维普中文期刊产品整合服务
53篇 您的检索式:作者名="DING Dandan"
    题名 作者 年代 出处 被引量
1Effects of Chinese herbs in children with Henoch-Schonlein purpura nephritis:a randomized controlled trial显示文摘OBJECTIVE:To research the curative effect of Chinese herbs for clearing away heat,promoting diuresis,nourishing the kidney,and consolidating essence in children with Henoch-Schonlein purpura nephritis(HSPN)with internal accumulation of damp-toxin using randomized controlled observations on large samples.To seek the mechanism of the therapy and its scope of indications.METHODS:Overall,186 children with HSPN were randomly divided into two groups:treatment group(n=126)treated with Chinese herbs for clearing heat and promoting diuresis and a control group(n=60)treated with Western Medicine.The treatment was carried out for three courses of 4weeks each.We recorded changes in patient urine routines,24 h urinary protein,blood-coagulating series,immunoglobulin and T-cell subgroups,and improvements in main symptoms.We evaluated the alleviation of clinical symptoms and the improvement of proteinuria,hematuria,and other lab-oratory test results.Finally,we analyzed the patient population suitable for this therapy according to the relationship between the grouping of patient body weight and curative effect.RESULTS:Damp-heat syndrome improved in the treatment group,with a significant difference in total effective rate after a 4-week treatment(χ2=13.5220,P=0.0002)and in curative rate after a12-week treatment(χ2=6.3410,P=0.0118),compared to those in the control group.The curative effect in the treatment group was greater than that in the control group but there was no statistical difference between the two groups.The curative effect after a 4-week treatment of patients in the treatment group weighing 30 kg or less based on Traditional Chinese Medicine(TCM)signs and urinary protein was significantly greater than that in the control group.However,there was no statistical difference in the curative effect on urinary red cells and various indexes after a 12-week treatment between the two groups.CONCLUSION:Therapy for clearing away heat,promoting diuresis,nourishing the kidney,and consolidating essence using TCM is effective in children with HSPN from internal accumulation of damp-toxin.The therapy is especially suitable for patients weighing 30 kg or less.The curative effect may be related to the improvement of immune function and blood-coagulation.Dandan Ding Huimin Yan Xiaofang Zhen 2014Journal of Traditional Chinese Medicine2014,34,1:12
2Defined tumor antigen-specific T cells potentiate personalized TCR-T cell therapy and prediction of immunotherapy response显示文摘Personalized immunotherapy targeting tumor-specific antigens(TSAs)could generate efficient and safe antitumor immune response without damaging normal tissues.Although neoantigen vaccines have shown therapeutic effect in clinic trials,precise prediction of neoantigens from tumor mutations is still challenging.The host antitumor immune response selects and activates T cells recognizing tumor antigens.Hence,T cells engineered with T-cell receptors(TCRs)from these naturally occurring tumor antigen-specific T(Tas)cells in a patient will target personal TSAs in his/her tumor.To establish such a personalized TCR-T cell therapy,we comprehensively characterized T cells in tumor and its adjacent tissues by single-cell mRNA sequencing(scRNA-seq),TCR sequencing(TCR-seq)and in vitro neoantigen stimulation.Compared to bystander T cells circulating among tissues,Tas cells were characterized by tumor enrichment,tumor-specific clonal expansion and neoantigen specificity.We found that CXCL13 is a unique marker for both CD4^(+)and CD8^(+)Tas cells.Importantly,TCR-T cells expressing TCRs from Tas cells showed significant therapeutic effects on autologous patient-derived xenograft(PDX)tumors.Intratumoral Tas cell levels measured by CXCL13 expression precisely predicted the response to immune checkpoint blockade,indicating a critical role of Tas cells in the antitumor immunity.We further identified CD200 and ENTPD1 as surface markers for CD4^(^(+))and CD8^(^(+))Tas cells respectively,which enabled the isolation of Tas cells from tumor by Fluorescence Activating Cell Sorter(FACS)sorting.Overall,our results suggest that TCR-T cells engineered with Tas TCRs are a promising agent for personalized immunotherapy,and intratumoral Tas cell levels determine the response to immunotherapy.Jingjing He Xinxin Xiong Han Yang Dandan Li Xuefei Liu Shuo Li Shuangye Liao Siyu Chen Xizhi Wen Kuai Yu Lingyi Fu Xingjun Dong Kaiyu Zhu Xiaojun Xia Tiebang Kang Chaochao Bian Xiang Li Haiping Liu Peirong Ding Xiaoshi Zhang Zhenjiang Liu Wende Li Zhixiang Zuo Penghui Zhou 2022Cell Research2022,32,6:10
3Allele-aware chromosome-level genome assembly of Artemisia annua reveals the correlation between ADS expansion and artemisinin yield显示文摘Artemisia annua is the major natural source of artemisinin,an anti-malarial medicine commonly used worldwide.Here,we present chromosome-level haploid maps for two A.annua strains with different artemisinin contents to explore the relationships between genomic organization and artemisinin production.High-fidelity sequencing,optical mapping,and chromatin conformation capture sequencing were used to assemble the heterogeneous and repetitive genome and resolve the haplotypes of A.annua.Approximately 5o,ooo genes were annotated for each haplotype genome,and a triplication event that occurred approximately 58.12million years ago was examined for the first time in this species.A total of 3,903,467-5,193,414 variants(SNPs,indels,and structural variants)were identified in the 1.5-Gb genome during pairwise comparison between haplotypes,consistent with the high heterozygosity of this species.Genomic analyses revealed a correlation between artemisinin concents and the copy number of amorpha-4,11-dienes ynthasegenes.This correlation was further confirmed by resequencing of 36A.annua samples with varied artemisinin contents.Circular consensus sequencing of transcripts facilitated the detection of paralog expression.Collectively,our study provides chromosome-level allele-aware genome assemblies for two A.annua strains and new insights into the biosynthesis of artemisinin and its regulation,which will contribute to conquering malaria worldwide.Baosheng Liao Xiaofeng Shen Li Xiang Shuai Guo Shiyu Chen Ying Meng Yu Liang Dandan Ding Junqi Bai Dong Zhang Tomasz Czechowski Yi Li Hui Yao Tingyu Mai Caroline Howard Chao Sun Haitao Liu Jiushi Liu Jin Pei Jihai Gao Jigang Wang Xiaohui Qiu Zhihai Huang Hongyi Li Ling Yuan Jianhe Wei lan Graham Jiang Xu Boli Zhang Shilin Chen 2022Molecular Plant2022,15,8:9
4Facile synthesis of graphene via reduction of graphene oxide by artemisinin in ethanol显示文摘The preparation of reduced graphene oxide(RGO)by chemical reduction of graphene oxide(GO)usually involves highly toxic reducing agents which are harmful to the environment and human health.In this paper,a mediated facile and relative green approach for the preparation of RGO in ethanol using artemisinin as a reducing agent is reported for the first time.The morphology and de-oxidation efficiency of the obtained RGO were characterized by transmission electron microscope(TEM),atomic force microscope(AFM),and X-ray photoelectron spectroscopy(XPS).The results showed that artemisinin can effectively reduce GO into few-layered RGO with a high carbon to oxygen ratio(11.7).The mechanism for elimination of oxygen-containing functional groups decorated on GO nanosheets by artemisinin was proposed.The important features of relatively environmentally friendly and facile operation procedures endow this approach with great promise in the mass production of RGO and various graphene-based materials,especially for biomaterials.Dandan Hou Qinfu Liu Xianshuai Wang Ying Quan Zhichuan Qiao Li Yu Shuli Ding 2018Journal of Materiomics2018,4,3:6
5Development of the triazole-fused pyrimidine derivatives as highly potent and reversible inhibitors of histone lysine specific demethylase1(LSD1/KDM1A)显示文摘Histone lysine specific demethylase 1(LSD1) has been recognized as an important modulator in post-translational process in epigenetics. Dysregulation of LSD1 has been implicated in the development of various cancers. Herein, we report the discovery of the hit compound 8 a(IC50=3.93 μmol/L) and further medicinal chemistry efforts, leading to the generation of compound 15 u(IC50=49 nmol/L, and Ki= 16 nmol/L), which inhibited LSD1 reversibly and competitively with H3 K4 me2, and was selective to LSD1 over MAO-A/B. Docking studies were performed to rationalize the potency ofcompound 15 u. Compound 15 u also showed strong antiproliferative activity against four leukemia cell lines(OCL-AML3, K562, THP-1 and U937) as well as the lymphoma cell line Raji with the IC50 values of 1.79, 1.30, 0.45, 1.22 and 1.40 μmol/L, respectively. In THP-1 cell line, 15 u significantly inhibited colony formation and caused remarkable morphological changes. Compound 15 u induced expression of CD86 and CD11 b in THP-1 cells, confirming its cellular activity and ability of inducing differentiation.The findings further indicate that targeting LSD1 is a promising strategy for AML treatment, the triazolefused pyrimidine derivatives are new scaffolds for the development of LSD1/KDM1 A inhibitors.Zhonghua Li Lina Ding Zhongrui Li Zhizheng Wang Fengzhi Suo Dandan Shen Taoqian Zhao Xudong Sun Junwei Wang Ying Liu Liying Ma Bing Zhao Pengfei Geng Bin Yu Yichao Zheng Hongmin Liu 2019Acta Pharmaceutica Sinica B2019,9,4:6
6Epidemiology of urticaria in China:a population-based study显示文摘Background:Urticaria is a common skin disease characterized by episodes of wheals,and it has a negative effect on patients’quality of life.Large-scale population-based epidemiological studies of urticaria are scarce in China.The aim of this survey was to determine the prevalence,clinical forms,and risk factors of urticaria in the Chinese population.Methods:This survey was conducted in 35 cities from 31 provinces,autonomous regions,and municipalities of China.Two to three communities in each city were selected in this investigation.Participants completed questionnaires and received dermatological examinations.We analyzed the prevalence,clinical forms,and risk factors of urticaria.Results:In total,44,875 questionnaires were distributed and 41,041 valid questionnaires were collected(17,563 male and 23,478 female participants).The lifetime prevalence of urticaria was 7.30%,with 8.26%in female and 6.34%in male individuals(P<0.05).The point prevalence of urticaria was 0.75%,with 0.79%in female and 0.71%in male individuals(P<0.05).Concomitant angioedema was found in 6.16%of patients.Adults had a higher prevalence of urticaria than adolescents and children.Living in urban areas,exposure to pollutants,an anxious or depressed psychological status,a personal and family history of allergy,thyroid diseases,and Helicobacter pylori infection were associated with a higher prevalence of urticaria.Smoking was correlated with a reduced risk of urticaria.Conclusion:This study demonstrated that the lifetime prevalence of urticaria was 7.30%and the point prevalence was 0.75%in the Chinese population;women had a higher prevalence of urticaria than men.Various factors were correlated with urticaria.Jiaqing Li Dandan Mao Shuoshuo Liu Ping Liu Jing Tian Chenhong Xue Xiaojing Liu Ruiqun Qi Bingxue Bai Jianjun Nie Siqi Ye Yu Wang Yuye Li Qing Sun Juan Tao Shuping Guo Hong Fang Jianqin Wang Qiri Mu Quanzhong Liu Yan Ding Jianzhong Zhang 2022Chinese Medical Journal2022,,11:6
7Energy-level dependent H_2_O_2 production on metal-free,carbon-content tunable carbon nitride photocatalysts显示文摘Light-driven production of H_2O_2 from water and molecular oxygen could be a promising way for obtaining both solar fuels and fundamental chemicals. During that process, the H_2O_2 yield is strongly dependent on the reaction pathway associated with two-electron reduction of dioxygen by the photo-generated electrons. Herein, we synthesized a series of metal-free, carbon-content tunable carbon nitride photocatalysts(named C_3N_4-Carbon) by a facile hydrothermal reaction and subsequent thermal treatment at appropriate temperatures. The energy levels of the C_3N_4-Carbon catalysts vary with the carbon doping level, which is conveniently tuned by changing the initial glucose concentration during the hydrothermal reaction. The surface carbon species evolve with the carbon content and the nitrogen atoms in the structure of carbon nitride are partially substituted by foreign carbon atoms based on XPS measurements. The optimal catalyst leads to the highest H_2O_2 yield of 1271 μmol L^(-1) in an acidic aqueous solution(pH 3) after a reaction period of 4 h, twice higher than the pristine C_3N_4. In addition, the largest formation rate constant and the smallest decomposition rate constant of H_2O_2 are obtained on the optimal one according to the kinetics analyses. The decomposition tests of H_2O_2 indicate that the formation rate could be a dominant factor impacting the H_2O_2 yield. The conduction band position of the optimal catalyst is positively shifted to 0.06 V versus RHE, which is more favorable to the reduction of dioxygen to H_2O_2(O2/H_2O_2 at 0.69 V versus RHE). The positive shift of valence band also improves hole collection and leads to enhanced formation of H_2O_2.Ruirui Wang Xin Zhang Fan Li Ding Cao Min Pu Dandan Han Junjiao Yang Xu Xiang 2018Journal of Energy Chemistry2018,27,2:4
8Fabrication and Characterization of One Interpenetrating Network Hydrogel Based on Sodium Alginate and Polyvinyl Alcohol显示文摘One interpenetrating network hydrogel based on sodium alginate (SA) and polyvinyl alcohol (PVA) was synthesized by combining the raw materials of PVA and SA with the double physical crosslinking methods of freezing thawing and Ca2+ crosslinking. The PVA-SA composite hydrogel have been characterized by scanning electron microscopy for surface morphology, infrared spectroscopy for investigating the chemical interactions between PVA and SA, X-ray diffraction for studying the PVA-SA composite structure property and thermal gravimetric for understanding the PVA-SA composite thermal stability. The swelling behavior and the degradation rate of the PVA-SA composite hydrogel were studied in simulated gastrointestinal fluid. Using bovine serum albumin (BSA) and salicylic acid as the model drugs, the release behavior of the PVASA composite hydrogel on macromolecular protein drugs and small molecule drug were evaluated. The results showed that the water absorption and degradation ability of the PVA-SA composite hydrogel was much better compared to the pure SA hydrogel or pure PVA hydrogel. The hydrogel exhibited remarkable pH sensitivity and the network was stable in the simulated intestinal fluid for more than 24 h. With the advantages such as mild preparation conditions, simple method, less reagent and none severe reaction, the PVA-SA composite hydrogel is expected to be a new prosperous facile sustained drug delivery carrier.张尚文 HAN Dandan DING Zongxian WANG Xin ZHAO Dan 胡燕 XIAO Xincai 2019Journal of Wuhan University of Technology(Materials Science)2019,34,3:3
9PMN-MDSCs modulated by CCL20 from cancer cells promoted breast cancer cell stemness through CXCL2-CXCR2 pathway显示文摘Our previous studies have showed that C-C motif chemokine ligand 20(CCL20)advanced tumor progression and enhanced the chemoresistance of cancer cells by positively regulating breast cancer stem cell(BCSC)self-renewal.However,it is unclear whether CCL20 affects breast cancer progression by remodeling the tumor microenvironment(TME).Here,we observed that polymorphonuclear myeloid-derived suppressor cells(PMN-MDSCs)were remarkably enriched in TME of CCL20-overexpressing cancer cell orthotopic allograft tumors.Mechanistically,CCL20 activated the differentiation of granulocyte-monocyte progenitors(GMPs)via its receptor C-C motif chemokine receptor 6(CCR6)leading to the PMN-MDSC expansion.PMN-MDSCs from CCL20-overexpressing cell orthotopic allograft tumors(CCL20-modulated PMN-MDSCs)secreted amounts of C-X-C motif chemokine ligand 2(CXCL2)and increased ALDH+BCSCs via activating CXCR2/NOTCH1/HEY1 signaling pathway.Furthermore,C-X-C motif chemokine receptor 2(CXCR2)antagonist SB225002 enhanced the docetaxel(DTX)effects on tumor growth by decreasing BCSCs in CCL20high-expressing tumors.These findings elucidated how CCL20 modulated the TME to promote cancer development,indicating a new therapeutic strategy by interfering with the interaction between PMN-MDSCs and BCSCs in breast cancer,especially in CCL20high-expressing breast cancer.Rui Zhang Mengxue Dong Juchuanli Tu Fengkai Li Qiaodan Deng Jiahui Xu Xueyan He Jiajun Ding Jie Xia Dandan Sheng Zhaoxia Chang Wei Ma Haonan Dong Yi Zhang Lixing Zhang Lu Zhang Suling Liu 2023Signal Transduction and Targeted Therapy2023,8,4:2
10Sensing carboxylesterase 1 in living systems by a practical and isoformspecific fluorescent probe显示文摘Carboxylesterase 1(CES1), one of the most abundant serine hydrolases in mammals, has drawn much attentions in recent years, owing to this enzyme involves in many physiological processes via hydrolysis of both endogenous esters and xenobiotic esters. Herein, to real-time monitor the activities of CES1 in various biological systems, a practical and iso form-specific fluorescent probe was developed on the basis of the substrate preference of CES1, as well as the structural and optical properties of BODIPY dyes. After screening of a panel of BODIPY ester derivatives, probe 1 displayed the best combination of specificity,sensitivity, enzymatic kinetics and applicability for monitoring CES1 activities in real samples. This probe was successfully used to detect CESl activities in several biological systems including tissue preparations,living cells, tissue slices and zebrafish. Furthermore, the biomedical applications of probe 1 for screening of CES1 inhibitors were also demonstrated using tissue preparations or living cells as enzyme sources. In summary, a practical and broadly applicable tool for real-time monitoring CES1 in biological systems was developed and well-characterized, which held great promise for further investigations on CES1-associated drug discovery, clinical practice and fundamental research.Lele Ding Zhenhao Tian Jie Hou Tongyi Dou Qiang Jin Dandan Wang Liwei Zou Yadi Zhu Yunqing Song Jingnan Cui Guangbo Ge 2019Chinese Chemical Letters2019,30,3:2
11Real-Time H.265/HEVC Intra Encoding with a Configurable Architecture on FPGA Platform显示文摘This paper proposes a flexible design scheme for H.265/HEVC encoding based on FPGA, which allows an easy incorporation of a variety of algorithms applied to different scenarios. In particular, we present an H.265/HEVC intra encoder as an instantiation of our proposed scheme. The key idea is to develop an encoder system by configuring basic Processing elements(PEs) of fundamental algorithms. Our intra encoder using the flexible framework is structured with fourstage CTU based pipeline. Pixel-level PEs are designed to unify the intra prediction of 35 modes and a multiscale compatible transform array is proposed to process variable size transform. 32 PEs are paralleled for intra mode decision to support 35 combinations of modes and partitions. In the reconstruction stage, 16 PEs are paralleled for intra prediction and a 16 × 16 multiplier array is configured for transforms of variable sizes with a constant 16 pixels/cycle throughput. Implementation results show that our proposed architecture costs about63 K Lookup tables and 62 KB on-chip memories on Xilinx Kintex-7 platform with the maximum working frequency at 175 MHz, which is sufficient for real-time encoding of 1920 × 1080 @60 fps video at 160 MHz. The flexibility and extension capability of our framework provides a great potential for future FPGA solutions serving for different purposes.DING Dandan WANG Silong LIU Zoe YUAN Qingshu 2019Chinese Journal of Electronics2019,28,5:2
12Study of peach freshness predictive method based on electronic nose显示文摘Hui Guohua Wu Yuling Ye Dandan Ding Wenwen Zhu Linshan Wang Lvye 2012Food Control2012,,1:2
13An adaptive pipelining scheme for H.264/AVC CABAC decoder显示文摘An adaptive pipelining scheme for H.264/AVC context-based adaptive binary arithmetic coding(CABAC) decoder for high definition(HD) applications is proposed to solve data hazard problems coming from the data dependencies in CABAC decoding process.An efficiency model of CABAC decoding pipeline is derived according to the analysis of a common pipeline.Based on that,several adaptive strategies are provided.The pipelining scheme with these strategies can be adaptive to different types of syntax elements(SEs) and the pipeline will not stall during decoding process when these strategies are adopted.In addition,the decoder proposed can fully support H.264/AVC high4:2:2 profile and the experimental results show that the efficiency of decoder is much higher than other architectures with one engine.Taking both performance and cost into consideration,our design makes a good tradeoff compared with other work and it is sufficient for HD real-time decoding.陈杰 Ding Dandan Yu Lu 2013High Technology Letters2013,19,4:1
14The utility of amplitude-integrated EEG and NIRS measurements as indices of hypoxic ischaemia in the newborn pig显示文摘Dandan Zhang Xinlin Hou Yunfeng Liu Congle Zhou Yuejia Luo Haiyan Ding 2011Clinical Neurophysiology2011,,8:1
15Effect of surface species on Cu-TiO 2 photocatalytic activity显示文摘Baifu Xin Peng Wang Dandan Ding Jia Liu Zhiyu Ren Honggang Fu 2008Applied Surface Science2008,,9:1
16Multidisciplinary Stepwise Management Strategy for Acute Superior Mesenteric Venous Thrombosis: An Intestinal Stroke Center Experience显示文摘Shuofei Yang Xinxin Fan Weiwei Ding Baochen Liu Jiaxiang Meng Dandan Xu Changsheng He Wenkui Yu Xingjiang Wu Jieshou Li 2014Thrombosis Research2014,,:1
17Modification of glassy carbon electrode with polyaniline/multi-walled carbon nanotubes composite:Application to electro-reduction of bromate显示文摘Ding Liang Li Qin Zhou Dandan 2012Journal of Electroanalytical Chemistry2012,668,1:1
18Design, synthesis, and antiviral activity of novel rutin derivatives containing 1, 4-pentadien-3-one moiety显示文摘HAN Yu DING Yan XIE Dandan 2015European journal of medicinal chemistry2015,92,:1
19Use of rice husk for the adsorption of congo red from aqueous solution in column mode 显示文摘Hart Runping Ding Dandan Xu Yanfang 2008Bioresource Technology2008,99,8:1
20Effect of surface species on Cu-TiO2 photocatalytic activity 显示文摘Xin Baifu Wang Peng Ding Dandan 2008Applied Surface Science2008,254,9:1
返回顶部 每页显示:
共3页 首页 上一页 第1页 下一页 末页 /3 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费