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2586篇 您的检索式:作者名="Chu Chen"
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1Sodium oligomannate therapeutically remodels gut microbiota and suppresses gut bacterial amino acids-shaped neuroinflammation to inhibit Alzheimer's disease progression显示文摘Recently,increasing evidence has suggested the association between gut dysbiosis and Alzheimer's disease(AD)progression,yet the role of gut microbiota in AD pathogenesis remains obscure.Herein,we provide a potential mechanistic link between gut microbiota dysbiosis and neuroinflammation in AD progression.Using AD mouse models,we discovered that,during AD progression,the alteration of gut microbiota composition leads to the peripheral accumulation of phenylalanine and isoleucine,which stimulates the differentiation and proliferation of pro-inflammatory T helper 1(Thl)cells.The brain-infiltrated peripheral Th1 immune cells are associated with the Ml microglia aaivation,contributing to AD-associated neuroinflammation.Importantly,the elevation of phenylalanine and isoleucine concentrations and the increase of Th1 cell frequency in the blood were also observed in two small independent cohorts of patients with mild cognitive impairment(MCI)due to AD.Furthermore,GV-971,a sodium oligomannate that has demonstrated solid and consistent cognition improvement in a phase 3 clinical trial in China,suppresses gut dysbiosis and the associated phenylalanine/isoleucine accumulation,harnesses neuroinflammation and reverses the cognition impairment.Together,our findings highlight the role of gut dysbiosis-promoted neuroinflammation in AD progression and suggest a novel strategy for AD therapy by remodelling the gut microbiota.Xinyi Wang Guangqiang Sun Teng Feng Jing Zhang Xun Huang Tao Wang Zuoquan Xie Xingkun Chu Jun Yang Huan Wang Shuaishuai Chang Yanxue Gong Lingfei Ruan Guanqun Zhang Siyuan Yan Wen Lian Chen Du Dabing Yang Qingli Zhang Feifei Lin Jia Liu Haiyan Zhang Changrong Ge Shifu Xiao Jian Ding Meiyu Geng 2019Cell Research2019,29,10:192
2OsWRKY03, a rice transcriptional activator that functions in defense signaling pathway upstream of OsNPR1显示文摘WRKY family proteins are a class of plant specific transcription factors that involve in many stress response pathways. It has been shown that one Arabidopsis WRKY protein, AtWRKY29/22, is activated by MAP kinase signaling cascade and confers resistance to both bacterial and fungal pathogens. However, little is known about the biological roles of WRKY proteins in rice. In this study, we investigated the expression patterns of rice AtWRKY29/22 homolog, OsWRKY03, under different conditions, and also its possible role involved in plant defense. Our results showed that OsWRKY03 was up-regulated by several defense signaling molecules or different treatments. Further analysis revealed that the expres- sion of OsWRKY03 was light dependent. Transcriptional activation activity of OsWRKY03 was also demonstrated by yeast functional assay. Transient expression of OsWRKY03-GFP fusion protein in onion epidermis cells showed that OsWRKY03 was a nuclear localized protein. OsNPR1 as well as several other pathogenesis-related genes, such as OsPR1b, phenylalanine ammonia-lyase (ZB8) and peroxidase (POX22.3), were induced in OsWRKY03-overexpressing transgenic plants. These results indicated that OsWRKY03 is located upstream of OsNPR1 as a transcriptional activator in salicylic acid (SA)-dependent or jasmonic acid (JA)-dependent defense signaling cascades.Xiao Qiang LIU Xian Quan BAI Qian QIAN Xiu Jie WANG Ming Sheng CHEN Cheng Cai CHU 2005Cell Research2005,15,8:55
3Rice DENSE AND ERECT PANICLE 2 is essential for determining panicle outgrowth and elongation显示文摘包括谷物尺寸和圆锥花序形态学,圆锥花序的建筑学直接决定谷物产量。圆锥花序直立,为在中国的北部分完成理想的植物建筑学被选择,引起了米饭 breeders 的增加的注意。这里,稠密、直立的圆锥花序 2 (dep2 ) 异种,显示出稠密、直立的圆锥花序显型,被识别。没有任何已知的功能的领域, DEP2 编码植物特定的蛋白质。表示介绍 DEP2 表明它高度在年轻纸巾被表示,与在年轻圆锥花序的大多数丰富。词法并且表示分析显示在 DEP2 的那个变化主要影响脊柱和主要、第二等的分支的快速的延伸,但是不损害圆锥花序 primordia 的开始或形成。进一步的分析建议在 dep2 的圆锥花序长度的减少被一个缺点在圆锥花序的指数的延伸期间在房间增长引起。尽管有在 dep2 异种的一种更紧缩的植物类型,在谷物生产的重要改变都没在野类型和 dep2 异种之间被发现。因此, DEP2 的学习不仅加强我们圆锥花序建筑学的分子的基因基础的理解而且为米饭繁殖有重要含意。Feng Li Wenbo Liu Jiuyou Tang Jinfeng Chen Hongning Tong Bin Hu Chunlai Li Jun Fang Mingsheng Chen Chengcai Chu 2010Cell Research2010,20,7:51
4Eosinophilic gastroenteritis: Clinical experience with 15 patients显示文摘AIM: To evaluate the clinic features of eosinophilicgastroenteritis and to examine the diagnosis, treatment,long-term outcome of this disease.METHODS: Charts with a diagnosis of eosinophilicgastroenteritis from 1984 to 2002 at Mackay Memorial Hospital were reviewed retrospectively. There were 15 patients diagnosed with eosinophilic gastroenteritis. The diagnosis was established in 13 by histologic evaluation of endoscopic biopsy or operative specimen and in 2 by radiologic imaging and the presence of eosinophilic ascites.RESULTS: All the patients had gastrointestinal symptoms and 12 (80 %) had hypereosinophilia (absolute eosinophil count 1 008 to 31 360/cm3). The most common symptoms were abdominal pain and diarrhea. Five of the 15 patients had a history of allergy. Seven patients had involvement of the mucosa, 2 of muscularis, and 6 of subserosa. One with a history of seafood allergy was successfully treated with an elimination diet. Another patient improved spontaneously after fasted for several days. The remaining 13 patients were treated with oral prednisolone, 10 to 40 mg/day initially,which was then tapered. The symptoms in all the patients subsided within two weeks. Eleven of the 15 patients were followed up for more than 12 months (12 to 104 months,mean 48.7), of whom 5 had relapses after discontinuing steroids (13 episodes). Two of these patients required longterm maintenance oral prednisolone (5 to 10 mg/day).CONCLUSION: Eosinophilic gastroenteritis is a rare condition of unclear etiology characterized by relapses and remissions. Short courses of corticosteroids are the mainstay of treatment, although some patients with relapsing disease require long-term low-dose steroids.Ming-Jen Chen Cheng-Hsin Chu Shee-Chan Lin Shou-Chuan Shih Tsang-En Wang 2003World Journal of Gastroenterology2003,9,12:37
5Nrf2 pathway activation contributes to anti-fibrosis effects of ginsenoside Rg1 in a rat model of alcohol- and CCl4-induced hepatic fibrosis显示文摘Jian-ping LI Yan GAO Shi-feng CHU Zhao ZHANG Cong-yuan XIA Zheng MOU Xiu-yun SONG Wen-bin HE Xiao-feng GUO Nai-hong CHEN 2014Acta Pharmacologica Sinica2014,35,8:31
6Guidelines on multidisciplinary approaches for the prevention and management of diabetic foot disease(2020 edition)显示文摘In recent years,as living standards have continued to improve,the number of diabetes patients in China,along with the incidence of complications associated with the disease,has been increasing.Among these complications,diabetic foot disease is one of the main causes of disability and death in diabetic patients.Due to the differences in economy,culture,religion and level of medical care available across different regions,preventive and treatment methods and curative results for diabetic foot vary greatly.In multidisciplinary models built around diabetic foot,the timely assessment and diagnosis of wounds and appropriate methods of prevention and treatment with internal and external surgery are key to clinical practice for this pathology.In 2019,under the leadership of the Jiangsu Medical Association and Chinese Diabetes Society,the writing group for the Guidelines on multidisciplinary approaches for the prevention and management of diabetic foot disease(2020 edition)was established with the participation of scholars from the specialist areas of endocrinology,burn injury,vascular surgery,orthopedics,foot and ankle surgery and cardiology.Drawing lessons from diabetic foot guidelines from other countries,this guide analyses clinical practices for diabetic foot,queries the theoretical basis and grades and gives recommendations based on the characteristics of the pathology in China.This paper begins with assessments and diagnoses of diabetic foot,then describes treatments for diabetic foot in detail,and ends with protections for high-risk feet and the prevention of ulcers.This manuscript covers the disciplines of internal medicine,surgical,nursing and rehabilitation and describes a total of 50 recommendations that we hope will provide procedures and protocols for clinicians dealing with diabetic foot.Aiping Wang Guozhong Lv Xingbo Cheng Xianghua Ma Wei Wang Jianchao Gui JiHu Meng Lu Guoping Chu Jin’an Chen Hao Zhang Yiqiu Jiang Yuedong Chen Wengbo Yang Lin Jiang Houfa Geng Rendong Zheng Yihui Li Wei Feng Boey Johnson Wenjuan Wang Dalong Zhu Yin Hu 2020Burns & Trauma2020,8,1:34
7Ginsenoside Rgl protects against ischemic/reperfusioninduced neuronal injury through miR-144/Nrf2/ARE pathway显示文摘Ginsenoside Rg1 (Rg1),a saponin extracted from Panax ginseng,has been well documented to be effective against ischemic/ reperfusion (I/R)neuronal injury.However,the underlying mechanisms remain obscure.In the present study,we investigated the roles of Nrf2 and miR-144 in the protective effects of Rgl against I/R-induced neuronal injury.In OGD/R-treated PC12 cells,Rgl (0.01-1 μmol/L)dose-dependently attenuated the cell injury accompanied by prolonging nuclear accumulation of Nrf2,enhancing the transcriptional activity of Nrf2,as well as promoting the expression of ARE-target genes.The activation of the Nrf2/ARE pathway by Rgl was independent of disassociation with Keapl,but resulted from post-translational regulations.Knockdown of Nrf2 abolished all the protective changes of Rgl in OG-D/R-treated PC12 cells.Furthermore,Rgl treatment significantly decreased the expression of miR-144,which downregulated Nrf2 production by targeting its 3'-untranlated region after OGD/R.Knockdown of Nrf2 had no effect on the expression of miR-144,suggesting that miR-144 was an upstream regulator of Nrf2.We revealed that there was a direct binding between Nrf2 and miR-144 in PC12 cells.Application of anti-miR-144 occluded the activation of the Nrf2/ ARE pathway by Rgl in OGD/R-treated PC12 cells.In tMCAO rats,administration of Rgl (20 mg/kg).significantly alleviated ischemic injury,and activated Nff2/ARE pathway.The protective effects of Rgl were abolished by injecting of AAV-HIF-miR-144-shRNA into the predicted ischemic penumbra.In conclusion,our results demonstrate that Rgl alleviates oxidative,stress after I/R through inhibiting miR-144 activity and subsequently promoting the Nrf2/ARE pathway at the post-translational-level.Shi-feng Chu Zhao Zhang Xin Zhou Wen-bin He Chen Chen Piao Luo Dan-dan Liu Qi-di Ai Hai-fan Gong Zhen-zhen Wang Hong-shuo Sun Zhong-ping Feng Nai-hong Chen 2019Acta Pharmacologica Sinica2019,40,1:30
8A poor performance in comprehensive geriatric assessment is associated with increased fall risk in elders with hypertension: a cross-sectional study显示文摘BackgroundFall 和严肃的秋天损害为长辈成为了一颗主要健康担心。包括血压和反高血压的药申请的许多因素作为秋天的危险被报导。这研究的目的 342 个老高血压病人是决定年龄是否联系了与 hypertension.MethodsA 在老病人与增加的秋天风险联系的全身的功能的衰落全部的(年龄 79.5 ±6.7 年,男性 63.8%) 被招募到学习。全面衰老老人评价(CGA ) 包括关于每日的生活的活动(ADL ) 的大小,营养,认知,消沉,药方药的数字和临床的诊断的数字,被进行评估每个参加者的物理、心理的地位。秋天风险被莫尔斯秋天规模评估, Tinetti 性能面向的活动性评价(POMA ) 和最近的年里的秋天的历史。参加者根据 CGA 分数被组织进 tertiles。在 CGA 和秋天风险之间的关联与更高的 CGA 通过社会科学统计套装软体 18.0 .ResultsParticipants 被分析分数是可能的更旧,一个更低的身体团索引(BMI ) ,和心血管的疾病,长期的妨碍的肺的疾病(COPD ) ,脑血管的疾病和 osteoarthropathia 的更高的流行。在 CGA 的更高的 tertile 的参加者在更低的 tertile 比那些获得秋天风险的得到的增加的流行(P <0.01 T3 对 T1, P <0.01 T3 对 T2 ) 。关联分析和回归分析显示出在 CGA 和莫尔斯秋天规模之间的重要协会(P <0.001 ) ,以及 CGA 和 POMA (P <0.001 ) 。同时, CGA 部件也与增加秋天风险显示出合作关系。在调整年龄, BMI, benzodiazepine 使用,心血管的疾病,脑血管的疾病, COPD 和 osteoarthropathia 以后,最近的年和升起的莫尔斯秋天规模里的秋天的两历史显著地与 ADL 缺陷被联系(或:2.748, 95%CI:1.598-4.725 ) ,(或:3.310, 95%CI:1.893-5.788 ) 。减少的 Tinetti POMA 分数与微型心理的州的检查(MMSE ) 被联系(或:4.035, 95%CI:2.100-7.751 ) , ADL (或:2.380, 95%CI:1.357 − 4.175 ) 并且弄短的 MNA 形式(MNA-SF ) 缺陷(或:2.692, 95%CI:1.147 − 6.319 ).ConclusionsIn 有高血压的老成年人,损害了物理、心理的功能与增加的秋天被联系风险。进一步的学习被要求为协会和有效干预调查可能的调停人。Jiao-Jiao CHU Xu-Jiao CHEN Shan-Shan SHEN Xue-Feng ZHANG Ling-Yan CHEN Jing-Mei ZHANG Jing HE Jun-Feng ZHAO 2015Journal of Geriatric Cardiology2015,12,2:29
9Effect of Shexiang Tongxin Dropping Pills(麝香通心滴丸) on the Immediate Blood Flow of Patients with Coronary Slow Flow显示文摘Objective: To observe the immediate effect and safety of Shexiang Tongxin dropping pills(麝香通心滴丸, STDP) on patients with coronary slow flow(CSF), and furthermore, to explore new evidence for the use of Chinese medicine in treating ischemic chest pain. Methods: Coronary angiography(CAG) with corrected thrombolysis in myocardial infarction(TIMI) frame count(CTFC) was applied(collected at 30 frames/s). The treatment group included 22 CSF patients, while the control group included 22 individuals with normal coronary?ow. CSF patients were given 4 STDP through sublingual administration, and CAG was performed 5 min after the medication. The immediate blood ?ow frame count, blood pressure, and heart rate of patients before and after the use of STDP were compared. The liver and kidney functions of patients were examined before and after treatments. Results: There was a signi?cant difference in CTFC between groups(P<0.05). The average CTFC values of the vessels with slow blood ?ow in CSF patients were, respectively, 49.98±10.01 and 40.42±11.33 before and after the treatment with STDP, a 19.13% improvement. The CTFC values(frame/s) measured before and after treatment at the left anterior descending coronary artery, left circumflex artery, and right coronary artery were, respectively, 48.00±13.32 and 41.80±15.38, 59.00±4.69 and 50.00±9.04, and 51.90±8.40 and40.09±10.46, giving 12.92%, 15.25%, and 22.76% improvements, respectively. The CTFC values of vessels with slow ?ow before treatment were signi?cantly decreased after treatment(P<0.05). There were no apparent changes in the heart rate, blood pressure, or liver or kidney function of CSF patients after treatment with STDP(all P>0.05). Conclusions: The immediate effect of STDP in treating CSF patients was apparent. This medication could signi?cantly improve coronary ?ow without affecting blood pressure or heart rate. Our ?ndings support the potential of Chinese medicine to treat ischemic chest pain.WANG Sheng-huang CHU Lin XU Zhao ZHOU Hong-lin CHEN Jiang-fei NING Huang-fu 2019Chinese Journal of Integrative Medicine2019,0,5:25
10Late Mesozoic extensional tectonics of the Liaodong Peninsula massif:Response of crust to continental lithosphere destruction of the North China Craton显示文摘Unlike most Precambrian cratons that have thick sub-continental lithospheric roots,the Archean lithosphere beneath the North China Craton is thin (reduced from 200 km to about 80 km),and has been replaced by a geochemically juvenile lithospheric mantle.This is a unique regional geological event,which has attracted worldwide attention.In the North China Block,Late Mesozoic extensional tectonics is evident by low-angle detachment faults,syntectonic plutons bounded by ductile faults,metamorphic core complexes (MCC) and widespread Jurassic to Cretaceous half-grabens filled by continental terrigenous deposits and volcanic rocks.At a regional scale,these structures share the same NW-SE extensional direction,while maintaining their own individual kinematics.In other words,the MCC feature a top-to-the-NW sense of shear,and syntectonic plutons are typified by a top-to-the-SE shearing deformations.Geochronological results indicate that the extensional structures were formed between 130-120 Ma.These extensional events lead to magmatic rock emplacement,distributed at the footwall of the detachment faults.Two different exhumation stages can be identified based on regional structural and magmatic interpretation:a Jurassic slow or negligible exhumation and a Cretaceous fast one assisted by normal faulting.These two cooling stages correspond to distinct geodynamic processes that occurred during the Jurassic and Cretaceous.Extensional tectonics appear to have been insignificant before the Early Cretaceous,and the process may be demonstrated by partial melting of the crust.The second stage,dominated by an extensional regime,developed after ca 120 Ma,and is tentatively correlated with crustal extension caused by lithospheric removal of the North China Craton.LIN Wei WANG QingChen WANG Jun WANG Fei CHU Yang CHEN Ke 2011Science China Earth Sciences2011,54,6:24
11Outcome of simple use of mechanical lithotripsy of difficult common bile duct stones显示文摘AIM: The usual bile duct stone may be removed by means of Dormia basket or balloon catheter, and results are quite good. However, the degree of difficulty is increased when stones are larger. Studies on the subject reported many cases where mechanical lithotripsy is combined with a second technique, e.g. electrohydraulic lithotripsy (EHL),where stones are crushed using baby-mother scope electric shock. The extracorporeal shock-wave lithotripsy (ESWL)or laser lithotripsy also yields an excellent success rate of greater than 90%. However, the equipment for these techniques are very expensive; hence we opted for the simple mechanical lithotripsy and evaluated its performance.METHODS: During the period from August 1996 to Decemberz 2002, Mackay Memorial Hospital treated 304 patients suffering from difficult bile duct stones (stone >1.5 cm or stones that could not be removed by the ordinary Dormia basket or balloon catheter). These patients underwent endoscopic papillotomy (EPT) procedure, and stones were removed by means of the Olympus BML-4Q lithotripsy. A follow-up was conducted on the post-treatment conditions and complications of the patients.RESULTS: Out of the 304 patients, bile duct stones were successfully removed from 272 patients, a success rate of about 90%. The procedure failed in 32 patients, for whom surgery was needed. Out of the 272 successfully treated patients, 8 developed cholangitis, 21 developed pancreatitis,and 10 patients had delayed bleeding, and no patient died.Among these 272 successful removal cases, successful bile duct stone removal was achieved after the first lithotripsy in 211 patients, whereas 61 patients underwent multiple sessions of lithotripsy. As for the 61 patients that underwent multiple sessions of mechanical lithotripsy, 6 (9.8%) had post-procedure cholangitis, 12 (19.6%) had pancreatitis,and 9 patients (14.7%) had delayed bleeding. Compared with the 211 patients undergoing a single session of mechanical lithotripsy, 3 (1.4%) had cholangitis, 1 (0.4%)had delayed bleeding, and 7 patients (3.3%) had pancreatitis.Statistical deviation was present in post-procedure cholangitis,delayed bleeding, and pancreatitis of both groups.CONCLUSION: Mechanical bile stone lithotripsy on difficult bile duct stones could produce around 90% successful rate.Moreover, complications are minimal. This finding further confirms the significance of mechanical lithotripsy in the treatment of patients with difficult bile duct stones.Wen-Hsiung Chang Cheng-Hsin Chu Tsang-En Wang Ming-Jen Chen Ching-Chung Lin 2005World Journal of Gastroenterology2005,11,4:22
12Effect of particle size on the microstructure and thermal conductivity of Al/diamond composites prepared by spark plasma sintering显示文摘Spark plasma sintering (SPS) was used to fabricate Al/diamond composites. The influence of diamond particle size on the microstructure and thermal conductivity (TC) of composites was investigated by combining experimental results with model prediction. The results show that both composites with 40 μm particles and 70 μm particles exhibit high density and good TC, and the composite with 70 μm particles indicates an excellent TC of 325 W·m-1·K-1. Their TCs lay between the theoretical estimated bounds. In contrast, the composite with 100 μm particles demonstrates low density as well as poor TC due to its high porosity and weak interfacial bonding. Its TC is even considerably less than the lower bound of the predicted value. Using larger diamond particles can further enhance thermal conductive performance only based on the premise that highly dense composites of strong interfacial bonding can be obtained.CHU Ke JIA Chengchang LIANG Xuebing CHEN Hui GAO Wenji 2009Rare Metals2009,28,6:22
13A Strigolactone Biosynthesis Gene Contributed to the Green Revolution in Rice显示文摘Plant architecture is a complex agronomic trait and a major factor of crop yield,which is affected by several important hormones.Strigolactones(SLs)are identified as a new class hormoneinhibiting branching in many plant species and have been shown to be involved in various developmental processes.Genetical and chemical modulation of the SL pathway is recognized as a promising approach to modify plant architecture.However,whether and how the genes involved in the SL pathway could be utilized in breeding still remain elusive.Here,we demonstrate that a partial loss-of-function allele of the SL biosynthesis gene,HIGH TILLERING AND DWARF 1/DWARF17(HTD1/D17),which encodes CAROTENOID CLEAVAGE DIOXYGENASE 7(CCD7),increases tiller number and improves grain yield in rice.We found that the HTD1 gene had been widely utilized and co-selected with Semidwarf 1(SD1),both contributing to the improvement of plant architecture in modern rice varieties since the Green Revolution in the 1960s.Understanding how phytohormone pathway genes regulate plant architecture and how they have been utilized and selected in breeding will lay the foundation for developing the rational approaches toward improving crop yield.Yuexing Wang Lianguang Shang Hong Yu Longjun Zeng Jiang Hu Shen Ni Yuchun Rao Sanfeng Li Jinfang Chu Xiangbing Meng Lei Wang Ping Hu Jijun Yan Shujing Kang Minghao Qu Hai Lin Tao Wang Quan Wang Xingming Hu Hongqi Chen Bing Wang Zhenyu Gao Longbiao Guo Dali Zeng Xudong Zhu Guosheng Xiong Jiayang Li Qian Qian 2020Molecular Plant2020,13,6:23
14Effects of Lactobacillus plantarum on gut barrier function in experimental obstructive jaundice显示文摘AIM:To investigate the mechanisms of Lactobacillus plantarum(L.plantarum)action on gut barrier in preoperative and postoperative experimental obstructive jaundice in rats.METHODS:Forty rats were randomly divided into groups of sham-operation,bile duct ligation(BDL),BDL +L.plantarum,BDL+internal biliary drainage(IBD),and BDL+IBD+L.plantarum.Ten days after L.plantarum administration,blood and ileal samples were collected from the rats for morphological examination,and intestinal barrier function,liver function,intestinal oxidative stress and protein kinase C(PKC)activity measurement.The distribution and expression of the PKC and tight junction(TJ)proteins,such as occludin,zonula occludens-1,claudin-1,claudin-4,junction adhesion molecule-A and F-actin,were examined by confocal laser scanning microscopy,immunohistochemistry,Western blotting,real-time fluorescent quantitative polymerase chain reaction assay.RESULTS:L.plantarum administration substantially restored gut barrier,decreased enterocyte apoptosis,improved intestinal oxidative stress,promoted the activity and expression of protein kinase(BDL vs BDL+L.plantarum,0.295±0.007 vs 0.349±0.003,P<0.05;BDL+IBD vs BDL+IBD+L.plantarum,0.407±0.046 vs 0.465±0.135,P<0.05),and particularly enhanced the expression and phosphorylation of TJ proteins in the experimental obstructive jaundice(BDL vs BDL+L.plantarum,0.266±0.118 vs 0.326±0.009,P<0.05).The protective effect of L.plantarum was more prominent after internal biliary drainage(BDL+IBD vs BDL +IBD+L.plantarum,0.415±0.105 vs 0.494±0.145,P<0.05).CONCLUSION:L.plantarum can decrease intestinal epithelial cell apoptosis,reduce oxidative stress,and prevent TJ disruption in biliary obstruction by activating the PKC pathway.Yu-Kun Zhou Huan-Long Qin Ming Zhang Tong-Yi Shen Hong-Qi Chen Yan-Lei Ma Zhao-Xin Chu Peng Zhang Zhi-Hua Liu 2012World Journal of Gastroenterology2012,18,30:21
15Climate and litter C/N ratio constrain soil organic carbon accumulation显示文摘Soil organic carbon(SOC) plays critical roles in stabilizing atmospheric CO2 concentration, but the mechanistic controls on the amount and distribution of SOC on global scales are not well understood. In turn, this has hampered the ability to model global C budgets and to find measures to mitigate climate change. Here, based on the data from a large field survey campaign with 2600 plots across China’s forest ecosystems and a global collection of published data from forested land, we find that a low litter carbon-to-nitrogen ratio(C/N) and high wetness index(P/PET, precipitation-to-potentialevapotranspiration ratio) are the two factors that promote SOC accumulation, with only minor contributions of litter quantity and soil texture. The field survey data demonstrated that high plant diversity decreased litter C/N and thus indirectly promoted SOC accumulation by increasing the litter quality. We conclude that any changes in plant-community composition, plant-species richness and environmental factors that can reduce the litter C/N ratio, or climatic changes that increase wetness index, may promote SOC accumulation. The study provides a guideline for modeling the carbon cycle of various ecosystem scales and formulates the principle for land-based actions for mitigating the rising atmospheric CO2 concentration.Guoyi Zhou Shan Xu Philippe Ciais Stefano Manzoni Jingyun Fang Guirui Yu Xuli Tang Ping Zhou Wantong Wang Junhua Yan Gengxu Wang Keping Ma Shenggong Li Sheng Du Shijie Han Youxin Ma Deqiang Zhang Juxiu Liu Shizhong Liu Guowei Chu Qianmei Zhang Yuelin Li Wenjuan Huang Hai Ren Xiankai Lu Xiuzhi Chen 2019National Science Review2019,6,4:21
16The Impacts of Maternal Gestational Diabetes Mellitus (GDM) on Fetal Hearts显示文摘Objective To evaluate the fetal cardiac function in gestational diabetes mellitus (GDM) pregnancies under different maternal glycemic controls.Methods Forty four GDM mothers received 78 fetal echocardiographic evaluations at three gestational periods (<28,28-34 and ≥34 weeks) and were divided into poorly-(DM1) and well-(DM2) controlled groups according to their glycemic control at examination.Seventy uncomplicated mothers were selected as controls.Parameters of fetal cardiac anatomy and function were measured and analyzed.Results GDM fetuses' cardiac ventricular walls were thicker than controls',and the differences between DM1 and DM2 were not significant except for end-diastolic left ventricular walls.In both GDM groups,the aortic flow velocities increased earlier than pulmonary artery and DM1 fetuses changed earlier than DM2 ones.GDM fetuses' left atrial shortening fraction was smaller than the controls' in the period of ≥34 weeks and negatively correlated with thicknesses of left ventricular walls and interventricular septum in DM1 fetuses (r=-0.438 and -0.506).The right ventricular diastolic function in DM1 and DM2 fetuses decreased after the period of 28-34 weeks and in the period of ≥34 weeks respectively.Tei index of both left and right ventricles increased in DM1 group after the period of<28 weeks and in DM2 group only in the period of ≥34 weeks,with no significant differences between DM1 and DM2 groups in this period.Conclusion Fetuses of GDM mothers showed cardiac function impairments.Good maternal glycemic control may delay the impairments,but cannot reduce the degree.Some cardiac changes in GDM fetuses were similar to those in pregestational diabetic pregnancies except for several parameters and their changing time.CHU Chen GUI Yong Hao PEN Yun Yun SHI Li Ye 2012Biomedical and Environmental Sciences2012,25,1:20
17The first metagenome of activated sludge from full-scale anaerobic/anoxic/oxic(A2O) nitrogen and phosphorus removal reactor using Illumina sequencing显示文摘The anaerobic/anoxic/oxic(A2O) process is globally one of the widely used biological sewage treatment processes. This is the first report of a metagenomic analysis using Illumina sequencing of full-scale A2O sludge from a municipal sewage treatment plant.With more than 530,000 clean reads from different taxa and metabolic categories, the metagenome results allow us to gain insight into the functioning of the biological community of the A2O sludge. There are 51 phyla and nearly 900 genera identified from the A2O activated sludge ecosystem. Proteobacteria, Bacteroidetes, Nitrospirae and Chloroflexi are predominant phyla in the activated sludge, suggesting that these organisms play key roles in the biodegradation processes in the A2O sewage treatment system.Nitrospira, Thauera, Dechloromonas and Ignavibacterium, which have abilities to metabolize nitrogen and aromatic compounds, are most prevalent genera. The percent of nitrogen and phosphorus metabolism in the A2O sludge is 2.72% and 1.48%, respectively. In the current A2O sludge, the proportion of Candidatus Accumulibacter is 1.37%, which is several times more than that reported in a recent study of A2O sludge. Among the four processes of nitrogen metabolism, denitrification related genes had the highest number of sequences(76.74%), followed by ammonification(15.77%), nitrogen fixation(3.88%) and nitrification(3.61%). In phylum Planctomycetes, four genera(Planctomyces, Pirellula, Gemmata and Singulisphaera) are included in the top 30 abundant genera, suggesting the key role of ANAMMOX in nitrogen metabolism in the A2O sludge.Mei Tian Fangqing Zhao Xin Shen Kahou Chu Jinfeng Wang Shuai Chen Yan Guo Hanhu Liu 2015Journal of Environmental Sciences2015,27,9:20
18Understanding the genetic and epigenetic architecture in complex network of rice flowering pathways显示文摘尽管 flowering 时间控制的分子的基础很好在长天(LD ) 内被把,种 Arabidopsis,它在短天(SD ) 内大部分仍然是未知的植物米饭。瑞斯 flowering 时间(标题日期) 是为季节改编和谷物产量的一个重要农学的特点,它被基因、环境的因素影响。在最后十年期间,作为被识别的、著名进步在探索上被取得了的成花素的性质,成花素基因表示怎么样,遗传上控制。然而,在象 FLOWERING 那样的某些关键 flowering 综合者的 Arabidopsis 表示,地点 C (FLC ) 和 FLOWERING 地点 T (英尺) 被各种各样的染色质修正 epigenetically 也调整几乎不在这个方面上在米饭被知道直到很最近。这评论在米饭 flowering 时间控制总结了基因网络和染色质修正的进展,试图给一个完全的看法基因并且在米饭 flowering 小径的复杂网络的 epigenetic 建筑学。Changhui Sun Dan Chen Jun Fang Pingrong Wang Xiaojian Deng Chengcai Chu 2014Protein & Cell2014,5,12:19
19Alkaline Intrusives at the East Foot of the Taihang-Da Hinggan Mountains:Chronology,Sr,Nd and Pb Isotopic Characteristics and Their Implications显示文摘Based on the Rb-Sr isochron dating results, this paper suggests that the alkaline intrusive belt at the east foot of the Taihang-Da Hinggan Mountains were formed between 135 and 122 Ma. And the alkaline intrusives in the north and south sections of this belt have entirely different Sr, Nd and Pb isotopic characteristics, i.e., all the rocks in the south section have positive εSr(t) and negative εNd(t) values and all those in the north have the opposite values. On the εSr(t) versus εNd(t) correlation diagram, the samples from the south are concentrated along the enriched mantle evolution trend lines and nearby, while those from the north fall along the depleted mantle trend lines and nearby. On the Pb isotope composition diagram, most of the samples from the south section fall on the mantle Pb evolution line and nearby, while those from the north lie between the Pb evolution lines of the mantle and the erogenic belt. The above-stated isotopic characteristics not only indicate that the source rocksYAN Guohan XU Baoliang MU Baolei WANG Guanyu CHANG Zhaoshan CHEN Tingli ZHAO Yongchao WANG Xiaofang ZHANG Renhu QIAO Guangsheng CHU Zhuyin 2000Acta Geologica Sinica(English Edition)2000,74,4:18
20T-2 toxin-induced apoptosis involving Fas,p53,Bcl-xL,Bcl-2,Bax and caspase-3 signaling pathways in human chondrocytes显示文摘Objective:To investigate the effects of T-2 toxin on expressions of Fas,p53,Bcl-xL,Bcl-2,Bax and caspase-3 on human chondrocytes.Methods:Human chondrocytes were treated with T-2 toxin(1~20 ng/ml)for 5 d.Fas,p53 and other apoptosis-related proteins such as Bax,Bcl-2,Bcl-xL,caspase-3 were determined by Western blot analysis and their mRNA expressions were determined by reverse transcriptase-polymerase chain reaction(RT-PCR).Results:Increases in Fas,p53 and the pro-apoptotic factor Bax protein and mRNA expressions and a decrease of the anti-apoptotic factor Bcl-xL were observed in a dose-dependent manner after exposures to 1~20 ng/ml T-2 toxin,while the expression of the anti-apoptotic factor Bcl-2 was unchanged.Meanwhile,T-2 toxin could also up-regulate the expressions of both pro-caspase-3 and caspase-3 in a dose-dependent manner.Conclusion:These data suggest a possible underlying molecular mechanism for T-2 toxin to induce the apoptosis sig- naling pathway in human chondrocytes by regulation of apoptosis-related proteins.Jing-hong CHEN Jun-ling CAO Yong-lie CHU Zhi-lun WANG Zhan-tian YANG Hong-lin WANG 2008Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2008,9,6:18
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