Journal
ANNALS OF GENERAL PSYCHIATRY
Volume 15, Issue -, Pages -Publisher
BIOMED CENTRAL LTD
DOI: 10.1186/s12991-015-0084-9
Keywords
Brain-derived neurotrophic factor; 3-Methoxy-4-hydroxyphenylglycol; Chronic schizophrenia; Positive and negative symptoms score
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Background: We investigated the serum levels of brain-derived neurotrophic factor (BDNF), proBDNF and plasma 3-methoxy-4-hydroxyphenylglycol (MHPG) levels in patients with chronic schizophrenia. Methods: Sixty-eight patients who met the DSM-IV-TR criteria and had a chronic schizophrenia (CS) duration of >= 5 years were enrolled. Their serum brain-derived BDNF and proBDNF levels were measured by enzyme-linked immunosorbent assays, and their plasma MHPG levels were analyzed by high-performance liquid chromatography with electrochemical detection. Results: The plasma MHPG levels were significantly lower in the CS group (3.9 +/- 1.8 ng/ml) compared to those in the group of 32 age-and sex-matched healthy controls (5.1 +/- 2.4 ng/ml). The serum BDNF levels were significantly lower in the CS group (8.9 +/- 4.8 ng/ml) compared to the control group (12.2.1 +/- 6.8 ng/ml). No correlation was observed between plasma MHPG and BDNF in the CS group. Conclusion: These results suggest that hypo-activity of noradrenergic neurons and decreased BDNF secretion exist in chronic schizophrenic patients.
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