of Medicine,Shiyan 442000,China
  • Received:2023-07-29 Online:2024-07-25 Published:2024-07-15
  • Contact: Li. HE E-mail:helrykq1122@126.com

摘要:

目的 探讨富白细胞-血小板纤维蛋白(leukocyte-and platelet-rich fibrin, L-PRF)作为盖髓剂对大鼠牙髓炎症调节的作用。 方法 脂多糖(LPS)构建牙髓炎大鼠模型,30只大鼠随机分成5组,即正常对照组、LPS造模组、iRoot BP PLUS组、L-PRF组、L-PRF + iRoot BP PLUS组。直接盖髓14 d后取标本行显微CT(Micro-CT)扫描、苏木精-伊红(HE)及Masson染色、定量实时聚合酶链式反应(qRT-PCR)检测,观察牙髓炎症及硬组织形成程度。 结果 Micro-CT示:LPS组未见硬组织形成,L-PRF组冠髓内可见斑块状钙化物,BP组及联合组在穿髓孔处见较完整的钙化桥。组织学染色示:LPS组炎症最重、无硬组织形成;联合组炎症最轻,硬组织形成最完整、连续,两组差异有统计学意义(P < 0.01);BP组与联合组的炎症及硬组织形成程度均差异无统计学意义(P > 0.05)。qRT-PCR结果示:各实验组牙髓组织中TNF-α、IL-1β、IL-6 mRNA相对表达水平相较于LPS组均有所降低,但L-PRF组与LPS组的差异无统计学意义(P > 0.05)。 结论 L-PRF联合iRoot BP PLUS作为复合盖髓材料,可用于大鼠牙髓炎牙髓组织修复以及牙髓炎症调节。

关键词: 富白细胞-血小板纤维蛋白, 牙髓炎, 直接盖髓, 炎症反应, 修复性牙本质

Abstract:

Objective To explore the effect of leukocyte-and platelet-rich fibrin (L-PRF) as a capping agent in the modulation of inflammation in rat dental pulp. Methods The rat model of pulpitis was established by lipopolysaccharide(LPS). A total of 30 Sprague-Dawley rats were randomly divided into five groups: Normal control group, Model group, iRoot BP PLUS group, L-PRF group, iRoot BP PLUS+ L-PRF group. Samples were collected on the 14th day after pulp capping. Micro-CT scans, HE and Masson staining,qRT-PCR assays were performed to observe pulp tissue inflammatory and hard tissue formation. Results Micro-CT results: no hard tissue formation was seen in the LPS group, plaque calculus was seen in the L-PRF group, and a more complete calcified bridge was seen at the perforation of the pulp in the BP and combined groups; HE and Masson staining results: the LPS group had the most severe inflammation and no hard tissue formation; the combined group had the least inflammation and the most complete and continuous hard tissue formation, and there was a statistical difference between the two groups(P < 0.01); There was no statistical difference in the degree of inflammatory reaction and hard tissue formation between the BP group and the combined group (P > 0.05);qRT-PCR results: the relative expression levels of TNF-α, IL-1β, and IL-6 mRNA in the pulp tissues of all experimental groups were reduced compared with those of the LPS group, but the differences between the L-PRF and LPS groups were not statistically significant (P > 0.05). Conclusion The combination of L-PRF and iRoot BP PLUS as a composite pulp capping material can be used for the repair of dental pulp tissue and the regulation of inflammation in dental pulpitis in rats.

Key words: leukocyte-and platelet-rich fibrin, pulpitis, direct pulp capping, inflammatory response, reparative dentin

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