Analysis of Neutrophil Response in Chronic Periodontitis (Including the Project Entitled 'Pro-Inflammatory Cytokine Production by Neutrophils in Periodontitis Patients')
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Principal Research Question
研究概览
简要总结
Recent scientific evidence suggests that the main defence cell of the body (neutrophil) behaves in a different manner in patients with gum disease; namely how they interact with bacteria and their role in defence systems of the body. This study proposes to examine these responses in periodontitis patients and healthy controls.
The proposed study will include patients undergoing periodontal (gum) treatment who will be matched to periodontally healthy controls. Blood, gingival crevicular (gum) fluid and clinical measures will be collected both pre- and post-therapy to measure differences in cell behaviour both before, and following routine therapy.
Blood samples will be used to isolate peripheral blood neutrophils prior to analysis of their responses to different bacterial stimuli including oxygen radical, cytokine and extracellular trap release. Gingival Crevicular Fluid samples will be used to measure different biochemical markers that result from the production of Neutrophil Extracellular Traps (NETs). Routine clinical measures will be taken both pre- and post-therapy as a measure of treatment response.
Patient volunteers undergoing treatment will be asked to donate a total of four small samples of tissue from the gums whilst they are already anaesthetised for routine treatment. These will be approximately the size of a needle head (2mm2mm) and used to examine NET formation within the tissues and related processes. This will provide novel in-vivo data regarding this recently discovered method of neutrophil defence in innate immunity.
This proposal represents a novel study aimed at improving our current understanding of why inflammatory periodontitis develops in some patients but not others, as well as providing pointers to causal/noncausal relationships between periodontitis and important systemic conditions such as diabetes and rheumatoid arthritis.
Ultimately, novel treatment approaches and primary prevention (for periodontitis) or secondary prevention (for systemic disease) strategies may emerge.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Be aged 18 or over
- •Have a minimum of 20 teeth
- •Have chronic periodontitis or otherwise healthy volunteers (controls)
- •Be capable of giving informed consent themselves and are able and willing to participate in the study
排除标准
- •Patients with aggressive disease
- •Mouthwash use
- •Special dietary needs (e.g. coeliac)
- •Patients with physical or mental disability
- •Pregnant women or those breastfeeding
- •Patients whose medical history may place them at risk of complications from periodontal therapy (e.g. warfarinised volunteers)
- •Patients taking long term anti-microbial or anti-inflammatory drugs
- •Patients unable or unwilling to provide informed consent
- •Taking dietary supplements (e.g. multivitamins, antioxidants, fish oils)
- •Shows unwillingness, inability or lack of motivation to carry out the study procedures, or cannot conform to the protocol
- •A course of antibiotic or anti-inflammatory therapy currently or in the previous 3 months
- •Current orthodontic treatment (e.g. wearing braces or orthodontic devices)
- •Currently participating in another dental trial
- •Diabetics
- •Smokers or have smoked up to within 5 years
- •Those patients who disclose previous or current recreational drug use
结局指标
主要结局
Principal Research Question
时间窗: Three months for each matched patient and control
Do leukocyte (neutrophil) responses differ between patients diagnosed with periodontitis compared to matched healthy controls, and what is the effect of standard periodontal treatment and stabilisation on this response?
次要结局
- Secondary Research Question(Three months for each matched patient and control)
研究者
Professor I Chapple
Professor (PI)
Birmingham Community Healthcare NHS