E-cigarettes and perturbations in the subgingival ecosystem

电子烟和龈下生态系统的扰动

• 批准号: 10690240
• 负责人: Purnima Kumar
• 金额: $ 58.69万
• 依托单位: UNIVERSITY OF MICHIGAN AT ANN ARBOR
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2024-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10690240
• 关键词: cigarettes; perturbations; subgingival; ecosystem

Despite having been introduced ten years ago, little is known of the impact of electronic nicotine delivery systems (ENDS or e-cigarettes or e-cigs) on human health. ENDS usage is rapidly rising among adolescents and young adults and this is partially due to a perception that e-cigs are safer than cigarettes and other nicotine replacement therapies. However, these products vary widely in nicotine content, propylene glycol, glycerol, additives and flavorings; all of which are poorly studied. Therefore, there is an urgent need for biological investigations that will improve our understanding of how ENDS impact human health. The initial point of contact of ENDS, and the first-affected system in humans is the oral cavity. It is known that nicotine impacts oral health, acting as a cytotoxic agent as well as increasing virulence of certain bacteria. Oral health is dependent upon an intricate balance between the microbial ecosystem and host immunity. Based on our preliminary studies that ENDS alter the compositional structure and the functional potential of the oral ecosystem, we hypothesize that e-cigs will impact this microbial-mucosal homeostasis. We propose to test this hypothesis by combining novel clinical study designs with integrated `-omics' approaches and computational bioinformatics. This approach will bridge the gap between purely clinical outcome-based studies, in vitro investigations and in vivo investigations using animal models. First, the biological effects of different formulations of ENDS on an in vitro model of the oral host-microbial interactome will be examined through dual transcriptome-metatranscriptome sequencing. Second, we will observe the effects of ENDS on host-bacterial interactions over time by combining a multi-arm, longitudinal clinical study with a network analysis algorithm. The proposed studies will bring us closer to understanding the role of ENDS in disrupting oral ecological homeostasis, provide biologically-validated timelines for assessing risk associated with ENDS use, and develop indicators or predictors of exposure.

尽管是十年前引入的，但对电子尼古丁的影响知之甚少 关于人类健康的输送系统（末端或电子烟或电子烟）。结束用法之间正在迅速上升 青少年和年轻人，这部分是由于人们认为电子烟比香烟更安全 其他尼古丁替代疗法。但是，这些产品在尼古丁含量，丙烯方面差异很大 甘油，甘油，添加剂和调味剂；所有这些研究都很少。因此，迫切需要 生物学调查将提高我们对目的的理解影响人类健康。最初 末端的接触点以及人类的第一个影响系统是口腔。众所周知尼古丁 影响口腔健康，充当细胞毒性剂，并增加某些细菌的毒力。口腔健康 取决于微生物生态系统和宿主免疫之间的复杂平衡。基于我们 结束的初步研究改变了组成结构和口服的功能潜力 生态系统，我们假设电子烟会影响这种微生物 - 粘膜稳态。我们建议对此进行测试 假设通过将新颖的临床研究设计与集成的“ - 组学”方法和计算相结合 生物信息学。这种方法将弥合纯粹基于临床结果的研究，体外 使用动物模型进行研究和体内研究。首先，不同的生物学作用 在口服宿主 - 微生物相互作用组的体外模型上末端的表述将通过双重检查 转录组 - 金属标记测序。其次，我们将观察末端对宿主 - 细菌的影响 通过将多臂纵向临床研究与网络分析算法相结合，随着时间的推移相互作用。 拟议的研究将使我们更加了解目的在破坏口腔生态学中的作用 稳态，提供生物学验证的时间表来评估与目的使用相关的风险， 开发暴露的指标或预测指标。

项目成果

Impact of surface characteristics on the peri-implant microbiome in health and disease.

表面特征对健康和疾病中种植体周围微生物组的影响。

• DOI: 10.1002/jper.23-0205
• 发表时间: 2024
• 期刊: Journal of periodontology
• 影响因子: 4.3
• 作者: Sinjab,Khaled;Sawant,Shriya;Ou,Alice;Fenno,JChristopher;Wang,Hom-Lay;Kumar,Purnima
• 通讯作者: Kumar,Purnima