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1The first offshore natural gas hydrate production test in South China Sea显示文摘Natural gas hydrates (NGH)is one of key future clean energy resources.Its industrialized development will help remit the huge demand of global natural gas,relieve the increasing pressure of the environment, and play a vital role in the green sustainable growth of human societies.Based on nearly two decades' studying on the reservoir characteristics in the South China Sea (SCS)and the knowledge of reservoir system,the China Geological Survey (CGS)conducted the first production test on an optimal target selected in Shenhu area SCS in 2017.Guided by the 'three-phase control'exploitation theory which focused on formation stabilization,technologies such as formation fluid extraction,well drilling and completing, reservoir stimulating,sand controlling,environmental monitoring,monitoring and preventing of secondary formation of hydrates were applied.The test lasted for 60 days from May 10^th when starting to pump, drop pressure and ignite to well killing on July 9^th,with gas production of 3.09×10^5 m^3 in total,which is a world record with the longest continuous duration of gas production and maximal gas yield.This successful test brings a significant breakthrough on safety control of NGH production.Jin-fa Li Jian-liang Ye Xu-wen Qin Hai-jun Qiu Neng-you Wu Hai-long Lu Wen-wei Xie Jing-an Lu Fei Peng Zhen-qiang Xu Cheng Lu Zeng-gui Kuang Jian-gong Wei Qian-yong Liang Hong-feng Lu Bei-bei Kou 2018China Geology2018,1,1:117
2Paleogene-Neogene stratigraphic realm and sedimentary sequence of the Qinghai-Tibet Plateau and their response to uplift of the plateau显示文摘Based on the data of 1:250000 geological mapping completed by CGS and the previous literature of the Cenozoic strata, 98 remnant basins and 5 stratigraphic realms with 13 stratigraphic subrealms have been recognized on the Qinghai-Tibet Plateau and its adjacent area. Through the research of the types of remnant basins, tectonic setting, stratigraphic sequence and sedimentary characteristics, contact relationship between the strata, the formation time and evolution history of sediments, we divided the uplift process and sedimentary response of the Qinghai-Tibet Plateau into 3 stages and 8 sub-stages, namely, subduction-collision uplift stage (65-34 Ma) with three sub-stages, intercontinental convergence and compressive uplift stage (34-13 Ma) with three sub-stages, and intercontinental isostatic adjustment uplift stage (since 13 Ma) with two sub-stages.ZHANG KeXin WANG GuoCan JI JunLiang LUO ManSheng KOU XiaoHu WANG YueMing XU YaDong CHEN FenNing CHEN RuiMing SONG BoWen ZHANG JianYu LIANG YinPing 2010Science China Earth Sciences2010,53,9:49
3Fintech investments in European banks:a hybrid IT2 fuzzy multidimensional decision‑making approach显示文摘Financial technology(Fintech)makes a significant contribution to the financial system by reducing costs,providing higher quality services and increasing customer satisfaction.Hence,new studies play an essential role to improve Fintech investments.This study evaluates Fintech-based investments of European banking services with an application of an original methodology that considers interval type-2(IT2)fuzzy decision-making trial and evaluation laboratory and IT2 fuzzy TOPSIS models.Empirical findings are controlled for consistency by applying the VIKOR method.Moreover,we conduct a sensitivity analysis by considering six distinct cases.This study contributes to the existing literature by identifying the most important Fintech-based investment alternatives to improve the financial performance of European banks.Our empirical findings illustrate that results are coherent,reliable,and identify“competitive advantage”as the most important factor among Fintech-based determinants.Moreover,“payment and money transferring systems”are the most important Fintech-based investment alternatives.It is recommended that,among Fintech-based investments,European banks should mainly focus on payment and money transferring alternatives to attract the attention of customers and satisfy their expectations.This is also believed to have a positive impact on the ease of bank’receivable collection.Another important point is that Fintech-based investments in money transferring systems could help to decrease costs.Gang Kou Ozlem Olgu Akdeniz Hasan Dincer Serhat Yuksel 2021Financial Innovation2021,7,1:38
4Cenozoic sedimentary records and geochronological constraints of differential uplift of the Qinghai-Tibet Plateau显示文摘Geological mapping data (1:250000) in the Qinghai-Tibet Plateau and its adjacent regions reveal the sediment sequences, distribution and tectonic evolution of the 92 Tertiary remnant basins. Southern Tibet and the Yecheng area in Xinjiang, located at southern and northwestern margins of the Qinghai-Tibet Plateau, respectively, were parts of the Neo-Tethys remnant sea in the Paleogene. In southern Tibet, both the subabyssal and abyssal sequences occur at the Gyangze, Saga, Guoyala, and Sangmai areas. The deep-water facies successions outcrop in the west, whereas the shallow-water facies sequences in the east, indicating the east to the west retreat of the Neo-Tethys Ocean. The retreat of the Neo-Tethys Ocean in the east was contributed to the earlier tectonic uplift of the eastern Qinghai-Tibet Plateau. The uplift process of the Plateau from the Late Cretaceous to Pliocene is described as follows: During the Late Cretaceous, tectonic uplift of the Qinghai-Tibet Plateau occurred in the northeastern part and the configuration of the Qinghai-Tibet Plateau was characterized by rise in the northeast and depression in the west. In the Paleocene-Eocene interval, the Tengchong-Baingoin and Kuyake-Golmud areas experienced local tectonic uplifting, the West Kunlun uplift zone broadened easterly, the Qilian uplift zone broadened southerly, and the Songpan-Garzê uplift zone shrank easterly. The Oligocene configuration of the Qinghai-Tibet Plateau was characterized by mountain chains rising along its margins and sedimentary basins in the central part because of tectonic uplifts of the Gangdisê and the Himalaya blocks. Meanwhile, the Kunlun-Altyn-Qilian uplift zones have also broadened southerly and northerly. In contrast, the great uplift zones of the Gangdisê, the Himalaya, the Karakorum, and the Kunlun blocks characterize the paleogeographic contours of the Qinghai-Tibet Plateau during the Miocene-Pliocene. Additionally, the thermochronological data on tectonic uplift events in southern Tibet, West Kunlun Mountains, Altyn Tagh, eastern Tibet, and western Sichuan all suggest that the most intense deformation occurred at 13-8 Ma and since 5 Ma, respectively, corresponding to two great uplift periods in Neogene. As a result, turnover of paleogeographic configuration of the Qinghai-Tibet Plateau occurred during the Neogene, experiencing a change from high contours in the east in the pre-Oligocene to high contours in the west at the end-Pliocene. The uplift of the Qinghai-Tibet Plateau during the Cenozoic was episodic, and the uplifts of various blocks within the Plateau were spatially and chronologically different.ZHANG KeXin WANG GuoCan CAO Kai LIU Chao XIANG ShuYuan HONG HanLie KOU XiaoHu XU YaDong CHEN FenNing MENG YanNing CHEN RuiMing 2008Science China Earth Sciences2008,51,11:31
5Research progress on silicon/carbon composite anode materials for lithium-ion battery显示文摘Silicon(Si) has been considered as one of the most promising anode material for the next generation lithium-ion batteries(LIBs) with high energy densities, due to its high theoretical capacity, abundant availability and environmental friendliness. However, silicon materials with low intrinsic electric and ionic conductivity suffer from huge volume variation during lithiation/delithiation processes leading to the pulverization of Si and subsequently resulting in severe capacity fading of the electrodes. Coupling of Si with carbon(C) realizes a favorable combination of the two materials properties, such as high lithiation capacity of Si and excellent mechanical and conductive properties of C, making silicon/carbon composite(Si/C) ideal candidates for LIBs anodes. In this review, recent progresses of Si/C materials utilized in LIBs are summarized in terms of structural design principles, material synthesis methods, morphological characteristics and electrochemical performances by highlighting the material structures. The mechanisms behind the performance enhancement are also discussed. Moreover, other factors that affect the performance of Si/C anodes, such as prelithiation, electrolyte additives, and binders, are also discussed. We aim to present a full scope of the Si/C-based anodes, and help understand and design future structures of Si/C anodes in LIBs.Xiaohui Shen Zhanyuan Tian Ruijuan Fan Le Shao Dapeng Zhang Guolin Cao Liang Kou Yangzhi Bai 2018Journal of Energy Chemistry2018,27,4:29
6Mesenchymal stem cell transplantation in tight-skin mice identifies miR-151-5p as a therapeutic target for systemic sclerosis显示文摘全身的硬化(SSc ) ,自体免疫的疾病,可以由于 IL4R/mTOR 小径的激活引起重要 osteopenia。间充质的干细胞移植(MSCT ) 能改善在经由导致有免疫力的忍耐的 SSc 的有免疫力的混乱。然而, MSCT 是否在 SSc 救 osteopenia 显型,是未知的。这里,我们证明 MSCT 能有效地改善在由 rescuing 的 SSc 老鼠的 osteopenia 损害了接受者骨头髓 MSC 的系区别。机械学地,我们证明施主 MSC 在 SSc 老鼠把 miR-151-5p 转移到接受者骨头髓 MSC 禁止 IL4R 表示,这样提高 osteogenic 区别和还原剂 adipogenic 区别的 downregulating mTOR 小径激活。而且, miR-151-5p 的全身的交货能够在 SSc 老鼠的 rescuing osteopenia,损害骨头髓 MSC,紧密的皮,和有免疫力的混乱,建议那 miR-151-5p 可以是为 SSc 治疗的一个特定的目标。我们发现在把 miRNAs 转移到接受者干细胞改善识别 MSCT 的一个以前未被认出的角色经由 rescuing 的 osteopenia 一条非编码的 RNA 小径。Chider Chen Dandan Wang Alireza Moshaverinia Dawei Liu Xiaoxing Kou Wenjing Yu Ruili Yang Lingyun Sun Songtao Shi 2017Cell Research2017,27,4:26
7The second natural gas hydrate production test in the South China Sea显示文摘Clayey silt reservoirs bearing natural gas hydrates(NGH)are considered to be the hydrate-bearing reservoirs that boast the highest reserves but tend to be the most difficult to exploit.They are proved to be exploitable by the first NGH production test conducted in the South China Sea in 2017.Based on the understanding of the first production test,the China Geological Survey determined the optimal target NGH reservoirs for production test and conducted a detailed assessment,numerical and experimental simulation,and onshore testing of the reservoirs.After that,it conducted the second offshore NGH production test in 1225 m deep Shenhu Area,South China Sea(also referred to as the second production test)from October 2019 to April 2020.During the second production test,a series of technical challenges of drilling horizontal wells in shallow soft strata in deep sea were met,including wellhead stability,directional drilling of a horizontal well,reservoir stimulation and sand control,and accurate depressurization.As a result,30 days of continuous gas production was achieved,with a cumulative gas production of 86.14×104 m3.Thus,the average daily gas production is 2.87×10^4 m^3,which is 5.57 times as much as that obtained in the first production test.Therefore,both the cumulative gas production and the daily gas production were highly improved compared to the first production test.As indicated by the monitoring results of the second production test,there was no anomaly in methane content in the seafloor,seawater,and atmosphere throughout the whole production test.This successful production test further indicates that safe and effective NGH exploitation is feasible in clayey silt NGH reservoirs.The industrialization of hydrates consists of five stages in general,namely theoretical research and simulation experiments,exploratory production test,experimental production test,productive production test,and commercial production.The second production test serves as an important step from the exploratory production test to experimental production test.Jian-liang Ye Xu-wen Qin Wen-wei Xie Hai-long Lu Bao-jin Ma Hai-jun Qiu Jin-qiang Liang Jing-an Lu Zeng-gui Kuang Cheng Lu Qian-yong Liang Shi-peng Wei Yan-jiang Yu Chunsheng Liu Bin Li Kai-xiang Shen Hao-xian Shi Qiu-ping Lu Jing Li Bei-bei Kou Gang Song Bo Li He-en Zhang Hong-feng Lu Chao Ma Yi-fei Dong Hang Bian 2020China Geology2020,3,2:22
8Diffuse axonal injury after traumatic cerebral microbleeds: an evaluation of imaging techniques显示文摘Previous neuropathological studies regarding traumatic brain injury have primarily focused on changes in large structures, for example, the clinical prognosis after cerebral contusion, intracerebral hematoma, and epidural and subdural hematoma. In fact, many smaller injuries can also lead to severe neurological disorders. For example, cerebral microbleeds result in the dysfunction of adjacent neurons and the disassociation between cortex and subcortical structures. These tiny changes cannot be adequately visualized on CT or conventional MRI. In contrast, gradient echo sequence-based susceptibility-weighted imaging is very sensitive to blood metabolites and microbleeds, and can be used to evaluate traumatic cerebral microbleeds with high sensitivity and accuracy. Cerebral microbleed can be considered as an important imaging marker for diffuse axonal injury with potential relevance for prognosis. For this reason, based on experimental and clinical studies, this study reviews the role of imaging data showing traumatic cerebral microbleeds in the evaluation of cerebral neuronal injury and neurofunctional loss.Jun Liu Zhifeng Kou Yongquan Tian 2014Neural Regeneration Research2014,9,12:21
9A systematic review of blockchain显示文摘Blockchain is considered by many to be a disruptive core technology.Although many researchers have realized the importance of blockchain,the research of blockchain is still in its infancy.Consequently,this study reviews the current academic research on blockchain,especially in the subject area of business and economics.Based on a systematic review of the literature retrieved from the Web of Science service,we explore the top-cited articles,most productive countries,and most common keywords.Additionally,we conduct a clustering analysis and identify the following five research themes:“economic benefit,”“blockchain technology,”“initial coin offerings,”“fintech revolution,”and“sharing economy.”Recommendations on future research directions and practical applications are also provided in this paper.Min Xu Xingtong Chen Gang Kou 2019Financial Innovation2019,5,1:21
10Pretreatment with a combination of ligustrazine and berberine improves cardiac function in rats with coronary microembolization显示文摘瞄准:我们证明了 ligustrazine 和 berberine 的联合在老鼠在血小板激活和煽动性的反应上生产更有效的抑制尖锐心肌的梗塞与也相比代理人独自一个。在我们评估了的这研究,在一只老鼠的 ligustrazine 和 berberine 的联合的有益的效果冠的 microembolization (CME ) 为 .Methods 建模:SD 老鼠与 ligustrazine, berberine, ligustrazine+berberine,或 clopidogrel 被对待 2 个星期。当处理完成了时, CME 被钠 laurate 的注射导致进左室,当妨碍上升主动脉时。所有老鼠为血液动力学的大小被把管子插进。血样品为生物化学的分析,流动 cytometry,和 ELISA 被收集。心纸巾为组织病理学说和随后的蛋白质 analyses.Results 被孤立:有 ligustrazine 的联合的预告的处理(27 mg· kg −1·d−1) 和 berberine (90 mg· kg −1·d−1) 显著地改善了心脏的功能,和减少的心肌的坏死,煽动性的房间渗入, microthrombosis 和浆液 CK-MB 在 CME 铺平老鼠。另外,这联合显著地减少了血浆 ET-1 层次和 von Willebrand 因素,禁止的导致自动数据处理的血小板激活,和减少的 TNFα, IL-1β,在浆液的 ICAM-1 和 RANTES 层次和心纸巾。这联合的保护的效果是比 ligustrazine 或 berberine 的那些更突出的到那些积极控制 clopidogrel 独自一个,却可比较(6.75 mg· kg −1·d−1).Conclusion:ligustrazine 和 berberine 的联合显著地经由包含 antiplatelet 和反煽动性的效果的机制在老鼠 CME 模型改进了心脏的功能。Ying ZHANG Xiao-juan MA Chun-yu GUO Ming-ming WANG Na KOU Hui-min MAO Da-zhuo SHI 2016Acta Pharmacologica Sinica2016,37,4:19
11Magnetostratigraphy and Anisotropy of Magnetic Susceptibility of the Lulehe Formation in the Northeastern Qaidam Basin显示文摘The timing of onset of deposition of the Lulehe Formation is a significant factor in understanding the genesis of the Qaidam basin and the evolution of the Tibetan Plateau. Here, we describe a detailed magnetostratigraphic and magnetic fabric study of the middle and lower parts of the Lulehe Formation. A total of 234 samples were collected from 117 sites throughout a thickness of almost 460 m of fluvial and lacustrine deposits at the Xitieshan section in the northeastern Qaidam basin. Out of these sites, 94 sites yielded well-defined characteristic remanent magnetization components by stepwise thermal demagnetization and were used to establish the magnetostratigraphy of the studied section. Based on correlation with the geomagnetic polarity timescale, the studied section spans the period from 53.8 Ma to 50.7 Ma. Our results show a three-fold decrease in sedimentation rates as well as marked change in facies from braided river to delta and shore-shallow lake around 52.6 Ma, which suggests tectonic uplift of the northeastern Qaidam basin margin ridge was rapid at the onset of formation of the Qaidam basin and subsequently weakened after 52.6 Ma. The anisotropy of magnetic susceptibility results indicate that tectonic compression stress had reached the northeastern Tibetan Plateau by the early stages of Indo-Eurasian plate collision and that the direction of stress in the study area was NE-SW. Furthermore, a weakening of tectonic compression stress around 52.6 Ma is consistent with sedimentary records. The age of initial deposition of the Qaidam basin (around 53.8 Ma) was almost synchronous with that of the Qiangtang, Hoh Xil, Xining, and Lanzhou basins, which implies that stress was transferred rapidly through the Tibetan Plateau during or immediately after the onset of Indo-Eurasian collision.KE Xue JI Junliang ZHANG Kexin KOU Xiaohu SONG Bowen WANG Chaowen 2013Acta Geologica Sinica(English Edition)2013,87,2:18
12Evaluation of the Effects of Standard Rescue Procedure on Severe Trauma Treatment in China显示文摘Xiao-Feng Yin Tian-Bing Wang Pei-Xun Zhang Yu-Hui Kou Dian-Ying Zhang Kai Yu De-Cheng Lyu Mao-Zheng Liu Dong-Sheng Zhou Peng Zhang Jue-Hua Jing Wei-Wei Ge Li-Ying Cao Guo-Sheng Wang Shao-Jie Deng Weng-Hua Liu Mao Zhang Yong-An Xu Kun Zhang Bing Li Wei Wang Zhong-Li Gao Cheng-La Yi Bao-Guo Jiang 2015Chinese Medical Journal2015,,10:18
13粉防己碱抑制前列腺癌细胞迁移和侵袭并通过诱导凋亡抑制细胞增殖显示文摘粉防己碱作为一种传统的中药,在多种肿瘤细胞中呈现显著的抗肿瘤活性。然而,粉防己碱在前列腺癌细胞中的作用却知之甚少,且其作用于前列腺癌的具体机制也尚未有人阐述。为了探究粉防己碱对前列腺癌DU145和PC-3两种细胞系生长抑制、凋亡诱导、迁移和侵袭抑制等方面的作用,通过MTT实验和克隆形成实验检测其对前列腺癌细胞的生长抑制能力,采用流式细胞仪检测其对前列腺癌细胞的凋亡诱导作用。后通过Western blotting实验检测粉防己碱处理后两种前列腺癌细胞系中PARP、Caspase-3、Akt、p-Akt、Bcl-2、Bax等蛋白的表达情况。而细胞划痕实验和transwell侵袭实验则分别用来检测粉防己碱对前列腺癌细胞的迁移和侵袭能力。结果显示,粉防己碱可剂量依赖性和时间依赖性地抑制前列腺癌细胞系DU145和PC-3的生长;且经粉防己碱处理后,两种前列腺癌细胞系的细胞克隆数明显受到抑制。且粉防己碱可抑制两种前列腺癌细胞系的侵袭,并显著抑制其迁移能力。由此可知,粉防己碱对前列腺癌细胞的增殖、迁移和侵袭有显著抑制作用。另外,粉防己碱可剂量依赖性地诱导前列腺癌细胞的凋亡,且此过程是通过caspase级联反应的激活和PI3K-Akt信号通路的抑制而得以实现的。上述结果提示粉防己碱在临床中可作为前列腺癌治疗的一种潜在治疗药物。Wei Liu Bo KOU Zhen-Kun Ma Xiao-Shuang Tang Chuan Lv Min Ye Jia-Qi Chen Lei Li Xin-Yang Wang Da-Lin He 2015Asian Journal of Andrology2015,17,5:18
14Current pre-hospital traumatic brain injury management in China显示文摘BACKGROUND: Traumatic brain injury(TBI) is associated with most trauma-related deaths. Secondary brain injury is the leading cause of in-hospital deaths after traumatic brain injury. By early prevention and slowing of the initial pathophysiological mechanism of secondary brain injury, prehospital service can signifi cantly reduce case-fatality rates of TBI. In China, the incidence of TBI is increasing and the proportion of severe TBI is much higher than that in other countries. The objective of this paper is to review the pre-hospital management of TBI in China.DATA SOURCES: A literature search was conducted in January 2014 using the China National Knowledge Infrastructure(CNKI). Articles on the assessment and treatment of TBI in pre-hospital settings practiced by Chinese doctors were identified. The information on the assessment and treatment of hypoxemia, hypotension, and brain herniation was extracted from the identifi ed articles.RESULTS: Of the 471 articles identified, 65 met the selection criteria. The existing literature indicated that current practices of pre-hospital TBI management in China were sub-optimal and varied considerably across different regions.CONCLUSION: Since pre-hospital care is the weakest part of Chinese emergency care, appropriate training programs on pre-hospital TBI management are urgently needed in China.Kou Kou iang-yu Hou Jian-dong Sun Kevin Chu 2014World Journal of Emergency Medicine2014,5,4:18
15Pollution characteristics of ambient PM_(2.5)-bound PAHs and NPAHs in a typical winter time period in Taiyuan显示文摘The pollution characteristics of ambient fine particulate matter(PM2.5) containing polycyclic aromatic hydrocarbons(PAHs) and nitrated PAHs(NPAHs) in samples collected during a typical winter time period in Taiyuan of China were investigated.The obtained results revealed that the mean mass concentrations of PM2.5,SPAHs(sum of 16 PAHs) and SNPAHs(sum of 3 NPAHs) on PM2.5were161.4 mg/m3,119.8 ng/m3and 0.446 ng/m3,respectively.Diagnostic ratios of PAHs and NPAHs implied that coal consumption might be the main source of the PM2.5pollution.The measured PM2.5mass concentrations,BaP equivalent toxicity(28.632 ng/m3) and individual carcinogenicity index(3.14 10 5) were much higher than those of the recommended safety standards.Rui-Jin Li Xiao-Jing Kou Hong Geng Chuan Dong Zong-Wei Cai 2014Chinese Chemical Letters2014,25,5:17
16Circulating apoptotic bodies maintain mesenchymal stem cell homeostasis and ameliorate osteopenia via transferring multiple cellular factors显示文摘Dawei Liu Xiaoxing Kou Chider Chen Shiyu Liu Yao Liu Wenjing Yu Tingting Yu Ruili Yang Runci Wang Yanheng Zhou Songtao Shi 2018Cell Research2018,28,9:17
17Ge-Gen Decoction attenuates oxytocin-induced uterine contraction and writhing response: potential application in primary dysmenorrhea therapy显示文摘The uterine tetanic contraction and uterine artery blood flow reduction are possible reasons for primary dysmenorrhea(PD). In the present study, we aimed to evaluate the uterine relaxant effect and the influence on uterine artery blood velocity of Ge-Gen Decoction(GGD), a well-known Chinese herbal formula. In female ICR mice, uterine contraction was induced by oxytocin exposure following estradiol benzoate pretreatment, and the uterine artery blood velocity was detected by Doppler ultrasound. Histopathological examination of the uterine tissue samples were performed by H&E staining. Ex vivo studies demonstrated that oxytocin, posterior pituitary, or acetylcholine induced contractions in isolated mouse uterus. GGD inhibited both spontaneous and stimulated contractions. In vivo study demonstrated that GGD significantly reduced oxytocin-induced writhing responses with a maximal inhibition of 87%. Further study demonstrated that GGD normalized oxytocin-induced abnormalities of prostaglandins F_2 alpha(PGF_(2α)) and Ca^(2+) in mice. In addition, injection of oxytocin induced a decrease in uterine artery blood flow velocity. Pretreatment with GGD reversed the oxytocin response on blood flow velocity. Histopathological examination showed pretreatment with GGD alleviated inflammation and edema in the uterus when compared with the model group. Both ex vivo and in vivo results indicated that GGD possessed a significant spasmolytic effect on uterine tetanic contraction as well as improvement on uterine artery blood velocity which may involve PGF_(2α) and Ca^(2+) signaling, suggesting that GGD may have a clinic potential in PD therapy.YANG Lu CHAI Cheng-Zhi YUE Xin-Yi YAN Yan KOU Jun-Ping CAO Zheng-Yu YU Bo-Yang 2016Chinese Journal of Natural Medicines2016,14,2:17
18Study of the expressions of p53 and bcl-2 genes, the telomerase activity and apoptosis in GIST patients显示文摘AIM: To explore the relationship between clinicobiological behavior and the expression levels of telomerase activity, apoptosis, p53 gene and bcl-2 gene in gastrointestinal stromal tumors (GISTs). METHODS: The intensity of telomerase activity, apoptosis, p 53 and bcl -2 expression in GISTs were detected by telomeric repeat amplification protocol, in situ end-labeling technique, and immunohistochemistry, respectively. RESULTS: The positive rates of telomerase activity of malignant GIST, potential malignant GIST and benign GIST were 85% (17/20), 22.8% (2/9) and 0 (0/9), respectively. The apoptosis indices of malignant GIST, potential malignant GIST, and benign GIST were 11.7 ± 5.4, 30.2 ± 5.6 and 45.2 ± 7.2, respectively. The intensity of telomerase activity and apoptosis were related to the biological characteristics of GISTs (85% vs 22.8%, 0, 0; P < 0.01 or 11.7 ± 5.4 vs 30.2 ± 5.6, 45.2 ± 7.2, 72.1 ± 9.3; P < 0.05). The intensity of telomerase activity was negatively correlated with cellular apoptosis (22.9 ± 8.4 vs 9.5 ± 5.7, P < 0.01). The intensity of telomerase activity was positively correlated with p53, bcl-2 expression (40.0% vs 78.9%, 40.0% vs 84.2%; P < 0.05). CONCLUSION: The detection of telomerase activity, apoptosis and its control genes in GIST will be helpful for the discrimination of the malignant and benign GIST and evaluation of the prognosis.Qiang wang You-Wei Kou 2007World Journal of Gastroenterology2007,13,18:16
19Ustilaginoidea virens: A Fungus Infects Rice Flower and Threats World Rice Production显示文摘Rice false smut disease, which is caused by the fungus Ustilaginoidea virens, is currently one of the most devastating rice fungal diseases in the world. Rice false smut disease not only causes severe yield loss and grain quality reduction, but also threatens food safety due to its production of mycotoxins. In this review, the most recent progresses regarding the life cycle, infection processes, genome and genetic diversity, pathogenic gene and disease resistance in rice were summarized in order to provide theoretical basis for the control of U. virens. We also proposed some future directions and key questions that need to be addressed for a better understanding of the molecular mechanism that leads to rice false smut disease and the prospects for sustainable control of rice false smut.QIU Jiehua MENG Shuai DENG Yizhen HUANG Shiwen KOU Yanjun 2019Rice science2019,26,4:16
20Tissue engineering for the repair of peripheral nerve injury显示文摘Peripheral nerve injury is a common clinical problem and affects the quality of life of patients. Traditional restoration methods are not satisfactory. Researchers increasingly focus on the field of tissue engineering. The three key points in establishing a tissue engineering material are the biological scaffold material, the seed cells and various growth factors. Understanding the type of nerve injury, the construction of scaffold and the process of repair are necessary to solve peripheral nerve injury and promote its regeneration. This review describes the categories of peripheral nerve injury, fundamental research of peripheral nervous tissue engineering and clinical research on peripheral nerve scaffold material, and paves a way for related research and the use of conduits in clinical practice.Pei-Xun Zhang Na Han Yu-Hui Kou Qing-Tang Zhu Xiao-Lin Liu Da-Ping Quan Jian-Guo Chen Bao-Guo Jiang 2019Neural Regeneration Research2019,14,1:15
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