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2712篇 您的检索式:作者名="YAO P"
    题名 作者 年代 出处 被引量
1笋芽顶端分生组织在竹秆横切面形态形成中的作用与机制研究显示文摘竹秆的横切面主要由表皮、皮层、维管组织、基本组织及髓腔(早期为髓组织)组成。这些组织均由笋芽茎顶端分生组织分化发育而来,且其在生长发育过程中促使了竹秆横切面形态(本文特指:竹秆横切面外轮廓形状、围度及壁-腔结构)的形成。然而,人们对于这一生长发育过程的生物学机制知之甚少。本研究利用解剖学、数学模拟等方法,对 20 种具不同秆径竹种的笋芽顶端分生组织进行了分析。研究结果发现,笋芽顶端分生组织指状形态的维持是竹子产生圆柱形竹秆的基础;在顶端分生组织细胞数目增加的同时,线性增加原体细胞数目应是竹子在演化过程中产生大径竹秆且保持规则壁-腔结构的方式。进一步通过研究一个竹壁增厚且壁-腔架构紊乱的稳定变异体———实肚竹( Phyllostachys nidularia f. farcta)发现,其笋芽顶端分生组织细胞数目减少且原体/原套细胞数比值降低使其产生了高比例的壁组分组织(指基本分生组织与肋状分生组织)与低比例的髓组织。上述 2 种组织的比例失衡,使得实肚竹笋芽在后续发育中壁组分组织随机挤入到了髓组织中,最终形成了实肚竹异常的竹秆横切面形态(竹壁多样化增厚且壁-腔结构紊乱)。此外,相对较小的顶端分生组织,使得实肚竹笋芽产生了较少的内源激素,如其生长素含量仅约为其原种篌竹的 67. 5%,各细胞分裂素含量也显著低于篌竹笋芽。转录组分析进一步发现,在实肚竹笋芽中与激素及代谢相关的功能基因呈显著下调表达。这些生理与分子变化最终导致了实肚竹竹秆矮化、秆径减小且生物量降低。本论文的研究结果为研究竹秆横切面发育提供了一个重要的视角,同时也为实肚竹厚壁茎秆的形成提出了一个合理的机制。Wang Y Sun X Ding Y Fei Z Jiao C Fan M Yao B Xin P Chu J Wei Q 王雨珺 魏强 2019世界竹藤通讯2019,17,3:5
2Nitrite-derived nitric oxide by xanthine oxidoreductase protects the liver against ischemia- reperfusion injury显示文摘It was demonstrated that xanthine oxidoreductase (XOR), during ischemia, catalyzes the formation of nitric oxide (NO) from nitrite (NO2-) and this NO2--derived NO protects the isolated perfused rat heart against the damaging effects of ischemia-reperfusion (I/R) when conventional nitric oxide synthase (NOS) -dependent NO production is impaired. Liver is one of the organs with the highest XOR concentration. This study was designed to determine whether NO2--derived NO by XOR protects liver against I/R injury in vivo. For its minute amounts and active reactivity, NO can not be detected directly in real time in vivo by this time. We have to prove the above hypothesis indirectly. METHODS:Wistar rats were pretreated with saline, NOS inhibitor L-NAME (10 mg/kg intravenously), XOR inhibitor allopurinol (1.5 mg/kg orally), L-NAME +allopurinol and NO scavenger carboxy-PTIO (0.6 mg/kg intravenously) respectively (12 animals per group). And then, they were subjected to total liver ischemia for 40 minutes followed by reperfusion. Blood samples and liver tissues were obtained for analysis after 3 hours of reperfusion. Survival was also investigated. RESULTS:Allopurinol-treated animals exhibited further increased serum alanine aminotransferase (ALT) levels and liver myeloperoxidase (MPO) activities, but further decreased liver adenosine triphosphate (ATP) stores after I/R compared to saline-treated counterparts (830.5±108.3 U/L, 56.5±11.0 U/mg protein and 1.93±0.47 μmol/g vs. 505.8± 184.2 U/L, 41.5±10.2 U/mg protein and 3.05±0.55 μmol/g respectively, P<0.01, P<0.05 and P<0.01 respectively). The hepatocyte injury was further exacerbated and the overall survival rate was significantly decreased after I/R in animals given by allopurinol compared to those pretreated by saline (P<0.05). L-NAME and allopurinol co-treated animals exhibited more severe liver injury (P<0.05 and P<0.01) and a further decreased overall survival rate (P<0.05) compared to L-NAME or allopurinol alone-treated counterparts, but they were not different from carboxy-PTIO treated animals (P>0.05). CONCLUSION:NO2--derived NO by XOR in the hypoxic and acidic environment induced by hepatic I/R protects the liver against I/R injury in vivo.Department of General Surgery ( Lu P, Wang CY and Chen DD), and Department of Radiology (Liu F), Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China Cold Spring Harbor Laboratory, New York 11724, USA ( Yao Z) General Surgery Laboratory, Union Hospital, Tongji Medical College , Huazhong University of Science and Technology, Wuhan 430022 , China (Tian Y, Zhang JH and Wu YH) 2005Hepatobiliary & Pancreatic Diseases International2005,4,3:4
3FOUR NEW GLYCOSIDES, LIGUROBUSTOSIDES A, B, C AND D FROM LIGUSTRUM ROBUSTUM显示文摘FOURNEWGLYCOSIDES,LIGUROBUSTOSIDESA,B,CANDDFROMLIGUSTRUMROBUSTUM¥JunTIAN;HongJieZHANGandHanDongSUN.(Laboratoryofphytochemistr...Tian, J Zhang, HJ Sun, HD Pan, LT Yao, P Chen, DY 1996Chinese Chemical Letters1996,7,4:3
4Validation and Scenario Analysis of a Soil Organic Carbon Model显示文摘A model developed by the authors was validated against independent data sets. The data sets were obtained from field experiments of crop residue decomposition and a 7-year soil improvement in Yixing City, Jiangsu Province. Model validation indicated that soil organic carbon dynamics can be simulated from the weather variables of temperature, sunlight and precipitation, soil clay content and bulk density, grain yield of previous crops, qualities and quantities of the added organic matter. Model simulation in general agreed with the measurements. The comparison between computed and measured resulted in correlation coefficient γ2 values of 0.9291 * * * (n = 48) and 0. 6431 * * (n = 65) for the two experiments, respectively. Model prediction under three scenarios of no additional organic matter input, with an annual incorporation of rice and wheat straw at rates of 6.75t/ha and 9.0t/ha suggested that the soil organic carbon in Wanshi Township of Yixing City would be from an initial value of 7.85g/kg in 1983 to 6.30g/kg, 11.42g/kg and 13g/kg in 2014, respectively. Consequently, total nitrogen content of the soil was predicted to be respectively 0.49g/kg,0.89g/kg and 1.01g/kg under the three scenarios.HUANG Yao, LIU Shi-Hang, SHEN Qi-rong, ZONG Liang-gang, JIANG Ding-an and HUANG Hong-guang(College of Resource and Environmental Sciences , Nanjing Agricultural University, Nanjing 210095 , P,R. China Institute of Atmospheric Physics , Chinese Academy of Sciences , Beijing 100029 , P. R . China Agricultural Bureau of Yixing City, Yixing 214209 , P.R. China ) 2002Agricultural Sciences in China2002,1,4:2
5Effet of Maotai liguor in inducing metallothioneins and on hepatic stellate cells显示文摘Cheng ML Wu J Wang HQ Xue LM Tan YZ Liu P Li CX Huang NH Yao YM Ren LZ Ye L Li L Jia ML 2001Shijie Huaren Xiaohua Zazhi2001,9,12:2
6Log-Add approximation on-line noise compensation method adopting robust decision rules for robust digits recognition 显示文摘Yao K S Bertram E Shi Fung P 2000Chinese Journal of Electronics2000,9,3:2
7Multiple dimensions of cardiopulmonary dyspnea显示文摘背景呼吸困难感觉的当前的理论假定 dyspnea.However 的一个多维的概念,它在有心肺的呼吸困难的病人的有效性一直不是 investigated.Methods 合并呼吸不快,感情方面的方面,和行为的项目的感觉经验的自发地报导的描述符的一张呼吸症状清单与气喘予 396 个病人被以,长期的妨碍的肺的疾病( COPD ),弥漫的 parenchymal 肺疾病,肺的脉管的HAN Jiang-na XIONG Chang-ming YAO Wei FANG Qiu-hong ZHU Yuan-jue CHENG Xian-sheng Karel P Van de Woestijne 2011Chinese Medical Journal2011,,20:2
8Laser(Nd:YAG) Cladding of AZ91D Magnesium Alloys with Al +Si + Al2O3显示文摘Yao J Sun G P Wang H Y 2006Journel of Alloys and Compounds2006,407,:1
9A new peritoneal carcinomatosis model in cyclosporine immunosuppressed rats 显示文摘Akhter J Yao P Johnson LA 2008Anticancer Resarch2008,28,1:1
10Application of Lade's criterion to Cam-Clay model显示文摘YAO Y P SUN D A 2000Journal of Engineering Mechanics ASCE2000,126,1:1
11A new location-inventory policy with reverse logistics applied to B2C e-markets of China显示文摘Wang Z Yao D Q Huang P 2007International Journal of Production Econom- ics2007,107,2:1
12Effect of CuO or/and V2O5 oxide additives on Bi2O3-ZnO-Ta2O5 based ceramics显示文摘Shen B Yao X Kang L P 2004Ceram Int2004,30,:1
13Remodeling of gap junctional channel function in epicardial border zone of healing canine infarcts显示文摘Yao JA Hussain W Patel P 2003Circ Res2003,92,4:1
14Application of the quadrilateral area coordinate method: A new element for Mindlin -Reissner plate 显示文摘Cen S Long Y Q Yao Z H Chiew S P 2006International Journal for Numerical Methods in Engineering2006,66,1:1
15Cost effectiveness of nurse led secondary prevention clinics for coronary heart disease in primary care :follow up of a randomised controlled trial显示文摘Raftery JP Yao GL Murchie P 2005BMJ2005,330,7493:1
16Comparison of the predictability, uniformi- ty and stability of a laser in situ keratomileusis corneal flap cre- ated with a VisuMax femtosecond Laser or a Moria microkera- tome 显示文摘Yao P Xu Y Zhou X 2011J Int Med Res2011,39,3:1
17Muhiple maternal origins of chickens : out of the Asian jungles 显示文摘LIU Y P WU G S YAO Y G 2006Mol Phylogenet Evol2006,38,:1
18Professional ethical issues and the de- velopment of professional ethical standards in counseling and clini- zal psychology in China 显示文摘Qian M Gao J Yao P 2009Ethics Behav2009,19,4:1
19Hydrogen storage properties of MgH2/SWNT composite prepared by ball milling 显示文摘Wu C Z Wang P Yao X 2006Jour- nal of Alloys and Compounds2006,420,12:1
20Determinants influencing seasonal variations of methane emissions from alpine wetlands in Zoige Plateau and their implications显示文摘Chen H Yao S P Wu N etal 2008Journal of Geophysical Research2008,113,12:1
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