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Caveolin‑1 is critical for hepatic iron storage capacity in the development of nonalcoholic fatty liver disease

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Military Medical Research 2024年第2期11卷 206-227页

作者： Guang-hui Deng Chao-Feng Wu Yun-Jia Li Hao Shi Wei-Chao Zhong Mu-Keng Hong Jun-Jie Li Jia-min Zhao Chang Liu Meng-Chen Qin Zhi-Yun Zeng Wei-min Zhang Ken Kin Lam Yung Zhi-Ping Lv Lei Gao Department of Gastroenterology Integrated Hospital of Traditional Chinese MedicineSouthern Medical UniversityGuangzhou 510315China School of Traditional chinese Medicine Southern Medical UniversityGuangzhou 510515China Department of Hepatology Cancer CenterIntegrated Hospital of Traditional Chinese MedicineSouthern Medical UniversityGuangzhou 510315China Shenzhen Traditional chinese Medicine Hospital Shenzhen 518033GuangdongChina Department of Biology Hong Kong Baptist UniversityKowloon TongKowloonHong Kong SAR 999077China

Background:Nonalcoholic fatty liver disease(NAFLD)is associated with disordered lipid and iron *** previous study has substantiated the pivotal role of Caveolin-1(Cav-1)in protecting hepatocytes and mediating iron metabolism in the *** study aimed to explore the specific mechanisms underlying the regulation of iron metabolism by Cav-1 in ***:Hepatocyte-specific Cav-1 overexpression mice and knockout mice were used in this ***-1-knockdown of RAW264.7 cells and mouse primary hepatocytes were performed to verify the changes in ***,a high-fat diet and palmitic acid plus oleic acid treatment were utilized to construct a NAFLD model in vivo and in vitro,respectively,while a high-iron diet was used to construct an in vivo iron overload ***,iron concentration,the expression of Cav-1 and iron metabolism-related proteins in liver tissue or serum were detected using iron assay kit,Prussian blue staining,Western blotting,immunofluorescence staining,immunohistochemical staining and *** related indicators of lipid metabolism and oxidative stress were evaluated by the corresponding reagent kit and ***:Significant disorder of lipid and iron metabolism occurred in *** expression of Cav-1 was decreased in NAFLD hepatocytes(P<0.05),accompanied by iron metabolism ***-1 enhanced the iron storage capacity of hepatocytes by activating the ferritin light chain/ferritin heavy chain pathway in NAFLD,subsequently alleviating the oxidative stress induced by excess ferrous ions in the ***,CD68^(+) CD163^(+) macrophages expressing Cav-1 were found to accelerate iron accumulation in the liver,which was contrary to the effect of Cav-1 in *** correlations were also observed between the serum Cav-1 concentration and the serum iron-related protein levels in NAFLD patients and healthy volunteers(P<0.05).Conclusions:These findings confirm that Cav-1 is an essential target protein that reg

关键词： Caveolin-1 Nonalcoholic fatty liver disease Iron metabolism Ferritin Oxidative stress

Engineering surface framework TiO6 single sites for unprecedented deep oxidative desulfurization

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National Science Review 2024年第5期11卷 303-314页

作者： Shen Yu Zhan Liu Jia-min Lyu Chun-Mu Guo Xiao-Yu Yang Peng Jiang Yi-Long Wang Zhi-Yi Hu ming-hui Sun Yu Li Li-Hua Chen Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Nanostructure Research Center Wuhan University of Technology School of Chemistry Chemical Engineering and Life ScienceWuhan University of Technology Laboratory of Inorganic Materials Chemistry University of Namur

Catalytic oxidative desulfurization（ODS） using titanium silicate catalysts has emerged as an efficient technique for the complete removal of organosulfur compounds from automotive fuels. However, the precise control of highly accessible and stable-framework Ti active sites remains highly challenging. Here we reveal for the first time by using density functional theory calculations that framework hexa-coordinated Ti（TiO6） species of mesoporous titanium silicates are the most active sites for ODS and lead to a lower-energy pathway of ODS. A novel method to achieve highly accessible and homogeneously distributed framework TiO6active single sites at the mesoporous surface has been developed. Such surface framework TiO6species exhibit an exceptional ODS performance. A removal of 920 ppm of benzothiophene is achieved at60°C in 60 min, which is 1.67 times that of the best catalyst reported so far. For bulky molecules such as4,6-dimethyldibenzothiophene（DMDBT）, it takes only 3 min to remove 500 ppm of DMDBT at 60°C with our catalyst, which is five times faster than that with the current best catalyst. Such a catalyst can be easily upscaled and could be used for concrete industrial application in the ODS of bulky organosulfur compounds with minimized energy consumption and high reaction efficiency.

关键词： electrostatic interactions framework hexa-coordinated Ti site oxidative desulfurization mesoporous materials self-assembly

Association of serum interleukin-6 with negative symptoms in stable early-onset schizophrenia

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World Journal of Psychiatry 2024年第6期14卷 794-803页

作者： Peng Chen Hai-Dong Yang Jun-Jie Wang Zhen-Hua Zhu hui-min Zhao Xu-Yuan Yin Yuan Cai Hong-LiangZhu Jia-Lin Fu Xin-Zhu Zhang Wen-Xi Sun Li hui Xiao-Bin Zhang Suzhou Medical College of Soochow University Suzhou 215123Jiangsu ProvinceChina Department of Psychiatry Suzhou Psychiatric HospitalInstitute of Mental HealthThe Affiliated Guangji Hospital of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina Department of Psychiatry The Fourth People’s Hospital of LianyungangThe Affiliated Kangda College of Nanjing Medical UniversityLianyungang 222003Jiangsu ProvinceChina Research Center of Biological Psychiatry Suzhou Psychiatric HospitalInstitute of Mental HealthThe Affiliated Guangji Hospital of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina Department of Neurology The Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhou 215002Jiangsu ProvinceChina

BACKGROUND Accumulating evidence suggests that the inflammatory cytokine interleukin-6(IL-6)contributes to the pathophysiology of psychiatric ***,there was no study concerning the relationship between IL-6 concentrations and clinical features in the chronic phase of early-onset schizophrenia(EOS).AIM To investigate the relationship between serum IL-6 concentration and the clinical features of *** We measured serum IL-6 Levels from 74 patients with chronic schizophrenia,including 33 with age at onsetchizophrenia(AOS)group],and from 41 healthy *** severities were evaluated using the Positive and Negative Syndrome Scale(PANSS).RESULTS Serum IL-6 concentrations were higher in both EOS and AOS groups than healthy controls(F=22.32,P0.05)after controlling for age,body mass index,and other *** symptom scores were higher in the EOS group than the AOS group(F=6.199,P=0.015).Serum IL-6 concentrations in the EOS group were negatively correlated with both total PANSS-negative symptom score(r=-0.389,P=0.032)and avolition/asociality subscore(r=-0.387,P=0.026).CONCLUSION Patients with EOS may have more severe negative symptoms than those with adult-onset schizophrenia during the chronic phase of the ***-6 signaling may regulate negative symptoms and its avolition/asociality subsymptoms among the early-onset chronic schizophrenic patients.

关键词： Early-onset schizophrenia Interleukin 6 Negative symptoms Avolition Asociality

Differential diagnosis of gastric submucosal masses and external pressure lesions

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World Journal of Gastrointestinal Surgery 2024年第10期16卷 3374-3376页

作者： Ying Na Xiang-Dong Liu hui-min Xu Department of Medical Imaging Weifang People's HospitalWeifang 261041Shandong ProvinceChina Department of General Surgery Weifang People's HospitalWeifang 261041Shandong ProvinceChina

Lesions of the left triangular ligament of the liver are rare,and there are even fewer cases of vascular tumors misdiagnosed as gastrointestinal stromal *** comment on the two cases reported in the *** article did not include pictures of laparoscopic surgery,making it *** gastric submucosal lesions,enhanced computed tomography venous phase imaging may be beneficial for differential *** endoscopic ultrasound is an effective tool for diagnosing submucosal lesions of the stomach,due to various factors,it cannot achieve an accurate *** endoscopic examination,a more accurate diagnosis can be made depending on the personal experience of the operators.

关键词： Differential diagnosis Gastric submucosal masses External pressure lesions Endoscopic ultrasonography Computed tomography

Influence of network structure on spreading dynamics via tie range

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chinese Physics B 2024年第8期33卷 606-613页

作者：李敏宋玉蓉宋波李汝琦蒋国平张晖 College of Automation and College of Artificial Intelligence Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Modern Posts Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing 210023China Full Truck Alliance Co.Ltd. Nanjing 210012China

There are various phenomena of malicious information spreading in the real society, which cause many negative impacts on the society. In order to better control the spreading, it is crucial to reveal the influence of network structure on network spreading. Motifs, as fundamental structures within a network, play a significant role in spreading. Therefore, it is of interest to investigate the influence of the structural characteristics of basic network motifs on spreading *** the edges of the basic network motifs in an undirected network correspond to different tie ranges, two edge removal strategies are proposed, short ties priority removal strategy and long ties priority removal strategy. The tie range represents the second shortest path length between two connected nodes. The study focuses on analyzing how the proposed strategies impact network spreading and network structure, as well as examining the influence of network structure on network spreading. Our findings indicate that the long ties priority removal strategy is most effective in controlling network spreading, especially in terms of spread range and spread velocity. In terms of network structure, the clustering coefficient and the diameter of network also have an effect on the network spreading, and the triangular structure as an important motif structure effectively inhibits the spreading.

关键词： network spreading network motifs tie range edge removal strategy

Genetic lineage tracing identifies adaptive mechanisms of pancreatic islet β cells in various mouse models of diabetes with distinct age of initiation

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Science china(Life Sciences) 2024年第3期67卷 504-517页

作者： Qi Fu Yu Qian Hemin Jiang Yunqiang He Hao Dai Yang Chen Zhiqing Xia Yucheng Liang Yuncai Zhou Rui Gao Shuai Zheng hui Lv min Sun Kuanfeng Xu Tao Yang Department of Endocrinology the First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China

During the pathogenesis of type 1 diabetes(T1D) and type 2 diabetes(T2D), pancreatic islets, especially the β cells, face significant challenges. These insulin-producing cells adopt a regeneration strategy to compensate for the shortage of insulin, but the exact mechanism needs to be defined. High-fat diet(HFD) and streptozotocin(STZ) treatment are well-established models to study islet damage in T2D and T1D respectively. Therefore, we applied these two diabetic mouse models, triggered at different ages, to pursue the cell fate transition of isletβ cells. Cre-LoxP systems were used to generate islet cell type-specific(α, β, or δ) green fluorescent protein(GFP)-labeled mice for genetic lineage tracing, thereinto β-cell GFP-labeled mice were tamoxifen induced. Single-cell RNA sequencing(scRNA-seq) was used to investigate the evolutionary trajectories and molecular mechanisms of the GFP-labeled β cells in STZ-treated mice. STZ-induced diabetes caused extensive dedifferentiation of β cells and some of which transdifferentiated into α or δ cells in both youth-and adulthood-initiated mice while this phenomenon was barely observed in HFD models. β cells in HFD mice were expanded via self-replication rather than via transdifferentiation from α or δ cells, in contrast, α or δ cells were induced to transdifferentiate into β cells in STZ-treated mice(both youthand adulthood-initiated). In addition to the re-dedifferentiation of β cells, it is also highly likely that these “α or δ” cells transdifferentiated from pre-existing β cells could also re-trans-differentiate into insulin-producing β cells and be beneficial to islet recovery. The analysis of ScRNA-seq revealed that several pathways including mitochondrial function, chromatin modification, and remodeling are crucial in the dynamic transition of β cells. Our findings shed light on how islet β cells overcome the deficit of insulin and the molecular mechanism of islet recovery in T1D and T2D pathogenesis.

关键词： islet regeneration lineage tracing high fat diet(HFD) streptozotocin(STZ)

Investigation and Mitigation of Carbon Deposition over Copper Catalyst during Electrochemical CO_(2)Reduction

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Precision Chemistry 2024年第4期2卷 151-160页

作者： Jing-Wen DuanMu Zhi-Zheng Wu Fei-Yue Gao Peng-Peng Yang Zhuang-Zhuang Niu Yu-Cai Zhang Li-Ping chi min-Rui Gao Division of Nanomaterials and Chemistry Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China

Copper(Cu)is considered to be the most effective catalyst for electrochemical conversion of carbon dioxide(CO_(2))into value-added hydrocarbons,but its stability still faces considerable ***,we report the poisoning effect of carbon deposition during CO_(2)reduction on the active sites of Cu electrodea critical deactivation factor that is often *** find that,*C,an intermediate toward methane formation,could desorb on the electrode surface to form carbon *** reveal a strong correlation between the formation of methane and the carbon deposition,and the reaction conditions favoring methane production result in more carbon *** deposited carbon blocks the active sites and consequently causes rapid deterioration of the catalytic *** further demonstrate that the carbon deposition can be mitigated by increasing the roughness of the electrode and increasing the pH of the *** work offers a new guidance for designing more stable catalysts for CO_(2)reduction.

关键词： carbon deposition roughness in situ spectrum CO_(2)electroreduction copper catalyst

Predicting the Risk of Arterial Stiffness in Coal miners Based on Different Machine Learning Models

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Biomedical and Environmental Sciences 2024年第1期37卷 108-111页

作者： CHEN Qian Wei HUANG Xue Zan DING Yu ZHU Feng Ren WANG Jia ZOU Yuan Jie DU Yuan Zhen ZHANG Ya Jun hui Zi Wen ZHU Feng Lin MU min The Project was supported by Open Research Grant of Joint National-Local Engineering Research Centre for Safe and Precise Coal mining Anhui University of Science and TechnologyHefei 232001AnhuiChina School of Public Health Anhui University of Science and TechnologyHefei 232001AnhuiChina Key Laboratory of Industrial Dust Prevention and Control Occupational Safety and HealthMinistry of EducationAnhui University of Science and TechnologyHefei 232001AnhuiChina Anhui Institute of Occupational Safety and Health Anhui University of Science and TechnologyHefei 232001AnhuiChina Joint Research Center of Occupational Medicine and Health Institute of Grand HealthHefei Comprehensive National Science CenterAnhui University of Science and TechnologyHefei 232001AnhuiChina Department of Occupational&Environmental Health School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030HubeiChina Key Laboratory of Environment and Health Ministry of Education&Ministry of Environmental Protectionand State Key Laboratory of Environmental Health(Incubating)School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030HubeiChina

Coal is one of the world’s main energy resources,accounting for approximately 68%of china’s current total power ***,several studies have demonstrated that dust,exhaust fumes,and other harmful factors in coal mines increase the risk of cardiovascular disease(CVD)among miners^([1]).Arterial stiffness(AS)is an independent risk factor of CVD,and epidemiological studies have shown that AS plays a vital role in assessing the risk of CVD^([2]).

关键词： Arterial cardiovascular assessing

铑催化苯甲酰亚胺导向C—H活化合成茚[1,2-c]异喹啉-11-酮

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化学学报 2024年第6期82卷 565-569页

作者：黄佳鑫刘敏徐辉戴辉雄中国科学院上海药物研究所原创新药研究全国重点实验室上海201203 中国科学院上海有机化学研究所金属有机化学国家重点实验室上海200032 中国科学院大学北京100049

茚并[1,2-c]异喹啉是一类非常重要的有机杂环骨架,在药物化学、有机光电材料方面有着广泛的应用.本工作以苯甲酰亚胺乙酯及α-重氮-1,3-二酮为底物,通过金属铑催化,构建了茚[1,2-c]异喹啉酮骨架.进一步通过还原反应,高效合成具有生物活... 详细信息

茚并[1,2-c]异喹啉是一类非常重要的有机杂环骨架,在药物化学、有机光电材料方面有着广泛的应用.本工作以苯甲酰亚胺乙酯及α-重氮-1,3-二酮为底物,通过金属铑催化,构建了茚[1,2-c]异喹啉酮骨架.进一步通过还原反应,高效合成具有生物活性的茚并[1,2-c]异喹啉产物.该反应具有良好的底物普适性和官能团兼容性.机理试验表明该反应可能经历了五元环铑中间体,且碳氢键活化为反应的决速步.

关键词：茚并[1,2-c]异喹啉 C—H键活化铑催化