Abstract：
:The anatomic arrangement, pressure distribution, and resting vascular tone of the feed arteries located upstream from the rat cremaster microcirculation were determined to characterize the sites of the vascular resistance in this macrovessel segment of the cremaster circulation. The cremaster microcirculation and its feeding arteries were studied using an intravital video microscopy system. Vascular diameters and pressures were measured with an image shearing monitor and servo-null micropipet system, respectively. The central arteriole of the cremaster muscle was found to be a distal segment of the external spermatic artery which branched from the pudic-epigastric artery that in turn arose from the common iliac artery. Together the length of these vessels, from the aorta to the cremaster muscle, was 37 mm and they accounted for 42% of the total pressure drop across the cremaster vascular network. The largest pressure drop (31 mm Hg) upstream from the cremaster occurred across the external spermatic artery which was also the longest (17.7 mm) feed vessel. Topical application of adenosine (1 X 10(-3) M) significantly dilated the pudic-epigastric artery and the external spermatic artery, indicating that these vessels had significant tone. In summary, our data indicate that the large fraction of network vascular resistance located in the feed vessels upstream from the cremaster is the result of both architectural features and vascular tone.
journal_name
Microvasc Resjournal_title
Microvascular researchauthors
Meininger GA,Fehr KL,Yates MBdoi
10.1016/0026-2862(87)90009-4subject
Has Abstractpub_date
1987-01-01 00:00:00pages
81-97issue
1eissn
0026-2862issn
1095-9319pii
0026-2862(87)90009-4journal_volume
33pub_type
杂志文章abstract：:Particle adhesion in vivo is highly dependent on the microvascular environment comprising of unique anatomical, geometrical, physiological fluid flow conditions and cell-particle and cell-cell interactions. Hence, proper design of vascular-targeted drug carriers that efficiently deliver therapeutics to the targeted ce...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2015.02.004
更新日期：2015-05-01 00:00:00
abstract：:Endothelial cells and endothelial progenitor cells (EPCs) play a key role in the pathogenesis of vascular disease. Both cell types are affected by the oxidative stress but their susceptibility may be different. This study aimed to investigate the antioxidative enzymes activated in EPCs after high constant glucose expo...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2010.05.004
更新日期：2010-12-01 00:00:00
abstract：:Vascular dysfunction is an important pathophysiologic manifestation of sickle cell disease (SCD), a condition that increases risk of pulmonary hypertension and stroke. We hypothesized that infrared (IR) imaging would detect changes in cutaneous bloodflow reflective of vascular function. We performed IR imaging and con...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2012.06.011
更新日期：2012-11-01 00:00:00
abstract：:Blood flow studies in the brain, heart, and other organs suggest that there could be interaction between nitric oxide (NO) and adenosine. This possibility was investigated in the optic nerve head (ONH) during photic stimulation of the dark-adapted cat eye. Functional activation of ONH blood flow was measured by laser ...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1006/mvre.2002.2432
更新日期：2002-09-01 00:00:00
abstract：:The contractile responses of cultured rat and calf endothelial cells (EC), vascular smooth muscle cells (VSMC), and fibroblasts (FB) to vasoactive mediators (thrombin, serotonin, bradykinin, and histamine), forskolin, and cytochalasin B were compared. Cells were grown on a pliable silicone membrane, and contraction wa...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(92)90015-h
更新日期：1992-03-01 00:00:00
abstract：:The effect of isoprenaline infusion (1 gamma/min) on blood flow in the extremities was studied in 15 Raynaud's disease (RD) patients and 9 healthy controls. A highly significant (P less than 0.0005) decrease in blood flow was seen in the RD subjects. It is suggested that an increased presynaptic beta receptor response...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(84)90045-1
更新日期：1984-01-01 00:00:00
abstract：:We have used ruthenium red, a cationic dye, to detect at the electron microscopic level the presence of anionic sites in various murine basement membranes, with particular emphasis on those of the microvasculature. We have observed anionic sites in all continuous and fenestrated capillaries examined. Terminal lymphati...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(83)90018-3
更新日期：1983-05-01 00:00:00
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journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1006/mvre.1993.1004
更新日期：1993-01-01 00:00:00
abstract：:Angiogenesis, or the growth of new blood vessels, is critical to both health and disease. Several genes are implicated in the regulation of angiogenesis, such as genes encoding growth factors, cytokines, and the extracellular matrix, as well as transcription factors. Among them, Hox genes exert master regulatory effec...
journal_title：Microvascular research
pub_type： 杂志文章,评审
doi：10.1016/j.mvr.2013.02.009
更新日期：2013-05-01 00:00:00
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journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1006/mvre.2000.2289
更新日期：2001-01-01 00:00:00
abstract：:Timely diagnostics of microcirculatory system abnormalities, which are the most severe diabetic complications, is one of the major problems facing modern health care. Functional abnormalities manifest themselves earlier than the structural ones, and therefore their assessment is the issue of primary importance. In thi...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2018.05.005
更新日期：2018-11-01 00:00:00
abstract：BACKGROUND:Tissue ischemia and reperfusion (I/R) affects blood flow restoration and oxygen delivery to the damaged tissues contributing to tissue morbidity and microcirculatory compromise. Pulsed acoustic cellular expression (PACE) technology is known to support tissue neovascularization. The aim of this study was to t...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2011.11.005
更新日期：2012-03-01 00:00:00
abstract：:Carrier-immobilized carbohydrates are valuable tools for assessing the glycoligand-binding capacity of cell surfaces. A panel of 10 types of fluorescent neoglycoproteins has been synthesized to determine the extent of their specific binding to endothelial cells in vitro that have been obtained from porcine brain, ovar...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1006/mvre.1995.1053
更新日期：1995-09-01 00:00:00
abstract：:The retina provides a window to study the pathophysiology of cerebrovascular diseases. Pathological retinal microvascular changes may reflect microangiopathic processes in the brain. Recent advances in optical imaging techniques have enabled the imaging of the retinal microvasculature at the capillary level, and the g...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2013.06.008
更新日期：2013-09-01 00:00:00
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journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2007.12.002
更新日期：2008-04-01 00:00:00
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journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1006/mvre.1999.2208
更新日期：2000-01-01 00:00:00
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journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1006/mvre.1993.1048
更新日期：1993-09-01 00:00:00
abstract：:Laser Doppler flowmetry (LDF) of forearm skin blood flow, combined with iontophoretically-administered acetylcholine and sodium nitroprusside and wavelet spectral analysis, was used for noninvasive evaluation of endothelial function in 17 patients newly diagnosed with New York Heart Association class II-III congestive...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2008.07.006
更新日期：2008-11-01 00:00:00
abstract：:The purpose of this study was to examine the distribution and extent of autoregulatory behavior among arterioles in the arcade network of the cat mesentery. We found that 71% of 169 arterioles studied dilated and 63% showed blood flow autoregulation with arterial pressure reduction to 55-60 mm Hg. There appeared to be...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(83)90050-x
更新日期：1983-07-01 00:00:00
abstract：:A novel first-pass imaging method for studying blood flow in tumors and normal tissues in mouse dorsal window chamber preparations is reported in this study. A fluorescence-labeled macromolecule is administered i.v. as a bolus dose, and the signal generated by the bolus is detected as the bolus passes through the vasc...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2007.06.009
更新日期：2008-03-01 00:00:00
abstract：OBJECTIVE:Studies on the acute effects of coffee on the microcirculation have shown contradicting results. This study aimed to investigate if intake of caffeine-containing coffee changes blood flow and microvascular reactivity in the skin. METHODS:We measured acute changes in cutaneous vascular conductance (CVC) in th...
journal_title：Microvascular research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.mvr.2017.06.006
更新日期：2017-11-01 00:00:00
abstract：:The role of VEGF during development and in pathology is well known, but its function in normal adult tissues is poorly understood. Adverse effects associated with the use of anti-angiogenic therapies targeting VEGF in human pathologies have begun to reveal potential functions of VEGF in quiescent vasculature. Further ...
journal_title：Microvascular research
pub_type： 杂志文章,评审
doi：10.1016/j.mvr.2007.03.004
更新日期：2007-09-01 00:00:00
abstract：:The extravascular uptake for labeled albumin and IgG and the extravascular masses for endogenous albumin and IgG were measured in skin and skeletal muscle from anesthetized rabbits following 24 hr of intermittent plasmapheresis. An amount of protein equivalent to the total intravascular protein mass was removed. There...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(92)90089-8
更新日期：1992-11-01 00:00:00
abstract：OBJECTIVE:To assess the morphology of the lymphatic system pre- and postoperatively in patients undergoing microsurgical reconstructions of the lymphatic vessels. MATERIALS AND METHODS:8 lower extremities in 4 consecutive patients with secondary unilateral lymphedema of the lower extremities were examined by MR lympha...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2008.03.003
更新日期：2008-05-01 00:00:00
abstract：:Living mesenteric capillaries with either an intact or disrupted glycocalyx were challenged with ramp change in shear stress (Deltatau). Animals (Rana pipiens) were divided randomly into two experimental groups, and two true capillaries (TC) per animal were investigated. The modified Landis technique was combined with...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2009.12.001
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVE:Leukocytes play a key role in the early response to tissue injury/infection resulting from physical, chemical or biological stimuli. This process involves the initiation of the leukocyte adhesion cascade mediated by a series of interactions between receptors and ligands on the endothelium and the leukocytes. ...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/j.mvr.2013.03.007
更新日期：2013-09-01 00:00:00
abstract：:Capillary diameters in sartorius muscle of frogs were measured in vivo by means of a new computer video method, based on the passage of red blood cells (RBCs) through the capillary (C. Ellis, R. Sanfranyos, and A. Groom (1983), Microvasc. Res. 26, 139-150). The distribution of capillary diameters from 21 frogs was rep...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(83)90066-3
更新日期：1983-09-01 00:00:00
abstract：:In diabetic patients small fiber neuropathy has been associated with impairment of 0.1 Hz microvascular vasomotion. The aim of this study was (1) to investigate whether vasoconstriction-induced microvascular oscillations in the skin are reduced in diabetic patients with peripheral and/or autonomic neuropathy, and (2) ...
journal_title：Microvascular research
pub_type： 临床试验,杂志文章
doi：10.1016/j.mvr.2008.04.004
更新日期：2008-08-01 00:00:00
abstract：:Studies of microvascular geometry made from microscope observations of tissues in vivo or after perfusion with a silastic elastomer or india ink are restricted to a two-dimensional field of view. Microvascular corrosion casts, however, if of sufficient rigidity and structural integrity, can yield three-dimensional inf...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(83)90044-4
更新日期：1983-01-01 00:00:00
abstract：:Spontaneous contractions and those elicited by electrical stimulation were studied in isolated segments of bovine mesenteric lymphatic vessels. The effects of three general anesthetics, pentobarbitone, halothane, and ether, on these spontaneous and evoked contractions were studied. Pentobarbitone and halothane inhibit...
journal_title：Microvascular research
pub_type： 杂志文章
doi：10.1016/0026-2862(89)90073-3
更新日期：1989-01-01 00:00:00
