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13篇 您的检索式:作者名="Meixiang Sun"
    题名 作者 年代 出处 被引量
1Effects of Continuous Cropping of Panax notoginseng on the Properties of Rhizosphere Soil显示文摘[Objective] This experiment aimed to investigate the effects of continuous cropping of Panax notoginseng on the properties of rhizosphere soil. [Method] A total of 12 rhizospheres oil samples were collected in the fields continuously cropped with P. notoginseng for different years and the soil properties including pH value, contents of available N, available K, available P,total N, total K, total P and organic matter were determined. [Result] With the increase in the number of years of continuous cropping, seven soli indices: soil pH value, organic matter content, total N, total P, total K, available P and available K gradually increased, while available N showed a gradual downward trend. The contents of organic matter content, total N, total P, total K,available P, available K and available N after three years of continuous cropping were increased by 74.93%, 65.85%, 123.82%,18.78%, 341.67%, 120.16% and-32.16%, respectively, indicating that continuous cropping of P. notoginseng resulted in nutrient enrichment in rhizosphere soils. The pH value and available N in IBC(soil inside the border check) and UBC(soil under the border check) were higher than that in BBC(soil beside the border check), suggesting that the soil was gradually alkalized due to the continuous cropping of P. notoginseng. [Conclusion] These results suggest that pH change and nutrient imbalance may be the obstacles to the continuous cropping of P. notoginseng.Kaiming LI Meixiang LIU Qianhui SUN Zilong ZHANG 2017Agricultural Science & Technology2017,18,4:4
2Hypoxia induces T-cell apoptosis by inhibiting chemokine C receptor 7 expression:the role of adenosine receptor A2显示文摘Hypoxia is a major characteristic of the tumor microenvironment,and its effects on immune cells are proposed to be important factors for the process of tumor immune escape.It has been reported that hypoxia affects the function of dendritic cells and the antitumor function of T cells.Here we discuss the effects of hypoxia on T-cell survival.Our results showed that hypoxia induced apoptosis of T cells.Adenosine and adenosine receptors(AR)are important to the hypoxia-related signaling pathway.Using AR agonists and antagonists,we demonstrated that hypoxia-induced apoptosis of T cells was mediated by A^(2a)and A^(2b)receptors.Furthermore,we are the first,to our knowledge,to report that hypoxia significantly inhibited the expression of chemokine C receptor 7(CCR7)of T cells via the A^(2)R signal pathway,perhaps representing a mechanism of hypoxia-induced apoptosis of T cells.Collectively,our research demonstrated that hypoxia induces T-cell apoptosis by the A^(2)R signaling pathway partly by suppressing CCR7.Blocking the A^(2)R signaling pathway and/or activation of CCR7 can increase the anti-apoptosis function of T cells and may become a new strategy to improve antitumor potential.Jintang Sun Yan Zhang Meixiang Yang Yun Zhang Qi Xie Zewu Li Zhaogang Dong Yongmei Yang Biping Deng Alei Feng Weixu Hu Haiting Mao Xun Qu 2010Cellular & Molecular Immunology2010,7,1:3
3Phosphorylation of a wheat aquaporin at two sites enhances both plant growth and defense显示文摘Eukaryotic aquaporins share the characteristic of functional multiplicity in transporting distinct substrates and regulating various processes,but the underlying molecular basis for this is largely unknown.Here,we report that the wheat(Triticum aestivum)aquaporin TaPIP2;10 undergoes phosphorylation to promote photosynthesis and productivity and to confer innate immunity against pathogens and a generalist aphid pest.In response to elevated atmospheric CO_(2)concentrations,TaPIP2;10 is phosphorylated at the serine residue S280 and thereafter transports CO_(2)into wheat cells,resulting in enhanced photosynthesis and increased grain yield.In response to apoplastic H_(2)O_(2) induced by pathogen or insect attacks,TaPIP2;10 is phosphorylated at S121 and this phosphorylated form transports H_(2)O_(2) into the cytoplasm,where H_(2)O_(2)intensifies host defenses,restricting further attacks.Wheat resistance and grain yield could be simultaneously increased by TaPIP2;10 overexpression or by expressing a TaPIP2;10 phosphomimic with aspartic acid substitutions at S121 and S280,thereby improving both crop productivity and immunity.Kai Lu Xiaochen Chen Xiaohui Yao Yuyan An Xuan Wang Lina Qin Xiaoxu Li Zuodong Wang Shuo Liu Zhimao Sun Liyuan Zhang Lei Chen Baoyan Li Baoyou Liu Weiyang Wang Xinhua Ding Yonghua Yang Meixiang Zhang Shenshen Zou Hansong Dong 2022Molecular Plant2022,15,11:2
4Osteopontin splice variants expressed by breast tumors regulate monocyte activation via MCP-1 and TGF-β1显示文摘Osteopontin (OPN ) ,多功能的 glycoprotein,有在 vitro 在肿瘤有不同角色的三个抄本。OPN 抄本是否在 vivo 在肿瘤进程有不同函数,是不清楚的。有免疫力的导出房间的 OPN 能支持肿瘤形成,这被报导了。我们建议导出肿瘤的 OPN 可以便于的一个假设由影响有免疫力的房间区别和功能的肿瘤免疫者逃跑。在这研究,我们构造了 OPN 抄本和 transfected 的 lentiviral 表示向量他们进 MCF-7 房间线。有 OPN 抄本的 MCF-7 房间 transfected 被注入裸体老鼠的腋窝,并且肿瘤生长被监视。结果证明所有 OPN 抄本支持了本地肿瘤形成,而是那在抄本之中没有重要差别。我们也调查了 coculturing 单核白血球肿瘤房间与肿瘤上层清液在单核白血球区别上表示的 OPN 的效果。我们与 OPN 相比发现 OPN-c upregulated CD163 层次 --and OPN-b;然而,任何一个都没抄本影响 HLA 医生和 CD206 层次。所有 OPN 抄本显著地禁止了 TNF-α并且由单核白血球提高了 IL-10 生产。而且,我们发现了 OPN 抄本的 overexpression 显著地 upregulated TGF-β 1 并且由肿瘤房间的 MCP-1 生产。用抵销抗体和 recombinant cytokines,我们发现由肿瘤房间的 OPN overexpressed 调整 TNF-α 的生产;并且由单核白血球的 IL-10 部分经由 MCP-1 和 TGF-β 1 分别地。一起,我们的结果证明 OPN 抄本没在 vivo 在乳癌形成有不同角色。我们也证明 OPN 经由 TGF-β 调整单核白血球的其他的激活; 1 并且 MCP-1,它可以为肿瘤代表另外的机制免疫者逃跑。Jintang Sun Alei Feng Songyu Chen Yun Zhang Qi Xie Meixiang Yang Qianqian Shao Jia Liu Qifeng Yang Beihua Kong Xun Qu 2013Cellular & Molecular Immunology2013,10,2:2
5Review on the characteristics of liver-pacifying medicinal in relation to the treatment of stroke: from scientific evidence to traditional medical theory显示文摘OBJECTIVE: To analyze the characteristics of liver pacifying medicinal in the treatment of brain disease to provide scientific evidence in clinical usage on stroke.METHODS: MEDLINE/Pub Med, Google Scholar,and China National Knowledge Infrastructure Database were used as the literature sources. The Scientific name, Latin pharmaceutical name,Chinese name of 7 kinds of liver pacifying medicinal including Gouteng(Ramulus Uncariae Rhynchophyllae cum Uncis), Tianma(Rhizoma Gastrodiae), Juemingzi(Semen Cassiae Obtusifoliae),Quanxie(Scorpio), Wugong(Scolopendra), Jiangcan(Bombyx Batryticatus), and Dilong(Pheretima Aspergillum) were used as the keywords to search the databases for relevant publications up to July2016. Their major compounds were also used as the keywords. The papers were selected based on the pharmacological activities and mechanisms of action related to brain diseases and subsequently,were analyzed and reviewed. We first described the origin, efficacy, and clinical indications of selected medicines, then brain disease specific activities focusing on stroke after the description of the general pharmacological activities.RESULTS: On the basis of the literature of scientific studies and clinical use in traditional medicine, we found and discussed the characteristics of liver pacifying medicinal in stroke treatment. First, liver-pacifying medicinal,or their components, might pass through the blood-brain barrier and act directly on neurons or on the neural network to provide protective effects against brain disease. Second, although it could be used throughout the disease duration,treatment of stroke might be more effective from the subacute up to the convalescent phase than the acute phase.CONCLUSION: We can suggest that live pacifying medicinal has beneficial pharmacological activities directly or indirectly on neurons in brain disease and is useful for the treatment of stroke from subacute to convalescent phase.Kyungjin Lee Hyejin Joo Meixiang Sun Minwoo Kim Bumjung Kim Beom-Joon Lee Jae-Heung Cho Jae-Young Jung Jae-Woo Park Youngmin Bu 2018Journal of Traditional Chinese Medicine2018,38,1:2
6Seroepidemiology and genetic characterization of hepatitis E virus in the northeast of china显示文摘Yuanhua Yu Jingwei Sun Meixiang Liu Liliang Xia Chenyan Zhao Tim J Harrison Youchun Wang 2009Infection Genetics and Evolution2009,,4:1
7Breast cancer; operation period of personalized psychological care显示文摘Sun Mengqing Wang Meixiang 2011Nursing Research2011,5,3:1
8Experimental investigation of crossflow characteristics in multi-jets system at small nozzle-to-plate spacing显示文摘To further extend knowledge about the detailed knowledge on the crossflow characteristics in a multi-jets system under a confined space,particle image velocimetry (PIV) was employed to investigate the flow structures together with the distributions of the mean velocity components for Reynolds numbers (Re) ranging from 6 213 to 13 418,nozzle-to-plate spacing (H/D) varying from 0. 20 to1. 25,respectively. Results show that the crossflow configuration is significantly different from those of large nozzle-to-plate spacing. In addition,a turning point H/D=0.50 is revealed in the profile of the normalized maximum radial velocity which is associated with the heat transfer distribution on the impingement plate.ZHU Keqian SUN Tao YU Pingping LI Meixiang YUAN Ningyi DING Jianning 2019排灌机械工程学报2019,37,2:1
9槐耳颗粒单药及联合rh-Endostatin、DDP抗肿瘤作用的研究(英文)显示文摘Objective: The aim of our study was to explore the inhibition and apoptosis-inducing effect of the combination of Huaier aqueous extract with recombinant human Endostatin and DDP in human lung adenocarcinoma A549 cells. We also investigated the reversal effect of Huaier aqueous extract in reversing cisplatin resistance in human lung adenocarcinoma A549/DDP cells. Methods: We treated A549 cells with Huaier aqueous extract and the combination of Huaier aqueous extract and DDP or rh-Endostatin for 24 h, 36 h and 48 h. And then we calculated the inhibition rate through MTT approach and detected the apoptosis rate by flow cytometry. We also treated A549 and A549/DDP cells with DDP, Huaier aqueous extract, DDP and Huaier aqueous extract for 72 h, respectively. Results: Huaier aqueous extract can inhibit the growth of A549 cells and the inhibition rate improved with the increase of the concentration. The inhibition rate of the combination of rh-Endostatin and 4 mg/mL of Huaier aqueous extract in three time points and the combination of rh-Endostatin and 2 mg/mL of Huaier aqueous extract in the time point of 48 h on the growth of A549 cells all improved(P < 0.005). The inhibition rate of the combination of DDP and Huaier aqueous extract with the concentration of 2 mg/mL or 4 mg/mL on the growth of A549 cells all improved(P < 0.005). The combination of Huaier aqueous extract and DDP and the combination of Huaier aqueous extract with rh-Endostatin and DDP can improve the inhibition on the growth of A549 cells(P < 0.005). Conclusion: Huaier aqueous extract has the inhibition and apoptosis-inducing effects on the A549 cells. And the combination of Huaier aqueous extract and rh-Endostatin or DDP has the synergistic effects on the inhibition of A549 cells. The combination of Huaier aqueous extract with rh-Endostatin and DDP has the synergistic effects on the inhibition of A549 cells. Huaier aqueous extract can reverse the cisplatin resistance in human lung adenocarcinoma A549/DDP cells.Yuxuan Che Meixiang Zhou Peng Zhan Tiantian Zou Xiuhua Sun 2014The Chinese-German Journal of Clinical Oncology2014,13,8:1
10Relative Contributions of Spatial and Environmental Processes and Biotic Interactions in a Soil Collembolan Community显示文摘Understanding the underlying processes of how communities are structured remains a central question in community ecology. However, the mechanisms of the soil animal community are still unclear, especially for communities on a small scale. To evaluate the relative roles of biotic interactions and environmental and spatial processes in a soil collembolan community, a field experiment was carried out on a small scale(50 m) in the farmland ecosystem of the Sanjiang Plain, Northeast China. In August and October, 2011, we took 100 samples each month in a 50 m × 50 m plot using a spatially delimited sampling design. Variation partitioning was used to quantify the relative contributions of the spatial and environmental variables. A null model was selected to test for the non-randomness pattern of species co-occurrence and body size in assemblages of collembolans and to test whether the pattern observed was the result of environmental or biotic processes that structured the community on a small scale. The results showed that large variance was accounted for by spatial variables(18.99% in August and 21.83% in October, both were significant). There were relatively lower effects of environmental variation(3.56% in August and 1.45% in October, neither was significant), while the soil water content, soil p H and soybean height explained a significant portion of the variance that was observed in the spatial pattern of the collembolan community. Furthermore, the null model revealed more co-occurrence than expected by chance, suggesting that collembolan communities had a non-random co-occurrence pattern in both August and October. Additionally, environmental niche overlap and the body size ratio of co-occurrence showed that interspecific competition was not influential in collembolan community structuring. Considering all of the results together, the contributions of spatial and environmental processes were stronger than biotic interactions in the small-scale structuring of a soil collembolan community.SHA Di GAO Meixiang SUN Xin WU Donghui ZHANG Xueping 2015Chinese Geographical Science2015,25,5:1
11A New Method for Studying the Distribution of Induced Defects in Potential Wells in a-Si : H/a-SiN_(x) : H Multilayer显示文摘The induced defects and their distribution in a-Si:H/a-SiN_(x):H multilayers can be determined by use of electromagnetic technique.It is found that the distributions of the induced defects in the interface regions on both sides of the a-Si:H sublayer are asymmetric and related to the growth direction of the film;a large number of induced defects exist in the interface region away from substrate,but few or no in the interface region near substrate.WANG Zhichao GUO Shengkang CAO Guorong CHEN Cai SUN Meixiang 1994Chinese Physics Letters1994,11,9:0
12Skin Retention Determination and Clinical Efficacy Evaluation of a Novel High Oil-Contained Hpr Transfersome Permeable Formulation显示文摘In order to increase the skin retention of HPR(Hydroxypinacone Retinoate),a novel high oil-contained HPR transfersome WL-HPR1130 was prepared.Conventional essence containing HPR was used as the control group,WL-HPR1130 essence was used as the experimental group,the skin retention of HPR were determined respectively.The anti-wrinkle efficacy of WL-HPR1130 essence was evaluated at the same time.The retention of HPR was 11.40μg/cm2 in the experimental group and 1.41μg/cm2 in the control group,which was 8.08 times higher than the control group.The wrinkles and fine lines were significantly reduced and smoothed after 2 and 4 weeks by experimental group sample.The average length,width and depth of wrinkles were decreased by 14.26%,18.31%,7.17%after 2 weeks,and were decreased by 29.39%,38.25%,8.60%after 4 weeks.The average length,width and depth of fine lines were decreased by 22.35%,12.60%,8.00%after 2 weeks,and were decreased by 27.10%,20.24%and 15.90%after 4 weeks,which has a significant visual changes.WLHPR1130,a novel high oil-contained HPR transfersome formulation,can significantly increase the retention of HPR in the skin.And the WL-HPR1130 essence have remarkable anti-wrinkle and smooth fine lines effects.Wang Jiaqi Ma Chaolong Tian Meixiang Sun Changlei Gong Jinkang 2022China Detergent & Cosmetics2022,7,4:0
13MYB44 regulates PTI by promoting the expression of EIN2 and MPK3/6 in Arabidopsis显示文摘The plant signaling pathway that regulates pathogen-associated molecular pattern(PAMP)-triggered immunity(PTI)involves mitogen-activated protein kinase(MAPK)cascades that comprise sequential activation of several protein kinases and the ensuing phosphorylation of MAPKs,which activate transcription factors(TFs)to promote downstream defense responses.To identify plant TFs that regulate MAPKs,we investigated TF-defective mutants of Arabidopsis thaliana and identified MYB44 as an essential constituent of the PTI pathway.MYB44 confers resistance against the bacterial pathogen Pseudomonas syringae by cooperating with MPK3 and MPK6.Under PAMP treatment,MYB44 binds to the promoters of MPK3 and MPK6 to activate their expression,leading to phosphorylation of MPK3 and MPK6 proteins.In turn,phosphorylated MPK3 and MPK6 phosphorylate MYB44 in a functionally redundant manner,thus enabling MYB44 to activate MPK3 and MPK6 expression and further activate downstream defense responses.Activation of defense responses has also been attributed to activation of EIN2 transcription by MYB44,which has previously been shown to affect PAMP recognition and PTI development.AtMYB44 thus functions as an integral component of the PTI pathway by connecting transcriptional and posttranscriptional regulation of the MPK3/6 cascade.Zuodong Wang Xiaoxu Li Xiaohui Yao Jinbiao Ma Kai Lu Yuyan An Zhimao Sun Qian Wang Miao Zhou Lina Qin Liyuan Zhang Shenshen Zou Lei Chen Congfeng Song Hansong Dong Meixiang Zhang Xiaochen Chen 2023Plant Communications2023,4,6:0
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