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Peripheral SLC6A4 Gene Expression in Obsessive-Compulsive Disorder in the Han Chinese Population.
Shanghai Archives of Psychiatry 2017 June 26
BACKGROUND: Serotonergic system dysfunction has been implicated in obsessive-compulsive disorder (OCD). This study examined peripheral SLC6A4 gene expression in OCD patients and healthy controls to explore the relationship between SLC6A4 and OCD.
METHODS: Participants included 50 first episode OCD patients and 60 age and gender-matched healthy controls. Relative SLC6A4 gene expression were examined by real-time quantitative reverse transcription polymerase chain reaction (RT-PCR) in peripheral leukocytes of all the subjects. The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) was used to assess the severity and subtype of OCD.
RESULTS: SLC6A4 gene expression, normalized by glyceraldehyde-3-phosphate dehydrogenase (GAPDH), were not significantly different between the OCD patients and healthy controls(z=-0.79, p=0.428). Male OCD patients showed a tendency of low gene expression of SLC6A4 in peripheral blood (z=-1.66, p=0.096). We did not find a significant correlation between SLC6A4 expression and the severity and subtype of OCD.
CONCLUSION: There is no correlation between SLC6A4 expression levels and the severity and subtype of OCD, but male OCD patients showed a tendency of low gene expression of SLC6A4 in peripheral blood. These results suggest that gene expression of SLC6A4 in peripheral blood may not be a useful biomarker of OCD in the Han Chinese population.
METHODS: Participants included 50 first episode OCD patients and 60 age and gender-matched healthy controls. Relative SLC6A4 gene expression were examined by real-time quantitative reverse transcription polymerase chain reaction (RT-PCR) in peripheral leukocytes of all the subjects. The Yale-Brown Obsessive Compulsive Scale (Y-BOCS) was used to assess the severity and subtype of OCD.
RESULTS: SLC6A4 gene expression, normalized by glyceraldehyde-3-phosphate dehydrogenase (GAPDH), were not significantly different between the OCD patients and healthy controls(z=-0.79, p=0.428). Male OCD patients showed a tendency of low gene expression of SLC6A4 in peripheral blood (z=-1.66, p=0.096). We did not find a significant correlation between SLC6A4 expression and the severity and subtype of OCD.
CONCLUSION: There is no correlation between SLC6A4 expression levels and the severity and subtype of OCD, but male OCD patients showed a tendency of low gene expression of SLC6A4 in peripheral blood. These results suggest that gene expression of SLC6A4 in peripheral blood may not be a useful biomarker of OCD in the Han Chinese population.
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