A Controlled Laboratory Study of the Effects on Cue-Induced Craving in Dependent Smokers

NCT ID: NCT00901459

Last Updated: 2013-01-25

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 21 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2009-05-31
• Study Completion Date: 2010-08-31

Brief Summary

The purpose of this study is to investigate the use of repetitive transcranial magnetic stimulation (rTMS) to block craving for cigarettes in smokers. rTMS is an investigational procedure, where a device called a "stimulator" provides electricity to a device that creates a magnetic field. This device is placed against the scalp in the front of the head so that the magnetic field is focused on an area of the brain that is thought to be involved in craving for cigarettes. rTMS is an investigational procedure so therefore being tested in research studies and is not approved by the U.S. Food and Drug Administration (FDA). Changes in magnetic fields during rTMS administration change electrical currents which may affect brain activity and function.

Detailed Description

The goal of this study is to evaluate the effects of rTMS on cue-induced craving in dependent smokers. We hypothesize that low frequency rTMS over the SFG will block cue-induced craving. In order to test this hypothesis, subjects will undergo three conditions:

1. active condition: low frequency rTMS was administered over the superior frontal gyrus (SFG) during the presentation of smoking and control cues

2. location control condition: low frequency rTMS was administered over motor cortex (MC) during the presentation of smoking and control cues

3. frequency control condition: high frequency rTMS was administered over the SFG during the presentation of smoking and control cues

Conditions

Nicotine Dependence

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

rTMS 90% MT - Low frequency rTMS

Intervention type: device. Intervention description: low frequency rTMS was administered over the superior frontal gyrus (SFG) during the presentation of smoking and control cues using 90% MT (Motor Threshold) 1 Hz rTMS Dose on Superior Frontal Gyrus

Group Type: ACTIVE_COMPARATOR

Active rTMS Condition

Intervention Type: DEVICE

Low frequency rTMS (90% Motor Threshold at 1 HZ) will be administered over the superior frontal gyrus (SFG) during the presentation of smoking and control cues.

Location Control

rTMS Dosing: 90% MT (Motor Threshold) 1 Hz rTNS Location: Motor Cortex

Group Type: ACTIVE_COMPARATOR

rTMS Location Control Condition

Intervention Type: DEVICE

Low frequency rTMS (90% Motor Threshold at 1 HZ) will be administered over the motor cortex (MC) during the presentation of smoking and control cues.

Frequency Control

rTMS Dosing: 90% MT (Motor Threshold) 10 Hz rTNS Location: Superior Frontal Gyrus

Group Type: ACTIVE_COMPARATOR

rTMS Frequency Control Condition

Intervention Type: DEVICE

High frequency rTMS (90% Motor Threshold at 10 HZ) will be administered over the superior frontal gyrus (SFG) during the presentation of smoking and control cues.

Interventions

Active rTMS Condition

Low frequency rTMS (90% Motor Threshold at 1 HZ) will be administered over the superior frontal gyrus (SFG) during the presentation of smoking and control cues.

Intervention Type: DEVICE

rTMS Location Control Condition

Low frequency rTMS (90% Motor Threshold at 1 HZ) will be administered over the motor cortex (MC) during the presentation of smoking and control cues.

Intervention Type: DEVICE

rTMS Frequency Control Condition

High frequency rTMS (90% Motor Threshold at 10 HZ) will be administered over the superior frontal gyrus (SFG) during the presentation of smoking and control cues.

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

1. 18 to 50 years of age;

2. dependent smoker of > 10 cigarettes per day of cigarettes yielding >0.5mg nicotine (by Federal Trade Commission rated yields);

3. have smoked cigarettes for at least three cumulative years;

4. an afternoon carbon monoxide reading of at least 10ppm;

5. be in general good health based on physical examination, EKG, serum chemistries, CBC, and urinalysis and

6. show evidence of greater craving following exposure to in vivo smoking versus control cues

Exclusion Criteria

1. Individuals with a clinically defined neurological disorder or insult including, but not limited to, any condition likely to be associated with increased intracranial pressure;

2. space occupying brain lesion;

3. any history of seizure EXCEPT those therapeutically induced by ECT (Electro Convulsive Therapy);

4. history of cerebrovascular accident;

5. transient ischemic attack within two years;

6. cerebral aneurysm;

7. dementia;

8. Parkinson's disease;

9. Huntington's chorea;

10. multiple sclerosis;

11. current lung disease or lung disorder;

12. hypertension (systolic >140 mmHg, diastolic > 90 mmHg);

13. hypotension (< 90 mmHg, diastolic < 60 mmHg);

14. coronary artery disease;

15. cardiac rhythm disorder;

16. impaired hepatic or renal function (based on documented diagnosis or abnormal chemistries) except gallstones or kidney stones;

17. other major medical or psychiatric condition;

18. use of any concurrent hypertensive, psychiatric, or psychoactive medication;

19. any concurrent medication that lowers seizure threshold;

20. smokeless tobacco, pipe, or cigar use in the past 30 days;

21. nicotine replacement therapy, or other smoking cessation therapy within the past 30 days;

22. increased risk of seizure for any reason, including prior diagnosis of increased intracranial pressure (such as after large infarctions or trauma), or history of significant head trauma with loss of consciousness for > 5 minutes;

23. ECT treatment within 3 months prior to screening visit;

24. failure to respond to ECT treatment (i.e., consistent with ATHF level 2 or higher);

25. a true positive response to any question on the Transcranial Magnetic Stimulation Adult Safety Screen questionnaire;

26. history of treatment with rTMS therapy for any disorder;

27. use of any investigational drug within 30 days of the screening visit;

28. history of treatment with Vagus Nerve Stimulation;

29. use of any medication(s) with active CNS properties within 1 week of the screening visit;

30. cardiac pacemakers, implanted medication pumps, intracardiac lines, or acute, unstable cardiac disease; intracranial implant (e.g., aneurysm clips, shunts, stimulators, cochlear implants, or electrodes) or any other metal object within or near the head, excluding the mouth, that cannot be safely removed;

31. known or suspected pregnancy;

32. positive urine drug screen or reported drug abuse in the past 30 days;

33. clinically significant laboratory abnormality, in the opinion of the investigator or study physician;

34. women who are breast-feeding; women of child-bearing potential not using a medically accepted form of contraception when engaging in sexual intercourse;

35. current chronic pain or other pain condition that interferes with daily activities or requires use of prescription medication;

36. claustrophobia or abnormal fear of cramped or confined space;

37. Individuals where a motor threshold response is not elicited with stimulation at or below 80% of maximum output;

38. active ulcer within the past 30 days;

39. frequent migraines (great than four in the past 30 days);

40. Females who score greater than or equal to 13 and males who score greater than or equal to 15 on the AUDIT (Alcohol Use Disorders Identification Test)will be excluded from the study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Duke University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Jed E Rose, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Duke University

Andrew D Krystal, M.D., M.S.

Role: PRINCIPAL_INVESTIGATOR

Duke University

Francis J McClernon, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

Duke University

Locations

Duke Center for Nicotine & Smoking Cessation Research

Durham, North Carolina, United States

Countries

United States

References

Rose JE, McClernon FJ, Froeliger B, Behm FM, Preud'homme X, Krystal AD. Repetitive transcranial magnetic stimulation of the superior frontal gyrus modulates craving for cigarettes. Biol Psychiatry. 2011 Oct 15;70(8):794-799. doi: 10.1016/j.biopsych.2011.05.031. Epub 2011 Jul 18.

Reference Type: DERIVED

PMID: 21762878 (View on PubMed)

Other Identifiers

Pro00002339

Identifier Type: -

Identifier Source: org_study_id