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Müller cells are activated in response to retinal outer nuclear layer degeneration in rats subjected to simulated weightlessness conditions

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Neural Regeneration Research 2025年第7期20卷 2116-2128页

作者： Yuxue Mu Ning Zhang Dongyu wei Guoqing Yang Lilingxuan Yao Xinyue Xu Yang Li Junhui Xue Zuoming Zhang Tao chen Aerospace Clinical Medical Center School of Aerospace MedicineAir Force Medical UniversityXi’anShaanxi ProvinceChina Department of Aviation Medicine Xijing HospitalAir Force Medical UniversityXi’anShaanxi ProvinceChina Department of Emergency Medicine Wuhan No.1 HospitalWuhanHubei ProvinceChina Third Regiment School of Basic MedicineAir Force Medical UniversityXi’anShaanxi ProvinceChina Fourth Regiment School of Basic MedicineAir Force Medical UniversityXi’anShaanxi ProvinceChina

A microgravity environment has been shown to cause ocular damage and affect visual acuity,but the underlying mechanisms remain ***,we established an animal model of weightlessness via tail suspension to examine the pathological changes and molecular mechanisms of retinal damage under *** 4 weeks of tail suspension,there were no notable alterations in retinal function and morphology,while after 8 weeks of tail suspension,significant reductions in retinal function were observed,and the outer nuclear layer was thinner,with abundant apoptotic *** investigate the mechanism underlying the degenerative changes that occurred in the outer nuclear layer of the retina,proteomics was used to analyze differentially expressed proteins in rat retinas after 8 weeks of tail *** results showed that the expression levels of fibroblast growth factor 2(also known as basic fibroblast growth factor)and glial fibrillary acidic protein,which are closely related to Müller cell activation,were significantly *** addition,Müller cell regeneration and Müller cell gliosis were observed after 4 and 8 weeks,respectively,of simulated *** findings indicate that Müller cells play an important regulatory role in retinal outer nuclear layer degeneration during weightlessness.

关键词： glial fibrous acidic protein gliosis Müller cells nerve growth factor neural differentiation neurodegeneration proteomic retinal degeneration retinal outer nuclear layer simulated weightlessness

MET receptor tyrosine kinase promotes the generation of functional synapses in adult cortical circuits

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Neural Regeneration Research 2025年第5期20卷 1431-1444页

作者： Yuehua Cui Xiaokuang Ma Jing wei Chang chen Neha Shakir Hitesch Guirram Zhiyu Dai Trent Anderson Deveroux Ferguson Shenfeng Qiu Basic Medical Sciences University of Arizona College of Medicine-PhoenixPhoenixAZUSA Department of Medicine University of Arizona College of Medicine-PhoenixPhoenixAZUSA

Loss of synapse and functional connectivity in brain circuits is associated with aging and neurodegeneration,however,few molecular mechanisms are known to intrinsically promote synaptogenesis or enhance synapse *** have previously shown that MET receptor tyrosine kinase in the developing cortical circuits promotes dendritic growth and dendritic spine *** investigate whether enhancing MET in adult cortex has synapse regenerating potential,we created a knockin mouse line,in which the human MET gene expression and signaling can be turned on in adult(10–12 months)cortical neurons through doxycycline-containing *** found that similar to the developing brain,turning on MET signaling in the adult cortex activates small GTPases and increases spine density in prefrontal projection *** findings are further corroborated by increased synaptic activity and transient generation of immature silent *** MET signaling resulted in an increasedα-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid/N-methyl-Daspartate(AMPA/NMDA)receptor current ratio,indicative of enhanced synaptic function and *** data reveal that enhancing MET signaling could be an interventional approach to promote synaptogenesis and preserve functional connectivity in the adult *** findings may have implications for regenerative therapy in aging and neurodegeneration conditions.

关键词： aging circuit connectivity cortical circuits molecular mechanisms neural regeneration neurodegeneration synapses

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单侧声带麻痹的电声门图测试

听力学及言语疾病杂志 1998年第3期6卷 119-121页

作者：魏春生王薇陈锋上海眼耳鼻喉科医院耳鼻咽喉科 200031 上海眼耳鼻喉科医院嗓音测试中心

为探讨单侧声带麻痹患者的声带振动规律,文中对46例患者作了电声门图(electroglottograph,EGG)测试,将参数接触率(contact quotient,CQ)、接触率微扰(contact quotient perturbation,CQP).接触幂(contact index,CI)和接触幂微扰(contact index perturbation,CIP)与声带固定的位置相结合进行统计学分析,结果为多数单侧声带麻痹患者EGG参数异常,包括CQ减少,Cl、CQP及CIP增大.其中,声带固定在正中位组EGG各参数正常率高于旁正中位组,CQ异常率旁正中位组高于正中位组,中间位组EGG各参数均异常,声带固定的位置不同,CI及CQP、CIP无显著性差异.因EGG能描记每一振动周期特点,对研究缺乏规律性的声带振动,有一定的应用前景.

关键词：声带麻痹电声门图声带振动

Application of Dorzagliatin in peritoneal dialysis patients with type 2 diabetes mellitus:A case report

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World Journal of Diabetes 2025年第1期16卷 204-210页

作者： Fang chen Bo An Wen-cheng An Gang Fu wei Huang Hui-Xian Yan Department of Endocrinology Beijing Haidian HospitalBeijing 100080China Department of Nephrology Beijing Haidian HospitalBeijing Haidian Section of Peking University Third HospitalBeijing 100080China

BACKGROUND Treating diabetes in dialysis patients remains a challenge,with many hypoglycemic drugs requiring dose adjustments or avoidance in these *** SUMMARY This report describes an 83-year-old female patient with a 30-year history of type 2 diabetes(T2DM)who had struggled to control her blood sugar for more than a *** had a history of high blood pressure for 30 years,had undergone continuous ambulatory peritoneal dialysis for more than two years,was 163 cm tall,weighed 77 kg,and had a body mass index of 28.98 kg/*** intensive insulin therapy at a daily dose of 150 units,adding Dorzagliatin at a dosage of 75 mg orally twice daily led to immediate blood sugar improvement and a gradual reduction in insulin *** one month of follow-up,the fasting plasma glucose was 6-8 mmol/L,and the 2-hour postprandial glucose was 8-12 mmol/*** To our knowledge,this report is the first to use Dorzagliatin to treat type 2 diabetes peritoneal dialysis patients with challenging glucose ***,a novel glucokinase activator primarily metabolized by the liver,exhibits no pharmacokinetic differences among patients with varying degrees of chronic kidney *** has a high plasma protein binding rate and may not be cleared by peritoneal dialysis,potentially offering a new glycemic control option for Type 2 diabetic patients on peritoneal dialysis.

关键词： Dorzagliatin Type 2 diabetes mellitus Peritoneal dialysis Glucokinase activator Glucose control Case report

Prognostic model for esophagogastric variceal rebleeding after endoscopic treatment in liver cirrhosis: A Chinese multicenter study

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World Journal of Gastroenterology 2025年第2期31卷 85-101页

作者： Jun-Yi Zhan Jie chen Jin-Zhong Yu Fei-Peng Xu Fei-Fei Xing De-Xin Wang Ming-Yan Yang feng Xing Jian Wang Yong-Ping Mu Cell Biology Laboratory Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Liver Diseases Shanghai Academy of Chinese MedicineShanghai 201203China Clinical Key Laboratory of Traditional Chinese Medicine of Shanghai Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Key Laboratory of Liver and Kidney Disease of the Ministry of Education Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Gastroenterology and Hepatology Zhongshan Hospital Affiliated to Fudan UniversityShanghai 200032China Shanghai Institute of Liver Disease Fudan UniversityShanghai 200032China Evidence-Based Medicine Center Fudan UniversityShanghai 200032China Department of Gastrointestinal Endoscopy Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Hepatology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China

BACKGROUND Rebleeding after recovery from esophagogastric variceal bleeding(EGVB)is a severe complication that is associated with high rates of both incidence and *** its clinical importance,recognized prognostic models that can effectively predict esophagogastric variceal rebleeding in patients with liver cirrhosis are *** To construct and externally validate a reliable prognostic model for predicting the occurrence of esophagogastric variceal *** This study included 477 EGVB patients across 2 cohorts:The derivation cohort(n=322)and the validation cohort(n=155).The primary outcome was rebleeding events within 1 *** least absolute shrinkage and selection operator was applied for predictor selection,and multivariate Cox regression analysis was used to construct the prognostic *** validation was performed with bootstrap *** assessed the discrimination,calibration and accuracy of the model,and performed patient risk *** Six predictors,including albumin and aspartate aminotransferase concentrations,white blood cell count,and the presence of ascites,portal vein thrombosis,and bleeding signs,were selected for the rebleeding event prediction following endoscopic treatment(REPET)*** predicting rebleeding within 1 year,the REPET model ex-hibited a concordance index of 0.775 and a Brier score of 0.143 in the derivation cohort,alongside 0.862 and 0.127 in the validation ***,the REPET model revealed a significant difference in rebleeding rates(P<0.01)between low-risk patients and intermediate-to high-risk patients in both *** We constructed and validated a new prognostic model for variceal rebleeding with excellent predictive per-formance,which will improve the clinical management of rebleeding in EGVB patients.

关键词： Esophagogastric variceal bleeding Variceal rebleeding Liver cirrhosis Prognostic model Risk stratification Secondary prophylaxis

Depression mechanism of sulfite ions on sphalerite and Pb2+ activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第02期 335-345页

作者： feng Zhang chenyang Zhang Linlin Wu wei Sun Hongliang Zhang Jianhua chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Join Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South University State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&Metallurgy Hunan Provincial Key Laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South University School of Resources Environment and MaterialsGuangxi University Department of Chemistry Xiangtan University China Railway Resource Group Co.Ltd

The depression mechanism of sulfite ions on sphalerite and Pb2+activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb2+activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory（DFT） *** X-ray photoelectric spectroscopy （XPS） results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO3in *** hydrophilic PbSO3was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb2+activated sphalerite.

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基于输油管最优化布置的数学模型

苏州市职业大学学报 2011年第3期22卷 60-65页

作者：陆卫丰陈卫忠苏州市职业大学基础部江苏苏州215104

针对两炼油厂到铁路线距离和两炼油厂间距离的各种不同情形,提出管线铺设费用最省的设计方案,将其转化为求管线铺设最短的设计方案.根据共用管线与非共用管线的接点的不同位置得出3种不同的设计方案,分别对3种设计方案进行优化,并得出... 详细信息

针对两炼油厂到铁路线距离和两炼油厂间距离的各种不同情形,提出管线铺设费用最省的设计方案,将其转化为求管线铺设最短的设计方案.根据共用管线与非共用管线的接点的不同位置得出3种不同的设计方案,分别对3种设计方案进行优化,并得出相应的最优解.针对两炼油厂A、B的不同位置,比较3种方案的最优解.

关键词：优化模型管线铺设设计方案

N-3,4,6,7-四氢-2H-取代嘧啶并[1,6-c]喹唑啉-2-烯胺类衍生物的合成及其体外抗肿瘤活性研究

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现代药物与临床 2017年第7期32卷 1171-1176页

作者：李唯周峰陈婉清周有骏福建省医学科学研究院福建省医学测试重点实验室福建福州350001 第二军医大学药学院药物化学教研室上海200433 上海医药工业研究院创新药物与制药工艺国家重点实验室上海200040

目的合成N-3,4,6,7-四氢-2H-取代嘧啶并[1,6-c]喹唑啉-2-烯胺类衍生物,并对其进行体外抗肿瘤活性研究。方法以4,6-二氯嘧啶和6-氨基-1,4-苯并二氧杂环为起始原料,经过氨化、Suzuki偶联、缩合反应和环合反应合成一系列N-3,4,6,7-四氢-2H... 详细信息

目的合成N-3,4,6,7-四氢-2H-取代嘧啶并[1,6-c]喹唑啉-2-烯胺类衍生物,并对其进行体外抗肿瘤活性研究。方法以4,6-二氯嘧啶和6-氨基-1,4-苯并二氧杂环为起始原料,经过氨化、Suzuki偶联、缩合反应和环合反应合成一系列N-3,4,6,7-四氢-2H-取代嘧啶并[1,6-c]喹唑啉-2-烯胺类化合物,并采用MTT法对其体外肿瘤活性进行研究。结果设计并合成了18个目标化合物,结构经~1H-NMR和MS确证。活性测试结果显示多个目标化合物抗肿瘤活性与阳性对照药索拉非尼相近。结论发现了一类全新结构的骨架分子,目标化合物具有较强的抗肿瘤活性,为新型抗肿瘤化合物的设计与合成提供思路。

关键词： 4,6-二氯嘧啶 6-氨基-1,4-苯并二氧杂环杂环抗肿瘤活性

Differential distribution of PINK1 and Parkin in the primate brain implies distinct roles

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Neural Regeneration Research 2025年第4期20卷 1124-1134页

作者： Yanting Liu wei Huang Jiayi Wen Xin Xiong Ting Xu Qi Wang Xiusheng chen Xianxian Zhao Shihua Li Xiaojiang Li weili Yang Guangdong Key Laboratory of Non-human Primate Research Key Laboratory of CNS Regeneration(Ministry of Education)Guangdong-Hongkong-Macao CNS Regeneration Institute of Jinan UniversityJinan UniversityGuangzhouGuangdong ProvinceChina

The vast majority of in vitro studies have demonstrated that PINK1 phosphorylates Parkin to work together in mitophagy to protect against neuronal ***,it remains largely unclear how PINK1 and Parkin are expressed in mammalian *** has been difficult to address because of the intrinsically low levels of PINK1 and undetectable levels of phosphorylated Parkin in small *** this issue is critical for elucidating the in vivo roles of PINK1 and ***,we showed that the PINK1 kinase is selectively expressed as a truncated form(PINK1–55)in the primate *** the present study,we used multiple antibodies,including our recently developed monoclonal anti-PINK1,to validate the selective expression of PINK1 in the primate *** found that PINK1 was stably expressed in the monkey brain at postnatal and adulthood stages,which is consistent with the findings that depleting PINK1 can cause neuronal loss in developing and adult monkey ***1 was enriched in the membrane-bound fractionations,whereas Parkin was soluble with a distinguishable *** double staining experiments showed that PINK1 and Parkin did not colocalize under physiological conditions in cultured monkey astrocytes,though they did colocalize on mitochondria when the cells were exposed to mitochondrial *** findings suggest that PINK1 and Parkin may have distinct roles beyond their well-known function in mitophagy during mitochondrial damage.

关键词： neurodegeneration Parkin Parkinson’s disease PINK1 subcellular distribution