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Effects of lanthanum(Ⅲ) on nitrogen metabolism of soybean seedlings under elevated UV-B radiation

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Journal of Environmental Sciences 2007年第11期19卷 1361-1366页

作者： CAO Rui HUANG Xiao-hua zhou qing CHENG Xiao-ying The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi 214036 China College of Chemistry and Environment Science Nanjing Normal University Nanjing 210097 China

The hydroponic culture experiments of soybean bean seedlings were conducted to investigate the effect of lanthanum （La） on nitrogen metabolism under two different levels of elevated UV-B radiation （UV-B, 280-320 nm）. The whole process of nitrogen metabolism involves uptake and transport of nitrate, nitrate assimilation, ammonium assimilation, amino acid biosynthesis, and protein synthesis. Compared with the control, UV-B radiation with the intensity of low level 0.15 W/m^2 and high level 0.45 W/m^2 significantly affected the whole nitrogen metabolism in soybean seedlings （p 〈 0.05）. It restricted uptake and transport of NO3^-, inhibited activity of some key nitrogen-metabolism-related enzymes, such as： nitrate reductase （NR） to the nitrate reduction, glutamine systhetase （GS） and glutamine synthase （GOGAT） to the ammonia assimilation, while it increased the content of free amino acids and decreased that of soluble protein as well. The damage effect of high level of UV-B radiation on nitrogen metabolism was greater than that of low level. And UV-B radiation promoted the activity of the anti-adversity enzyme glutamate dehydrogenase （GDH）, which reduced the toxicity of excess ammonia in plant. After pretreatment with the optimum concentration of La （20 mg/L）, La could increase the activity of NR, GS, GOGAT, and GDH, and ammonia assimilation, but decrease nitrate and ammonia accumulation. In conclusion, La could relieve the damage effect of UV-B radiation on plant by regulating nitrogen metabolism process, and its alleviating effect under low level was better than that under the high one.

关键词： lanthanum(Ⅲ) UV-B radiation soybean seedlings nitrogen metabolism alleviating effect

Exact relations for two-photon-exchange effect in elastic ep scattering by dispersion relation and hadronic model

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Chinese Physics C 2021年第7期45卷 74-81页

作者： Hui-Yun Cao Hai-qing zhou School of Physics Southeast UniversityNanjing 211189China

The two-photon-exchange(TPE)effect plays a key role in extracting the form factors(FFs)of the *** this work,we discuss several exact properties of the TPE effect in the elastic ep *** taking four low energy interactions as examples,we analyze kinematical singularities,asymptotic behaviors,and branch cuts of TPE *** analytical expressions clearly indicate several exact relations between the dispersion relation(DR)and hadronic model(HM)*** suggests that the two methods must be modified to general forms,while novel forms yield the same *** the modification,new DRs include a non-trivial term with two ***,new DRs automatically include contributions due to the seagull interaction,meson-exchange effect,contact interactions,and off-shell *** analyze the elastic e^(±)}p scattering data sets,the new forms must be used.

关键词： dispersion relation form factor two-photon-exchange

Anticoagulant treatment for pulmonary embolism in patient with cerebral hemorrhage secondary to mechanical thrombectomy: A case report

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World Journal of Clinical Cases 2021年第33期9卷 10279-10285页

作者： Xiang-Ting Chen Qian Zhang Chang-qing zhou Yu-Fu Han qing-qing Cao Department of Neurology Bishan HospitalFirst Affiliated Hospital of Chongqing Medical UniversityChongqing 402760China

BACKGROUND Cerebral hemorrhage secondary to cerebral embolism after mechanical thrombectomy is characterized by high morbidity,disability and *** the patient also has severe pulmonary embolism(PE)at the same time,the treatment becomes more *** report describes the treatment strategy for a patient with PE and cerebral hemorrhage secondary to cerebral embolism after mechanical *** SUMMARY A 70-year-old woman presented to our emergency department with right-sided hemiplegia and mixed aphasia of 2.5 h *** was diagnosed with left cerebral embolism,left internal carotid artery occlusion,PE and left calf intramuscular vein *** mechanical thrombectomy,brain magnetic resonance imaging showed cerebral infarction with basal ganglia *** observed changes in cerebral hemorrhage on serial monitoring of brain computed tomography and adjusted the dose of anticoagulant *** 3 wk of treatment,the patient’s neurological and respiratory symptoms significantly improved,and a favorable prognosis was *** Anticoagulation could be a potential option for PE accompanied by hemorrhagic transformation of an ischemic infarct.

关键词： Pulmonary embolism Brain embolism Cerebral hemorrhage Mechanical thrombectomy Anticoagulation Case report

Analysis of point mutation in site 1896 of HBV precore and its detection in the tissues and serum of HCC patients

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World Journal of Gastroenterology 2000年第3期6卷 395-397页

作者： Yuan Wang Hu Liu qing zhou Xu Li Laboratory of Molecular Biology and Department of Biochemistry Anhui Medical UniversityHefei 230032Anhui ProvinceChina Department of Infectious Diseases the First Affiliated Hospital of Anhui Medical UniversityHefei 230032Anhui ProvinceChina

INTRODUCTION Hepatitis B is one of the common infectious diseases,which severely impairs the health of the people in our country and has close relationship

关键词： hepatitis B virus carcinoma hepatocellular precore polymerase chain reaction integration mutation liver neoplasms

Rapid determination of atrazine in environmental water samples by a novel liquid phase microextraction

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Chinese Chemical Letters 2008年第1期19卷 89-91页

作者： qing Xiang zhou Guo Hong Xie Long Pang School of Chemistry and Environmental Sciences Henan Normal University Henan Key Laboratory for Environmental Pollution Control Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control Ministry of Education Xinxiang 453007 China College of Resources and Environment Henan Institute of Science and Technology Xinxiang 453003 China

A novel method was described for the rapid determination of atrazine using dispersive liquid phase microextraction in combination with high performance liquid chromatography （HPLC）. Possible impact parameters such as sample pH, extraction and disperser solvents, salting-out effect, and extraction time were investigated. The experimental results indicated that proposed method possessed an excellent analytical performance, The linear range, detection limit, and precision （R.S.D.） were 0.1- 50 ng mL- 1 （R2 = 0.9955）, 0.601 ng mL- 1 and 6,4%, respectively. The proposed method was validated with the real water samples, and the spiked recoveries were in the range of 69.9-89.8%, respectively. These results indicated that the established method with high enrichment factor, short extraction time was an excellent alternative for the routine analysis of atrazine in environmental samples. 2007 qing Xiang zhou. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Liquid phase microextraction Atrazine High performance liquid chromatography Water samples

Synthesis of core-shell structured polymers with inserted thioether from a multi-functional scaffold

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Chinese Chemical Letters 2007年第6期18卷 758-761页

作者： Pu, Hong Ting zhou, qing Wan, De Cheng Tongji Univ Sch Mat Sci & Engn Inst Funct Polymers Shanghai 200092 Peoples R China

The synthesis of a thioether inserted, core-shell structured polymer from the scaffold of hyperbranched polyglycerol (PG) was described. PG was first allyl functionalized, and in the presence of AlBN, the allyl groups further underwent radical addition to thiol compounds, thus thiol functional polyethylene oxide monomether (MPEO) were grafted onto PG. Similarly, 2-mercaptoethylammonium chloride was introduced onto PG via thiol addition, and the residual amino groups were further quaternized with decyl bromide, leading to an amphiphilic core-shell structure polymer. (c) 2007 De Cheng Wan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： core-shell scaffold thioether radical addition hyperbranched polymer

Glycogen synthase kinase 3: a crucial regulator of axotomy-induced axon regeneration

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Neural Regeneration Research 2020年第5期15卷 859-860页

作者： Jinlian Liu qing zhou Chaoqun Liu Chunfeng Liu Saijilafu Department of Orthopedic Surgery Suzhou Kowloon HospitalShanghai Jiaotong University Medical SchoolSuzhouJiangsu ProvinceChina Orthopedic Institute Medical CollegeSoochow UniversitySuzhouJiangsu ProvinceChina Department of Orthopedic Surgery the First Affiliated HospitalSoochow UniversitySuzhouJiangsu ProvinceChina

Following nerve injury,axonal disconnection in neurons usually results in persistent functional deficits,such as ***,axons in the adult mammalian central nervous system (CNS) have very limited regenerative *** the molecular mechanism of controlling axon regeneration can provide idea for the design of effective therapeutic interventions for CNS injury,such as spinal cord *** axonal regeneration is achieved via gene expression in the neuronal soma,axonal transport of raw materials along the shaft,and membrane and cytoskeleton assembly at the nerve growth *** process is delicately regulated by spatial-temporal controlled signaling pathways that target distinct *** expression in the neuronal soma,especially of transcription factors,is often activated immediately following nerve *** signals at distal axons are interpreted and transmitted back to the soma,initiating a stream of gene expression events which positively regulate subsequent axonal *** the past few decades,extensive studies have identified many regeneration-associated genes,including CREB,nuclear factor of activated T-cells,protein 53,Sprr1a,c-Jun,Smad1,activating transcription factor 3,signal transducer and activator of transcription 3,SRF,Sox11,and Kruppel-like ***,we know far less about how the coordinated expression of these regeneration-associated genes is regulated during axonal ***,it is possible that they are regulated by a single common upstream *** so,identification of this upstream regulator will provide us with an invaluable target for the development of more effective treatments for traumatic nerve *** dorsal root ganglion (DRG) neurons represent a favorable medium in which to study the molecular mechanisms controlling intrinsic neuronal axon growth *** of the peripheral branch of a DRG neuron,known as a “conditioning lesion”,has been well-documented t

关键词： gene expression spinal cord central nervous system

Nanoscopic tribological characteristics of a cryogenically cycled Zr-based metallic glass

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 113-126页

作者： Qian Jia Qiaosheng Xia qing zhou Yucheng Wang Yue Ren Yu Meng Haifeng Wang Feng zhou State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of Surface Engineering and Remanufacturing Xi’an UniversityXi’an 710065China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Optimized macroscopic tribological behavior can be anticipated in metallic glasses(MGs)by cryogenic cycling treatment(CCT),which is attributed to enhanced ***,the intrinsic friction mechanisms of MGs induced by cryogenic rejuvenation are still poorly *** the present study,nanoscopic wear tests were conducted on the Zr-based MGs surface with different CCT cycles using atomic force microscopy(AFM).After CCT treatment with 100 cycles,the MG displays the highest adhesion and ploughing frictions,but significantly improved anti-wear *** tests and molecular dynamics simulations disclose that the increased adhesion is attributed to the dominance of liquid-like regions in the CCT-treated MGs,and the impact of reduced hardness and weak elastic recovery results in the deteriorated ploughing *** enhanced plasticity effectively dissipates the strain from the AFM tip through multiple shear bands and weakens the adhesion during deformation,giving rise to excellent wear *** study elucidates the promoting effect of CCT on the outstanding antiwear performance of MGs,and is helpful for the development of novel alloys.

关键词： metallic glasses cryogenic cycling treatment nanoscope wear friction mechanism

Diacylated anthocyanins from purple sweet potato(Ipomoea batatas L.)attenuate hyperglycemia and hyperuricemia in mice induced by a high-fructose/high-fat diet

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第7期24卷 587-601页

作者： Luhong SHEN Yang YANG Jiuliang ZHANG Lanjie FENG qing zhou College of Food Science and Technology Huazhong Agricultural UniversityWuhan 430070China Department of Pharmacy Wuhan City Central HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430014China

Studies have shown that targeting xanthine oxidase(XO)can be a feasible treatment for fructose-induced hyperuricemia and *** study aimed to evaluate the dual regulatory effects and molecular mechanisms of diacylated anthocyanins from purple sweet potato(diacylated AF-PSPs)on hyperglycemia and hyperuricemia induced by a high-fructose/high-fat *** body weight,organ index,serum biochemical indexes,and liver antioxidant indexes of mice were measured,and the kidneys were observed in pathological *** relative expression levels of messenger RNAs(mRNAs)of fructose metabolism pathway enzymes in kidney were detected by fluorescent real-time quantitative polymerase chain(qPCR)reaction technique,and the expression of renal transporter protein and inflammatory factor pathway protein was determined by immunohistochemistry(IHC)*** showed that diacylated AF-PSPs alleviated hyperuricemia in mice,and that this effect might be related to the regulation of liver XO activity,lipid accumulation,and relevant renal *** AF-PSPs reduced body weight and relieved lipid metabolism disorder,liver lipid accumulation,and liver oxidative stress,thereby enhancing insulin utilization and sensitivity,lowering blood sugar,and reducing hyperglycemia in ***,diacylated AF-PSPs restored mRNA levels related to renal fructose metabolism,and reduced kidney injury and *** study provided experimental evidence for the mechanisms of dual regulation of blood glucose and uric acid(UA)by diacylated AF-PSPs and their utilization as functional foods in the management of metabolic syndrome.

关键词： Diacylated anthocyanins from purple sweet potato(diacylated AF-PSPs) Hyperglycemia Hyperuricemia Metabolism syndrome Regulation of renal function