Publications by authors named "Ze-xuan Li"

Article Synopsis
  • The study explores how symptoms of depression and anxiety, particularly concerning sleep disturbances and psychic anxiety, impact cognitive performance in patients with Major Depressive Disorder (MDD).
  • Researchers conducted tests on 162 MDD patients and 142 healthy controls, finding that sleep issues negatively affected executive function and memory while psychomotor retardation influenced processing speed.
  • The results indicate that psychic anxiety plays a significant role in cognitive impairments across various domains, with sleep disturbances acting as a mediator between these anxiety symptoms and cognitive performance.
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Article Synopsis
  • The corticospinal tract (CST) is crucial for voluntary movement in vertebrates, and Netrin-1 serves as a key guidance molecule for axons crossing the midline during embryonic development.
  • Research using conditional knockout (CKO) mice revealed that the lack of Netrin-1 resulted in CST axons failing to cross over correctly and instead descending on the same side of the spinal cord.
  • These findings suggest a significant role of Netrin-1 in CST formation and provide new insights into its involvement in congenital mirror movements (CMM) due to abnormal CST trajectories.
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Introduction: Major depressive disorder (MDD) is associated with low-grade inflammation, and anti-inflammatory treatment can help improve depressive symptoms. A recent study found that fluvoxamine (FLV) can reduce Interleukin-6 (IL-6) production via sigma-1 receptor in inflammation models. However, the anti- IL-6 effect of FLV in treating patients with MDD and whether it can contribute to antidepressant effects remain unclear.

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The efficacy of traditional treatment for post-traumatic stress disorder (PTSD) is still unsatisfactory. Repetitive transcranial magnetic stimulation (rTMS) has been widely used in the treatment of various types of mental disorders, including PTSD. Although rTMS has been demonstrated to be effective in many cases, there are still arguments regarding its mechanism and protocol.

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Aims: This study assessed whether antidepressant drug treatment has a common effect on gray matter (GM) volume in MDD patients with and without childhood maltreatment (CM).

Methods: T1-weighted structural magnetic resonance imaging data were collected from 168 participants, including 51 MDD patients with CM, 31 MDD patients without CM, 48 normal controls with CM, and 38 normal controls without CM. MDD patients received 6 months of treatment with paroxetine, and 24 patients with CM, and 16 patients without CM received a second MRI scan.

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Background: White matter abnormalities can cause network dysfunction that underlies major depressive disorder (MDD). Diffusion tensor imaging (DTI) is used to examine the neural connectivity and integrity of the white matter. Previous studies have implicated frontolimbic neural networks in the pathophysiology of MDD.

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Objective: To explore the role of 5-HT and postsynaptic 5-HT1A receptors in the stress adaptation.

Methods: p-PCA was used to deplete the 5-HT in rats. The 5-HT1A agonist 8-OH-DPAT and antagonist WAY100635 were used to determine the effect of postsynaptic 5-HT1A receptors on the ratso behaviors in the Elevated Plus-Maze test, the Forced Swimming test, and the Morris Water Maze test.

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Objective: To investigate the prevalence of posttraumatic stress disorder (PTSD) among survivors from a coal mining accident after 2 and 10 months and factors related to PTSD.

Methods: To estimate the prevalence of PTSD, 104 miners were surveyed through the PTSD Checklist-Civilian Version (PCL-C). Forty survivors including 24 severe PTSD patients and 24 non-PTSD subjects were evaluated thoroughly.

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The purpose of this study was to determine the morphine-induced place preference in rats pre-exposed to footshock stress and corticosterone (CORT). The authors also studied the involvement of dopamine mechanisms in the CORT-induced place preference. The results showed that chronic footshock or CORT exposure but not acute footshock or CORT exposure similarly potentiated the conditioned place preference to morphine.

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It has been reported that some schizophrenic patients suffer from obsessive-compulsive symptoms (OCS), and clozapine treatment is quite often associated with an occurrence/increase of OCS in schizophrenic patients. The aim of the study was to explore whether differences would exist in the clinical symptomatology and the whole blood serotonin (5-HT) concentrations in patients with obsessive-compulsive disorder (OCD), schizophrenic patients with and without OCS (S+OCS, S-OCS), and clozapine-treated schizophrenic patients with and without clozapine-induced OCS (CLZ+OCS, CLZ-OCS). We found that S+OCS patients (n=15) showed significantly lower scores on the Hamilton Anxiety Scale (HAMA), but similar levels of compulsions and obsessions using Yale-Brown Obsessive-Compulsive Scale (YBOCS) as compared to the patients (n=35) with OCD.

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