167 results on '"Xu, Xiangjun"'
Search Results
152. Influence of polarization of laser beam on emission intensity of nanosecond laser-induced breakdown spectroscopy.
- Author
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Chen, Guoyan, Wang, Qianqian, Teng, Geer, and Xu, Xiangjun
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- 2022
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153. 6th FESPIC games kicked off in Beijing
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Xu Xiangjun
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China -- Social aspects ,Disabled athletes -- Competitions ,Business - Abstract
The Sixth Far East and South Pacific Games for the Disabled (FESPIC) was inaugurated on Sep 4, 1994, with a grand opening ceremony performed before a 70,000-strong stadium audience. Several prominent persons, including Chinese Premier Li Peng, President of the International Paralympic Committee Robert Steadward and President of the FESPIC Games Harry Fang, attended the performance. About 1,400 athletes from 42 nations participated in the games.
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- 1994
154. Preparation, Characterization and Performance of a Novel Surfaceimprinting Polymer for the Adsorption of Dibenzothiophene.
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Huang, Weihong, Zhou, Wei, Xu, Wanzhen, Xu, Pingping, Xu, Xiangjun, and Yan, Yongsheng
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SURFACE analysis ,MOLECULAR imprinting ,ADSORPTION (Chemistry) ,ORGANOSULFUR compounds ,POTASSIUM compounds ,ELECTROSTATICS - Abstract
A novel surface-imprinting polymer (MIP/K2Ti6O13) was prepared using potassium hexatitanate whiskers (K2Ti6O13) as the carrier employing electrostatic interaction and π-π interaction between the template molecule [dibenzothiophene (DBT)] and the functional monomer [4-vinylpyridine (4VP)]. The synthetic polymer was characterized via Fourier-transform infrared (FT-IR) spectroscopy, surface area and porosity analysis, and X-ray diffraction (XRD). Static adsorption experiments were conducted to evaluate the adsorption kinetics, adsorption isotherms and adsorption selectivity of MIP/K2Ti6O13. Adsorption kinetic studies revealed that a contact time of 300 min was necessary to attain equilibrium. Adsorption isotherm studies indicated that the capacity of MIP/K2Ti6O13 towards the adsorption of DBT at 298 K, 308 K and 318 K was 16.18 mg/g, 22.74 mg/g and 29.89 mg/g, respectively. Selectivity experiments showed that the adsorption capacity of DBT on MIP/K2Ti6O13 was greater than for the other three analogues, while the imprinting factor towards DBT (α) was 2.06. [ABSTRACT FROM AUTHOR]
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- 2010
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155. On Influencing Factors of Sustainable Development of High-level Track and Fie Events in Colleges and Universities and Countermeasures.
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XU Xiangjun, WANG Jing, and GONG Xinqing
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- 2009
156. Neuropilins guide preganglionic sympathetic axons and chromaffin cell precursors to establish the adrenal medulla
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Rachael Lumb, Ceilidh Marchant, Andrew Joyce, Mathew Tata, Xiangjun Xu, Christiana Ruhrberg, Natasha L. Harvey, Quenten Schwarz, Lumb, Rachael, Tata, Mathew, Xu, Xiangjun, Joyce, Andrew, Marchant, Ceilidh, Harvey, Natasha, Ruhrberg, Christiana, and Schwarz, Quenten
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Male ,0301 basic medicine ,endocrine system ,Sympathetic Nervous System ,Neuropilins ,Chromaffin Cells ,Biology ,Mice ,03 medical and health sciences ,Semaphorin ,Cell Movement ,chromaffin cell ,medicine ,Autonomic nervous system ,Animals ,Molecular Biology ,Neural crest cell ,Adrenal gland ,adrenal gland ,Axon guidance ,Chromaffin cell ,autonomic nervous system ,Neural crest ,Axons ,Neuropilin-1 ,Neuropilin-2 ,Cell biology ,030104 developmental biology ,medicine.anatomical_structure ,Adrenal Medulla ,Neural Crest ,axonguidance ,Neuropilin ,Ganglia ,neuropilin ,neural crest cell ,Adrenal medulla ,Research Article ,Developmental Biology - Abstract
The adrenal medulla is composed of neuroendocrine chromaffin cells that secrete adrenaline into the systemic circulation to maintain physiological homeostasis and enable the autonomic stress response. How chromaffin cell precursors colonise the adrenal medulla and how they become connected to central nervous system-derived preganglionic sympathetic neurons remain largely unknown. By combining lineage tracing, gene expression studies, genetic ablation and the analysis of mouse mutants, we demonstrate that preganglionic axons direct chromaffin cell precursors into the adrenal primordia. We further show that preganglionic axons and chromaffin cell precursors require class 3 semaphorin (SEMA3) signalling through neuropilins (NRP) to target the adrenal medulla. Thus, SEMA3 proteins serve as guidance cues to control formation of the adrenal neuroendocrine system by establishing appropriate connections between preganglionic neurons and adrenal chromaffin cells that regulate the autonomic stress response., Summary: A new role is revealed for semaphorin/neuropilin signalling in guiding preganglionic sympathetic axons and chromaffin cell precursors into the adrenal primordia, ensuring correct regulation of the autonomic stress response.
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- 2018
157. Relationship between Vascular Resistance and Sympathetic Nerve Fiber Density in Arterial Vessels in Children With Sleep Disordered Breathing
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Xiangjun Xu, Declan Kennedy, Scott R. Willoughby, Quenten Schwarz, Melissa La Forgia, Kurt Lushington, Ryan Green, David Wabnitz, Elke M. Sokoya, Anna Kontos, Mathias Baumert, Antonio Ferrante, James Martin, Kontos, Anna, Lushington, Kurt, Martin, James, Schwarz, Quenten, Green, Ryan, Wabnitz, David, Xu, Xiangjun, Sokoya, Elke M, Willoughby, Scott, Baumert, Mathias, Ferrante, Antonio, La Forgia, Melissa, and Kennedy, Declan
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Male ,vasculature ,Sympathetic Nervous System ,Brachial Artery ,Platelet Aggregation ,Palatine Tonsil ,Fluorescent Antibody Technique ,Polysomnography ,030204 cardiovascular system & hematology ,Vascular Medicine ,flow‐mediated dilatation ,sleep disordered breathing ,0302 clinical medicine ,Vascular Disease ,Medicine ,Brachial artery ,Child ,Original Research ,Ultrasonography ,medicine.diagnostic_test ,Arteries ,Vasodilation ,medicine.anatomical_structure ,arterial stiffness ,Anesthesia ,Hypertension ,Female ,autonomic function ,Cardiology and Cardiovascular Medicine ,Pupillometry ,sympathetic nerve fibre density ,Blood Flow Velocity ,pediatrics ,Adolescent ,arterial blood flow ,shear stress ,03 medical and health sciences ,Sleep Apnea Syndromes ,Vascular Stiffness ,Vascular Biology ,medicine.artery ,flow mediated dilatation ,Humans ,Systole ,business.industry ,Pupil ,Blood flow ,sympathetic ,medicine.disease ,Atherosclerosis ,Regional Blood Flow ,Tonsil ,Arterial stiffness ,Vascular resistance ,Vascular Resistance ,business ,Adrenergic Fibers ,030217 neurology & neurosurgery - Abstract
Background Sleep disordered breathing in children is associated with increased blood flow velocity and sympathetic overactivity. Sympathetic overactivity results in peripheral vasoconstriction and reduced systemic vascular compliance, which increases blood flow velocity during systole. Augmented blood flow velocity is recognized to promote vascular remodeling. Importantly, increased vascular sympathetic nerve fiber density and innervation in early life plays a key role in the development of early‐onset hypertension in animal models. Examination of sympathetic nerve fiber density of the tonsillar arteries in children undergoing adenotonsillectomy for Sleep disordered breathing will address this question in humans. Methods and Results Thirteen children scheduled for adenotonsillectomy to treat sleep disordered breathing underwent pupillometry, polysomnography, flow‐mediated dilation, resting brachial artery blood flow velocity (velocity time integral), and platelet aggregation. The dorsal lingual artery (tonsil) was stained and immunofluorescence techniques used to determine sympathetic nerve fiber density. Sympathetic nerve fiber density was correlated with increased resting velocity time integral ( r =0.63; P r =−0.71, P r =−0.64; P r =−0.77; P r =0.64; P P P Conclusions These results indicate that sympathetic activity is associated with change in both the function and structure of systemic vasculature in children with sleep disordered breathing.
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- 2017
158. 14-3-3ζ deficient mice in the BALB/c background display behavioural and anatomical defects associated with neurodevelopmental disorders
- Author
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Clare L. Parish, Quenten Schwarz, Xiangjun Xu, Peter McCarthy, Matilda Haas, Eiman Saleh, Julian Ik-Tsen Heng, Bernhard T. Baune, Zarina Greenberg, Hayley S. Ramshaw, Angel F. Lopez, Emily J. Jaehne, Maarten van den Buuse, Udani Ratnayake, Daria Camera, Xu, Xiangjun, Jaehne, Emily J, Greenberg, Zarina, McCarthy, Peter, Saleh, Eiman, Parish, Clare L, Camera, Daria, Heng, Julian, Haas, Matilda, Baune, Bernhard T, Ratnayake, Udani, Van den Buuse, Maarten, Lopez, Angel F, Ramshaw, Hayley S, and Schwarz, Quenten
- Subjects
Male ,Dopamine ,14-3-3 zeta ,Congenic ,Gene Expression ,Hippocampus ,Hippocampal formation ,Article ,BALB/c ,Mice ,Lateral ventricles ,Lateral Ventricles ,medicine ,Animals ,Maze Learning ,Spatial Memory ,Dopamine transporter ,Mice, Knockout ,cognitive defects ,Dopamine Plasma Membrane Transport Proteins ,Mice, Inbred BALB C ,Multidisciplinary ,biology ,neurodevelopmental disorders ,Pyramidal Cells ,epistatic interactions ,biology.organism_classification ,Disease Models, Animal ,14-3-3 Proteins ,Mossy Fibers, Hippocampal ,Immunology ,Knockout mouse ,Schizophrenia ,biology.protein ,Female ,Neuroscience ,Signal Transduction ,medicine.drug - Abstract
Sequencing and expression analyses implicate 14-3-3ζ as a genetic risk factor for neurodevelopmental disorders such as schizophrenia and autism. In support of this notion, we recently found that 14-3-3ζ−/− mice in the Sv/129 background display schizophrenia-like defects. As epistatic interactions play a significant role in disease pathogenesis we generated a new congenic strain in the BALB/c background to determine the impact of genetic interactions on the 14-3-3ζ−/− phenotype. In addition to replicating defects such as aberrant mossy fibre connectivity and impaired spatial memory, our analysis of 14-3-3ζ−/− BALB/c mice identified enlarged lateral ventricles, reduced synaptic density and ectopically positioned pyramidal neurons in all subfields of the hippocampus. In contrast to our previous analyses, 14-3-3ζ−/− BALB/c mice lacked locomotor hyperactivity that was underscored by normal levels of the dopamine transporter (DAT) and dopamine signalling. Taken together, our results demonstrate that dysfunction of 14-3-3ζ gives rise to many of the pathological hallmarks associated with the human condition. 14-3-3ζ-deficient BALB/c mice therefore provide a novel model to address the underlying biology of structural defects affecting the hippocampus and ventricle and cognitive defects such as hippocampal-dependent learning and memory.
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- 2015
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159. In-vivo administration of clozapine affects behaviour but does not reverse dendritic spine deficits in the 14-3-3ζ KO mouse model of schizophrenia-like disorders
- Author
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Scott R. Clark, Angel F. Lopez, Eiman Saleh, Quenten Schwarz, Klaus Oliver Schubert, Xiangjun Xu, Emily J. Jaehne, Hayley S. Ramshaw, Bernhard T. Baune, Jaehne, Emily J., Ramshaw, Hayley Suzanne, Xu, Xiangjun, Saleh, Eiman, Clark, Scott A., Schubert, Klaus Oliver, Lopez, Angel, Schwarz, Quenten Philip, and Baune, Bernhard T.
- Subjects
cognition ,medicine.medical_specialty ,Dendritic spine ,medicine.drug_class ,Dendritic Spines ,Clinical Biochemistry ,Emotions ,Atypical antipsychotic ,Hippocampal formation ,Anxiety ,Toxicology ,Biochemistry ,14-3-3ζ ,Behavioral Neuroscience ,Mice ,Cognition ,In vivo ,Internal medicine ,medicine ,Animals ,Clozapine ,Biological Psychiatry ,Pharmacology ,Mice, Knockout ,clozapine ,Behavior, Animal ,Depression ,Brain ,dendritic spines ,anxiety ,medicine.disease ,Endocrinology ,14-3-3 Proteins ,Schizophrenia ,depression ,Schizophrenic Psychology ,medicine.symptom ,Psychology ,Neuroscience ,Behavioural despair test ,medicine.drug ,Antipsychotic Agents - Abstract
Clozapine is an atypical antipsychotic drug used in the treatment of schizophrenia, which has been shown to reverse behavioural and dendritic spine deficits in mice. It has recently been shown that deficiency of 14-3-3ζ has an association with schizophrenia, and that a mouse model lacking this protein displays several schizophrenia-like behavioural deficits. To test the effect of clozapine in this mouse model, 14-3-3ζ KO mice were administered clozapine (5 mg/kg) for two weeks prior to being analysed in a test battery of cognition, anxiety, and despair (depression-like) behaviours. Following behavioural testing brain samples were collected for analysis of specific anatomical defects and dendritic spine formation. We found that clozapine reduced despair behaviour of 14-3-3ζ KO mice in the forced swim test (FST) and altered the behaviour of wild types and 14-3-3ζ KO mice in the Y-maze task. In contrast, clozapine had no effects on hippocampal laminar defects or decreased dendritic spine density observed in 14-3-3ζ KO mice. Our results suggest that clozapine may have beneficial effects on clinical behaviours associated with deficiencies in the 14-3-3ζ molecular pathway, despite having no effects on morphological defects. These findings may provide mechanistic insight to the action of this drug. Refereed/Peer-reviewed
- Published
- 2015
160. Incidence, predictors, and outcomes of malignant cerebral edema in acute basilar artery occlusion after endovascular treatment: a secondary analysis of the ATTENTION trial.
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Huang X, Wang H, Ji Y, Tao C, Shang X, Ni C, Xu J, Xu X, Hu W, and Zhou Z
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- Humans, Male, Female, Middle Aged, Aged, Incidence, Treatment Outcome, Vertebrobasilar Insufficiency surgery, Vertebrobasilar Insufficiency complications, Prospective Studies, Postoperative Complications epidemiology, Postoperative Complications etiology, China epidemiology, Retrospective Studies, Glasgow Coma Scale, Endovascular Procedures, Brain Edema etiology, Brain Edema epidemiology
- Abstract
Objective: Malignant cerebral edema (MCE) is a life-threatening complication of ischemic stroke. Few studies have evaluated MCE in patients with acute basilar artery occlusion (BAO) receiving endovascular treatment (EVT). Therefore, the authors investigated the incidence, predictors, and functional outcomes of MCE in BAO patients undergoing EVT., Methods: This was a post hoc analysis of the Endovascular Treatment for Acute Basilar Artery Occlusion (ATTENTION) trial, a prospective, randomized, multicenter clinical trial that compared endovascular treatment with conventional care of patients with BAO at 36 centers in China. Brain edema was retrospectively assessed using the Jauss score for all available follow-up scans, and patients with a Jauss score ≥ 4 were classified as having MCE. Clinical functional independence was defined as a modified Rankin Scale (mRS) score of 0-2, and a good outcome was defined as an mRS score of 0-3 at the 90-day follow-up. Univariate and multivariate analyses were used to explore the predictors of MCE and the impact of MCE on prognosis., Results: A total of 189 patients were analyzed, and 13.2% of patients developed MCE. Multivariate analysis showed that the baseline Glasgow Coma Scale (GCS) score (OR 0.722, 95% CI 0.548-0.950; p = 0.020) and the number of procedures (OR 1.594, 95% CI 1.051-2.419; p = 0.028) were significantly associated with MCE. After adjusting for confounding factors, the presence of MCE was significantly associated with a lower rate of functional independence (OR 0.115, 95% CI 0.023-0.563; p = 0.008), a lower rate of good outcome (OR 0.092, 95% CI 0.023-0.360; p = 0.001), and a higher rate of mortality (OR 5.373, 95% CI 2.055-14.052; p = 0.001) at the 90-day follow-up., Conclusions: MCE is not uncommon in BAO patients undergoing EVT and is associated with poor outcomes. Baseline GCS score and the number of procedures were predictors of MCE. In clinical practice, it is crucial that physicians identifying MCE after EVT in patients with BAO and identification of MCE will help in the selection of an appropriate pharmacological treatment strategy and close monitoring.
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- 2024
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161. Modulate the laser phase to improve the ns-LIBS spectrum signal based on orbital angular momentum.
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Bao M, Zhao Z, Wei K, Zheng Y, Lu B, Xu X, Luo T, Teng G, Yong J, and Wang Q
- Abstract
Aiming to enhance the ns-LIBS signal, in this work, we introduced orbital angular momentum to modulate the laser phase of the Gaussian beam into the vortex beam. Under similar incident laser energy, the vortex beam promoted more uniform ablation and more ablation mass compared to the Gaussian beam, leading to elevated temperature and electron density in the laser-induced plasma. Consequently, the intensity of the ns-LIBS signal was improved. The enhancement effects based on the laser phase modulation were investigated on both metallic and non-metallic samples. The results showed that laser phase modulation resulted in a maximum 1.26-times increase in the peak intensities and a maximum 1.25-times increase in the signal-to-background ratio (SBR) of the Cu spectral lines of pure copper for a laser energy of 10 mJ. The peak intensities of Si atomic spectral lines were enhanced by 1.58-1.94 times using the vortex beam. Throughout the plasma evolution process, the plasma induced by the vortex beam exhibited prolonged duration and a longer continuous background, accompanied by a noticeable reduction in the relative standard deviation (RSD). The experimental results demonstrated that modulation the laser phase based on orbital angular momentum is a promising approach to enhancing the ns-LIBS signal.
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- 2024
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162. Impact of the COVID-19 pandemic and post-epidemic periods on the process of endovascular treatment for acute anterior circulation ischaemic stroke.
- Author
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Zhang T, Chen C, Xu X, Xu J, Yang K, Xu Y, Yuan L, Yang Q, Huang X, and Zhou Z
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- Aged, Aged, 80 and over, Brain Ischemia therapy, Female, Humans, Male, Middle Aged, Reperfusion methods, Retrospective Studies, Treatment Outcome, COVID-19, Endovascular Procedures methods, Ischemic Stroke therapy
- Abstract
Background and Purpose: The purpose of our study was to analyse endovascular treatment (EVT) in patients presenting acute anterior circulation ischemic stroke with large-vessel occlusion (AIS-LVO) during the pandemic and post-epidemic periods., Methods: Patients with AIS-LVO of the anterior circulation who underwent EVT were enrolled. According to the times of Wuhan closure and reopening, patients were divided into a pre-pandemic group (from November 8, 2019, to January 22, 2020), pandemic group (from January 23, 2020, to April 8, 2020) and post-epidemic group (from April 9, 2020, to June 24, 2020). The primary endpoints were the time delay among symptom onset to arriving hospital door, to groining puncture and to vascular reperfusion. Secondary endpoints were the functional outcomes evaluated by 90-day modified Rankin scale (mRS) score., Results: In total, the times from onset to reperfusion (OTR, median 356 min vs. 310 min, p = 0.041) and onset to door (OTD, median 238 min vs. 167 min, p = 0.017) were prolonged in the pandemic group compared to the pre-pandemic group, and the delay continue in the post-epidemic period. In the subgroup analysis, the time from door to imaging (DTI) was significantly prolonged during the pandemic period. Interestingly, the prolonged DTI was corrected in the directly admitted subgroup during post-epidemic period. In addition, the functional outcomes showed no significant differences across the three periods., Conclusions: Total time and prehospital time were prolonged during the pandemic and post-epidemic periods. Urgent public education and improved in-hospital screening processes are necessary to decrease time delays.
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- 2021
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163. Altered attention networks in patients with thyroid dysfunction: A neuropsychological study.
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Yuan L, Luan D, Xu X, Yang Q, Huang X, Zhao S, Zhang Y, and Zhou Z
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- Adult, Anxiety etiology, Anxiety physiopathology, Anxiety psychology, Anxiety Disorders etiology, Anxiety Disorders physiopathology, Anxiety Disorders psychology, Attention Deficit Disorder with Hyperactivity physiopathology, Attention Deficit Disorder with Hyperactivity psychology, Case-Control Studies, Executive Function physiology, Female, Humans, Hyperthyroidism complications, Hyperthyroidism physiopathology, Hyperthyroidism psychology, Hypothyroidism complications, Hypothyroidism physiopathology, Hypothyroidism psychology, Male, Middle Aged, Thyroid Diseases physiopathology, Young Adult, Attention physiology, Attention Deficit Disorder with Hyperactivity etiology, Nerve Net physiopathology, Thyroid Diseases complications, Thyroid Diseases psychology
- Abstract
Patients with thyroid dysfunction (31 hypothyroid, 32 subclinical hypothyroidism, 34 hyperthyroid, and 30 subclinical hyperthyroidism) and 37 euthyroid control subjects were recruited and performed the attention network test (ANT), which can simultaneously examine the alertness, orientation and execution control of the participants. Patients with hypothyroidism had abnormalities in the alerting network, and those with hyperthyroidism had impairments of the alerting and executive control networks. No attention networks deficit existed in patients with subclinical hyperthyroidism and subclinical hypothyroidism. The anxiety and depression scores of patients with thyroid dysfunction were significantly higher than those of the healthy control group. Covariance analysis demonstrated that interactions between group and Hamilton Anxiety Scale scores, group and HAMD score were not significant, but there was a significant main effect for group when analyzing the difference in values of the alerting network between groups. Further, the efficiency of the executive control network was negatively correlated with the T4 level in the hypothyroidism group, and positively correlated with the T4 level in the hyperthyroidism group. T4 or T3 level and efficiencies of the executive control network had a significant quadratic U-shaped relationship in all participants. In summary, the patients with four kinds of thyroid dysfunction exhibited different characteristics of ANT performance. Patients with thyroid dysfunction had various degrees of anxiety and depression disorders, but anxiety and depression disorders had no effect on the differences in the executive control network between the groups., Competing Interests: Declaration of competing interest The authors declared no conflict of interest., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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164. Topography of the hyperintense vessel sign on fluid-attenuated inversion recovery represents cerebral hemodynamics in middle cerebral artery occlusion: a CT perfusion study.
- Author
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Huang X, Shi X, Yang Q, Zhou Y, Xu X, Xu J, Ding X, and Zhou Z
- Subjects
- Acute Disease, Aged, Female, Humans, Image Enhancement, Image Interpretation, Computer-Assisted, Magnetic Resonance Angiography, Male, Middle Aged, Middle Cerebral Artery diagnostic imaging, Retrospective Studies, Sensitivity and Specificity, Cerebral Angiography, Computed Tomography Angiography, Hemodynamics physiology, Infarction, Middle Cerebral Artery diagnostic imaging, Perfusion Imaging methods
- Abstract
Purpose: Whether the topography of fluid-attenuated inversion recovery hyperintense vessel sign (FHVs) can serve as a measure of cerebral hemodynamic stress remains unclear. We hypothesized that FHVs topography represents different cerebral hemodynamic status, as assessed by CT perfusion (CTP)., Methods: We retrospectively reviewed 75 patients with acute middle cerebral artery (MCA) occlusion who underwent MR imaging and CTP. The FHVs topography included FHVs inside the diffusion-weighted imaging (DWI) lesion (FHVs in-group), FHVs outside the DWI lesion (FHVs out-group), and FHVs distributed inside and outside the DWI lesion (FHVs all-group). FHVs scores were assessed by the Alberta stroke program early computed tomography score (ASPECT) territories. Cerebral hemodynamic status was evaluated by relative (r) CTP parameters. Cerebral hemodynamic status was analyzed with respect to different FHVs topographies and FHVs scores., Results: Hemodynamic impairment was present in all patients, with the following mean rCTP parameters: rCBF, 0.77 ± 0.23; rCBV, 1.06 ± 0.32; and rMTT, 1.52 ± 0.60. Comparison of the rCTP parameters among the three groups, rCBF and rCBV (rCBF, P < 0.001; rCBV, P < 0.001) in the FHVs out-group and the FHVs all-group (rCBF, P = 0.001; rCBV, P < 0.001), were significantly higher than that in the FHVs in-group. Similarly, CTA collateral grade in the FHVs in-group was significantly lower than those in the FHVs out-group and FHVs all-group (P < 0.001). No significant difference was found in rCTP parameters between different FHVs scores., Conclusion: The different FHVs topographies represented different cerebral hemodynamic status. FHVs topography may serve as a surrogate for patient selection for reperfusion therapy whenever perfusion data are unavailable.
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- 2019
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165. Impaired theory of mind in Chinese children and adolescents with idiopathic generalized epilepsy: Association with behavioral manifestations of executive dysfunction.
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Zhang T, Chen L, Wang Y, Zhang M, Wang L, Xu X, Xiao G, Chen J, Shen Y, and Zhou N
- Subjects
- Adolescent, Child, Cognition, Cognition Disorders diagnosis, Cognition Disorders etiology, Emotions, Epilepsy, Generalized complications, Female, Humans, Inhibition, Psychological, Male, Neuropsychological Tests, Cognition Disorders physiopathology, Epilepsy, Generalized physiopathology, Epilepsy, Generalized psychology, Executive Function physiology, Memory, Short-Term physiology, Theory of Mind physiology
- Abstract
Background: Epilepsy is a common neurological disorder with a core feature of cognitive impairments. Previous studies showed that patients with focal epilepsy have deficits in both theory of mind (ToM) and executive function (EF). However, there are few studies of ToM in patients with idiopathic generalized epilepsy (IGE), especially in populations with pediatric epilepsy. The aim of this study was to examine the characteristics of ToM and EF, including some of their subcomponents, and explore the relationship between them in Chinese children with IGE., Materials and Methods: We recruited 54 children and adolescents with IGE as the experimental subjects and 37 typically developing children and adolescents as control subjects. Both groups completed ToM tests, namely, second-order false belief tasks (FBTs) and faux pas tasks (FPTs). Their caregivers completed the Behavior Rating Inventory of Executive Function (BRIEF) at the same time., Results: Children and adolescents with IGE displayed worse performance on some of the FBTs and FPTs than healthy controls (p<0.01). They also exhibited widespread EF deficits, comprising eight subcomponents (p<0.05). Pearson's correlation analysis revealed that several subcomponents of EF (inhibition, emotional control, initiation, working memory, and monitoring) were unequally correlated with FBT and FPT. Regression analysis showed that ToM had associations with inhibition, working memory, and duration of seizures. Analysis of variance (ANOVA) indicated that children with newly diagnosed epilepsy displayed significant deficits in FBT, FPT, and distinct subscales of EF., Conclusions: Our results revealed significant impairments in ToM and EF in children and adolescents with IGE compared with healthy controls. We found significant correlations between ToM and two subcomponents of EF (inhibition and working memory) in children with IGE. Additionally, the duration of seizures affected ToM in patients but was a less powerful predictor than the two subcomponents of EF. Even for children with new-onset seizures and without medication, the deficits in ToM and some distinct subscales of EF were apparent. This result has clinical implications for both nonpharmaceutical therapies and cognitive rehabilitation., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2018
- Full Text
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166. Subjective sleep disturbance in Chinese adults with epilepsy: Associations with affective symptoms.
- Author
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Shen Y, Zhang M, Wang Y, Wang L, Xu X, Xiao G, Chen J, Zhang T, and Zhou N
- Subjects
- Adult, Anticonvulsants therapeutic use, Anxiety complications, Cross-Sectional Studies, Depression complications, Epilepsy drug therapy, Epilepsy physiopathology, Female, Humans, Male, Psychiatric Status Rating Scales, Regression Analysis, Self Report, Severity of Illness Index, Sleep drug effects, Sleep Initiation and Maintenance Disorders physiopathology, Affective Symptoms, Epilepsy complications, Epilepsy psychology, Sleep Initiation and Maintenance Disorders complications, Sleep Initiation and Maintenance Disorders psychology
- Abstract
Background: As well as being a very common neurological disease worldwide, epilepsy significantly impairs patients' emotional, behavioral, and cognitive functioning. Sleep disturbances are the most frequent complaint in patients with epilepsy. The present study assesses the impact of a range of affective symptoms on subjective sleep quality and sleep disturbances in Chinese adults with epilepsy., Methods: Adults with epilepsy who visited our epilepsy clinic from July 2015 to March 2016 were enrolled in our study. Both patients and healthy controls completed the Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), Insomnia Severity Index (ISI), Beck Depression Inventory-II (BDI-II), Beck Anxiety Inventory (BAI), and Mini-mental State Examination (MMSE). Subjective sleep quality and sleep disturbances were examined with regard to self-reported symptoms of depression and anxiety, seizure-related factors, and demographic factors., Results: The PSQI scores and ISI scores of patients were significantly higher (indicating lower quality sleep and more serious insomnia) than those of the control group. Symptoms associated with depression and anxiety were independently related to impaired subjective sleep quality and insomnia. Affective symptoms explained more of the variance in PSQI scores and ISI scores than did seizure-related or demographic variables. In addition, these variables also seemed to be less powerful contributing factors to subjective sleep quality and insomnia than affective symptoms, several seizure-related factors, such as seizure control, partial seizures and duration of epilepsy, which are also significantly associated with subjective sleep quality and insomnia. In addition, use of lamotrigine (LTG) was also associated with insomnia and use of clonazepam (CZP) and phenobarbital (PB) with daytime sleepiness in patients with epilepsy., Conclusion: Chinese adults with epilepsy have poorer self-reported subjective sleep quality and a higher prevalence of insomnia than the control group. Depressive- and anxiety-related symptoms independently exert an adverse effect on the subjective sleep quality and insomnia of patients. In addition, seizure control, partial seizures, and the duration of epilepsy affect the quality of sleep and insomnia in patients, but seem less powerful predictors of sleep quality and insomnia than affective symptoms. Early identification and treatment of affective symptoms is of great importance in improving the sleep quality and insomnia of patients with epilepsy., (Copyright © 2017 Elsevier B.V. All rights reserved.)
- Published
- 2017
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167. In-vivo administration of clozapine affects behaviour but does not reverse dendritic spine deficits in the 14-3-3ζ KO mouse model of schizophrenia-like disorders.
- Author
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Jaehne EJ, Ramshaw H, Xu X, Saleh E, Clark SR, Schubert KO, Lopez A, Schwarz Q, and Baune BT
- Subjects
- Animals, Anxiety psychology, Brain pathology, Cognition, Depression psychology, Emotions, Mice, Mice, Knockout, Schizophrenia pathology, 14-3-3 Proteins drug effects, 14-3-3 Proteins genetics, Antipsychotic Agents pharmacology, Behavior, Animal drug effects, Clozapine pharmacology, Dendritic Spines drug effects, Schizophrenia drug therapy, Schizophrenia genetics, Schizophrenic Psychology
- Abstract
Clozapine is an atypical antipsychotic drug used in the treatment of schizophrenia, which has been shown to reverse behavioural and dendritic spine deficits in mice. It has recently been shown that deficiency of 14-3-3ζ has an association with schizophrenia, and that a mouse model lacking this protein displays several schizophrenia-like behavioural deficits. To test the effect of clozapine in this mouse model, 14-3-3ζ KO mice were administered clozapine (5mg/kg) for two weeks prior to being analysed in a test battery of cognition, anxiety, and despair (depression-like) behaviours. Following behavioural testing brain samples were collected for analysis of specific anatomical defects and dendritic spine formation. We found that clozapine reduced despair behaviour of 14-3-3ζ KO mice in the forced swim test (FST) and altered the behaviour of wild types and 14-3-3ζ KO mice in the Y-maze task. In contrast, clozapine had no effects on hippocampal laminar defects or decreased dendritic spine density observed in 14-3-3ζ KO mice. Our results suggest that clozapine may have beneficial effects on clinical behaviours associated with deficiencies in the 14-3-3ζ molecular pathway, despite having no effects on morphological defects. These findings may provide mechanistic insight to the action of this drug., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
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