Title

Artemisinin to Reduce The Symptoms of Schizophrenia
Double-Blind Trial of Artemisinin to Reduce The Symptoms of Schizophrenia
  • Phase

    N/A
  • Study Type

    Interventional
  • Intervention/Treatment

    Artemisinin ...
  • Study Participants

    66
The investigators intend to explore the hypothesis that symptoms of schizophrenia may be reduced by the antimalarial compound artemisinin when used in addition to standard antipsychotic medications.
The aims of the current study are:

To evaluate the efficacy and side effects of artemisinin as an add-on compound for patients with schizophrenia who have residual psychotic symptoms of at least moderate severity.
To evaluate the effect of artemisinin on cognitive impairments and associated functional skills.
To investigate whether treatment with artemisinin produces a significant effect on the levels of antibodies to Toxoplasma.
To examine whether changes in cognitive impairment or psychiatric symptoms are correlated with changes in antibodies to Toxoplasma before and during the treatment with artemisinin.
Study Started
Aug 31
2008
Primary Completion
May 31
2010
Study Completion
May 31
2010
Results Posted
Feb 20
2012
Estimate
Last Update
Feb 28
2012
Estimate

Dietary Supplement Artemisinin

100 mg of artemisinin twice per day for 10 weeks

Dietary Supplement Identical looking placebo capsule

Identical looking placebo twice per day for 10 weeks

Artemisinin Active Comparator

100 mg artemisinin capsule

Placebo Placebo Comparator

Identical looking placebo capsule

Criteria

Inclusion Criteria

Age 18-65 years old.
Capacity for written informed consent.
Primary Axis I diagnosis (DSM-IV) of schizophrenia, any type, OR schizoaffective disorder (APA, 1994).
Currently an outpatient at the time of enrollment.
Residual psychotic symptoms which are at least moderately severe as evidenced by one or more Positive and Negative Syndrome Scale (PANSS) positive symptom scores, and/or PANSS negative symptom scores of 4 or more; OR a total PANSS score of 50 or more, containing at least three positive or negative items with scores of 3 or more at screening.
Conformance to Patient Outcome Research Team (PORT) Treatment Recommendation #5, Maintenance Antipsychotic Medication Dose (Lehman et al., 2004).
Receiving antipsychotic medication for at least 8 weeks prior to starting the study with no medication changes within the previous 21 days.
Participants must be proficient in English.

Exclusion Criteria

Diagnosis of mental retardation.
History of IV drug use.
Any serious medical condition that affects brain or cognitive functioning (e.g., epilepsy, serious head injury, brain tumor or other neurological disorder).
HIV infection or other immunodeficiency condition.
Primary diagnosis of substance abuse or dependence according to DSM-IV criteria within the last three months.
Participated in any investigational drug trial in the past 30 days.
Pregnancy or planning to become pregnant during the study period.
Any clinically significant or unstable medical disorder as determined by the investigators that would preclude study participation, including congestive heart failure, abnormal liver function or disease, renal failure, and any diagnosis of cancer undergoing active treatment.

Summary

Artemisinin

Placebo

All Events

Event Type Organ System Event Term Artemisinin Placebo

Change in Positive and Negative Syndrome Scale (PANSS) Score From the Beginning to the End of the Double-blind Treatment Phase Weeks 2-12

The Positive and Negative Syndrome Scale (PANSS) measures psychiatric symptomatology, especially related to psychosis. The complete PANSS contains ratings for 30 symptoms, including 7 positive symptoms, 7 negative symptoms, and 16 general psychiatric symptoms. The severity of each symptom is rated on a scale ranging from 1 (minimal) to 7 (extreme); higher scores indicate increased symptomatology. Total PANSS scores include scores from all categories and range from 30 to 210 units on a scale. PANSS positive symptom scores and negative symptom scores each range from 7 to 49 units on a scale.

Artemisinin

Week 12 PANSS general score

27.81
units on a scale (Mean)
Standard Deviation: 4.78

Week 12 PANSS negative score

18.69
units on a scale (Mean)
Standard Deviation: 3.69

Week 12 PANSS positive score

14.92
units on a scale (Mean)
Standard Deviation: 5.11

Week 12 PANSS total symptom score

61.42
units on a scale (Mean)
Standard Deviation: 10.53

Week 2 PANSS general score

29.5
units on a scale (Mean)
Standard Deviation: 5.32

Week 2 PANSS negative score

19.08
units on a scale (Mean)
Standard Deviation: 3.12

Week 2 PANSS positive score

15.42
units on a scale (Mean)
Standard Deviation: 4.18

Week 2 PANSS total symptom score

64.0
units on a scale (Mean)
Standard Deviation: 8.74

Placebo

Week 12 PANSS general score

30.94
units on a scale (Mean)
Standard Deviation: 4.84

Week 12 PANSS negative score

19.03
units on a scale (Mean)
Standard Deviation: 3.67

Week 12 PANSS positive score

16.35
units on a scale (Mean)
Standard Deviation: 5.35

Week 12 PANSS total symptom score

66.32
units on a scale (Mean)
Standard Deviation: 9.45

Week 2 PANSS general score

32.1
units on a scale (Mean)
Standard Deviation: 6.18

Week 2 PANSS negative score

19.77
units on a scale (Mean)
Standard Deviation: 3.48

Week 2 PANSS positive score

16.26
units on a scale (Mean)
Standard Deviation: 3.96

Week 2 PANSS total symptom score

68.13
units on a scale (Mean)
Standard Deviation: 9.07

Change in Cognitive Functioning as Measured by the Repeatable Battery for the Assessment of Neuropsychological Status and Change in Functional Performance as Measured by the UCSD Performance-based Skills Assessment.

Outcome Measure Data Not Reported

Total

66
Participants

Age Continuous

47.3
years (Mean)
Standard Deviation: 9.3

Age, Categorical

Region of Enrollment

Sex: Female, Male

Overall Study

Artemisinin

Placebo

Drop/Withdrawal Reasons

Artemisinin

Placebo