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arterial ring
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  动脉环
     The femoral head receives blood supply from the anterior, posterior, medial and lateral ascending cervical arteries, which are given off by the extracapsular arterial ring, and also from the ligamentum capitis femoris artery.
     股骨头的血液供应来自囊外动脉环上发出的前、后、内侧和外侧四组颈升动脉以及股骨头韧带动脉。
短句来源
     Furthermore, in the area around the tarsal canal, the tarsal sinus, the superior surface of the neck and the medial surface of the body of the talus, there was an arterial ring formed by the deltoid branch,the tarsal canal artery, the tarsal sinus artery, the superior branch of the neck and the anastomoses among them.
     而且,环绕着跗骨管、跗骨窦、距骨颈的上面和距骨体部的内侧面,由三角支、跗骨管动脉、跗骨窦动脉、颈上支及其相互之间的吻合血管网形成了一个不定形的距骨动脉环
短句来源
     To investigate the effects of simulated weightlessness on vasoreactivity of mesenteric arteries,rats were tail-suspended for two weeks, and vasoreactivity were studied in vitro using isolated mesenteric arterial ring.
     为观察模拟失重对肠系膜动脉血管反应性的影响,采用尾部悬吊大鼠模型模拟失重,并利用离体动脉环测定血管反应性的变化。
短句来源
     The results showed: ①the arteries supplied to patella formed a prepatellar arterial ring around patella, and the ring gave branches to patella;
     供应髌骨血液的各支动脉先在髌骨周围吻合成髌周动脉环,再由该环发支进入髌骨。
短句来源
     Conclusion Biphasic vasoconstriction can be induced by electrical stimulation,and the first and the second phases of vasoconstriction are mediated by neurotransmitters released from sympathetic nerves in the rabbit isolated saphenous arterial ring preparation.
     结论建立了电场刺激诱发兔离体隐动脉环双相收缩反应模型,该双相收缩与交感神经兴奋及其递质的释放有关。
短句来源
  主动脉环
     Then the rabbits were killed to make thoracic aortic rings (TARs) and pulmonary arterial rings (PARs), aortic and pulmonary arterial reactivities were observed by isolated arterial ring technique.
     5h后放血处死 ,制备主动脉环 (TARs)和肺动脉环(PARs) ,应用血管张力测定技术 ,检测离体主动脉、肺动脉反应性。
短句来源
  血管环
     Methods: The main trunk of the pulmonary artery was dissected in the male Sprague-Dawley rat and cut into arterial ring in 3~4 mm width.
     方法:从雄性Sprague-Dauley大鼠中分离出肺主动脉,切成3~4mm的血管环
短句来源
     Then the solution was changed every 20 minutes. After 30 minutes equilibration, the experiment above was repeated, cumulative concentrations 1, 4, 8, 40 and 80 μmol/L were applied, the arterial ring tension changes were observed.
     然后,20min换液1次,平衡30min后重复上述实验,待血管环张力达高峰并稳定后,分别加入染料木素与17β-雌二醇,累积浓度为1,4,8,40和80μmol/L,观察血管环张力变化。
短句来源
     The solution was changed every 20 minutes. After 30 minutes equilibration, the experiment above was repeated, and cumulative concentrations of 1, 4, 8, 40 and 80 μmol/L 17 β-estradiol were applied to observe the tension changes of arterial ring.
     20min换液一次,平衡30min后重复上述实验,待血管环张力达高峰并稳定后,分别加入17β-雌二醇,累积浓度分别为1,4,8,40和80μmol/L,观察血管环张力变化。
短句来源
     To explore the mechanism underlying cholecystokinin-octapeptide (CCK-8) induced attenuation in pulmonary arterial hypertension (PAH) in endotoxic shock (ES), the effect of CCK-8 on the changes in rabbit pulmonary arterial reactivity induced by tumor necrosis factor-alpha (TNF-α) was observed with isolated arterial ring technique and by examination of nitric oxide synthase (NOS).
     为探讨八肽胆囊收缩素 (CCK 8)缓解内毒素休克时肺动脉高压的作用机制 ,应用离体血管环张力测定技术及一氧化氮合酶 (NOS)检测方法 ,观察了一氧化氮 (NO)在CCK 8减轻肿瘤坏死因子 α (tumornecrosisfactor al pha,TNF α)的抑制肺动脉内皮依赖性舒张反应中的作用。
短句来源
  “arterial ring”译为未确定词的双语例句
     RESULTS: 1. When Tau (5-80mmol/L) was added accumulatively into the bath, less than 5% change of resting tension on isolated porcine coronary arterial ring was observed.
     结果:1. 以累积浓度法加入Tau (5-80mmol/L)后,冠状动脉基础张力的变化幅度小于5%,与对照组相比没有显著差异。
短句来源
     EC50 ofmesenteric arterial ring from SHRflu was only 56% of that from SHR.
     肠系膜动脉对硝普钠舒张的敏感性略高于SHR,EC50是对照组的56%。
短句来源
     Lipopolysaccharide (LPS), after 7- hour incubation, decreased the endothelium-dependent relaxation response of the arterial ring (pre-contracted with phenylephrine) to acetylcholine (1 μmol/L), but did not affect the endothelium-independent relaxation response to sodium nitroprusside.
     实验结果显示:LPS孵育7h后,肺动脉对1μmol/L乙酰胆碱介导的内皮依赖性舒张反应降低,但对非内皮依赖性舒张剂硝普钠的反应性无明显改变。
短句来源
     The Action of Cardiotoxin 13 Isolated from Chinese Cobra (Naja naja atra) Venom on Pig Coronary Arterial Ring Segments
     中华眼镜蛇毒心脏毒素-13对猪离体冠脉的作用
短句来源
     It was observed that in 55% of the fresh arterial ring segments a constriction could be elicited in response to ACh at concentrations between 0.1 and 3 nmol ? L-1. Increasing the concentration of ACh resulted in endothelium-dependent relaxation. Further increases in the concentration of ACh caused direct smooth muscle constriction.
     观察结果表明,55%的脑动脉血管条对0.1~3nmol·L~(-1)浓度的乙酰胆碱(ACh)产生了收缩反应,高于上述浓度的乙酰胆碱引起了血管内皮依赖性的舒张反应.
短句来源
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  arterial ring
Length-dependent activation and sensitivity in arterial ring segments
      
Arterial ring cultures are evaluated for assay of angiogenic activity in physiological fluids.
      
Distal tibia and fibula are supplied by the perimalleolar arterial ring, which is connected with the three arteries of the leg.
      
Distal tibia and fibula are supplied by the perimalleolar arterial ring, which is connected with the three arteries of the leg.
      
Visceral abnormalities included two shared hearts linked by an anastomotic arterial ring.
      
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The intracapsular and extracapsular arteries supplying the hip joint were dissected and measured on 61 specimens. The femoral head receives blood supply from the anterior, posterior, medial and lateral ascending cervical arteries, which are given off by the extracapsular arterial ring, and also from the ligamentum capitis femoris artery. The lateral ascending cervical artery, the most important vessel to the femoral head, was found to be the direct continuation of the profound branch of the medial femoral...

The intracapsular and extracapsular arteries supplying the hip joint were dissected and measured on 61 specimens. The femoral head receives blood supply from the anterior, posterior, medial and lateral ascending cervical arteries, which are given off by the extracapsular arterial ring, and also from the ligamentum capitis femoris artery. The lateral ascending cervical artery, the most important vessel to the femoral head, was found to be the direct continuation of the profound branch of the medial femoral circumflex artery in 58 cases and originate from the inferior gluteal artery in only 3 cases. The average outer diameter of this artery at the point where it pierces the capsule was 1.17±0.16mm, and its average inner diameter 0.72 ± 0.13mm. Its existence and course are constant and its calibre is bigger. The author suggests that when the lateral ascending cervical artery is obstructed or torn, a microsurgical technique be adopted to reconstruct blood supply of the femoral head so as to reduce its necrosis rate.

本文报告了对61例髋关节囊内、外动脉分布的剖查和测量结果。股骨头的血液供应来自囊外动脉环上发出的前、后、内侧和外侧四组颈升动脉以及股骨头韧带动脉。外侧颈升动脉是营养股骨头的最重要的血管,58例是旋股内侧动脉深支主干的直接延续,3例起源于臀下动脉,它穿过关节囊处的外径平均为1.17±0.16mm,内径为0.72±0.13mm。外侧颈升动脉的存在和走行经过恒定,管径也较粗。作者提出当外侧颈升动脉阻塞或撕裂时,可采用显微外科技术重建股骨头血运以降低股骨头坏死率的设想。

Two aspects of cholinergic neuro transmission in cat cerebral arteries, (1) the response to subdilatory concentrations of ACh and (2) the controversy concerning a possible neurogenic atropine-sensitive vasodilation, were examined in vitro. It was observed that in 55% of the fresh arterial ring segments a constriction could be elicited in response to ACh at concentrations between 0.1 and 3 nmol ?L-1. Increasing the concentration of ACh resulted in endothelium-dependent relaxation. Further increases in the...

Two aspects of cholinergic neuro transmission in cat cerebral arteries, (1) the response to subdilatory concentrations of ACh and (2) the controversy concerning a possible neurogenic atropine-sensitive vasodilation, were examined in vitro. It was observed that in 55% of the fresh arterial ring segments a constriction could be elicited in response to ACh at concentrations between 0.1 and 3 nmol ?L-1. Increasing the concentration of ACh resulted in endothelium-dependent relaxation. Further increases in the concentration of ACh caused direct smooth muscle constriction. This subdilatory constriction, as well as endothelium-dependent relaxation, could only be observed in precontracted arteries. The constriction, however, is not endothelium-dependent. Storing match segments in Krebs solution at 4°C for 5 days reduced the frequency of appearance of this subdilatory constriction to 13% without blocking endothelium-dependent relaxation or smooth muscle constriction. These results are incompatible with a direct role for ACh as the terminal transmitter in neurogenic vasodilation.

本文对猫脑动脉的胆碱能神经冲动传递的离体研究结果进行如下两方面的探讨:1)在乙酰胆碱亚舒张浓度下的反应;2)在阿托品敏感性神经源性血管舒张的可能性上的争议. 观察结果表明,55%的脑动脉血管条对0.1~3nmol·L~(-1)浓度的乙酰胆碱(ACh)产生了收缩反应,高于上述浓度的乙酰胆碱引起了血管内皮依赖性的舒张反应.进一步提高乙酰胆碱浓度则导致直接的血管平滑肌的收缩反应,0.1~3 nmol·L~(-1)亚舒张浓度乙酰胆碱引起的血管收缩反应以及高于此浓度乙酰胆碱所致的血管内皮依赖性舒张反应仅发生干预先已收缩而有张力的脑血管,亚舒张浓度乙酰胆碱(0.1~3nmol·L~(-1))所致的收缩反应并不依赖于血管内皮的存在,在Krebs溶液4℃条件下保存5d的同样脑血管对亚舒张浓度乙酰胆碱(0.1~3nmol·L~(-1))所致的收缩反应频率下降至13%,但血管内皮依赖性舒张反应或直接的血管平滑肌收缩反应在如此条件下保存的脑血管上依然完好. 以上结果与乙酰胆碱作为脑血管神经末梢递质导致神经源性血管舒张的假说是不相符合的。

The endothelium can profoundly affect vascular tone by releasing endothelium derived relaxing and contracting factors. Acetylcholine(Ach)was used to act as tool drug in evaluating integrity of endothelium in classics. Recently, effects of Ach and adenosine—5'—triphosphate (ATP)on isolated porcine coronary arterial rings were observed. Ach can produce does- dependent contraction on both endothelium — intact and endothelium—denuded porcine coronary artery although Ach can induce endothelium — dependent relaxation...

The endothelium can profoundly affect vascular tone by releasing endothelium derived relaxing and contracting factors. Acetylcholine(Ach)was used to act as tool drug in evaluating integrity of endothelium in classics. Recently, effects of Ach and adenosine—5'—triphosphate (ATP)on isolated porcine coronary arterial rings were observed. Ach can produce does- dependent contraction on both endothelium — intact and endothelium—denuded porcine coronary artery although Ach can induce endothelium — dependent relaxation on cat aorta in contrast. ATP can produce endothelium— dependent relaxation on porcine coronary artery. These findings suggest that ATP can act as tool drug in bioassay of endothelium integrity on porcine coronary arterial ring, but Ach can not.

血管内皮细胞通过释放内皮细胞源性收缩和舒张因子调节血管平滑肌细胞的舒缩活动,经典上在离体血管实验中常采用乙酰胆碱作为检验血管内皮细胞完整性的工具药。最近我们在离体猪冠状动脉环上观察到不论内皮是否完整,乙酰胆碱均呈剂量依赖性收缩反应,但三磷酸腺苷则可诱发内皮依赖性松弛反应,在此基础上我们建立了以三磷酸腺苷为工具药评价猪冠状动脉内皮细胞完整性的新方法。

 
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