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A Double-Blind Placebo Controlled Trial of Repetitive Transcranial Magnetic Stimulation (rTMS) in the Treatment of Negative Symptoms in Schizophrenia (rTMS)

15. april 2012 opdateret af: Assoc Professor Paul Fitzgerald, The Alfred

A Double-Blind Placebo Controlled Trial of Repetitive Transcranial Magentic Stimulation (rTMS) in the Treatment of Negative Symptoms in Schizophrenia and Related Disorders

There is pilot data to suggest the therapeutic value of rTMS applied to the left prefrontal cortex in the treatment of negative symptoms. Neuroimaging studies demonstrate abnormal activity in this region in patients experiencing negative symptoms. Finally rTMS applied at high frequency shows the capacity to up-regulate cortical activity in a way that would provide an explanation for a therapeutic response.

The study involves participants receiving 15 sessions of high frequency rTMS treatment applied bilaterally to the prefrontal cortex over a 3 week period or sham rTMS. Following this double blind phase, participants randomised to placebo treatment will be offered 15 sessions of active treatment.

In addition, ppTMS (paired pulse TMS) will be conducted prior to the onset of treatment and after completion of the course, as a means of measuring cortical inhibition and facilitation. NIRS (Near Infra red spectroscopy) will also be conducted prior to, during and after the first and last treatment sessions to allow monitoring of oxygenated and deoxygenated haemoglobin.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The main outcome measure used is the SANS (Scale for the Assessment of Negative Symptoms. This is a semi strucutured interview which provides scores from 0-70. This is administered at baseline, week 2, 3, 5 and 6.

Other outcome measures administered are (frequency mentioned above): PANSS (Positive and Negative Syndrome Scale) and the Calgery Depression Scale for Schizophrenia, A cognitive battery is also administered.

Inclusion Criteria:

  • Diagnostic and Statistical Manual-IV diagnosis of schizophrenia or schizoaffective disorder, age over 18
  • Persistent negative symptoms of moderate to severe intensity
  • Failure to respond to a minimum of two antipsychotic medications
  • No increase or initiation of new antipsychotic therapy in the four weeks prior to entering the trial Exclusion Criteria
  • Prominent positive symptoms
  • Have an unstable medical condition, neurological disorder or any history of seizure disorder or are currently pregnant or lactating
  • Previous brain injury or surgery, any metal clips, plates or other metal items in the head, cardiac pacemaker
  • Subjects at high risk of violence or suicide as determined by the investigator and treating clinicians
  • Substance dependence

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

22

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Australien
    • Victoria
      • Melbourne, Victoria, Australien, 3181
        • Alfred Psychiatry Research Centre

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 70 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • DSM-IV diagnosis of schizophrenia or schizoaffective disorder, age over 18
  • Persistent negative symptoms of moderate to severe intensity
  • Failure to respond to a minimum of two antipsychotic medications
  • No increase or initiation of new antipsychotic therapy in the four weeks prior to entering the trial

Exclusion Criteria:

  • Prominent positive symptoms
  • Have an unstable medical condition, neurological disorder or any history of seizure disorder or are currently pregnant or lactating
  • Previous brain injury or surgery, any metal clips, plates or other metal items in the head, cardiac pacemaker
  • Subjects at high risk of violence or suicide as determined by the investigator and treating clinicians
  • Substance dependence

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Active Treatment
Bilateral high frequency (10 Hertz) rTMS
Enhed: Transcranial Magnetic Stimulation
Participants were sequentially randomly assigned to either 15 active bilateral treatments or 15 sham bilateral treatments that were administered on a daily basis, five days per week.
Sham-komparator: Sham rTMS
Bilateral Sham rTMS
Enhed: sham TMS

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Scale for the Asessment of Negative Symptoms (SANS)
Tidsramme: 3 weeks
Scale for Assessment of Negative Symptoms [SANS]. This is a semi structured interview. Assessments are conducted on a six-point scale (0=not at all to 5=severe)with a total score range of 0-70. A score of >50 is considered to be a moderate-severe intensity.
3 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

The Alfred

Efterforskere

  • Ledende efterforsker: Paul B Fitzgerald, MBBS, PhD, Alfred Psychiatry Research Centre

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. august 2002

Primær færdiggørelse (Faktiske)

1. juli 2007

Studieafslutning (Faktiske)

1. juli 2007

Datoer for studieregistrering

Først indsendt

14. september 2005

Først indsendt, der opfyldte QC-kriterier

14. september 2005

Først opslået (Skøn)

15. september 2005

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

14. maj 2012

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

15. april 2012

Sidst verificeret

1. april 2012

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 81/02

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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Placeringer

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