Blood vessels最新文献_第7页

Seasonal variations of serotonin-induced contractility in vitro in bovine middle cerebral artery. 血清素诱导牛大脑中动脉收缩力的季节变化。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158902

P E Vinall, J J Michele, F A Simeone

引用次数: 4

Generation of nitric oxide from organic nitrovasodilators during passage through the coronary vascular bed and its role in coronary vasodilation and nitrate tolerance. 有机硝基血管扩张剂通过冠状动脉血管床时产生一氧化氮及其在冠状动脉血管扩张和硝酸盐耐受中的作用

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158844

K Schrör, I Woditsch, S Förster

引用次数: 15

Dynamics of capillary perfusion in the brain. 脑内毛细血管灌注动态。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158861

U Göbel, H Theilen, H Schröck, W Kuschinsky

引用次数: 11

Reduction of postischemic reperfusion injury by the vasoactive drug buflomedil. 血管活性药物丁咯地尔减少缺血后再灌注损伤。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158913

D Nolte, H A Lehr, F U Sack, K Messmer

{"title":"Reduction of postischemic reperfusion injury by the vasoactive drug buflomedil.","authors":"D Nolte, H A Lehr, F U Sack, K Messmer","doi":"10.1159/000158913","DOIUrl":"https://doi.org/10.1159/000158913","url":null,"abstract":"The effect of buflomedil on postischemic reperfusion injury was studied in the dorsal skin fold chamber preparation of awake hamsters. Microvascular events were investigated in the striated skin muscle by means of intravital fluorescence microscopy prior to 4 h of pressure-induced ischemia and 30 min, 2 and 24 h after reperfusion. In untreated control animals, ischemia and reperfusion provoked marked leukocyte sticking and macromolecular leakage while functional capillary density was reduced. Treatment with buflomedil (3 mg/kg b.w. in 0.3 ml saline, administered as bolus of 0.1 ml 10 min prior to release of ischemia followed by i.v. infusion of 0.2 ml during the first 20 min of reperfusion) significantly reduced leukocyte sticking and macromolecular leakage, while functional capillary density was effectively preserved. No differences in macro- and microhemodynamic parameters were observed between buflomedil-treated and untreated animals. These findings support the concept that activated leukocytes are involved in the microvascular manifestation of reperfusion injury and indicate that leukocyte sticking and its sequelae can be efficiently prevented by treatment with buflomedil.","PeriodicalId":9009,"journal":{"name":"Blood vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1159/000158913","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12882062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Modest pressure natriuresis and autoregulation during water diuresis in dogs. 狗在水利尿过程中的适度压力尿钠和自动调节。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158890

W H Waugh

{"title":"Modest pressure natriuresis and autoregulation during water diuresis in dogs.","authors":"W H Waugh","doi":"10.1159/000158890","DOIUrl":"https://doi.org/10.1159/000158890","url":null,"abstract":"The effects of renal arterial pressure change on renal output of sodium and volume were measured during water diuresis in 25 chloralose-anesthetized dogs. Conditions included a minimal invasive stress, limited sodium administration, and mean renal arterial pressures varied suprarenally, by aortic balloon inflation to lowermost levels of 82-106 mm Hg. Group A dogs received no aldosterone; group B, C and D dogs were given aldosterone. Dogs of group C also received (1-Sar, 8-Ile)-angiotensin II. Group D dogs received phenylephrine which elevated arterial and right atrial pressures moderately without decrease in renal blood flow. In groups A, B and C, mean changes in sodium output, volume output, fractional excretions and free water clearances were not detectable with mean renal arterial pressure reductions, which averaged 29 +/- 2.9, 22 +/- 2.8 and 27 +/- 5.2 mm Hg, respectively. Right atrial pressures, effective renal blood flows and glomerular filtration rates did not change with the renal arterial pressure changes in these groups. In the group D dogs, during the larger pressure reductions of 54 +/- 6.6 mm Hg from higher values of 158 +/- 7.0 mm Hg, mean urine flow and effective renal blood flow remained constant while glomerular filtration rate and sodium output decreased only slightly. Output efficiency ratios related to perfusion pressure were calculated. With no more than modest pressure-induced excretory changes, it is concluded that excretory sodium and urinary volume autoregulation in concert with nearly perfect circulatory autoregulation were demonstrated with regionally varied mean renal arterial pressure. The same preglomerular myogenic responses to transvascular pressure, which restrict glomerular and transcapillary pressures, are viewed dominantly responsible for both circulatory and excretory autoregulation under normal conditions of minimal stress and low fractional sodium excretions. Homeostatic implications are discussed concerning likely relevance to the Guyton-Coleman theory for the long-term control of arterial blood pressure.","PeriodicalId":9009,"journal":{"name":"Blood vessels","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1159/000158890","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12945867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of flux motion in man by the laser Doppler technique. 用激光多普勒技术评价人体的磁通运动。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158916

A Bollinger, U Hoffmann, U K Franzeck

引用次数: 64

Quantitative measurement of fixation rate and dimension changes in the aldehyde/pressure-fixed canine carotid artery. 醛/加压固定犬颈动脉固定率及尺寸变化的定量测定。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158885

R G Kratky, D K Lo, M R Roach

引用次数: 17

Role of potassium channels in the vascular response to endogenous and pharmacological vasodilators. 钾通道在内源性和药理学血管扩张剂血管反应中的作用。

Blood vessels Pub Date : 1991-01-01 DOI: 10.1159/000158854

J E Brayden, J M Quayle, N B Standen, M T Nelson