Lai CH, Wu YT. Patterns of fractional amplitude of low-frequency oscillations in occipito-striato-thalamic regions of first-episode drug-naïve panic disorder.
J Affect Disord 2012;
142:180-5. [PMID:
22770722 DOI:
10.1016/j.jad.2012.04.021]
[Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/13/2012] [Accepted: 04/13/2012] [Indexed: 12/27/2022]
Abstract
OBJECTIVE
This study was designed to investigate patterns of fractional amplitude of low-frequency fluctuations (fALFF, an indicator for the intensity of regional brain spontaneous activities) of patients with first-episode drug-naïve panic disorder (PD).
METHODS
Thirty patients (17 females, 13 males, age: 47.70±10.69 years old) and twenty healthy controls (10 females, 10 males, age: 41.40±13.94 years old) received 3-Tesla resting-state functional magnetic resonance imaging (RFMRI) scanning and the rating of clinical scales. RFMRI data was processed and analyzed by the REST toolbox (resting-state functional MRI data analysis toolbox) to calculate fALFF. fALFF were compared between patients and controls to detect endophenotype of fALFF in patients with first-episode drug-naïve PD.
RESULTS
We found decreased fALFF in right middle occipital gyrus [FDR (false discovery rate) corrected p<0.05, cluster >5 voxles, volume >135mm(3), T threshold: 6.1168, surface connected theory] and increased fALFF in right putamen and right ventral lateral nucleus of thalamus of patients (uncorrected p<0.00005, cluster >5 voxles, volume >135mm(3), T threshold: 4.5439, surface connected theory). fALFF of patients also showed a positive correlation with clinical rating scores of PD in right cuneus.
CONCLUSIONS
Occipito-striato-thalamic dysfunction of fALFF might represent a kind of endophenotype biomarker of first-episode drug-naïve PD.
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