Response to Inflammatory Challenge in Major Depressive Disorder
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 64
- 试验地点
- 1
- 主要终点
- Change in Snaith-Hamilton Pleasure Scale (SHAPS)
研究概览
简要总结
LPS Challenge in Individuals with Major Depressive Disorder
详细描述
The aim of this project is to understand the biological differences between two distinct subtypes of depression, patients with and without inflammation as defined by c-reactive protein (CRP). Using a double-blinded, parallel group, placebo-controlled design, participants will be phenotyped before and after a low-dose lipopolysaccharide (LPS) challenge designed to perturb the immune system and trigger a transient, mild inflammatory response. This experimental design will allow for the delineation of the homeostatic mechanisms underlying sensitivity to inflammation-related depression. Low-dose LPS has been used by multiple groups to safely induce transient inflammatory responses in humans.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Depressed participants will be required to be in good general health (as evaluated during Visit 1, including EKG) and to be 18-55 years of age. Depressed participants will be required to have symptoms of depression (i.e. a PHQ-9 score ≥10) and be unmedicated for at least 3 weeks (8 weeks for fluoxetine) or treated with only one anti-depressant medication. Half the depressed participants (N=50) will be required to have a high-sensitivity C-Reactive Protein (CRP) score of ≥3 mg/L, and half the participants will be required to have a CRP score of ≤1 mg/L.
排除标准
- •Pregnancy
- •Previous history of fainting during blood draws.
- •Medical Conditions:
- •A history of a head injury with loss of consciousness.
- •Presence of co-morbid medical conditions not limited to but including cardiovascular (e.g., history of acute coronary event, stroke) and neurological diseases (e.g., Parkinson's disease), as well as pain disorders.
- •Presence of co-morbid inflammatory disorders such as rheumatoid arthritis or other autoimmune disorders.
- •Presence of an uncontrolled medical condition that is deemed by the investigators to interfere with the proposed study procedures, or to put the study participant at undue risk.
- •Presence of chronic infection that may elevate pro-inflammatory cytokines.
- •Presence of an acute infectious illness or receipt of a vaccination in the two weeks prior to an experimental session.
- •Psychiatric Disorders:
- •Current severe suicidal ideation or attempt within the past 12 months.
- •Psychosis
- •Bipolar disorder
- •Substance abuse or dependence within the previous 6 months
- •Age of onset of depression >40 years
- •Contraindications for MRI:
- •Severe claustrophobia
- •Bodily implants of unsafe paramagnetic materials such as pace-makers and aneurysm clips.
- •Medications:
- •Current and/or past regular use of hormone-containing medications (excluding contraceptives)
- •Current use of non-steroid anti-inflammatory drugs that is deemed by the investigators to potentially confound the results of the study
- •Current and/or past regular use of immune modifying drugs that target specific immune responses such as TNF antagonists
- •Current use of analgesics such as opioids or history of addiction to opioids or other analgesics
- •Current and/or past regular use of cardiovascular medications, including antihypertensive, antiarrhythmic, anti-anginal, and anticoagulant drugs (does not apply where medications are taken for different purpose e.g. anti-hypertensives for migraine).
- •Evidence of recreational drug use from urine test.
- •Lifetime use of methamphetamine
- •Health Factors:
- •BMI > 35 because of the effects of obesity on pro-inflammatory cytokine activity
- •Clinically significant abnormalities on screening laboratory tests
- •Abnormal EKG
- •In addition, participants who on arrival to the study, show any of the following symptoms will not be allowed to complete the study:
- •screening supine systolic blood pressure >140 mmHg or <100 mmHg
- •screening supine diastolic blood pressure >90 mmHg or <60 mmHg
- •12-lead EKG demonstrating a PR interval > 0.2 msec, QTc >450 or QRS >120 msec If the QTc exceeds 450 msec, or QRS exceeds 120 msec, the EKG will be repeated 2 more times and the median value will be used
- •pulse less than 50 beats/minute or greater than 100 beats/minute
- •temperature greater than 99.5F.
- •Non-English speaking participants:
- •The majority of the assessments proposed for this study have not been translated from English, thus, non-English speaking volunteers will be excluded.
研究组 & 干预措施
High CRP LPS Intervention
High CRP Individuals with Major Depressive Disorder receiving LPS intervention
干预措施: Lipopolysaccharide (Biological)
Low CRP LPS Intervention
Low CRP Individuals with Major Depressive Disorder receiving LPS intervention
干预措施: Lipopolysaccharide (Biological)
High CRP LPS Placebo
High CRP Individuals with Major Depressive Disorder receiving placebo
干预措施: Placebo (Biological)
Low CRP LPS Placebo
Low CRP Individuals with Major Depressive Disorder receiving placebo
干预措施: Placebo (Biological)
结局指标
主要结局
Change in Snaith-Hamilton Pleasure Scale (SHAPS)
时间窗: 2-hours
The SHAPS is a 14-item self-administered questionnaire, with each item scored from 1-4 (strongly agree through strongly disagree; range 14-56), with higher scores indicating greater anticipatory, not consummatory, anhedonia. Disagreement (i.e. score of 3 or 4) on at least three items is defined as indicating clinically significant anhedonia.
次要结局
- Change in Montgomery-Asberg Depression Rating Scale (MADRS)(24 hours)
- Change in Interleukin 10 (IL-10) Protein Levels(2-hours)
- Change in Tumor Necrosis Factor (TNF) Protein Levels(2-hours)
- Percent Signal Change in Blood Oxygenation Level Dependent Signal (BOLD) of the Insula (Interoceptive vs Exteroceptive Condition)(Baseline line 2-3 hours)
- Change in Interleukin 6 (IL-6) Protein Levels(2-hours)
- Percent Signal Change in Blood Oxygenation Level Dependent Signal (BOLD) of the Ventral Striatum Reward Versus No Reward Condition(Baseline line; 2-3 hours)
- Change in Temperature(4-hours)
研究者
Jonathan Savitz
Assistant Professor
Laureate Institute for Brain Research, Inc.