Effect of Tetrahydrocannabinol (THC) on Sleep in Humans
试验速览
- 阶段
- 早期 1 期
- 状态
- 已完成
- 入组人数
- 18
- 试验地点
- 1
- 主要终点
- Sleep Stages
研究概览
简要总结
The investigators will test the effects of 10-60mg dronabinol (oral THC) on sleep in non-frequent and frequent cannabis users.
详细描述
The investigators plan to test the effects of 10-60 mg dronabinol (oral THC) on subjective (surveys) and objective (polysomnographically scored (PSG)) sleep in non-frequent and frequent cannabis users following an acclimation and baseline night of sleep. The mornings after baseline sleep and dronabinol administration, cognitive performance will also be measured and participants may also perform morning typical behaviors such as change in posture (getting out of bed/tilt test) and mild intensity physical activity. This pilot study is in healthy young adults without a history of chronic disease.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 21 Years 至 34 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Frequent Cannabis Use (>3x/week for the prior 3 months) or
- •No Cannabis Use (Less than 10x ever)
排除标准
- •Sleep Apnea
- •Pregnancy
- •Cardiovascular disease
- •Chronic Pain
- •History of seizures
- •Severe Hepatic impairment
- •Conditions associated with clinically relevant cognitive impairment
- •Symptoms of acute or active illness (e.g., fever and leukocytosis)
- •Evidence of psychopathology on the Beck Depression Index II (BDI-II or in a structured clinical interview with a physician
- •History of severe psychiatric illnesses (including such as alcoholism, drug dependency including a cannabis use disorder score ≥12 on the Cannabis Use Disorders Identification Test (CUDIT) (28) or >1 withdrawal symptom on the Marijuana Withdrawal Checklist (MWC (29)) , major depression, manic depressive illness, schizophrenic disorders, panic disorder, generalized anxiety disorder, post-traumatic stress disorder, agoraphobia, claustrophobia, paranoid personality disorder, schizoid personality disorder, schizotypal personality disorder, borderline personality disorder, and antisocial personality disorder.)
- •History of having been treated with antidepressants, neuroleptic medications, or tranquilizers.
- •Volunteers must be drug-free (including caffeine, nicotine, alcohol and herbal medications) for the duration of the screening and study period (with the exception of THC), with no dependence on drugs (e.g. cocaine, opioids, amphetamine, methamphetamine, PCP, benzodiazepines, barbiturates, methadone, MDMA); or alcohol dependency.
- •Current Nicotine use ( or history of more than 5 'pack years' of smoking)
- •Current use of prescription or over the counter medications
- •History of shift work in the last 6 months
- •Travel across >2 time zones during the month prior to the study
- •Habitual bedtime after 1am or waketime before 5am
研究组 & 干预措施
Non Cannabis Users
Non-cannabis users (who have not used cannabis more than 10 times in their lifetime) will undergo the same single dose dronabinol and placebo as the frequent cannabis user arm, under the identical study procedure.
干预措施: Dronabinol (Drug)
Frequent Cannabis Users
Subjects categorized as frequent cannabis users (>3x/week for 3 months) will receive a single dose of 10-60mg dronabinol on the second or third night of their stay in the clinical laboratory, one hour prior to bedtime and five minutes after completion of a study snack. The other night, participants will receive a placebo.
Dronabinol is an orally active, synthetic THC currently indicated for weight loss in patients with acquired immune deficiency syndrome (AIDS) or anorexia and for nausea and vomiting associated with cancer. Dronabinol is nearly absorbed (90%-95%) after a single oral dose of the capsule formulation with 10-20% of the administered dose researching the systemic circulation due to extensive first-pass hepatic metabolism and high lipid solubility. The onset of action is ~30 to 60 minutes with peak effects from 2-4-h following dose (Fig. 2) (34). The 10-60mg of dronabinol will be administered by OHSU's research pharmacy services.
干预措施: Dronabinol (Drug)
结局指标
主要结局
Sleep Stages
时间窗: Over the 3-night stay.
Polysomnographic recordings will be measured and scored across the three sleep periods for timing and sleep stages.
Mean Change in Response Accuracy for Paced Auditory Serial Addition Test Across Four Day Inpatient Stay
时间窗: Over the 3-night stay.
Processing speed and working memory (response accuracy) will be measured shortly after awakening each test morning. Scores can range from a minimum of 0 to 60 correct responses with each test.
Mean Change in Response Accuracy for Word Recall Across Four Day Inpatient Stay
时间窗: Over the 3-night stay.
Verbal memory will be measured shortly after awakening each test morning. Scores can range from recalling 0 words to the complete list. Participants are blinded as to list length.
Endothelial Function
时间窗: Over the 3-night stay.
Endothelial Function will be measured as Flow Mediated Dilation in the brachial artery 10 minutes after each awakening and 20 minutes before each sleep period.
Psychomotor Vigilance Change Across Four Day Inpatient Stay
时间窗: Over the 3-night stay.
Psychomotor vigilance response times (in milliseconds) will be measured shortly after awakening each test morning.
Blood pressure
时间窗: Over the 3-night stay.
Blood pressure (BP) will be measured every 30 min during wake and every 15 minutes during sleep. Beat-by-beat (BP) will be measured during sleep using a non-invasive device employing the volume-clamp method with hydrostatic correction (BMeye Nexfin or AD Instruments NIBP). Additionally an automated calibrated sphygmomanometer will be used to record sporadic BP at intervals during an exercise challenge.
Heart Rate
时间窗: Over the 3-night stay.
For the duration of the study, 2 channels of EKG are recorded (RA-V6) and stored at a sample frequency of 256 Hz. This software will be used for peak detection (R-wave detection and subsequent heart rate variability (HRV) analysis to estimate cardiac vagal tone).
Mean changes in Intoxication Levels on the Visual Analog Scale
时间窗: Over the 3-night stay.
Assessed by visual analog scale (Minimum=0, Maximum=100). 0 is "Not at all" and 100 is "Extremely". Questions ask about feeling drug effect, high right now, and wanting more of the study drug.
次要结局
- Caloric Intake(Over the 3-night stay.)
- Subjective measures of sleepiness/alertness(Over the 3-night stay.)
研究者
Nicole Bowles
Assistant Professor, Oregon Institute of Occupational Health Sciences
Oregon Health and Science University