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1Pyroptosis is driven by non-selective gasdermin-D pore and its morphology is different from MLKL channel-mediated necroptosis显示文摘Necroptosis 和 pyroptosis 是有血浆膜破裂的一个普通特征的规划房间死亡的二种形式。这里,我们与 necroptosis 比较学习了 pyroptosis 的形态学和机制。与 necroptosis 不同, pyroptosis 经历膜 blebbing 并且生产 apoptotic 在血浆膜以前的像身体的房间伸出(称为的 pyroptotic 身体) 破裂。在 necroptosis 的破裂是像爆炸的,而在 pyroptosis 它导致房间变平。necroptosis 的实行被混合的系 kinase 调停,这被知道像域(MLKL ) 在血浆膜的 oligomers,而 gasdermin-D (GSDMD ) 调停在它由 caspase-1 或 caspase-11 的劈开以后的 pyroptosis。我们显示出那 N 终端碎片 caspase 劈开产生的 GSDMD (GSDMD-N ) 也形成 oligomer 并且移居到血浆膜杀死房间。MLKL 和 GSDMD-N 是脂性的,两蛋白质的 N 终端序列为他们的 oligomerization 和血浆膜 translocation 是重要的。不同于在血浆膜上形成隧道的 MLKL,那导致渗透地胀大的选择离子的流入冲破的房间, GSDMD-N 形成非选择的毛孔并且不依靠增加的 osmolarity 破坏房间。我们的学习表明 GSDMD 的形成毛孔的活动和 MLKL 的形成隧道的活动在 pyroptosis 和 necroptosis 决定血浆膜破裂的不同方法。Xin Chen Wan-ting He Lichen Hu Jingxian Li Yuan Fang Xin Wang Xiaozheng Xu Zhuo Wang Kai Huang Jiahuai Han 2016Cell Research2016,26,9:110
2Restoring urbanization process in China in the 1990s by using non-radiance-calibrated DMSP/OLS nighttime light imagery and statistical data显示文摘Since current administrative unit-based urban land area statistical data in China lack enough spatial information, the urbanization process re- search at large scale cannot be effectively supported. Based on the current administrative unit-based urban land area statistical data in China, a new approach to quickly and cheaply derive urban land information from the non-radiance-calibrated Defense Meteoro- logical Satellite Program/ Operational Linescan Sys- tem (DMSP/OLS) nighttime light imagery is pre- sented in this paper. With the new approach, the ur- ban pattern information in China in 1992, 1996 and 1998 was derived with the urbanization processes in China in the 1990s restored by using the non-ra- diance-calibrated DMSP/OLS nighttime imagery. The accuracy assessment based on the statistical data showed that the relative error between the derived total urban land area and the statistical data at na- tional scale was less than 2% in 1992, and less than 1% in 1996 and 1998, and the maximum relative er- ror at province scale do not exceed 10% with most of the provinces less than 3%. In addition, the urban patterns derived from the high-resolution Landsat TM imagery were compared with those from the DMSP/ OLS data. The results showed that the urban pattern characteristics derived from DMSP/OLS were basi-cally coincident with those from TM imagery with the total accuracy of about 80%. Thus it can be seen that our restored urbanization process in China in the 1990s by using the non-radiance DMSP/OLS night- time imagery can be accepted and can represent the actual urban development in China at that time on the whole.HE Chunyang SHI Peijun LI dinggang CHEN din PAN Yaozhong LI ding ZHUO Li Ichinose Toshiaki 2006Chinese Science Bulletin2006,51,13:55
3he Spectrum of Biopsy-Proven Glomerular Disease in China: A Systematic Review显示文摘Yue Yang Zheng Zhang Li Zhuo Da-Peng Chen Wen-Ge Li 2018Chinese Medical Journal2018,,6:53
4TiO_(2) Nanocrystals Grown on Graphene as Advanced Photocatalytic Hybrid Materials显示文摘A graphene/TiO_(2) nanocrystals hybrid has been successfully prepared by directly growing TiO_(2) nanocrystals on graphene oxide(GO)sheets.The direct growth of the nanocrystals on GO sheets was achieved by a two-step method,in which TiO_(2) was first coated on GO sheets by hydrolysis and crystallized into anatase nanocrystals by hydrothermal treatment in the second step.Slow hydrolysis induced by the use of EtOH/H2O mixed solvent and addition of H2SO4 facilitates the selective growth of TiO_(2) on GO and suppresses growth of free TiO_(2) in solution.The method offers easy access to the GO/TiO_(2) nanocrystals hybrid with a uniform coating and strong interactions between TiO_(2) and the underlying GO sheets.The strong coupling gives advanced hybrid materials with various applications including photocatalysis.The prepared graphene/TiO_(2) nanocrystals hybrid has superior photocatalytic activity to other TiO_(2) materials in the degradation of rhodamine B,showing an impressive three-fold photocatalytic enhancement over P25.It is expected that the hybrid material could also be promising for various other applications including lithium ion batteries,where strong electrical coupling to TiO_(2) nanoparticles is essential.Yongye Liang Hailiang Wang Hernan Sanchez Casalongue Zhuo Chen Hongjie Dai 2010Nano Research2010,3,10:57
5Epalrestat protects against diabetic peripheral neuropathy by alleviating oxidative stress and inhibiting polyol pathway显示文摘Epalrestat is a noncompetitive and reversible aldose reductase inhibitor used for the treatment of diabetic neuropathy. This study assumed that epalrestat had a protective effect on diabetic peripheral nerve injury by suppressing the expression of aldose reductase in peripheral nerves of diabetes mellitus rats. The high-fat and high-carbohydrate model rats were established by intraperitoneal injection of streptozotocin. Peripheral neuropathy occurred in these rats after sustaining high blood glucose for 8 weeks. At 12 weeks after streptozotocin injection, rats were intragastrically administered epalrestat 100 mg/kg daily for 6 weeks. Transmission electron microscope revealed that the injuries to myelinated nerve fibers, non-myelinated nerve fibers and Schwann cells of rat sciatic nerves had reduced compared to rats without epalrestat administuation. Western blot assay and immunohistochemical results demonstrated that after intervention with epalrestat, the activities of antioxidant enzymes such as superoxide dismutase, catalase and glutathione peroxidase gradually increased, but aldose reductase protein expression gradually diminished. Results confirmed that epalrestat could protect against diabetic peripheral neuropathy by relieving oxidative stress and suppressing the polyol pathway.Qing-rong Li Zhuo Wang Wei Zhou Shou-rui Fan Run Ma Li Xue Lu Yang Ya-shan Li Hong-li Tan Qi, ng-hua Shao Hong-ying Yang 2016Neural Regeneration Research2016,11,2:42
6Clean Coal Technologies in China: Current Status and Future Perspectives显示文摘Shiyan Chang Jiankun Zhuo Shuo Meng Shiyue Qin Qiang Yao 2016Engineering2016,2,4:43
7Erianin,a novel dibenzyl compound in Dendrobium extract,inhibits lung cancer cell growth and migration via calcium/calmodulin-dependent ferroptosis显示文摘Ferroptosis,a novel form of programmed cell death,is characterized by iron-dependent lipid peroxidation and has been shown to be involved in multiple diseases,including cancer.Stimulating ferroptosis in cancer cells may be a potential strategy for cancer therapy.Therefore,ferroptosis-inducing drugs are attracting more attention for cancer treatment.Here,we showed that erianin,a natural product isolated from Dendrobium chrysotoxum Lindl,exerted its anticancer activity by inducing cell death and inhibiting cell migration in lung cancer cells.Subsequently,we demonstrated for the first time that erianin induced ferroptotic cell death in lung cancer cells,which was accompanied by ROS accumulation,lipid peroxidation,and GSH depletion.The ferroptosis inhibitors Fer-1 and Lip-1 but not Z-VAD-FMK,CQ,or necrostatin-1 rescued erianin-induced cell death,indicating that ferroptosis contributed to erianin-induced cell death.Furthermore,we demonstrated that Ca^(2+)/CaM signaling was a critical mediator of erianin-induced ferroptosis and that blockade of this signaling significantly rescued cell death induced by erianin treatment by suppressing ferroptosis.Taken together,our data suggest that the natural product erianin exerts its anticancer effects by inducing Ca^(2+)/CaMdependent ferroptosis and inhibiting cell migration,and erianin will hopefully serve as a prospective compound for lung cancer treatment.Peng Chen Qibiao Wu Jiao Feng Lili Yan Yitian Sun Shuiping Liu Yu Xiang Mingming Zhang Ting Pan Xiaying Chen Ting Duan Lijuan Zhai Bingtao Zhai Wengang Wang Ruonan Zhang Bi Chen Xuemeng Han Yicong Li Liuxi Chen Ying Liu Xingxing Huang Ting Jin Wenzheng Zhang Hong Luo Xiaohui Chen Yongqiang Li Qiujie Li Guohua Li Qin Zhang Lvjia Zhuo Zuyi Yang Huifen Tang Tian Xie Xiaoping Ouyang Xinbing Sui 2020Signal Transduction and Targeted Therapy2020,5,1:42
8Characterization of dissolved organic matter in urban sewage using excitation emission matrix fluorescence spectroscopy and parallel factor analysis显示文摘Wastewater dissolved organic matter (DOM) from different processing stages of a sewage treatment plant in Xiamen was characterized using fluorescence and absorption spectroscopy. Parallel factor analysis modeling of excitation-emission matrix spectra revealed five fluorescent components occurring in sewage DOM: one protein-like (C1), three humic-like (C2, C4 and C5) and one xenobiotic-like (C3) components. During the aerated grit chamber and primary sedimentation tank stage, there was only a slight decrease in fluorescence intensity and the absorption coefficient at 350 nm (a 350 ). During the second aeration stage, high concentration of protein-like and short-wavelength-excited humic-like components were significantly degraded accompanied by significant loss of DOC (80%) and a 350 (30%), indicating that C1 and C2 were the dominant constituents of sewage DOM. As a result, long-wavelength-excited C4 and C5 became the dominant humic-like components and the DOM molecular size inferred from the variation of spectral slope S (300-650 nm) and specific absorption (a 280 /DOC) increased. Combination use of F max of C1 and the ratio of C1/C5, or a 350 may provide a quantitative indication for the relative amount of raw or treated sewage in aquatic environment.Weidong Guo Jing Xu Jiangping Wang Yingrou Wen Jianfu Zhuo Yuchao Yan 2010Journal of Environmental Sciences2010,22,11:36
9Advanced Asymmetrical Supercapacitors Based on Graphene Hybrid Materials显示文摘Supercapacitors 在水的答案操作是有能力的高骑车稳定性并且快收费并且排出的低费用精力存储设备,但是通常受不了低精力密度。这里,我们种 Ni (哦) 高质量的 graphene 表上的 2 nanoplates 和 RuO2 nanoparticles 以便最大化这些材料的特定的电容。我们然后在 Ni 上面配对(哦) 有一个 RuO2/graphene 电极到的 2/graphene 电极负担得起高效有在 1.5 V 的电压在水的答案操作的高精力和功率密度的不均匀的 supercapacitor。不均匀的 supercapacitor 基于 RuO2 碳或 Ni 比对称的 RuO2-RuO2 supercapacitors 或不均匀的 supercapacitors 展出显著地更高的精力密度(哦)2 碳电极对。48 W 甠瑬慲散瑮楲畦慧楴湯的高精力密度?Hailiang Wang Yongye Liang Tissaphern Mirfakhrai Zhuo Chen Hernan Sanchez Casalongue Hongjie Dai 2011Nano Research2011,4,8:37
10Chinese deserts and sand fields in Last Glacial Maximum and Holocene Optimum显示文摘The Last Glacial Maximum (LGM, c. 26-16 ka) and the Holocene Optimum (HO, c. 9-5 ka) were characterized by cold-dry and warm-wet climates respectively in the recently geological Earth. How Chinese deserts and sand fields responded to these distinctive climatic changes is still not clear, however. To reconstruct environments of the deserts and sand fields during the LGM and HO is helpful to understand the forcing mechanisms of environment change in this arid region, and to test paleoclimatic modeling results. Through our long-term field and laboratory investigations, 400 optically stimulated luminescence (OSL) ages and more than 100 depositional records in the Chinese deserts and sand fields were obtained; on the basis of these data, we reconstruct spatial distributions of the deserts and sand fields during the LGM and HO. Our results show that the sand fields of Mu Us, Hunshandake, Horqin and Hulun Buir in northern and northeastern China had expanded 25%, 37%, 38% and 270%, respectively, during the LGM; the sand fields of Gonghe in the northeastern Qinghai-Tibetan Plateau had expanded 20%, and the deserts of Badain Jaran, Tengger in central northern China had expanded 39% and 29% separately during the LGM; the deserts of Taklimakan, Gurbantünggüt and Kumtag in northwestern China had expanded 10%-20% respectively, compared to their modern areas. On the other hand, all of the sand fields were nearly completely covered by vegetation during the HO; the deserts in northwestern and central northern China were reduced by around 5%-20% in area during this time. Lakes in this arid region were probably expanded during the HO but this conclusion needs more investigation. Compared with the geological distributions of deserts and sand fields, human activity has clearly changed (expanded) the area of active sand dunes at the present time. Our observations show that environmental conditions of Chinese deserts and sand fields are controlled by regional climate together with human activity.LU HuaYu YI ShuangWen XU ZhiWei ZHOU YaLi ZENG Lin ZHU FangYing FENG Han DONG LiNa ZHUO HaiXin YU KaiFeng MASON Joseph WANG XiaoYong CHEN YingYong LU Qi WU Bo DONG ZhiBao QU JianJun WANG XunMing GUO ZhengTang 2013Chinese Science Bulletin2013,58,23:40
11Strategies of minimally invasive treatment for intrahepatic and extrahepatic bile duct stones显示文摘Zongming Zhang Zhuo Liu Limin Liu Mengmeng Song Chong Zhang Hongwei Yu Baijiang Wan Mingwen Zhu Zixu Liu Hai Deng Haiming Yuan Haiyan Yang Wenping Wei Yue Zhao 2017Frontiers of Medicine2017,11,4:37
12Clinical efficacy and safety of moxifloxacin versus levofloxacin plus metronidazole for community-acquired pneumonia with aspiration factors显示文摘Sun Tieying Sun Li Wang Rongmei Ren Xiaoping Sui Dong-jiang Pu Chun Ren Yajuan Liu Ying Yang Zhuo Li Fengzhi 2014Chinese Medical Journal2014,,7:34
13配戴角膜塑形镜和框架眼镜对近视儿童周边屈光度影响的随机对照临床试验显示文摘背景临床实践发现角膜塑形镜具有延缓近视及眼轴长度进展的效果,但对于角膜塑形镜配戴的相关作用机制,特别是角膜塑型术对视网膜中心和周边的离焦作用机制尚不完全清楚。目的观察低中度近视儿童配戴角膜塑形镜和框架眼镜6个月后周边屈光度以及相对周边屈光度(RPR)的变化。方法采用随机对照临床试验方法,于2014年6月至2015年1月在北京同仁眼科中心招募屈光度为-0.50~-6.00 D的低中度近视儿童100例,平均年龄(11.0±1.9)岁,均纳入右眼进行研究。受试者按入组顺序编号后由SAS统计软件PROC PLAN过程语句随机均分为角膜塑形镜组和框架眼镜组,每组50例50眼,戴镜时间均为6个月。采用开放视野红外自动验光仪分别测量戴镜前后中央0°、颞侧15°和30°、鼻侧15°和30°径线的屈光度,观察并比较各组受试眼戴镜前后周边屈光度和RPR(周边屈光度与中央屈光度差值)变化趋势。结果角膜塑形镜组和框架眼镜组受试者戴镜前屈光度分别为(-3.35±1.31)D和(-3.01±1.15)D,差异无统计学意义(P=0.201)。角膜塑形镜组受试眼戴镜前鼻侧30°、鼻侧15°、中央0°、颞侧15°和颞侧30°径线周边屈光度分别为(-2.28±1.60)、(-3.28±1.41)、(-3.40±1.23)、(-3.38±1.12)和(-2.09±1.29)D,受试眼除颞侧30°外戴镜后6个月近视度数均下降,戴镜前后鼻侧30°、鼻侧15°、中央0°、颞侧15°屈光度变化值分别为(0.29±1.67)、(0.85±1.66)、(0.92±1.76)和(0.66±1.66)D,其中鼻侧15°、中央0°、颞侧15°与戴镜前相比差异均有统计学意义(均P〈0.05)。框架眼镜组受试者戴镜前鼻侧30°、鼻侧15°、颞侧15°和颞侧30°径线周边屈光度分别为(-1.88±1.30)、(-2.66±1.18)、(-2.89±1.27)和(-1.94±1.31)D,戴镜后6个月上述各径线近视度数均增加,戴镜前后变化值分别为(-0.25±0.80)、(-0.43±0.67)、(-0.32±0.64)和(-0.22±0.75)D,与戴镜前比较差异均有统计学意义(均P〈0.05)。角膜塑形镜组受试者戴镜前各径线RPR均为远视性离焦状态,戴镜后6个月颞侧15°和颞侧30°RPR变为近视性离焦状态。框架眼镜组受试者戴镜前各径线RPR均为远视性离焦状态,戴镜后各径线RPR均呈远视性离焦加深状态。结论长期配戴角膜塑形镜能够使近视儿童的周边屈光度发生远视性漂移,视网膜周边呈现相对近视性离焦,而长期配戴框架眼镜则使周边屈光度发生近视漂移,视网膜周边远视性离焦加深。角膜塑形镜配戴可能通过改变周边屈光度而达到减缓近视进展的目的。魏士飞 李仕明 孙芸芸 康梦田 孟博 冉安然 严然 白雅雯 Zhuo Chen 王宁利 2017中华实验眼科杂志2017,35,10:34
14Mercury Emission From Coal-fired Power Plants in China显示文摘燃煤是最大的人为汞排放源之一,燃煤电厂的汞排放控制问题也越来越为人们所关注。该文将目前公布的中国电厂的汞排放数据进行筛选汇总,得到18个电厂的汞排放数据,通过对比和分析,总结出了符合我国燃煤电厂特点的一般性汞排放规律。结果表明:与美国煤种相比,我国的燃煤具有低氯、高灰的特性,这不利于汞的排放控制;循环流化床燃烧可能会因燃尽率的不同而较煤粉炉燃烧易获得较高的Hgp;空气污染控制设备的使用能够有效地减少汞排放,选择性催化还原+静电除尘器/布袋除尘器+石灰石-石膏湿法脱硫(SCR+ESP/FF+WFGD)组合的平均脱汞率可达71.48%;SCR的大规模应用可能会将汞大量转移到飞灰和脱硫石膏中,带来二次污染的问题。YIN Libao ZHUO Yuqun XU Qisheng ZHU Zhenwu DU Wen AN Zhongyi 2013中国电机工程学报2013,33,29:29
15Hydroxysafflor yellow A improves learning and memory in a rat model of vascular dementia by increasing VEGF and NR1 in the hippocampus显示文摘Hydroxysafflor yellow A(HSYA) has angiogenesisregulating and neuro-protective effects, but its effects on vascular dementia(VaD) are unknown. In this study, 30 adult Sprague-Dawley rats were randomly allocated to five groups: normal, sham-operation, VaD alone(bilateral carotid artery occlusion), VaD plus saline(control), and VaD plus HSYA. One week after operation, the HSYA group received one daily tail-vein injection of 0.6 mg/100 g HSYA for two weeks. Five weeks after operation, the spatial memory of all five groups was evaluated by the water maze task, and synaptic plasticity in the hippocampus was assessed by the long-term potentiation(LTP) method. Vascular endothelial growth factor(VEGF) and N-methyl-Daspartic acid receptor 1(NR1) expression in the hippocampus was detected via Western blot. We found that, compared with the group with VaD alone, the group with HSYA had a reduced escape latency in the water maze(P <0.05), and the LTP at CA3-CA1 synapses in the hippocampus was enhanced(P <0.05). Western blot in the late-phase VaD group showed slight up-regulation of VEGF and downregulation of NR1 in the hippocampus, while HSYA significantly up-regulated both VEGF and NR1. Theseresults suggested that HSYA promotes angiogenesis and increases synaptic plasticity, thus improving spatial learning and memory in the rat model of VaD.Nan Zhang Mengya Xing Yiyi Wang Hao Liang Zhuo Yang Fudong Shi Yan Cheng 2014Neuroscience Bulletin2014,30,3:30
16Oral health status in Sichuan Province: findings from the oral health survey of Sichuan, 2015–2016显示文摘To investigate oral health status in the residents of Sichuan Province, southwest China, a cross-sectional study was performed using the latest Oral Health Survey Basic Methods recommended by the World Health Organization. A multistage stratified random cluster-sampling method was used to enroll participants from the following three groups: children aged 3–5 years,adolescents aged 12 years, and people aged 65–74 years. In these three groups, the mean numbers of teeth that were affected by caries were 3.28, 0.86 and 5.13, respectively, resulting in a prevalence of 63.47%, 37.20% and 83.20%, respectively.Relative to the high rate of decayed teeth, the prevalence of fillings was very low in all age groups(0.97%, 7.24% and 5.43%,respectively). In the 12-year-old adolescent group, only 3.61% had good pit and fissure sealing. In addition, the rate of dental fluorosis was 24.80%, and the Community Fluorosis Index value was 0.39. In the elder group, the community periodontal index was2.92. The prevalence in the elderly of having lost at least one tooth was 75.54%. Additionally, 4.44% of these participants were edentulous. The incidence of dental prosthesis was 51.75%, the proportion with a removable partial denture, a fixed denture, full dentures, dental implants and an informal fixed bridge was 21.59%, 11.45%, 4.64%, 0 and 16.67%, respectively. In this study,8.2% of the elderly participants were affected by different types of oral mucosal lesions. Among such lesions, recurrent aphthous ulcers were most prevalent(2.69%) and oral lichen planuses were second(1.6%). The conclusion presented in this survey is that oral diseases, especially dental caries and periodontal disease, are frequent and common in Sichuan province, China. Moreover, the treatment rate is very low, and primary prevention and treatment options are therefore urgently needed in this population.Wei Yin Ying-Ming Yang Hong Chen Xue Li Zhuo Wang Li Cheng Qiu-Dan Yin Hong-Zhi Fang Wei Fei Fang-Lin Mi Min-Hai Nie Tao Hu Xue-Dong Zhou 2017International Journal of Oral Science2017,9,1:30
17Effect of a cancer vaccine prepared by fusions of hepatocarcinoma cells with dendritic cells显示文摘AIM To prepare a cancer vaccine (H22-DC) expressing high levels of costimulatory molecules based on fusions of hepatocarcinoma cells ( H22 ) with dendritic cells (DC) of mice and to analyze the biological characteristics and induction of specific CTL activity of H22-DC.``METHODS DCs were isolated from murine spleen by metrizamide density gradient centrifugation, purified based on its characteristics of semi-adhesion to culture plates and FcR , and were cultured in the medium containing GM. CSF and IL-4. A large number of DC were harvested. DCs were then fused with H22 cells by PEG and the fusion cells were marked with CDllc MicroBeads. The H22-DC was sorted with Mimi MACS sorter. The techniques of cell culture, immunocytochemistry and light microscopy were also used to test the characteristice of growth and morphology of H22-DC in vitro. As the immunogen, H22-DC was inoculated subcutaneously into the right armpit of BALB/C mice, and their tumorigenicity in vive was observed. MTT was used to test the CTL activity of murine spleen in vitro.``RESULTS DC cells isolated and generated were CD1 lc +cells with irregular shape, and highly expressed CD80,CD86 and CD54 molecules. H22 cells were CDllc cells with sphericel shape and bigger volume, and did not express CD80, CD86 and CD54 molecules. H22-DC was CDllc+ cells with bigger volume, being spherical, flat or irregular in shape, and highly expressed CD80, CD86 and CD54 molecules, too. H22-DC was able to divide and proliferate in vitro, but its activity of proliferation was significantly decreased as compared with H22 cells and its growth curve was flatter than H22 cells. After subcutaneous inoculation over 60 days, 1-12_2-DC showed no tumorigenecity in mice, which was significantly different from control groups (P< 0.01 ) . The spleen CTL activity against H22 cells in mice implanted with fresh H22-DC was significantly higher than control groups (P< 0.0l).``CONCLUSION H22-DC could significantly stimulate the specific CTL activity of murine spleen, which suggests that the fusion cells have already obtained the function of antigen presenting of parental DC and could present H22specific antigen which has not been identified yet, and H22-DC could induce antitumor immune response; although simply mixed H22 cells with DC could stimulate the specific CTL activity which could inhibit the growth of tumor in some degree, it could not prevent the generation of tumor. It shows that the DC vaccine is likely to become a helpful approach in immunotherapy of hepstocarcinoma.Juan Zhang~1 Jin-Kun Zhang~2 Shao-Hong Zhuo~3 Hai-Bin Chen~2 1 Clinical Laboratory,The First Affiliated Hospital of Shantou University Medical College,Shantou 515041,Guangdong Province,China2 Cancer Pathology Laboratory,Shantou University Medical College,Shantou 515031,Guangdong Province,China3 Department of Gastroenterology,Third Municipal Hospital of Shantou,Shantou 515073,Guangdong Province,China 2001World Journal of Gastroenterology2001,7,5:26
18Zircon SHRIMP U-Pb geochronology of the Neoproterozoic Chengjiang Formation in central Yunnan Province(SW China) and its geological significance显示文摘The Chengjiang Formation is the earliest continental clastic deposit after the Jinning Orogeny in central Yunnan Province,and therefore its accurate depositional age is significant for understanding the formation and evolution of the Neoproterozoic rift basins in southern China.However,hampered by accuracy of the dating technique,the existing age data for the Chengjiang Formation are not very reliable.A large number of magmatic zircons were obtained from the tuff interbed in the lower part of the Chengjiang Formation in Jinyang area and the bottom part of the Chengjiang Formation in Dongchuan area,central Yunnan Province,and high-precision SHRIMP U-Pb dating was carried out on these zircons.The results show that the weighted mean 206 Pb/238 U ages are 797.8±8.2 and 803.1±8.7 Ma respectively.In combination with related geological evidence,it has been demonstrated that the bottom boundary age of the Chengjiang Formation should be 800±5 Ma,whereas the top boundary age could be ca 725 Ma.By synthetically analyzing the latest age data for the relevant strata,it has been confirmed that the Chengjiang Formation should be correlated with the Suxiong Formation and the Kaijianqiao Formation in western Sichuan Province,the Liantuo Formation in the middle and lower Yangtze,the Hongchicun Formation and the Shangshu Formation in northern Zhejiang Province,the Puling Formation in southern Anhui Province,the Luokedong Formation and the Majianqiao Formation in northwestern Jiangxi Province,the Wuqiangxi Formation in northwestern Hunan Province,the Fanzhao Formation and the Qingshuijiang Formation in southeastern Guizhou Province,and the Sanmenjie Formation and the Gongdong Formation in northern Guangxi Province.Sedimentary cycle analysis shows that the sedimentary filling sequence of the Neoproterozoic rift basins in southern China can be divided into four cycles.Among them,Cycle II began at ca.800 Ma,accompanied by intensive tectonic-thermal events.The zircon U-Pb ages from the bottom of the Chengjiang Formation reported in this paper indicate that the Neoproterozoic Kangdian rift subbasin probably started to develop at ca.800 Ma and therefore missed Cycle I of the Neoproterozoic sedimentary filling sequence in southern China.JIANG XinSheng WANG Jian CUI XiaoZhuang ZHUO JieWen XIONG GuoQing LU JunZe LIU JianHui 2012Science China Earth Sciences2012,55,11:25
19Modified Da-chai-hu Decoction regulates the expression of occludin and NF-κB to alleviate organ injury in severe acute pancreatitis rats显示文摘Modified Da-chai-hu Decoction(MDD), a traditional Chinese medicinal formulation, which was empirically generated from Da-chai-hu decoction, has been utilized to treat severe acute pancreatitis(SAP) for decades. The aim of the present study was to explore its potential organprotective mechanism in SAP. In the present study, rat SAP model was induced by retrograde injection of 3.5% sodium taurocholate into the biliopancreatic duct, MDD(23.35 g/kg body weight, twelve times the clinical dose) were orally given at 2 h before and 10 h after injection. At 12 h after model induction, blood was taken from vena cava for analysis of amylase, diamine oxidase(DAO), pulmonary surfactant protein-A(SP-A), and C-reactive protein(CRP). Histopathological change of pancreas, ileum and lung was assayed by H&E staining, myeloperoxidase(MPO) activity were determinated using colorimetric assay, and the expressions of occludin and nuclear factor-κB(NF-κB) were detected by real-time RT-PCR and western blot, respectively. In addition, the tissue concentrations of tumor necrosis factor-α(TNF-α), interleukin-1β(IL-1β), and monocyte chemoattractant protein-1(MCP-1) were measured by enzyme-linked immunosorbent assay(ELISA). The results showed that in SAP rats, MDD significantly alleviated histopathological damage, depressed the MPO activity and the concentrations of TNF-α, IL-1β, and MCP-1 of pancreas, ileum and lung, and reduced the serum levels of amylase [(3283.4±585.5) U·L^(-1) vs(5626.4±795.1) U·L^(-1)], DAO[(1100.1±334.3) U·L^(-1) vs(1666.4±525.3) U·L^(-1)] and CRP [(7.6±1.2) μg·mL^(-1) vs(17.8±3.8) μg·mL^(-1)]. However, the serum SP-A concentration [(106.1±16.6) pg·mL^(-1) vs(90.1±14.9) pg·mL^(-1)] was elevated when treated SAP rats with MDD. Furthermore, MDD increased the occludin expression and reduced the NF-κB expression in pancreas, ileum and lung of SAP rats. Our findings suggested that MDD administration was an effective therapeutic approach for SAP treatment. It could up-regulate occludin expression to protect intercellular tight junction and down-regulate NF-κB expression to inhibit inflammatory reaction of pancreas, ileum and lung.ZHAO Guang ZHUO Yu-Zhen CUI Li-Hua LI Cai-Xia CHEN Sha-Yan LI Dan LIU Jun-Hong LI Di-Hua CUI Nai-Qiang ZHANG Shu-Kun 2019Chinese Journal of Natural Medicines2019,17,5:23
20The Chromosome-Level Genome Sequence of the Autotetraploid Alfalfa and Resequencing of Core Germplasms Provide Genomic Resources for Alfalfa Research显示文摘Alfalfa(Medicago sativa)is one of the most important forage crops in the world;however,its molecular genetics and breeding research are hindered due to the lack of a high-quality reference genome.Here,we report a de novo assembled 816-Mb high-quality,chromosome-level haploid genome sequence for‘Zhongmu No.1’alfalfa,a heterozygous autotetraploid.The contig N50 is 3.92 Mb,and 49165 genes are annotated in the genome.The alfalfa genome is estimated to have diverged from M.truncatula approximately 8 million years ago.Genomic population analysis of 162 alfalfa accessions revealed high genetic diversity,weak population structure,and extensive gene flow from wild to cultivated alfalfa.Genome-wide association studies identified many candidate genes associated with important agronomic traits.Furthermore,we showed that MsFTa2,a Flowering Locus T homolog,whose expression is upregulated in salt-resistant germplasms,may be associated with fall dormancy and salt resistance.Taken together,these genomic resources will facilitate alfalfa genetic research and agronomic improvement.Chen Shen Huilong Du Zhuo Chen Hongwei Lu Fugui Zhu Hong Chen Xiangzhao Meng Qianwen Liu Peng Liu Lihua Zheng Xiuxiu Li Jiangli Dong Chengzhi Liang Tao Wang 2020Molecular Plant2020,13,9:21
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