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Erythropoietin-induced hepatocyte receptor A2 regulates effect of pyroptosis on gastrointestinal colorectal cancer occurrence and metastasis resistance
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作者 Yu-Kun Zhang Ran Shi +2 位作者 Ruo-Yu Meng Shui-Li Lin Mei Zheng 《World Journal of Gastrointestinal Oncology》 SCIE 2024年第9期3781-3797,共17页
Erythropoietin-induced hepatocyte receptor A2(EphA2)is a receptor tyrosine kinase that plays a key role in the development and progression of a variety of tumors.This article reviews the expression of EphA2 in gastroi... Erythropoietin-induced hepatocyte receptor A2(EphA2)is a receptor tyrosine kinase that plays a key role in the development and progression of a variety of tumors.This article reviews the expression of EphA2 in gastrointestinal(GI)colorectal cancer(CRC)and its regulation of pyroptosis.Pyroptosis is a form of programmed cell death that plays an important role in tumor suppression.Studies have shown that EphA2 regulates pyrodeath through various signaling pathways,affecting the occurrence,development and metastasis of GI CRC.The overexpression of EphA2 is closely related to the aggressiveness and metastasis of GI CRC,and the inhibition of EphA2 can induce pyrodeath and improve the sensitivity of cancer cells to treatment.In addition,EphA2 regulates intercellular communication and the microenvironment through interactions with other cytokines and receptors,further influencing cancer progression.The role of EphA2 in GI CRC and its underlying mechanisms provide us with new perspectives and potential therapeutic targets,which have important implications for future cancer treatment. 展开更多
关键词 Colorectal cancer PYROPTOSIS Erythropoietin-induced hepatocyte receptor A2 Tumor metastasis Drug resistance
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Therapeutic effects of Lingguizhugan decoction in a rat model of high-fat diet-induced insulin resistance
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作者 Xiao-Ming Liu Shi-Qing Yuan +4 位作者 Ying Ning Shi-Jia Nie Xu-Qiong Wang Hong-Yi Jia Xiu-Li Zheng 《World Journal of Diabetes》 SCIE 2024年第6期1291-1298,共8页
BACKGROUND Lingguizhugan(LGZG)decoction is a widely used classic Chinese medicine formula that was recently shown to improve high-fat diet(HFD)-induced insulin resistance(IR)in animal studies.AIM To assess the therape... BACKGROUND Lingguizhugan(LGZG)decoction is a widely used classic Chinese medicine formula that was recently shown to improve high-fat diet(HFD)-induced insulin resistance(IR)in animal studies.AIM To assess the therapeutic effect of LGZG decoction on HFD-induced IR and explore the potential underlying mechanism.METHODS To establish an IR rat model,a 12-wk HFD was administered,followed by a 4-wk treatment with LGZG.The determination of IR status was achieved through the use of biochemical tests and oral glucose tolerance tests.Using a targeted metabolomics platform to analyze changes in serum metabolites,quantitative real-time PCR(qRT-PCR)was used to assess the gene expression of the ribosomal protein S6 kinase beta 1(S6K1).RESULTS In IR rats,LGZG decreased body weight and indices of hepatic steatosis.It effectively controlled blood glucose and food intake while protecting islet cells.Metabolite analysis revealed significant differences between the HFD and HFDLGZG groups.LGZG intervention reduced branched-chain amino acid levels.Levels of IR-related metabolites such as tryptophan,alanine,taurine,and asparagine decreased significantly.IR may be linked to amino acids due to the contemporaneous increase in S6K1 expression,as shown by qRT-PCR.CONCLUSIONS Our study strongly suggests that LGZG decoction reduces HFD-induced IR.LGZG may activate S6K1 via metabolic pathways.These findings lay the groundwork for the potential of LGZG as an IR treatment. 展开更多
关键词 Lingguizhugan decoction High-fat diet-induced insulin resistance Amino acid metabolism S6K1
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GPa-level pressure-induced enhanced corrosion resistance in TiZrTaNbSn biomedical high-entropy alloy
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作者 Xiao-hong Wang Yu-lei Deng +6 位作者 Qiao-yu Li Zhi-xin Xu Teng-fei Ma Xing Yang Duo Dong Dong-dong Zhu Xiao-hong Yang 《China Foundry》 SCIE EI CAS CSCD 2024年第3期265-275,共11页
TiZrTaNb-based high-entropy alloys(HEAs)are research frontier of biomedical materials due to their high hardness,good yield strength,excellent wear resistance and corrosion resistance.Sn,as an essential trace element ... TiZrTaNb-based high-entropy alloys(HEAs)are research frontier of biomedical materials due to their high hardness,good yield strength,excellent wear resistance and corrosion resistance.Sn,as an essential trace element in the human body that plays a significant role in physiological process.It has stable chemical properties and a low elastic modulus.In this study,a new material,TiZrTaNbSn HEAs,was proposed as a potential biomedical alloy.The Ti_(35)Zr_(25)Ta_(15)Nb_(15)Sn_(10)biomedical high-entropy alloys(BHEAs)were successfully prepared through an arc melting furnace and then remelted using a German high-temperature and high-pressure apparatus under GPa-level(4 GPa and 7 GPa).The precipitation behavior of the needle-like HCP-Zr_(5)Sn_(3)phase that precipitates discontinuously at the grain boundary was successfully controlled.The phase constitution,microstructure,and corrosion resistance of the alloy were studied.The results show that the needle-like HCP-Zr_(5)Sn_(3)phase is eliminated and the(Zr,Sn)-rich nano-precipitated phase is precipitated in the microstructure under high pressure,which leads to the narrowing of grain boundaries and consequently improves the corrosion resistance of the alloy.In addition,the formation mechanisms of(Zr,Sn)-rich nanoprecipitates in BHEAs were discussed.More Zr and Sn dissolve in the matrix due to the effect of high pressure,during the cooling process,they precipitate to form a(Zr,Sn)-rich nano-precipitated phase. 展开更多
关键词 biomedical HEAs precipitation grain boundary corrosion resistance TiZrTaNbSn
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Bio-cementation for tidal erosion resistance improvement of foreshore slopes based on microbially induced magnesium and calcium precipitation
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作者 Xiaohao Sun Junjie Wang +3 位作者 Hengxing Wang Linchang Miao Ziming Cao Linyu Wu 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第5期1696-1708,共13页
In most coastal and estuarine areas,tides easily cause surface erosion and even slope failure,resulting in severe land losses,deterioration of coastal infrastructure,and increased floods.The bio-cementation technique ... In most coastal and estuarine areas,tides easily cause surface erosion and even slope failure,resulting in severe land losses,deterioration of coastal infrastructure,and increased floods.The bio-cementation technique has been previously demonstrated to effectively improve the erosion resistance of slopes.Seawater contains magnesium ions(Mg^(2+))with a higher concentration than calcium ions(Ca^(2+));therefore,Mg^(2+)and Ca^(2+)were used together for bio-cementation in this study at various Mg^(2+)/Ca^(2+)ratios as the microbially induced magnesium and calcium precipitation(MIMCP)treatment.Slope angles,surface strengths,precipitation contents,major phases,and microscopic characteristics of precipitation were used to evaluate the treatment effects.Results showed that the MIMCP treatment markedly enhanced the erosion resistance of slopes.Decreased Mg^(2+)/Ca^(2+)ratios resulted in a smaller change in angles and fewer soil losses,especially the Mg^(2+)concentration below 0.2 M.The decreased Mg^(2+)/Ca^(2+)ratio achieved increased precipitation contents,which contributed to better erosion resistance and higher surface strengths.Additionally,the production of aragonite would benefit from elevated Mg^(2+)concentrations and a higher Ca^(2+)concentration led to more nesquehonite in magnesium precipitation crystals.The slopes with an initial angle of 53°had worse erosion resistance than the slopes with an initial angle of 35°,but the Mg^(2+)/Ca^(2+)ratios of 0.2:0.8,0.1:0.9,and 0:1.0 were effective for both slope stabilization and erosion mitigation to a great extent.The results are of great significance for the application of MIMCP to improve erosion resistance of foreshore slopes and the MIMCP technique has promising application potential in marine engineering. 展开更多
关键词 Bio-cementation Erosion resistance Foreshore slope stabilization Magnesium ions Calcium ions
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Effects of axylitol-casein complex on insulin resistance and gut microbiota composition in high-fat-diet+streptozotocin-induced type 2 diabetes mellitus mice
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作者 Fanhua Kong Juan Zhang +5 位作者 Shimo Kang Xinyu Shen Aicheng Liu Yan Zheng Junhua Shao Xiqing Yue 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第5期2741-2753,共13页
This study investigated the effects of a xylitol-casein non-covalent complex(XC)on parameters related to type 2 diabetes mellitus(T2DM),in addition to related changes in gut microbiome composition and functions.High-f... This study investigated the effects of a xylitol-casein non-covalent complex(XC)on parameters related to type 2 diabetes mellitus(T2DM),in addition to related changes in gut microbiome composition and functions.High-fat-diet(HFD)+streptozotocin(STZ)-induced T2DM mice were treated with xylitol(XY),casein(CN),and XC,after which fecal samples were collected for gut microbiota composition and diversity analyses based on 16S rRNA high-throughput sequencing and multivariate statistics.XC decreased body weight and improved glucose tolerance,insulin sensitivity,pancreas impairment,blood lipid levels,and liver function in T2DM mice compared to XY-and CN-treated mice.Furthermore,XC modulated theα-diversity,β-diversity and gut microbiota composition.Based on Spearman’s correlation analysis,the relative abundances of Alistipes,Bacteroides,and Faecalibaculum were positively correlated and those of Akkermansia,Lactobacillus,Bifidobacterium,and Turicibacter were negatively correlated with the phenotypes related to the improvement of T2DM.In conclusion,we found that XC alleviated insulin resistance by restoring the gut microbiota of T2DM mice.Our results provide strong evidence for the beneficial effects of XC on T2DM and motivation for further investigation in animal models and,eventually,human trials. 展开更多
关键词 Xylitol-casein complex Type 2 diabetes mellitus Insulin resistance Gut microbiota
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NQO1 Mediates Lenvatinib Resistance by Regulating ROS-induced Apoptosis in Hepatocellular Carcinoma
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作者 Wei XUE Ting WANG +3 位作者 Wen-jing TIAN Si-qi PANG Hua-feng ZHANG Wei-dong JIA 《Current Medical Science》 SCIE CAS 2024年第1期168-179,共12页
Objective Hepatocellular carcinoma(HCC)is the third leading cause of cancer-associated death worldwide.As a first-line drug for advanced HCC treatment,lenvatinib faces a significant hurdle due to the development of bo... Objective Hepatocellular carcinoma(HCC)is the third leading cause of cancer-associated death worldwide.As a first-line drug for advanced HCC treatment,lenvatinib faces a significant hurdle due to the development of both intrinsic and acquired resistance among patients,and the underlying mechanism remains largely unknown.The present study aims to identify the pivotal gene responsible for lenvatinib resistance in HCC,explore the potential molecular mechanism,and propose combinatorial therapeutic targets for HCC management.Methods Cell viability and colony formation assays were conducted to evaluate the sensitivity of cells to lenvatinib and dicoumarol.RNA-Seq was used to determine the differences in transcriptome between parental cells and lenvatinib-resistant(LR)cells.The upregulated genes were analyzed by GO and KEGG analyses.Then,qPCR and Western blotting were employed to determine the relative gene expression levels.Afterwards,the intracellular reactive oxygen species(ROS)and apoptosis were detected by flow cytometry.Results PLC-LR and Hep3B-LR were established.There was a total of 116 significantly upregulated genes common to both LR cell lines.The GO and KEGG analyses indicated that these genes were involved in oxidoreductase and dehydrogenase activities,and reactive oxygen species pathways.Notably,NAD(P)H:quinone oxidoreductase 1(NQO1)was highly expressed in LR cells,and was involved in the lenvatinib resistance.The high expression of NQO1 decreased the production of ROS induced by lenvatinib,and subsequently suppressed the apoptosis.The combination of lenvatinib and NQO1 inhibitor,dicoumarol,reversed the resistance of LR cells.Conclusion The high NQO1 expression in HCC cells impedes the lenvatinib-induced apoptosis by regulating the ROS levels,thereby promoting lenvatinib resistance in HCC cells. 展开更多
关键词 hepatocellular carcinoma lenvatinib resistance NAD(P)H quinone oxidoreductase 1 reactive oxygen species apoptosis DICOUMAROL
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Increase in root density induced by coronatine improves maize drought resistance in North China 被引量:2
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作者 Yuling Guo Guanmin Huang +6 位作者 Qing Guo Chuanxi Peng Yingru Liu Mingcai Zhang Zhaohu Li Yuyi Zhou Liusheng Duan 《The Crop Journal》 SCIE CSCD 2023年第1期278-290,共13页
Drought stress caused by insufficient irrigation or precipitation impairs agricultural production worldwide.In this study,a two-year field experiment was conducted to investigate the effect of coronatine(COR),a functi... Drought stress caused by insufficient irrigation or precipitation impairs agricultural production worldwide.In this study,a two-year field experiment was conducted to investigate the effect of coronatine(COR),a functional analog of jasmonic acid(JA),on maize drought resistance.The experiment included two water treatments(rainfed and irrigation),four COR concentrations(mock,0μmol L^(-1);A1,0.1μmol L^(-1);A2,1μmol L^(-1);A3,10μmol L^(-1))and two maize genotypes(Fumin 985(FM985),a drought-resistant cultivar and Xianyu 335(XY335),a drought-sensitive cultivar).Spraying 1μmol L^(-1)COR at seedling stage increased surface root density and size,including root dry matter by 12.6%,projected root area by 19.0%,average root density by 51.9%,and thus root bleeding sap by 28.2%under drought conditions.COR application also increased leaf area and SPAD values,a result attributed to improvement of the root system and increases in abscisic acid(ABA),JA,and salicylic acid(SA)contents.The improvement of leaves and roots laid the foundation for increasing plant height and dry matter accumulation.COR application reduced anthesis and silking interval,increasing kernel number per ear.COR treatment at 1μmol L^(-1)increased the yield of XY335 and FM985 by 7.9%and 11.0%,respectively.Correlation and path analysis showed that grain yields were correlated with root dry weight and projected root area,increasing maize drought resistance mainly via leaf area index and dry matter accumulation.Overall,COR increased maize drought resistance mainly by increasing root dry weight and root area,with 1μmol L-^(-1)COR as an optimal concentration. 展开更多
关键词 MAIZE Drought resistance CORONATINE Root development Grain yields
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Effects of β-Amino Butyric Acid Induced Rice Blast Resistance on Reactive Oxygen Metabolism 被引量:5
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作者 李莉 郭晓丽 +5 位作者 刘晓梅 温嘉伟 张秀容 孙辉 赵宇 任金平 《Agricultural Science & Technology》 CAS 2009年第3期112-114,共3页
[Objective] This study was to understand the effects of β-Amino butyric acid(abbreviated as BABA) induced rice blast resistance on reactive oxygen metabolism. [Method] Using the cultivar Chaochan 2 that is highly sus... [Objective] This study was to understand the effects of β-Amino butyric acid(abbreviated as BABA) induced rice blast resistance on reactive oxygen metabolism. [Method] Using the cultivar Chaochan 2 that is highly susceptible to disease as experimental material, the changes of catalase(CAT), and superoxide dismutase(SOD) and MDA activities in rice treated by BABA were investigated. [Result] In rice plants treated by BABA, the activities of CAT and SOD increased, meanwhile the MDA content also rose to some extent, resulting in the disease resistance to rice blast. [Conclusion] By influencing reactive oxygen metabolism, BABA endows rice plants with resistance to rice blast. BABA is safe to environment and has highly resistance-inducing capacity, it could be generalized in production. 展开更多
关键词 β-Amino butyric acid Rice blast induced resistance
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Bending Resistance Covalent Organic Framework Superlattice:“Nano‑Hourglass”‑Induced Charge Accumulation for Flexible In‑Plane Micro‑Supercapacitors
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作者 Xiaoyang Xu Zhenni Zhang +6 位作者 Rui Xiong Guandan Lu Jia Zhang Wang Ning Shuozhen Hu Qingliang Feng Shanlin Qiao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第2期198-211,共14页
Covalent organic framework(COF)film with highly exposed active sites is considered as the promising flexible selfsupported electrode for in-plane microsupercapacitor(MSC).Superlattice configuration assembled alternate... Covalent organic framework(COF)film with highly exposed active sites is considered as the promising flexible selfsupported electrode for in-plane microsupercapacitor(MSC).Superlattice configuration assembled alternately by different nanofilms based on van der Waals force can integrate the advantages of each isolated layer to exhibit unexpected performances as MSC film electrodes,which may be a novel option to ensure energy output.Herein,a mesoporous free-standing A-COF nanofilm(pore size is 3.9 nm,averaged thickness is 4.1 nm)with imine bond linkage and a microporous B-COF nanofilm(pore size is 1.5 nm,averaged thickness is 9.3 nm)withβ-keto-enamine-linkages are prepared,and for the first time,we assembly the two lattice matching films into sandwich-type superlattices via layer-by-layer transfer,in which ABA–COF superlattice stacking into a“nano-hourglass”steric configuration that can accelerate the dynamic charge transportation/accumulation and promote the sufficient redox reactions to energy storage.The fabricated flexible MSC–ABA–COF exhibits the highest intrinsic CV of 927.9 F cm^(−3) at 10 mV s^(−1) than reported two-dimensional alloy,graphite-like carbon and undoped COF-based MSC devices so far,and shows a bending-resistant energy density of 63.2 mWh cm^(−3) even after high-angle and repeat arbitrary bending from 0 to 180°.This work provides a feasible way to meet the demand for future miniaturization and wearable electronics. 展开更多
关键词 In-plane micro-supercapacitor Covalent organic framework Free-standing nanofilm SUPERLATTICE Bending resistance
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Effects of Tuina on Obesity-Induced Insulin Resistance and Cognitive Dysfunction
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作者 Mingjun LIU Xiaochao GANG +9 位作者 Chongwen ZHONG Shaotao CHEN Yuxing TAI Yi TAN Likun ZHENG Zhengri CONG Sixian WANG Peizhe LI Qifan GUAN Yiduo LI 《Medicinal Plant》 CAS 2023年第1期87-89,共3页
This paper discusses the mechanism of insulin resistance in obesity from the research progress of Chinese and Western medicine and its oxidative stress,inflammatory reaction and abnormal lipid metabolism in cognitive ... This paper discusses the mechanism of insulin resistance in obesity from the research progress of Chinese and Western medicine and its oxidative stress,inflammatory reaction and abnormal lipid metabolism in cognitive dysfunction.It also reviews the research progress of massage,one of the external treatment methods of traditional Chinese medicine,in the treatment of insulin resistance and cognitive dysfunction in obesity,in order to provide more new ideas and new ways for clinical diagnosis and treatment of insulin resistance and related cognitive dysfunction caused by obesity. 展开更多
关键词 TUINA OBESITY Insulin resistance Cognitive dysfunction
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Tomato Resistance to Botrytis cinerea Induced by Chitosan 被引量:8
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作者 顾丽嫱 《Agricultural Science & Technology》 CAS 2011年第4期537-540,共4页
[Objective] The aim was to explore the effect of tomato's resistance to Botrytis cinerea induced by exogenous Chitosan.[Method] The leaf spraying method was used to determine the induced resistance effect of Chitosan... [Objective] The aim was to explore the effect of tomato's resistance to Botrytis cinerea induced by exogenous Chitosan.[Method] The leaf spraying method was used to determine the induced resistance effect of Chitosan to tomato B.cinerea and the chlorophyll content,soluble protein,soluble sugar,proline influence,the activities of peroxidase(POD),malondialdehyde(MDA)and the Proline content in leaves of tomato.[Result] The induced resistance of Chitosan reached 58.26% at 14th d after treatment;Compared with the B.cinerea stress group,the chlorophyll content in leaves of tomato seedlings of B.cinerea stress + Chitosan group had increased by 34.63%,while that of soluble protein content,soluble sugar content,Pro content and POD activity was 5.30%,10.83%,16.21% and 16.88%,respectively(except for the MDA content,which was decreased by 16.54%).[Conclusion] Exogenous Chitosan could improve photosynthetic efficiency and protect enzymes activity to improve the resistance of tomato seedlings to B.cinerea. 展开更多
关键词 CHITOSAN TOMATO Botrytis cinerea induced resistance
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Induced Resistance of Tomato against Gray Mold (Botrytis cinerea) by Salicylic Acid (SA) 被引量:1
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作者 Jia LIU 《Plant Diseases and Pests》 CAS 2012年第2期60-63,共4页
[ Objective ] The paper was to explore the induced resistance of tomato against gray mold (Botrytis cinerea) by salicylic acid. [ Method ] SA was used as an inducer to treat tomato seedlings, the effects of SA on my... [ Objective ] The paper was to explore the induced resistance of tomato against gray mold (Botrytis cinerea) by salicylic acid. [ Method ] SA was used as an inducer to treat tomato seedlings, the effects of SA on mycelial diameter and spore germination of B. cinerea were studied, and the changes of 4 defense enzyme activities containing catalase (CAT), peroxidase (POD), polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL), as well as malondialdehyde (MDA) content during the production process of induced resistance were also measured. [ Result] SA had no inhibitory effect against spore germination and myce- lial growth of B. cinerea within the concentration range, and the relative induced effect had different degrees of improvement after treatment. The induced effect was the best as B. cinerea was challenged to inoculate at the third day after using 150 mg/L SA in tomato plants, and the duration of resistance was 10 -15 d. After treated by SA, CAT, POD, PPO and PAL first increased and then decreased in systemic induced resistance against B. cinerea, which were significantly higher than control. Meanwhile, MDA content showed ascendant trend in wavy line form. [ Conclusion ] The use of SA within a certain concentration range is safe; CAT, POD, PPO and PAL activities have positive correlation with induced resistance against B. cinerea, the increase of MDA content also has close relationship with the imvrovement of disease resistance. 展开更多
关键词 TOMATO Gray mold Salicylic acid Mechanism of systemic resistance Systemic induced resistance China
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BABA-induced pathogen resistance: a multi-omics analysis of the tomato response reveals a hyper-receptive status involving ethylene
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作者 Martina Zapletalova Corinne Rancurel +10 位作者 Benoit Industri Marc Bardin Kevin Le Brigand Philippe Nicot Virginie Magnone Aurelie Seassau Pascal Barbry David Potesil Zbynek Zdrahal Michel Ponchet Jan Lochman 《Horticulture Research》 SCIE CSCD 2023年第6期16-29,共14页
Prior exposure to microbial-associated molecular patterns or specific chemical compounds can promote plants into a primed state with stronger defence responses.β-aminobutyric acid(BABA)is an endogenous stress metabol... Prior exposure to microbial-associated molecular patterns or specific chemical compounds can promote plants into a primed state with stronger defence responses.β-aminobutyric acid(BABA)is an endogenous stress metabolite that induces resistance protecting various plants towards diverse stresses.In this study,by integrating BABA-induced changes in selected metabolites with transcriptome and proteome data,we generated a global map of the molecular processes operating in BABA-induced resistance(BABA-IR)in tomato.BABA significantly restricts the growth of the pathogens Oidium neolycopersici and Phytophthora parasitica but not Botrytis cinerea.A cluster analysis of the upregulated processes showed that BABA acts mainly as a stress factor in tomato.The main factor distinguishing BABA-IR from other stress conditions was the extensive induction of signaling and perception machinery playing a key role in effective resistance against pathogens.Interestingly,the signalling processes and immune response activated during BABA-IR in tomato differed from those in Arabidopsis with substantial enrichment of genes associated with jasmonic acid(JA)and ethylene(ET)signalling and no change in Asp levels.Our results revealed key differences between the effect of BABA on tomato and other model plants studied until now.Surprisingly,salicylic acid(SA)is not involved in BABA downstream signalization whereas ET and JA play a crucial role. 展开更多
关键词 BABA resistance ANALYSIS
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Development of homozygous tetraploid potato and whole genome doubling-induced the enrichment of H3K27ac and potentially enhanced resistance to cold-induced sweetening in tubers
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作者 Hongwei Guo Min Zhou +8 位作者 Guoyan Zhang Li He Caihong Yan Min Wan Jianjun Hu Wei He Deying Zeng Bo Zhu Zixian Zeng 《Horticulture Research》 SCIE CSCD 2023年第3期271-283,共13页
Polyploid plants typically display advantages on some agronomically important traits over their diploid counterparts.Extensive studies have shown genetic,transcriptomic,and epigenetic dynamics upon polyploidization in... Polyploid plants typically display advantages on some agronomically important traits over their diploid counterparts.Extensive studies have shown genetic,transcriptomic,and epigenetic dynamics upon polyploidization in multiple plant species.However,few studies have unveiled those alternations imposed only by ploidy level,without any interference from heterozygosity.Cultivated potato is highly heterozygous.Thus,in this study,we developed two homozygous autotetraploid lines and one homozygous diploid line in parallel from a homozygous diploid potato.We confirmed their ploidy levels using chloroplast counting and karyotyping.Oligo-FISH and genome re-sequencing validated that these potato lines are nearly homozygous.We investigated variations in phenotypes,transcription,and histone modifications between two ploidies.Both autotetraploid lines produced larger but fewer tubers than the diploid line.Interestingly,each autotetraploid line displayed ploidy-related differential expression for various genes.We also discovered a genomewide enrichment of H3K27ac in genic regions upon whole-genome doubling(WGD).However,such enrichment was not associated with the differential gene expression between two ploidies.The tetraploid lines may exhibit better resistance to cold-induced sweetening(CIS)than the diploid line in tubers,potentially regulated through the expression of CIS-related key genes,which seems to be associated with the levels of H3K4me3 in cold-stored tubers.These findings will help to understand the impacts of autotetraploidization on dynamics of phenotypes,transcription,and histone modifications,as well as on CIS-related genes in response to cold storage. 展开更多
关键词 HOMOZYGOUS doubling resistance
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Induced Resistance by the Toxin Filtrate of Bipolaris maydis Race T Cultivation 被引量:15
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作者 MA Chun-hong ZHAI Cai-xia +5 位作者 WANG Li-an CHEN Xia LI Yun-chao GUO Xiu-lin CUI Si-ping LI Guang-min 《Agricultural Sciences in China》 CAS CSCD 2006年第9期678-684,共7页
Resistance to maize southern leaf spot disease was induced by the low-concentration filtrate of Bipolaris maydis race T cultivation in an experiment. The nuclear neterogeny corn C103 was used as the test material. The... Resistance to maize southern leaf spot disease was induced by the low-concentration filtrate of Bipolaris maydis race T cultivation in an experiment. The nuclear neterogeny corn C103 was used as the test material. The lesion area on the leaves was significant difference by connalysis. The lesion areas on pretreated leaves were (0.3±0.05)- (0.9±0.5) mm^2, but those on the control were (23.1±8.7) mm^2. At the same time, the changes in peroxidase, phenylalanine, ammonialyase, and malondialdehvde activities were determined. During 0-96 h of inspection, phenylalanine and ammonialyase (PAL) activities increased by 64.2%, peroxidase (POD) activities increased by 41.2%, but the malondialdenvde (MDA) content decreased by 29.7% compared with the control. It seems that the low-concentration filtrate of Bipolaris maydis race T cultivation itself can be used as an elicitor to enhance the induced resistance. 展开更多
关键词 Bipolaris maydis race T filtration of cultivation PAL POD MDA induced resistance
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Role of CaCl_(2) in Cold Acclimation-Induced Freezing Resistance of Populus tomentosa Cuttings 被引量:2
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作者 林善枝 林元震 +2 位作者 张志毅 雍军 张谦 《Forestry Studies in China》 CAS 2002年第2期38-42,共5页
Populus tomentosa cuttings were treated with 1mmol·L -1 , 5mmol·L -1 , 10mmol·L -1 or 15mmol·L -1 of CaCl 2 for 1\|7 d, respectively, for studying the effects of different conc... Populus tomentosa cuttings were treated with 1mmol·L -1 , 5mmol·L -1 , 10mmol·L -1 or 15mmol·L -1 of CaCl 2 for 1\|7 d, respectively, for studying the effects of different concentrations of CaCl 2 on freezing resistance. Results indicated that 10?mmol·L -1 of CaCl 2 has greater effect than other concentrations on the enhancement of freezing resistance, and the optimum time of pretreatment was 5?d. In addition, cuttings used for cold acclimation at -3℃ were pretreated with or without 10?mmol·L -1 of CaCl 2, 3?mmol·L -1 of Ca 2+ chelator EGTA, 0 05?mmol·L -1 of CaM antagonist CPZ or 0 1?mmol·L -1 of Ca 2+ channel inhibitor LaCl 3 The changes in CaM and freezing resistance of all cuttings were investigated. The results showed that cold acclimation at -3℃ increased CaM content and decreased the minimum temperature for 100% survival. The CaCl 2 pretreatment enhanced the effect of cold acclimation and obviously increased CaM content and decreased the minimum temperature for 100% survival, but this effect was strongly inhibited by the EGTA, CPZ or LaCl 3 It is concluded that the effect of CaCl 2 on freezing resistance is associated with its concentration and time of pretreatment, Ca 2+ CaM may be involved in the induction of freezing resistance of the cuttings. 展开更多
关键词 Populus tomentosa cuttings cold acclimation CaCl 2 CAM freezing resistance
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Cold Acclimation-Induced Changes in Total Soluble Protein, RNA, DNA, RNase and Freezing Resistance in Populus tomentosa Cuttings 被引量:3
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作者 林善枝 张志毅 《Forestry Studies in China》 CAS 2002年第2期9-15,共7页
The changes in the contents of total soluble protein and RNA, the activity of RNase in leaves and branches of Populus tomentosa cuttings at various periods (viz: cold acclimation, deacclimation, chilling stress an... The changes in the contents of total soluble protein and RNA, the activity of RNase in leaves and branches of Populus tomentosa cuttings at various periods (viz: cold acclimation, deacclimation, chilling stress and the recovery after chilling stress), and the survival rate and the freezing resistance of cuttings during cold acclimation at -3℃ were investigated. Results showed that cold acclimation not only increased the contents of total soluble protein and RNA, the survival rates and the freezing resistance of cuttings, decreased the activity of RNase, but also reduced the declining degree of total soluble protein and RNA contents, and the increasing level of RNase caused by chilling stress as compared with the controls. In addition, cold acclimation augmented the increase in the level of total soluble protein and RNA, and facilitated the decrease of RNase during the recovery periods. Further analysis found that the DNA content of all treatments kept relative stability at various periods. The changes in total soluble protein, RNA and RNase were closely related to the freezing resistance of cuttings. It appears that the increase of RNA content caused by cold acclimation induced decrease of RNase activity may be involved in the accumulation of total soluble protein and the induction of freezing resistance of cuttings. 展开更多
关键词 Populus tomentosa cold acclimation freezing resistance total soluble protein nucleic acid
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Differential expression of breast cancer-resistance protein,lung resistance protein,and multidrug resistance protein 1 in retinas of streptozotocin-induced diabetic mice 被引量:1
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作者 Meng-Shuang Li Meng Xin +3 位作者 Chuan-Long Guo Gui-Ming Lin Jun Li Xiang-Gen Wu 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2017年第4期515-523,共9页
AIM:To investigate the altering expression profiles of efflux transporters such as breast cancer-resistance protein(BCRP),lung resistance protein(LRP),and multidrug resistance protein 1(MDR1) at the inner blood... AIM:To investigate the altering expression profiles of efflux transporters such as breast cancer-resistance protein(BCRP),lung resistance protein(LRP),and multidrug resistance protein 1(MDR1) at the inner blood-retinal barrier(BRB) during the development of early diabetic retinopathy(DR) and/or aging in mice.METHODS:Relative m RNA and protein expression profiles of these three efflux transporters in the retina during the development of early DR and/or aging in mice were examined.The differing expression profiles of Zonula occludens 1( ZO-1) and vascular endothelial growth factor-A( VEGFA) in the retina as well as the perfusion characterization of fluorescein isothiocyanate(FITC)-dextran and Evans blue were examined to evaluate the integrity of the inner BRB.RESULTS:There were significant alterations in these three efflux transporters' expression profiles in the m RNA and protein levels of the retina during the development of diabetes mellitus and/or aging.The development of early DR was confirmed by the expression profiles of ZO-1 and VEGFA in the retina as well as the compromised integrity of the inner BRB.CONCLUSION:The expression profiles of some efflux transporters such as BCRP,LRP,and MDR1 in mice retina during diabetic and/or aging conditions are tested,and the attenuated expression of BCRP,LRP,and MDR1 along with the breakdown of the inner BRB is found,which may be linked to the pathogenesis of early DR. 展开更多
关键词 efflux transporters blood-retinal barrier multidrug resistance protein 1 lung resistance protein breast cancer-resistance protein
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Role of visfatin in obesity-induced insulin resistance 被引量:8
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作者 Mona Mohamed Ibrahim Abdalla 《World Journal of Clinical Cases》 SCIE 2022年第30期10840-10851,共12页
The growing worldwide burden of insulin resistance(IR) emphasizes the importance of early identification for improved management.Obesity,particularly visceral obesity,has been a key contributing factor in the developm... The growing worldwide burden of insulin resistance(IR) emphasizes the importance of early identification for improved management.Obesity,particularly visceral obesity,has been a key contributing factor in the development of IR.The obesity-associated chronic inflammatory state contributes to the development of obesity-related comorbidities,including IR.Adipocytokines,which are released by adipose tissue,have been investigated as possible indicators of IR.Visfatin was one of the adipocytokines that attracted attention due to its insulinmimetic activity.It is released from a variety of sources,including visceral fat and macrophages,and it influences glucose metabolism and increases inflammation.The relationship between visfatin and IR in obesity is debatable.As a result,the purpose of this review was to better understand the role of visfatin in glucose homeostasis and to review the literature on the association between visfatin levels and IR,cardiovascular diseases,and renal diseases in obesity. 展开更多
关键词 Homeostatic model assessment for insulin resistance Insulin resistance OBESITY VISFATIN pre-B cell colony enhancing factor Nicotinamide phosphoribosyl-transferase enzyme Diabetes ADIPOCYTOKINES
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Effects of Traditional Chinese Medicinal Plants on Antiinsulin Resistance Bioactivity of DXMS-Induced Insulin Resistant HepG2 Cells 被引量:4
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作者 Jun-Zeng Ma Li-Xin Yang +7 位作者 Xiao-Ling Shen Ji-Huan Qin Li-Lan Deng Selena Ahmed Hong-Xi Xu Da-Yuan Xue Jiang-Xia Ye Gang Xu 《Natural Products and Bioprospecting》 CAS 2014年第4期197-206,共10页
Medicinal plants have a long history of use in China to treat diabetic symptoms.Ancient Chinese medical manuscripts and ethnobotanical surveys document plant remedies that continue to be actively used in China for the... Medicinal plants have a long history of use in China to treat diabetic symptoms.Ancient Chinese medical manuscripts and ethnobotanical surveys document plant remedies that continue to be actively used in China for the treatment of diabetic symptoms.Based on a systematic ancient Chinese medical manuscripts review in combination with ethnobotanical survey,16 medicinal plants for the traditional treatment of diabetic symptoms were identified for the evaluation of anti-insulin resistance bioactivity.The biological activity of 16 medicinal plants was tested on dexamethasone(DXMS)-induced insulin resistant HepG2 cells.The result shows that 11 of the 16 medicinal plants enhanced glucose uptake of DXMS-induced insulin resistant HepG2 cells,thereby demonstrating their ability to increase insulin sensitivity,other five medicinal plants including Astragalus membranaceus were found ineffective.The study shows that ancient Chinese medical manuscripts and ethnobotanical surveys on plants for the prevention and treatment of diabetic symptoms provide a promising knowledge base for drug discovery to mitigate the global diabetes epidemic. 展开更多
关键词 Traditional medicinal plants Diabetes Anti-insulin resistance bioactivity DXMS-induced insulin resistant HepG2 cells
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