search
Back to results

Pharmacokinetic and Pharmacodynamic Effects of Smoked and Vaporized Cannabis

Primary Purpose

Cannabis

Status
Completed
Phase
Phase 1
Locations
United States
Study Type
Interventional
Intervention
Cannabis
Sponsored by
Johns Hopkins University
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional basic science trial for Cannabis focused on measuring Cannabis, Toxicology, Intoxication

Eligibility Criteria

18 Years - 45 Years (Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  1. Have provided written informed consent
  2. Be between the ages of 18 and 45
  3. Be in good general health based on a physical examination, medical history, vital signs, 12-lead ECG and screening urine and blood tests
  4. Test negative for recent cannabis use in urine at the screening visit (confirmed by GC/MS laboratory test) and at clinic admission
  5. Test negative for other drugs of abuse, including alcohol at the screening visit and at clinic admission
  6. Not be pregnant or nursing (if female). All females must have a negative serum pregnancy test at the screening visit and a negative urine pregnancy test at clinic admission.
  7. Have a body mass index (BMI) in the range of 19 to 36 kg/m2
  8. Blood pressure at Screening Visit does not exceed a systolic blood pressure (SBP) of 150 mmHg or a diastolic blood pressure (DBP) of 90 mmHg

Exclusion Criteria:

  1. Non-medical use of psychoactive drugs other than, nicotine, alcohol, or caffeine 3 month prior to the Screening Visit;
  2. History of or current evidence of significant medical or psychiatric illness judged by the investigator to put the participant at greater risk of experiencing an adverse event due to exposure or completion of other study procedures.
  3. Use of an OTC, systemic or topical drug(s), herbal supplement(s), or vitamin(s) within 14 days of experimental sessions; which, in the opinion of the investigator or sponsor, will interfere with the study result or the safety of the subject.
  4. Use of a prescription medication (with the exception of birth control prescriptions) within 14 days of experimental sessions; which, in the opinion of the investigator or sponsor, will interfere with the study result or the safety of the subject.
  5. Use of hemp seeds or hemp oil in any form in the past 3 months.
  6. Use of dronabinol (Marinol) within the past 6 months.
  7. History of xerostomia (dry mouth), or the presence of mucositis, gum infection or bleeding, or other significant oral cavity disease or disorder that in the investigator's opinion may affect the collection of oral fluid samples.
  8. History of clinically significant cardiac arrhythmias or vasospastic disease (e.g., Prinzmetal's angina).
  9. Abnormal EKG result that in the investigator's opinion is clinically significant.
  10. Enrolled in another clinical trial or have received any drug as part of a research study within 30 days prior to dosing.

Sites / Locations

  • Johns Hopkins School of Medicine Behavioral Pharmacology Research Unit

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm 5

Arm 6

Arm Type

Experimental

Experimental

Experimental

Experimental

Experimental

Experimental

Arm Label

0mg THC smoked cannabis

10mg THC smoked cannabis

25mg THC smoked cannabis

0mg THC vaporized cannabis

10mg THC vaporized cannabis

25mg THC vaporized cannabis

Arm Description

placebo smoked cannabis

smoked cannabis containing 10mg THC

smoked cannabis containing 25mg THC

placebo vaporized cannabis

vaporized cannabis containing 10mg THC

vaporized cannabis containing 25mg THC

Outcomes

Primary Outcome Measures

Quantity of THC in blood
Quantitative measurement of blood THC by LC-MS/MS

Secondary Outcome Measures

Subjective rating of "Drug Effect"
Visual Analog Scale rating of subjective drug effect. Score ranges from 0 (none) to 100 (extreme) using a 100mm line anchored with none/extreme designation.
Psychomotor performance as assessed by Digit Symbol Substitution Task
Computerized version of Digit Symbol Substitution Task administered, total correct trials in 90-seconds measured
Memory performance as assessed by Paced Auditory Serial Addition Task
Computerized version of Paced Auditory Serial Addition Task administered, total correct trials out of 90 recorded
Performance on Divided Attention Task
Computerized Divided Attention Task administered, mean distance from central stimulus and number of targets correct out of 24 recorded

Full Information

First Posted
September 16, 2018
Last Updated
September 11, 2019
Sponsor
Johns Hopkins University
search

1. Study Identification

Unique Protocol Identification Number
NCT03676166
Brief Title
Pharmacokinetic and Pharmacodynamic Effects of Smoked and Vaporized Cannabis
Official Title
Pharmacokinetic and Pharmacodynamic Effects of Smoked and Vaporized Cannabis
Study Type
Interventional

2. Study Status

Record Verification Date
September 2018
Overall Recruitment Status
Completed
Study Start Date
June 16, 2016 (Actual)
Primary Completion Date
January 17, 2017 (Actual)
Study Completion Date
January 17, 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Johns Hopkins University

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
Few studies have been conducted to assess the pharmacokinetic and pharmacodynamic effects of smoked and vaporized cannabis. Careful analysis of different cannabis administration methods on these parameters is required to determine the level and duration of biological cannabinoid exposure and associated subjective, cardiovascular and cognitive effects. In the present study the investigators evaluated the detection of cannabinoids in whole blood, oral fluid, and urine, as well as the acute pharmacodynamics associated with smoked and vaporized cannabis among individuals who were not regular cannabis users. The outcomes of the study will extend scientific knowledge about the behavioral pharmacology and toxicology of smoked and vaporized cannabis administration and can inform policies regarding clinical, workplace and roadside drug testing programs.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Cannabis
Keywords
Cannabis, Toxicology, Intoxication

7. Study Design

Primary Purpose
Basic Science
Study Phase
Phase 1
Interventional Study Model
Crossover Assignment
Masking
ParticipantInvestigator
Allocation
Randomized
Enrollment
18 (Actual)

8. Arms, Groups, and Interventions

Arm Title
0mg THC smoked cannabis
Arm Type
Experimental
Arm Description
placebo smoked cannabis
Arm Title
10mg THC smoked cannabis
Arm Type
Experimental
Arm Description
smoked cannabis containing 10mg THC
Arm Title
25mg THC smoked cannabis
Arm Type
Experimental
Arm Description
smoked cannabis containing 25mg THC
Arm Title
0mg THC vaporized cannabis
Arm Type
Experimental
Arm Description
placebo vaporized cannabis
Arm Title
10mg THC vaporized cannabis
Arm Type
Experimental
Arm Description
vaporized cannabis containing 10mg THC
Arm Title
25mg THC vaporized cannabis
Arm Type
Experimental
Arm Description
vaporized cannabis containing 25mg THC
Intervention Type
Drug
Intervention Name(s)
Cannabis
Intervention Description
Inhaled cannabis
Primary Outcome Measure Information:
Title
Quantity of THC in blood
Description
Quantitative measurement of blood THC by LC-MS/MS
Time Frame
8 hours post exposure
Secondary Outcome Measure Information:
Title
Subjective rating of "Drug Effect"
Description
Visual Analog Scale rating of subjective drug effect. Score ranges from 0 (none) to 100 (extreme) using a 100mm line anchored with none/extreme designation.
Time Frame
8 hours post exposure
Title
Psychomotor performance as assessed by Digit Symbol Substitution Task
Description
Computerized version of Digit Symbol Substitution Task administered, total correct trials in 90-seconds measured
Time Frame
8 hours post exposure
Title
Memory performance as assessed by Paced Auditory Serial Addition Task
Description
Computerized version of Paced Auditory Serial Addition Task administered, total correct trials out of 90 recorded
Time Frame
8 hours post exposure
Title
Performance on Divided Attention Task
Description
Computerized Divided Attention Task administered, mean distance from central stimulus and number of targets correct out of 24 recorded
Time Frame
8 hours post exposure

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
45 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Have provided written informed consent Be between the ages of 18 and 45 Be in good general health based on a physical examination, medical history, vital signs, 12-lead ECG and screening urine and blood tests Test negative for recent cannabis use in urine at the screening visit (confirmed by GC/MS laboratory test) and at clinic admission Test negative for other drugs of abuse, including alcohol at the screening visit and at clinic admission Not be pregnant or nursing (if female). All females must have a negative serum pregnancy test at the screening visit and a negative urine pregnancy test at clinic admission. Have a body mass index (BMI) in the range of 19 to 36 kg/m2 Blood pressure at Screening Visit does not exceed a systolic blood pressure (SBP) of 150 mmHg or a diastolic blood pressure (DBP) of 90 mmHg Exclusion Criteria: Non-medical use of psychoactive drugs other than, nicotine, alcohol, or caffeine 3 month prior to the Screening Visit; History of or current evidence of significant medical or psychiatric illness judged by the investigator to put the participant at greater risk of experiencing an adverse event due to exposure or completion of other study procedures. Use of an OTC, systemic or topical drug(s), herbal supplement(s), or vitamin(s) within 14 days of experimental sessions; which, in the opinion of the investigator or sponsor, will interfere with the study result or the safety of the subject. Use of a prescription medication (with the exception of birth control prescriptions) within 14 days of experimental sessions; which, in the opinion of the investigator or sponsor, will interfere with the study result or the safety of the subject. Use of hemp seeds or hemp oil in any form in the past 3 months. Use of dronabinol (Marinol) within the past 6 months. History of xerostomia (dry mouth), or the presence of mucositis, gum infection or bleeding, or other significant oral cavity disease or disorder that in the investigator's opinion may affect the collection of oral fluid samples. History of clinically significant cardiac arrhythmias or vasospastic disease (e.g., Prinzmetal's angina). Abnormal EKG result that in the investigator's opinion is clinically significant. Enrolled in another clinical trial or have received any drug as part of a research study within 30 days prior to dosing.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Ryan Vandrey, PhD
Organizational Affiliation
Johns Hopkins School of Medicine Behavioral Pharmacology Research Unit
Official's Role
Principal Investigator
Facility Information:
Facility Name
Johns Hopkins School of Medicine Behavioral Pharmacology Research Unit
City
Baltimore
State/Province
Maryland
ZIP/Postal Code
21224
Country
United States

12. IPD Sharing Statement

Citations:
PubMed Identifier
30646391
Citation
Spindle TR, Cone EJ, Schlienz NJ, Mitchell JM, Bigelow GE, Flegel R, Hayes E, Vandrey R. Acute Effects of Smoked and Vaporized Cannabis in Healthy Adults Who Infrequently Use Cannabis: A Crossover Trial. JAMA Netw Open. 2018 Nov 2;1(7):e184841. doi: 10.1001/jamanetworkopen.2018.4841. Erratum In: JAMA Netw Open. 2018 Dec 7;1(8):e187241.
Results Reference
derived

Learn more about this trial

Pharmacokinetic and Pharmacodynamic Effects of Smoked and Vaporized Cannabis

We'll reach out to this number within 24 hrs