University of Houston Drug Abuse Research Development Program II (UHDARDP-II)

The study is examining the impact of a Virtual Reality Cue Exposure Therapy intervention on heroin cravings compared to Relapse Prevention Drug Education.

Study Overview

• Status: Unknown
• Conditions: Heroin Dependence
• Intervention / Treatment: Behavioral: Virtual Reality Cue Exposure Therapy; Behavioral: Relapse Prevention Drug Education

Detailed Description

Injection Drug Use (IDU) is a chronic, relapsing condition with grave individual and public health consequences.19-21 A majority (53%) of all past-year IDUs prefer heroin, as do 39% of single-drug injectors, second only to Methamphetamine.22,23 Non-injection heroin use (NIDU) is increasing, due to growing awareness of IDU risks, particularly HIV/AIDS;21,24-26 increased purity of street heroin;27-29 greater regulation of other opiates;30,31 and opioid abusers switching to heroin for its lower cost.32 Many NIDUs transition to IDU, incurring greater risks.2,21,33,34 Drug cravings are intense urges to use drugs35,36 and they contribute to drug use37, relapse38, and transitioning from NIDU to IDU.39 Cravings are triggered by environmental factors and due to the significance of craving in drug use and relapse they will be part of the proposed criteria for DSM5.40,41

HIV, Hepatitis C (HCV), and Sexually-Transmitted Infections (STIs) continue to be associated with both IDU and NIDU.33,42-44 Hispanics are over-represented among both IDU and NIDU heroin users.21,23,45,46 Mexican American IDUs have very low rates of HIV.10,47 However, their HCV rates are very high and continue to increase, further compromising their health.10,48,49 They also have elevated rates of high-risk sex behaviors 33,50 and they are less likely to decrease these high-risk sex behaviors than they are to decrease their injection- behavior risks, especially as they age.10,51 Furthermore, HIV/HCV/STI prevention interventions can lead to fatigue52-54 so they must continue to be delivered to at-risk populations across all relevant settings. Young Texans ages 15-24 are becoming HIV infected at high rates, with Hispanics disproportionately impacted and diagnosed later: 42% of infected Texan Hispanics receive an HIV-positive and an AIDS diagnosis within the same year, compared to 32% of Anglos and 31% of Blacks.55 Thus, early detection of high-risk Hispanics is vital, making this proposal timely and critical.

Greatly needed are novel interventions that address drug cravings (DCs), take into account environmental context, and incorporate HIV/HCV prevention components. Developing these interventions and adapting them to the many diverse at-risk populations, however, can be costly and challenging. Cue exposure therapy (CET)56,57 may be a viable approach. CET is a promising intervention that can decrease DCs by repeatedly exposing an individual to a craving inducing stimulus (e.g., a shooting gallery scenario) while simultaneously preventing the conditioned behavioral response (e.g., drug use). The individual can be trained in vitro (in the lab) to use coping skills in direct response to activated cravings, then use these skills in vivo (in the natural environment). A challenge associated with CET, for both ethical and logistical reasons, is the ability to expose individuals to realistic simulated cues of the natural environment in a secure laboratory or therapeutic setting. Virtual Reality (VR) is an innovative, cutting-edge tool that can enable researchers to overcome these obstacles. VR scenarios integrate elements from the individual's various contexts-culture, neighborhood, family, networks, and individual characteristics-into the clinical or lab setting, and provide complex multi-sensory cues through an immersive human-computer interaction.58

The public health significance of this primary project is high. Drug use in general and injection drug use (IDU) in particular are serious public health concerns, as are the rates of HCV and STIs in IDUs. Interventions that decrease craving, increase coping skills, and incorporate HIV/HCV/STI prevention components can be critical tools in treating drug use disorders and their serious health consequences. In addition, it is critical to train diverse researchers who possess intimate knowledge of the populations impacted by drug use and who understand the cultural and contextual elements of those populations, to conduct this innovative research.

The specific research hypotheses and objectives are as follows:

1. Refine and develop a Virtual Reality Heroin Scenario (VRHS) using qualitative data (i.e., photos and descriptions of heroin using sites and contexts) from our current UHDARDP's Primary Project.

2. Measure the effects of exposure to virtual reality heroin cues on craving and physiological reactivity.

   Hypothesis 1a: VR cues will increase subjective heroin craving and physiological reactivity.

   Hypothesis 1b: Heroin craving and physiological reactivity will decrease as a result of repeated exposure to virtual cues.

3. Compare Virtual Reality-Based Cue Exposure Therapy (VRCET) and Relapse Prevention Drug Education (RPDE) on extinction of heroin craving and physiological reactivity across cue trials.

   Hypothesis 2: VRCET will attenuate cue-elicited subjective heroin craving and physiological reactivity relative to RPDE.

4. Examine the in vivo effects of VRCET on heroin craving, craving coping skills, and actual heroin use, compared to RPDE.

   Hypothesis 3: VRCET will lead to a decrease in heroin craving, an increase in craving coping skills use, and decreased heroin use, in the natural environment, compared to RPDE.

5. Deliver an HIV/HCV prevention intervention to this high-risk population. Hypothesis 4: The prevention intervention will increase prevention knowledge and intention to use the skills learned.
6. Determine if medication assisted therapies, such as methadone or buprenorphine, have an impact on cue reactivity for former heroin IDU when immersed in the virtual environments, as compared to current users.

Hypothesis 5: Participants on medication assisted therapies will exhibit lower levels of cue reactivity within the VR environment than participants who are currently still using heroin.

• Study Type: Interventional
• Enrollment (Anticipated): 100
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Luis R Torres, PhD; Phone Number: 713-743-8512; Email: LRTorres@uh.edu
• Study Contact Backup: Name: Micki Washburn, PhD; Phone Number: 713-743-0319; Email: mewashbu@Central.UH.EDU

Study Locations

• United States
  • Texas
    • Houston, Texas, United States, 77204
      • Recruiting
      • University of Houston Virtual Reality Clinical Research Lab
      • Contact: Luis R Torres, PhD; Phone Number: 713-743-8512; Email: LRTorres@uh.edu
      • Contact: Micki Washburn, PhD; Phone Number: 713-743-0319; Email: mewashbu@Central.UH.EDU

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 64 years (ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Injection or Non-Injection heroin user, 3 or more years of heroin use, Hispanic/Latino

Exclusion Criteria:

• Non heroin user, non-Hispanic/Latino, younger than 18 or older than 64, treated with any medications having a potential effect on heroin craving, mood, or heroin cessation medications in the past 30 days; use of other prescription and non-prescription drugs that may affect participation; Fear of closed spaces or inability to wear VR goggles; Visual problems that effect viewing VR materials; History of seizures or seizure disorders; History of serious self-reported health problems; and women who are pregnant

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: NONE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: TREATMENT:Virtual Reality Cue Exposure Therapy (VRCET); Virtual Reality Cue Exposure Therapy (VRCET) - Active Intervention - comprised of exposure to VR based heroin cues, such as heroin use paraphernalia and scenes of people using injection heroin or snorting heroin. Exposure will be supplemented by the use of a standardized CBT based skills coping protocol teaching relapse prevention skills such as urge surfing, thought stopping and reframing. Lab based reactivity will be measured by self-reported craving on a scale from 0 (none) to 100 (highest ever), heart rate, galvanic skin response, and muscle tension. Secondary outcome measures are number of times of self-reported drug use in vivo as recorded by a cell phone app based Ecological Momentary Assessment Device (EMA).	Behavioral: Virtual Reality Cue Exposure Therapy; As above.
ACTIVE_COMPARATOR: Control: Relapse Prevention Drug Education; Relapse Prevention Drug Education (RPDE) is our Active Comparator. Comprised of watching a series of videos on the health risks of heroin use as well as information about relapse prevention. Lab based reactivity will be measured by self-reported craving on a scale from 0 (none) to 100 (highest ever), heart rate, galvanic skin response, and muscle tension. Secondary outcome measures are number of times of self-reported drug use in vivo as recorded by a cell phone app based Ecological Momentary Assessment Device (EMA).	Behavioral: Relapse Prevention Drug Education; As above.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Self-reported reactivity to cues	Self-reported craving on a scale from 0 (none) to 100 (highest ever)	3 hours (6 blocks of 3 minutes with time in between each block); this is done in two consecutive weeks.
Lab-based reactivity to cues	Heart rate (ECG) assessed in beats per minute using a Bioradio Wireless Physiology (see https://glneurotech.com/bioradio/psychophysiology-equipment/).	3 hours (6 blocks of 3 minutes with time in between each block); this is done in two consecutive weeks. These are monitored continuously every 10th of a second.
Lab-based reactivity to cues	Galvanic skin response (GSR) assessed using a Bioradio Wireless Physiology (see https://glneurotech.com/bioradio/psychophysiology-equipment/).	3 hours (6 blocks of 3 minutes with time in between each block); this is done in two consecutive weeks. These are monitored continuously every 10th of a second.
Lab-based reactivity to cues	Changes in muscle tension (EMG) assessed using a Bioradio Wireless Physiology (see https://glneurotech.com/bioradio/psychophysiology-equipment/).	3 hours (6 blocks of 3 minutes with time in between each block); this is done in two consecutive weeks. These are monitored continuously every 10th of a second.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of times of self-reported drug use in vivo during the week between lab sessions.	As recorded by a cell phone app based Ecological Momentary Assessment Device (EMA)	Continuously during the 4 weeks

Collaborators and Investigators

• Sponsor: University of Houston
• Collaborators: National Institute on Drug Abuse (NIDA)

Study record dates

Study Major Dates

• Study Start (ACTUAL): August 1, 2014
• Primary Completion (ANTICIPATED): August 31, 2019
• Study Completion (ANTICIPATED): March 31, 2020

Study Registration Dates

• First Submitted: April 17, 2018
• First Submitted That Met QC Criteria: June 4, 2018
• First Posted (ACTUAL): June 15, 2018

Study Record Updates

• Last Update Posted (ACTUAL): August 6, 2018
• Last Update Submitted That Met QC Criteria: August 2, 2018
• Last Verified: August 1, 2018

More Information

Terms related to this study

• Keywords: Hispanics; Opioid Dependence; Mexican Americans; Injection Drug Use; Virtual Reality Cue Exposure
• Additional Relevant MeSH Terms: Mental Disorders; Chemically-Induced Disorders; Narcotic-Related Disorders; Opioid-Related Disorders; Substance-Related Disorders; Heroin Dependence
• Other Study ID Numbers: 5R24DA019798-08 REVISED; 5R24DA019798 (NIH)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No