血管

In above mentioned conditions, the number of vessel ramification and ratio of vessel area/CAM area in VEGF group were 128.4±10.02 and 7.44±1.36 respectively, so there was no difference between PMP and VEGF groups. It is concluded that PMPs show promotive effect on the formation of capillaries in chick chorioallantoic membranes.Key words platelet??

而在对照组无特异性密集血管生成，血管分支数为82.6±8.05，血管面积为1.78±0.33，二组比较有显著性差异（P＜0.05）；而与VEGF组比较，后者的血管分支数为128.4±10.02，血管面积为7.44±1.36，二组比较差异无显著性。

Results Free vascularized bone flap was successfully transferred to repair the bone defects in 30 cases. Epineurial neurorrhaphy and interfascicular nerve grafting were used to repair the forearm wounds of peripheral nerve in 150 cases and the good-excellent rate is better than that of tranditional methods. The forearm wounds of peripheral blood vessels were repaired by anastomosis and grafting in early stage in 500 cases , and the patency rate was 91％. The defects of skin , muscle of limbs in forearm wounds were repaired in a one-stage procedure in 120 cases , the problem of muscle force was solved simultaneously.

结果对30例战伤性骨缺损，采用吻合血管的骨移植，全部获得成功；对150例周围神经火器伤，采用神经束间缝合及束间移植术，其总优良率较传统方法为优；对500例周围血管火器伤，早期进行血管吻合和血管移植术，血管通畅率为91％；对120例四肢战伤性皮肤、肌肉等软组织缺损进行一次性修复，并同时解决肌肉的动力。

Describing index: Before the interventional therapy,the number of femoral head 's blood vessel wasslender and the number of ramus anastomoticus was rare.The blood vessel was stegnotic and even was interrupted .The stained range was localized and dark . After the interventional therapy,the embolic blood vessel became easy and smooth . The blood vessel was thick and excurrent .The stained range was wide and light-coloured.

描述性指标：介入治疗前，股骨头供血血管稀少，吻合支少，血管狭窄、中断，对比剂染色范围小，颜色深；介入治疗后闭塞中断和/或严重狭窄的血管再通，髋部血管数量增多，血管径增粗，血管延伸，对比剂染色范围变大，颜色浅。2。

Two mechanisms, vasculogenesis and angiogenesis, can elucidate the neovascularization of pedicle flaps, in which angiogenesis contains endothelial sprouting, intussusceptive angiogenesis and revascularization.

带蒂皮瓣新生血管化主要有血小管发生和血管生成两种机制，其中血管生成包括内皮出芽、套叠式血管生成和血管重建术。

Twelve hours latter,uterine vessels formation was revealed by tannin-Fe lavement solution.Results The uterine vessel formation of rats in the model group showed that varices,tetanic shape,the density of all levels vessel net increased obviously and its twist,serpentine shape decreased markedly,while that in the large,middle dosage Gongning groups displayed absolute contrarily and fit like a glove with the normal control group.The uterine vessel formation of rats in the small dosage Gongning group and indomethacin group also showed the same transformation as it in the model group.

结果 模型组大鼠子宫各级血管扩张增粗，走行僵直，螺旋状和蜿蜒状走行消失或明显减少，血管形成的各级血管网密度增加，分布不均；消炎痛组、宫宁小剂量组子宫血管仍存在较明显的血管腔扩大、走行僵直和血管网密度增加，宫宁大、中剂量组子宫血管构筑的异常改变消失或明显改善。

Recombinant hANG had no effect on the expression of VEGF and bFGF in both SMCC-7221 cells and HUVEC cells, suggested that hANG exerted its antiangiogenic role not through the inhibition of the autosecretion and parasecretion of angiogenic stimulatory factors VEGF and bFGF.

重组人血管抑素对SMMC-7721肝癌细胞及HUVEC细胞中两种血管生长刺激因子VEGF和bFGF的表达没有影响，提示血管抑素对肿瘤血管生长的抑制作用不是通过抑制血管生长刺激因子的自分泌和旁分泌来实现的。

Our results indicated that (1)SO_2 derivatives could dose-dependently relax the isolated aorta rings with or without endothelium precontracted by NE, no difference was found for the rings with and without endothelium;(2)Levels of cAMP and 6-Keto(PGI_2) in isolated aortic rings were increased by SO_2 derivatives in a dose-dependent way, which were independent of endothelium;(3)SO_2 derivatives decreased cGMP levels in the rings, but not significantly; The decrease of cGMP levels was also independent of endothelium;(4)No changes of TXB_2 in rings with or without endothelium were observed;(5)Whether presence or absence of endothelium, cAMP/cGMP and 6-Keto/TXB_2 ratios were increased significantly.

结果：①SO_2衍生物对去甲肾上腺素预收缩的内皮完整和去除内皮的大鼠胸主动脉血管环均呈浓度依赖性舒张作用，且其张力变化在内皮完整与去内皮的血管环之间无显著性差异；②SO_2衍生物可引起血管组织中cAMP、6-Keto(即PGI_2)含量剂量依赖性增加，其增加程度与内皮无关；③SO_2衍生物对血管环cGMP含量呈降低趋势但在统计学上无显著意义，且对去除内皮血管无显著影响；④SO_2衍生物对去内皮或内皮完整血管环的TXB_2含量均无明显影响；⑤无论是否去除内皮，SO_2衍生物均可引起cAMP／cGMP和6-Keto／TXB_2比值显著升高。

This research method is to use the three-dimensional mapping software to draw the cardiovascular stent of different size first , next is it create their cardiovascular stent boundary conditions and simulation their of support after implantation according to finite element method into the human body to go; Receive different residue pressures and pressure of the repeated blood circulation , greatest stress , meets an emergency and the relation between total deformation amount caused; Being imitated the cardiovascular stent , the position with damage of fatigue life in the blood vessel by its greatest stress value at the same time ; But by the simulation result of the above , can understand that use life of Palmaz-schatz cardiovascular stent has been more than 109 up till now ; At the same time , can know the position where the stress two times concentrates , the right angle position joined in the rib and rib of Palmaz-schatz cardiovascular stent too.

本研究的方法乃是先会使用三维绘图软体画出不同尺寸的血管支架，然后在根据有限元素法去设定其血管支架的边界条件和模拟其植入人体后；受到不同的残留压力与反覆血液流动的压力，所造成的最大应力、应变及总变形量之间的关系；同时在由其最大应力值去模拟血管支架，在血管中的疲劳寿命与疲劳损坏位置；然而由以上的模拟结果，可以了解到目前Palmaz-schatz血管支架之使用寿命为109以上；同时也可以知道二次应力集中的位置，在Palmaz-schatz血管支架之肋和肋连接的直角位置。

Abstract］ Objective To assess the endothelium-dependent relaxation in patients with essential hypertension or hypertension smokers by color Doppler flow imaging.Methods With intermittent ultrasound imaging and power Doppler imaging,we measured endothelium-dependent relaxing function in 72 subjects 24 of whom with essential hypertension,24 of whom with both hypertension and smokingand the others as normal control.We measured the diameter of the superficial femoral and brachial arteries at rest,during reactive hyperaemia,re-test and after sublingual glyceryl trinitrate for evaluating the endothelium-independent dilatation in subjects.The level of plasma NO,ET,PGI2,and TXB2 were determined.

摘要］ 目的探讨原发性高血压及高血压合并吸烟患者血管内皮依赖性舒张功能的改变方法采用彩色普勒高频超声的间歇成像和能量多普勒成像，对24例原发性高血压患者、24例高血压合并吸烟患者及24例正常血压无吸烟史者的血管内皮依赖性舒张功能，包括静息时血管内径、增加流量引起的血管舒张、硝酸甘油引起的血管舒张等，以及对血浆氧化氮、内皮素、血栓素B2（TXB2）和列腺环素（PGI2）等血管活性物质进行检测并比较分析。

At 24 h, Ang1 was expressed mainly in the lens, optic cup, mesencephalon, ventral part of hindbrain, and myotomes in the somites, while zfTie2 was mainly expressed in intersomitic vessels including dorsal aorta and axial veins, and sprouting vessels from the dorsal aorta in the trunk. VEGF was expressed mainly in the lens, optic cup, mesencephalon and myotomes in the somites, while zfFlk1 was mainly expressed in intersomitic vessels including dorsal aorta and axial veins, and sprouting vessels from the dorsal aorta in the trunk.

结果从受精卵胚胎发育第12小时可见血管内皮细胞生长因子和血管发生素1及其相应受体flk1和Tie2的表达；在受精卵胚胎发育的第16小时，血管内皮细胞生长因子和血管发生素1主要在头部和尾部胚芽表达；第24小时在眼球、视窝、中脑、后脑的腹前侧和肌节中表达，Tie2和Flk1主要在肌间背部动脉血管、躯干新生血管芽和轴向静脉中表达。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。