Transcranial Direct Current Stimulation (tDCS) Augmentation by D-Cycloserine as a Treatment for Depression

T

The University of New South Wales

Status and phase

Completed
Phase 2

Conditions

Major Depressive Disorder
Bipolar Disorder

Treatments

Device: tDCS (Eldith DC-Stimulator (CE certified))
Drug: D-Cycloserine

Study type

Interventional

Funder types

Other

Identifiers

NCT00869765
09052

Details and patient eligibility

About

Among antidepressant treatments, Electroconvulsive therapy (ECT) stands as the most effective in treating acute depression. However, patient concerns with the cognitive side effects of ECT have encouraged the development of new and more focal forms of brain stimulation such as transcranial Direct Current Stimulation (tDCS). The investigators' current study of tDCS as a treatment for depression suggests that this technique has antidepressant effects and is safe, painless and well tolerated. However, not all patients may respond to this treatment and the concern of possible relapse in some patients who respond to tDCS has raised interest in finding treatments that may enhance and prolong the antidepressant effects of tDCS. This study will investigate whether D-Cycloserine, a medication shown to lengthen the effects of tDCS on brain activity, can also enhance/prolong the antidepressant effects of tDCS in people suffering from depression.

Enrollment

5 patients

Sex

All

Ages

18 to 90 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Subject met inclusion criteria for study HREC 07305 (a sham controlled study of transcranial direct current stimulation (tDCS) as a treatment for depression).
  2. Subject completed study HREC 07305.
  3. Subject either did not reach remission at the end of trial (defined as MADRS score of ≤ 10) or suffered an early relapse (within a month of finishing the trial).

Exclusion criteria

  1. Diagnosis (as defined by DSM-IV) of: any psychotic disorder (lifetime); bipolar disorder; eating disorder (current or within the past year); obsessive compulsive disorder (lifetime); post-traumatic stress disorder current or within the past year); mental retardation.
  2. History of drug or alcohol abuse or dependence (as per DSM-IV criteria) within the last 3 months (except nicotine and caffeine).
  3. Inadequate response to ECT in the current episode of depression.
  4. Subject is on regular benzodiazepine medication which it is not clinically appropriate to discontinue.
  5. Subject requires a rapid clinical response due to inanition, psychosis or high suicide risk.
  6. Neurological disorder or insult, e.g., recent stroke (CVA), which places subject at risk of seizure or neuronal damage with tDCS.
  7. Subject has metal in the cranium, skull defects, or skin lesions on scalp (cuts, abrasions, rash) at proposed electrode sites.
  8. Female subject who is pregnant, or of child-bearing age, sexually active and not using reliable contraception (urine test for pregnancy will be used)

Trial design

Primary purpose

Treatment

Allocation

N/A

Interventional model

Single Group Assignment

Masking

None (Open label)

5 participants in 1 patient group

tDCS and D-CYC
Experimental group
Description:
Major Depression tDCS and D-cyc
Treatment:
Drug: D-Cycloserine
Device: tDCS (Eldith DC-Stimulator (CE certified))

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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