|
|
|
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 |
| 2 | Nitrite-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) | 2005 | Hepatobiliary & Pancreatic Diseases International2005，4，3： | 4 |
| 3 | Pyroelectric spectrum in Pb(Zr,Sn,Ti)O3 antiferroelectric- ferroelectric ceramics显示文摘The pyroelectric effect of phase transition induced with temperature in Nb-modified Pb(Zr,Sn,Ti)O3 antiferroelectric-ferroelectric ceramics is studied. Experimental results reveal that the phase transitions are accompanied with marked pyroelectric peaks, there exists the close relation between the type of phase transition and the shape of pyroelectric peak. Because of the variations of phase transition, various pyroelectric spectra result. The pyroelectric spectrum can display the polarization effect and some inferior phase transitions with temperature variations, such as antiferroelectric AFEA-AFEB or ferroelectric FEL-FEH transition, which are not detected by the conventional dielectric measurement. | Feng, YJ Xu, Z Yang, TQ Yao, X | 2000 | Chinese Science Bulletin2000，45，13： | 2 |
| 4 | Molecular basis for CENP-N recognition of CENP-A nucleosome on the human kinetochore显示文摘 | Tian Tian Xiaorun Li Yingying Liu Chengliang Wang Xing Liu Guoqiang Bi Xuan Zhang Xuebiao Yao Z Hong Zhou Jianye Zang | 2018 | Cell Research2018，28，3： | 2 |
| 5 | Surface Treatment of Aluminum by High Current Pulsed Electron Beam 显示文摘 | Hao S Z Yao S Guan J | 2001 | Current Applied Physics2001，1，23： | 1 |
| 6 | 显示文摘 | Cao Z K Li B Yao G C | 2008 | Mater Sci Eng A2008，486，： | 1 |
| 7 | Preparation and characterization of gelatin gel with a gradient structure 显示文摘 | Wang Y L Cheng G X Yao K D | 2000 | Polymer Int2000，49，12： | 1 |
| 8 | Structure stability and self-healing capability of Er2O3 in situ coating on V-4Cr4Ti in liquid lithium显示文摘 | Yao Z Y Suzuki A | 2006 | Fusion Engineering and Design2006，81，： | 1 |
| 9 | Prevalence of Chronic Ob- structive Pulmonary Disease in China A Large, Population-based Survey显示文摘 | Zhong N S Wang C Yao W Z | 2007 | Am J Respir Crit Care Med2007，176，： | 1 |
| 10 | A 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 | 2007 | International Journal of Production Econom- ics2007，107，2： | 1 |
| 11 | Leaky bucket algorithms in AFDX显示文摘 | Yao M Qiu Z Kwak K | 2009 | Electronics Letters2009，45，11： | 1 |
| 12 | Study of double layer rare earth metal conversion coating on aluminum alloy LY12显示文摘 | Yu X Cao C Yao Z | 2001 | Corrosion Science2001，43，7： | 1 |
| 13 | Large scale evolutionary optimiza-tion using cooperative coevolution显示文摘 | Yang Z Tang K Yao X | 2008 | Information Sciences2008，178，15： | 1 |
| 14 | Spatio - temporal Urban Landscape Change Analysis Using the Markov Chain Model and a Modified Genetic Algorithm 显示文摘 | Tang J Wang L Yao Z | 2007 | International Journal of Remote Sensing2007，28，15： | 1 |
| 15 | Stat4-dependent, T-bet-independent regulation of IL-10 in NK cells显示文摘 | Grant L R Yao Z J Hedrich C M | 2008 | Genes Immun2008，9，： | 1 |
| 16 | Studies of Electroless Nickel Deposits with Low Phosphorous Content显示文摘 | Zhang Y Z Yao M | | Trans IMF0，77，2： | 1 |
| 17 | The synergistic effect between erosion and corrosion in acidic slurry medium显示文摘 | ZHENG Y G YAO Z M WEI X Y | 1995 | Wear1995，，6： | 1 |
| 18 | Carbon nanotube single-electron transistors at room temperature显示文摘 | HENK W C POSTMA T T YAO Z | 2001 | Science2001，293，5527： | 1 |
| 19 | Study on electrocatalytic oxidation of L-cysteine at glassy carbon electrode by (FcM) TMA and its electrochemical kinetics显示文摘 | GAO Z N YAO H Q LIU W Y | 2005 | Electroanal2005，17，： | 1 |
| 20 | Deterministic multiuser carrier-frequency offset estimation for interleaved OFDMA uplink显示文摘 | Z Cao U Tureli Y D Yao | 2004 | IEEE Trans Commun2004，52，9： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员