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Pollen morphology of Rhododendron subgen. Tsutsusi and its systematic implications

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Journal of Systematics and Evolution 2009年第2期47卷 123-138页

作者： 1,2Yue-Jiao ZHANG 1Xiao-Feng JIN 3Bing-Yang DING 4Jing-Ping ZHU 1(school of Life & Environment Sciences,hangzhou normal university,hangzhou 310036,china) 2(College of Life Sciences,Zhejiang university,hangzhou 310012,china) 3(school of Life & Environment Sciences,Wenzhou university,Wenzhou 325027,china) 4(Center of Analysis & Measurement,Zhejiang university,hangzhou 310028,china) school of Life & Environment Sciences Hangzhou Normal University Hangzhou 310036 China College of Life Sciences Zhejiang University Hangzhou 310012 China school of Life & Environment Sciences Wenzhou University Wenzhou 325027 China Center of Analysis & Measurement Zhejiang University Hangzhou 310028 China

Eighty-four pollen samples were obtained for 80 taxa,of which,13 species and one variety are from *** Sweet,58 species and two varieties from *** Sweet,and six species from ***(***) Pojarkova,*** morphology of all samples was observed using LM and *** grains are revealed to be spheroidal and tetrahedral with tricolporate *** sizes of ***(Sweet) Pojarkova range from 37.67 μm to 61.06 μm,and the exine sculptures are more or less compactly *** sizes are significantly different between *** and *** of *** tashiroi *** *** Sleumer shows a close affinity to *** size and exine are consistent with general morphology in differentiating species in *** huadingense *** & ***,once placed as a member of ***,should be considered as a species in ***.

关键词： Ericaceae Rhododendron subgen.Tsutsusi pollen morphology tetrahedral tetrads systematic implication

Inhibitory effect of acetamide-45 on airway inflammation and phosphodiesterase 4 in allergic rats

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Acta Pharmacologica Sinica 2005年第12期26卷 1492-1496页

作者： Kai WANG~2 Hua-hao SHEN~(2,4) Jun-chun CHEN~2 Zhong CHEN~3 2 Respiratory Department,the Second Affiliated Hospital,medical school of Zhejiang university,hangzhou 310009 3 Department of Pharmacology,medical school of Zhejiang university,hangzhou 310031,china Respiratory Department the Second Affiliated Hospital Medical School of Zhejiang University Hangzhou China Department of Pharmacology Medical School of Zhejiang University Hangzhou China

Aim:To determine the effects of acetamide-45 on respiratory function,airwayinflammation,and the activity of phosphodiesterase 4（PDE4）in allergic ***:Rats were sensitized by a single intramuscular injection with ovalbumin（OVA）and were challenged with ovalbumin applied by using an aerosol repeat-edly for 7 d after 2 ***-45 at concentrations of 5,10,or 30 mg/kg wasthen administered by intraperitoneal *** in dynamic lung compli-ance and lung resistance,the accumulation of inflammatory cells in bronchoalveolarlavage,PDE4 activity,and the concentration of interleukin-4 in rat lung tissuewere ***:Seven days of treatment with acetamide-45 preventedeosinophil accumulation in allergic *** doses of 5,10,and 30 mg/kg,aceta-mide-45 decreased lung resistance to 0.20±0.04,0.25±0.07,and 0.22±0.05cmH2O·s-1·mL-1,respectively（P39±0.06,and 0.42±0.09 mL/cmH20（P3±57,and 238±36 nmol·g-1·min-1（P3,5.95±1.20,and 5.68±2.20 μtg/g protein（P<0.05 vs OVA）.Conclusions:Acetamide-45 wasfound to improve respiratory function and inhibit airway inflammation in thisanimal model,and the PDE4 activity of lung tissue was obviously ***-45 was an effective anti-inflammatory agent in respiratory inflammation,and the mechanism of its action might depend on inhibition of PDE4.

关键词： acetamide-45 3’,5’-cyclic nucleotide phosphodiesterase respiratory function tests eosinophils asthma

Transitional function of DG to CA3 in the hippocampus

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Progress in Natural Science:Materials International 2007年第12期17卷 1436-1444页

作者： Yan Chuankui1 and Liu Shenquan2(1. Department of Mathematics, hangzhou normal university, hangzhou 310036, china 2. Department of Applied Mathematics, school of Mathematical Sciences, South china university of Technology, Guangzhou 510640, china) Department of Mathematics Hangzhou Normal University Hangzhou 310036 China Department of Applied Mathematics School of Mathematical Sciences South China University of Technology Guangzhou 510640 China

Using single cell channel model, the transmission features of CA3-DG network in the hippocampus are investigated. The influence of the stimulation on discharge pattern of pyramidal neurons is analyzed, which shows that it starts with period spiking discharges, followed by period-doubling bifurcation to chaos, and period 3 discharge evolving into chaos, and ultimately a period of bursting discharges. By the synaptic model, the CA3-DG network model is constructed, which analyzes the summation of postsynaptic currents in the network, the influence of postsynaptic current on discharge rhythm as well as the mechanism of bursting discharges. The strong capacity of spatiotemporal encoding in the network indicates the features of CA3 network during the information transmission process in the hippocampus. The modeling result with time delay of the synaptic transmission is in accordance with the experimental phenomena of action potential in the hippocampus.

关键词： hippocampus CA3-DG period-doubling bifurcation chaos.

User-controllable mesh segmentation using shape harmonic signature

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Progress in Natural Science:Materials International 2009年第4期19卷 471-478页

作者： Yongwei Miao a,b, Jieqing Fenga, Jinrong Wanga,c, Xiaogang Jin a a State Key Laboratory of CAD & CG, Zhejiang university, hangzhou 310027, china b College of Science, Zhejiang university of Technology, hangzhou 310032, china c Information Science & Engineering school, hangzhou normal university, hangzhou 310036, china State Key Laboratory of CAD & CG Zhejiang University Hangzhou 310027 China College of Science Zhejiang University of Technology Hangzhou 310032 China Information Science & Engineering school Hangzhou Normal University Hangzhou 310036 China

Due to different shape modeling applications, partitioning a given complex 3D mesh model into some patches or meaningful subparts is one of the fundamental problems in digital geometry processing. By using the high-dimensional mean-shift clustering scheme in shape signature space, a new method is proposed which can generate user-specified segmentation results automatically for different applications. The shape signature is composed of mesh geometric attributes and its spectral harmonics. The latter one can reflect mesh frequency spectrum information. The low frequency components are essential for semantics-oriented segmentation, while the high frequency components are important for purely geometry-oriented segmentation. The effects of the proposed method are demonstrated by several examples.

关键词： Mesh segmentation Manifold harmonic analysis Shape harmonic signature Mean-shift clustering

Weighted composition operators between μ-Bloch spaces on the unit ball

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Science china Mathematics 2005年第10期48卷 1349-1368页

作者： ZHANG Xuejun~1 & XIAO Jianbin~2 1. College of Mathematics and Computer Science,Hunan normal university,Changsha 410006,china(email:xuejunttt@263. net) 2. The school of Science,hangzhou Dianzi university,hangzhou 310037,china College of Mathematics and Computer Science Hunan Normal University Changsha China The school of Science Hangzhou Dianzi University Hangzhou China

In this paper,necessary and sufficient conditions are given for the weighted composition operator T_(ψ,ψ) to be bounded or compact from the space β_μ to β_ν (or β_(μ,0) to β_(ν,0) ) on the unit ball of C^***... 详细信息

关键词： μ-Bloch space, weighted composition operator, boundedness, compactness.

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Inhibitory effects of cryptoporus polysaccharide on airway constriction, eosinophil release,and chemotaxis in guinea pigs

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Acta Pharmacologica Sinica 2004年第4期25卷 105-109页

作者： Xiao-yan ZHAO, Qiang-min XIE2, Ji-qiang CHEN, Chuan-kui KE3 Zhejiang Respiratory Drugs Research Laboratory of State Drugs Administration of china, medical school ofZhejiang university, hangzhou 310031 3TSBIO Science& Technology Co,Ltd, hangzhou 310006, china 浙江大学国家食品药品监督管理局呼吸药物研究实验室 Hangzhou 310031 TSBIO Science & Technology Co Ltd Hangzhou 310006

AIM: To study effects of cryptoporus polysaccharide (CP) on antigen-induced bronchoconstriction, eosinophil peroxidase (EPO) release in vivo, and on platelet activating factor (PAF)-induced eosinophil chemotaxis in vitro in guinea pig. METHODS: The asthma model of guinea pig was formed with ovalbumin (OVA). The changes of lung resistance (RL) and dynamic lung compliance (Cdyn), EPO level in bronchoalveolar lavage fluids (BALF) and eosino- phil migration were determined. RESULTS: Pretreatment of CP at doses of 3, 9, and 27 mg/kg by intragastric gavage (ig), qd for 10 d, inhibited early asthma response in a dose-dependent manner. Inhibitory rates of mean increase value from 1 to 30 min of RL were 34.8 %, 74.4 % (P3, 9, and 27 mg/kg also inhibited late asthma response, and the reduction of EPO level in BALF were 3.1 %, 16.9 % (P3, 1.3, 13, 130 nmol/L to eosinophil migration induced by PAF were 6.8 %, 17.2 % (P35.9 % (P<0.01). CONCLUSION: CP protects lung against increase of RL and reduction of Cdyn, decreases EPO level in the asthma model, and inhibits eosinophil chemotaxis induced by PAF. The results suggest that CP may be a novel antiinflammatory agent for the treatment of asthma and allergic diseases.

关键词： polysaccharide ovalbumin bronchoconstriction respiratory function tests eosinophil peroxidase platelet activating factor chemotaxis asthma guinea pig

Endogenous histamine inhibits the development of morphine-induced conditioned place preference

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Acta Pharmacologica Sinica 2007年第1期28卷 10-18页

作者： Ying-xia GONG~2 Min LV~(2,3) Yong-ping ZHU~2 Yuan-yuan ZHU~2 Er-qing WEI~2 Hong SHI~3 Qun-li ZENG~2 Zhong CHEN~(2,4)2 Department of Pharmacology and Neurobiology,school of Medicine,Zhejiang university,hangzhou 310031,china 3 Department of Pharmacology,Zhejiang Academy of medical Sciences,hangzhou 310031,china Department of Pharmacology and Neurobiology School of Medicine Zhejiang University Hangzhou China Department of Pharmacology Zhejiang Academy of Medical Sciences Hangzhou China

Aim:The conditioned place preference(CPP)paradigm was used to investigatethe effects of endogenous histamine on the processes leading to morphine-induced reward-seeking behavior in Sprague-Dawley ***:The modelof CPP was used to assess the rewarding effect of *** levels of histamine,glutamate,γ-aminobutyric acid(GABA),dopamine(DA)and 3,4-dihydroxyphenyl-acetic acid(DOPAC)in rat brains were measured with high-performance *** technique was used to observe themorphological changes of ***:Intraperitoneal injection of mor-phine(2,5 or 10 mg/kg)induced the development of CPP in a *** addition,morphine administrations(10 mg/kg)decreased the hista-mine content and reduced the number and size of histaminergic neurons in thetuberomammillary nucleus(TM),as well as markedly increasing the DOPAC/DAratios in the ventral tegmental area(VTA)and nucleus accumbens(NAc).Intra-peritoneal injection of histidine(50,100 or 200 mg/kg)dose-dependently inhibitedthe development of morphine-induced *** lesions of the TM,whichdecreased the histamine levels in the VTA and NAc,potentiated the developmentof CPP induced by morphine(1 mg/kg,a dose that produced no appreciable effectwhen given alone)and increased the DOPAC/DA ratios in the VTA and NAc,butdid not change the glutamate or GABA levels in these *** reversedthe effects of the TM ***:These results indicate that endog-enous histamine plays a role in inhibiting the development of morphine-inducedreward-seeking behavior,and the inhibition may involve the modulation of dopa-minergic activity.

关键词： conditioned place preference histamine morphine rat tuberomammillary nucleus

Wrinkled petals and stamens 1,is required for the morphogenesis of petals and stamens in Lotus japonicus

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Cell Research 2006年第5期16卷 499-506页

作者： Jiang Hua Chen~1 Ji Liang Pang~2 Li Lin Wang~2 Yong Hai Luo~1 Xin Li~3 Xiang Ling Cao~1 Kui Lin~3 Wei Ma~3 Xiao He Hu~1 Da Luo~(1,3) ~1National Laboratory of Plant Molecular Genetics,Institute of Plant Physiology and Ecology,Shanghai Institutes for Biological Sciences,and Graduate school of the Chinese Academy of Sciences,Chinese Academy of Sciences,300 Fenglin Road,Shanghai 200032,china ~2school of Life Science,hangzhou normal College,16 Xuelin Road,hangzhou 310018,china ~3school of Life Science and Biotechnology,Shanghai Jiao Tong university,1954 Huashan Road,Shanghai 200030,china National Laboratory of Plant Molecular Genetics Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences and Graduate School of the Chinese Academy of Sciences Chinese Academy of Sciences Shanghai China school of Life Science Hangzhou Normal College Hangzhou China school of Life Science and Biotechnology Shanghai Jiao Tong University Shanghai China

Although much progress has been made in understanding how floral organ identity is determined during the floraldevelopment,less is known about how floral organ is elaborated in the late floral developmental *** we de-scribe a novel floral mutant,wrinkledt petals and stamensl (wps1),which shows defects in the development of petalsand *** analysis indicates that wps1 mutant is corresponding to a single recessive locus at the long arm ofchromosome *** early development of floral organs in wps1 mutant is similar to that in wild type,and the malfunctionof the mutant commences in late developmental stages,displaying a defect on the appearance of petals and *** mature flower,petals and stamen filaments in the mutant are wrinkled or folded,and the cellular morphology underL1 layer of petals and stamen filaments is *** is found that the expression patterns of floral organ identity genesare not affected in wps1 mutants compared with that of wild type,consistent with the unaltered development of allfloral ***,the identities of epidermal cells in different type of petals are *** histologicalanalysis shows that in wps1 flowers all petals are irregularly folded,and there are knotted structures in the petals,whilethe shape and arrangement of inner cells are malformed and *** on these results,we propose that Wps1acts downstream to the class B floral organ identity genes,and functions to modulate the cellular differentiation duringthe late flower developmental stages.

关键词： Lotus japonicus wps1 mutant ABC model floral organ differentiation

Minocycline inhibits 5-lipoxygenase activation and brain inflammation after focal cerebral ischemia in rats

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Acta Pharmacologica Sinica 2007年第6期28卷 763-772页

作者： Li-sheng CHU~(2,3),San-hua FANG~2,Yu ZHOU~2,Guo-liang YU~2,Meng-ling WANG~2,Wei-ping ZHANG~2,Er-qing WEI~(2,4)~2 Department of Pharmacology,school of Medicine,Zhejiang university,hangzhou 310058,china ~3 Department of Physiology ZhejiangChinese medical university hangzhou 310053,china Department of Pharmacology School of Medicine Zhejiang University Hangzhou China Department of Physiology Zhejiang Chinese Medical University Hangzhou China

Aim:To determine whether the anti-inflammatory effect of minocycline on postis-chemic brain injury is mediated by the inhibition of 5-lipoxygenase （5-LOX）expression and enzymatic activation in ***:Focal cerebral ischemiawas induced for 30 min with middle cerebral artery occlusion,followed *** ischemic injuries,endogenous IgG exudation,the accumulationof neutrophils and macrophage/microglia,and 5-LOX mRNA expression weredetermined 72 h after reperfusion.5-LOX metabolites （leukotriene B4and cysteinylleukotrienes） were measured 3 h after ***:Minocycline （22.5and 45 mg/kg,ip,for 3 d） attenuated ischemic injuries,IgG exudation,and theaccumulation of neutrophils and macrophage/microglia 72 h after *** inhibited 5-LOX expression 72 h after reperfusion and the production ofleukotrienes 3 h after reperfusion,Conclusion:Minocycline inhibited postis-chemic brain inflammation,which might be partly mediated by the inhibition of5-LOX expression and enzymatic activation.

关键词： minocycline 5-1ipoxygenase leukotriene focal cerebral ischemia inflammation