Phase 4
Completed N=19
The Effects of Eszopiclone and Lexapro on Prefrontal Glutamate and GABA in Depression With Anxiety and Insomnia
Source: ClinicalTrials.gov NCT00826111 ↗Enrolled (actual)
19
Serious AEs
0.0%
Results posted
Jun 2012
Primary outcomePrimary: Change in Anterior Cingulate Cortex Glutamine From Baseline to Week 1. — 0.00059; 0.00908 ratio (glutamine to creatine) — p=0.88
Summary
The study examined the effects of adding the sleep aid eszopiclone to Lexapro on mood and levels of the neurotransmitters glutamate, glutamine, and GABA in women with depression, anxiety, and insomnia. Specifically, the objective was to determine the role of glutamate, glutamine, and GABA in mediating the response the to the combined treatment. The hypothesis was that levels of glutamine and glutamate will be increased in women receiving eszopiclone compared to those receiving placebo. The antidepressant effect of the medication combination and its effect on sleep status was also assessed.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Change in Anterior Cingulate Cortex Glutamine From Baseline to Week 1. |
0.00059; 0.00908 | 0.88 |
| PRIMARY Change in Thalamic Glutamine From Baseline to Week 1 |
-0.6639; -0.3551 | 0.79 |
| SECONDARY Change in Anterior Cingulate Cortex Glutamate From Baseline to Week 1 |
-0.0066; 0.215 | 0.16 |
| SECONDARY Change in Thalamic Glutamate From Baseline to Week 1 |
-0.0016; -0.7715 | 0.29 |
| SECONDARY Change in Anterior Cingulate Cortex GABA From Baseline to Week 1 |
0.0013; -0.0036 | 0.37 |
| SECONDARY Change in Thalamic GABA From Baseline to Week 1 |
-0.0002; -0.0058 | 0.21 |
| SECONDARY Change in Hamilton Depression Rating Scale Score From Baseline to Week 10 |
-13.4; -20.75 | 0.10 |
| SECONDARY Change in Hamilton Anxiety Rating Scale Score From Baseline to Week 10 |
-11.4; -12 | 0.89 |
| SECONDARY Change in Insomnia Severity Index Score From Baseline to Week 10 |
-11.2; -9.5 | 0.66 |
Eligibility Criteria
Inclusion Criteria
- Female aged 18 to 55 years and regularly menstruating.
- Meets DSM-IV criteria for unipolar major depression.
- Insomnia severity index score > 10.
- Hamilton Anxiety scale score > 15.
- Hamilton Depression scale score > 17.
- Capable of providing informed consent.
- Has an established residence and phone.
Exclusion Criteria
- Meets DSM-IV criteria for schizophrenia, schizoaffective disorder or other axis I or II diagnosis except co-morbid anxiety disorder and insomnia.
- Actively abusing substances or alcohol; or has met DSM-IV criteria for substance dependence in the past month.
- Pregnancy.
- Use of benzodiazepines or other sedative-hypnotics, beta blockers, calcium channel blockers, antidepressants, antipsychotic medications, lithium or other medication which in the opinion of the investigator could alter glutamate or GABA activity in the brain.
- A medical condition, which in the opinion of the investigator could possibly affect the individual's brain levels of Glu and GABA.
- Participation in a research protocol that included administration of medication within the past 3 months.
- Cigarette smoking.
- Subject has known allergic sensitivity to any of the study to escitalopram, eszopiclone or zopiclone.
- Clinically significant suicidal ideation or risk of suicide as evidenced by formulation of a plan or steps taken to act on those feelings.
- History of clinically significant hepatic impairment.
- Subject is taking a potent cytochrome p450 3A4 inhibitor medication (ritonavir, nelfinavir, indinavir, erythromycin, clarithromycin, troleandomycin, ketoconazole, itraconazole) and is unwilling or it is clinically contraindicated to stop the medication.
Data sourced from ClinicalTrials.gov (NCT00826111). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.