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Tanshinone ⅡA improves Alzheimer’s disease via RNA nuclearenriched abundant transcript 1/microRNA-291a-3p/member RAS oncogene family Rab22a axis 被引量:1
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作者 Long-Xiu Yang Man Luo Sheng-Yu Li 《World Journal of Psychiatry》 SCIE 2024年第4期563-581,共19页
BACKGROUND Alzheimer’s disease(AD)is a neurodegenerative condition characterized by oxidative stress and neuroinflammation.Tanshinone ⅡA(Tan-ⅡA),a bioactive compound isolated from Salvia miltiorrhiza plants,has sho... BACKGROUND Alzheimer’s disease(AD)is a neurodegenerative condition characterized by oxidative stress and neuroinflammation.Tanshinone ⅡA(Tan-ⅡA),a bioactive compound isolated from Salvia miltiorrhiza plants,has shown potential neuroprotective effects;however,the mechanisms underlying such a function remain unclear.AIM To investigate potential Tan-ⅡA neuroprotective effects in AD and to elucidate their underlying mechanisms.METHODS Hematoxylin and eosin staining was utilized to analyze structural brain tissue morphology.To assess changes in oxidative stress and neuroinflammation,we performed enzyme-linked immunosorbent assay and western blotting.Additionally,the effect of Tan-ⅡA on AD cell models was evaluated in vitro using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay.Genetic changes related to the long non-coding RNA(lncRNA)nuclear-enriched abundant transcript 1(NEAT1)/microRNA(miRNA,miR)-291a-3p/member RAS oncogene family Rab22a axis were assessed through reverse transcription quantitative polymerase chain reaction.RESULTS In vivo,Tan-ⅡA treatment improved neuronal morphology and attenuated oxidative stress and neuroinflammation in the brain tissue of AD mice.In vitro experiments showed that Tan-ⅡA dose-dependently ameliorated the amyloid-beta 1-42-induced reduction of neural stem cell viability,apoptosis,oxidative stress,and neuroinflammation.In this process,the lncRNA NEAT1-a potential therapeutic target-is highly expressed in AD mice and downregulated via Tan-ⅡA treatment.Mechanistically,NEAT1 promotes the transcription and translation of Rab22a via miR-291a-3p,which activates nuclear factor kappa-B(NF-κB)signaling,leading to activation of the pro-apoptotic B-cell lymphoma 2-associated X protein and inhibition of the anti-apoptotic B-cell lymphoma 2 protein,which exacerbates AD.Tan-ⅡA intervention effectively blocked this process by inhibiting the NEAT1/miR-291a-3p/Rab22a axis and NF-κB signaling.CONCLUSION This study demonstrates that Tan-ⅡA exerts neuroprotective effects in AD by modulating the NEAT1/miR-291a-3p/Rab22a/NF-κB signaling pathway,serving as a foundation for the development of innovative approaches for AD therapy. 展开更多
关键词 TanshinoneⅡA Alzheimer’s disease Nuclear-enriched abundant transcript 1 Member of RAs oncogene family Rab22a Reactive oxygen species
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Research on the Influence of Family Education on Children’s Behavioral Habits
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作者 Jiayi Wen 《Journal of Contemporary Educational Research》 2024年第8期176-180,共5页
Under the background of the all-round deepening of quality education,the cultivation of comprehensive quality has become the main theme of contemporary education reform.Good behavior and habits are of great significan... Under the background of the all-round deepening of quality education,the cultivation of comprehensive quality has become the main theme of contemporary education reform.Good behavior and habits are of great significance to children’s future learning,growth,and development.Through literature review and other methods,this paper analyzes the current situation of children’s family education and the influence of family education on the cultivation of children’s behavioral habits and provides some strategies for cultivating children’s good behavioral habits in family education. 展开更多
关键词 family education Children’s behavior Habit cultivation PARENTs
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A Family of Global Attractors for the Generalized Kirchhoff-Beam Equations
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作者 Guoguang Lin Boshi Chen 《Journal of Applied Mathematics and Physics》 2023年第7期1945-1963,共19页
In this paper, we discuss the existence and uniqueness of global solutions, the existence of the family of global attractors and its dimension estimation for generalized Beam-Kirchhoff equation under initial condition... In this paper, we discuss the existence and uniqueness of global solutions, the existence of the family of global attractors and its dimension estimation for generalized Beam-Kirchhoff equation under initial conditions and boundary conditions, using the previous research results for reference. Firstly, the existence of bounded absorption set is proved by using a prior estimation, then the existence and uniqueness of the global solution of the problem is proved by using the classical Galerkin’s method. Finally, Housdorff dimension and fractal dimension of the family of global attractors are estimated by linear variational method and generalized Sobolev-Lieb-Thirring inequality. 展开更多
关键词 Beam-Kirchhoff Equation Galerkin’s Method family of Global Attractors Housdorff Dimension Fractal Dimension
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Liu混沌系统基于T-S模糊模型的控制方法 被引量:3
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作者 徐利梅 高心 邵士泉 《西南民族大学学报(自然科学版)》 CAS 2006年第5期1030-1032,1035,共4页
论文运用并行分布补偿(PDC)技术建立了Liu混沌系统的T-S模型,并利用Lyapunov稳定性理论和线性矩阵不等式(LMIs)方法,设计了模糊控制器,仿真结果表明,所设计的控制器能有效地控制Liu混沌系统的混沌时间轨迹到其零平衡点,且控制简单可靠.
关键词 liu混沌系统 T-s模糊模型 并行分布补偿技术
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A Story About Mary's Family
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作者 胡亚萍 《疯狂英语(初中天地)》 2002年第42期23-23,共1页
The students were having an English class. "Today you can write a story about your family.I want you to tell me something about your parents and your brothers and sisters, "said Mr Shute. Mary raised her han... The students were having an English class. "Today you can write a story about your family.I want you to tell me something about your parents and your brothers and sisters, "said Mr Shute. Mary raised her hand."What kind of thing shall I write about my parents? "she asked. "Well,"said Mr Shute. "Write about 展开更多
关键词 A story About Mary’s family
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Family and twin studies in inflammatory bowel disease 被引量:11
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作者 Leena Halme Paulina Paavola-Sakki +3 位作者 Ulla Turunen Maarit Lappalainen Martti Frkkil Kimmo Kontula 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第23期3668-3672,共5页
Studies examining the inheritance of inflammatory bowel disease (IBD) within different family groups have been the basis for recent molecular advances in the genetics of IBD. The derived heritability in Crohn's dis... Studies examining the inheritance of inflammatory bowel disease (IBD) within different family groups have been the basis for recent molecular advances in the genetics of IBD. The derived heritability in Crohn's disease (CD) is higher than in many other complex diseases. The risk of IBD is highest in first-degree relatives of a CD proband, but first-degree relatives of a proband suffering from ulcerative colitis (UC) and more distant relatives are also at increased risk. Disease concordance rates in IBD have been examined in multiplex families and in three large European twin studies. 展开更多
关键词 Crohn's disease family studies GENETICs Twin studies Ulcerative colitis
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Structure and function of the contactin-associated protein family in myelinated axons and their relationship with nerve diseases 被引量:8
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作者 Yan Zou Wei-feng Zhang +7 位作者 Hai-ying Liu Xia Li Xing Zhang Xiao-fang Ma Yang Sun Shi-yi Jiang Quan-hong Ma De-en Xu 《Neural Regeneration Research》 SCIE CAS CSCD 2017年第9期1551-1558,共8页
The contactin-associated protein (Caspr) family participates in nerve excitation and conduction, and neurotransmitter release in myelinated axons. We analyzed the structures and functions of the Caspr family- CNTNA... The contactin-associated protein (Caspr) family participates in nerve excitation and conduction, and neurotransmitter release in myelinated axons. We analyzed the structures and functions of the Caspr family- CNTNAP1 (Casprl), CNTNAP2 (Caspr2), CNTNAP3 (Caspr3), CNTNAP4 (Caspr4) and CNTNAP5 (Caspr5), Casprl-5 is not only involved in the formation of myelinated axons, but also participates in maintaining the stability of adjacent connections. Casprl participates in the formation, differentiation, and proliferation of neurons and astrocytes, and in motor control and cognitive function. We also analyzed the relationship between the Caspr family and neurodegenerative diseases, multiple sclerosis, and autoimmune encephalitis. However, the effects of Caspr on disease course and prognosis remain poorly understood. The effects of Caspr on disease diagnosis and treatment need further investigation. 展开更多
关键词 nerve regeneration contactin-associated protein family myelinated axon structure function Alzheimer's disease multiple sclerosis autism spectrum disorders NEURODEGENERATION neural regeneration
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Similar clinical characteristics of familial and sporadic inflammatory bowel disease in South Korea 被引量:2
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作者 Sook Hee Chung Soo Jung Park +4 位作者 Hye Sun Lee Sung Pil Hong Jae Hee Cheon Tae Ⅱ Kim Won Ho Kim 《World Journal of Gastroenterology》 SCIE CAS 2014年第45期17120-17126,共7页
AIM: To investigate differences of clinical characteristics and disease courses between familial and sporadic inflammatory bowel disease (IBD) patients.
关键词 Inflammatory bowel disease family history Crohn’ s disease Ulcerative colitis Clinical characteristics
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Adenomas of the common bile duct in familial adenomatous polyposis 被引量:1
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作者 Mao-Lin Yan Jun-Yong Pan +3 位作者 Yan-Nan Bai Zhi-De Lai Zhong Chen Yao-Dong Wang 《World Journal of Gastroenterology》 SCIE CAS 2015年第10期3150-3153,共4页
Familial adenomatous polyposis(FAP)or Gardner’s syndrome is often accompanied by adenomas of the stomach and duodenum.We experienced a case of adenomas of the common bile duct in a 40-year-old woman with FAP presenti... Familial adenomatous polyposis(FAP)or Gardner’s syndrome is often accompanied by adenomas of the stomach and duodenum.We experienced a case of adenomas of the common bile duct in a 40-year-old woman with FAP presenting with acute cholangitis.Only 8 cases of adenomas or adenocarcinoma ofthe common bile duct have been reported in the literature in patients with FAP or Gardner’s syndrome.Those patients presented with acute cholangitis or pancreatitis.Local excision or Whipple procedure may be the reasonable surgical option. 展开更多
关键词 ACUTE CHOLANGITIs Gardner’s sYNDROME FAMILIAL aden
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Family history and disease outcomes in patients with Crohn's disease:A comparison between China and the United States 被引量:3
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作者 Pei-Qi Wang Jun Hu +12 位作者 Elie S Al Kazzi Eboselume Akhuemonkhan Min Zhi Xiang Gao Raquel Holand de Paula Pessoa Sami Ghazaleh Tuhina Cornelius Suhel Abbas Sabunwala Shadi Ghadermarzi Kartikeya Tripathi Mark Lazarev Pin-Jin Hu Susan Hutfless 《World Journal of Gastrointestinal Pharmacology and Therapeutics》 CAS 2016年第4期556-563,共8页
AIM To investigate the differences in family history of inflammatory bowel disease(IBD) and clinical outcomes among individuals with Crohn's disease(CD) residing in China and the United States.METHODS We performed... AIM To investigate the differences in family history of inflammatory bowel disease(IBD) and clinical outcomes among individuals with Crohn's disease(CD) residing in China and the United States.METHODS We performed a survey-based cross-sectional study of participants with CD recruited from China and the United States.We compared the prevalence of IBD family history and history of ileal involvement,CD-related surgeries and IBD medications in China and the United States,adjusting for potential confounders.RESULTS We recruited 49 participants from China and 145 from the United States.The prevalence of family history of IBD was significantly lower in China compared with the United States(China:4.1%,United States:39.3%).The three most commonly affected types of relatives were cousin,sibling,and parent in the United States compared with child and sibling in China.Ileal involvement(China:63.3%,United States:63.5%) and surgery for CD(China:51.0%,United States:49.7%) were nearly equivalent in the two countries.CONCLUSION The lower prevalence of familial clustering of IBD in China may suggest that the etiology of CD is less attributed to genetic background or a family-shared environment compared with the United States.Despite the potential difference in etiology,surgery and ileal involvement were similar in the two countries.Examining the changes in family history during the continuing rise in IBD may provide further insight into the etiology of CD. 展开更多
关键词 Crohn’s disease family history Disease outcome Inflammatory bowel disease EPIDEMIOLOGY GENETICs ENVIRONMENT MEDICATION sURGERY
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Bortezomib effect on E2F and cyclin family members in human hepatocellular carcinoma cell lines 被引量:1
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作者 Daniele Baiz Barbara Dapas +7 位作者 Rossella Farra Bruna Scaggiante Gabriele Pozzato Fabrizio Zanconati Nicola Fiotti Lara Consoloni Sara Chiaretti Gabriele Grassi 《World Journal of Gastroenterology》 SCIE CAS 2014年第3期795-803,共9页
AIM: To evaluate the effects of the proteasome inhibitor bortezomib (BZB) on E2Fs and related genes in hepatocellular carcinoma (HCC) cells.
关键词 BORTEZOMIB CYCLINs E2F family Hepatocellular carcinoma Liver MICROARRAY 26s proteasome
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Research on the effects of family care degree on stigma and psychosocial adaptation among the patients with Parkinson’s disease 被引量:1
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作者 Yue-Yue He An-Chun Yin 《Frontiers of Nursing》 CAS 2021年第1期69-74,共6页
Objective:This study aimed to investigate the status quo of family care degree,stigma and psychosocial adaptation of the patients with Parkinson’s disease(PD),and discuss the effects of family care degree on stigma a... Objective:This study aimed to investigate the status quo of family care degree,stigma and psychosocial adaptation of the patients with Parkinson’s disease(PD),and discuss the effects of family care degree on stigma and psychosocial adaptation among the patients with PD.Methods:This study was conducted between September 2018 and April 2019 on patients with PD who were admitted to a Ter tiary Grade A hospital in Dalian city.A total of 246 PD patients were investigated by convenience sampling method using self-designed general information questionnaire,along with family care index(APGAR),24-item Stigma Scale for Chronic Illness(SSCI),and Psychosocial Adjustment Scale(PAS)for PD.And patients were divided into two groups according to the level of family care degree and compared with stigma and psychosocial adaptation.Results:The total score of family care for patients with PD was 6.97±2.46,family function was good in 132 cases(53.7%),moderate barrier in 92 cases(37.4%),and severe barrier in 22 cases(8.9%).The scores of stigma and psychosocial adaptability and their dimensions in the group with high degree family care were higher than the low degree group.Conclusions:The overall level of family care for PD patients was poor.Improving family care degree can help patients with PD to reduce stigma and improve psychosocial adaptation. 展开更多
关键词 Parkinson’s disease family care sTIGMA psychosocial adaptability quality of life
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The role of DJ-1 complexes and catecholamine metabolism: relevance for familial and idiopathic Parkinson's disease 被引量:1
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作者 Dominik Piston Matthew E.Gegg 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第5期815-816,共2页
Autosomal recessive mutations in the PARK7 gene,which encodes for the protein DJ-1,result in a loss of function and are a cause of familial Parkinson’s disease(PD),while increased wild-type DJ-1protein levels are a... Autosomal recessive mutations in the PARK7 gene,which encodes for the protein DJ-1,result in a loss of function and are a cause of familial Parkinson’s disease(PD),while increased wild-type DJ-1protein levels are associated with some forms of cancer.Several functions of DJ-1 have been described,with the greatest evidence indicating that DJ-1 is a redox-sensitive protein involved in the regulation of oxidative stress and cell survival. 展开更多
关键词 The role of DJ-1 complexes and catecholamine metabolism relevance for familial and idiopathic Parkinson’s disease GBA DA
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A Family of Global Attractors for a Class of Generalized Kirchhoff-Beam Equations 被引量:3
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作者 Yuhuai Liao Guoguang Lin Jie Liu 《Journal of Applied Mathematics and Physics》 2022年第3期930-951,共22页
The initial boundary value problem for a class of high-order Beam equations with quasilinear and strongly damped terms is studied. Firstly, the existence and uniqueness of the global solution of the equation are prove... The initial boundary value problem for a class of high-order Beam equations with quasilinear and strongly damped terms is studied. Firstly, the existence and uniqueness of the global solution of the equation are proved by prior estimation and Galerkin finite element method. Then the bounded absorption set is obtained by prior estimation, and the family of global attractors for the high-order Kirchhoff-Beam equation is obtained. The Frechet differentiability of the solution semigroup is proved after the linearization of the equation, and the decay of the volume element of the linearization problem is further proved. Finally, the Hausdorff dimension and Fractal dimension of the family of global attractors are proved to be finite. 展开更多
关键词 High-Order Kirchhoff-Beam Equation Galerkin’s Method family of Global Attractors The Hausdorff Dimension
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Treatment of Crohn's disease and familial Mediterranean fever by leukopheresis:Single shot for two targets
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作者 Mahmut Yuksel Fatih Saygili +6 位作者 Orhan Coskun Nuretdin Suna Mustafa Kaplan Ufuk Baris Kuzu Zeki Mesut Yalin Kilic Yasemin Ozderin Ozin Ertugrul Kayacetin 《World Journal of Gastroenterology》 SCIE CAS 2015年第13期4078-4081,共4页
Coexistence of Crohn's disease(CD) and familial Mediterranean fever(FMF) is a rare condition and knowledge about this clinical situation is limited with a few case reports in the literature. The treatment of both ... Coexistence of Crohn's disease(CD) and familial Mediterranean fever(FMF) is a rare condition and knowledge about this clinical situation is limited with a few case reports in the literature. The treatment of both diseases depends on their individual therapies. However, it is very hard to deal with this coexistence when CD is refractory to standard therapies. Ongoing activity of CD triggers the clinical attacks of FMF and the symptoms like abdominal pain interfere with both disease presentations which can cause problems about diagnostic and therapeutic approach. The main therapeutic agent for FMF is colchicine and diarrhea is the most common side effect of this drug. This side effect also causes problems about management of these diseases when both of them are clinically active. Here we report probably the first case in the literature with coexisting CD and FMF who was successfully treated by leukopheresis since he was refractory to conventional therapies for CD. 展开更多
关键词 Crohn’s DIsEAsE FAMILIAL Mediterranean FEVER Leuko
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A New Approach for Impulsive Stabilization of Liu's System
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作者 刘洋 赵寿为 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第5期994-998,共5页
An impulsive control scheme of Liu's system is presented in this paper. Some less conservative conditions with impulses at fixed times are provided, which can guarantee the global asymptotical stability and global ex... An impulsive control scheme of Liu's system is presented in this paper. Some less conservative conditions with impulses at fixed times are provided, which can guarantee the global asymptotical stability and global exponential stability for the impulsive control of Liu's systems. We also present the estimate of the stable region for the equidistance impulsive interval. Furthermore, an illustrative example is given to show the effectiveness of the proposed results. 展开更多
关键词 impulsive control lius system global asymptotical stability global exponential stability
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PARK1 gene mutation of autosomal dominant Parkinson's disease family
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作者 Ligang Jiang Qiuhui Chen +7 位作者 Ying Zhang Xinyu Hu Jia Fan Lifeng Liu Rui Guo Yajuan Sun Yizhi Zhang Guohua Hu 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第5期330-334,共5页
Studies have shown that PARK1 gene is associated with the autosomal dominant inheritance of Parkinson's disease. PARK1 gene contains two mutation sites, namely Ala30Pro and Ala53Thr, which are located on exons 3 and ... Studies have shown that PARK1 gene is associated with the autosomal dominant inheritance of Parkinson's disease. PARK1 gene contains two mutation sites, namely Ala30Pro and Ala53Thr, which are located on exons 3 and 4, respectively. However, the genetic loci of the pathogenic genes remain unclear. In this study, blood samples were collected from 11 members of a family with high prevalence of Parkinson's disease, including four affected cases, five suspected cases and two non-affected cases. Point mutation screening of common mutation sites on PARK1 gene exon 4 was conducted using PCR, to determine the genetic loci of the causative gene for Parkinson's disease. Gene identification and sequencing results showed that a T base deletion mutation was observed in the PARK1 gene exon 4 of all 11 collected samples. It was confirmed that the PARK1 gene exon 4 gene mutation is an important pathogenic mutation for Parkinson's disease. 展开更多
关键词 Parkinson's disease family GENETIC PARK1 gene MUTATION neurodegenerative disease
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割手密GST基因家族的分析及其对阿特拉津的响应
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作者 林焕泰 薛耀威 +1 位作者 高三基 王锦达 《福建农林大学学报(自然科学版)》 CSCD 北大核心 2023年第5期582-590,共9页
从全基因组的角度分析了割手密谷胱苷肽⁃S⁃转移酶(GST)基因家族成员的特征,共鉴定出129个GST。通过对割手密GST蛋白的系统发育分析,发现这些GST可以划分为4个亚家族,且每个亚家族内的蛋白排列紧凑,说明同亚族内部基因进化关系均比较亲... 从全基因组的角度分析了割手密谷胱苷肽⁃S⁃转移酶(GST)基因家族成员的特征,共鉴定出129个GST。通过对割手密GST蛋白的系统发育分析,发现这些GST可以划分为4个亚家族,且每个亚家族内的蛋白排列紧凑,说明同亚族内部基因进化关系均比较亲近。此外,对在阿特拉津处理下GST基因家族中10个F亚族基因的表达水平进行检测,结果表明,根中的SpGSTF1、SpGSTF9、SpGSTF14、SpGSTF16、SpGSTF18、SpGSTF31在阿特拉津胁迫下表达显著上调,推测这6个基因可能在响应阿特拉津胁迫的过程中起重要作用。研究结果有助于揭示割手密GST家族的进化和功能演替,并对进一步了解割手密GST对阿特拉津的解毒响应机制提供理论参考,同时也为培养抗除草剂甘蔗品种提供基因资源。 展开更多
关键词 割手密 谷胱甘肽⁃s⁃转移酶 基因家族分析 阿特拉津
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Pressure-induced phase transitions in the ZrXY(X=Si,Ge,Sn;Y=S,Se,Te)family compounds
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作者 Qun Chen Juefei Wu +5 位作者 Tong Chen Xiaomeng Wang Chi Ding Tianheng Huang Qing Lu Jian Sun 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第5期553-560,共8页
Pressure is an effective and clean way to modify the electronic structures of materials,cause structural phase transitions and even induce the emergence of superconductivity.Here,we predicted several new phases of the... Pressure is an effective and clean way to modify the electronic structures of materials,cause structural phase transitions and even induce the emergence of superconductivity.Here,we predicted several new phases of the Zr XY family at high pressures using the crystal structures search method together with first-principle calculations.In particular,the Zr Ge S compound undergoes an isosymmetric phase transition from P4/nmm-I to P4/nmm-II at approximately 82 GPa.Electronic band structures show that all the high-pressure phases are metallic.Among these new structures,P4/nmm-II Zr Ge S and P4/mmm Zr Ge Se can be quenched to ambient pressure with superconducting critical temperatures of approximately 8.1 K and 8.0 K,respectively.Our study provides a way to tune the structure,electronic properties,and superconducting behavior of topological materials through pressure. 展开更多
关键词 high pressure ZrXY(X=si Ge sN Y=s sE Te)family phase transition superconducting temperature
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Structure-Function Relationship of a Gellan Family of Polysaccharide, S-198 Gum, Produced by Alcaligenes ATCC31853 被引量:1
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作者 Masakuni Tako Seiko kitajima +4 位作者 Takuya Yogi Keiko Uechi Masayuki Onaga Yukihiro Tamaki Shuntoku Uechi 《Advances in Biological Chemistry》 2016年第3期55-69,共15页
The structure-function relationship of a gellan family of polysaccharides, S-198 gum produced by Alcaligenes ATCC31853 was investigated in terms of rheological aspects. The flow curves of S-198 gum showed plastic beha... The structure-function relationship of a gellan family of polysaccharides, S-198 gum produced by Alcaligenes ATCC31853 was investigated in terms of rheological aspects. The flow curves of S-198 gum showed plastic behavior above 0.3%. Gelation did not occur in S-198 gum solution at low temperature (0℃), even at 0.8%. Both the viscosity and the elastic modulus remained constant with increasing temperature up to 80?C. The elastic modulus decreased a little with the addition of CaCl2 (6.8 mM), but then once again remained constant up to 80℃. The highest elastic modulus was observed for deacylated gellan gum with the addition of CaCl2 and increased slightly with increasing temperature up to 80℃, which was considered to be a transition temperature, after which it decreased rapidly. The elastic modulus of S-198 gum in the presence of urea (4.0 M) was lower than that in aqueous solution at low temperature (0℃), but remained constant with increasing temperature up to 80℃. The intramolecular associations, (hydrogen bonding and van der Waals forces of attraction), of S-198 gum molecules in aqueous solutions were proposed. The gellan family of polysaccharides, S-198, S-88, S-657, rhamsan, welan and gellan gum, provided a good opportunity to investigate the structure-function relationship for polysaccharides. 展开更多
关键词 s-198 Gum Alcaligenes ATCC31853 Thermal stability Intramolecular Associations Gellan family of Polysaccharide
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