Immunosuppressive Effects of Smoking and HIV-1 on the Development of Lung Disease.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 210
- 试验地点
- 1
- 主要终点
- The change in immunoregulatory markers: PD-1 expression and interleukin (IL)-10 production by alveolar macrophages (AMs) from baseline to week 24.
研究概览
简要总结
This study plans to learn more about pulmonary complications of human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS). Even though antiretroviral therapy (ART) has dramatically decreased the number of opportunistic infections and deaths in HIV infected patients, pulmonary complications (including chronic obstructive pulmonary disease (COPD) development and pneumonias resulting in decreased lung function) of HIV/AIDS continue to be a major cause of morbidity and mortality in this population. The mechanisms underlying the increased risk of COPD and decreased lung function in HIV infected individuals is not well understand and needs to be studied.
The investigators hypothesize that the immunoregulatory consequences and immunosuppressive lung milieu secondary to HIV and cigarette smoke combine to increase the risk of lung infection and injury in HIV infected smokers, hastening the development of COPD. The mechanisms will be directly tested using blood and bronchial alveolar lavage (BAL) cells from smokers and nonsmokers with and without HIV infection.
详细描述
The first component of this study will be a longitudinal, prospective, 24 weeks study of the effects of HIV-1 infection on innate and acquired immunity in the lung (Cohort A). The second component of this study will be a cross-sectional, case-control study of lung function and immune dysregulation of HIV-1 infected persons on long-term ART (Cohort B).
Cohort A will consist of 120 subjects, stratified by HIV-1 and smoking status
Cohort B will consist of 90 subjects stratified by chronic obstructive pulmonary disease (COPD) and HIV-1 infection.
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 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- 未提供
排除标准
- 未提供
结局指标
主要结局
The change in immunoregulatory markers: PD-1 expression and interleukin (IL)-10 production by alveolar macrophages (AMs) from baseline to week 24.
时间窗: Baseline, Week 24
Evaluate the immunoregulatory change between HIV positive (smokers/non-smokers) and HIV negative (smokers/non-smokers)
PD-1 expression and IL-10 production by AMs at baseline
时间窗: Baseline
Evaluate the association of PD-1 expression and IL-10 production by AMs after long-term antiretroviral therapy (ART) with abnormal lung function and a COPD phenotype between HIV positive (with and without COPD) and HIV negative with COPD.
次要结局
未报告次要终点