The Role of Platelet TLRs in Platelet Activation During VTE
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 44
- 试验地点
- 2
- 主要终点
- expression of TLR2/ TRL4
研究概览
简要总结
Venous thromboembolic disease (VTE) is a frequent and potentially serious pathology. Therapeutic management has improved considerably over the last few decades, enabling the application of codified management in line with the recently updated French management recommendations.
One of the main remaining difficulties concerns VTE sequelae, mainly post-thrombotic syndrome after deep vein thrombosis, and post-pulmonary embolism syndrome after pulmonary embolism. The mechanisms leading to the absence of complete repermeabilization of vessels affected by Venous thromboembolic disease (VTE) are still poorly understood.
The concept of immunothrombosis, closely associating immunity, inflammation and thrombosis, could (in part) explain the appearance of these sequelae. Platelets appear to play a key role in the onset of sequelae: Platelets are known to be involved both in the onset of a VTE episode and in the inflammatory response. This involvement is illustrated by the expression of inflammatory receptors such as TLR (toll-like receptor) 2 and TLR4.
Th aim to investigate the role of platelets in the occurrence of sequelae, mainly via their role in the inflammatory response, in Venous thromboembolic disease (VTE) patients.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 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
- 否
入选标准
- •Patients diagnosed with Venous ThromboEmbolic (VTE) / Proximal Deep vein thrombosis (DVT) of the lower limb and/or pulmonary embolism ≤ 72heures
- •Patients are 18 years of age or older at diagnosis.
- •Patients received informed written consent
- •Patients benefiting from social security coverage
排除标准
- •Diagnosis of Venous ThromboEmbolic (VTE) more than 72 hours old
- •Isolated sub-segmental pulmonary embolism
- •Patients on antiplatelet agents
- •Patients on non-steroidal anti-inflammatory drugs (NSAIDs)
- •Life expectancy > 3 months
研究组 & 干预措施
Venous ThromboEmbolic (VTE) patients
a diagnosis of Venous ThromboEmbolic (VTE) less than 72 hours old at inclusion, with a follow-up of 3 to 6 months
干预措施: blood sample (Biological)
结局指标
主要结局
expression of TLR2/ TRL4
时间窗: at day1 and at 6 months
The characteristic membrane profile of the inflammatory role of platelets is quantified by TLR2/TLR4 receptors expression using flow cytometry. This profile will be compared between patients with VTE sequelae (objectified during follow-up, and defined in accordance with good practice recommendations) 20,21 and patients without VTE sequelae. o A patient with sequelae corresponds to patients who will present during follow-up with a post-thrombotic syndrome (defined by a Villalta score greater than or equal to 5) and/or a post-pulmonary post-pulmonary embolism syndrome (defined by NYHA stage II, III or IV dyspnea, and the presence of perfusion perfusion sequelae on lung scintigraphy).
次要结局
- Analysis of characteristic soluble profile of the inflammatory role of platelets(at day1 and at 6 months)