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| 1 | The Relationship between Glucose Excursion and Cognitive Function in Aged Type 2 Diabetes Patients显示文摘Objective Evidence suggests that type 2 diabetes (T2DM) is associated with an increased risk of dementia and that glucose variability is an independent risk factor for diabetic complications.This study investigated the relationship between glucose excursion and cognitive function in aged T2DM patients.Methods A total of 248 aged T2DM patients wore a continuous glucose monitoring system (CGMS) for 3 days in order to evaluate glucose excursion,including mean amplitude of glycemic excursions (MAGE) and mean of daily difference (MODD).All subjects were evaluated with a number of accepted cognitive function tests,including themini‐mental status examination (MMSE).The relationship between MAGE and MODD and performance on these cognitive tests was assessed.Results The MAGE and MMSE score were negatively correlated,likewise with the correlation between MODD and MMSE.Liner multivariate regression analysis showed that MAGE and MODD were also negatively related to MMSE independent of age,sex,glycemic control,hypertension,smoking,or coronary heart disease history.Conclusion Glucose excursion is related to cognitive function in aged T2DM patients.Elevated glucose excursion decreased the MMSE score,which reflects general cognitive function.Thus,therapy aimed at controlling glucose excursion may be beneficial for maintaining cognitive function in aged T2DM patients. | ZHONG Yuan ZHANG Xiao Yan MIAO Ya ZHU Jie Hua YAN Hong WANG Bei Yun JIN Jun HU Ting Jun JIA Wei Ping | 2012 | Biomedical and Environmental Sciences2012，25，1： | 34 |
| 2 | The Role of Fibrocyte in the Pathogenesis of Silicosis显示文摘Exposure to free silica induces silicosis and myofibroblasts are regarded as primary effector cells.Fibrocytes can differentiate into myofibroblast.Therefore,the present study was designed to investigate whether | LI Juan YAO Wu HOU Jian Yong ZHANG Lin BAO Lei CHEN Hui Ting WANG Di YUE Zhong Zheng LI Yi Ping ZHANG Miao YU Xing Hao ZHANG Jian Hui QU Ya Qian HAO Chang Fu | 2018 | Biomedical and Environmental Sciences2018，31，4： | 20 |
| 3 | Effectiveness of Different Waist Circumference Cut-off Values in Predicting Metabolic Syndrome Prevalence and Risk Factors in Adults in China显示文摘Objective To study the effectiveness of waist circumference cut-off values in predicting the prevalence of metabolic syndrome(MetS) and risk factors in adults in China. Methods A cross-sectional survey was condcuted in 14 provinces(autonomous region, municipality) in China. A total of 47 325 adults aged ≥20 years were selected by multistage stratified sampling, and questionnaire survey and physical and clinical examination were conducted among them. MetS was defined according to the International Diabetes Federation(IDF) criteria and modified IDF criteria.Results The age-standardized prevalence of MetS was 24.2%(22.1% in men and 25.8% in women) and 19.5%(22.1% in men and 18.0% in women) according to the IDF criteria and modified IDF criteria respectively. The age-standardized prevalence of pre-MetS was 8.1%(8.6% in men and 7.8% in women) according to the modified IDF criteria. The prevalence of MetS was higher in urban residents than rural residents and in northern China residents than in southern China residents. The prevalence of central obesity was about 30% in both men and women according to the ethnicity-specific cut-off values of waist circumference for central obesity(90 cm for men and 85 cm for women). Multivariate regression analysis revealed no significant difference in risk factors between the two MetS definitions. Conclusion Using both the modified IDF criteria and ethnicity-specific cut-off values of waist circumference can provide more useful information about the prevalence of MetS in China. | ZHOU Hai Cheng LAI Ya Xin SHAN Zhong Yan JIA Wei Ping YANG Wen Ying LU Ju Ming WENG Jian Ping JI Li Nong LIU Jie TIAN Hao Ming JI Qiu He ZHU Da Long CHEN Li GUO Xiao Hui ZHAO Zhi Gang Li Qiang ZHOU Zhi Guang GE Jia Pu SHAN Guang Liang | 2014 | Biomedical and Environmental Sciences2014，27，5： | 17 |
| 4 | Preparation and self-assembly of amphiphilic polymer with aggregation-induced emission characteristics显示文摘An amphiphilic polymer bearing tetraphenylethene (TPE) moiety was synthesized by convenient reactions. The polymer exhibits unique aggregation-induced emission (AIE) characteristics and can self-assemble to size-tunable particles in DMF/water mixtures. The polymer nanoparticles can be used for cell imaging, which provides a potential stable fluorescent tool to monitor the distribution of drugs and bioconjugates in living cells. | QIN AnJun ZHANG Ya HAN Ning MEI Ju SUN JingZhi FAN WeiMin TANG Ben Zhong | 2012 | Science China Chemistry2012，55，5： | 16 |
| 5 | Hyperinsulinemia,Insulin Resistance and Cognitive Decline in Older Cohort显示文摘Objective Type 2 diabetes has been recently recognized as an important risk factor for cognitive decline of patients with Alzheimer's disease (AD).But the roles of hyperinsulinemia (HI) and insulin resistance (IR) in the development of AD are still controversial.This study was designed to evaluate whether HI or IR influenced the cognitive functions of older cohort.Methods The cognitive functions of 328 consecutive elderly patients were evaluated with a battery of cognitive rating scales.Their fasting blood glucose (FBG) and fasting insulin (FINS) were analyzed and IR was calculated with modified‐Homa.The cognitive scores in different groups and the correlation of cognitive functions with HI or IR were analyzed.Results In our study,there were 180 participants with HI and 148 without HI,and 192 with IR and 136 without IR.The participants with HI showed worse cognitive functions than those without HI in MMSE,MOCA,CDR,orientation,delayed memory,and attention/calculation domains.Similarly,the elderly with IR had lower cognitive scores than those without IR in MMSE,MOCA,CDR,GDS,orientation,delayed memory,and attention/calculation domains.The insulin levels and Homa IR had negative correlation with the scores of MMSE and delayed memory,not only in the model 1 adjusted for FBG and diabetes history,but also in the model 2 adjusted for all nine demographic characteristics.Conclusion HI and IR are important risk factors for cognitive decline of the elderly,especially for the dysfunctions in delayed memory domains. | ZHONG Yuan MIAO Ya JIA Wei Ping YAN Hong WANG Bei Yun JIN Jun | 2012 | Biomedical and Environmental Sciences2012，25，1： | 11 |
| 6 | Oxidative Stress and Apoptotic Changes of Rat Cerebral Cortical Neurons Exposed to Cadmium in Vitro显示文摘Objective To investigate the cytotoxic mechanism of cadmium(Cd) on cerebral cortical neurons.Methods The primary cultures of rat cerebral cortical neurons were treated with different concentrations of cadmium acetate(0,5,10,and 20 μmol/L),and then the cell viability,apoptosis,ultrastructure,intracellular [Ca2+]i and reactive oxygen species(ROS) levels,mitochondrial membrane potential(ΔΨ),activities of catalase(CAT) and superoxide dismutase(SOD) were measured.Results A progressive loss in cell viability and an increased number of apoptotic cells were observed.In addition,Cd-induced apoptotic morphological changes in cerebral cortical neurons were also demonstrated by Hoechst 33258 staining.Meanwhile,ultrastructural changes were distortion of mitochondrial cristae and an unusual arrangement.Simultaneously,elevation of intracellular [Ca2+]i and ROS levels,depletion of ΔΨ were revealed in a dose-dependent manner during the exposure.Moreover,CAT and SOD activities in the living cells increased significantly.Conclusion Exposure of cortical neurons to different doses of Cd led to cellular death,mediated by an apoptotic mechanism,and the apoptotic death induced by oxidative stress may be a potential reason.And the disorder of intracellular homeostasis caused by oxidative stress and mitochondrial dysfunction may be a trigger for apoptosis in cortical neurons. | YUAN Yan BIAN Jian Chun LIU Xue Zhong ZHANG Ying SUN Ya LIU Zong Ping | 2012 | Biomedical and Environmental Sciences2012，25，2： | 10 |
| 7 | The Development of A Fluorescence Polarization Immunoassay for Aflatoxin Detection显示文摘A fluorescence polarization immunoassay(FPIA)was developed for the analysis ofaflatoxins(AFs)using an anti-aflatoxin B1(AFB1)monoclonal antibody and a novel fluorescein-labeled AFB1tracer.The FPIA showed an IC50 value of 23.33ng/mL with a limit of detection of 13.12 ng/mL for AFB1.The cross-reactivities of AFB1,AFB2,AFG1,AFG2,AFM1,and AFM2 with the antibody were100%,65.7%,143%,23.5%,111.4%,and 2%,respectively.The group-specificity of anti-AFB1mAb indicated that the FPIA could potentially be used in a screening method for the detection of total AFs,albeit not AFG2 and AFM2.The total time required for analyzing 96 samples in one microplate was less than 5 min.This study demonstrates the potential usefulness of the FPIA as a rapid and simple technique for monitoring AFs. | SHENG Ya Jie EREMIN Sergei MI Tie Jun ZHANG Su Xia SHEN Jian Zhong WANG Zhan Hui | 2014 | Biomedical and Environmental Sciences2014，27，2： | 10 |
| 8 | Fourth C hinese National Consensus Report on the management of H elicobacter pylori infection显示文摘 | Wen Zhong Liu Yong Xie Hong Cheng Nong Hua Lu Fu Lian Hu Wan Dai Zhang Li Ya Zhou Ye Chen Zhi Rong Zeng Chong Wen Wang Shu Dong Xiao Guo Zong Pan Pin Jin Hu | 2013 | Journal of Digestive Diseases2013，，5： | 9 |
| 9 | Cadmium Activates Reactive Oxygen Species-dependent AKT/mT OR and Mitochondrial Apoptotic Pathways in Neuronal Cells显示文摘Objective To examine the role of Cd-induced reactive oxygen species(ROS)generation in the apoptosis of neuronal cells.Methods Neuronal cells(primary rat cerebral cortical neurons and PC12 cells)were incubated with or without Cd post-pretreatment with rapamycin(Rap)or N-acetyl-L-cysteine(NAC).Cell viability was determined by MTT assay,apoptosis was examined using flow cytometry and fluorescence microscopy,and the activation of phosphoinositide 3'-kinase/protein kinase B(Akt)/mammalian target of rapamycin(m TOR)and mitochondrial apoptotic pathways were measured by western blotting or immunofluorescence assays.Results Cd-induced activation of Akt/m TOR signaling,including Akt,m TOR,p70 S6 kinase(p70 S6K),and eukaryotic initiation factor 4E binding protein 1(4E-BP1).Rap,an m TOR inhibitor and NAC,a ROS scavenger,blocked Cd-induced activation of Akt/m TOR signaling and apoptosis of neuronal cells.Furthermore,NAC blocked the decrease of B-cell lymphoma 2/Bcl-2 associated X protein(Bcl-2/Bax)ratio,release of cytochrome c,cleavage of caspase-3 and poly(ADP-ribose)polymerase(PARP),and nuclear translocation of apoptosis-inducing factor(AIF)and endonuclease G(Endo G).Conclusion Cd-induced ROS generation activates Akt/m TOR and mitochondrial pathways,leading to apoptosis of neuronal cells.Our findings suggest that m TOR inhibitors or antioxidants have potential for preventing Cd-induced neurodegenerative diseases. | YUAN Yan WANG Yi HU Fei Fei JIANG Chen Yang ZHANG Ya Jing YANG Jin Long ZHAO Shi Wen GU Jian Hong LIU Xue Zhong BIAN Jian Chun LIU Zong Ping | 2016 | Biomedical and Environmental Sciences2016，29，2： | 8 |
| 10 | Biomimetic albumin-modified gold nanorods for photothermo-chemotherapy and macrophage polarization modulation显示文摘Nanotechnology-based photothermal therapy has attracted great attention in the past decade. Nevertheless, photothermal therapy has some inherent drawbacks, such as the uneven heat production and limited laser penetration, often leading to insufficient treatment outcomes. Here, we developed a combination strategy to improve cancer therapy. The biomimetic albumin-modified gold nanorods(AuNRs) were prepared with incorporation of paclitaxel(PTX). This therapeutic system was characterized by several features. First, the albumin modification enhanced the biocompatibility and colloidal stability. Second, the surface-coated albumin promoted cellular uptake via the albumin-binding protein pathway. Third, PTX was incorporated via hydrophobic interaction between PTX and the albumin lipophilic domain. Fourth, the system can be used for combined photothermo-chemotherapy for yielding synergistic effects. The antitumor activity of the system was evaluated both in vitro and in vivo using the HCT116 colon cancer cell and tumor model. The combination therapy was found with an enhanced treatment efficiency and no obvious side effect. Most importantly, the thermal effect was also discovered with the ability to modulate the tumor microenvironments and suppress the macrophages polarization towards the M2 pro-tumor phenotype. It could be a mechanism for photothermal immunotherapy. The combination strategy and the system provide a potential method for cancer therapy. | Dongdong Li Meng Zhang Fan Xu Yingzhi Chen Binfan Chen Ya Chang Huihai Zhong Hongyue Jin Yongzhuo Huang | 2018 | Acta Pharmaceutica Sinica B2018，8，1： | 8 |
| 11 | Would integrated Western and traditional Chinese medicine have more benefits for stroke rehabilitation? A systematic review and meta-analysis显示文摘Background Stroke is a major cause of death or long-term disability worldwide.Many patients with stroke receive integrative therapy consisting of Western medicine(WM)and routine rehabilitation in conjunction with Chinese medicine(CM),such as acupuncture and Chinese herbal medicine.However,there is no available evidence on the effectiveness of the combined use of WM and CM interventions in stroke rehabilitation.Aims The purpose of this meta-analysis is to evaluate the results of all individual studies to assess the combined use of CM and WM in stroke rehabilitation compared with WM only.Methods The Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines were followed.MEDLINE,EMBASE,Cochrane and China National Knowledge Infrastructure(CNKI)were searched.The included outcomes were dependency,motor function,depression and swallowing function.Subgroup analysis was performed,and publication bias was assessed using funnel plots.Summary of review 58 studies and 6339 patients were included in the meta-analysis.Subgroup analysis revealed that combined therapy comprising both acupuncture and WM had a superior effect on improving dependency and swallowing function compared with standard WM therapy alone.Potential superiority of combined therapy comprising CM and WM in improving depression compared with standard WM therapy was also found.Conclusions Our results indicate that the combined use of CM and WM could be more efficacious in stroke rehabilitation compared with the use of WM therapy alone.However,most studies were short in duration(2 to 4 weeks)and prone to different types of biases,which prevents making any conclusion regarding the long-term effects and raises concerns regarding true efficacy in context of high likelihood of Hawthorn bias.So,more randomised controlled trials with more rigorous design and longer duration of treatment and follow-up need to be conducted to compare WM alone versus WM and CM combined. | Linda LD Zhong Ya Zheng Alexander Y Lau Norman Wong Liang Yao Xingyao Wu Tengteng Shao Zhenxing Lu Huijuan Li Chun Sum Yuen Jianwen Guo Suzanne Lo Janita Chau Kam Wa Chan Bacon Fung Leung Ng Zhaoxiang Bian Edwin Chau-leung Yu | 2022 | Stroke & Vascular Neurology2022，7，1： | 7 |
| 12 | Three new phenanthrenes from Monomeria barbata Lindl.显示文摘Three new monophenanthrene compounds were isolated from an acetone extract of the tubers of Monomeria barbata Lindl. (Orchidaceae).Using spectroscopic methods,the structures of compounds 1-3 were determined as 1,4,7-trihydroxy-2-methoxy- 9,10-dihydrophenanthrene(1),1-(p-hydroxybenzoyl)-2-methoxy-4,7-dihydroxy-9,10-dihydrophenanthrene(2),1,3,8-tri(p-hydroxybenzyl) -4-methoxy-phenanthrene-4,7-diol(3).These compounds showed cytotoxicities on four tumor cell lines(HepG2, HL-60,Skov-3,A431). | Yang, Ming Hui Cai, Le Li, Mei Hong Zeng, Xiang Hui Yang, Ya Bin Ding, Zhong Tao | 2010 | Chinese Chemical Letters2010，21，3： | 5 |
| 13 | Triboelectric nanogenerators as flexible power sources显示文摘The triboelectric nanogenerator(TENG)as a new power-generation technology was reported by Wang and co-workers in 2012.Because of its great potential for scavenging mechanical energy from living environment and sustainably driving portable devices,many researchers have developed various methods to improve output performances of TENG.In this paper,we review the progress in TENG made as flexible power sources by integrating flexible materials and stretching structures,especially for the applications of flexible electronics.For optimizing performances of TENG,the structural designs,material selections,and hybrid energy cells are presented.The reported TENG as flexible power sources has the potential applications in lighting up light emitting diodes(LEDs),powering sensors,and monitoring biomechanical motions. | Yang Wang Ya Yang Zhong Lin Wang | 2017 | npj Flexible Electronics2017，1，1： | 5 |
| 14 | Layered Birnessite Cathode with a Displacement/Intercalation Mechanism for High-Performance Aqueous Zinc-Ion Batteries显示文摘Mn-based rechargeable aqueous zinc-ion batteries(ZIBs)are highly promising because of their high operating voltages,attractive energy densities,and eco-friendliness.However,the electrochemical performances of Mn-based cathodes usually suffer from their serious structure transformation upon charge/discharge cycling.Herein,we report a layered sodium-ion/crystal water co-intercalated Birnessite cathode with the formula of Na0.55Mn2O4·0.57H2O(NMOH)for high-performance aqueous ZIBs.A displacement/intercalation electrochemical mechanism was confirmed in the Mn-based cathode for the first time.Na+and crystal water enlarge the interlayer distance to enhance the insertion of Zn^2+,and some sodium ions are replaced with Zn^2+ in the first cycle to further stabilize the layered structure for subsequent reversible Zn^2+/H^+ insertion/extraction,resulting in exceptional specific capacities and satisfactory structural stabilities.Additionally,a pseudo-capacitance derived from the surface-adsorbed Na^+ also contributes to the electrochemical performances.The NMOH cathode not only delivers high reversible capacities of 389.8 and 87.1 mA h g^−1 at current densities of 200 and 1500 mA g^−1,respectively,but also maintains a good long-cycling performance of 201.6 mA h g^−1 at a high current density of 500 mA g^−1 after 400 cycles,which makes the NMOH cathode competitive for practical applications. | Xian‑Zhi Zhai Jin Qu Shu‑Meng Hao Ya‑Qiong Jing Wei Chang Juan Wang Wei Li Yasmine Abdelkrim Hongfu Yuan Zhong‑Zhen Yu | 2020 | Nano-Micro Letters2020，12，4： | 4 |
| 15 | Studies on the Synthesis of a Natural Product-Piceatannol and its Analogs显示文摘Piceatannol, (E)-3, 3, 4, 5-tetrahydroxy stilbene, a natural polyhydroxy stilbene, possesses many biological activities, its synthesis has been reported. We designed another route of its synthesis, which can be controlled more easily. The synthetic product was characterized by elemental analysis, IR, MS and 1H-NMR. Its analogs were synthesized by the similar method. | Zhi Song PIAO, Lin WANG*, Ya Bin FENG , Zhi Zhong ZHAO Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical Collage, Beijing 100050 | 2002 | Chinese Chemical Letters2002，13，6： | 4 |
| 16 | Perceived resource support for chronic illnesses among diabetics in north-western China显示文摘社会支持的高水平能改进长期的糖尿病自我管理。从单身的来源的支持被评估了。这研究试图分析支持从多重并且为由使用长期的病资源的糖尿病的病人的 multilevel 来源调查(CIRS ) 。影响 CIRS 的利用的因素也被评估。有糖尿病的 297 个病人的一个总数用 CIRS 被调查并且在 Shihezi 城市里察觉了糖尿病自我管理规模,中国。描述的统计被用来解释规模的人口统计的变量和分数。影响长期的病资源的利用的因素通过 univariate 分析被决定然后由 multivariate 检验了逻辑回归分析。调查的 297 个糖尿病的病人, 67% 没能到达利用长期的病资源的标准(超过 3 个点) 。而且,长期的病资源的利用中等断然与糖尿病的自我管理被相关(r = 0.75, P < 0.05 ) 。根据 multivariate 逻辑回归分析,变老(或, 3.42;95%CI, 1.19-9.84 ) 并且每月的收入(或, 5.27;95%CI, 1.86-14.90 ) 断然显著地与 CIRS 分数被联系。有高中的个人(或, 2.61;95%CI, 1.13-6.05 ) 并且学院(或, 3.02;95%CI, 1.13-8.04 ) 度与小学教育比那些在调查获得了更高的分数。结果显示了为长期的病自我管理,特别地个人的调整和组织的资源和支持的那利用,不在在西北的中国的社区的糖尿病患者之中是理想的。长期的病资源的改进利用为合适的糖尿病自我管理是导致的。而且,长期的病资源的利用的水平与年龄,有文化水平,和每月的收入增加了。 | Huiqin Zhong Ya Shao Ling Fan Tangshen Zhong Lu Ren Yan Wang | 2016 | Frontiers of Medicine2016，10，2： | 3 |
| 17 | Effects of ramipril on ventricular arrhythmia after myocardial infarction in rabbits显示文摘BACKGROUND: V entricular arrhythmia(VA) is one of the most common complications of myocardial infarction(MI), and ventricular tachycardia and fi brillation are the main causes for sudden cardiac death. This study aimed to explore the effect of ramipril on the occurrence of VA and its mechanism after MI in rabbits.METHODS: Twenty-four New Zealand rabbits purchased from the Wuhan Laboratory Animal Research Center were divided into three groups: sham-operated(SHAM) group(n=8), MI group(n=8) and MI with ramipril(RAM) group(n=8). Rabbits in the SHAM group received a median sternotomy without ligation of the left ventricular coronary artery. Rabbits in the MI and RAM groups received a median sternotomy followed by ligation of the left coronary artery. The successful anterior MI was confi rmed by elevation of the ST segment with more than 0.2 mV in lead II and III. After MI, rabbits in the RAM group were fed with intragastric ramipril(1 mg/kg per day) for 12 weeks. Before and 12 weeks after MI in the three groups, ventricular tachycardia or fi brillation(VT/VF) episodes and MAP in cadiocytes of the epicardium, mid-myocardium and endocardium were recorded by a multichannel physiograph. Student's t test and ANOVA were used for statistical analysis.RESULTS: VT/VF episodes were decreased more markedly in the RAM group than in the MI group after 12 weeks(2.6±0.8 vs. 12.4±2.9, P<0.05). Twelve weeks after MI, the duration of repolarization for 90%(APD90) of three-tier ventricular myocytes in the MI group was longer than that before MI(258.2±21.1 vs. 230.1±23.2, 278.0±23.8 vs. 245.8±25.4, 242.6±22.7 vs. 227.0±21.7, P<0.05). However, the APD90 was not signif icantly different at 12 weeks before and after MI in the RAM group(P>0.05). Moreover, the transmural dispersion of repolarization(TDR) was increased more markedly 12 weeks after MI in the MI group than in the SHAM and RAM groups(36.2±10.2 vs. 18.7±6.2, 24.9±8.7, P<0.05). But the TDR was not signifi cantly different between the RAM and SHAM groups(18.7±6.2 vs. 24.9±8.7, P>0.05).CONCLUSION: Ramipril may reduce the incidence of malignant ventricular arrhythmia via improvement of transmembrance repolarization heterogeneity after MI. | Ya Zhong Ping Cao Chuan-feng Tong Xia Li | 2014 | World Journal of Emergency Medicine2014，5，2： | 3 |
| 18 | Synthesis and antitumor activity of novel 10-amino acids ester homocamptothecin analogues显示文摘九外消旋的 homocamptothecin 衍生物被综合,在 vitro antitumor,活动被标准 MTT 方法评估。结果比 iritecan 显示出复合有的更高的 antitumor 活动的那一些。 | Liang You Wan Nian Zhang Zhen Yuan Miao Wei Guo Xiao Ying Che Wen Ya Wang Chun Quan Sheng Jiang Zhong Yao Ting Zhou | 2008 | Chinese Chemical Letters2008，19，7： | 3 |
| 19 | Effect of Cadmium on Rat Leydig Cell Testosterone Production and DNA Integrity in vitro显示文摘Cadmium(Cd)is an elemental heavy metal with widely recognized toxicity.Its long-term use in industrial processes and daily activities has caused alarming levels of Cd contamination in the natural environment.According to the estimates by the Agency of Toxic Substances and Disease Registry in the US,25 000 to 30 000 metric tons of Cd is annually released to the environment[1].Results of previous studies have demonstrated that several organs are targets of Cd,but the most important of these targeted organs may be the testes.Cadmium can cause the apoptosis of testis cells and modify | LIU Qing GU Jian Hong YUAN Yan LIU Xue Zhong WANG Ya Jun WANG Han Dong LIU Zong Ping WANG Zong Yuan BIAN Jian Chun | 2013 | Biomedical and Environmental Sciences2013，26，9： | 3 |
| 20 | Decrease in DNA methylation 1(DDM1) is required for the formation of ~mCHH islands in maize显示文摘DNA methylation plays a crucial role in suppressing mobilization of transposable elements and regulation of gene expression. A number of studies have indicated that DNA methylation pathways and patterns exhibit distinct properties in different species, including Arabidopsis, rice, and maize.Here, we characterized the function of DDM1 in regulating genome-wide DNA methylation in maize. Two homologs of Zm DDM1 are abundantly expressed in the embryo and their simultaneous disruption caused embryo lethality with abnormalities in cell proliferation from the early stage of kernel development. We establish that Zm DDM1 is critical for DNA methylation, at CHG sites, and to a lesser extent at CG sites, inheterochromatic regions, and unexpectedly, it is required for the formation ofmCHH islands. In addition, Zm DDM1 is indispensable for the presence of 24-nt si RNA, suggesting its involvement in the Rd DM pathway. Our results provide novel insight into the role of Zm DDM1 in regulating the formation of mCHH islands, via the Rd DM pathway maize, suggesting that,in comparison to Arabidopsis, maize may have adopted distinct mechanisms for regulating ~mCHH. | Jin Cheng Long Ai Ai Xia Jing Han Liu Ju Li Jing Ya Zhong Wang Chuang Ye Qi Yan He | 2019 | Journal of Integrative Plant Biology2019，61，6： | 2 |
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