检索结果-南通市图书馆

Expressions of matrix metalloproteinases 1 and 3 and their tissue inhibitors in the conjunctival tissue and fibroblasts cultured from conjunctivochalasis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2017年第4期10卷 555-559页

作者： Min-Hong Xiang Xing-Ru Zhang Zhen-Yong Zhang Qing-Song Li Han-Min Wang Zhu-Mei Han huan-ming zhou Yuan-Ling Jia Xing-Xing Chen Department of Ophthalmology Putuo HospitalShanghai University of Traditional Chinese Medicine Liqun Hospital Putuo District

AIM：To investigate the expression of matrix metalloproteinases 1 and 3（MMP-1 and MMP-3） and their tissue inhibitors of metalloproteinases 1 and 3（ TIMP-1 and TIMP-3） in the conjunctiva of eyes with conjunctivochalasis（CCh）.METHODS：The conjunctival tissue was obtained from the CCh patients and controls,the MMPs/TIMPs expression concentration was determined by enzyme-linked immunosorbent assay（ELISA） and immunofluorescence *** expression levels of MMPs/TIMPs in the CCh fibroblasts were determined by analyzing its concentration in the cellular supernatant that was abstracted from the in vitro cultured CCh ***：MMP-1 and MMP-3 levels determined by ELISA were both significantly higher in the CCh group than that in the control group（P= 0.042,0.022,respectively）,so was the levels of TIMP-1（P= 0.010）.No significant difference in the expression of TIMP-3 in conjunctiva was found between the two groups（P= 0.298）.The expression of MMP-1 and MMP-3 were both up-regulated significantly in the CCh group（P= 0.040,0.001,respectively） on immunofluorescence ***-1 and MMP-3 expression in the fibroblasts were both significantly higher in the CCh group than that in the control group（P= 0.027,0.001,respectively）,while neither the TIMP-1 nor TIMP-3 expression was significantly different between the two groups（P= 0.421,0.237,respectively）.CONCLUSION：The overexpression of MMP-1 and MMP-3 in conjunctival tissue and fibroblasts may play an important role in the pathogenesis and development of CCh.

关键词： conjunctivochalasis relaxed conjunctiva fibroblast matrix metaUoproteinase tissue inhibitor of matrix metalloproteinase

Study on the hydrogen absorption properties of a YGdTbDyHo rare-earth high-entropy alloy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 127-135页

作者： Tongyue Li Ziliang Xie Wenjiao zhou huan Tong Dawen Yang Anjia Zhang Yuan Wu Xiping Song State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Whole Win(Beijing)Materials Sci.&Tech.Co. Ltd.Beijing 100083China

This study investigated the microstructure and hydrogen absorption properties of a rare-earth high-entropy alloy(HEA),*** indicated that the YGdTbDyHo alloy had a microstructure of equiaxed grains,with the alloy elements distributed *** hydrogen absorption,the phase structure of the HEA changed from a solid solution with an hexagonal-close-packed(HCP)structure to a high-entropy hydride with an faced-centered-cubic(FCC)structure without any secondary phase *** alloy demonstrated a maximum hydrogen storage capacity of 2.33 H/M(hydrogen atom/metal atom)at 723 K,with an enthalpy change(ΔH)of-141.09 kJ·mol^(-1)and an entropy change(ΔS)of-119.14 J·mol^(-1)·K^(-1).The kinetic mechanism of hydrogen absorption was hydride nucleation and growth,with an apparent activation energy(E_(a))of 20.90 kJ·mol^(-1).Without any activation,the YGdTbDyHo alloy could absorb hydrogen quickly(180 s at 923 K)with nearly no incubation period *** reason for the obtained value of 2.33 H/M was that the hydrogen atoms occupied both tetrahedral and octahedral *** results demonstrate the potential application of HEAs as a high-capacity hydrogen storage material with a large H/M ratio,which can be used in the deuterium storage field.

关键词： rare-earth high-entropy alloy hydrogen absorption capacity pressure–composition–temperature curves kinetics

Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

在线全文

学校读者我要写书评

暂无评论

Traditional Medicine Research 2025年第2期10卷 65-76页

作者： huan Pei Ren-Lin Li Xin-Ran Song Qian-Qian Wan Yu-ming Wang Han-zhou Li Wei-Quan Xu Jia-Bao Liao Wei-Bo Wen Jing Miao huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

杞精明目汤联合人工泪液对结膜松弛症临床疗效及细胞衰老的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国际眼科杂志 2020年第6期20卷 1079-1082页

作者：周欢明项敏泓麻凯文杭赵艳青刘江上海中医药大学附属普陀医院眼科中国上海市200062

目的:观察中药杞精明目汤联合人工泪液对结膜松弛症(CCH)的临床疗效及细胞衰老的影响。方法:收集40例80眼Ⅱ~Ⅳ级肝肾阴虚型CCH患者,随机分为联合治疗组(杞精明目汤联合人工泪液治疗)和人工泪液组(单纯人工泪液治疗),观察国际眼表疾病指... 详细信息

目的:观察中药杞精明目汤联合人工泪液对结膜松弛症(CCH)的临床疗效及细胞衰老的影响。方法:收集40例80眼Ⅱ~Ⅳ级肝肾阴虚型CCH患者,随机分为联合治疗组(杞精明目汤联合人工泪液治疗)和人工泪液组(单纯人工泪液治疗),观察国际眼表疾病指数(OSDI)、泪膜破裂时间(BUT)、基础泪液分泌试验(SⅠt),治疗3mo后比较临床治疗效果。对于CCH分级在Ⅲ级及以上,随访3mo及以上并有手术意愿的CCH患者切除松弛结膜组织,冰冻切片行细胞衰老相关的β-gal染色观察,结果行统计学分析。结果:治疗3mo后联合治疗组的OSDI评分(14.53±2.68分)、BUT(9.25±3.02s)、SⅠt(8.95±3.57mm/5min)均显著优于人工泪液组(P<0.05)。药物治疗后采取手术治疗的CCH患者人工泪液组为7例7眼,联合治疗组为4例4眼,且联合治疗组衰老阳性细胞计数显著低于人工泪液组(16.00±7.84个vs 39.00±14.09个,P=0.013)。结论:杞精明目汤联合人工泪液治疗CCH在缓解眼部症状、改善泪膜、促进泪液分泌方面,较单纯人工泪液治疗更为有效。联合治疗还可以减少CCH的细胞衰老,可作为除手术治疗之外安全、有效的治疗方案。

关键词：结膜松弛症杞精明目汤联合治疗细胞衰老松弛结膜

A Uqp(u1,1) Model for Vibrational Molecular Spectra

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1996年第10期13卷 721-723页

作者： zhou huan-qiang ZHANG Xin-ming CCAST(World Laboratory) P.O.Box 8730Beijing 100080 Department of Physics Chongqing UniversityChongqing 630044 Department of Physics Qujing Teachers CollegeQujingYunnan 655000

A Uqp(u1,1)model is presented for describing vibrational spectra of diatomic *** model is tested on the vibrational spectra in the X1Σg+state of H2 obtained through the Rydberg-Klein-Rees method.

关键词： method. vibrational spectra

Two paths, one goal: mechanism of calcium homeostasis to balance plant growth and immunity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年第1期 306-308页

作者： Aziz Ul Ikram Yanping Jing huan Chen Jian Chen International Genome Center Jiangsu University Joint Center for Single Cell Biology School of Agriculture and BiologyShanghai Jiao Tong University

Calcium(Ca2+) is an essential nutrient and a cellular signal in plants. The level of free Ca2+in the apoplast is ～10,000-fold higher than that in the cytoplasm at the resting state. This large Ca2+level gradient across the membrane between the interior and exterior can cause Ca2+overload and toxicity. Plants have evolved mechanisms to export Ca2+out of the cytoplasm or store it in intracellular organelles, such as endoplasmic reticulum（ER）, mitochondria, and vacuole.

关键词：

同方期刊数据库

PachPen超声角膜测厚仪与两种光学测量仪器在中央角膜厚度测量中的对比

在线全文

学校读者我要写书评

暂无评论

国际眼科杂志 2018年第4期18卷 709-712页

作者：周欢明贾元玲项敏泓李青松田文杰高翔上海中医药大学附属普陀医院眼科中国上海市200062

目的:比较不同设备在中央角膜厚度(CCT)测量方面的异同,为临床提供一种安全、有效、简便、准确的角膜厚度测量方法。方法:连续入选2016-09/12于上海中医药大学附属普陀医院眼科行术前检查的白内障患者95例95眼,分别采用手持式自动PachPe... 详细信息

目的:比较不同设备在中央角膜厚度(CCT)测量方面的异同,为临床提供一种安全、有效、简便、准确的角膜厚度测量方法。方法:连续入选2016-09/12于上海中医药大学附属普陀医院眼科行术前检查的白内障患者95例95眼,分别采用手持式自动PachPen超声角膜测厚仪、眼前节光学相干断层扫描仪(AS-OCT)及角膜内皮镜测量中央角膜厚度,并同时测量眼压。观察三种不同设备在中央角膜厚度测量方面的异同及其与眼压的相关性,并行统计学分析。结果:PachPen超声角膜测厚仪测量CCT为544.43±36.61μm,AS-OCT测量CCT为527.09±35.54μm,角膜内皮镜测量CCT为533.20±30.17μm,三组比较差异具有统计学意义(F=6.272,P=0.002),PachPen超声角膜测厚仪测出的CCT较另外两组显著增高。三者与眼压的相关系数分别为0.290、0.277和0.204(P<0.05),其中PachPen超声角膜测厚仪测出的CCT与眼压之间的相关性最高。三种测量方法测得的CCT之间均显著相关(P<0.001)。结论:PachPen超声角膜测厚仪测量出的中央角膜厚度最厚,其次是角膜内皮镜,AS-OCT测量值最小,三种设备测量中央角膜厚度有明显相关性和较好的一致性,与眼压均具有相关性。

关键词：中央角膜厚度 PachPen超声角膜测厚仪眼前节光学相干断层扫描角膜内皮镜相关性

腹腔注射硫酸镍对SD大鼠幼鼠半数致死量的研究

在线全文

学校读者我要写书评

暂无评论

国际眼科杂志 2011年第5期11卷 785-787页

作者：史才财张兴儒李青松周欢明项敏泓上海中医药大学附属普陀医院眼科中国上海市200040

目的:观察硫酸镍腹腔注射对SD大鼠幼鼠的急性毒性作用,测定半数致死量(LD50)。方法:通过估摸实验、预初实验测出SD大鼠幼鼠硫酸镍的LD100为49.00mg/kg,LD0为25.00mg/kg,再用70只SD大鼠幼鼠,随机分成5组,腹腔注射2g/L硫酸镍,每组剂量分别... 详细信息

目的:观察硫酸镍腹腔注射对SD大鼠幼鼠的急性毒性作用,测定半数致死量(LD50)。方法:通过估摸实验、预初实验测出SD大鼠幼鼠硫酸镍的LD100为49.00mg/kg,LD0为25.00mg/kg,再用70只SD大鼠幼鼠,随机分成5组,腹腔注射2g/L硫酸镍,每组剂量分别为25.00mg/kg,29.58mg/kg,35.00mg/kg,41.39mg/kg,49.00mg/kg,按1.183倍递增。用SPSS16.0软件Bliss法测定腹腔注射硫酸镍LD50。结果:各组SD大鼠幼鼠在注射不同剂量硫酸镍后出现中毒反应表现,70只幼鼠中39只死亡,死亡率为55.7%,其中11只幼鼠在48h内死亡,其余28只在接下来的5d内相继死亡。SD大鼠幼鼠腹腔注射硫酸镍LD50为33.476mg/kg,95%可信区间为33.476±1.525mg/kg。结论:SD大鼠幼鼠腹腔注射硫酸镍LD50为33.476mg/kg,具有可信性。

关键词：硫酸镍 SD大鼠幼鼠腹腔注射半数致死量

Research progress in metal-organic frameworks and their derivatives in electrochemistry

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Lingling Chen Yuxin Liu Yichun Su Wenchen Zhu Guangyu Du huan Pang School of Chemistry and Chemical Engineering Yangzhou University Department of Applied Physics The Hong Kong Polytechnic University Interdisciplinary Materials Research Center Institute for Advanced Study Chengdu University State Key Laboratory of Coordination Chemistry Nanjing University

Metal-organic frameworks (MOFs) are distinguished by their unique porosity and meticulously ordered framework structures,setting them apart from conventional complexes. These materials are defined by their highly organized crystalline and pore structures, extensive surface areas, robust porosity, and superior adsorption capabilities. Owing to their exceptional structural and functional attributes, MOFs and their derivatives are leveraged across a broad spectrum of applications, demonstrating significant potential across diverse sectors. In recent times, the scientific community has increasingly focused on MOFs, underscoring their growing importance in research. Despite the promising array of applications for MOFs and their derivatives,challenges persist in practical deployments, and the pathway to research advancement remains daunting. This document delves into the synthesis and various applications of MOFs and their derivatives, particularly in the domains of energy storage, catalysis,sensing, and water treatment. It also highlights the ongoing research progress in the field of electrochemistry, including developments in lithium ion batteries (LIBs), lithium-sulfur batteries (LSBs), zinc-ion batteries (ZIBs), aqueous nickel-zinc batteries (NZBs), and supercapacitors. Finally, it provides an outlook on the future prospects and potential hurdles facing the development of MOF materials.

关键词：