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Tryptophan hydroxylase-2 polymorphism is associated with white matter integrity in first-episode, medication-naive major depressive disorder patients

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机构: [1]Department of Psychiatry, First Affiliated Hospital of Kunming Medical University, No. 295 Xichang RD, Kunming 650032, Kunming, Yunnan, China [2]Department of Rheumatology and Immunology, First Affiliated Hospital of Kunming Medical Unversity, Kunming, Yunnan, China [3]Imaging Center, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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关键词: TPH2 Major depressive disorder TBSS White matter

摘要:
Considerable evidence suggests that the tryptophan hydroxylase-2 (TPH2) gene is associated with the pathophysiology of major depressive disorder (MDD). In the present study, we investigated alterations of white matter (WM) integrity and the impact of TPH2 polymorphism on WM in a sample of 118 first-episode, medication-naive, MDD patients and 118 well-matched healthy controls. Whole brain analyses of fractional anisotropy (FA) were performed using tract-based spatial statistics (TBSS). The results showed that the MDD group had significantly reduced FA values for the genu and body of the corpus callosum (CC) and the bilateral anterior corona radiate (ACR). In the MDD patient group, the GG homozygote subgroup exhibited a widespread reduction of FA (uncorrected) and significantly reduced FA in the left retrolenticular portion of the internal capsule and left superior longitudinal fasciculus (SLF) compared with those of the T carriers (GT/TT) (FWE corrected). No significant correlation was found between the FA values in any brain region and the patients' clinical variables. Our findings demonstrate the presence of abnormal white matter integrity in untreated patients with first-episode depression. TPH2-rs4570625 polymorphisms may be involved in the pathological mechanism of WM micro-architecture in patients.

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出版当年[2020]版:
大类 | 4 区 医学
小类 | 4 区 临床神经病学 4 区 神经成像 4 区 精神病学
最新[2023]版:
大类 | 4 区 医学
小类 | 4 区 临床神经病学 4 区 神经成像 4 区 精神病学
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出版当年[2019]版:
Q3 CLINICAL NEUROLOGY Q3 PSYCHIATRY Q4 NEUROIMAGING
最新[2023]版:
Q3 CLINICAL NEUROLOGY Q3 PSYCHIATRY Q3 NEUROIMAGING

影响因子: 最新[2023版] 最新五年平均 出版当年[2019版] 出版当年五年平均 出版前一年[2018版] 出版后一年[2020版]

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第一作者机构: [1]Department of Psychiatry, First Affiliated Hospital of Kunming Medical University, No. 295 Xichang RD, Kunming 650032, Kunming, Yunnan, China
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