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Understand the Temperature Sensing Behavior of Solid-state Polymerized PEDOT Hybrid Based on X-ray Scattering Studies

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Chinese Journal of Polymer Science 2024年第1期42卷 105-112,I0010页

作者： Zhen-Hang He Guang-Feng Liu Ze-Kun Zhou Zhen Liu yi-shu Zeng Peng Zhang School of Materials Science and Engineering Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSun Yat-sen UniversityGuangzhou 510275China Shanghai Advanced Research Institute(Zhangjiang Laboratory) Chinese Academy of SciencesShanghai 201204China

Poly(3,4-ethylenedioxythiophene)(PEDOT) is one of the most successful conductive polymers that recently has been used in wearable sensors for human health monitoring. In this work, we prepared a series of PEDOT hybrids consisting of PEDOT, sodium poly(styrene sulfonate)(PSSNa) and polyethylene oxide(PEO), and their preparation could be scaled-up via an adapted solid-state polymerization process. The resistance of the as-prepared PEDOT:PSS/PEO hybrid shows clear temperature response, i.e., it decreases almost linearly with the temperature increase. To understand this phenomenon, the in situ synchrotron radiation wide-and small-angle X-ray scattering(WAXS/SAXS) characterizations were undertaken to study the temperature-dependent microstructure change of the PEDOT:PSS/PEO hybrid. It demonstrated that PEDOT formed conductive paths in the hybrids, which were not destroyed by the PEO crystallization. As temperature increased, the PEO crystals' melting and the accompanying reorganization of PEDOT chains endowed the hybrid sample temperature responsiveness. Based on these fundamental knowledges, the hybrid materials were used to fabricate flexible wearable sensor that showing temperature sensing performance with an accuracy of 1 ℃. These findings shed lights on the scalable manufacturing of wearable sensors for body temperature monitoring.

关键词： Solid-state polymerization PEDOT hybrid Structure-property correlation X-ray scattering

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Simulation Study on Constraining Gravitational Wave Propagation Speed by Gravitational Wave and Gamma-ray Burst Joint Observation on Binary Neutron Star Mergers

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Research in Astronomy and Astrophysics 2024年第8期24卷 42-51页

作者： Jin-Hui Rao shu-Xu yi Lian Tao Qing-Wen Tang Department of Physics School of Physics and Materials ScienceNanchang UniversityNanchang 330031China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

Theories of modified gravity suggest that the propagation speed of gravitational waves(GW)v_gmay deviate from the speed of light c.A constraint can be placed on the difference between c and v_gwith a simple method that uses the arrival time delay between GW and electromagnetic wave simultaneously emitted from a burst *** simulated the joint observation of GW and short gamma-ray burst signals from binary neutron star merger events in different observation campaigns,involving advanced LIGO(aLIGO)in design sensitivity and Einstein Telescope(ET)joint-detected with Fermi/*** a result,the relative precision of constraint on v_gcan reach~10~(-17)(aLIGO)and~10^(-18)(ET),which are one and two orders of magnitude better than that from GW170817,*** continue to obtain the bound of graviton mass m_g≤7.1(3.2)×10~(-20)eV with aLIGO(ET).Applying the Standard-Model Extension test framework,the constraint on v_gallows us to study the Lorentz violation in the nondispersive,nonbirefringent limit of the gravitational *** obtain the constraints of the dimensionless isotropic coefficients S_(00)^(4)at mass dimension d=4,which are-1×10^(-15)

关键词： gravitational waves-(stars)gamma-ray burst general-stars neutron

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Multi-omics integration reveals potential stage-specific druggable targets in T-cell acute lymphoblastic leukemia

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Genes & Diseases 2024年第5期11卷 374-389页

作者： Zijun Yan Jie Xia Ziyang Cao Hongyang Zhang Jinxia Wang Tienan Feng yi shu Lin Zou Clinical Research Unit Shanghai Children’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200062China Institute of Pediatric Infection Immunityand Critical Care MedicineShanghai Jiao Tong University School of MedicineShanghai 200062China Center for Clinical Molecular Laboratory Medicine of Children’s Hospital of Chongqing Medical University Chongqing 400014China Clinical Research Institute Shanghai Jiao Tong University School of MedicineShanghai 200025China Bioinformatics and BioMedical Bigdata Mining Laboratory School of Big HealthGuizhou Medical UniversityGuiyangGuizhou 554300China

T-cell acute lymphoblastic leukemia(T-ALL),a heterogeneous hematological malignancy,is caused by the developmental arrest of normal T-cell *** development of targeted therapeutic regimens is impeded by poor knowledge of the stage-specific aberrances in this *** this study,we performed multi-omics integration analysis,which included mRNA expression,chromatin accessibility,and gene-dependency database analyses,to identify potential stage-specific druggable targets and repositioned drugs for this *** multi-omics integration helped identify 29 potential pathological genes for *** genes exhibited tissue-specific expression profiles and were enriched in the cell cycle,hematopoietic stem cell differentiation,and the AMPK signaling *** these,four known druggable targets(CDK6,TUBA1A,TUBB,and TYMS)showed dysregulated and stage-specific expression in malignant T cells and may serve as stage-specific targets in *** TUBA1A expression level was higher in the early T cell precursor(ETP)-ALL cells,while TUBB and TYMS were mainly highly expressed in malignant T cells arrested at the CD4 and CD8 double-positive or single-positive ***6 exhibited a U-shaped expression pattern in malignant T cells along the naıve to maturation ***,mebendazole and gemcitabine,which target TUBA1A and TYMS,respectively,exerted stage-specific inhibitory effects on T-ALL cell lines,indicating their potential stage-specific antileukemic role in ***,our findings might aid in identifying potential stage-specific druggable targets and are promising for achieving more precise therapeutic strategies for T-ALL.

关键词： Multi-omics Stage-specific druggable targets Targeted therapeutic strategies T-cell acute lymphoblastic leukemia Drug repositioning

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Enterococcus faecalis provides protection during scavenging in carrion crow (Corvus corone)

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Zoological Research 2024年第3期45卷 451-463页

作者： Bin Hu Jia-Min Wang Qing-Xun Zhang Jing Xu Ya-Nan Xing Bo Wang shu-yi Han Hong-Xuan He CAS Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing Milu Ecological Research Center Beijing 102600China Beijing Capital International Airport Co. Ltd.Beijing 101300China

The gut microbiota significantly influences host physiology and provides essential ecosystem *** diet can affect the composition of the gut microbiota,the gut microbiota can also help the host adapt to specific dietary *** carrion crow(Corvus corone),an urban facultative scavenger bird,hosts an abundance of pathogens due to its scavenging *** this,carrion crows infrequently exhibit illness,a phenomenon related to their unique physiological *** present,however,the role of the gut microbiota remains incompletely *** this study,we performed a comparative analysis using 16S rRNA amplicon sequencing technology to assess colonic content in carrion crows and 16 other bird species with different diets in Beijing,*** findings revealed that the dominant gut microbiota in carrion crows was primarily composed of Proteobacteria(75.51%)and Firmicutes(22.37%).Significant differences were observed in the relative abundance of Enterococcus faecalis among groups,highlighting its potential as a biomarker of facultative scavenging behavior in carrion ***,*** isolated from carrion crows was transplanted into model mice to explore the protective effects of this bacterial community against Salmonella enterica *** showed that *** down-regulated the expression of pro-inflammatory cytokines tumor necrosis factor alpha(TNF-α),interferon gamma(IFN-γ),and interleukin 6(IL-6),prevented *** colonization,and regulated the composition of gut microbiota in mice,thereby modulating the host’s immune regulatory ***,*** exerts immunoregulatory and anti-pathogenic functions in carrion crows engaged in scavenging behavior,offering a representative case of how the gut microbiota contributes to the protection of hosts with specialized diets.

关键词： Carrion crow Facultative scavenger Gut microbiota Enterococcus faecalis 16S rRNA sequencing

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Rare uterine serosal pregnancy after in vitro fertilization in a woman with bilateral salpingectomy

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Clinical Research Communications 2024年第3期7卷 38-42页

作者： shu-yi Dong shu-Feng Liu Jun Tan Ping-Ping Sun The Reproductive Endocrinology Department of Gaomi Maternity and Child Care Hospital Weifang 261000China. The Reproductive Medicine Centre of Weifang People’s Hospital Weifang 261000China.

Objective:To improve the understanding of ectopic pregnancy after bilateral salpingectomy through case analysis and literature ***:A case of uterine serosal pregnancy after in vitro fertilization and embryo transfer(IVF-ET)in a woman with bilateral salpingectomy was reported in detail and summarized,and relevant literatures searched in Pubmed were ***:The patient had a sudden abdominal pain 18 days after *** showed no pregnancy sac in the intrauterine cavity and bilateral adnexal areas,but there was a large amount of fluid in the Pouch of Douglas,which was an indication for surgical *** the operation,the pregnancy tissue was found on the uterine serosal and cleared in *** the patient recovered well after *** of the literatures showed that most of ectopic pregnancies after bilateral salpingectomy were treated surgically and had a good ***:Ectopic pregnancy after bilateral salpingectomy is extremely rare and should be early judged by the patients’*** treatment timely can achieve good outcome.

关键词： IVF-ET uterine serosal pregnancy ectopic pregnancy bilateral salpingectomy

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Hepatoprotective effects of Xiaoyao San formula on hepatic steatosis and inflammation via regulating the sex hormones metabolism

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World Journal of Hepatology 2024年第7期16卷 1051-1066页

作者： Xiao-Li Mei shu-yi Wu Si-Lan Wu Xiao-Lin Luo Si-Xing Huang Rui Liu Zhe Qiang Department of Pharmacology and Toxicology Sichuan-Chongqing Joint Key Laboratory of New Chinese Medicine Creation LaboratoryChongqing Academy of Chinese Materia MedicaChongqing 400061China College of Chinese Medicine Chongqing College of Traditional Chinses MedicineChongqing 402760China Department of Oncology The Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China College of Pharmacy Chongqing Medical UniversityChongqing 400010China

BACKGROUND The modified Xiaoyao San(MXS)formula is an adjuvant drug recommended by the National Health Commission of China for the treatment of liver cancer,which has the effect of preventing postoperative recurrence and metastasis of hepatocellular carcinoma and prolonging patient ***,the molecular mechanisms underlying that remain *** To investigate the role and mechanisms of MXS in ameliorating hepatic injury,steatosis and *** A choline-deficient/high-fat diet-induced rat nonalcoholic steatohepatitis(NASH)model was used to examine the effects of MXS on lipid accumulation in primary *** tissues were collected for western blotting and immunohisto chemistry(IHC)*** accumulation and hepatic fibrosis were detected using oil red staining and Sirius red *** serum samples were collected for biochemical assays and NMR-based metabonomics *** inflammation/lipid metabolism-related signaling and regulators in liver tissues were also detected to reveal the molecular mechanisms of MXS against *** MXS showed a significant decrease in lipid accumulation and inflammatory response in hepatocytes under metabolic *** western blotting and IHC results indicated that MXS activated AMPK pathway but inhibited the expression of key regulators related to lipid accumulation,inflammation and hepatic fibrosis in the pathogenesis of *** metabonomics analysis systemically indicated that the arachidonic acid metabolism and steroid hormone synthesis are the two main target metabolic pathways for MXS to ameliorate liver inflammation and hepatic ***,we found that MXS protected against NASH by attenuating the sex hormone-related metabolism,especially the metabolism of male *** MXS ameliorates inflammation and hepatic steatosis of NASH by inhibiting the metabolism of male *** male hormone related metabolic pathways may be the potential therapeutic app

关键词： Hepatic steatosis Inflammation Sex hormone metabolism Male hormone Phosphatase and tensin homolog deleted on chromosome ten

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Chronic sleep deprivation induces alterations in DNA and RNA modifications by liquid chromatography-mass spectrometry analysis

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Chinese Chemical Letters 2024年第8期35卷 413-417页

作者： Tian Feng Yun-Ling Gao Di Hu Ke-Yu Yuan shu-yi Gu Yao-Hua Gu Si-Yu Yu Jun Xiong Yu-Qi Feng Jie Wang Bi-Feng Yuan School of Public Health Research Center of Public HealthRenmin Hospital of Wuhan UniversityWuhan UniversityWuhan 430071China Department of Radiation and Medical Oncology Zhongnan Hospital of Wuhan UniversityWuhan UniversityWuhan 430071China Key Laboratory of Magnetic Resonance in Biological Systems State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsNational Center for Magnetic Resonance in WuhanWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of Sciences-Wuhan National Laboratory for OptoelectronicsWuhan 430071China University of Chinese Academy of Sciences Beijing 101408China Institute of Neuroscience and Brain Diseases Xiangyang Central HospitalAffiliated Hospital of Hubei University of Arts and ScienceXiangyang 441000China Phase I Clinical Trial Laboratory Zhongnan Hospital of Wuhan UniversityWuhan 430071China

Sleep deprivation(SD)is a widespread issue that disrupts the lives of millions of *** effects ini-tiate as changes within neurons,specifically at the DNA and RNA level,leading to disruptions in neuronal plasticity and the dysregulation of various cognitive functions,such as learning and *** acid epigenetic modifications that could regulate gene expression have been reported to play crucial roles in this ***,there is a lack of comprehensive research on the correlation of SD with nucleic acid epigenetic *** the current study,we aimed to systematically investigate the landscape of modifications in DNA as well as in small RNA molecules across multiple tissues,including the heart,liver,kidney,lung,hippocampus,and spleen,in response to chronic sleep deprivation(CSD).Using liquid chromatography-tandem mass spectrometry(LC-MS/MS)analysis,we characterized the dynamic changes in DNA and RNA modification profiles in different tissues of mice under CSD ***,we ob-served a significant decrease in the level of 5-methylcytosine(5mC)and a significant increase in the level of 5-hydroxymethylcytosine(5hmC)in the kidney in CSD *** RNA modifications,we observed an overall increased trend for most of these significantly changed modifications across six tis-sues in CSD *** study sheds light on the significance of DNA and RNA modifications as crucial epigenetic markers in the context of CSD-induced stress.

关键词： Sleep deprivation Epigenetics Mass spectrometry DNA modification RNA modification Small RNA

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历史与人民的选择:过程视角的中华民族共同体

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贵州民族研究 2024年第3期45卷 23-29页

作者：崔舒怡中国人民大学马克思主义学院北京100872

从过程的角度而言,中华民族共同体具有一个形成、发展的进程,包括发展进程中经历的曲折。进程的轨迹构成了历史,历史诠释了中华民族是一个命运共同体。推动中华民族历史进程的是不断实现自身发展的中华文明,中华民族发展进程与中华文明... 详细信息

从过程的角度而言,中华民族共同体具有一个形成、发展的进程,包括发展进程中经历的曲折。进程的轨迹构成了历史,历史诠释了中华民族是一个命运共同体。推动中华民族历史进程的是不断实现自身发展的中华文明,中华民族发展进程与中华文明发展进程彼此助推,形成中华民族史和中华文明史。树立正确的中华民族历史观,就是在尊重中华民族共同体形成与发展的事实基础上,以其内在发展的动力与规律为遵循,推动中华民族共同体的进步与发展。

关键词：命运共同体中华文明正确的中华民族历史观

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基于近红外光谱与高斯过程的高粱单宁含量快速检测

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分析化学 2024年第7期52卷 1028-1038页

作者：赵瑾熠陈争光衣淑娟黑龙江八一农垦大学信息与电气工程学院黑龙江八一农垦大学工程学院

高粱是我国主要的酿酒原料之一，也是重要的饲料原料。在酿酒过程中，高粱籽粒中的单宁含量对酒品品质具有决定性作用；作为饲料原料时，高粱的单宁含量对饲料的利用率有重要影响，因此高粱中的单宁含量对其品质和用途具有重要影响。传... 详细信息

高粱是我国主要的酿酒原料之一，也是重要的饲料原料。在酿酒过程中，高粱籽粒中的单宁含量对酒品品质具有决定性作用；作为饲料原料时，高粱的单宁含量对饲料的利用率有重要影响，因此高粱中的单宁含量对其品质和用途具有重要影响。传统方法检测高粱中单宁含量时存在耗时长和成本高等问题，本研究利用近红外光谱结合化学计量学方法实现了高粱单宁含量的快速无损检测。在对光谱进行预处理的基础上，使用蒙特卡洛交叉验证法（MCCV）结合高斯过程回归（GPR）进行异常样本剔除；然后，将样本集随机划分为建模集和预测集，使用无信息变量消除法（UVE）进行特征波长选择；最后，建立GPR模型，并与偏最小二乘回归（PLSR）模型和支持向量机回归（SVR）模型进行性能对比。结果表明，GPR模型的性能全面优于PLSR和SVR模型，经去趋势组合Savitzky-Golay卷积平滑进行预处理，剔除异常样本并进行特征波长选择后，建立的GPR模型为最优模型，其建模集决定系数（RC2）、预测集决定系数（RP2）和相对分析误差（RPD）分别为0.9979、0.9529和4.8453。本研究结果表明，采用近红外光谱结合化学计量学方法建立的GPR模型可用于高粱单宁含量的快速无损检测。

关键词：近红外光谱化学计量学高粱单宁高斯过程法快速无损检测

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二十碳五烯酸和二十二碳六烯酸及其组合对斑马鱼阿尔茨海默病模型认知障碍的改善作用和机制

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中国药理学通报 2024年第4期40卷 701-709页

作者：黄城益邓淑怡宋采广东海洋大学食品科技学院广东湛江524088 广东海洋大学深圳研究院广东深圳518117

目的omega-3多不饱和脂肪酸二十碳五烯酸(eicosapentaenoic acid,EPA)和二十二碳六烯酸(docosahexaenoic acid,DHA)能够抑制M1型小胶质细胞的过度激活促炎细胞因子的释放和细胞凋亡,而EPA具有抗抑郁的作用。与EPA比较,DHA似对记忆的改... 详细信息

目的omega-3多不饱和脂肪酸二十碳五烯酸(eicosapentaenoic acid,EPA)和二十二碳六烯酸(docosahexaenoic acid,DHA)能够抑制M1型小胶质细胞的过度激活促炎细胞因子的释放和细胞凋亡,而EPA具有抗抑郁的作用。与EPA比较,DHA似对记忆的改善作用更强。由于两者在食物、衰老和疾病中的比值多变,其单一和最佳组合的功效不明,本实验拟利用AD模型比较研究EPA、DHA及最佳组合改善认知障碍及神经炎症的机制。方法Al 3+诱导斑马鱼AD模型,饲予EPA、DHA或EPA+DHA(1∶2),评估新物体识别和T迷宫奖赏的记忆,GC-MS检测躯体PUFAs浓度变化,qPCR检测脑内AChE、Axl、APP、Bace1、IL-6、TNF-α、CD11b、CD206、VDAC1、Caspase-3、Caspase-9和Bax的变化,ELISA试剂盒检测脑内Aβ的浓度。结果与模型组相比,EPA仅明显改善了斑马鱼的新物体识别能力,而DHA与EPA+DHA均恢复了新物体识别和T迷宫中的记忆。给予EPA、DHA和EPA+DHA均明显抑制了Aβ的蛋白浓度变化以及IL-6、CD206、Caspase-3、Caspase-9、Bax和AChE的mRNA表达,EPA和DHA均明显抑制了Bace1、APP和TNF-α的mRNA表达。DHA和EPA+DHA还明显降低了Axl和VDAC1的mRNA表达。结论EPA+DHA的组合对Al 3+诱导斑马鱼AD模型的记忆和认知障碍具有更好的改善作用,其作用机制可能通过抑制脑内细胞凋亡情况来改善记忆和认知障碍。

关键词： EPA DHA 阿尔茨海默病斑马鱼认知记忆神经炎症

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