Abstract:
:Sanguinate, a polyethylene glycol-conjugated carboxyhemoglobin, was investigated for cerebral vasoactivity in healthy male Sprague-Dawley rats (Study 1) and for its ability to increase brain tissue oxygen pressure (PbtO2) after controlled cortical impact (CCI) - traumatic brain injury (TBI) (Study 2). In both studies ketamine-acepromazine anesthetized rats were ventilated with 40% O2. In Study 1, a cranial window was used to measure the diameters of medium - (50-100μm) and small-sized (<50μm) pial arterioles before and after four serial infusions of Sanguinate (8mL/kg/h, cumulative 16mL/kg IV), volume-matched Hextend, or normal saline. In Study 2, PbtO2 was measured using a phosphorescence quenching method before TBI, 15min after TBI (T15) and then every 10min thereafter for 155min. At T15, rats received either 8mL/kg IV Sanguinate (40mL/kg/h) or no treatment (saline, 4mL/kg/h). Results showed: 1) in healthy rats, percentage changes in pial arteriole diameter were the same among the groups, 2) in TBI rats, PbtO2 decreased from 36.5±3.9mmHg to 19.8±3.0mmHg at T15 in both groups after TBI and did not recover in either group for the rest of the study, and 3) MAP increased 16±4mmHg and 36±5mmHg after Sanguinate in healthy and TBI rats, respectively, while MAP was unchanged in control groups. In conclusion, Sanguinate did not cause vasoconstriction in the cerebral pial arterioles of healthy rats but it also did not acutely increase PbtO2 when administered after TBI. Sanguinate was associated with an increase in MAP in both studies.
journal_name
Microvasc Resjournal_title
Microvascular researchauthors
Mullah SH,Abutarboush R,Moon-Massat PF,Saha BK,Haque A,Walker PB,Auker CR,Arnaud FG,McCarron RM,Scultetus AHdoi
10.1016/j.mvr.2016.06.001subject
Has Abstractpub_date
2016-09-01 00:00:00pages
83-90eissn
0026-2862issn
1095-9319pii
S0026-2862(16)30054-1journal_volume
107pub_type
杂志文章abstract::The distribution of anionic sites in the basal laminae of the blood capillaries of the murine pancreas was studied in specimens fixed in ruthenium red (RR)-glutaraldehyde mixtures. The sites appeared as discrete, small (6 to 18 nm) particles distributed throughout the three laminae but concentrated primarily in the la...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/0026-2862(84)90006-2
更新日期:1984-11-01 00:00:00
abstract::Growing interest in utilizing endothelial cells (ECs) for therapeutic purposes has led to the exploration of human embryonic stem cells (hESCs) as a potential source for endothelial progenitors. In this study, ECs were induced from hESC lines and their biological characteristics were analyzed and compared with both co...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2012.06.003
更新日期:2012-09-01 00:00:00
abstract::The steatotic liver is characterized by deranged intrahepatic microvasculature that is believed to predispose it to ischemia-reperfusion injury. The aim of this study was to investigate the distorted hepatic hemodynamics and its impact on the redox status of the steatotic liver. Hepatic hemodynamic parameters, hepatic...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/s0026-2862(03)00021-9
更新日期:2003-07-01 00:00:00
abstract::Age-related macular degeneration (AMD) is a common cause of blindness worldwide. While recent studies have revealed that the loss of choroidal endothelial cells (ChECs) is critical to the disease pathogenesis of dry AMD, in vitro studies are needed to fully elucidate the disease mechanism. However, these studies remai...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2018.12.002
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVE:The present study was examined whether fluvastatin, 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, can increase the production of interstitial adenosine via activation of ecto-5'-nucleotidase in the ventricular myocardium, with use of microdialysis techniques in in situ rat hearts. METH...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2016.04.006
更新日期:2016-09-01 00:00:00
abstract::Alterations in the reactivity of arterioles to vasodilator agonists were assessed in the skeletal muscle microcirculation of age-matched, normotensive male Sprague-Dawley rats fed either a high salt (4% NaCl, HS) or a low salt (0.4% NaCl, LS) diet and in reduced renal mass hypertensive rats on a high salt diet (HSRRM)...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1006/mvre.1998.2105
更新日期:1998-11-01 00:00:00
abstract::Angiotensin II is considered to have angiogenic properties. Nevertheless, several authors reported an increase in coronary capillary density after treatment with ACE inhibitors. The aim of the present study was to evaluate the effect of treatment with low doses of ACE inhibitor perindopril, low doses of the diuretic i...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1006/mvre.1999.2224
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND:Vascular hyporeactivity in severe hemorrhagic shock could induce refractory hypotension and is an important cause of death. The global acute inflammatory response induced in shock triggers the over-expression of reactive oxygen species, NO, ET1 and TNF-α, which play essential roles in the pathology of vascul...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2015.12.006
更新日期:2016-05-01 00:00:00
abstract::We previously reported that the cutaneous vasodilator response to local warming in males required noradrenaline (NA) and neuropeptide-Y (NPY). Animal work has shown no role for NPY in female vascular control. We investigated the contribution of NA and NPY in human female cutaneous vascular control. Nine female and nin...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2017.04.003
更新日期:2017-09-01 00:00:00
abstract::Fluid homeostasis is required for life. Processes involved in fluid balance are strongly related to exchanges at the microvascular level. Computational models have been presented in the literature to analyze the microvascular-interstitial interactions. As far as we know, none of those models consider a physiological d...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2018.11.003
更新日期:2019-03-01 00:00:00
abstract::This paper proposes a mathematical model for vessel recruitment in the microvascular coronary network. The model is based on microvascular network units (MVNUs), where we define a MVNU as a portion of the microvascular network comprising seven generations of identical, parallel-arranged vessels (upstream arteries, lar...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2015.11.006
更新日期:2016-03-01 00:00:00
abstract:OBJECTIVE:This study aims to investigate the correlation between the expression of miR-210 in peripheral blood and the number of peripheral endothelial progenitor cells (EPCs) in patients with type 2 diabetes mellitus (T2DM). We also determined the effect of miR-210 on EPC proliferation, adhesion, migration, tube forma...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2020.104032
更新日期:2020-09-01 00:00:00
abstract::Ischemia/Reperfusion injury and hemolysis are characterized by erythrocyte lysis and release of free heme into the microcirculation. Following substantial erythrocyte lysis, heme overwhelms circulatory heme-binding protein networks rapidly forming hemin, the oxidized form of iron protoporphyrin IX. Hemin's role in mod...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2007.01.002
更新日期:2007-05-01 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::Leukocyte margination in the vessels of the microcirculation has been attributed to a flow-dependent interaction with red cells. To determine the extent of this effect, experiments with human blood were done in 100- to 180-micron tubes to detect changes in cell distribution as a function of hematocrit and flow rate. U...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/0026-2862(84)90054-2
更新日期:1984-03-01 00:00:00
abstract:OBJECTIVE:In the present study, we used a two-kidney-two-clip (2k2c) stroke-prone renovascular hypertension rat model (RHRSP) to investigate the protective effects of ligustrazine (TMP) on cerebral arteries and to examine PI3K/Akt pathway behavior under this protection. METHODS:The cerebral artery remodeling was induc...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2019.103938
更新日期:2020-03-01 00:00:00
abstract::Microvascular dysfunction contributes to the development of cardiovascular and metabolic disease. This study tested the hypothesis that young obese (BMI>30 kg m(-2)), otherwise healthy, adults (N=15) have impaired microvascular function relative to age and sex matched, lean (BMI<25 kg m(-2)) individuals (N=14). Partic...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2015.11.007
更新日期:2016-03-01 00:00:00
abstract::The effects of systemic injections of vasoactive substances were studied in the micro-circulation of the hamster skin fold window preparation, which can be observed without anesthesia, exposure, and acute surgical procedures. The effects were characterized by the continuous measurement of the diameter of the arterial ...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/0026-2862(84)90014-1
更新日期:1984-09-01 00:00:00
abstract:OBJECTIVE:Hypertension and hypercholesterolemia elicit inflammatory and thrombogenic responses in the microvasculature. However, little is known about whether and how risk factor combinations alter microvascular function. We examined how the actions of HTN+HCh on the microvasculature differ from the responses elicited ...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2016.01.002
更新日期:2016-05-01 00:00:00
abstract::Particle tracking velocimetry provides a Lagrangian description of flow properties in the microcirculation. To determine the utility of fluorescent nanoparticles to provide Lagrangian coordinates, we tracked these particles both in vitro and in vivo. The particles had a neutral charge and fluorescence intensity greate...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2006.04.006
更新日期:2006-07-01 00:00:00
abstract::Rho-associated kinases are involved in regulation of actin-myosin contractility and the organization of the actin cytoskeleton in both endothelial and smooth muscle cells. By influencing the contraction of the intraendothelial filaments, Rho kinases may affect the size of the interendothelial gaps and thereby influenc...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/s0026-2862(03)00041-4
更新日期:2003-09-01 00:00:00
abstract::A theoretical model, appropriate for data interpretation, is presented for the transcapillary fluid exchange and associated intraluminal hydrodynamic and solute transport occurring in the microocclusion of single capillaries. This analysis describes the spatial and temporal behavior of the intraluminal flow. A compari...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/0026-2862(83)90012-2
更新日期:1983-03-01 00:00:00
abstract::Concentration-response curves are often used as indicators of vascular reactivity and receptor sensitivity. Some investigators use ethylenediaminetetraacetate (EDTA) or ascorbic acid (ASC) to prevent catecholamine oxidation but many others do not. This difference may affect estimates of reactivity. We tested the effec...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/0026-2862(83)90057-2
更新日期:1983-07-01 00:00:00
abstract::Oxygen pressure histograms were determined with the multiwire surface electrode from the gastrocnemius muscle in patients with arterial occlusive disease and compared with those of healthy volunteers. Seven out of 22 patients had normally distributed histograms like volunteers, but the mean PO2 values were lower than ...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/0026-2862(85)90024-x
更新日期:1985-05-01 00:00:00
abstract::The contribution of the pleural mesothelium to pleural liquid and protein transport is still vigorously debated. Recent in vitro studies of stripped pleural membrane and free-standing pericardium have demonstrated active ion solute coupled transport of liquid and transcytosis of protein. However, the relative contribu...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2005.10.003
更新日期:2005-11-01 00:00:00
abstract::The purpose of this study was to determine whether bidirectional flow exists in the sciatic vasa nervorum. Images obtained using high-frequency color Doppler ultrasound in duplex imaging mode (Vevo 2100) were studied retroactively. In Fig. 1 (left panel; rat 1), the color Doppler signal and flow-velocity waveforms are...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2014.05.008
更新日期:2014-07-01 00:00:00
abstract::Endotoxemia, a major feature of sepsis, is a common cause of acute lung injury and initiates rapid accumulation of leukocytes in the lung vasculature. Endothelial mechanisms that underlie this accumulation remain unclear, as current experimental models of endotoxemia are less suitable for targeted activation of the en...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2012.01.006
更新日期:2012-05-01 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::Thermal injuries of more than 20% body surface area (BSA) result in systemic capillary leakage with subsequent edema. This can similarly be induced by burn plasma transfer (BPT) from burned individuals to healthy rats. We evaluated if cerium nitrate (CN) bathing can prevent edema after BPT. Therefore, donor rats (DR) ...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1016/j.mvr.2009.07.006
更新日期:2009-12-01 00:00:00
abstract::Shear stress causes release of nitric oxide (NO) from microvascular endothelial cells in vivo and stimulates their growth in vitro. After chronic electrical stimulation of lower hind limb skeletal muscles in the rat, measurements of capillary diameters and red blood cell velocity indicated that shear stress is increas...
journal_title:Microvascular research
pub_type: 杂志文章
doi:10.1006/mvre.1999.2193
更新日期:2000-01-01 00:00:00